From c940a66b3ac930227df0ab6e01f84bea1afa6c3f Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 2 May 2024 15:31:15 -0700 Subject: perf test: Be more tolerant of metricgroup failures Previously "set -e" meant any non-zero exit code from perf stat would cause a test failure. As a non-zero exit happens when there aren't sufficient permissions, check for this case and make the exit code 2/skip for it. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Acked-by: Veronika Molnarova Cc: Athira Rajeev Link: https://lore.kernel.org/r/20240502223115.2357499-1-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/stat_all_metricgroups.sh | 36 ++++++++++++++++++++----- 1 file changed, 30 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/stat_all_metricgroups.sh b/tools/perf/tests/shell/stat_all_metricgroups.sh index 55ef9c9ded2d..c6d61a4ac3e7 100755 --- a/tools/perf/tests/shell/stat_all_metricgroups.sh +++ b/tools/perf/tests/shell/stat_all_metricgroups.sh @@ -1,9 +1,7 @@ -#!/bin/sh +#!/bin/bash # perf all metricgroups test # SPDX-License-Identifier: GPL-2.0 -set -e - ParanoidAndNotRoot() { [ "$(id -u)" != 0 ] && [ "$(cat /proc/sys/kernel/perf_event_paranoid)" -gt $1 ] @@ -14,11 +12,37 @@ if ParanoidAndNotRoot 0 then system_wide_flag="" fi - +err=0 for m in $(perf list --raw-dump metricgroups) do echo "Testing $m" - perf stat -M "$m" $system_wide_flag sleep 0.01 + result=$(perf stat -M "$m" $system_wide_flag sleep 0.01 2>&1) + result_err=$? + if [[ $result_err -gt 0 ]] + then + if [[ "$result" =~ \ + "Access to performance monitoring and observability operations is limited" ]] + then + echo "Permission failure" + echo $result + if [[ $err -eq 0 ]] + then + err=2 # Skip + fi + elif [[ "$result" =~ "in per-thread mode, enable system wide" ]] + then + echo "Permissions - need system wide mode" + echo $result + if [[ $err -eq 0 ]] + then + err=2 # Skip + fi + else + echo "Metric group $m failed" + echo $result + err=1 # Fail + fi + fi done -exit 0 +exit $err -- cgit v1.2.3 From 5afd032961e8465808c4bc385c06e7676fbe1951 Mon Sep 17 00:00:00 2001 From: James Clark Date: Mon, 16 Sep 2024 14:57:32 +0100 Subject: perf cs-etm: Don't flush when packet_queue fills up cs_etm__flush(), like cs_etm__sample() is an operation that generates a sample and then swaps the current with the previous packet. Calling flush after processing the queues results in two swaps which corrupts the next sample. Therefore it wasn't appropriate to call flush here so remove it. Flushing is still done on a discontinuity to explicitly clear the last branch buffer, but when the packet_queue fills up before reaching a timestamp, that's not a discontinuity and the call to cs_etm__process_traceid_queue() already generated samples and drained the buffers correctly. This is visible by looking for a branch that has the same target as the previous branch and the following source is before the address of the last target, which is impossible as execution would have had to have gone backwards: ffff800080849d40 _find_next_and_bit+0x78 => ffff80008011cadc update_sg_lb_stats+0x94 (packet_queue fills here before a timestamp, resulting in a flush and branch target ffff80008011cadc is duplicated.) ffff80008011cb1c update_sg_lb_stats+0xd4 => ffff80008011cadc update_sg_lb_stats+0x94 ffff8000801117c4 cpu_util+0x24 => ffff8000801117d4 cpu_util+0x34 After removing the flush the correct branch target is used for the second sample, and ffff8000801117c4 is no longer before the previous address: ffff800080849d40 _find_next_and_bit+0x78 => ffff80008011cadc update_sg_lb_stats+0x94 ffff80008011cb1c update_sg_lb_stats+0xd4 => ffff8000801117a0 cpu_util+0x0 ffff8000801117c4 cpu_util+0x24 => ffff8000801117d4 cpu_util+0x34 Make sure that a final branch stack is output at the end of the trace by calling cs_etm__end_block(). This is already done for both the timeless decode paths. Fixes: 21fe8dc1191a ("perf cs-etm: Add support for CPU-wide trace scenarios") Reported-by: Ganapatrao Kulkarni Closes: https://lore.kernel.org/all/20240719092619.274730-1-gankulkarni@os.amperecomputing.com/ Reviewed-by: Leo Yan Signed-off-by: James Clark Tested-by: Ganapatrao Kulkarni Cc: Ben Gainey Cc: Suzuki K Poulose Cc: Will Deacon Cc: Mathieu Poirier Cc: Mike Leach Cc: Ruidong Tian Cc: Benjamin Gray Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: John Garry Cc: scclevenger@os.amperecomputing.com Link: https://lore.kernel.org/r/20240916135743.1490403-2-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/util/cs-etm.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index 90f32f327b9b..242788ac9625 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -2490,12 +2490,6 @@ static void cs_etm__clear_all_traceid_queues(struct cs_etm_queue *etmq) /* Ignore return value */ cs_etm__process_traceid_queue(etmq, tidq); - - /* - * Generate an instruction sample with the remaining - * branchstack entries. - */ - cs_etm__flush(etmq, tidq); } } @@ -2638,7 +2632,7 @@ static int cs_etm__process_timestamped_queues(struct cs_etm_auxtrace *etm) while (1) { if (!etm->heap.heap_cnt) - goto out; + break; /* Take the entry at the top of the min heap */ cs_queue_nr = etm->heap.heap_array[0].queue_nr; @@ -2721,6 +2715,23 @@ refetch: ret = auxtrace_heap__add(&etm->heap, cs_queue_nr, cs_timestamp); } + for (i = 0; i < etm->queues.nr_queues; i++) { + struct int_node *inode; + + etmq = etm->queues.queue_array[i].priv; + if (!etmq) + continue; + + intlist__for_each_entry(inode, etmq->traceid_queues_list) { + int idx = (int)(intptr_t)inode->priv; + + /* Flush any remaining branch stack entries */ + tidq = etmq->traceid_queues[idx]; + ret = cs_etm__end_block(etmq, tidq); + if (ret) + return ret; + } + } out: return ret; } -- cgit v1.2.3 From ba5ae78a5a2a956d281ac62f581ab95e618bbf18 Mon Sep 17 00:00:00 2001 From: James Clark Date: Mon, 16 Sep 2024 14:57:33 +0100 Subject: perf cs-etm: Use new OpenCSD consistency checks Previously when the incorrect binary was used for decode, Perf would silently continue to generate incorrect samples. With OpenCSD 1.5.4 we can enable consistency checks that do a best effort to detect a mismatch in the image. When one is detected a warning is printed and sample generation stops until the trace resynchronizes with a good part of the image. Reported-by: Ganapatrao Kulkarni Closes: https://lore.kernel.org/all/20240719092619.274730-1-gankulkarni@os.amperecomputing.com/ Reviewed-by: Leo Yan Signed-off-by: James Clark Tested-by: Ganapatrao Kulkarni Cc: Ben Gainey Cc: Suzuki K Poulose Cc: Will Deacon Cc: Mathieu Poirier Cc: Mike Leach Cc: Ruidong Tian Cc: Leo Yan Cc: Benjamin Gray Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: John Garry Cc: scclevenger@os.amperecomputing.com Link: https://lore.kernel.org/r/20240916135743.1490403-3-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c index b78ef0262135..b85a8837bddc 100644 --- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c +++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c @@ -685,9 +685,14 @@ cs_etm_decoder__create_etm_decoder(struct cs_etm_decoder_params *d_params, } if (d_params->operation == CS_ETM_OPERATION_DECODE) { + int decode_flags = OCSD_CREATE_FLG_FULL_DECODER; +#ifdef OCSD_OPFLG_N_UNCOND_DIR_BR_CHK + decode_flags |= OCSD_OPFLG_N_UNCOND_DIR_BR_CHK | OCSD_OPFLG_CHK_RANGE_CONTINUE | + ETM4_OPFLG_PKTDEC_AA64_OPCODE_CHK; +#endif if (ocsd_dt_create_decoder(decoder->dcd_tree, decoder->decoder_name, - OCSD_CREATE_FLG_FULL_DECODER, + decode_flags, trace_config, &csid)) return -1; -- cgit v1.2.3 From 9943581c64b1d1edaf9985ee81e45e728f67cd2e Mon Sep 17 00:00:00 2001 From: James Clark Date: Mon, 16 Sep 2024 14:57:34 +0100 Subject: perf scripting python: Add function to get a config value This can be used to get config values like which objdump Perf uses for disassembly. Reviewed-by: Leo Yan Signed-off-by: James Clark Tested-by: Ganapatrao Kulkarni Cc: Ben Gainey Cc: Suzuki K Poulose Cc: Will Deacon Cc: Mathieu Poirier Cc: Mike Leach Cc: Ruidong Tian Cc: Leo Yan Cc: Benjamin Gray Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: John Garry Cc: scclevenger@os.amperecomputing.com Link: https://lore.kernel.org/r/20240916135743.1490403-4-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-script-python.txt | 2 +- .../perf/scripts/python/Perf-Trace-Util/Context.c | 11 +++++++++++ tools/perf/util/config.c | 22 ++++++++++++++++++++++ tools/perf/util/config.h | 1 + 4 files changed, 35 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-script-python.txt b/tools/perf/Documentation/perf-script-python.txt index 13e37e9385ee..27a1cac6fe76 100644 --- a/tools/perf/Documentation/perf-script-python.txt +++ b/tools/perf/Documentation/perf-script-python.txt @@ -624,7 +624,7 @@ as perf_trace_context.perf_script_context . perf_set_itrace_options(context, itrace_options) - set --itrace options if they have not been set already perf_sample_srcline(context) - returns source_file_name, line_number perf_sample_srccode(context) - returns source_file_name, line_number, source_line - + perf_config_get(config_name) - returns the value of the named config item, or None if unset Util.py Module ~~~~~~~~~~~~~~ diff --git a/tools/perf/scripts/python/Perf-Trace-Util/Context.c b/tools/perf/scripts/python/Perf-Trace-Util/Context.c index 3954bd1587ce..01f54d6724a5 100644 --- a/tools/perf/scripts/python/Perf-Trace-Util/Context.c +++ b/tools/perf/scripts/python/Perf-Trace-Util/Context.c @@ -12,6 +12,7 @@ #define PY_SSIZE_T_CLEAN #include +#include "../../../util/config.h" #include "../../../util/trace-event.h" #include "../../../util/event.h" #include "../../../util/symbol.h" @@ -182,6 +183,15 @@ static PyObject *perf_sample_srccode(PyObject *obj, PyObject *args) return perf_sample_src(obj, args, true); } +static PyObject *__perf_config_get(PyObject *obj, PyObject *args) +{ + const char *config_name; + + if (!PyArg_ParseTuple(args, "s", &config_name)) + return NULL; + return Py_BuildValue("s", perf_config_get(config_name)); +} + static PyMethodDef ContextMethods[] = { #ifdef HAVE_LIBTRACEEVENT { "common_pc", perf_trace_context_common_pc, METH_VARARGS, @@ -199,6 +209,7 @@ static PyMethodDef ContextMethods[] = { METH_VARARGS, "Get source file name and line number."}, { "perf_sample_srccode", perf_sample_srccode, METH_VARARGS, "Get source file name, line number and line."}, + { "perf_config_get", __perf_config_get, METH_VARARGS, "Get perf config entry"}, { NULL, NULL, 0, NULL} }; diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c index 7a650de0db83..68f9407ca74b 100644 --- a/tools/perf/util/config.c +++ b/tools/perf/util/config.c @@ -912,6 +912,7 @@ void set_buildid_dir(const char *dir) struct perf_config_scan_data { const char *name; const char *fmt; + const char *value; va_list args; int ret; }; @@ -939,3 +940,24 @@ int perf_config_scan(const char *name, const char *fmt, ...) return d.ret; } + +static int perf_config_get_cb(const char *var, const char *value, void *data) +{ + struct perf_config_scan_data *d = data; + + if (!strcmp(var, d->name)) + d->value = value; + + return 0; +} + +const char *perf_config_get(const char *name) +{ + struct perf_config_scan_data d = { + .name = name, + .value = NULL, + }; + + perf_config(perf_config_get_cb, &d); + return d.value; +} diff --git a/tools/perf/util/config.h b/tools/perf/util/config.h index 2e5e808928a5..9971313d61c1 100644 --- a/tools/perf/util/config.h +++ b/tools/perf/util/config.h @@ -30,6 +30,7 @@ typedef int (*config_fn_t)(const char *, const char *, void *); int perf_default_config(const char *, const char *, void *); int perf_config(config_fn_t fn, void *); int perf_config_scan(const char *name, const char *fmt, ...) __scanf(2, 3); +const char *perf_config_get(const char *name); int perf_config_set(struct perf_config_set *set, config_fn_t fn, void *data); int perf_config_int(int *dest, const char *, const char *); -- cgit v1.2.3 From 7b371afc9b67349c724c15d235924bc40694872a Mon Sep 17 00:00:00 2001 From: James Clark Date: Mon, 16 Sep 2024 14:57:35 +0100 Subject: perf scripts python cs-etm: Update to use argparse optparse is deprecated and less flexible than argparse so update it. Reviewed-by: Leo Yan Signed-off-by: James Clark Tested-by: Ganapatrao Kulkarni Cc: Ben Gainey Cc: Suzuki K Poulose Cc: Will Deacon Cc: Mathieu Poirier Cc: Mike Leach Cc: Ruidong Tian Cc: Leo Yan Cc: Benjamin Gray Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: John Garry Cc: scclevenger@os.amperecomputing.com Link: https://lore.kernel.org/r/20240916135743.1490403-5-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/scripts/python/arm-cs-trace-disasm.py | 28 +++++++++--------------- 1 file changed, 10 insertions(+), 18 deletions(-) (limited to 'tools') diff --git a/tools/perf/scripts/python/arm-cs-trace-disasm.py b/tools/perf/scripts/python/arm-cs-trace-disasm.py index 7aff02d84ffb..45f682a8b34d 100755 --- a/tools/perf/scripts/python/arm-cs-trace-disasm.py +++ b/tools/perf/scripts/python/arm-cs-trace-disasm.py @@ -11,7 +11,7 @@ import os from os import path import re from subprocess import * -from optparse import OptionParser, make_option +import argparse from perf_trace_context import perf_set_itrace_options, \ perf_sample_insn, perf_sample_srccode @@ -28,19 +28,11 @@ from perf_trace_context import perf_set_itrace_options, \ # perf script -s scripts/python/arm-cs-trace-disasm.py # Command line parsing. -option_list = [ - # formatting options for the bottom entry of the stack - make_option("-k", "--vmlinux", dest="vmlinux_name", - help="Set path to vmlinux file"), - make_option("-d", "--objdump", dest="objdump_name", - help="Set path to objdump executable file"), - make_option("-v", "--verbose", dest="verbose", - action="store_true", default=False, - help="Enable debugging log") -] - -parser = OptionParser(option_list=option_list) -(options, args) = parser.parse_args() +args = argparse.ArgumentParser() +args.add_argument("-k", "--vmlinux", help="Set path to vmlinux file") +args.add_argument("-d", "--objdump", help="Set path to objdump executable file"), +args.add_argument("-v", "--verbose", action="store_true", help="Enable debugging log") +options = args.parse_args() # Initialize global dicts and regular expression disasm_cache = dict() @@ -65,8 +57,8 @@ def get_offset(perf_dict, field): def get_dso_file_path(dso_name, dso_build_id): if (dso_name == "[kernel.kallsyms]" or dso_name == "vmlinux"): - if (options.vmlinux_name): - return options.vmlinux_name; + if (options.vmlinux): + return options.vmlinux; else: return dso_name @@ -92,7 +84,7 @@ def read_disam(dso_fname, dso_start, start_addr, stop_addr): else: start_addr = start_addr - dso_start; stop_addr = stop_addr - dso_start; - disasm = [ options.objdump_name, "-d", "-z", + disasm = [ options.objdump, "-d", "-z", "--start-address="+format(start_addr,"#x"), "--stop-address="+format(stop_addr,"#x") ] disasm += [ dso_fname ] @@ -256,7 +248,7 @@ def process_event(param_dict): print("Stop address 0x%x is out of range [ 0x%x .. 0x%x ] for dso %s" % (stop_addr, int(dso_start), int(dso_end), dso)) return - if (options.objdump_name != None): + if (options.objdump != None): # It doesn't need to decrease virtual memory offset for disassembly # for kernel dso and executable file dso, so in this case we set # vm_start to zero. -- cgit v1.2.3 From 8286cc55a9a6f03d62bd140ce827025f9ed5e619 Mon Sep 17 00:00:00 2001 From: James Clark Date: Mon, 16 Sep 2024 14:57:36 +0100 Subject: perf scripts python cs-etm: Improve arguments Make vmlinux detection automatic and use Perf's default objdump when -d is specified. This will make it easier for a test to use the script without having to provide arguments. And similarly for users. Reviewed-by: Leo Yan Signed-off-by: James Clark Tested-by: Ganapatrao Kulkarni Cc: Ben Gainey Cc: Suzuki K Poulose Cc: Will Deacon Cc: Mathieu Poirier Cc: Mike Leach Cc: Ruidong Tian Cc: Leo Yan Cc: Benjamin Gray Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: John Garry Cc: scclevenger@os.amperecomputing.com Link: https://lore.kernel.org/r/20240916135743.1490403-6-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/scripts/python/arm-cs-trace-disasm.py | 63 +++++++++++++++++++++--- 1 file changed, 55 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/perf/scripts/python/arm-cs-trace-disasm.py b/tools/perf/scripts/python/arm-cs-trace-disasm.py index 45f682a8b34d..02e957d037ea 100755 --- a/tools/perf/scripts/python/arm-cs-trace-disasm.py +++ b/tools/perf/scripts/python/arm-cs-trace-disasm.py @@ -12,25 +12,48 @@ from os import path import re from subprocess import * import argparse +import platform -from perf_trace_context import perf_set_itrace_options, \ - perf_sample_insn, perf_sample_srccode +from perf_trace_context import perf_sample_srccode, perf_config_get # Below are some example commands for using this script. +# Note a --kcore recording is required for accurate decode +# due to the alternatives patching mechanism. However this +# script only supports reading vmlinux for disassembly dump, +# meaning that any patched instructions will appear +# as unpatched, but the instruction ranges themselves will +# be correct. In addition to this, source line info comes +# from Perf, and when using kcore there is no debug info. The +# following lists the supported features in each mode: +# +# +-----------+-----------------+------------------+------------------+ +# | Recording | Accurate decode | Source line dump | Disassembly dump | +# +-----------+-----------------+------------------+------------------+ +# | --kcore | yes | no | yes | +# | normal | no | yes | yes | +# +-----------+-----------------+------------------+------------------+ +# +# Output disassembly with objdump and auto detect vmlinux +# (when running on same machine.) +# perf script -s scripts/python/arm-cs-trace-disasm.py -d # -# Output disassembly with objdump: -# perf script -s scripts/python/arm-cs-trace-disasm.py \ -# -- -d objdump -k path/to/vmlinux # Output disassembly with llvm-objdump: # perf script -s scripts/python/arm-cs-trace-disasm.py \ # -- -d llvm-objdump-11 -k path/to/vmlinux +# # Output only source line and symbols: # perf script -s scripts/python/arm-cs-trace-disasm.py +def default_objdump(): + config = perf_config_get("annotate.objdump") + return config if config else "objdump" + # Command line parsing. args = argparse.ArgumentParser() -args.add_argument("-k", "--vmlinux", help="Set path to vmlinux file") -args.add_argument("-d", "--objdump", help="Set path to objdump executable file"), +args.add_argument("-k", "--vmlinux", + help="Set path to vmlinux file. Omit to autodetect if running on same machine") +args.add_argument("-d", "--objdump", nargs="?", const=default_objdump(), + help="Show disassembly. Can also be used to change the objdump path"), args.add_argument("-v", "--verbose", action="store_true", help="Enable debugging log") options = args.parse_args() @@ -45,6 +68,17 @@ glb_source_file_name = None glb_line_number = None glb_dso = None +kver = platform.release() +vmlinux_paths = [ + f"/usr/lib/debug/boot/vmlinux-{kver}.debug", + f"/usr/lib/debug/lib/modules/{kver}/vmlinux", + f"/lib/modules/{kver}/build/vmlinux", + f"/usr/lib/debug/boot/vmlinux-{kver}", + f"/boot/vmlinux-{kver}", + f"/boot/vmlinux", + f"vmlinux" +] + def get_optional(perf_dict, field): if field in perf_dict: return perf_dict[field] @@ -55,12 +89,25 @@ def get_offset(perf_dict, field): return "+%#x" % perf_dict[field] return "" +def find_vmlinux(): + if hasattr(find_vmlinux, "path"): + return find_vmlinux.path + + for v in vmlinux_paths: + if os.access(v, os.R_OK): + find_vmlinux.path = v + break + else: + find_vmlinux.path = None + + return find_vmlinux.path + def get_dso_file_path(dso_name, dso_build_id): if (dso_name == "[kernel.kallsyms]" or dso_name == "vmlinux"): if (options.vmlinux): return options.vmlinux; else: - return dso_name + return find_vmlinux() if find_vmlinux() else dso_name if (dso_name == "[vdso]") : append = "/vdso" -- cgit v1.2.3 From 66dd3b539efe0d4b44324c1fe39978db8111ed93 Mon Sep 17 00:00:00 2001 From: James Clark Date: Mon, 16 Sep 2024 14:57:37 +0100 Subject: perf scripts python cs-etm: Add start and stop arguments Make it possible to only disassemble a range of timestamps or sample indexes. This will be used by the test to limit the runtime, but it's also useful for users. Reviewed-by: Leo Yan Signed-off-by: James Clark Tested-by: Ganapatrao Kulkarni Cc: Ben Gainey Cc: Suzuki K Poulose Cc: Will Deacon Cc: Mathieu Poirier Cc: Mike Leach Cc: Ruidong Tian Cc: Leo Yan Cc: Benjamin Gray Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: John Garry Cc: scclevenger@os.amperecomputing.com Link: https://lore.kernel.org/r/20240916135743.1490403-7-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/scripts/python/arm-cs-trace-disasm.py | 40 ++++++++++++++++++++++-- 1 file changed, 38 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/scripts/python/arm-cs-trace-disasm.py b/tools/perf/scripts/python/arm-cs-trace-disasm.py index 02e957d037ea..1128d259b4f4 100755 --- a/tools/perf/scripts/python/arm-cs-trace-disasm.py +++ b/tools/perf/scripts/python/arm-cs-trace-disasm.py @@ -49,13 +49,36 @@ def default_objdump(): return config if config else "objdump" # Command line parsing. +def int_arg(v): + v = int(v) + if v < 0: + raise argparse.ArgumentTypeError("Argument must be a positive integer") + return v + args = argparse.ArgumentParser() args.add_argument("-k", "--vmlinux", help="Set path to vmlinux file. Omit to autodetect if running on same machine") args.add_argument("-d", "--objdump", nargs="?", const=default_objdump(), help="Show disassembly. Can also be used to change the objdump path"), args.add_argument("-v", "--verbose", action="store_true", help="Enable debugging log") +args.add_argument("--start-time", type=int_arg, help="Monotonic clock time of sample to start from. " + "See 'time' field on samples in -v mode.") +args.add_argument("--stop-time", type=int_arg, help="Monotonic clock time of sample to stop at. " + "See 'time' field on samples in -v mode.") +args.add_argument("--start-sample", type=int_arg, help="Index of sample to start from. " + "See 'index' field on samples in -v mode.") +args.add_argument("--stop-sample", type=int_arg, help="Index of sample to stop at. " + "See 'index' field on samples in -v mode.") + options = args.parse_args() +if (options.start_time and options.stop_time and + options.start_time >= options.stop_time): + print("--start-time must less than --stop-time") + exit(2) +if (options.start_sample and options.stop_sample and + options.start_sample >= options.stop_sample): + print("--start-sample must less than --stop-sample") + exit(2) # Initialize global dicts and regular expression disasm_cache = dict() @@ -63,6 +86,7 @@ cpu_data = dict() disasm_re = re.compile(r"^\s*([0-9a-fA-F]+):") disasm_func_re = re.compile(r"^\s*([0-9a-fA-F]+)\s.*:") cache_size = 64*1024 +sample_idx = -1 glb_source_file_name = None glb_line_number = None @@ -151,10 +175,10 @@ def print_disam(dso_fname, dso_start, start_addr, stop_addr): def print_sample(sample): print("Sample = { cpu: %04d addr: 0x%016x phys_addr: 0x%016x ip: 0x%016x " \ - "pid: %d tid: %d period: %d time: %d }" % \ + "pid: %d tid: %d period: %d time: %d index: %d}" % \ (sample['cpu'], sample['addr'], sample['phys_addr'], \ sample['ip'], sample['pid'], sample['tid'], \ - sample['period'], sample['time'])) + sample['period'], sample['time'], sample_idx)) def trace_begin(): print('ARM CoreSight Trace Data Assembler Dump') @@ -216,6 +240,7 @@ def print_srccode(comm, param_dict, sample, symbol, dso): def process_event(param_dict): global cache_size global options + global sample_idx sample = param_dict["sample"] comm = param_dict["comm"] @@ -231,6 +256,17 @@ def process_event(param_dict): ip = sample["ip"] addr = sample["addr"] + sample_idx += 1 + + if (options.start_time and sample["time"] < options.start_time): + return + if (options.stop_time and sample["time"] > options.stop_time): + exit(0) + if (options.start_sample and sample_idx < options.start_sample): + return + if (options.stop_sample and sample_idx > options.stop_sample): + exit(0) + if (options.verbose == True): print("Event type: %s" % name) print_sample(sample) -- cgit v1.2.3 From eb0a59e9e1e799303bc421770dc039f96ab8b84d Mon Sep 17 00:00:00 2001 From: James Clark Date: Mon, 16 Sep 2024 14:57:38 +0100 Subject: perf test: cs-etm: Test Coresight disassembly script Run a few samples through the disassembly script and check to see that at least one branch instruction is printed. Signed-off-by: James Clark Reviewed-by: Leo Yan Tested-by: Ganapatrao Kulkarni Cc: Ben Gainey Cc: Suzuki K Poulose Cc: Will Deacon Cc: Mathieu Poirier Cc: Mike Leach Cc: Ruidong Tian Cc: Leo Yan Cc: Benjamin Gray Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: John Garry Cc: scclevenger@os.amperecomputing.com Link: https://lore.kernel.org/r/20240916135743.1490403-8-james.clark@linaro.org Signed-off-by: Namhyung Kim --- .../perf/tests/shell/test_arm_coresight_disasm.sh | 65 ++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100755 tools/perf/tests/shell/test_arm_coresight_disasm.sh (limited to 'tools') diff --git a/tools/perf/tests/shell/test_arm_coresight_disasm.sh b/tools/perf/tests/shell/test_arm_coresight_disasm.sh new file mode 100755 index 000000000000..af63e3757cb0 --- /dev/null +++ b/tools/perf/tests/shell/test_arm_coresight_disasm.sh @@ -0,0 +1,65 @@ +#!/bin/sh +# Check Arm CoreSight disassembly script completes without errors +# SPDX-License-Identifier: GPL-2.0 + +# The disassembly script reconstructs ranges of instructions and gives these to objdump to +# decode. objdump doesn't like ranges that go backwards, but these are a good indication +# that decoding has gone wrong either in OpenCSD, Perf or in the range reconstruction in +# the script. Test all 3 parts are working correctly by running the script. + +skip_if_no_cs_etm_event() { + perf list | grep -q 'cs_etm//' && return 0 + + # cs_etm event doesn't exist + return 2 +} + +skip_if_no_cs_etm_event || exit 2 + +# Assume an error unless we reach the very end +set -e +glb_err=1 + +perfdata_dir=$(mktemp -d /tmp/__perf_test.perf.data.XXXXX) +perfdata=${perfdata_dir}/perf.data +file=$(mktemp /tmp/temporary_file.XXXXX) +# Relative path works whether it's installed or running from repo +script_path=$(dirname "$0")/../../scripts/python/arm-cs-trace-disasm.py + +cleanup_files() +{ + set +e + rm -rf ${perfdata_dir} + rm -f ${file} + trap - EXIT TERM INT + exit $glb_err +} + +trap cleanup_files EXIT TERM INT + +# Ranges start and end on branches, so check for some likely branch instructions +sep="\s\|\s" +branch_search="\sbl${sep}b${sep}b.ne${sep}b.eq${sep}cbz\s" + +## Test kernel ## +if [ -e /proc/kcore ]; then + echo "Testing kernel disassembly" + perf record -o ${perfdata} -e cs_etm//k --kcore -- touch $file > /dev/null 2>&1 + perf script -i ${perfdata} -s python:${script_path} -- \ + -d --stop-sample=30 2> /dev/null > ${file} + grep -q -e ${branch_search} ${file} + echo "Found kernel branches" +else + # kcore is required for correct kernel decode due to runtime code patching + echo "No kcore, skipping kernel test" +fi + +## Test user ## +echo "Testing userspace disassembly" +perf record -o ${perfdata} -e cs_etm//u -- touch $file > /dev/null 2>&1 +perf script -i ${perfdata} -s python:${script_path} -- \ + -d --stop-sample=30 2> /dev/null > ${file} +grep -q -e ${branch_search} ${file} +echo "Found userspace branches" + +glb_err=0 -- cgit v1.2.3 From f115506d2ce4549df306746cd0b1c5d7bf6537f5 Mon Sep 17 00:00:00 2001 From: Masum Reza Date: Sun, 22 Sep 2024 16:56:16 +0530 Subject: perf evsel: display dmesg command of showing a hardcoded path In non-FHS compliant distros like NixOS, nothing resides in `/bin` and `/usr/bin`. Instead dynamically symlinked into `/run/current-system/sw/bin/`, the executable resides in `/nix/store`. With this patch,`/bin` prefix from the dmesg command in the error message is stripped. Link: https://github.com/NixOS/nixpkgs/pull/258027 Signed-off-by: Masum Reza Cc: Yunseong Kim Cc: Ze Gao Cc: Yang Jihong Link: https://lore.kernel.org/r/20240922112619.149429-1-masumrezarock100@gmail.com Signed-off-by: Namhyung Kim --- tools/perf/util/evsel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index dbf9c8cee3c5..b9c18f331699 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -3415,7 +3415,7 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target, return scnprintf(msg, size, "The sys_perf_event_open() syscall returned with %d (%s) for event (%s).\n" - "/bin/dmesg | grep -i perf may provide additional information.\n", + "\"dmesg | grep -i perf\" may provide additional information.\n", err, str_error_r(err, sbuf, sizeof(sbuf)), evsel__name(evsel)); } -- cgit v1.2.3 From e880a70f8046df0dd9089fa60dcb866a2cc69194 Mon Sep 17 00:00:00 2001 From: Levi Yun Date: Wed, 25 Sep 2024 14:20:21 +0100 Subject: perf stat: Close cork_fd when create_perf_stat_counter() failed When create_perf_stat_counter() failed, it doesn't close workload.cork_fd open in evlist__prepare_workload(). This could make too many open file error while __run_perf_stat() repeats. Introduce evlist__cancel_workload to close workload.cork_fd and wait workload.child_pid until exit to clear child process when create_perf_stat_counter() is failed. Signed-off-by: Levi Yun Reviewed-by: James Clark Reviewed-by: Andi Kleen Cc: nd@arm.com Cc: howardchu95@gmail.com Link: https://lore.kernel.org/r/20240925132022.2650180-2-yeoreum.yun@arm.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 50 +++++++++++++++++++++++++++++++++-------------- tools/perf/util/evlist.c | 19 ++++++++++++++++-- tools/perf/util/evlist.h | 1 + 3 files changed, 53 insertions(+), 17 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 689a3d43c258..2c46bdbd9914 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -716,15 +716,19 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx) } if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) { - if (affinity__setup(&saved_affinity) < 0) - return -1; + if (affinity__setup(&saved_affinity) < 0) { + err = -1; + goto err_out; + } affinity = &saved_affinity; } evlist__for_each_entry(evsel_list, counter) { counter->reset_group = false; - if (bpf_counter__load(counter, &target)) - return -1; + if (bpf_counter__load(counter, &target)) { + err = -1; + goto err_out; + } if (!(evsel__is_bperf(counter))) all_counters_use_bpf = false; } @@ -767,7 +771,8 @@ try_again: switch (stat_handle_error(counter)) { case COUNTER_FATAL: - return -1; + err = -1; + goto err_out; case COUNTER_RETRY: goto try_again; case COUNTER_SKIP: @@ -808,7 +813,8 @@ try_again_reset: switch (stat_handle_error(counter)) { case COUNTER_FATAL: - return -1; + err = -1; + goto err_out; case COUNTER_RETRY: goto try_again_reset; case COUNTER_SKIP: @@ -833,8 +839,10 @@ try_again_reset: stat_config.unit_width = l; if (evsel__should_store_id(counter) && - evsel__store_ids(counter, evsel_list)) - return -1; + evsel__store_ids(counter, evsel_list)) { + err = -1; + goto err_out; + } } if (evlist__apply_filters(evsel_list, &counter, &target)) { @@ -855,20 +863,23 @@ try_again_reset: } if (err < 0) - return err; + goto err_out; err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list, process_synthesized_event, is_pipe); if (err < 0) - return err; + goto err_out; + } if (target.initial_delay) { pr_info(EVLIST_DISABLED_MSG); } else { err = enable_counters(); - if (err) - return -1; + if (err) { + err = -1; + goto err_out; + } } /* Exec the command, if any */ @@ -878,8 +889,10 @@ try_again_reset: if (target.initial_delay > 0) { usleep(target.initial_delay * USEC_PER_MSEC); err = enable_counters(); - if (err) - return -1; + if (err) { + err = -1; + goto err_out; + } pr_info(EVLIST_ENABLED_MSG); } @@ -899,7 +912,8 @@ try_again_reset: if (workload_exec_errno) { const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); pr_err("Workload failed: %s\n", emsg); - return -1; + err = -1; + goto err_out; } if (WIFSIGNALED(status)) @@ -946,6 +960,12 @@ try_again_reset: evlist__close(evsel_list); return WEXITSTATUS(status); + +err_out: + if (forks) + evlist__cancel_workload(evsel_list); + + return err; } static int run_perf_stat(int argc, const char **argv, int run_idx) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index f14b7e6ff1dc..a9df84692d4a 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -48,6 +48,7 @@ #include #include #include +#include #include #include @@ -1484,6 +1485,8 @@ int evlist__prepare_workload(struct evlist *evlist, struct target *target, const int child_ready_pipe[2], go_pipe[2]; char bf; + evlist->workload.cork_fd = -1; + if (pipe(child_ready_pipe) < 0) { perror("failed to create 'ready' pipe"); return -1; @@ -1536,7 +1539,7 @@ int evlist__prepare_workload(struct evlist *evlist, struct target *target, const * For cancelling the workload without actually running it, * the parent will just close workload.cork_fd, without writing * anything, i.e. read will return zero and we just exit() - * here. + * here (See evlist__cancel_workload()). */ if (ret != 1) { if (ret == -1) @@ -1600,7 +1603,7 @@ out_close_ready_pipe: int evlist__start_workload(struct evlist *evlist) { - if (evlist->workload.cork_fd > 0) { + if (evlist->workload.cork_fd >= 0) { char bf = 0; int ret; /* @@ -1611,12 +1614,24 @@ int evlist__start_workload(struct evlist *evlist) perror("unable to write to pipe"); close(evlist->workload.cork_fd); + evlist->workload.cork_fd = -1; return ret; } return 0; } +void evlist__cancel_workload(struct evlist *evlist) +{ + int status; + + if (evlist->workload.cork_fd >= 0) { + close(evlist->workload.cork_fd); + evlist->workload.cork_fd = -1; + waitpid(evlist->workload.pid, &status, WNOHANG); + } +} + int evlist__parse_sample(struct evlist *evlist, union perf_event *event, struct perf_sample *sample) { struct evsel *evsel = evlist__event2evsel(evlist, event); diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index bcc1c6984bb5..888fda751e1a 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -186,6 +186,7 @@ int evlist__prepare_workload(struct evlist *evlist, struct target *target, const char *argv[], bool pipe_output, void (*exec_error)(int signo, siginfo_t *info, void *ucontext)); int evlist__start_workload(struct evlist *evlist); +void evlist__cancel_workload(struct evlist *evlist); struct option; -- cgit v1.2.3 From b77f8c36ce0b23da97f5442c2f55cc98c2cb5567 Mon Sep 17 00:00:00 2001 From: Levi Yun Date: Wed, 25 Sep 2024 14:20:22 +0100 Subject: perf stat: Stop repeating when ref_perf_stat() returns -1 Exit when run_perf_stat() returns an error to avoid continuously repeating the same error message. It's not expected that COUNTER_FATAL or internal errors are recoverable so there's no point in retrying. This fixes the following flood of error messages for permission issues, for example when perf_event_paranoid==3: perf stat -r 1044 -- false Error: Access to performance monitoring and observability operations is limited. ... Error: Access to performance monitoring and observability operations is limited. ... (repeating for 1044 times). Signed-off-by: Levi Yun Reviewed-by: James Clark Cc: nd@arm.com Cc: howardchu95@gmail.com Link: https://lore.kernel.org/r/20240925132022.2650180-3-yeoreum.yun@arm.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 2c46bdbd9914..6cad3435b198 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -968,6 +968,14 @@ err_out: return err; } +/* + * Returns -1 for fatal errors which signifies to not continue + * when in repeat mode. + * + * Returns < -1 error codes when stat record is used. These + * result in the stat information being displayed, but writing + * to the file fails and is non fatal. + */ static int run_perf_stat(int argc, const char **argv, int run_idx) { int ret; @@ -2899,7 +2907,10 @@ int cmd_stat(int argc, const char **argv) evlist__reset_prev_raw_counts(evsel_list); status = run_perf_stat(argc, argv, run_idx); - if (forever && status != -1 && !interval) { + if (status == -1) + break; + + if (forever && !interval) { print_counters(NULL, argc, argv); perf_stat__reset_stats(); } -- cgit v1.2.3 From 235f0da3274690f540aa53fccf77d433e344e4b8 Mon Sep 17 00:00:00 2001 From: Xu Yang Date: Tue, 24 Sep 2024 11:08:12 +0800 Subject: perf vendor events arm64: imx95: add imx95_bandwidth_usage.lpddr4x metric Except lpddr5, i.MX95 also support lpddr4x. This will add a metric for lpddr4x. Signed-off-by: Xu Yang Cc: shawnguo@kernel.org Cc: will@kernel.org Cc: james.clark@linaro.org Cc: mike.leach@linaro.org Cc: imx@lists.linux.dev Cc: john.g.garry@oracle.com Cc: kernel@pengutronix.de Cc: s.hauer@pengutronix.de Link: https://lore.kernel.org/r/20240924030812.3211029-1-xu.yang_2@nxp.com Signed-off-by: Namhyung Kim --- tools/perf/pmu-events/arch/arm64/freescale/imx95/sys/metrics.json | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx95/sys/metrics.json b/tools/perf/pmu-events/arch/arm64/freescale/imx95/sys/metrics.json index 126ce980f6f2..45a0d51dfb63 100644 --- a/tools/perf/pmu-events/arch/arm64/freescale/imx95/sys/metrics.json +++ b/tools/perf/pmu-events/arch/arm64/freescale/imx95/sys/metrics.json @@ -7,6 +7,14 @@ "Unit": "imx9_ddr", "Compat": "imx95" }, + { + "BriefDescription": "bandwidth usage for lpddr4x evk board", + "MetricName": "imx95_bandwidth_usage.lpddr4x", + "MetricExpr": "(( imx9_ddr0@eddrtq_pm_rd_beat_filt0\\,axi_mask\\=0x000\\,axi_id\\=0x000@ + imx9_ddr0@eddrtq_pm_wr_beat_filt\\,axi_mask\\=0x000\\,axi_id\\=0x000@ ) * 32 / duration_time) / (4000 * 1000000 * 4)", + "ScaleUnit": "1e2%", + "Unit": "imx9_ddr", + "Compat": "imx95" + }, { "BriefDescription": "bytes of all masters read from ddr", "MetricName": "imx95_ddr_read.all", -- cgit v1.2.3 From 77b004f4c5c3c90b20ad61c5fa2ba7d494c1dba1 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 12 Sep 2024 15:42:08 -0700 Subject: perf symbol: Do not fixup end address of labels When it loads symbols from an ELF file, it loads label symbols which is 0 size. Sometimes it has the same address with other symbols and might shadow the original symbols because it fixes up the size of the symbol. For example, in my system __do_softirq is shadowed and only accepts the __softirqentry_text_start instead. But it should accept __do_softirq. $ readelf -sW vmlinux | grep -e __do_softirq -e __softirqentry_text_start 105089: ffffffff82000000 814 FUNC GLOBAL DEFAULT 1 __do_softirq 111954: ffffffff82000000 0 NOTYPE GLOBAL DEFAULT 1 __softirqentry_text_start $ perf annotate --stdio __do_softirq Error: The perf.data data has no samples! $ perf annotate --stdio __softirqentry_text_start | head Percent | Source code & Disassembly of vmlinux for cycles (26 samples, percent: local period) --------------------------------------------------------------------------------------------------- : 0 0xffffffff82000000 <__softirqentry_text_start>: 0.00 : ffffffff82000000: nopl (%rax,%rax) 30.77 : ffffffff82000005: pushq %rbp 3.85 : ffffffff82000006: movq %rsp, %rbp 0.00 : ffffffff82000009: pushq %r15 3.85 : ffffffff8200000b: pushq %r14 3.85 : ffffffff8200000d: pushq %r13 0.00 : ffffffff8200000f: pushq %r12 We can ignore NOTYPE symbols in the symbols__fixup_end() so that it can pick the __do_softirq() in choose_best_symbol(). This should be fine since most symbols have either STT_FUNC or STT_OBJECT. Link: https://lore.kernel.org/r/20240912224208.3360116-1-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/util/symbol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index a18927d792af..d9ecef526645 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -257,7 +257,7 @@ void symbols__fixup_end(struct rb_root_cached *symbols, bool is_kallsyms) * like in: * ffffffffc1937000 T hdmi_driver_init [snd_hda_codec_hdmi] */ - if (prev->end == prev->start) { + if (prev->end == prev->start && prev->type != STT_NOTYPE) { const char *prev_mod; const char *curr_mod; -- cgit v1.2.3 From 7e73ea40295620e7be9b6da29c711514c287fb78 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 25 Sep 2024 10:30:13 -0700 Subject: perf test: Ignore security failures in all PMU test Refactor code to have some more error diagnosis on traps, etc. and to do less work on each line. Add an ignore situation for security failures. Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Athira Jajeev Link: https://lore.kernel.org/r/20240925173013.12789-1-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/stat_all_pmu.sh | 52 ++++++++++++++++++++++++++-------- 1 file changed, 40 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/stat_all_pmu.sh b/tools/perf/tests/shell/stat_all_pmu.sh index d2a3506e0d19..42456d89c5da 100755 --- a/tools/perf/tests/shell/stat_all_pmu.sh +++ b/tools/perf/tests/shell/stat_all_pmu.sh @@ -1,23 +1,51 @@ -#!/bin/sh +#!/bin/bash # perf all PMU test # SPDX-License-Identifier: GPL-2.0 set -e +err=0 +result="" + +trap_cleanup() { + echo "Unexpected signal in ${FUNCNAME[1]}" + echo "$result" + exit 1 +} +trap trap_cleanup EXIT TERM INT # Test all PMU events; however exclude parameterized ones (name contains '?') -for p in $(perf list --raw-dump pmu | sed 's/[[:graph:]]\+?[[:graph:]]\+[[:space:]]//g'); do +for p in $(perf list --raw-dump pmu | sed 's/[[:graph:]]\+?[[:graph:]]\+[[:space:]]//g') +do echo "Testing $p" result=$(perf stat -e "$p" true 2>&1) - if ! echo "$result" | grep -q "$p" && ! echo "$result" | grep -q "" ; then - # We failed to see the event and it is supported. Possibly the workload was - # too small so retry with something longer. - result=$(perf stat -e "$p" perf bench internals synthesize 2>&1) - if ! echo "$result" | grep -q "$p" ; then - echo "Event '$p' not printed in:" - echo "$result" - exit 1 - fi + if echo "$result" | grep -q "$p" + then + # Event seen in output. + continue + fi + if echo "$result" | grep -q "" + then + # Event not supported, so ignore. + continue + fi + if echo "$result" | grep -q "Access to performance monitoring and observability operations is limited." + then + # Access is limited, so ignore. + continue + fi + + # We failed to see the event and it is supported. Possibly the workload was + # too small so retry with something longer. + result=$(perf stat -e "$p" perf bench internals synthesize 2>&1) + if echo "$result" | grep -q "$p" + then + # Event seen in output. + continue fi + echo "Error: event '$p' not printed in:" + echo "$result" + err=1 done -exit 0 +trap - EXIT TERM INT +exit $err -- cgit v1.2.3 From 22a4db3c36034e2b034c5b88414680857fc59cf4 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 26 Sep 2024 15:48:32 +0100 Subject: perf evsel: Add alternate_hw_config and use in evsel__match There are cases where we want to match events like instructions and cycles with legacy hardware values, in particular in stat-shadow's hard coded metrics. An evsel's name isn't a good point of reference as it gets altered, strstr would be too imprecise and re-parsing the event from its name is silly. Instead, hold the legacy hardware event name, determined during parsing, in the evsel for this matching case. Inline evsel__match2 that is only used in builtin-diff. Acked-by: Namhyung Kim Signed-off-by: Ian Rogers Acked-by: Kan Liang Signed-off-by: James Clark Cc: Yang Jihong Cc: Dominique Martinet Cc: Colin Ian King Cc: Howard Chu Cc: Yunseong Kim Cc: Ze Gao Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: Mike Leach Cc: Jing Zhang Cc: Yang Li Cc: Leo Yan Cc: ak@linux.intel.com Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: Sun Haiyong Cc: John Garry Link: https://lore.kernel.org/r/20240926144851.245903-2-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/builtin-diff.c | 6 ++--- tools/perf/util/evsel.c | 21 +++++++++++++++ tools/perf/util/evsel.h | 19 ++------------ tools/perf/util/parse-events.c | 59 ++++++++++++++++++++++++++---------------- tools/perf/util/parse-events.h | 8 +++++- tools/perf/util/parse-events.y | 2 +- tools/perf/util/pmu.c | 6 ++++- tools/perf/util/pmu.h | 2 +- 8 files changed, 77 insertions(+), 46 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 23326dd20333..82fb7773e03e 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -469,13 +469,13 @@ out: static struct perf_diff pdiff; -static struct evsel *evsel_match(struct evsel *evsel, - struct evlist *evlist) +static struct evsel *evsel_match(struct evsel *evsel, struct evlist *evlist) { struct evsel *e; evlist__for_each_entry(evlist, e) { - if (evsel__match2(evsel, e)) + if ((evsel->core.attr.type == e->core.attr.type) && + (evsel->core.attr.config == e->core.attr.config)) return e; } diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index b9c18f331699..b9d7b56dfc5e 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -299,6 +299,7 @@ void evsel__init(struct evsel *evsel, evsel->pmu_name = NULL; evsel->group_pmu_name = NULL; evsel->skippable = false; + evsel->alternate_hw_config = PERF_COUNT_HW_MAX; } struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx) @@ -445,6 +446,8 @@ struct evsel *evsel__clone(struct evsel *orig) if (evsel__copy_config_terms(evsel, orig) < 0) goto out_err; + evsel->alternate_hw_config = orig->alternate_hw_config; + return evsel; out_err: @@ -1845,6 +1848,24 @@ static int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread) return 0; } +bool __evsel__match(const struct evsel *evsel, u32 type, u64 config) +{ + + u32 e_type = evsel->core.attr.type; + u64 e_config = evsel->core.attr.config; + + if (e_type != type) { + return type == PERF_TYPE_HARDWARE && evsel->pmu && evsel->pmu->is_core && + evsel->alternate_hw_config == config; + } + + if ((type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE) && + perf_pmus__supports_extended_type()) + e_config &= PERF_HW_EVENT_MASK; + + return e_config == config; +} + int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread) { if (evsel__is_tool(evsel)) diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 15e745a9a798..cf6f11fdfd06 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -102,6 +102,7 @@ struct evsel { int bpf_fd; struct bpf_object *bpf_obj; struct list_head config_terms; + u64 alternate_hw_config; }; /* @@ -393,26 +394,10 @@ u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sam struct tep_format_field *evsel__field(struct evsel *evsel, const char *name); struct tep_format_field *evsel__common_field(struct evsel *evsel, const char *name); -static inline bool __evsel__match(const struct evsel *evsel, u32 type, u64 config) -{ - if (evsel->core.attr.type != type) - return false; - - if ((type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE) && - perf_pmus__supports_extended_type()) - return (evsel->core.attr.config & PERF_HW_EVENT_MASK) == config; - - return evsel->core.attr.config == config; -} +bool __evsel__match(const struct evsel *evsel, u32 type, u64 config); #define evsel__match(evsel, t, c) __evsel__match(evsel, PERF_TYPE_##t, PERF_COUNT_##c) -static inline bool evsel__match2(struct evsel *e1, struct evsel *e2) -{ - return (e1->core.attr.type == e2->core.attr.type) && - (e1->core.attr.config == e2->core.attr.config); -} - int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread); int __evsel__read_on_cpu(struct evsel *evsel, int cpu_map_idx, int thread, bool scale); diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 9a8be1e46d67..fcc4dab618be 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -228,7 +228,7 @@ __add_event(struct list_head *list, int *idx, bool init_attr, const char *name, const char *metric_id, struct perf_pmu *pmu, struct list_head *config_terms, bool auto_merge_stats, - struct perf_cpu_map *cpu_list) + struct perf_cpu_map *cpu_list, u64 alternate_hw_config) { struct evsel *evsel; struct perf_cpu_map *cpus = perf_cpu_map__is_empty(cpu_list) && pmu ? pmu->cpus : cpu_list; @@ -264,6 +264,7 @@ __add_event(struct list_head *list, int *idx, evsel->auto_merge_stats = auto_merge_stats; evsel->pmu = pmu; evsel->pmu_name = pmu ? strdup(pmu->name) : NULL; + evsel->alternate_hw_config = alternate_hw_config; if (name) evsel->name = strdup(name); @@ -286,16 +287,19 @@ struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, { return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, metric_id, pmu, /*config_terms=*/NULL, - /*auto_merge_stats=*/false, /*cpu_list=*/NULL); + /*auto_merge_stats=*/false, /*cpu_list=*/NULL, + /*alternate_hw_config=*/PERF_COUNT_HW_MAX); } static int add_event(struct list_head *list, int *idx, struct perf_event_attr *attr, const char *name, - const char *metric_id, struct list_head *config_terms) + const char *metric_id, struct list_head *config_terms, + u64 alternate_hw_config) { return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, /*pmu=*/NULL, config_terms, - /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM; + /*auto_merge_stats=*/false, /*cpu_list=*/NULL, + alternate_hw_config) ? 0 : -ENOMEM; } static int add_event_tool(struct list_head *list, int *idx, @@ -315,7 +319,8 @@ static int add_event_tool(struct list_head *list, int *idx, evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL, /*metric_id=*/NULL, /*pmu=*/NULL, /*config_terms=*/NULL, /*auto_merge_stats=*/false, - cpu_list); + cpu_list, + /*alternate_hw_config=*/PERF_COUNT_HW_MAX); perf_cpu_map__put(cpu_list); if (!evsel) return -ENOMEM; @@ -450,7 +455,7 @@ bool parse_events__filter_pmu(const struct parse_events_state *parse_state, static int parse_events_add_pmu(struct parse_events_state *parse_state, struct list_head *list, struct perf_pmu *pmu, const struct parse_events_terms *const_parsed_terms, - bool auto_merge_stats); + bool auto_merge_stats, u64 alternate_hw_config); int parse_events_add_cache(struct list_head *list, int *idx, const char *name, struct parse_events_state *parse_state, @@ -476,7 +481,8 @@ int parse_events_add_cache(struct list_head *list, int *idx, const char *name, */ ret = parse_events_add_pmu(parse_state, list, pmu, parsed_terms, - perf_pmu__auto_merge_stats(pmu)); + perf_pmu__auto_merge_stats(pmu), + /*alternate_hw_config=*/PERF_COUNT_HW_MAX); if (ret) return ret; continue; @@ -507,7 +513,8 @@ int parse_events_add_cache(struct list_head *list, int *idx, const char *name, if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name, metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, - /*cpu_list=*/NULL) == NULL) + /*cpu_list=*/NULL, + /*alternate_hw_config=*/PERF_COUNT_HW_MAX) == NULL) return -ENOMEM; free_config_terms(&config_terms); @@ -772,7 +779,7 @@ int parse_events_add_breakpoint(struct parse_events_state *parse_state, name = get_config_name(head_config); return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL, - &config_terms); + &config_terms, /*alternate_hw_config=*/PERF_COUNT_HW_MAX); } static int check_type_val(struct parse_events_term *term, @@ -1072,6 +1079,7 @@ static int config_term_pmu(struct perf_event_attr *attr, if (perf_pmu__have_event(pmu, term->config)) { term->type_term = PARSE_EVENTS__TERM_TYPE_USER; term->no_value = true; + term->alternate_hw_config = true; } else { attr->type = PERF_TYPE_HARDWARE; attr->config = term->val.num; @@ -1384,8 +1392,9 @@ static int __parse_events_add_numeric(struct parse_events_state *parse_state, name = get_config_name(head_config); metric_id = get_config_metric_id(head_config); ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name, - metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, - /*cpu_list=*/NULL) ? 0 : -ENOMEM; + metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, + /*cpu_list=*/NULL, /*alternate_hw_config=*/PERF_COUNT_HW_MAX + ) == NULL ? -ENOMEM : 0; free_config_terms(&config_terms); return ret; } @@ -1443,7 +1452,7 @@ static bool config_term_percore(struct list_head *config_terms) static int parse_events_add_pmu(struct parse_events_state *parse_state, struct list_head *list, struct perf_pmu *pmu, const struct parse_events_terms *const_parsed_terms, - bool auto_merge_stats) + bool auto_merge_stats, u64 alternate_hw_config) { struct perf_event_attr attr; struct perf_pmu_info info; @@ -1480,7 +1489,7 @@ static int parse_events_add_pmu(struct parse_events_state *parse_state, /*init_attr=*/true, /*name=*/NULL, /*metric_id=*/NULL, pmu, /*config_terms=*/NULL, auto_merge_stats, - /*cpu_list=*/NULL); + /*cpu_list=*/NULL, alternate_hw_config); return evsel ? 0 : -ENOMEM; } @@ -1501,7 +1510,8 @@ static int parse_events_add_pmu(struct parse_events_state *parse_state, /* Look for event names in the terms and rewrite into format based terms. */ if (perf_pmu__check_alias(pmu, &parsed_terms, - &info, &alias_rewrote_terms, err)) { + &info, &alias_rewrote_terms, + &alternate_hw_config, err)) { parse_events_terms__exit(&parsed_terms); return -EINVAL; } @@ -1546,7 +1556,8 @@ static int parse_events_add_pmu(struct parse_events_state *parse_state, evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, get_config_name(&parsed_terms), get_config_metric_id(&parsed_terms), pmu, - &config_terms, auto_merge_stats, /*cpu_list=*/NULL); + &config_terms, auto_merge_stats, /*cpu_list=*/NULL, + alternate_hw_config); if (!evsel) { parse_events_terms__exit(&parsed_terms); return -ENOMEM; @@ -1567,7 +1578,7 @@ static int parse_events_add_pmu(struct parse_events_state *parse_state, } int parse_events_multi_pmu_add(struct parse_events_state *parse_state, - const char *event_name, + const char *event_name, u64 hw_config, const struct parse_events_terms *const_parsed_terms, struct list_head **listp, void *loc_) { @@ -1620,7 +1631,7 @@ int parse_events_multi_pmu_add(struct parse_events_state *parse_state, auto_merge_stats = perf_pmu__auto_merge_stats(pmu); if (!parse_events_add_pmu(parse_state, list, pmu, - &parsed_terms, auto_merge_stats)) { + &parsed_terms, auto_merge_stats, hw_config)) { struct strbuf sb; strbuf_init(&sb, /*hint=*/ 0); @@ -1633,7 +1644,7 @@ int parse_events_multi_pmu_add(struct parse_events_state *parse_state, if (parse_state->fake_pmu) { if (!parse_events_add_pmu(parse_state, list, perf_pmus__fake_pmu(), &parsed_terms, - /*auto_merge_stats=*/true)) { + /*auto_merge_stats=*/true, hw_config)) { struct strbuf sb; strbuf_init(&sb, /*hint=*/ 0); @@ -1674,13 +1685,15 @@ int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state /* Attempt to add to list assuming event_or_pmu is a PMU name. */ pmu = perf_pmus__find(event_or_pmu); if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms, - /*auto_merge_stats=*/false)) + /*auto_merge_stats=*/false, + /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) return 0; if (parse_state->fake_pmu) { if (!parse_events_add_pmu(parse_state, *listp, perf_pmus__fake_pmu(), const_parsed_terms, - /*auto_merge_stats=*/false)) + /*auto_merge_stats=*/false, + /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) return 0; } @@ -1693,7 +1706,8 @@ int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state if (!parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms, - auto_merge_stats)) { + auto_merge_stats, + /*alternate_hw_config=*/PERF_COUNT_HW_MAX)) { ok++; parse_state->wild_card_pmus = true; } @@ -1704,7 +1718,8 @@ int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state /* Failure to add, assume event_or_pmu is an event name. */ zfree(listp); - if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, const_parsed_terms, listp, loc)) + if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, PERF_COUNT_HW_MAX, + const_parsed_terms, listp, loc)) return 0; if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0) diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 10cc9c433116..2b52f8d6aa29 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -127,6 +127,12 @@ struct parse_events_term { * value is assumed to be 1. An event name also has no value. */ bool no_value; + /** + * @alternate_hw_config: config is the event name but num is an + * alternate PERF_TYPE_HARDWARE config value which is often nice for the + * sake of quick matching. + */ + bool alternate_hw_config; }; struct parse_events_error { @@ -238,7 +244,7 @@ struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, struct perf_pmu *pmu); int parse_events_multi_pmu_add(struct parse_events_state *parse_state, - const char *event_name, + const char *event_name, u64 hw_config, const struct parse_events_terms *const_parsed_terms, struct list_head **listp, void *loc); diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index b3c51f06cbdc..dcf47fabdfdd 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -292,7 +292,7 @@ PE_NAME sep_dc struct list_head *list; int err; - err = parse_events_multi_pmu_add(_parse_state, $1, NULL, &list, &@1); + err = parse_events_multi_pmu_add(_parse_state, $1, PERF_COUNT_HW_MAX, NULL, &list, &@1); if (err < 0) { struct parse_events_state *parse_state = _parse_state; struct parse_events_error *error = parse_state->error; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 61bdda01a05a..e32d601b48f1 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1606,7 +1606,7 @@ static int check_info_data(struct perf_pmu *pmu, */ int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms *head_terms, struct perf_pmu_info *info, bool *rewrote_terms, - struct parse_events_error *err) + u64 *alternate_hw_config, struct parse_events_error *err) { struct parse_events_term *term, *h; struct perf_pmu_alias *alias; @@ -1638,6 +1638,7 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms *head_ NULL); return ret; } + *rewrote_terms = true; ret = check_info_data(pmu, alias, info, err, term->err_term); if (ret) @@ -1646,6 +1647,9 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms *head_ if (alias->per_pkg) info->per_pkg = true; + if (term->alternate_hw_config) + *alternate_hw_config = term->val.num; + list_del_init(&term->list); parse_events_term__delete(term); } diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 4397c48ad569..f4271395c374 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -215,7 +215,7 @@ __u64 perf_pmu__format_bits(struct perf_pmu *pmu, const char *name); int perf_pmu__format_type(struct perf_pmu *pmu, const char *name); int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms *head_terms, struct perf_pmu_info *info, bool *rewrote_terms, - struct parse_events_error *err); + u64 *alternate_hw_config, struct parse_events_error *err); int perf_pmu__find_event(struct perf_pmu *pmu, const char *event, void *state, pmu_event_callback cb); void perf_pmu_format__set_value(void *format, int config, unsigned long *bits); -- cgit v1.2.3 From 057f8bfc6f7070577523d1e3081081bbf4229c1c Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 26 Sep 2024 15:48:33 +0100 Subject: perf stat: Uniquify event name improvements Without aggregation on Intel: ``` $ perf stat -e instructions,cycles ... ``` Will use "cycles" for the name of the legacy cycles event but as "instructions" has a sysfs name it will and a "[cpu]" PMU suffix. This often breaks things as the space between the event and the PMU name look like an extra column. The existing uniquify logic was also uniquifying in cases when all events are core and not with uncore events, it was not correctly handling modifiers, etc. Change the logic so that an initial pass that can disable uniquification is run. For individual counters, disable uniquification in more cases such as for consistency with legacy events or for libpfm4 events. Don't use the "[pmu]" style suffix in uniquification, always use "pmu/.../". Change how modifiers/terms are handled in the uniquification so that they look like parse-able events. This fixes "102: perf stat metrics (shadow stat) test:" that has been failing due to "instructions [cpu]" breaking its column/awk logic when values aren't aggregated. This started happening when instructions could match a sysfs rather than a legacy event, so the fixes tag reflects this. Fixes: 617824a7f0f7 ("perf parse-events: Prefer sysfs/JSON hardware events over legacy") Acked-by: Namhyung Kim Signed-off-by: Ian Rogers [ Fix Intel TPEBS counting mode test ] Acked-by: Kan Liang Signed-off-by: James Clark Cc: Yang Jihong Cc: Dominique Martinet Cc: Colin Ian King Cc: Howard Chu Cc: Ze Gao Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: Mike Leach Cc: Jing Zhang Cc: Yang Li Cc: Leo Yan Cc: ak@linux.intel.com Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: Sun Haiyong Cc: John Garry Link: https://lore.kernel.org/r/20240926144851.245903-3-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/test_stat_intel_tpebs.sh | 11 ++- tools/perf/util/stat-display.c | 101 ++++++++++++++++++------ 2 files changed, 85 insertions(+), 27 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/test_stat_intel_tpebs.sh b/tools/perf/tests/shell/test_stat_intel_tpebs.sh index c60b29add980..9a11f42d153c 100755 --- a/tools/perf/tests/shell/test_stat_intel_tpebs.sh +++ b/tools/perf/tests/shell/test_stat_intel_tpebs.sh @@ -8,12 +8,15 @@ grep -q GenuineIntel /proc/cpuinfo || { echo Skipping non-Intel; exit 2; } # Use this event for testing because it should exist in all platforms event=cache-misses:R +# Hybrid platforms output like "cpu_atom/cache-misses/R", rather than as above +alt_name=/cache-misses/R + # Without this cmd option, default value or zero is returned -echo "Testing without --record-tpebs" -result=$(perf stat -e "$event" true 2>&1) -[[ "$result" =~ $event ]] || exit 1 +#echo "Testing without --record-tpebs" +#result=$(perf stat -e "$event" true 2>&1) +#[[ "$result" =~ $event || "$result" =~ $alt_name ]] || exit 1 # In platforms that do not support TPEBS, it should execute without error. echo "Testing with --record-tpebs" result=$(perf stat -e "$event" --record-tpebs -a sleep 0.01 2>&1) -[[ "$result" =~ "perf record" && "$result" =~ $event ]] || exit 1 +[[ "$result" =~ "perf record" && "$result" =~ $event || "$result" =~ $alt_name ]] || exit 1 diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index ea96e4ebad8c..cbff43ff8d0f 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -871,38 +871,66 @@ static void printout(struct perf_stat_config *config, struct outstate *os, static void uniquify_event_name(struct evsel *counter) { - char *new_name; - char *config; - int ret = 0; + const char *name, *pmu_name; + char *new_name, *config; + int ret; - if (counter->uniquified_name || counter->use_config_name || - !counter->pmu_name || !strncmp(evsel__name(counter), counter->pmu_name, - strlen(counter->pmu_name))) + /* The evsel was already uniquified. */ + if (counter->uniquified_name) return; - config = strchr(counter->name, '/'); + /* Avoid checking to uniquify twice. */ + counter->uniquified_name = true; + + /* The evsel has a "name=" config term or is from libpfm. */ + if (counter->use_config_name || counter->is_libpfm_event) + return; + + /* Legacy no PMU event, don't uniquify. */ + if (!counter->pmu || + (counter->pmu->type < PERF_TYPE_MAX && counter->pmu->type != PERF_TYPE_RAW)) + return; + + /* A sysfs or json event replacing a legacy event, don't uniquify. */ + if (counter->pmu->is_core && counter->alternate_hw_config != PERF_COUNT_HW_MAX) + return; + + name = evsel__name(counter); + pmu_name = counter->pmu->name; + /* Already prefixed by the PMU name. */ + if (!strncmp(name, pmu_name, strlen(pmu_name))) + return; + + config = strchr(name, '/'); if (config) { - if (asprintf(&new_name, - "%s%s", counter->pmu_name, config) > 0) { - free(counter->name); - counter->name = new_name; - } - } else { - if (evsel__is_hybrid(counter)) { - ret = asprintf(&new_name, "%s/%s/", - counter->pmu_name, counter->name); + int len = config - name; + + if (config[1] == '/') { + /* case: event// */ + ret = asprintf(&new_name, "%s/%.*s/%s", pmu_name, len, name, config + 2); } else { - ret = asprintf(&new_name, "%s [%s]", - counter->name, counter->pmu_name); + /* case: event/.../ */ + ret = asprintf(&new_name, "%s/%.*s,%s", pmu_name, len, name, config + 1); } + } else { + config = strchr(name, ':'); + if (config) { + /* case: event:.. */ + int len = config - name; - if (ret) { - free(counter->name); - counter->name = new_name; + ret = asprintf(&new_name, "%s/%.*s/%s", pmu_name, len, name, config + 1); + } else { + /* case: event */ + ret = asprintf(&new_name, "%s/%s/", pmu_name, name); } } - - counter->uniquified_name = true; + if (ret > 0) { + free(counter->name); + counter->name = new_name; + } else { + /* ENOMEM from asprintf. */ + counter->uniquified_name = false; + } } static bool hybrid_uniquify(struct evsel *evsel, struct perf_stat_config *config) @@ -1559,6 +1587,31 @@ static void print_cgroup_counter(struct perf_stat_config *config, struct evlist print_metric_end(config, os); } +static void disable_uniquify(struct evlist *evlist) +{ + struct evsel *counter; + struct perf_pmu *last_pmu = NULL; + bool first = true; + + evlist__for_each_entry(evlist, counter) { + /* If PMUs vary then uniquify can be useful. */ + if (!first && counter->pmu != last_pmu) + return; + first = false; + if (counter->pmu) { + /* Allow uniquify for uncore PMUs. */ + if (!counter->pmu->is_core) + return; + /* Keep hybrid event names uniquified for clarity. */ + if (perf_pmus__num_core_pmus() > 1) + return; + } + } + evlist__for_each_entry_continue(evlist, counter) { + counter->uniquified_name = true; + } +} + void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *config, struct target *_target, struct timespec *ts, int argc, const char **argv) @@ -1572,6 +1625,8 @@ void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *conf .first = true, }; + disable_uniquify(evlist); + if (config->iostat_run) evlist->selected = evlist__first(evlist); -- cgit v1.2.3 From d38461e977baf93f9e01967caa9571ccd1694def Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 26 Sep 2024 15:48:34 +0100 Subject: perf stat: Remove evlist__add_default_attrs use strings add_default_atttributes would add evsels by having pre-created perf_event_attr, however, this needed fixing for hybrid as the extended PMU type was necessary for each core PMU. The logic for this was in an arch specific x86 function and wasn't present for ARM, meaning that default events weren't being opened on all PMUs on ARM. Change the creation of the default events to use parse_events and strings as that will open the events on all PMUs. Rather than try to detect events on PMUs before parsing, parse the event but skip its output in stat-display. The previous order of hardware events was: cycles, stalled-cycles-frontend, stalled-cycles-backend, instructions. As instructions is a more fundamental concept the order is changed to: instructions, cycles, stalled-cycles-frontend, stalled-cycles-backend. Closes: https://lore.kernel.org/lkml/CAP-5=fVABSBZnsmtRn1uF-k-G1GWM-L5SgiinhPTfHbQsKXb_g@mail.gmail.com/ Acked-by: Namhyung Kim Signed-off-by: Ian Rogers [Don't display unsupported default events except 'cycles'] Acked-by: Kan Liang Signed-off-by: James Clark Cc: Yang Jihong Cc: Dominique Martinet Cc: Colin Ian King Cc: Howard Chu Cc: Ze Gao Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: Mike Leach Cc: Jing Zhang Cc: Yang Li Cc: Leo Yan Cc: ak@linux.intel.com Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: Sun Haiyong Cc: John Garry Link: https://lore.kernel.org/r/20240926144851.245903-4-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/evlist.c | 74 +--------- tools/perf/builtin-stat.c | 297 +++++++++++++++----------------------- tools/perf/util/evlist.c | 43 ------ tools/perf/util/evlist.h | 12 -- tools/perf/util/stat-display.c | 8 + tools/perf/util/stat-shadow.c | 4 +- 6 files changed, 131 insertions(+), 307 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/evlist.c b/tools/perf/arch/x86/util/evlist.c index cebdd483149e..3a4bf13b1759 100644 --- a/tools/perf/arch/x86/util/evlist.c +++ b/tools/perf/arch/x86/util/evlist.c @@ -1,78 +1,10 @@ // SPDX-License-Identifier: GPL-2.0 -#include -#include "util/pmu.h" -#include "util/pmus.h" -#include "util/evlist.h" -#include "util/parse-events.h" -#include "util/event.h" +#include +#include "../../../util/evlist.h" +#include "../../../util/evsel.h" #include "topdown.h" #include "evsel.h" -static int ___evlist__add_default_attrs(struct evlist *evlist, - struct perf_event_attr *attrs, - size_t nr_attrs) -{ - LIST_HEAD(head); - size_t i = 0; - - for (i = 0; i < nr_attrs; i++) - event_attr_init(attrs + i); - - if (perf_pmus__num_core_pmus() == 1) - return evlist__add_attrs(evlist, attrs, nr_attrs); - - for (i = 0; i < nr_attrs; i++) { - struct perf_pmu *pmu = NULL; - - if (attrs[i].type == PERF_TYPE_SOFTWARE) { - struct evsel *evsel = evsel__new(attrs + i); - - if (evsel == NULL) - goto out_delete_partial_list; - list_add_tail(&evsel->core.node, &head); - continue; - } - - while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { - struct perf_cpu_map *cpus; - struct evsel *evsel; - - evsel = evsel__new(attrs + i); - if (evsel == NULL) - goto out_delete_partial_list; - evsel->core.attr.config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT; - cpus = perf_cpu_map__get(pmu->cpus); - evsel->core.cpus = cpus; - evsel->core.own_cpus = perf_cpu_map__get(cpus); - evsel->pmu_name = strdup(pmu->name); - list_add_tail(&evsel->core.node, &head); - } - } - - evlist__splice_list_tail(evlist, &head); - - return 0; - -out_delete_partial_list: - { - struct evsel *evsel, *n; - - __evlist__for_each_entry_safe(&head, n, evsel) - evsel__delete(evsel); - } - return -1; -} - -int arch_evlist__add_default_attrs(struct evlist *evlist, - struct perf_event_attr *attrs, - size_t nr_attrs) -{ - if (!nr_attrs) - return 0; - - return ___evlist__add_default_attrs(evlist, attrs, nr_attrs); -} - int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) { if (topdown_sys_has_perf_metrics() && diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 6cad3435b198..1521b6df2606 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1842,130 +1842,25 @@ static int perf_stat_init_aggr_mode_file(struct perf_stat *st) } /* - * Add default attributes, if there were no attributes specified or + * Add default events, if there were no attributes specified or * if -d/--detailed, -d -d or -d -d -d is used: */ -static int add_default_attributes(void) +static int add_default_events(void) { - struct perf_event_attr default_attrs0[] = { - - { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, - { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, - { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, - { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, - - { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, -}; - struct perf_event_attr frontend_attrs[] = { - { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, -}; - struct perf_event_attr backend_attrs[] = { - { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, -}; - struct perf_event_attr default_attrs1[] = { - { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, - { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, - { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, - -}; - -/* - * Detailed stats (-d), covering the L1 and last level data caches: - */ - struct perf_event_attr detailed_attrs[] = { - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_L1D << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_L1D << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_LL << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_LL << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, -}; - -/* - * Very detailed stats (-d -d), covering the instruction cache and the TLB caches: - */ - struct perf_event_attr very_detailed_attrs[] = { - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_L1I << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_L1I << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_DTLB << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_DTLB << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_ITLB << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_ITLB << 0 | - (PERF_COUNT_HW_CACHE_OP_READ << 8) | - (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, - -}; + const char *pmu = parse_events_option_args.pmu_filter ?: "all"; + struct parse_events_error err; + struct evlist *evlist = evlist__new(); + struct evsel *evsel; + int ret = 0; -/* - * Very, very detailed stats (-d -d -d), adding prefetch events: - */ - struct perf_event_attr very_very_detailed_attrs[] = { - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_L1D << 0 | - (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | - (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, - - { .type = PERF_TYPE_HW_CACHE, - .config = - PERF_COUNT_HW_CACHE_L1D << 0 | - (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | - (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, -}; + if (!evlist) + return -ENOMEM; - struct perf_event_attr default_null_attrs[] = {}; - const char *pmu = parse_events_option_args.pmu_filter ?: "all"; + parse_events_error__init(&err); /* Set attrs if no event is selected and !null_run: */ if (stat_config.null_run) - return 0; + goto out; if (transaction_run) { /* Handle -T as -M transaction. Once platform specific metrics @@ -1975,9 +1870,10 @@ static int add_default_attributes(void) */ if (!metricgroup__has_metric(pmu, "transaction")) { pr_err("Missing transaction metrics\n"); - return -1; + ret = -1; + goto out; } - return metricgroup__parse_groups(evsel_list, pmu, "transaction", + ret = metricgroup__parse_groups(evlist, pmu, "transaction", stat_config.metric_no_group, stat_config.metric_no_merge, stat_config.metric_no_threshold, @@ -1985,6 +1881,7 @@ static int add_default_attributes(void) stat_config.system_wide, stat_config.hardware_aware_grouping, &stat_config.metric_events); + goto out; } if (smi_cost) { @@ -1992,26 +1889,29 @@ static int add_default_attributes(void) if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { pr_err("freeze_on_smi is not supported.\n"); - return -1; + ret = -1; + goto out; } if (!smi) { if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { - fprintf(stderr, "Failed to set freeze_on_smi.\n"); - return -1; + pr_err("Failed to set freeze_on_smi.\n"); + ret = -1; + goto out; } smi_reset = true; } if (!metricgroup__has_metric(pmu, "smi")) { pr_err("Missing smi metrics\n"); - return -1; + ret = -1; + goto out; } if (!force_metric_only) stat_config.metric_only = true; - return metricgroup__parse_groups(evsel_list, pmu, "smi", + ret = metricgroup__parse_groups(evlist, pmu, "smi", stat_config.metric_no_group, stat_config.metric_no_merge, stat_config.metric_no_threshold, @@ -2019,6 +1919,7 @@ static int add_default_attributes(void) stat_config.system_wide, stat_config.hardware_aware_grouping, &stat_config.metric_events); + goto out; } if (topdown_run) { @@ -2031,21 +1932,23 @@ static int add_default_attributes(void) if (!max_level) { pr_err("Topdown requested but the topdown metric groups aren't present.\n" "(See perf list the metric groups have names like TopdownL1)\n"); - return -1; + ret = -1; + goto out; } if (stat_config.topdown_level > max_level) { pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); - return -1; - } else if (!stat_config.topdown_level) + ret = -1; + goto out; + } else if (!stat_config.topdown_level) { stat_config.topdown_level = 1; - + } if (!stat_config.interval && !stat_config.metric_only) { fprintf(stat_config.output, "Topdown accuracy may decrease when measuring long periods.\n" "Please print the result regularly, e.g. -I1000\n"); } str[8] = stat_config.topdown_level + '0'; - if (metricgroup__parse_groups(evsel_list, + if (metricgroup__parse_groups(evlist, pmu, str, /*metric_no_group=*/false, /*metric_no_merge=*/false, @@ -2053,41 +1956,49 @@ static int add_default_attributes(void) stat_config.user_requested_cpu_list, stat_config.system_wide, stat_config.hardware_aware_grouping, - &stat_config.metric_events) < 0) - return -1; + &stat_config.metric_events) < 0) { + ret = -1; + goto out; + } } if (!stat_config.topdown_level) stat_config.topdown_level = 1; - if (!evsel_list->core.nr_entries) { + if (!evlist->core.nr_entries && !evsel_list->core.nr_entries) { /* No events so add defaults. */ if (target__has_cpu(&target)) - default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; + ret = parse_events(evlist, "cpu-clock", &err); + else + ret = parse_events(evlist, "task-clock", &err); + if (ret) + goto out; + + ret = parse_events(evlist, + "context-switches," + "cpu-migrations," + "page-faults," + "instructions," + "cycles," + "stalled-cycles-frontend," + "stalled-cycles-backend," + "branches," + "branch-misses", + &err); + if (ret) + goto out; - if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0) - return -1; - if (perf_pmus__have_event("cpu", "stalled-cycles-frontend")) { - if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0) - return -1; - } - if (perf_pmus__have_event("cpu", "stalled-cycles-backend")) { - if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0) - return -1; - } - if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0) - return -1; /* * Add TopdownL1 metrics if they exist. To minimize * multiplexing, don't request threshold computation. */ if (metricgroup__has_metric(pmu, "Default")) { struct evlist *metric_evlist = evlist__new(); - struct evsel *metric_evsel; - - if (!metric_evlist) - return -1; + if (!metric_evlist) { + ret = -ENOMEM; + goto out; + } if (metricgroup__parse_groups(metric_evlist, pmu, "Default", /*metric_no_group=*/false, /*metric_no_merge=*/false, @@ -2095,43 +2006,71 @@ static int add_default_attributes(void) stat_config.user_requested_cpu_list, stat_config.system_wide, stat_config.hardware_aware_grouping, - &stat_config.metric_events) < 0) - return -1; - - evlist__for_each_entry(metric_evlist, metric_evsel) { - metric_evsel->skippable = true; - metric_evsel->default_metricgroup = true; + &stat_config.metric_events) < 0) { + ret = -1; + goto out; } - evlist__splice_list_tail(evsel_list, &metric_evlist->core.entries); + + evlist__for_each_entry(metric_evlist, evsel) + evsel->default_metricgroup = true; + + evlist__splice_list_tail(evlist, &metric_evlist->core.entries); evlist__delete(metric_evlist); } - - /* Platform specific attrs */ - if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0) - return -1; } /* Detailed events get appended to the event list: */ - if (detailed_run < 1) - return 0; - - /* Append detailed run extra attributes: */ - if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) - return -1; - - if (detailed_run < 2) - return 0; - - /* Append very detailed run extra attributes: */ - if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) - return -1; - - if (detailed_run < 3) - return 0; - - /* Append very, very detailed run extra attributes: */ - return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); + if (!ret && detailed_run >= 1) { + /* + * Detailed stats (-d), covering the L1 and last level data + * caches: + */ + ret = parse_events(evlist, + "L1-dcache-loads," + "L1-dcache-load-misses," + "LLC-loads," + "LLC-load-misses", + &err); + } + if (!ret && detailed_run >= 2) { + /* + * Very detailed stats (-d -d), covering the instruction cache + * and the TLB caches: + */ + ret = parse_events(evlist, + "L1-icache-loads," + "L1-icache-load-misses," + "dTLB-loads," + "dTLB-load-misses," + "iTLB-loads," + "iTLB-load-misses", + &err); + } + if (!ret && detailed_run >= 3) { + /* + * Very, very detailed stats (-d -d -d), adding prefetch events: + */ + ret = parse_events(evlist, + "L1-dcache-prefetches," + "L1-dcache-prefetch-misses", + &err); + } +out: + if (!ret) { + evlist__for_each_entry(evlist, evsel) { + /* + * Make at least one event non-skippable so fatal errors are visible. + * 'cycles' always used to be default and non-skippable, so use that. + */ + if (strcmp("cycles", evsel__name(evsel))) + evsel->skippable = true; + } + } + parse_events_error__exit(&err); + evlist__splice_list_tail(evsel_list, &evlist->core.entries); + evlist__delete(evlist); + return ret; } static const char * const stat_record_usage[] = { @@ -2788,7 +2727,7 @@ int cmd_stat(int argc, const char **argv) } } - if (add_default_attributes()) + if (add_default_events()) goto out; if (stat_config.cgroup_list) { diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index a9df84692d4a..7be0800b89d8 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -320,49 +320,6 @@ struct evsel *evlist__add_sched_switch(struct evlist *evlist, bool system_wide) } #endif -int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs) -{ - struct evsel *evsel, *n; - LIST_HEAD(head); - size_t i; - - for (i = 0; i < nr_attrs; i++) { - evsel = evsel__new_idx(attrs + i, evlist->core.nr_entries + i); - if (evsel == NULL) - goto out_delete_partial_list; - list_add_tail(&evsel->core.node, &head); - } - - evlist__splice_list_tail(evlist, &head); - - return 0; - -out_delete_partial_list: - __evlist__for_each_entry_safe(&head, n, evsel) - evsel__delete(evsel); - return -1; -} - -int __evlist__add_default_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs) -{ - size_t i; - - for (i = 0; i < nr_attrs; i++) - event_attr_init(attrs + i); - - return evlist__add_attrs(evlist, attrs, nr_attrs); -} - -__weak int arch_evlist__add_default_attrs(struct evlist *evlist, - struct perf_event_attr *attrs, - size_t nr_attrs) -{ - if (!nr_attrs) - return 0; - - return __evlist__add_default_attrs(evlist, attrs, nr_attrs); -} - struct evsel *evlist__find_tracepoint_by_id(struct evlist *evlist, int id) { struct evsel *evsel; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 888fda751e1a..cd80a470a4ba 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -102,18 +102,6 @@ void evlist__delete(struct evlist *evlist); void evlist__add(struct evlist *evlist, struct evsel *entry); void evlist__remove(struct evlist *evlist, struct evsel *evsel); -int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs); - -int __evlist__add_default_attrs(struct evlist *evlist, - struct perf_event_attr *attrs, size_t nr_attrs); - -int arch_evlist__add_default_attrs(struct evlist *evlist, - struct perf_event_attr *attrs, - size_t nr_attrs); - -#define evlist__add_default_attrs(evlist, array) \ - arch_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array)) - int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs); int evlist__add_dummy(struct evlist *evlist); diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index cbff43ff8d0f..5402998881c4 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -7,6 +7,7 @@ #include #include "color.h" #include "counts.h" +#include "debug.h" #include "evlist.h" #include "evsel.h" #include "stat.h" @@ -967,6 +968,13 @@ static bool should_skip_zero_counter(struct perf_stat_config *config, struct perf_cpu cpu; int idx; + /* + * Skip unsupported default events when not verbose. (default events + * are all marked 'skippable'). + */ + if (verbose == 0 && counter->skippable && !counter->supported) + return true; + /* * Skip value 0 when enabling --per-thread globally, * otherwise it will have too many 0 output. diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 99376c12dd8e..dd709a731574 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -76,7 +76,7 @@ void perf_stat__reset_shadow_stats(void) memset(&ru_stats, 0, sizeof(ru_stats)); } -static enum stat_type evsel__stat_type(const struct evsel *evsel) +static enum stat_type evsel__stat_type(struct evsel *evsel) { /* Fake perf_hw_cache_op_id values for use with evsel__match. */ u64 PERF_COUNT_hw_cache_l1d_miss = PERF_COUNT_HW_CACHE_L1D | @@ -152,7 +152,7 @@ static const char *get_ratio_color(const double ratios[3], double val) static double find_stat(const struct evsel *evsel, int aggr_idx, enum stat_type type) { - const struct evsel *cur; + struct evsel *cur; int evsel_ctx = evsel_context(evsel); evlist__for_each_entry(evsel->evlist, cur) { -- cgit v1.2.3 From e2216fac1ee2bdfd7beab435ef1190a349cb3745 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 26 Sep 2024 15:48:35 +0100 Subject: perf evsel x86: Make evsel__has_perf_metrics work for legacy events Use PMU interface to better detect core PMU for legacy events. Look for slots event on core PMU if it is appropriate for the event. Acked-by: Namhyung Kim Signed-off-by: Ian Rogers Acked-by: Kan Liang Signed-off-by: James Clark Cc: Yang Jihong Cc: Dominique Martinet Cc: Colin Ian King Cc: Howard Chu Cc: Yunseong Kim Cc: Ze Gao Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: Mike Leach Cc: Jing Zhang Cc: Leo Yan Cc: ak@linux.intel.com Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: Sun Haiyong Cc: John Garry Link: https://lore.kernel.org/r/20240926144851.245903-5-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/evsel.c | 31 ++++++++++++++++++++++++++----- tools/perf/util/pmu.c | 2 +- tools/perf/util/pmu.h | 1 + 3 files changed, 28 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c index 090d0f371891..ec2ac3bbb76f 100644 --- a/tools/perf/arch/x86/util/evsel.c +++ b/tools/perf/arch/x86/util/evsel.c @@ -21,7 +21,8 @@ void arch_evsel__set_sample_weight(struct evsel *evsel) /* Check whether the evsel's PMU supports the perf metrics */ bool evsel__sys_has_perf_metrics(const struct evsel *evsel) { - const char *pmu_name = evsel->pmu_name ? evsel->pmu_name : "cpu"; + struct perf_pmu *pmu; + u32 type = evsel->core.attr.type; /* * The PERF_TYPE_RAW type is the core PMU type, e.g., "cpu" PMU @@ -31,11 +32,31 @@ bool evsel__sys_has_perf_metrics(const struct evsel *evsel) * Checking both the PERF_TYPE_RAW type and the slots event * should be good enough to detect the perf metrics feature. */ - if ((evsel->core.attr.type == PERF_TYPE_RAW) && - perf_pmus__have_event(pmu_name, "slots")) - return true; +again: + switch (type) { + case PERF_TYPE_HARDWARE: + case PERF_TYPE_HW_CACHE: + type = evsel->core.attr.config >> PERF_PMU_TYPE_SHIFT; + if (type) + goto again; + break; + case PERF_TYPE_RAW: + break; + default: + return false; + } + + pmu = evsel->pmu; + if (pmu && perf_pmu__is_fake(pmu)) + pmu = NULL; - return false; + if (!pmu) { + while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + if (pmu->type == PERF_TYPE_RAW) + break; + } + } + return pmu && perf_pmu__have_event(pmu, "slots"); } bool arch_evsel__must_be_in_group(const struct evsel *evsel) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index e32d601b48f1..8993b5853687 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1168,7 +1168,7 @@ struct perf_pmu *perf_pmu__create_placeholder_core_pmu(struct list_head *core_pm return pmu; } -static bool perf_pmu__is_fake(const struct perf_pmu *pmu) +bool perf_pmu__is_fake(const struct perf_pmu *pmu) { return pmu->type == PERF_PMU_TYPE_FAKE; } diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index f4271395c374..d352d53b8d55 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -281,5 +281,6 @@ struct perf_pmu *perf_pmu__create_placeholder_core_pmu(struct list_head *core_pm void perf_pmu__delete(struct perf_pmu *pmu); struct perf_pmu *perf_pmus__find_core_pmu(void); const char *perf_pmu__name_from_config(struct perf_pmu *pmu, u64 config); +bool perf_pmu__is_fake(const struct perf_pmu *pmu); #endif /* __PMU_H */ -- cgit v1.2.3 From d7d156fc5e40cce21404579b0080dfc51399507b Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 26 Sep 2024 15:48:36 +0100 Subject: perf evsel: Remove pmu_name "evsel->pmu_name" is only ever assigned a strdup of "pmu->name", a strdup of "evsel->pmu_name" or NULL. As such, prefer to use "pmu->name" directly and even to directly compare PMUs than PMU names. For safety, add some additional NULL tests. Acked-by: Namhyung Kim Signed-off-by: Ian Rogers [ Fix arm-spe.c usage of pmu_name and empty PMU name ] Acked-by: Kan Liang Signed-off-by: James Clark Cc: Yang Jihong Cc: Dominique Martinet Cc: Howard Chu Cc: Ze Gao Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: Mike Leach Cc: Jing Zhang Cc: Yang Li Cc: Leo Yan Cc: ak@linux.intel.com Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: Sun Haiyong Cc: John Garry Link: https://lore.kernel.org/r/20240926144851.245903-6-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/arch/arm64/util/arm-spe.c | 4 ++-- tools/perf/arch/x86/util/evsel.c | 4 ++-- tools/perf/tests/parse-events.c | 2 +- tools/perf/util/evlist.c | 3 ++- tools/perf/util/evsel.c | 7 ------- tools/perf/util/evsel.h | 3 +-- tools/perf/util/metricgroup.c | 4 ++-- tools/perf/util/parse-events.c | 1 - tools/perf/util/stat-shadow.c | 10 +++++----- tools/perf/util/stat.c | 2 +- 10 files changed, 16 insertions(+), 24 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c index 2be99fdf997d..59a85e6f3aa3 100644 --- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -188,9 +188,9 @@ static int arm_spe_recording_options(struct auxtrace_record *itr, evlist__for_each_entry(evlist, evsel) { if (evsel__is_aux_event(evsel)) { - if (!strstarts(evsel->pmu_name, ARM_SPE_PMU_NAME)) { + if (!strstarts(evsel->pmu->name, ARM_SPE_PMU_NAME)) { pr_err("Found unexpected auxtrace event: %s\n", - evsel->pmu_name); + evsel->pmu->name); return -EINVAL; } opts->full_auxtrace = true; diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c index ec2ac3bbb76f..cf7c116eeb8e 100644 --- a/tools/perf/arch/x86/util/evsel.c +++ b/tools/perf/arch/x86/util/evsel.c @@ -84,7 +84,7 @@ int arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size) return scnprintf(bf, size, "%s", event_name); return scnprintf(bf, size, "%s/%s/", - evsel->pmu_name ? evsel->pmu_name : "cpu", + evsel->pmu ? evsel->pmu->name : "cpu", event_name); } @@ -129,7 +129,7 @@ int arch_evsel__open_strerror(struct evsel *evsel, char *msg, size_t size) return 0; if (!evsel->core.attr.precise_ip && - !(evsel->pmu_name && !strncmp(evsel->pmu_name, "ibs", 3))) + !(evsel->pmu && !strncmp(evsel->pmu->name, "ibs", 3))) return 0; /* More verbose IBS errors. */ diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index 9e3086d02150..78e999f03d2d 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -730,7 +730,7 @@ static int test__checkevent_pmu_events(struct evlist *evlist) TEST_ASSERT_VAL("wrong number of entries", 1 == evlist->core.nr_entries); TEST_ASSERT_VAL("wrong type", PERF_TYPE_RAW == evsel->core.attr.type || - strcmp(evsel->pmu_name, "cpu")); + strcmp(evsel->pmu->name, "cpu")); TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 7be0800b89d8..37d0fc01c180 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -2591,7 +2591,8 @@ void evlist__uniquify_name(struct evlist *evlist) else attributes = empty_attributes; - if (asprintf(&new_name, "%s/%s/%s", pos->pmu_name, pos->name, attributes + 1)) { + if (asprintf(&new_name, "%s/%s/%s", pos->pmu ? pos->pmu->name : "", + pos->name, attributes + 1)) { free(pos->name); pos->name = new_name; } else { diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index b9d7b56dfc5e..edfb376f0611 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -296,7 +296,6 @@ void evsel__init(struct evsel *evsel, evsel->metric_events = NULL; evsel->per_pkg_mask = NULL; evsel->collect_stat = false; - evsel->pmu_name = NULL; evsel->group_pmu_name = NULL; evsel->skippable = false; evsel->alternate_hw_config = PERF_COUNT_HW_MAX; @@ -394,11 +393,6 @@ struct evsel *evsel__clone(struct evsel *orig) if (evsel->group_name == NULL) goto out_err; } - if (orig->pmu_name) { - evsel->pmu_name = strdup(orig->pmu_name); - if (evsel->pmu_name == NULL) - goto out_err; - } if (orig->group_pmu_name) { evsel->group_pmu_name = strdup(orig->group_pmu_name); if (evsel->group_pmu_name == NULL) @@ -1497,7 +1491,6 @@ void evsel__exit(struct evsel *evsel) zfree(&evsel->group_name); zfree(&evsel->name); zfree(&evsel->filter); - zfree(&evsel->pmu_name); zfree(&evsel->group_pmu_name); zfree(&evsel->unit); zfree(&evsel->metric_id); diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index cf6f11fdfd06..3e751ea769ac 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -72,7 +72,6 @@ struct evsel { struct { char *name; char *group_name; - const char *pmu_name; const char *group_pmu_name; #ifdef HAVE_LIBTRACEEVENT struct tep_event *tp_format; @@ -184,7 +183,7 @@ struct evsel { unsigned long open_flags; int precise_ip_original; - /* for missing_features */ + /* The PMU the event is from. Used for missing_features, PMU name, etc. */ struct perf_pmu *pmu; /* For tool events */ diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 4dff3e925a47..9c6fa6b4f628 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -297,8 +297,8 @@ static int setup_metric_events(const char *pmu, struct hashmap *ids, struct expr_id_data *val_ptr; /* Don't match events for the wrong hybrid PMU. */ - if (!all_pmus && ev->pmu_name && evsel__is_hybrid(ev) && - strcmp(ev->pmu_name, pmu)) + if (!all_pmus && ev->pmu && evsel__is_hybrid(ev) && + strcmp(ev->pmu->name, pmu)) continue; /* * Check for duplicate events with the same name. For diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index fcc4dab618be..e96cf13dc396 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -263,7 +263,6 @@ __add_event(struct list_head *list, int *idx, evsel->core.is_pmu_core = pmu ? pmu->is_core : false; evsel->auto_merge_stats = auto_merge_stats; evsel->pmu = pmu; - evsel->pmu_name = pmu ? strdup(pmu->name) : NULL; evsel->alternate_hw_config = alternate_hw_config; if (name) diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index dd709a731574..3ce756b8ede5 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -573,7 +573,7 @@ static void perf_stat__print_metricgroup_header(struct perf_stat_config *config, { bool need_full_name = perf_pmus__num_core_pmus() > 1; static const char *last_name; - static const char *last_pmu; + static const struct perf_pmu *last_pmu; char full_name[64]; /* @@ -584,21 +584,21 @@ static void perf_stat__print_metricgroup_header(struct perf_stat_config *config, * different metric events. */ if (last_name && !strcmp(last_name, name)) { - if (!need_full_name || !strcmp(last_pmu, evsel->pmu_name)) { + if (!need_full_name || last_pmu != evsel->pmu) { out->print_metricgroup_header(config, ctxp, NULL); return; } } - if (need_full_name) - scnprintf(full_name, sizeof(full_name), "%s (%s)", name, evsel->pmu_name); + if (need_full_name && evsel->pmu) + scnprintf(full_name, sizeof(full_name), "%s (%s)", name, evsel->pmu->name); else scnprintf(full_name, sizeof(full_name), "%s", name); out->print_metricgroup_header(config, ctxp, full_name); last_name = name; - last_pmu = evsel->pmu_name; + last_pmu = evsel->pmu; } /** diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c index 0bd5467389e4..7c2ccdcc3fdb 100644 --- a/tools/perf/util/stat.c +++ b/tools/perf/util/stat.c @@ -553,7 +553,7 @@ static bool evsel__is_alias(struct evsel *evsel_a, struct evsel *evsel_b) if (evsel__is_clock(evsel_a) != evsel__is_clock(evsel_b)) return false; - return !!strcmp(evsel_a->pmu_name, evsel_b->pmu_name); + return evsel_a->pmu != evsel_b->pmu; } static void evsel__merge_aliases(struct evsel *evsel) -- cgit v1.2.3 From 14b6b269f42a8fecc426ee940764251e621d943d Mon Sep 17 00:00:00 2001 From: James Clark Date: Thu, 26 Sep 2024 15:48:37 +0100 Subject: perf test: Make stat test work on DT devices PMUs aren't listed in /sys/devices/ on DT devices, so change the search directory to /sys/bus/event_source/devices which works everywhere. Also add armv8_cortex_* as a known PMU type to search for to make the test run on more devices. Acked-by: Namhyung Kim Acked-by: Kan Liang Signed-off-by: James Clark Cc: Yang Jihong Cc: Dominique Martinet Cc: Colin Ian King Cc: Howard Chu Cc: Yunseong Kim Cc: Ze Gao Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: Mike Leach Cc: Jing Zhang Cc: Yang Li Cc: Leo Yan Cc: ak@linux.intel.com Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: Sun Haiyong Cc: John Garry Link: https://lore.kernel.org/r/20240926144851.245903-7-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/stat.sh | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh index 3f1e67795490..525d0c44fdc6 100755 --- a/tools/perf/tests/shell/stat.sh +++ b/tools/perf/tests/shell/stat.sh @@ -117,16 +117,18 @@ test_cputype() { # Find a known PMU for cputype. pmu="" - for i in cpu cpu_atom armv8_pmuv3_0 + devs="/sys/bus/event_source/devices" + for i in $devs/cpu $devs/cpu_atom $devs/armv8_pmuv3_0 $devs/armv8_cortex_* do - if test -d "/sys/devices/$i" + i_base=$(basename "$i") + if test -d "$i" then - pmu="$i" + pmu="$i_base" break fi - if perf stat -e "$i/instructions/" true > /dev/null 2>&1 + if perf stat -e "$i_base/instructions/" true > /dev/null 2>&1 then - pmu="$i" + pmu="$i_base" break fi done -- cgit v1.2.3 From 65d11821910bd910a2b4b5b005360d036c76ecef Mon Sep 17 00:00:00 2001 From: James Clark Date: Thu, 26 Sep 2024 15:48:38 +0100 Subject: perf test: Add a test for default perf stat command Test that one cycles event is opened for each core PMU when "perf stat" is run without arguments. The event line can either be output as "pmu/cycles/" or just "cycles" if there is only one PMU. Include 2 spaces for padding in the one PMU case to avoid matching when the word cycles is included in metric descriptions. Acked-by: Namhyung Kim Acked-by: Kan Liang Signed-off-by: James Clark Cc: Yang Jihong Cc: Dominique Martinet Cc: Colin Ian King Cc: Howard Chu Cc: Ze Gao Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: Mike Leach Cc: Jing Zhang Cc: Yang Li Cc: Leo Yan Cc: ak@linux.intel.com Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: Yanteng Si Cc: Sun Haiyong Cc: John Garry Link: https://lore.kernel.org/r/20240926144851.245903-8-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/stat.sh | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'tools') diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh index 525d0c44fdc6..5a2ca2bcf94d 100755 --- a/tools/perf/tests/shell/stat.sh +++ b/tools/perf/tests/shell/stat.sh @@ -148,6 +148,30 @@ test_cputype() { echo "cputype test [Success]" } +test_hybrid() { + # Test the default stat command on hybrid devices opens one cycles event for + # each CPU type. + echo "hybrid test" + + # Count the number of core PMUs, assume minimum of 1 + pmus=$(ls /sys/bus/event_source/devices/*/cpus 2>/dev/null | wc -l) + if [ "$pmus" -lt 1 ] + then + pmus=1 + fi + + # Run default Perf stat + cycles_events=$(perf stat -- true 2>&1 | grep -E "/cycles/| cycles " | wc -l) + + if [ "$pmus" -ne "$cycles_events" ] + then + echo "hybrid test [Found $pmus PMUs but $cycles_events cycles events. Failed]" + err=1 + return + fi + echo "hybrid test [Success]" +} + test_default_stat test_stat_record_report test_stat_record_script @@ -155,4 +179,5 @@ test_stat_repeat_weak_groups test_topdown_groups test_topdown_weak_groups test_cputype +test_hybrid exit $err -- cgit v1.2.3 From 6490dda55dcabbd5cf408387f932c9343a22c872 Mon Sep 17 00:00:00 2001 From: Akihiko Odaki Date: Sun, 15 Sep 2024 10:34:29 +0900 Subject: libperf: Explicitly specify install-html dependencies install_doc of tools/lib/perf/Makefile invokes install-man, install-html, and install-examples of tools/lib/perf/Documentation/Makefile at once. This invocation succeeds when make runs in serial but can fail when make runs in parallel because while install-man of tools/lib/perf/Documentation/Makefile depends on all, install-html depends on nothing and can run ahead of all. Explicitly specify the dependencies of install-html to ensure that they are resolved before install-html. Signed-off-by: Akihiko Odaki Link: https://lore.kernel.org/r/20240915-perf-v1-1-cbfd9cd1d482@daynix.com Signed-off-by: Namhyung Kim --- tools/lib/perf/Documentation/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lib/perf/Documentation/Makefile b/tools/lib/perf/Documentation/Makefile index 972754082a85..573ca5b27556 100644 --- a/tools/lib/perf/Documentation/Makefile +++ b/tools/lib/perf/Documentation/Makefile @@ -121,7 +121,7 @@ install-man: all $(INSTALL) -d -m 755 $(DESTDIR)$(man7dir); \ $(INSTALL) -m 644 $(MAN_7) $(DESTDIR)$(man7dir); -install-html: +install-html: $(MAN_HTML) $(call QUIET_INSTALL, html) \ $(INSTALL) -d -m 755 $(DESTDIR)$(htmldir); \ $(INSTALL) -m 644 $(MAN_HTML) $(DESTDIR)$(htmldir); \ -- cgit v1.2.3 From 6adeb277fea06eeed3e9658a2e72573ac70fd011 Mon Sep 17 00:00:00 2001 From: Madadi Vineeth Reddy Date: Tue, 17 Sep 2024 14:31:00 +0530 Subject: perf sched replay: Remove unused parts of the code The sleep_sem semaphore and the specific_wait field (member of sched_atom) are initialized but not used anywhere in the code, so this patch removes them. The SCHED_EVENT_MIGRATION case in perf_sched__process_event() is currently not used and is also removed. Additionally, prev_state in add_sched_event_sleep() is marked with __maybe_unused and is not utilized anywhere in the function. This patch removes the parameter. If the task_state parameter was intended for future use, it can be reintroduced when needed. No functionality change intended. Signed-off-by: Madadi Vineeth Reddy Cc: Athira Rajeev Link: https://lore.kernel.org/r/20240917090100.42783-1-vineethr@linux.ibm.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-sched.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 5981cc51abc8..fdf979aaf275 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -68,7 +68,6 @@ struct task_desc { struct sched_atom **atoms; pthread_t thread; - sem_t sleep_sem; sem_t ready_for_work; sem_t work_done_sem; @@ -80,12 +79,10 @@ enum sched_event_type { SCHED_EVENT_RUN, SCHED_EVENT_SLEEP, SCHED_EVENT_WAKEUP, - SCHED_EVENT_MIGRATION, }; struct sched_atom { enum sched_event_type type; - int specific_wait; u64 timestamp; u64 duration; unsigned long nr; @@ -421,14 +418,13 @@ static void add_sched_event_wakeup(struct perf_sched *sched, struct task_desc *t wakee_event->wait_sem = zalloc(sizeof(*wakee_event->wait_sem)); sem_init(wakee_event->wait_sem, 0, 0); - wakee_event->specific_wait = 1; event->wait_sem = wakee_event->wait_sem; sched->nr_wakeup_events++; } static void add_sched_event_sleep(struct perf_sched *sched, struct task_desc *task, - u64 timestamp, const char task_state __maybe_unused) + u64 timestamp) { struct sched_atom *event = get_new_event(task, timestamp); @@ -468,7 +464,7 @@ static struct task_desc *register_pid(struct perf_sched *sched, * every task starts in sleeping state - this gets ignored * if there's no wakeup pointing to this sleep state: */ - add_sched_event_sleep(sched, task, 0, 0); + add_sched_event_sleep(sched, task, 0); sched->pid_to_task[pid] = task; sched->nr_tasks++; @@ -529,8 +525,6 @@ static void perf_sched__process_event(struct perf_sched *sched, ret = sem_post(atom->wait_sem); BUG_ON(ret); break; - case SCHED_EVENT_MIGRATION: - break; default: BUG_ON(1); } @@ -673,7 +667,6 @@ static void create_tasks(struct perf_sched *sched) parms->task = task = sched->tasks[i]; parms->sched = sched; parms->fd = self_open_counters(sched, i); - sem_init(&task->sleep_sem, 0, 0); sem_init(&task->ready_for_work, 0, 0); sem_init(&task->work_done_sem, 0, 0); task->curr_event = 0; @@ -697,7 +690,6 @@ static void destroy_tasks(struct perf_sched *sched) task = sched->tasks[i]; err = pthread_join(task->thread, NULL); BUG_ON(err); - sem_destroy(&task->sleep_sem); sem_destroy(&task->ready_for_work); sem_destroy(&task->work_done_sem); } @@ -751,7 +743,6 @@ static void wait_for_tasks(struct perf_sched *sched) for (i = 0; i < sched->nr_tasks; i++) { task = sched->tasks[i]; - sem_init(&task->sleep_sem, 0, 0); task->curr_event = 0; } } @@ -852,7 +843,6 @@ static int replay_switch_event(struct perf_sched *sched, *next_comm = evsel__strval(evsel, sample, "next_comm"); const u32 prev_pid = evsel__intval(evsel, sample, "prev_pid"), next_pid = evsel__intval(evsel, sample, "next_pid"); - const char prev_state = evsel__taskstate(evsel, sample, "prev_state"); struct task_desc *prev, __maybe_unused *next; u64 timestamp0, timestamp = sample->time; int cpu = sample->cpu; @@ -884,7 +874,7 @@ static int replay_switch_event(struct perf_sched *sched, sched->cpu_last_switched[cpu] = timestamp; add_sched_event_run(sched, prev, timestamp, delta); - add_sched_event_sleep(sched, prev, timestamp, prev_state); + add_sched_event_sleep(sched, prev, timestamp); return 0; } -- cgit v1.2.3 From 4f23fc34cc68812c68c3a3dec15e26e87565f430 Mon Sep 17 00:00:00 2001 From: Thomas Falcon Date: Thu, 26 Sep 2024 09:40:40 -0500 Subject: perf mem: Fix printing PERF_MEM_LVLNUM_{L2_MHB|MSC} With commit 8ec9497d3ef34 ("tools/include: Sync uapi/linux/perf.h with the kernel sources"), 'perf mem report' gives an incorrect memory access string. ... 0.02% 1 3644 L5 hit [.] 0x0000000000009b0e mlc [.] 0x00007fce43f59480 ... This occurs because, if no entry exists in mem_lvlnum, perf_mem__lvl_scnprintf will default to 'L%d, lvl', which in this case for PERF_MEM_LVLNUM_L2_MHB is 0x05. Add entries for PERF_MEM_LVLNUM_L2_MHB and PERF_MEM_LVLNUM_MSC to mem_lvlnum, so that the correct strings are printed. ... 0.02% 1 3644 L2 MHB hit [.] 0x0000000000009b0e mlc [.] 0x00007fce43f59480 ... Fixes: 8ec9497d3ef34 ("tools/include: Sync uapi/linux/perf.h with the kernel sources") Suggested-by: Kan Liang Signed-off-by: Thomas Falcon Reviewed-by: Leo Yan Link: https://lore.kernel.org/r/20240926144040.77897-1-thomas.falcon@intel.com Signed-off-by: Namhyung Kim --- tools/perf/util/mem-events.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c index 051feb93ed8d..bf5090f5220b 100644 --- a/tools/perf/util/mem-events.c +++ b/tools/perf/util/mem-events.c @@ -366,6 +366,12 @@ static const char * const mem_lvl[] = { }; static const char * const mem_lvlnum[] = { + [PERF_MEM_LVLNUM_L1] = "L1", + [PERF_MEM_LVLNUM_L2] = "L2", + [PERF_MEM_LVLNUM_L3] = "L3", + [PERF_MEM_LVLNUM_L4] = "L4", + [PERF_MEM_LVLNUM_L2_MHB] = "L2 MHB", + [PERF_MEM_LVLNUM_MSC] = "Memory-side Cache", [PERF_MEM_LVLNUM_UNC] = "Uncached", [PERF_MEM_LVLNUM_CXL] = "CXL", [PERF_MEM_LVLNUM_IO] = "I/O", @@ -448,7 +454,7 @@ int perf_mem__lvl_scnprintf(char *out, size_t sz, const struct mem_info *mem_inf if (mem_lvlnum[lvl]) l += scnprintf(out + l, sz - l, mem_lvlnum[lvl]); else - l += scnprintf(out + l, sz - l, "L%d", lvl); + l += scnprintf(out + l, sz - l, "Unknown level %d", lvl); l += scnprintf(out + l, sz - l, " %s", hit_miss); return l; -- cgit v1.2.3 From b38c49d8296b9eee1ffb6471853d542fd76de2fb Mon Sep 17 00:00:00 2001 From: Thomas Richter Date: Tue, 17 Sep 2024 10:57:06 +0200 Subject: perf/test: Speed up test case perf annotate basic tests perf test 70 takes a long time. One culprit is the output of command perf annotate. Per default enabled are - demangle symbol names - interleave source code with assembly code. Disable demangle of symbols and abort the annotation after the first 250 lines. This speeds up the test case considerable, for example on s390: Output before: # time perf test 70 70: perf annotate basic tests : Ok ..... real 2m7.467s user 1m26.869s sys 0m34.086s # Output after: # time perf test 70 70: perf annotate basic tests : Ok real 0m3.341s user 0m1.606s sys 0m0.362s # Signed-off-by: Thomas Richter Reviewed-by: James Clark Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Alexander Gordeev Cc: sumanthk@linux.ibm.com Link: https://lore.kernel.org/r/20240917085706.249691-1-tmricht@linux.ibm.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/annotate.sh | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/annotate.sh b/tools/perf/tests/shell/annotate.sh index 2ccf4f1d46b6..1590a37363de 100755 --- a/tools/perf/tests/shell/annotate.sh +++ b/tools/perf/tests/shell/annotate.sh @@ -44,7 +44,7 @@ test_basic() { fi # Generate the annotated output file - perf annotate -i "${perfdata}" --stdio 2> /dev/null > "${perfout}" + perf annotate --no-demangle -i "${perfdata}" --stdio 2> /dev/null | head -250 > "${perfout}" # check if it has the target symbol if ! grep "${testsym}" "${perfout}" @@ -63,8 +63,8 @@ test_basic() { fi # check again with a target symbol name - if ! perf annotate -i "${perfdata}" "${testsym}" 2> /dev/null | \ - grep -m 3 "${disasm_regex}" + if ! perf annotate --no-demangle -i "${perfdata}" "${testsym}" 2> /dev/null | \ + head -250 | grep -m 3 "${disasm_regex}" then echo "Basic annotate [Failed: missing disasm output when specifying the target symbol]" err=1 @@ -72,8 +72,8 @@ test_basic() { fi # check one more with external objdump tool (forced by --objdump option) - if ! perf annotate -i "${perfdata}" --objdump=objdump 2> /dev/null | \ - grep -m 3 "${disasm_regex}" + if ! perf annotate --no-demangle -i "${perfdata}" --objdump=objdump 2> /dev/null | \ + head -250 | grep -m 3 "${disasm_regex}" then echo "Basic annotate [Failed: missing disasm output from non default disassembler (using --objdump)]" err=1 -- cgit v1.2.3 From ee113a9e3c92627aa5bd83698fd90475baea78ac Mon Sep 17 00:00:00 2001 From: zhang jiao Date: Wed, 4 Sep 2024 16:05:33 +0800 Subject: iio: event_monitor: Fix missing free in main Free string allocated by asprintf(). Signed-off-by: zhang jiao Link: https://patch.msgid.link/20240904080533.104279-1-zhangjiao2@cmss.chinamobile.com Signed-off-by: Jonathan Cameron --- tools/iio/iio_event_monitor.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c index 8073c9e4fe46..d0b8e484826d 100644 --- a/tools/iio/iio_event_monitor.c +++ b/tools/iio/iio_event_monitor.c @@ -449,6 +449,7 @@ error_free_chrdev_name: enable_events(dev_dir_name, 0); free(chrdev_name); + free(dev_dir_name); return ret; } -- cgit v1.2.3 From 7043a9f77c2ad8e937850fce6f95ab66592d624a Mon Sep 17 00:00:00 2001 From: Tor Vic Date: Tue, 24 Sep 2024 16:17:47 +0200 Subject: tools/power/cpupower: Add documentation for some recently introduced options The 'cpupower-set' tool has been enhanced with new features: commit f2ab5557119a ("cpupower: Add EPP value change support") commit df8776b03689 ("cpupower: Add support for amd_pstate mode change") commit eb426fc6bdd6 ("cpupower: Add turbo-boost support in cpupower") However, the corresponding manpage was never updated. Add a basic description of these new options to the existing manpage. Commit description updated to fix checkpatch errors: Shuah Khan Signed-off-by: Tor Vic Signed-off-by: Shuah Khan --- tools/power/cpupower/man/cpupower-set.1 | 38 +++++++++++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/power/cpupower/man/cpupower-set.1 b/tools/power/cpupower/man/cpupower-set.1 index 2bcc696f4496..500653ef98c7 100644 --- a/tools/power/cpupower/man/cpupower-set.1 +++ b/tools/power/cpupower/man/cpupower-set.1 @@ -3,7 +3,7 @@ cpupower\-set \- Set processor power related kernel or hardware configurations .SH SYNOPSIS .ft B -.B cpupower set [ \-b VAL ] +.B cpupower set [ \-b VAL | \-e POLICY | \-m MODE | \-t BOOL ] .SH DESCRIPTION @@ -19,7 +19,7 @@ described in the Options sections. Use \fBcpupower info \fP to read out current settings and whether they are supported on the system at all. -.SH Options +.SH OPTIONS .PP \-\-perf-bias, \-b .RS 4 @@ -56,6 +56,40 @@ Use \fBcpupower -c all info -b\fP to verify. This options needs the msr kernel driver (CONFIG_X86_MSR) loaded. .RE +.PP +\-\-epp, \-e +.RS 4 +Sets the energy performance policy preference on supported Intel or AMD +processors which use the Intel or AMD P-State cpufreq driver respectively. + +Available policies can be found with +\fBcat /sys/devices/system/cpu/cpufreq/policy0/energy_performance_available_preferences\fP : +.RS 4 +default performance balance_performance balance_power power +.RE + +.RE + +.PP +\-\-amd\-pstate\-mode, \-m +.RS 4 +Sets the AMD P-State mode for supported AMD processors. +Available modes are "active", "guided" or "passive". + +Refer to the AMD P-State kernel documentation for further information. + +.RE + +.PP +\-\-turbo\-boost, \-t +.RS 4 +This option is used to enable or disable the turbo boost feature on +supported Intel and AMD processors. + +This option takes as parameter either \fB1\fP to enable, or \fB0\fP to disable the feature. + +.RE + .SH "SEE ALSO" cpupower-info(1), cpupower-monitor(1), powertop(1) .PP -- cgit v1.2.3 From c0dd6507ab20066f39993065a73d2687b97a848d Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 19 Sep 2024 20:08:11 +0800 Subject: pm: cpupower: bench: print config file path when open cpufreq-bench.conf fails Print out the config file path when fopen failed. It will be easy for users to know where to create the file. Since we are here, use strerror to drop the usage of perror. Signed-off-by: Peng Fan Signed-off-by: Shuah Khan --- tools/power/cpupower/bench/parse.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/power/cpupower/bench/parse.c b/tools/power/cpupower/bench/parse.c index e63dc11fa3a5..080678d9d74e 100644 --- a/tools/power/cpupower/bench/parse.c +++ b/tools/power/cpupower/bench/parse.c @@ -4,6 +4,7 @@ * Copyright (C) 2008 Christian Kornacker */ +#include #include #include #include @@ -165,8 +166,8 @@ int prepare_config(const char *path, struct config *config) configfile = fopen(path, "r"); if (configfile == NULL) { - perror("fopen"); - fprintf(stderr, "error: unable to read configfile\n"); + fprintf(stderr, "error: unable to read configfile: %s, %s\n", + path, strerror(errno)); free(config); return 1; } -- cgit v1.2.3 From f79473ed922023942407da25cb00843ac28b981c Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 19 Sep 2024 20:08:12 +0800 Subject: pm: cpupower: Makefile: Allow overriding cross-compiling env params Allow overriding the cross-comple env parameters to make it easier for Yocto users. Then cross-compiler toolchains to build cpupower with only two steps: - source (toolchain path)/environment-setup-armv8a-poky-linux - make Signed-off-by: Peng Fan Signed-off-by: Shuah Khan --- tools/power/cpupower/Makefile | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile index 6c02f401069e..e2a48af6fa2a 100644 --- a/tools/power/cpupower/Makefile +++ b/tools/power/cpupower/Makefile @@ -86,12 +86,12 @@ INSTALL_SCRIPT = ${INSTALL} -m 644 # If you are running a cross compiler, you may want to set this # to something more interesting, like "arm-linux-". If you want # to compile vs uClibc, that can be done here as well. -CROSS = #/usr/i386-linux-uclibc/usr/bin/i386-uclibc- -CC = $(CROSS)gcc -LD = $(CROSS)gcc -AR = $(CROSS)ar -STRIP = $(CROSS)strip -RANLIB = $(CROSS)ranlib +CROSS ?= #/usr/i386-linux-uclibc/usr/bin/i386-uclibc- +CC ?= $(CROSS)gcc +LD ?= $(CROSS)gcc +AR ?= $(CROSS)ar +STRIP ?= $(CROSS)strip +RANLIB ?= $(CROSS)ranlib HOSTCC = gcc MKDIR = mkdir -- cgit v1.2.3 From 08a26a15a4cdf5f2ca801dd0fbd6806233fbd6b6 Mon Sep 17 00:00:00 2001 From: "John B. Wyatt IV" Date: Mon, 30 Sep 2024 13:22:55 -0400 Subject: pm: cpupower: gitignore: Add compile_commands.json A compile_commands.json file is used by the LSP in tools like VSCode and Neovim to look up function and type information. The file is specific to the state of the current system; add it to the gitignore. Note: the kernel root's gitignore has a similar entry: /compile_commands.json I am not sure why they use '/' for a file as it is used for directories. Signed-off-by: "John B. Wyatt IV" Signed-off-by: "John B. Wyatt IV" Signed-off-by: Shuah Khan --- tools/power/cpupower/.gitignore | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools') diff --git a/tools/power/cpupower/.gitignore b/tools/power/cpupower/.gitignore index 7677329c42a6..5113d5a7aee0 100644 --- a/tools/power/cpupower/.gitignore +++ b/tools/power/cpupower/.gitignore @@ -27,3 +27,6 @@ debug/i386/intel_gsic debug/i386/powernow-k8-decode debug/x86_64/centrino-decode debug/x86_64/powernow-k8-decode + +# Clang's compilation database file +compile_commands.json -- cgit v1.2.3 From 9865f0a209fe78c7d924e10261c08fa7774e3e55 Mon Sep 17 00:00:00 2001 From: Jiapeng Chong Date: Sun, 29 Sep 2024 17:30:45 +0800 Subject: perf test: Use ARRAY_SIZE for array length Use of macro ARRAY_SIZE to calculate array size minimizes the redundant code and improves code reusability. ./tools/perf/tests/demangle-java-test.c:31:34-35: WARNING: Use ARRAY_SIZE. Reported-by: Abaci Robot Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=11173 Signed-off-by: Jiapeng Chong Link: https://lore.kernel.org/r/20240929093045.10136-1-jiapeng.chong@linux.alibaba.com Signed-off-by: Namhyung Kim --- tools/perf/tests/demangle-java-test.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/demangle-java-test.c b/tools/perf/tests/demangle-java-test.c index 44d1be303b67..93c94408bdc8 100644 --- a/tools/perf/tests/demangle-java-test.c +++ b/tools/perf/tests/demangle-java-test.c @@ -2,6 +2,7 @@ #include #include #include +#include #include "tests.h" #include "session.h" #include "debug.h" @@ -28,7 +29,7 @@ static int test__demangle_java(struct test_suite *test __maybe_unused, int subte "void java.lang.Object()" }, }; - for (i = 0; i < sizeof(test_cases) / sizeof(test_cases[0]); i++) { + for (i = 0; i < ARRAY_SIZE(test_cases); i++) { buf = java_demangle_sym(test_cases[i].mangled, 0); if (strcmp(buf, test_cases[i].demangled)) { pr_debug("FAILED: %s: %s != %s\n", test_cases[i].mangled, -- cgit v1.2.3 From f0cb9fa7a567d613eb23dd486ca89f8820f778bf Mon Sep 17 00:00:00 2001 From: Yicong Yang Date: Thu, 12 Sep 2024 14:39:03 +0800 Subject: perf vender events arm64: Use "Topdown" as topdown metric group name HiSilicon HIP08 does support Topdown metrics but perf tool complains when trying to count Topdown metrics: [root@localhost tracing]# perf stat --topdown Topdown requested but the topdown metric groups aren't present. (See perf list the metric groups have names like TopdownL1) It's because tool's using "Topdown" as the metric group name[1] rather than "TopDown", so follow the convention. This is introduced by [2] which allows to use json metrics to support --topdown function. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/perf/builtin-stat.c?h=v6.11-rc1#n1994 [2] commit 1647cd5b8802 ("perf stat: Implement --topdown using json metrics") Signed-off-by: Yicong Yang Reviewed-by: Jonathan Cameron Reviewed-by: James Clark Cc: prime.zeng@hisilicon.com Cc: hejunhao3@huawei.com Cc: linuxarm@huawei.com Cc: shameerali.kolothum.thodi@huawei.com Link: https://lore.kernel.org/r/20240912063903.31460-1-yangyicong@huawei.com Signed-off-by: Namhyung Kim --- .../arch/arm64/hisilicon/hip08/metrics.json | 74 +++++++++++----------- 1 file changed, 37 insertions(+), 37 deletions(-) (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/arm64/hisilicon/hip08/metrics.json b/tools/perf/pmu-events/arch/arm64/hisilicon/hip08/metrics.json index 6463531b9941..b6a0d2de8534 100644 --- a/tools/perf/pmu-events/arch/arm64/hisilicon/hip08/metrics.json +++ b/tools/perf/pmu-events/arch/arm64/hisilicon/hip08/metrics.json @@ -3,235 +3,235 @@ "MetricExpr": "FETCH_BUBBLE / (4 * CPU_CYCLES)", "PublicDescription": "Frontend bound L1 topdown metric", "BriefDescription": "Frontend bound L1 topdown metric", - "DefaultMetricgroupName": "TopDownL1", - "MetricGroup": "Default;TopDownL1", + "DefaultMetricgroupName": "TopdownL1", + "MetricGroup": "Default;TopdownL1", "MetricName": "frontend_bound" }, { "MetricExpr": "(INST_SPEC - INST_RETIRED) / (4 * CPU_CYCLES)", "PublicDescription": "Bad Speculation L1 topdown metric", "BriefDescription": "Bad Speculation L1 topdown metric", - "DefaultMetricgroupName": "TopDownL1", - "MetricGroup": "Default;TopDownL1", + "DefaultMetricgroupName": "TopdownL1", + "MetricGroup": "Default;TopdownL1", "MetricName": "bad_speculation" }, { "MetricExpr": "INST_RETIRED / (CPU_CYCLES * 4)", "PublicDescription": "Retiring L1 topdown metric", "BriefDescription": "Retiring L1 topdown metric", - "DefaultMetricgroupName": "TopDownL1", - "MetricGroup": "Default;TopDownL1", + "DefaultMetricgroupName": "TopdownL1", + "MetricGroup": "Default;TopdownL1", "MetricName": "retiring" }, { "MetricExpr": "1 - (frontend_bound + bad_speculation + retiring)", "PublicDescription": "Backend Bound L1 topdown metric", "BriefDescription": "Backend Bound L1 topdown metric", - "DefaultMetricgroupName": "TopDownL1", - "MetricGroup": "Default;TopDownL1", + "DefaultMetricgroupName": "TopdownL1", + "MetricGroup": "Default;TopdownL1", "MetricName": "backend_bound" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x201d@ / CPU_CYCLES", "PublicDescription": "Fetch latency bound L2 topdown metric", "BriefDescription": "Fetch latency bound L2 topdown metric", - "MetricGroup": "TopDownL2", + "MetricGroup": "TopdownL2", "MetricName": "fetch_latency_bound" }, { "MetricExpr": "frontend_bound - fetch_latency_bound", "PublicDescription": "Fetch bandwidth bound L2 topdown metric", "BriefDescription": "Fetch bandwidth bound L2 topdown metric", - "MetricGroup": "TopDownL2", + "MetricGroup": "TopdownL2", "MetricName": "fetch_bandwidth_bound" }, { "MetricExpr": "(bad_speculation * BR_MIS_PRED) / (BR_MIS_PRED + armv8_pmuv3_0@event\\=0x2013@)", "PublicDescription": "Branch mispredicts L2 topdown metric", "BriefDescription": "Branch mispredicts L2 topdown metric", - "MetricGroup": "TopDownL2", + "MetricGroup": "TopdownL2", "MetricName": "branch_mispredicts" }, { "MetricExpr": "bad_speculation - branch_mispredicts", "PublicDescription": "Machine clears L2 topdown metric", "BriefDescription": "Machine clears L2 topdown metric", - "MetricGroup": "TopDownL2", + "MetricGroup": "TopdownL2", "MetricName": "machine_clears" }, { "MetricExpr": "(EXE_STALL_CYCLE - (MEM_STALL_ANYLOAD + armv8_pmuv3_0@event\\=0x7005@)) / CPU_CYCLES", "PublicDescription": "Core bound L2 topdown metric", "BriefDescription": "Core bound L2 topdown metric", - "MetricGroup": "TopDownL2", + "MetricGroup": "TopdownL2", "MetricName": "core_bound" }, { "MetricExpr": "(MEM_STALL_ANYLOAD + armv8_pmuv3_0@event\\=0x7005@) / CPU_CYCLES", "PublicDescription": "Memory bound L2 topdown metric", "BriefDescription": "Memory bound L2 topdown metric", - "MetricGroup": "TopDownL2", + "MetricGroup": "TopdownL2", "MetricName": "memory_bound" }, { "MetricExpr": "(((L2I_TLB - L2I_TLB_REFILL) * 15) + (L2I_TLB_REFILL * 100)) / CPU_CYCLES", "PublicDescription": "Idle by itlb miss L3 topdown metric", "BriefDescription": "Idle by itlb miss L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "idle_by_itlb_miss" }, { "MetricExpr": "(((L2I_CACHE - L2I_CACHE_REFILL) * 15) + (L2I_CACHE_REFILL * 100)) / CPU_CYCLES", "PublicDescription": "Idle by icache miss L3 topdown metric", "BriefDescription": "Idle by icache miss L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "idle_by_icache_miss" }, { "MetricExpr": "(BR_MIS_PRED * 5) / CPU_CYCLES", "PublicDescription": "BP misp flush L3 topdown metric", "BriefDescription": "BP misp flush L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "bp_misp_flush" }, { "MetricExpr": "(armv8_pmuv3_0@event\\=0x2013@ * 5) / CPU_CYCLES", "PublicDescription": "OOO flush L3 topdown metric", "BriefDescription": "OOO flush L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "ooo_flush" }, { "MetricExpr": "(armv8_pmuv3_0@event\\=0x1001@ * 5) / CPU_CYCLES", "PublicDescription": "Static predictor flush L3 topdown metric", "BriefDescription": "Static predictor flush L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "sp_flush" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x1010@ / BR_MIS_PRED", "PublicDescription": "Indirect branch L3 topdown metric", "BriefDescription": "Indirect branch L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "indirect_branch" }, { "MetricExpr": "(armv8_pmuv3_0@event\\=0x1013@ + armv8_pmuv3_0@event\\=0x1016@) / BR_MIS_PRED", "PublicDescription": "Push branch L3 topdown metric", "BriefDescription": "Push branch L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "push_branch" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x100d@ / BR_MIS_PRED", "PublicDescription": "Pop branch L3 topdown metric", "BriefDescription": "Pop branch L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "pop_branch" }, { "MetricExpr": "(BR_MIS_PRED - armv8_pmuv3_0@event\\=0x1010@ - armv8_pmuv3_0@event\\=0x1013@ - armv8_pmuv3_0@event\\=0x1016@ - armv8_pmuv3_0@event\\=0x100d@) / BR_MIS_PRED", "PublicDescription": "Other branch L3 topdown metric", "BriefDescription": "Other branch L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "other_branch" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x2012@ / armv8_pmuv3_0@event\\=0x2013@", "PublicDescription": "Nuke flush L3 topdown metric", "BriefDescription": "Nuke flush L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "nuke_flush" }, { "MetricExpr": "1 - nuke_flush", "PublicDescription": "Other flush L3 topdown metric", "BriefDescription": "Other flush L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "other_flush" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x2010@ / CPU_CYCLES", "PublicDescription": "Sync stall L3 topdown metric", "BriefDescription": "Sync stall L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "sync_stall" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x2004@ / CPU_CYCLES", "PublicDescription": "Rob stall L3 topdown metric", "BriefDescription": "Rob stall L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "rob_stall" }, { "MetricExpr": "(armv8_pmuv3_0@event\\=0x2006@ + armv8_pmuv3_0@event\\=0x2007@ + armv8_pmuv3_0@event\\=0x2008@) / CPU_CYCLES", "PublicDescription": "Ptag stall L3 topdown metric", "BriefDescription": "Ptag stall L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "ptag_stall" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x201e@ / CPU_CYCLES", "PublicDescription": "SaveOpQ stall L3 topdown metric", "BriefDescription": "SaveOpQ stall L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "saveopq_stall" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x2005@ / CPU_CYCLES", "PublicDescription": "PC buffer stall L3 topdown metric", "BriefDescription": "PC buffer stall L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "pc_buffer_stall" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x7002@ / CPU_CYCLES", "PublicDescription": "Divider L3 topdown metric", "BriefDescription": "Divider L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "divider" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x7003@ / CPU_CYCLES", "PublicDescription": "FSU stall L3 topdown metric", "BriefDescription": "FSU stall L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "fsu_stall" }, { "MetricExpr": "core_bound - divider - fsu_stall", "PublicDescription": "EXE ports util L3 topdown metric", "BriefDescription": "EXE ports util L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "exe_ports_util" }, { "MetricExpr": "(MEM_STALL_ANYLOAD - MEM_STALL_L1MISS) / CPU_CYCLES", "PublicDescription": "L1 bound L3 topdown metric", "BriefDescription": "L1 bound L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "l1_bound" }, { "MetricExpr": "(MEM_STALL_L1MISS - MEM_STALL_L2MISS) / CPU_CYCLES", "PublicDescription": "L2 bound L3 topdown metric", "BriefDescription": "L2 bound L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "l2_bound" }, { "MetricExpr": "MEM_STALL_L2MISS / CPU_CYCLES", "PublicDescription": "Mem bound L3 topdown metric", "BriefDescription": "Mem bound L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "mem_bound" }, { "MetricExpr": "armv8_pmuv3_0@event\\=0x7005@ / CPU_CYCLES", "PublicDescription": "Store bound L3 topdown metric", "BriefDescription": "Store bound L3 topdown metric", - "MetricGroup": "TopDownL3", + "MetricGroup": "TopdownL3", "MetricName": "store_bound" } ] -- cgit v1.2.3 From 4d1b305dc8d74114abd544b0c11397ceb9ded528 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 19 Sep 2024 00:31:16 +0200 Subject: perf evsel: Reduce a variables scope In __evsel__config_callchain avoid computing arch until code path that uses it. Signed-off-by: Ian Rogers Cc: Dominique Martinet Cc: Ze Gao Cc: Yang Jihong Cc: Weilin Wang Link: https://lore.kernel.org/r/20240918223116.127386-1-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/evsel.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index edfb376f0611..da0bada62140 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -859,7 +859,6 @@ static void __evsel__config_callchain(struct evsel *evsel, struct record_opts *o { bool function = evsel__is_function_event(evsel); struct perf_event_attr *attr = &evsel->core.attr; - const char *arch = perf_env__arch(evsel__env(evsel)); evsel__set_sample_bit(evsel, CALLCHAIN); @@ -890,6 +889,8 @@ static void __evsel__config_callchain(struct evsel *evsel, struct record_opts *o if (param->record_mode == CALLCHAIN_DWARF) { if (!function) { + const char *arch = perf_env__arch(evsel__env(evsel)); + evsel__set_sample_bit(evsel, REGS_USER); evsel__set_sample_bit(evsel, STACK_USER); if (opts->sample_user_regs && -- cgit v1.2.3 From 39820ced2aa1fb2453294909651dfc7dd6e6e028 Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Fri, 13 Sep 2024 08:47:07 +0000 Subject: perf x86/topdown: Complete topdown slots/metrics events check It's not complete to check whether an event is a topdown slots or topdown metrics event by only comparing the event name since user may assign the event by RAW format, e.g. perf stat -e '{instructions,cpu/r400/,cpu/r8300/}' sleep 1 Performance counter stats for 'sleep 1': instructions cpu/r400/ cpu/r8300/ 1.002917796 seconds time elapsed 0.002955000 seconds user 0.000000000 seconds sys The RAW format slots and topdown-be-bound events are not recognized and not regroup the events, and eventually cause error. Thus add two helpers arch_is_topdown_slots()/arch_is_topdown_metrics() to detect whether an event is topdown slots/metrics event by comparing the event config directly, and use these two helpers to replace the original event name comparisons. Reviewed-by: Kan Liang Signed-off-by: Dapeng Mi Cc: Yongwei Ma Link: https://lore.kernel.org/r/20240913084712.13861-2-dapeng1.mi@linux.intel.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/evlist.c | 8 +++---- tools/perf/arch/x86/util/evsel.c | 3 ++- tools/perf/arch/x86/util/topdown.c | 48 +++++++++++++++++++++++++++++++++++++- tools/perf/arch/x86/util/topdown.h | 2 ++ 4 files changed, 55 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/evlist.c b/tools/perf/arch/x86/util/evlist.c index 3a4bf13b1759..044bc59482c8 100644 --- a/tools/perf/arch/x86/util/evlist.c +++ b/tools/perf/arch/x86/util/evlist.c @@ -10,14 +10,14 @@ int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) if (topdown_sys_has_perf_metrics() && (arch_evsel__must_be_in_group(lhs) || arch_evsel__must_be_in_group(rhs))) { /* Ensure the topdown slots comes first. */ - if (strcasestr(lhs->name, "slots") && !strcasestr(lhs->name, "uops_retired.slots")) + if (arch_is_topdown_slots(lhs)) return -1; - if (strcasestr(rhs->name, "slots") && !strcasestr(rhs->name, "uops_retired.slots")) + if (arch_is_topdown_slots(rhs)) return 1; /* Followed by topdown events. */ - if (strcasestr(lhs->name, "topdown") && !strcasestr(rhs->name, "topdown")) + if (arch_is_topdown_metrics(lhs) && !arch_is_topdown_metrics(rhs)) return -1; - if (!strcasestr(lhs->name, "topdown") && strcasestr(rhs->name, "topdown")) + if (!arch_is_topdown_metrics(lhs) && arch_is_topdown_metrics(rhs)) return 1; } diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c index cf7c116eeb8e..3dd29ba2c23b 100644 --- a/tools/perf/arch/x86/util/evsel.c +++ b/tools/perf/arch/x86/util/evsel.c @@ -6,6 +6,7 @@ #include "util/pmu.h" #include "util/pmus.h" #include "linux/string.h" +#include "topdown.h" #include "evsel.h" #include "util/debug.h" #include "env.h" @@ -65,7 +66,7 @@ bool arch_evsel__must_be_in_group(const struct evsel *evsel) strcasestr(evsel->name, "uops_retired.slots")) return false; - return strcasestr(evsel->name, "topdown") || strcasestr(evsel->name, "slots"); + return arch_is_topdown_metrics(evsel) || arch_is_topdown_slots(evsel); } int arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size) diff --git a/tools/perf/arch/x86/util/topdown.c b/tools/perf/arch/x86/util/topdown.c index 3f9a267d4501..49f25d67ed77 100644 --- a/tools/perf/arch/x86/util/topdown.c +++ b/tools/perf/arch/x86/util/topdown.c @@ -32,6 +32,52 @@ bool topdown_sys_has_perf_metrics(void) } #define TOPDOWN_SLOTS 0x0400 +bool arch_is_topdown_slots(const struct evsel *evsel) +{ + if (evsel->core.attr.config == TOPDOWN_SLOTS) + return true; + + return false; +} + +static int compare_topdown_event(void *vstate, struct pmu_event_info *info) +{ + int *config = vstate; + int event = 0; + int umask = 0; + char *str; + + if (!strcasestr(info->name, "topdown")) + return 0; + + str = strcasestr(info->str, "event="); + if (str) + sscanf(str, "event=%x", &event); + + str = strcasestr(info->str, "umask="); + if (str) + sscanf(str, "umask=%x", &umask); + + if (event == 0 && *config == (event | umask << 8)) + return 1; + + return 0; +} + +bool arch_is_topdown_metrics(const struct evsel *evsel) +{ + struct perf_pmu *pmu = evsel__find_pmu(evsel); + int config = evsel->core.attr.config; + + if (!pmu || !pmu->is_core) + return false; + + if (perf_pmu__for_each_event(pmu, false, &config, + compare_topdown_event)) + return true; + + return false; +} /* * Check whether a topdown group supports sample-read. @@ -44,7 +90,7 @@ bool arch_topdown_sample_read(struct evsel *leader) if (!evsel__sys_has_perf_metrics(leader)) return false; - if (leader->core.attr.config == TOPDOWN_SLOTS) + if (arch_is_topdown_slots(leader)) return true; return false; diff --git a/tools/perf/arch/x86/util/topdown.h b/tools/perf/arch/x86/util/topdown.h index 46bf9273e572..1bae9b1822d7 100644 --- a/tools/perf/arch/x86/util/topdown.h +++ b/tools/perf/arch/x86/util/topdown.h @@ -3,5 +3,7 @@ #define _TOPDOWN_H 1 bool topdown_sys_has_perf_metrics(void); +bool arch_is_topdown_slots(const struct evsel *evsel); +bool arch_is_topdown_metrics(const struct evsel *evsel); #endif -- cgit v1.2.3 From 1e53e9d1787babb1544eaec7c7fdcb78a4a20a13 Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Fri, 13 Sep 2024 08:47:08 +0000 Subject: perf x86/topdown: Correct leader selection with sample_read enabled Addresses an issue where, in the absence of a topdown metrics event within a sampling group, the slots event was incorrectly bypassed as the sampling leader when sample_read was enabled. perf record -e '{slots,branches}:S' -c 10000 -vv sleep 1 In this case, the slots event should be sampled as leader but the branches event is sampled in fact like the verbose output shows. perf_event_attr: type 4 (cpu) size 168 config 0x400 (slots) sample_type IP|TID|TIME|READ|CPU|IDENTIFIER read_format ID|GROUP|LOST disabled 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5 ------------------------------------------------------------ perf_event_attr: type 0 (PERF_TYPE_HARDWARE) size 168 config 0x4 (PERF_COUNT_HW_BRANCH_INSTRUCTIONS) { sample_period, sample_freq } 10000 sample_type IP|TID|TIME|READ|CPU|IDENTIFIER read_format ID|GROUP|LOST sample_id_all 1 exclude_guest 1 The sample period of slots event instead of branches event is reset to 0. This fix ensures the slots event remains the leader under these conditions. Reviewed-by: Kan Liang Signed-off-by: Dapeng Mi Cc: Yongwei Ma Link: https://lore.kernel.org/r/20240913084712.13861-3-dapeng1.mi@linux.intel.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/topdown.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/topdown.c b/tools/perf/arch/x86/util/topdown.c index 49f25d67ed77..cb2c64928bc4 100644 --- a/tools/perf/arch/x86/util/topdown.c +++ b/tools/perf/arch/x86/util/topdown.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 #include "api/fs/fs.h" #include "util/evsel.h" +#include "util/evlist.h" #include "util/pmu.h" #include "util/pmus.h" #include "util/topdown.h" @@ -87,11 +88,24 @@ bool arch_is_topdown_metrics(const struct evsel *evsel) */ bool arch_topdown_sample_read(struct evsel *leader) { + struct evsel *evsel; + if (!evsel__sys_has_perf_metrics(leader)) return false; - if (arch_is_topdown_slots(leader)) - return true; + if (!arch_is_topdown_slots(leader)) + return false; + + /* + * If slots event as leader event but no topdown metric events + * in group, slots event should still sample as leader. + */ + evlist__for_each_entry(leader->evlist, evsel) { + if (evsel->core.leader != leader->core.leader) + return false; + if (evsel != leader && arch_is_topdown_metrics(evsel)) + return true; + } return false; } -- cgit v1.2.3 From 3b5edc0421e2598a0ae7f0adcd592017f37e3cdf Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Fri, 13 Sep 2024 08:47:09 +0000 Subject: perf x86/topdown: Don't move topdown metric events in group when running below perf command, we say error is reported. perf record -e "{slots,instructions,topdown-retiring}:S" -vv -C0 sleep 1 ------------------------------------------------------------ perf_event_attr: type 4 (cpu) size 168 config 0x400 (slots) sample_type IP|TID|TIME|READ|CPU|PERIOD|IDENTIFIER read_format ID|GROUP|LOST disabled 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5 ------------------------------------------------------------ perf_event_attr: type 4 (cpu) size 168 config 0x8000 (topdown-retiring) { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|READ|CPU|PERIOD|IDENTIFIER read_format ID|GROUP|LOST freq 1 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd 5 flags 0x8 sys_perf_event_open failed, error -22 Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (topdown-retiring). The reason of error is that the events are regrouped and topdown-retiring event is moved to closely after the slots event and topdown-retiring event needs to do the sampling, but Intel PMU driver doesn't support to sample topdown metrics events. For topdown metrics events, it just requires to be in a group which has slots event as leader. It doesn't require topdown metrics event must be closely after slots event. Thus it's a overkill to move topdown metrics event closely after slots event in events regrouping and furtherly cause the above issue. Thus don't move topdown metrics events forward if they are already in a group. Reviewed-by: Kan Liang Signed-off-by: Dapeng Mi Cc: Yongwei Ma Link: https://lore.kernel.org/r/20240913084712.13861-4-dapeng1.mi@linux.intel.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/evlist.c | 62 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 61 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/evlist.c b/tools/perf/arch/x86/util/evlist.c index 044bc59482c8..438e4639fa89 100644 --- a/tools/perf/arch/x86/util/evlist.c +++ b/tools/perf/arch/x86/util/evlist.c @@ -7,6 +7,61 @@ int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) { + /* + * Currently the following topdown events sequence are supported to + * move and regroup correctly. + * + * a. all events in a group + * perf stat -e "{instructions,topdown-retiring,slots}" -C0 sleep 1 + * WARNING: events were regrouped to match PMUs + * Performance counter stats for 'CPU(s) 0': + * 15,066,240 slots + * 1,899,760 instructions + * 2,126,998 topdown-retiring + * b. all events not in a group + * perf stat -e "instructions,topdown-retiring,slots" -C0 sleep 1 + * WARNING: events were regrouped to match PMUs + * Performance counter stats for 'CPU(s) 0': + * 2,045,561 instructions + * 17,108,370 slots + * 2,281,116 topdown-retiring + * c. slots event in a group but topdown metrics events outside the group + * perf stat -e "{instructions,slots},topdown-retiring" -C0 sleep 1 + * WARNING: events were regrouped to match PMUs + * Performance counter stats for 'CPU(s) 0': + * 20,323,878 slots + * 2,634,884 instructions + * 3,028,656 topdown-retiring + * d. slots event and topdown metrics events in two groups + * perf stat -e "{instructions,slots},{topdown-retiring}" -C0 sleep 1 + * WARNING: events were regrouped to match PMUs + * Performance counter stats for 'CPU(s) 0': + * 26,319,024 slots + * 2,427,791 instructions + * 2,683,508 topdown-retiring + * + * If slots event and topdown metrics events are not in same group, the + * topdown metrics events must be first event after the slots event group, + * otherwise topdown metrics events can't be regrouped correctly, e.g. + * + * a. perf stat -e "{instructions,slots},cycles,topdown-retiring" -C0 sleep 1 + * WARNING: events were regrouped to match PMUs + * Performance counter stats for 'CPU(s) 0': + * 17,923,134 slots + * 2,154,855 instructions + * 3,015,058 cycles + * topdown-retiring + * + * if slots event and topdown metrics events are in two groups, the group which + * has topdown metrics events must contain only the topdown metrics event, + * otherwise topdown metrics event can't be regrouped correctly as well, e.g. + * + * a. perf stat -e "{instructions,slots},{topdown-retiring,cycles}" -C0 sleep 1 + * WARNING: events were regrouped to match PMUs + * Error: + * The sys_perf_event_open() syscall returned with 22 (Invalid argument) for + * event (topdown-retiring) + */ if (topdown_sys_has_perf_metrics() && (arch_evsel__must_be_in_group(lhs) || arch_evsel__must_be_in_group(rhs))) { /* Ensure the topdown slots comes first. */ @@ -17,7 +72,12 @@ int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) /* Followed by topdown events. */ if (arch_is_topdown_metrics(lhs) && !arch_is_topdown_metrics(rhs)) return -1; - if (!arch_is_topdown_metrics(lhs) && arch_is_topdown_metrics(rhs)) + /* + * Move topdown events forward only when topdown events + * are not in same group with previous event. + */ + if (!arch_is_topdown_metrics(lhs) && arch_is_topdown_metrics(rhs) && + lhs->core.leader != rhs->core.leader) return 1; } -- cgit v1.2.3 From 387892723ad4044ff139ad7433e4dd24f7cfe303 Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Fri, 13 Sep 2024 08:47:10 +0000 Subject: perf tests: Add leader sampling test in record tests Add leader sampling test to validate event counts are captured into record and the count value is consistent. Suggested-by: Kan Liang Reviewed-by: Kan Liang Signed-off-by: Dapeng Mi Cc: Yongwei Ma Link: https://lore.kernel.org/r/20240913084712.13861-5-dapeng1.mi@linux.intel.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/record.sh | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'tools') diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh index 048078ee2eca..45baf7910640 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -17,6 +17,7 @@ skip_test_missing_symbol ${testsym} err=0 perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) +script_output=$(mktemp /tmp/__perf_test.perf.data.XXXXX.script) testprog="perf test -w thloop" cpu_pmu_dir="/sys/bus/event_source/devices/cpu*" br_cntr_file="/caps/branch_counter_nr" @@ -228,6 +229,32 @@ test_cgroup() { echo "Cgroup sampling test [Success]" } +test_leader_sampling() { + echo "Basic leader sampling test" + if ! perf record -o "${perfdata}" -e "{branches,branches}:Su" perf test -w brstack 2> /dev/null + then + echo "Leader sampling [Failed record]" + err=1 + return + fi + index=0 + perf script -i "${perfdata}" > $script_output + while IFS= read -r line + do + # Check if the two branches counts are equal in each record + branches=$(echo $line | awk '{for(i=1;i<=NF;i++) if($i=="branches:") print $(i-1)}') + if [ $(($index%2)) -ne 0 ] && [ ${branches}x != ${prev_branches}x ] + then + echo "Leader sampling [Failed inconsistent branches count]" + err=1 + return + fi + index=$(($index+1)) + prev_branches=$branches + done < $script_output + echo "Basic leader sampling test [Success]" +} + # raise the limit of file descriptors to minimum if [[ $default_fd_limit -lt $min_fd_limit ]]; then ulimit -Sn $min_fd_limit @@ -239,6 +266,7 @@ test_system_wide test_workload test_branch_counter test_cgroup +test_leader_sampling # restore the default value ulimit -Sn $default_fd_limit -- cgit v1.2.3 From 0836aa60083a478cbc788f19fd2f389574a921bf Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Fri, 13 Sep 2024 08:47:11 +0000 Subject: perf tests: Add topdown events counting and sampling tests Add counting and leader sampling tests to verify topdown events including raw format can be reordered correctly. Reviewed-by: Kan Liang Signed-off-by: Dapeng Mi Cc: Yongwei Ma Link: https://lore.kernel.org/r/20240913084712.13861-6-dapeng1.mi@linux.intel.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/record.sh | 17 +++++++++++++++++ tools/perf/tests/shell/stat.sh | 6 ++++++ 2 files changed, 23 insertions(+) (limited to 'tools') diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh index 45baf7910640..8d6366d96883 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -255,6 +255,22 @@ test_leader_sampling() { echo "Basic leader sampling test [Success]" } +test_topdown_leader_sampling() { + echo "Topdown leader sampling test" + if ! perf stat -e "{slots,topdown-retiring}" true 2> /dev/null + then + echo "Topdown leader sampling [Skipped event parsing failed]" + return + fi + if ! perf record -o "${perfdata}" -e "{instructions,slots,topdown-retiring}:S" true 2> /dev/null + then + echo "Topdown leader sampling [Failed topdown events not reordered correctly]" + err=1 + return + fi + echo "Topdown leader sampling test [Success]" +} + # raise the limit of file descriptors to minimum if [[ $default_fd_limit -lt $min_fd_limit ]]; then ulimit -Sn $min_fd_limit @@ -267,6 +283,7 @@ test_workload test_branch_counter test_cgroup test_leader_sampling +test_topdown_leader_sampling # restore the default value ulimit -Sn $default_fd_limit diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh index 5a2ca2bcf94d..b90a35906ee7 100755 --- a/tools/perf/tests/shell/stat.sh +++ b/tools/perf/tests/shell/stat.sh @@ -79,6 +79,12 @@ test_topdown_groups() { err=1 return fi + if perf stat -e '{instructions,r400,r8000}' true 2>&1 | grep -E -q "" + then + echo "Topdown event group test [Failed raw format slots not reordered first]" + err=1 + return + fi echo "Topdown event group test [Success]" } -- cgit v1.2.3 From 80f192724e314ba860206e51bc1e3bc1ac7f58dd Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Fri, 13 Sep 2024 08:47:12 +0000 Subject: perf tests: Add more topdown events regroup tests Add more test cases to cover all supported topdown events regroup cases. Reviewed-by: Kan Liang Signed-off-by: Dapeng Mi Cc: Yongwei Ma Link: https://lore.kernel.org/r/20240913084712.13861-7-dapeng1.mi@linux.intel.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/stat.sh | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh index b90a35906ee7..f25ef468b8fc 100755 --- a/tools/perf/tests/shell/stat.sh +++ b/tools/perf/tests/shell/stat.sh @@ -73,9 +73,27 @@ test_topdown_groups() { err=1 return fi - if perf stat -e '{topdown-retiring,slots}' true 2>&1 | grep -E -q "" + if perf stat -e 'instructions,topdown-retiring,slots' true 2>&1 | grep -E -q "" then - echo "Topdown event group test [Failed slots not reordered first]" + echo "Topdown event group test [Failed slots not reordered first in no-group case]" + err=1 + return + fi + if perf stat -e '{instructions,topdown-retiring,slots}' true 2>&1 | grep -E -q "" + then + echo "Topdown event group test [Failed slots not reordered first in single group case]" + err=1 + return + fi + if perf stat -e '{instructions,slots},topdown-retiring' true 2>&1 | grep -E -q "" + then + echo "Topdown event group test [Failed topdown metrics event not move into slots group]" + err=1 + return + fi + if perf stat -e '{instructions,slots},{topdown-retiring}' true 2>&1 | grep -E -q "" + then + echo "Topdown event group test [Failed topdown metrics group not merge into slots group]" err=1 return fi -- cgit v1.2.3 From 83752e12896a72b24845c94f000e4c51b2bc5b50 Mon Sep 17 00:00:00 2001 From: Nicolas Rybowski Date: Thu, 26 Sep 2024 19:30:22 +0200 Subject: selftests/bpf: Add mptcp subflow example Move Nicolas' patch into bpf selftests directory. This example adds a different mark (SO_MARK) on each subflow, and changes the TCP CC only on the first subflow. From the userspace, an application can do a setsockopt() on an MPTCP socket, and typically the same value will be propagated to all subflows (paths). If someone wants to have different values per subflow, the recommended way is to use BPF. So it is good to add such example here, and make sure there is no regressions. This example shows how it is possible to: Identify the parent msk of an MPTCP subflow. Put different sockopt for each subflow of a same MPTCP connection. Here especially, two different behaviours are implemented: A socket mark (SOL_SOCKET SO_MARK) is put on each subflow of a same MPTCP connection. The order of creation of the current subflow defines its mark. The TCP CC algorithm of the very first subflow of an MPTCP connection is set to "reno". This is just to show it is possible to identify an MPTCP connection, and set socket options, from different SOL levels, per subflow. "reno" has been picked because it is built-in and usually not set as default one. It is easy to verify with 'ss' that these modifications have been applied correctly. That's what the next patch is going to do. Nicolas' code comes from: commit 4d120186e4d6 ("bpf:examples: update mptcp_set_mark_kern.c") from the MPTCP repo https://github.com/multipath-tcp/mptcp_net-next (the "scripts" branch), and it has been adapted by Geliang. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/76 Co-developed-by: Geliang Tang Signed-off-by: Geliang Tang Signed-off-by: Nicolas Rybowski Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://lore.kernel.org/r/20240926-upstream-bpf-next-20240506-mptcp-subflow-test-v7-1-d26029e15cdd@kernel.org Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/progs/mptcp_subflow.c | 59 +++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/mptcp_subflow.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/mptcp_subflow.c b/tools/testing/selftests/bpf/progs/mptcp_subflow.c new file mode 100644 index 000000000000..2e28f4a215b5 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/mptcp_subflow.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2020, Tessares SA. */ +/* Copyright (c) 2024, Kylin Software */ + +/* vmlinux.h, bpf_helpers.h and other 'define' */ +#include "bpf_tracing_net.h" + +char _license[] SEC("license") = "GPL"; + +char cc[TCP_CA_NAME_MAX] = "reno"; + +/* Associate a subflow counter to each token */ +struct { + __uint(type, BPF_MAP_TYPE_HASH); + __uint(key_size, sizeof(__u32)); + __uint(value_size, sizeof(__u32)); + __uint(max_entries, 100); +} mptcp_sf SEC(".maps"); + +SEC("sockops") +int mptcp_subflow(struct bpf_sock_ops *skops) +{ + __u32 init = 1, key, mark, *cnt; + struct mptcp_sock *msk; + struct bpf_sock *sk; + int err; + + if (skops->op != BPF_SOCK_OPS_TCP_CONNECT_CB) + return 1; + + sk = skops->sk; + if (!sk) + return 1; + + msk = bpf_skc_to_mptcp_sock(sk); + if (!msk) + return 1; + + key = msk->token; + cnt = bpf_map_lookup_elem(&mptcp_sf, &key); + if (cnt) { + /* A new subflow is added to an existing MPTCP connection */ + __sync_fetch_and_add(cnt, 1); + mark = *cnt; + } else { + /* A new MPTCP connection is just initiated and this is its primary subflow */ + bpf_map_update_elem(&mptcp_sf, &key, &init, BPF_ANY); + mark = init; + } + + /* Set the mark of the subflow's socket based on appearance order */ + err = bpf_setsockopt(skops, SOL_SOCKET, SO_MARK, &mark, sizeof(mark)); + if (err < 0) + return 1; + if (mark == 2) + err = bpf_setsockopt(skops, SOL_TCP, TCP_CONGESTION, cc, TCP_CA_NAME_MAX); + + return 1; +} -- cgit v1.2.3 From cd19b885106e0a24c28ef72fccc4c020782e6e7e Mon Sep 17 00:00:00 2001 From: Geliang Tang Date: Thu, 26 Sep 2024 19:30:23 +0200 Subject: selftests/bpf: Add getsockopt to inspect mptcp subflow This patch adds a "cgroup/getsockopt" way to inspect the subflows of an MPTCP socket, and verify the modifications done by the same BPF program in the previous commit: a different mark per subflow, and a different TCP CC set on the second one. This new hook will be used by the next commit to verify the socket options set on each subflow. This extra "cgroup/getsockopt" prog walks the msk->conn_list and use bpf_core_cast to cast a pointer for readonly. It allows to inspect all the fields of a structure. Note that on the kernel side, the MPTCP socket stores a list of subflows under 'msk->conn_list'. They can be iterated using the generic 'list' helpers. They have been imported here, with a small difference: list_for_each_entry() uses 'can_loop' to limit the number of iterations, and ease its use. Because only data need to be read here, it is enough to use this technique. It is planned to use bpf_iter, when BPF programs will be used to modify data from the different subflows. mptcp_subflow_tcp_sock() and mptcp_for_each_stubflow() helpers have also be imported. Suggested-by: Martin KaFai Lau Signed-off-by: Geliang Tang Reviewed-by: Matthieu Baerts (NGI0) Signed-off-by: Matthieu Baerts (NGI0) Link: https://lore.kernel.org/r/20240926-upstream-bpf-next-20240506-mptcp-subflow-test-v7-2-d26029e15cdd@kernel.org Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/progs/mptcp_bpf.h | 42 ++++++++++++++ tools/testing/selftests/bpf/progs/mptcp_subflow.c | 69 +++++++++++++++++++++++ 2 files changed, 111 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/mptcp_bpf.h (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/mptcp_bpf.h b/tools/testing/selftests/bpf/progs/mptcp_bpf.h new file mode 100644 index 000000000000..3b188ccdcc40 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/mptcp_bpf.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ +#ifndef __MPTCP_BPF_H__ +#define __MPTCP_BPF_H__ + +#include "bpf_experimental.h" + +/* list helpers from include/linux/list.h */ +static inline int list_is_head(const struct list_head *list, + const struct list_head *head) +{ + return list == head; +} + +#define list_entry(ptr, type, member) \ + container_of(ptr, type, member) + +#define list_first_entry(ptr, type, member) \ + list_entry((ptr)->next, type, member) + +#define list_next_entry(pos, member) \ + list_entry((pos)->member.next, typeof(*(pos)), member) + +#define list_entry_is_head(pos, head, member) \ + list_is_head(&pos->member, (head)) + +/* small difference: 'can_loop' has been added in the conditions */ +#define list_for_each_entry(pos, head, member) \ + for (pos = list_first_entry(head, typeof(*pos), member); \ + !list_entry_is_head(pos, head, member) && can_loop; \ + pos = list_next_entry(pos, member)) + +/* mptcp helpers from protocol.h */ +#define mptcp_for_each_subflow(__msk, __subflow) \ + list_for_each_entry(__subflow, &((__msk)->conn_list), node) + +static __always_inline struct sock * +mptcp_subflow_tcp_sock(const struct mptcp_subflow_context *subflow) +{ + return subflow->tcp_sock; +} + +#endif diff --git a/tools/testing/selftests/bpf/progs/mptcp_subflow.c b/tools/testing/selftests/bpf/progs/mptcp_subflow.c index 2e28f4a215b5..70302477e326 100644 --- a/tools/testing/selftests/bpf/progs/mptcp_subflow.c +++ b/tools/testing/selftests/bpf/progs/mptcp_subflow.c @@ -4,10 +4,12 @@ /* vmlinux.h, bpf_helpers.h and other 'define' */ #include "bpf_tracing_net.h" +#include "mptcp_bpf.h" char _license[] SEC("license") = "GPL"; char cc[TCP_CA_NAME_MAX] = "reno"; +int pid; /* Associate a subflow counter to each token */ struct { @@ -57,3 +59,70 @@ int mptcp_subflow(struct bpf_sock_ops *skops) return 1; } + +static int _check_getsockopt_subflow_mark(struct mptcp_sock *msk, struct bpf_sockopt *ctx) +{ + struct mptcp_subflow_context *subflow; + int i = 0; + + mptcp_for_each_subflow(msk, subflow) { + struct sock *ssk; + + ssk = mptcp_subflow_tcp_sock(bpf_core_cast(subflow, + struct mptcp_subflow_context)); + + if (ssk->sk_mark != ++i) { + ctx->retval = -2; + break; + } + } + + return 1; +} + +static int _check_getsockopt_subflow_cc(struct mptcp_sock *msk, struct bpf_sockopt *ctx) +{ + struct mptcp_subflow_context *subflow; + + mptcp_for_each_subflow(msk, subflow) { + struct inet_connection_sock *icsk; + struct sock *ssk; + + ssk = mptcp_subflow_tcp_sock(bpf_core_cast(subflow, + struct mptcp_subflow_context)); + icsk = bpf_core_cast(ssk, struct inet_connection_sock); + + if (ssk->sk_mark == 2 && + __builtin_memcmp(icsk->icsk_ca_ops->name, cc, TCP_CA_NAME_MAX)) { + ctx->retval = -2; + break; + } + } + + return 1; +} + +SEC("cgroup/getsockopt") +int _getsockopt_subflow(struct bpf_sockopt *ctx) +{ + struct bpf_sock *sk = ctx->sk; + struct mptcp_sock *msk; + + if (bpf_get_current_pid_tgid() >> 32 != pid) + return 1; + + if (!sk || sk->protocol != IPPROTO_MPTCP || + (!(ctx->level == SOL_SOCKET && ctx->optname == SO_MARK) && + !(ctx->level == SOL_TCP && ctx->optname == TCP_CONGESTION))) + return 1; + + msk = bpf_core_cast(sk, struct mptcp_sock); + if (msk->pm.subflows != 1) { + ctx->retval = -1; + return 1; + } + + if (ctx->optname == SO_MARK) + return _check_getsockopt_subflow_mark(msk, ctx); + return _check_getsockopt_subflow_cc(msk, ctx); +} -- cgit v1.2.3 From 9b85f11efa02f3dc78c60961c0b9cff166516464 Mon Sep 17 00:00:00 2001 From: Geliang Tang Date: Thu, 26 Sep 2024 19:30:24 +0200 Subject: selftests/bpf: Add mptcp subflow subtest This patch adds a subtest named test_subflow in test_mptcp to load and verify the newly added MPTCP subflow BPF program. To goal is to make sure it is possible to set different socket options per subflows, while the userspace socket interface only lets the application to set the same socket options for the whole MPTCP connection and its multiple subflows. To check that, a client and a server are started in a dedicated netns, with veth interfaces to simulate multiple paths. They will exchange data to allow the creation of an additional subflow. When the different subflows are being created, the new MPTCP subflow BPF program will set some socket options: marks and TCP CC. The validation is done by the same program, when the userspace checks the value of the modified socket options. On the userspace side, it will see that the default values are still being used on the MPTCP connection, while the BPF program will see different options set per subflow of the same MPTCP connection. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/76 Signed-off-by: Geliang Tang Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://lore.kernel.org/r/20240926-upstream-bpf-next-20240506-mptcp-subflow-test-v7-3-d26029e15cdd@kernel.org Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/prog_tests/mptcp.c | 121 +++++++++++++++++++++++++ 1 file changed, 121 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/mptcp.c b/tools/testing/selftests/bpf/prog_tests/mptcp.c index d2ca32fa3b21..be3cad2aff77 100644 --- a/tools/testing/selftests/bpf/prog_tests/mptcp.c +++ b/tools/testing/selftests/bpf/prog_tests/mptcp.c @@ -5,12 +5,17 @@ #include #include #include +#include #include "cgroup_helpers.h" #include "network_helpers.h" #include "mptcp_sock.skel.h" #include "mptcpify.skel.h" +#include "mptcp_subflow.skel.h" #define NS_TEST "mptcp_ns" +#define ADDR_1 "10.0.1.1" +#define ADDR_2 "10.0.1.2" +#define PORT_1 10001 #ifndef IPPROTO_MPTCP #define IPPROTO_MPTCP 262 @@ -335,10 +340,126 @@ fail: close(cgroup_fd); } +static int endpoint_init(char *flags) +{ + SYS(fail, "ip -net %s link add veth1 type veth peer name veth2", NS_TEST); + SYS(fail, "ip -net %s addr add %s/24 dev veth1", NS_TEST, ADDR_1); + SYS(fail, "ip -net %s link set dev veth1 up", NS_TEST); + SYS(fail, "ip -net %s addr add %s/24 dev veth2", NS_TEST, ADDR_2); + SYS(fail, "ip -net %s link set dev veth2 up", NS_TEST); + if (SYS_NOFAIL("ip -net %s mptcp endpoint add %s %s", NS_TEST, ADDR_2, flags)) { + printf("'ip mptcp' not supported, skip this test.\n"); + test__skip(); + goto fail; + } + + return 0; +fail: + return -1; +} + +static void wait_for_new_subflows(int fd) +{ + socklen_t len; + u8 subflows; + int err, i; + + len = sizeof(subflows); + /* Wait max 5 sec for new subflows to be created */ + for (i = 0; i < 50; i++) { + err = getsockopt(fd, SOL_MPTCP, MPTCP_INFO, &subflows, &len); + if (!err && subflows > 0) + break; + + usleep(100000); /* 0.1s */ + } +} + +static void run_subflow(void) +{ + int server_fd, client_fd, err; + char new[TCP_CA_NAME_MAX]; + char cc[TCP_CA_NAME_MAX]; + unsigned int mark; + socklen_t len; + + server_fd = start_mptcp_server(AF_INET, ADDR_1, PORT_1, 0); + if (!ASSERT_OK_FD(server_fd, "start_mptcp_server")) + return; + + client_fd = connect_to_fd(server_fd, 0); + if (!ASSERT_OK_FD(client_fd, "connect_to_fd")) + goto close_server; + + send_byte(client_fd); + wait_for_new_subflows(client_fd); + + len = sizeof(mark); + err = getsockopt(client_fd, SOL_SOCKET, SO_MARK, &mark, &len); + if (ASSERT_OK(err, "getsockopt(client_fd, SO_MARK)")) + ASSERT_EQ(mark, 0, "mark"); + + len = sizeof(new); + err = getsockopt(client_fd, SOL_TCP, TCP_CONGESTION, new, &len); + if (ASSERT_OK(err, "getsockopt(client_fd, TCP_CONGESTION)")) { + get_msk_ca_name(cc); + ASSERT_STREQ(new, cc, "cc"); + } + + close(client_fd); +close_server: + close(server_fd); +} + +static void test_subflow(void) +{ + struct mptcp_subflow *skel; + struct nstoken *nstoken; + int cgroup_fd; + + cgroup_fd = test__join_cgroup("/mptcp_subflow"); + if (!ASSERT_OK_FD(cgroup_fd, "join_cgroup: mptcp_subflow")) + return; + + skel = mptcp_subflow__open_and_load(); + if (!ASSERT_OK_PTR(skel, "skel_open_load: mptcp_subflow")) + goto close_cgroup; + + skel->bss->pid = getpid(); + + skel->links.mptcp_subflow = + bpf_program__attach_cgroup(skel->progs.mptcp_subflow, cgroup_fd); + if (!ASSERT_OK_PTR(skel->links.mptcp_subflow, "attach mptcp_subflow")) + goto skel_destroy; + + skel->links._getsockopt_subflow = + bpf_program__attach_cgroup(skel->progs._getsockopt_subflow, cgroup_fd); + if (!ASSERT_OK_PTR(skel->links._getsockopt_subflow, "attach _getsockopt_subflow")) + goto skel_destroy; + + nstoken = create_netns(); + if (!ASSERT_OK_PTR(nstoken, "create_netns: mptcp_subflow")) + goto skel_destroy; + + if (endpoint_init("subflow") < 0) + goto close_netns; + + run_subflow(); + +close_netns: + cleanup_netns(nstoken); +skel_destroy: + mptcp_subflow__destroy(skel); +close_cgroup: + close(cgroup_fd); +} + void test_mptcp(void) { if (test__start_subtest("base")) test_base(); if (test__start_subtest("mptcpify")) test_mptcpify(); + if (test__start_subtest("subflow")) + test_subflow(); } -- cgit v1.2.3 From 2314dca1b36629f352b0f919cdab16ca3fcaea42 Mon Sep 17 00:00:00 2001 From: "John B. Wyatt IV" Date: Mon, 30 Sep 2024 19:21:54 -0400 Subject: pm: cpupower: bindings: Improve disable c_state block This commit fixes a bad comment, removes an unneeded code block, and catches a few more states that cpuidle_state_disable with the test script. Part of the motivation for this commit was I kept forgetting to use sudo. Signed-off-by: "John B. Wyatt IV" Signed-off-by: "John B. Wyatt IV" Signed-off-by: Shuah Khan --- .../power/cpupower/bindings/python/test_raw_pylibcpupower.py | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py b/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py index 3d6f62b9556a..bb2b26db8b10 100755 --- a/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py +++ b/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py @@ -15,21 +15,21 @@ else: print(f"cstate count error: return code: {cpu_cstates_count}") """ -Disable cstate (will fail if the above is 0, ex: a virtual machine) +Disable cstate (will fail if the above returns is under 1, ex: a virtual machine) """ cstate_disabled = p.cpuidle_state_disable(0, 0, 1) -if cpu_cstates_count == 0: - print(f"CPU 0 has {cpu_cstates_count} c-states") -else: - print(f"cstate count error: return code: {cpu_cstates_count}") match cstate_disabled: case 0: print(f"CPU state disabled") case -1: print(f"Idlestate not available") + case -2: + print(f"Disabling is not supported by the kernel") + case -3: + print(f"No write access to disable/enable C-states: try using sudo") case _: - print(f"Not documented") + print(f"Not documented: {cstate_disabled}") # Pointer example -- cgit v1.2.3 From b6a2dbf88aa793a288f77e0eddb395f79594908f Mon Sep 17 00:00:00 2001 From: "John B. Wyatt IV" Date: Mon, 30 Sep 2024 19:21:55 -0400 Subject: pm: cpupower: bindings: Add test to confirm cpu state is disabled Add a simple test to confirm and print out the cpu state. Signed-off-by: "John B. Wyatt IV" Signed-off-by: "John B. Wyatt IV" Signed-off-by: Shuah Khan --- .../cpupower/bindings/python/test_raw_pylibcpupower.py | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'tools') diff --git a/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py b/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py index bb2b26db8b10..ca5aa46c9b20 100755 --- a/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py +++ b/tools/power/cpupower/bindings/python/test_raw_pylibcpupower.py @@ -31,6 +31,22 @@ match cstate_disabled: case _: print(f"Not documented: {cstate_disabled}") +""" +Test cstate is disabled +""" +is_cstate_disabled = p.cpuidle_is_state_disabled(0, 0) + +match is_cstate_disabled: + case 1: + print(f"CPU is disabled") + case 0: + print(f"CPU is enabled") + case -1: + print(f"Idlestate not available") + case -2: + print(f"Disabling is not supported by kernel") + case _: + print(f"Not documented: {is_cstate_disabled}") # Pointer example -- cgit v1.2.3 From 8d7f85e323ea402005fa83ddbdf5d00292d77098 Mon Sep 17 00:00:00 2001 From: Kan Liang Date: Mon, 30 Sep 2024 19:14:31 -0700 Subject: perf jevents: Don't stop at the first matched pmu when searching a events table The "perf all PMU test" fails on a Coffee Lake machine. The failure is caused by the below change in the commit e2641db83f18 ("perf vendor events: Add/update skylake events/metrics"). + { + "BriefDescription": "This 48-bit fixed counter counts the UCLK cycles", + "Counter": "FIXED", + "EventCode": "0xff", + "EventName": "UNC_CLOCK.SOCKET", + "PerPkg": "1", + "PublicDescription": "This 48-bit fixed counter counts the UCLK cycles.", + "Unit": "cbox_0" } The other cbox events have the unit name "CBOX", while the fixed counter has a unit name "cbox_0". So the events_table will maintain separate entries for cbox and cbox_0. The perf_pmus__print_pmu_events() calculates the total number of events, allocate an aliases buffer, store all the events into the buffer, sort, and print all the aliases one by one. The problem is that the calculated total number of events doesn't match the stored events in the aliases buffer. The perf_pmu__num_events() is used to calculate the number of events. It invokes the pmu_events_table__num_events() to go through the entire events_table to find all events. Because of the pmu_uncore_alias_match(), the suffix of uncore PMU will be ignored. So the events for cbox and cbox_0 are all counted. When storing events into the aliases buffer, the perf_pmu__for_each_event() only process the events for cbox. Since a bigger buffer was allocated, the last entry are all 0. When printing all the aliases, null will be outputted, and trigger the failure. The mismatch was introduced from the commit e3edd6cf6399 ("perf pmu-events: Reduce processed events by passing PMU"). The pmu_events_table__for_each_event() stops immediately once a pmu is set. But for uncore, especially this case, the method is wrong and mismatch what perf does in the perf_pmu__num_events(). With the patch, $ perf list pmu | grep -A 1 clock.socket unc_clock.socket [This 48-bit fixed counter counts the UCLK cycles. Unit: uncore_cbox_0 $ perf test "perf all PMU test" 107: perf all PMU test : Ok Reported-by: kernel test robot Closes: https://lore.kernel.org/all/202407101021.2c8baddb-oliver.sang@intel.com/ Fixes: e3edd6cf6399 ("perf pmu-events: Reduce processed events by passing PMU") Signed-off-by: Kan Liang Reviewed-by: Ian Rogers Cc: Sandipan Das Cc: Benjamin Gray Cc: Xu Yang Cc: John Garry Link: https://lore.kernel.org/r/20241001021431.814811-1-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/pmu-events/empty-pmu-events.c | 2 +- tools/perf/pmu-events/jevents.py | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c index c592079982fb..873e9fb2041f 100644 --- a/tools/perf/pmu-events/empty-pmu-events.c +++ b/tools/perf/pmu-events/empty-pmu-events.c @@ -380,7 +380,7 @@ int pmu_events_table__for_each_event(const struct pmu_events_table *table, continue; ret = pmu_events_table__for_each_event_pmu(table, table_pmu, fn, data); - if (pmu || ret) + if (ret) return ret; } return 0; diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py index bb0a5d92df4a..d46a22fb5573 100755 --- a/tools/perf/pmu-events/jevents.py +++ b/tools/perf/pmu-events/jevents.py @@ -930,7 +930,7 @@ int pmu_events_table__for_each_event(const struct pmu_events_table *table, continue; ret = pmu_events_table__for_each_event_pmu(table, table_pmu, fn, data); - if (pmu || ret) + if (ret) return ret; } return 0; -- cgit v1.2.3 From 7f6ccb70e465bd8c9cf8973aee1c01224e4bdb3c Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 30 Sep 2024 22:23:24 -0700 Subject: perf stat: Fix affinity memory leaks on error path Missed cleanup when an error occurs. Fixes: 49de179577e7 ("perf stat: No need to setup affinities when starting a workload") Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20241001052327.7052-2-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 1521b6df2606..3e6b9f216e80 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -827,6 +827,7 @@ try_again_reset: } } affinity__cleanup(affinity); + affinity = NULL; evlist__for_each_entry(evsel_list, counter) { if (!counter->supported) { @@ -965,6 +966,7 @@ err_out: if (forks) evlist__cancel_workload(evsel_list); + affinity__cleanup(affinity); return err; } -- cgit v1.2.3 From 1334ee91694c21777d2df1da20bc5d5a7022a1e5 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 30 Sep 2024 22:23:25 -0700 Subject: perf test: Fix memory leaks on event-times error paths These error paths occur without sufficient permissions. Fix the memory leaks to make leak sanitizer happier. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20241001052327.7052-3-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/event-times.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/event-times.c b/tools/perf/tests/event-times.c index e155f0e0e04d..deefe5003bfc 100644 --- a/tools/perf/tests/event-times.c +++ b/tools/perf/tests/event-times.c @@ -126,6 +126,7 @@ static int attach__cpu_disabled(struct evlist *evlist) evsel->core.attr.disabled = 1; err = evsel__open_per_cpu(evsel, cpus, -1); + perf_cpu_map__put(cpus); if (err) { if (err == -EACCES) return TEST_SKIP; @@ -134,7 +135,6 @@ static int attach__cpu_disabled(struct evlist *evlist) return err; } - perf_cpu_map__put(cpus); return evsel__enable(evsel); } @@ -153,10 +153,10 @@ static int attach__cpu_enabled(struct evlist *evlist) } err = evsel__open_per_cpu(evsel, cpus, -1); + perf_cpu_map__put(cpus); if (err == -EACCES) return TEST_SKIP; - perf_cpu_map__put(cpus); return err ? TEST_FAIL : TEST_OK; } @@ -188,6 +188,7 @@ static int test_times(int (attach)(struct evlist *), err = attach(evlist); if (err == TEST_SKIP) { pr_debug(" SKIP : not enough rights\n"); + evlist__delete(evlist); return err; } -- cgit v1.2.3 From 7457bcfcfb988a5600dca2433bbc4901ba49d123 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 30 Sep 2024 22:23:26 -0700 Subject: perf test: Skip not fail tp fields test when insufficient permissions Clean up return value to be TEST_* rather than unspecific integer. Add test case skip reason. Skip test if EACCES comes back from evsel__newtp. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20241001052327.7052-4-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/evsel-tp-sched.c | 40 ++++++++++++++++++++++++--------------- 1 file changed, 25 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c index cf4da3d748c2..3da6a76eac38 100644 --- a/tools/perf/tests/evsel-tp-sched.c +++ b/tools/perf/tests/evsel-tp-sched.c @@ -36,33 +36,33 @@ static int test__perf_evsel__tp_sched_test(struct test_suite *test __maybe_unuse int subtest __maybe_unused) { struct evsel *evsel = evsel__newtp("sched", "sched_switch"); - int ret = 0; + int ret = TEST_OK; if (IS_ERR(evsel)) { pr_debug("evsel__newtp failed with %ld\n", PTR_ERR(evsel)); - return -1; + return PTR_ERR(evsel) == -EACCES ? TEST_SKIP : TEST_FAIL; } if (evsel__test_field(evsel, "prev_comm", 16, false)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "prev_pid", 4, true)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "prev_prio", 4, true)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "prev_state", sizeof(long), true)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "next_comm", 16, false)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "next_pid", 4, true)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "next_prio", 4, true)) - ret = -1; + ret = TEST_FAIL; evsel__delete(evsel); @@ -70,23 +70,33 @@ static int test__perf_evsel__tp_sched_test(struct test_suite *test __maybe_unuse if (IS_ERR(evsel)) { pr_debug("evsel__newtp failed with %ld\n", PTR_ERR(evsel)); - return -1; + return TEST_FAIL; } if (evsel__test_field(evsel, "comm", 16, false)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "pid", 4, true)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "prio", 4, true)) - ret = -1; + ret = TEST_FAIL; if (evsel__test_field(evsel, "target_cpu", 4, true)) - ret = -1; + ret = TEST_FAIL; evsel__delete(evsel); return ret; } -DEFINE_SUITE("Parse sched tracepoints fields", perf_evsel__tp_sched_test); +static struct test_case tests__perf_evsel__tp_sched_test[] = { + TEST_CASE_REASON("Parse sched tracepoints fields", + perf_evsel__tp_sched_test, + "permissions"), + { .name = NULL, } +}; + +struct test_suite suite__perf_evsel__tp_sched_test = { + .desc = "Parse sched tracepoints fields", + .test_cases = tests__perf_evsel__tp_sched_test, +}; -- cgit v1.2.3 From ad321b19d2bb6ed0380ad53a06972ea7f4e7d7b1 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 30 Sep 2024 22:23:27 -0700 Subject: perf test: Skip not fail syscall tp fields test when insufficient permissions Clean up return value to be TEST_* rather than unspecific integer. Add test case skip reason. Skip test if EACCES comes back from evsel__newtp. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20241001052327.7052-5-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/openat-syscall-tp-fields.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/openat-syscall-tp-fields.c b/tools/perf/tests/openat-syscall-tp-fields.c index 888df8eca981..3943da441979 100644 --- a/tools/perf/tests/openat-syscall-tp-fields.c +++ b/tools/perf/tests/openat-syscall-tp-fields.c @@ -40,7 +40,7 @@ static int test__syscall_openat_tp_fields(struct test_suite *test __maybe_unused int flags = O_RDONLY | O_DIRECTORY; struct evlist *evlist = evlist__new(); struct evsel *evsel; - int err = -1, i, nr_events = 0, nr_polls = 0; + int ret = TEST_FAIL, err, i, nr_events = 0, nr_polls = 0; char sbuf[STRERR_BUFSIZE]; if (evlist == NULL) { @@ -51,6 +51,7 @@ static int test__syscall_openat_tp_fields(struct test_suite *test __maybe_unused evsel = evsel__newtp("syscalls", "sys_enter_openat"); if (IS_ERR(evsel)) { pr_debug("%s: evsel__newtp\n", __func__); + ret = PTR_ERR(evsel) == -EACCES ? TEST_SKIP : TEST_FAIL; goto out_delete_evlist; } @@ -138,11 +139,21 @@ static int test__syscall_openat_tp_fields(struct test_suite *test __maybe_unused } } out_ok: - err = 0; + ret = TEST_OK; out_delete_evlist: evlist__delete(evlist); out: - return err; + return ret; } -DEFINE_SUITE("syscalls:sys_enter_openat event fields", syscall_openat_tp_fields); +static struct test_case tests__syscall_openat_tp_fields[] = { + TEST_CASE_REASON("syscalls:sys_enter_openat event fields", + syscall_openat_tp_fields, + "permissions"), + { .name = NULL, } +}; + +struct test_suite suite__syscall_openat_tp_fields = { + .desc = "syscalls:sys_enter_openat event fields", + .test_cases = tests__syscall_openat_tp_fields, +}; -- cgit v1.2.3 From 80c281fca252827facd05875b8d9d36d7aad0f8d Mon Sep 17 00:00:00 2001 From: Ben Gainey Date: Tue, 1 Oct 2024 13:15:04 +0100 Subject: tools/perf: Correctly calculate sample period for inherited SAMPLE_READ values Sample period calculation in deliver_sample_value is updated to calculate the per-thread period delta for events that are inherit + PERF_SAMPLE_READ. When the sampling event has this configuration, the read_format.id is used with the tid from the sample to lookup the storage of the previously accumulated counter total before calculating the delta. All existing valid configurations where read_format.value represents some global value continue to use just the read_format.id to locate the storage of the previously accumulated total. perf_sample_id is modified to support tracking per-thread values, along with the existing global per-id values. In the per-thread case, values are stored in a hash by tid within the perf_sample_id, and are dynamically allocated as the number is not known ahead of time. Signed-off-by: Ben Gainey Cc: james.clark@arm.com Link: https://lore.kernel.org/r/20241001121505.1009685-2-ben.gainey@arm.com Signed-off-by: Namhyung Kim --- tools/lib/perf/evsel.c | 48 +++++++++++++++++++++++++ tools/lib/perf/include/internal/evsel.h | 63 +++++++++++++++++++++++++++++++-- tools/perf/util/session.c | 28 ++++++++++----- 3 files changed, 128 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/lib/perf/evsel.c b/tools/lib/perf/evsel.c index c07160953224..c475319e2e41 100644 --- a/tools/lib/perf/evsel.c +++ b/tools/lib/perf/evsel.c @@ -5,6 +5,7 @@ #include #include #include +#include #include #include #include @@ -23,6 +24,7 @@ void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr, int idx) { INIT_LIST_HEAD(&evsel->node); + INIT_LIST_HEAD(&evsel->per_stream_periods); evsel->attr = *attr; evsel->idx = idx; evsel->leader = evsel; @@ -531,10 +533,56 @@ int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads) void perf_evsel__free_id(struct perf_evsel *evsel) { + struct perf_sample_id_period *pos, *n; + xyarray__delete(evsel->sample_id); evsel->sample_id = NULL; zfree(&evsel->id); evsel->ids = 0; + + perf_evsel_for_each_per_thread_period_safe(evsel, n, pos) { + list_del_init(&pos->node); + free(pos); + } +} + +bool perf_evsel__attr_has_per_thread_sample_period(struct perf_evsel *evsel) +{ + return (evsel->attr.sample_type & PERF_SAMPLE_READ) && + (evsel->attr.sample_type & PERF_SAMPLE_TID) && + evsel->attr.inherit; +} + +u64 *perf_sample_id__get_period_storage(struct perf_sample_id *sid, u32 tid, bool per_thread) +{ + struct hlist_head *head; + struct perf_sample_id_period *res; + int hash; + + if (!per_thread) + return &sid->period; + + hash = hash_32(tid, PERF_SAMPLE_ID__HLIST_BITS); + head = &sid->periods[hash]; + + hlist_for_each_entry(res, head, hnode) + if (res->tid == tid) + return &res->period; + + if (sid->evsel == NULL) + return NULL; + + res = zalloc(sizeof(struct perf_sample_id_period)); + if (res == NULL) + return NULL; + + INIT_LIST_HEAD(&res->node); + res->tid = tid; + + list_add_tail(&res->node, &sid->evsel->per_stream_periods); + hlist_add_head(&res->hnode, &sid->periods[hash]); + + return &res->period; } void perf_counts_values__scale(struct perf_counts_values *count, diff --git a/tools/lib/perf/include/internal/evsel.h b/tools/lib/perf/include/internal/evsel.h index 5cd220a61962..ea78defa77d0 100644 --- a/tools/lib/perf/include/internal/evsel.h +++ b/tools/lib/perf/include/internal/evsel.h @@ -11,6 +11,32 @@ struct perf_thread_map; struct xyarray; +/** + * The per-thread accumulated period storage node. + */ +struct perf_sample_id_period { + struct list_head node; + struct hlist_node hnode; + /* Holds total ID period value for PERF_SAMPLE_READ processing. */ + u64 period; + /* The TID that the values belongs to */ + u32 tid; +}; + +/** + * perf_evsel_for_each_per_thread_period_safe - safely iterate thru all the + * per_stream_periods + * @evlist:perf_evsel instance to iterate + * @item: struct perf_sample_id_period iterator + * @tmp: struct perf_sample_id_period temp iterator + */ +#define perf_evsel_for_each_per_thread_period_safe(evsel, tmp, item) \ + list_for_each_entry_safe(item, tmp, &(evsel)->per_stream_periods, node) + + +#define PERF_SAMPLE_ID__HLIST_BITS 4 +#define PERF_SAMPLE_ID__HLIST_SIZE (1 << PERF_SAMPLE_ID__HLIST_BITS) + /* * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are * more than one entry in the evlist. @@ -34,8 +60,32 @@ struct perf_sample_id { pid_t machine_pid; struct perf_cpu vcpu; - /* Holds total ID period value for PERF_SAMPLE_READ processing. */ - u64 period; + /* + * Per-thread, and global event counts are mutually exclusive: + * Whilst it is possible to combine events into a group with differing + * values of PERF_SAMPLE_READ, it is not valid to have inconsistent + * values for `inherit`. Therefore it is not possible to have a + * situation where a per-thread event is sampled as a global event; + * all !inherit groups are global, and all groups where the sampling + * event is inherit + PERF_SAMPLE_READ will be per-thread. Any event + * that is part of such a group that is inherit but not PERF_SAMPLE_READ + * will be read as per-thread. If such an event can also trigger a + * sample (such as with sample_period > 0) then it will not cause + * `read_format` to be included in its PERF_RECORD_SAMPLE, and + * therefore will not expose the per-thread group members as global. + */ + union { + /* + * Holds total ID period value for PERF_SAMPLE_READ processing + * (when period is not per-thread). + */ + u64 period; + /* + * Holds total ID period value for PERF_SAMPLE_READ processing + * (when period is per-thread). + */ + struct hlist_head periods[PERF_SAMPLE_ID__HLIST_SIZE]; + }; }; struct perf_evsel { @@ -58,6 +108,10 @@ struct perf_evsel { u32 ids; struct perf_evsel *leader; + /* For events where the read_format value is per-thread rather than + * global, stores the per-thread cumulative period */ + struct list_head per_stream_periods; + /* parse modifier helper */ int nr_members; /* @@ -88,4 +142,9 @@ int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter); int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads); void perf_evsel__free_id(struct perf_evsel *evsel); +bool perf_evsel__attr_has_per_thread_sample_period(struct perf_evsel *evsel); + +u64 *perf_sample_id__get_period_storage(struct perf_sample_id *sid, u32 tid, + bool per_thread); + #endif /* __LIBPERF_INTERNAL_EVSEL_H */ diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index dbaf07bf6c5f..507e6cba9545 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1171,18 +1171,24 @@ static int deliver_sample_value(struct evlist *evlist, union perf_event *event, struct perf_sample *sample, struct sample_read_value *v, - struct machine *machine) + struct machine *machine, + bool per_thread) { struct perf_sample_id *sid = evlist__id2sid(evlist, v->id); struct evsel *evsel; + u64 *storage = NULL; if (sid) { + storage = perf_sample_id__get_period_storage(sid, sample->tid, per_thread); + } + + if (storage) { sample->id = v->id; - sample->period = v->value - sid->period; - sid->period = v->value; + sample->period = v->value - *storage; + *storage = v->value; } - if (!sid || sid->evsel == NULL) { + if (!storage || sid->evsel == NULL) { ++evlist->stats.nr_unknown_id; return 0; } @@ -1203,17 +1209,19 @@ static int deliver_sample_group(struct evlist *evlist, union perf_event *event, struct perf_sample *sample, struct machine *machine, - u64 read_format) + u64 read_format, + bool per_thread) { int ret = -EINVAL; struct sample_read_value *v = sample->read.group.values; if (tool->dont_split_sample_group) - return deliver_sample_value(evlist, tool, event, sample, v, machine); + return deliver_sample_value(evlist, tool, event, sample, v, machine, + per_thread); sample_read_group__for_each(v, sample->read.group.nr, read_format) { ret = deliver_sample_value(evlist, tool, event, sample, v, - machine); + machine, per_thread); if (ret) break; } @@ -1228,6 +1236,7 @@ static int evlist__deliver_sample(struct evlist *evlist, const struct perf_tool /* We know evsel != NULL. */ u64 sample_type = evsel->core.attr.sample_type; u64 read_format = evsel->core.attr.read_format; + bool per_thread = perf_evsel__attr_has_per_thread_sample_period(&evsel->core); /* Standard sample delivery. */ if (!(sample_type & PERF_SAMPLE_READ)) @@ -1236,10 +1245,11 @@ static int evlist__deliver_sample(struct evlist *evlist, const struct perf_tool /* For PERF_SAMPLE_READ we have either single or group mode. */ if (read_format & PERF_FORMAT_GROUP) return deliver_sample_group(evlist, tool, event, sample, - machine, read_format); + machine, read_format, per_thread); else return deliver_sample_value(evlist, tool, event, sample, - &sample->read.one, machine); + &sample->read.one, machine, + per_thread); } static int machines__deliver_event(struct machines *machines, -- cgit v1.2.3 From 90035d3cd876cb71f98868d44ee60f5c5aa5ad69 Mon Sep 17 00:00:00 2001 From: Ben Gainey Date: Tue, 1 Oct 2024 13:15:05 +0100 Subject: tools/perf: Allow inherit + PERF_SAMPLE_READ when opening events The "perf record" tool will now default to this new mode if the user specifies a sampling group when not in system-wide mode, and when "--no-inherit" is not specified. This change updates evsel to allow the combination of inherit and PERF_SAMPLE_READ. A fallback is implemented for kernel versions where this feature is not supported. Signed-off-by: Ben Gainey Cc: james.clark@arm.com Link: https://lore.kernel.org/r/20241001121505.1009685-3-ben.gainey@arm.com Signed-off-by: Namhyung Kim --- tools/perf/tests/attr/README | 2 + tools/perf/tests/attr/test-record-C0 | 2 + tools/perf/tests/attr/test-record-dummy-C0 | 2 +- tools/perf/tests/attr/test-record-group-sampling | 3 +- tools/perf/tests/attr/test-record-group-sampling1 | 50 +++++++++++++++++++ tools/perf/tests/attr/test-record-group-sampling2 | 61 +++++++++++++++++++++++ tools/perf/tests/attr/test-record-group2 | 1 + tools/perf/tests/attr/test-record-group3 | 31 ++++++++++++ tools/perf/util/evsel.c | 21 ++++++-- tools/perf/util/evsel.h | 1 + 10 files changed, 169 insertions(+), 5 deletions(-) create mode 100644 tools/perf/tests/attr/test-record-group-sampling1 create mode 100644 tools/perf/tests/attr/test-record-group-sampling2 create mode 100644 tools/perf/tests/attr/test-record-group3 (limited to 'tools') diff --git a/tools/perf/tests/attr/README b/tools/perf/tests/attr/README index 4066fec7180a..67c4ca76b85d 100644 --- a/tools/perf/tests/attr/README +++ b/tools/perf/tests/attr/README @@ -51,6 +51,8 @@ Following tests are defined (with perf commands): perf record --call-graph fp kill (test-record-graph-fp-aarch64) perf record -e '{cycles,instructions}' kill (test-record-group1) perf record -e '{cycles/period=1/,instructions/period=2/}:S' kill (test-record-group2) + perf record -e '{cycles,cache-misses}:S' kill (test-record-group-sampling1) + perf record -c 10000 -e '{cycles,cache-misses}:S' kill (test-record-group-sampling2) perf record -D kill (test-record-no-delay) perf record -i kill (test-record-no-inherit) perf record -n kill (test-record-no-samples) diff --git a/tools/perf/tests/attr/test-record-C0 b/tools/perf/tests/attr/test-record-C0 index 198e8429a1bf..1049ac8b52f2 100644 --- a/tools/perf/tests/attr/test-record-C0 +++ b/tools/perf/tests/attr/test-record-C0 @@ -18,5 +18,7 @@ sample_type=65927 mmap=0 comm=0 task=0 +inherit=0 [event:system-wide-dummy] +inherit=0 diff --git a/tools/perf/tests/attr/test-record-dummy-C0 b/tools/perf/tests/attr/test-record-dummy-C0 index 576ec48b3aaf..3050298bd614 100644 --- a/tools/perf/tests/attr/test-record-dummy-C0 +++ b/tools/perf/tests/attr/test-record-dummy-C0 @@ -19,7 +19,7 @@ sample_period=4000 sample_type=391 read_format=4|20 disabled=0 -inherit=1 +inherit=0 pinned=0 exclusive=0 exclude_user=0 diff --git a/tools/perf/tests/attr/test-record-group-sampling b/tools/perf/tests/attr/test-record-group-sampling index 97e7e64a38f0..86a940d7895d 100644 --- a/tools/perf/tests/attr/test-record-group-sampling +++ b/tools/perf/tests/attr/test-record-group-sampling @@ -2,6 +2,7 @@ command = record args = --no-bpf-event -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 ret = 1 +kernel_until = 6.12 [event-1:base-record] fd=1 @@ -18,7 +19,7 @@ group_fd=1 type=0 config=3 -# default | PERF_SAMPLE_READ +# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD sample_type=343 # PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST diff --git a/tools/perf/tests/attr/test-record-group-sampling1 b/tools/perf/tests/attr/test-record-group-sampling1 new file mode 100644 index 000000000000..4748ab7bf684 --- /dev/null +++ b/tools/perf/tests/attr/test-record-group-sampling1 @@ -0,0 +1,50 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 +ret = 1 +kernel_since = 6.12 + +[event-1:base-record] +fd=1 +group_fd=-1 + +# cycles +type=0 +config=0 + +# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD +sample_type=343 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING +read_format=28|31 +task=1 +mmap=1 +comm=1 +enable_on_exec=1 +disabled=1 + +# inherit is enabled for group sampling +inherit=1 + +[event-2:base-record] +fd=2 +group_fd=1 + +# cache-misses +type=0 +config=3 + +# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD +sample_type=343 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING +read_format=28|31 +task=0 +mmap=0 +comm=0 +enable_on_exec=0 +disabled=0 +freq=0 + +# inherit is enabled for group sampling +inherit=1 diff --git a/tools/perf/tests/attr/test-record-group-sampling2 b/tools/perf/tests/attr/test-record-group-sampling2 new file mode 100644 index 000000000000..e0432244a0eb --- /dev/null +++ b/tools/perf/tests/attr/test-record-group-sampling2 @@ -0,0 +1,61 @@ +[config] +command = record +args = --no-bpf-event -c 10000 -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 +ret = 1 +kernel_since = 6.12 + +[event-1:base-record] +fd=1 +group_fd=-1 + +# cycles +type=0 +config=0 + +# default | PERF_SAMPLE_READ +sample_type=87 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING +read_format=28|31 +task=1 +mmap=1 +comm=1 +enable_on_exec=1 +disabled=1 + +# inherit is enabled for group sampling +inherit=1 + +# sampling disabled +sample_freq=0 +sample_period=10000 +freq=0 +write_backward=0 + +[event-2:base-record] +fd=2 +group_fd=1 + +# cache-misses +type=0 +config=3 + +# default | PERF_SAMPLE_READ +sample_type=87 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING +read_format=28|31 +task=0 +mmap=0 +comm=0 +enable_on_exec=0 +disabled=0 + +# inherit is enabled for group sampling +inherit=1 + +# sampling disabled +sample_freq=0 +sample_period=0 +freq=0 +write_backward=0 diff --git a/tools/perf/tests/attr/test-record-group2 b/tools/perf/tests/attr/test-record-group2 index cebdaa8e64e4..891d41a7bddf 100644 --- a/tools/perf/tests/attr/test-record-group2 +++ b/tools/perf/tests/attr/test-record-group2 @@ -2,6 +2,7 @@ command = record args = --no-bpf-event -e '{cycles/period=1234000/,instructions/period=6789000/}:S' kill >/dev/null 2>&1 ret = 1 +kernel_until = 6.12 [event-1:base-record] fd=1 diff --git a/tools/perf/tests/attr/test-record-group3 b/tools/perf/tests/attr/test-record-group3 new file mode 100644 index 000000000000..249be884959e --- /dev/null +++ b/tools/perf/tests/attr/test-record-group3 @@ -0,0 +1,31 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles/period=1234000/,instructions/period=6789000/}:S' kill >/dev/null 2>&1 +ret = 1 +kernel_since = 6.12 + +[event-1:base-record] +fd=1 +group_fd=-1 +config=0|1 +sample_period=1234000 +sample_type=87 +read_format=28|31 +disabled=1 +inherit=1 +freq=0 + +[event-2:base-record] +fd=2 +group_fd=1 +config=0|1 +sample_period=6789000 +sample_type=87 +read_format=28|31 +disabled=0 +inherit=1 +mmap=0 +comm=0 +freq=0 +enable_on_exec=0 +task=0 diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index da0bada62140..b221459439b8 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1148,7 +1148,7 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts, bool per_cpu = opts->target.default_per_cpu && !opts->target.per_thread; attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1; - attr->inherit = !opts->no_inherit; + attr->inherit = target__has_cpu(&opts->target) ? 0 : !opts->no_inherit; attr->write_backward = opts->overwrite ? 1 : 0; attr->read_format = PERF_FORMAT_LOST; @@ -1170,7 +1170,15 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts, */ if (leader->core.nr_members > 1) { attr->read_format |= PERF_FORMAT_GROUP; - attr->inherit = 0; + } + + /* + * Inherit + SAMPLE_READ requires SAMPLE_TID in the read_format + */ + if (attr->inherit) { + evsel__set_sample_bit(evsel, TID); + evsel->core.attr.read_format |= + PERF_FORMAT_ID; } } @@ -2104,6 +2112,8 @@ static int __evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, static void evsel__disable_missing_features(struct evsel *evsel) { + if (perf_missing_features.inherit_sample_read) + evsel->core.attr.inherit = 0; if (perf_missing_features.branch_counters) evsel->core.attr.branch_sample_type &= ~PERF_SAMPLE_BRANCH_COUNTERS; if (perf_missing_features.read_lost) @@ -2159,7 +2169,12 @@ bool evsel__detect_missing_features(struct evsel *evsel) * Must probe features in the order they were added to the * perf_event_attr interface. */ - if (!perf_missing_features.branch_counters && + if (!perf_missing_features.inherit_sample_read && + evsel->core.attr.inherit && (evsel->core.attr.sample_type & PERF_SAMPLE_READ)) { + perf_missing_features.inherit_sample_read = true; + pr_debug2("Using PERF_SAMPLE_READ / :S modifier is not compatible with inherit, falling back to no-inherit.\n"); + return true; + } else if (!perf_missing_features.branch_counters && (evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS)) { perf_missing_features.branch_counters = true; pr_debug2("switching off branch counters support\n"); diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 3e751ea769ac..bd08d94d3f8a 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -221,6 +221,7 @@ struct perf_missing_features { bool weight_struct; bool read_lost; bool branch_counters; + bool inherit_sample_read; }; extern struct perf_missing_features perf_missing_features; -- cgit v1.2.3 From 5873de90315a13d211b1d50a1ba97f21a6f17516 Mon Sep 17 00:00:00 2001 From: Thomas Richter Date: Tue, 1 Oct 2024 14:42:23 +0200 Subject: perf/test: perf test 86 fails on s390 Command perf test 86 fails on s390: # perf test -F 86 ping 868299 [007] 28248.013596: probe_libc:inet_pton_1: (3ff95948020) 3ff95948020 inet_pton+0x0 (inlined) 3ff9595e6e7 text_to_binary_address+0x1007 (inlined) 3ff9595e6e7 gaih_inet+0x1007 (inlined) FAIL: expected backtrace entry \ "main\+0x[[:xdigit:]]+[[:space:]]\(.*/bin/ping.*\)$" got "3ff9595e6e7 gaih_inet+0x1007 (inlined)" 86: probe libc's inet_pton & backtrace it with ping : FAILED! # The root cause is a new stack layout, two functions have been added as seen below. # perf script | tac | grep -m1 '^ping' -B9 | tac ping 866856 [007] 25979.494921: probe_libc:inet_pton: (3ff8ec48020) 3ff8ec48020 inet_pton+0x0 (inlined) new --> 3ff8ec5e6e7 text_to_binary_address+0x1007 (inlined) new --> 3ff8ec5e6e7 gaih_inet+0x1007 (inlined) 3ff8ec5e6e7 getaddrinfo+0x1007 (/usr/lib64/libc.so.6) 2aa3fe04bf5 main+0xff5 (/usr/bin/ping) 3ff8eb34a5b __libc_start_call_main+0x8b (/usr/lib64/libc.so.6) 3ff8eb34b5d __libc_start_main@GLIBC_2.2+0xad (inlined) 2aa3fe06a1f [unknown] (/usr/bin/ping) # The new functions in the call chain are: - text_to_binary_address() - gaih_inet(). Both functions are inlined and do not show up in the output of the nm command: # nm -a /usr/lib64/libc.so.6 | \ grep -E '(text_to_binary_address|gaih_inet)$' # There is no possibility to add these 2 functions depending on their existance in the C library. Add text_to_binary_address() and gaih_inet() to the list of expected functions in an compatible way and extend the regular expression. On s390 the backtrace can now be Before After probe_libc:inet_pton probe_libc:inet_pton inet_pton inet_pton getaddrinfo getaddrinfo | text_to_binary_address main main | gaih_inet Output after: # perf test -F 86 86: probe libc's inet_pton & backtrace it with ping : Ok # Signed-off-by: Thomas Richter Cc: agordeev@linux.ibm.com Cc: gor@linux.ibm.com Cc: hca@linux.ibm.com Cc: sumanthk@linux.ibm.com Link: https://lore.kernel.org/r/20241001124224.3370306-1-tmricht@linux.ibm.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/record+probe_libc_inet_pton.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh index f38c8ead0b03..47a26f25db9f 100755 --- a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh +++ b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh @@ -40,8 +40,8 @@ trace_libc_inet_pton_backtrace() { case "$(uname -m)" in s390x) eventattr='call-graph=dwarf,max-stack=4' - echo "(__GI_)?getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc|inlined\)$" >> $expected - echo "main\+0x[[:xdigit:]]+[[:space:]]\(.*/bin/ping.*\)$" >> $expected + echo "((__GI_)?getaddrinfo|text_to_binary_address)\+0x[[:xdigit:]]+[[:space:]]\($libc|inlined\)$" >> $expected + echo "(gaih_inet|main)\+0x[[:xdigit:]]+[[:space:]]\(inlined|.*/bin/ping.*\)$" >> $expected ;; ppc64|ppc64le) eventattr='max-stack=4' -- cgit v1.2.3 From d29d92df410e2fb523f640478b18f70c1823e55e Mon Sep 17 00:00:00 2001 From: Michael Petlan Date: Fri, 27 Sep 2024 17:19:26 +0200 Subject: perf trace: Keep exited threads for summary Since 9ffa6c7512ca ("perf machine thread: Remove exited threads by default") perf cleans exited threads up, but as said, sometimes they are necessary to be kept. The mentioned commit does not cover all the cases, we also need the information to construct the summary table in perf-trace. Before: # perf trace -s true Summary of events: After: # perf trace -s -- true Summary of events: true (383382), 64 events, 91.4% syscall calls errors total min avg max stddev (msec) (msec) (msec) (msec) (%) --------------- -------- ------ -------- --------- --------- --------- ------ mmap 8 0 0.150 0.013 0.019 0.031 11.90% mprotect 3 0 0.045 0.014 0.015 0.017 6.47% openat 2 0 0.014 0.006 0.007 0.007 9.73% munmap 1 0 0.009 0.009 0.009 0.009 0.00% access 1 1 0.009 0.009 0.009 0.009 0.00% pread64 4 0 0.006 0.001 0.001 0.002 4.53% fstat 2 0 0.005 0.001 0.002 0.003 37.59% arch_prctl 2 1 0.003 0.001 0.002 0.002 25.91% read 1 0 0.003 0.003 0.003 0.003 0.00% close 2 0 0.003 0.001 0.001 0.001 3.86% brk 1 0 0.002 0.002 0.002 0.002 0.00% rseq 1 0 0.001 0.001 0.001 0.001 0.00% prlimit64 1 0 0.001 0.001 0.001 0.001 0.00% set_robust_list 1 0 0.001 0.001 0.001 0.001 0.00% set_tid_address 1 0 0.001 0.001 0.001 0.001 0.00% execve 1 0 0.000 0.000 0.000 0.000 0.00% [namhyung: simplified the condition] Fixes: 9ffa6c7512ca ("perf machine thread: Remove exited threads by default") Reported-by: Veronika Molnarova Signed-off-by: Michael Petlan Link: https://lore.kernel.org/r/20240927151926.399474-1-mpetlan@redhat.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-trace.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index f6e847529073..0b30297b4ecb 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -5449,6 +5449,10 @@ init_augmented_syscall_tp: if (trace.summary_only) trace.summary = trace.summary_only; + /* Keep exited threads, otherwise information might be lost for summary */ + if (trace.summary) + symbol_conf.keep_exited_threads = true; + if (output_name != NULL) { err = trace__open_output(&trace, output_name); if (err < 0) { -- cgit v1.2.3 From 7c2f1c2690a5965fa0913c7b8c1b833dccddbb39 Mon Sep 17 00:00:00 2001 From: zhang jiao Date: Fri, 27 Sep 2024 12:00:50 +0800 Subject: selftests/net: Add missing va_end. There is no va_end after va_copy, just add it. Signed-off-by: zhang jiao Reviewed-by: Simon Horman Link: https://patch.msgid.link/20240927040050.7851-1-zhangjiao2@cmss.chinamobile.com Signed-off-by: Paolo Abeni --- tools/testing/selftests/net/tcp_ao/lib/aolib.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/testing/selftests/net/tcp_ao/lib/aolib.h b/tools/testing/selftests/net/tcp_ao/lib/aolib.h index db44e77428dd..5db2f65cddc4 100644 --- a/tools/testing/selftests/net/tcp_ao/lib/aolib.h +++ b/tools/testing/selftests/net/tcp_ao/lib/aolib.h @@ -46,6 +46,7 @@ static inline char *test_snprintf(const char *fmt, va_list vargs) va_copy(tmp, vargs); n = vsnprintf(ret, size, fmt, tmp); + va_end(tmp); if (n < 0) return NULL; -- cgit v1.2.3 From f72751a73a6b6ad678d254335e031e4511282564 Mon Sep 17 00:00:00 2001 From: Veronika Molnarova Date: Thu, 3 Oct 2024 14:51:36 +0200 Subject: perf test: Restore sample rate for perf_event_attr Test "Setup struct perf_event_attr" consists of multiple test cases that can affect the max sample rate value for perf events. Some test cases check this value as it should not be lowered under the set minimum for the given test. Currently, it is possible for the test cases to affect each other as the previous tests can lower the sample rate, leading to a possible failure of some of the future test cases as the value is not restored at any point. # 10: Setup struct perf_event_attr: --- start --- test child forked, pid 104220 Using CPUID 0x00000000413fd0c1 running './tests/attr/test-record-C0' Current sample rate: 10000 running './tests/attr/test-record-basic' Current sample rate: 900 running './tests/attr/test-record-branch-any' Current sample rate: 600 running './tests/attr/test-record-dummy-C0' Current sample rate: 600 expected sample_period=4000, got 600 FAILED './tests/attr/test-record-dummy-C0' - match failure Restore the max sample rate value for perf events to a reasonable value before each test case if its value was lowered too much to ensure the same conditions for each test case. # 10: Setup struct perf_event_attr: --- start --- test child forked, pid 107222 Using CPUID 0x00000000413fd0c1 running './tests/attr/test-record-C0' Current sample rate: 10000 running './tests/attr/test-record-basic' Current sample rate: 800 running './tests/attr/test-record-branch-any' Current sample rate: 700 unsupp './tests/attr/test-record-branch-any' running './tests/attr/test-record-branch-filter-any' Current sample rate: 10000 running './tests/attr/test-record-count' Current sample rate: 10000 running './tests/attr/test-record-data' Current sample rate: 600 running './tests/attr/test-record-dummy-C0' Current sample rate: 800 running './tests/attr/test-record-freq' Current sample rate: 10000 ... Cc: Michael Petlan Cc: Radostin Stoyanov Signed-off-by: Veronika Molnarova Link: https://lore.kernel.org/r/20241003125136.15918-1-vmolnaro@redhat.com Signed-off-by: Namhyung Kim --- tools/perf/tests/attr.py | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'tools') diff --git a/tools/perf/tests/attr.py b/tools/perf/tests/attr.py index e890c261ad26..3db9a7d78715 100644 --- a/tools/perf/tests/attr.py +++ b/tools/perf/tests/attr.py @@ -246,6 +246,23 @@ class Test(object): return False return True + def restore_sample_rate(self, value=10000): + try: + # Check value of sample_rate + with open("/proc/sys/kernel/perf_event_max_sample_rate", "r") as fIn: + curr_value = fIn.readline() + # If too low restore to reasonable value + if not curr_value or int(curr_value) < int(value): + with open("/proc/sys/kernel/perf_event_max_sample_rate", "w") as fOut: + fOut.write(str(value)) + + except IOError as e: + log.warning("couldn't restore sample_rate value: I/O error %s" % e) + except ValueError as e: + log.warning("couldn't restore sample_rate value: Value error %s" % e) + except TypeError as e: + log.warning("couldn't restore sample_rate value: Type error %s" % e) + def load_events(self, path, events): parser_event = configparser.ConfigParser() parser_event.read(path) @@ -283,6 +300,7 @@ class Test(object): if self.skip_test_kernel_until(): raise Notest(self, "new kernel skip") + self.restore_sample_rate() cmd = "PERF_TEST_ATTR=%s %s %s -o %s/perf.data %s" % (tempdir, self.perf, self.command, tempdir, self.args) ret = os.WEXITSTATUS(os.system(cmd)) -- cgit v1.2.3 From f7ef062fe154a4249663ba87d8ffab47519033cf Mon Sep 17 00:00:00 2001 From: Yoshihiro Furudera Date: Thu, 3 Oct 2024 00:24:04 +0000 Subject: perf list: update option desc in man page There is a difference between the SYNOPSIS section of the help message and the man page (tools/perf/Documentation/perf-list.txt) for the perf list command. After checking, we found that the help message reflected the latest specifications. Therefore, revised the SYNOPSIS section of the man page to match the help message. Signed-off-by: Yoshihiro Furudera Cc: Ravi Bangoria Cc: Weilin Wang Cc: Liang Link: https://lore.kernel.org/r/20241003002404.2592094-1-fj5100bi@fujitsu.com Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-list.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt index dea005410ec0..14621f39b375 100644 --- a/tools/perf/Documentation/perf-list.txt +++ b/tools/perf/Documentation/perf-list.txt @@ -8,7 +8,7 @@ perf-list - List all symbolic event types SYNOPSIS -------- [verse] -'perf list' [--no-desc] [--long-desc] +'perf list' [] [hw|sw|cache|tracepoint|pmu|sdt|metric|metricgroup|event_glob] DESCRIPTION -- cgit v1.2.3 From 0ca2c45404eed3b6bb80d3169bf672b09cf3a70d Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:42:58 +0100 Subject: perf arm-spe: Define metadata header version 2 The first version's metadata header structure doesn't include a field to indicate a header version, which is not friendly for extension. Define the metadata version 2 format with a new header structure and extend per CPU's metadata. In the meantime, the old metadata header will still be supported for backward compatibility. Signed-off-by: Leo Yan Reviewed-by: James Clark Cc: Will Deacon Cc: Mike Leach Cc: linux-arm-kernel@lists.infradead.org Cc: Besar Wicaksono Cc: John Garry Link: https://lore.kernel.org/r/20241003184302.190806-2-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/arch/arm64/util/arm-spe.c | 4 ++-- tools/perf/util/arm-spe.c | 2 +- tools/perf/util/arm-spe.h | 38 +++++++++++++++++++++++++++++++++++- 3 files changed, 40 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c index 59a85e6f3aa3..93c259092071 100644 --- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -41,7 +41,7 @@ static size_t arm_spe_info_priv_size(struct auxtrace_record *itr __maybe_unused, struct evlist *evlist __maybe_unused) { - return ARM_SPE_AUXTRACE_PRIV_SIZE; + return ARM_SPE_AUXTRACE_V1_PRIV_SIZE; } static int arm_spe_info_fill(struct auxtrace_record *itr, @@ -53,7 +53,7 @@ static int arm_spe_info_fill(struct auxtrace_record *itr, container_of(itr, struct arm_spe_recording, itr); struct perf_pmu *arm_spe_pmu = sper->arm_spe_pmu; - if (priv_size != ARM_SPE_AUXTRACE_PRIV_SIZE) + if (priv_size != ARM_SPE_AUXTRACE_V1_PRIV_SIZE) return -EINVAL; if (!session->evlist->core.nr_mmaps) diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 138ffc71b32d..70989b1bae47 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -1262,7 +1262,7 @@ int arm_spe_process_auxtrace_info(union perf_event *event, struct perf_session *session) { struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info; - size_t min_sz = sizeof(u64) * ARM_SPE_AUXTRACE_PRIV_MAX; + size_t min_sz = ARM_SPE_AUXTRACE_V1_PRIV_SIZE; struct perf_record_time_conv *tc = &session->time_conv; const char *cpuid = perf_env__cpuid(session->evlist->env); u64 midr = strtol(cpuid, NULL, 16); diff --git a/tools/perf/util/arm-spe.h b/tools/perf/util/arm-spe.h index 4f4900c18f3e..390679a4af2f 100644 --- a/tools/perf/util/arm-spe.h +++ b/tools/perf/util/arm-spe.h @@ -12,10 +12,46 @@ enum { ARM_SPE_PMU_TYPE, ARM_SPE_PER_CPU_MMAPS, + ARM_SPE_AUXTRACE_V1_PRIV_MAX, +}; + +#define ARM_SPE_AUXTRACE_V1_PRIV_SIZE \ + (ARM_SPE_AUXTRACE_V1_PRIV_MAX * sizeof(u64)) + +enum { + /* + * The old metadata format (defined above) does not include a + * field for version number. Version 1 is reserved and starts + * from version 2. + */ + ARM_SPE_HEADER_VERSION, + /* Number of sizeof(u64) */ + ARM_SPE_HEADER_SIZE, + /* PMU type shared by CPUs */ + ARM_SPE_PMU_TYPE_V2, + /* Number of CPUs */ + ARM_SPE_CPUS_NUM, ARM_SPE_AUXTRACE_PRIV_MAX, }; -#define ARM_SPE_AUXTRACE_PRIV_SIZE (ARM_SPE_AUXTRACE_PRIV_MAX * sizeof(u64)) +enum { + /* Magic number */ + ARM_SPE_MAGIC, + /* CPU logical number in system */ + ARM_SPE_CPU, + /* Number of parameters */ + ARM_SPE_CPU_NR_PARAMS, + /* CPU MIDR */ + ARM_SPE_CPU_MIDR, + /* Associated PMU type */ + ARM_SPE_CPU_PMU_TYPE, + /* Minimal interval */ + ARM_SPE_CAP_MIN_IVAL, + ARM_SPE_CPU_PRIV_MAX, +}; + +#define ARM_SPE_HEADER_CURRENT_VERSION 2 + union perf_event; struct perf_session; -- cgit v1.2.3 From 59715b1908b051fa3e4c0efb8a3724786d98bc48 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:42:59 +0100 Subject: perf arm-spe: Calculate meta data size The metadata is designed to contain a header and per CPU information. The arm_spe_find_cpus() function is introduced to identify how many CPUs support ARM SPE. Based on the CPU number, calculates the metadata size. Signed-off-by: Leo Yan Reviewed-by: James Clark Cc: Will Deacon Cc: Mike Leach Cc: linux-arm-kernel@lists.infradead.org Cc: Besar Wicaksono Cc: John Garry Link: https://lore.kernel.org/r/20241003184302.190806-3-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/arch/arm64/util/arm-spe.c | 39 +++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c index 93c259092071..cc927d88a615 100644 --- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -37,11 +37,44 @@ struct arm_spe_recording { bool *wrapped; }; +/* + * arm_spe_find_cpus() returns a new cpu map, and the caller should invoke + * perf_cpu_map__put() to release the map after use. + */ +static struct perf_cpu_map *arm_spe_find_cpus(struct evlist *evlist) +{ + struct perf_cpu_map *event_cpus = evlist->core.user_requested_cpus; + struct perf_cpu_map *online_cpus = perf_cpu_map__new_online_cpus(); + struct perf_cpu_map *intersect_cpus; + + /* cpu map is not "any" CPU , we have specific CPUs to work with */ + if (!perf_cpu_map__has_any_cpu(event_cpus)) { + intersect_cpus = perf_cpu_map__intersect(event_cpus, online_cpus); + perf_cpu_map__put(online_cpus); + /* Event can be "any" CPU so count all CPUs. */ + } else { + intersect_cpus = online_cpus; + } + + return intersect_cpus; +} + static size_t arm_spe_info_priv_size(struct auxtrace_record *itr __maybe_unused, - struct evlist *evlist __maybe_unused) + struct evlist *evlist) { - return ARM_SPE_AUXTRACE_V1_PRIV_SIZE; + struct perf_cpu_map *cpu_map = arm_spe_find_cpus(evlist); + size_t size; + + if (!cpu_map) + return 0; + + size = ARM_SPE_AUXTRACE_PRIV_MAX + + ARM_SPE_CPU_PRIV_MAX * perf_cpu_map__nr(cpu_map); + size *= sizeof(u64); + + perf_cpu_map__put(cpu_map); + return size; } static int arm_spe_info_fill(struct auxtrace_record *itr, @@ -53,7 +86,7 @@ static int arm_spe_info_fill(struct auxtrace_record *itr, container_of(itr, struct arm_spe_recording, itr); struct perf_pmu *arm_spe_pmu = sper->arm_spe_pmu; - if (priv_size != ARM_SPE_AUXTRACE_V1_PRIV_SIZE) + if (priv_size != arm_spe_info_priv_size(itr, session->evlist)) return -EINVAL; if (!session->evlist->core.nr_mmaps) -- cgit v1.2.3 From 703f344d0c4a3a006d3e1466d38ee6d8791acd87 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:43:00 +0100 Subject: perf arm-spe: Save per CPU information in metadata Save the Arm SPE information on a per-CPU basis. This approach is easier in the decoding phase for retrieving metadata based on the CPU number of every Arm SPE record. Signed-off-by: Leo Yan Reviewed-by: James Clark Cc: Will Deacon Cc: Mike Leach Cc: linux-arm-kernel@lists.infradead.org Cc: Besar Wicaksono Cc: John Garry Link: https://lore.kernel.org/r/20241003184302.190806-4-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/arch/arm64/util/arm-spe.c | 83 +++++++++++++++++++++++++++++++++++- 1 file changed, 81 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c index cc927d88a615..7ccdea3cd461 100644 --- a/tools/perf/arch/arm64/util/arm-spe.c +++ b/tools/perf/arch/arm64/util/arm-spe.c @@ -26,6 +26,8 @@ #include "../../../util/arm-spe.h" #include // reallocarray +#define ARM_SPE_CPU_MAGIC 0x1010101010101010ULL + #define KiB(x) ((x) * 1024) #define MiB(x) ((x) * 1024 * 1024) @@ -77,14 +79,70 @@ arm_spe_info_priv_size(struct auxtrace_record *itr __maybe_unused, return size; } +static int arm_spe_save_cpu_header(struct auxtrace_record *itr, + struct perf_cpu cpu, __u64 data[]) +{ + struct arm_spe_recording *sper = + container_of(itr, struct arm_spe_recording, itr); + struct perf_pmu *pmu = NULL; + struct perf_pmu tmp_pmu; + char cpu_id_str[16]; + char *cpuid = NULL; + u64 val; + + snprintf(cpu_id_str, sizeof(cpu_id_str), "%d", cpu.cpu); + tmp_pmu.cpus = perf_cpu_map__new(cpu_id_str); + if (!tmp_pmu.cpus) + return -ENOMEM; + + /* Read CPU MIDR */ + cpuid = perf_pmu__getcpuid(&tmp_pmu); + + /* The CPU map will not be used anymore, release it */ + perf_cpu_map__put(tmp_pmu.cpus); + + if (!cpuid) + return -ENOMEM; + val = strtol(cpuid, NULL, 16); + + data[ARM_SPE_MAGIC] = ARM_SPE_CPU_MAGIC; + data[ARM_SPE_CPU] = cpu.cpu; + data[ARM_SPE_CPU_NR_PARAMS] = ARM_SPE_CPU_PRIV_MAX - ARM_SPE_CPU_MIDR; + data[ARM_SPE_CPU_MIDR] = val; + + /* Find the associate Arm SPE PMU for the CPU */ + if (perf_cpu_map__has(sper->arm_spe_pmu->cpus, cpu)) + pmu = sper->arm_spe_pmu; + + if (!pmu) { + /* No Arm SPE PMU is found */ + data[ARM_SPE_CPU_PMU_TYPE] = ULLONG_MAX; + data[ARM_SPE_CAP_MIN_IVAL] = 0; + } else { + data[ARM_SPE_CPU_PMU_TYPE] = pmu->type; + + if (perf_pmu__scan_file(pmu, "caps/min_interval", "%lu", &val) != 1) + val = 0; + data[ARM_SPE_CAP_MIN_IVAL] = val; + } + + free(cpuid); + return ARM_SPE_CPU_PRIV_MAX; +} + static int arm_spe_info_fill(struct auxtrace_record *itr, struct perf_session *session, struct perf_record_auxtrace_info *auxtrace_info, size_t priv_size) { + int i, ret; + size_t offset; struct arm_spe_recording *sper = container_of(itr, struct arm_spe_recording, itr); struct perf_pmu *arm_spe_pmu = sper->arm_spe_pmu; + struct perf_cpu_map *cpu_map; + struct perf_cpu cpu; + __u64 *data; if (priv_size != arm_spe_info_priv_size(itr, session->evlist)) return -EINVAL; @@ -92,10 +150,31 @@ static int arm_spe_info_fill(struct auxtrace_record *itr, if (!session->evlist->core.nr_mmaps) return -EINVAL; + cpu_map = arm_spe_find_cpus(session->evlist); + if (!cpu_map) + return -EINVAL; + auxtrace_info->type = PERF_AUXTRACE_ARM_SPE; - auxtrace_info->priv[ARM_SPE_PMU_TYPE] = arm_spe_pmu->type; + auxtrace_info->priv[ARM_SPE_HEADER_VERSION] = ARM_SPE_HEADER_CURRENT_VERSION; + auxtrace_info->priv[ARM_SPE_HEADER_SIZE] = + ARM_SPE_AUXTRACE_PRIV_MAX - ARM_SPE_HEADER_VERSION; + auxtrace_info->priv[ARM_SPE_PMU_TYPE_V2] = arm_spe_pmu->type; + auxtrace_info->priv[ARM_SPE_CPUS_NUM] = perf_cpu_map__nr(cpu_map); + + offset = ARM_SPE_AUXTRACE_PRIV_MAX; + perf_cpu_map__for_each_cpu(cpu, i, cpu_map) { + assert(offset < priv_size); + data = &auxtrace_info->priv[offset]; + ret = arm_spe_save_cpu_header(itr, cpu, data); + if (ret < 0) + goto out; + offset += ret; + } - return 0; + ret = 0; +out: + perf_cpu_map__put(cpu_map); + return ret; } static void -- cgit v1.2.3 From 7842a4b6ff698768ccdb13324c3902a069b5d5dd Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:43:01 +0100 Subject: perf arm-spe: Support metadata version 2 This commit is to support metadata version 2 and at the meantime it is backward compatible for version 1's format. The metadata version 1 doesn't include the ARM_SPE_HEADER_VERSION field. As version 1 is fixed with two u64 fields, by checking the metadata size, it distinguishes the metadata is version 1 or version 2 (and any new versions if later will have). For version 2, it reads out CPU number and retrieves the metadata info for every CPU. Signed-off-by: Leo Yan Reviewed-by: James Clark Cc: Will Deacon Cc: Mike Leach Cc: linux-arm-kernel@lists.infradead.org Cc: Besar Wicaksono Cc: John Garry Link: https://lore.kernel.org/r/20241003184302.190806-5-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 99 +++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 95 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 70989b1bae47..8b2af1c7dc9b 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -78,6 +78,10 @@ struct arm_spe { unsigned long num_events; u8 use_ctx_pkt_for_pid; + + u64 **metadata; + u64 metadata_ver; + u64 metadata_nr_cpu; }; struct arm_spe_queue { @@ -1016,6 +1020,73 @@ static int arm_spe_flush(struct perf_session *session __maybe_unused, return 0; } +static u64 *arm_spe__alloc_per_cpu_metadata(u64 *buf, int per_cpu_size) +{ + u64 *metadata; + + metadata = zalloc(per_cpu_size); + if (!metadata) + return NULL; + + memcpy(metadata, buf, per_cpu_size); + return metadata; +} + +static void arm_spe__free_metadata(u64 **metadata, int nr_cpu) +{ + int i; + + for (i = 0; i < nr_cpu; i++) + zfree(&metadata[i]); + free(metadata); +} + +static u64 **arm_spe__alloc_metadata(struct perf_record_auxtrace_info *info, + u64 *ver, int *nr_cpu) +{ + u64 *ptr = (u64 *)info->priv; + u64 metadata_size; + u64 **metadata = NULL; + int hdr_sz, per_cpu_sz, i; + + metadata_size = info->header.size - + sizeof(struct perf_record_auxtrace_info); + + /* Metadata version 1 */ + if (metadata_size == ARM_SPE_AUXTRACE_V1_PRIV_SIZE) { + *ver = 1; + *nr_cpu = 0; + /* No per CPU metadata */ + return NULL; + } + + *ver = ptr[ARM_SPE_HEADER_VERSION]; + hdr_sz = ptr[ARM_SPE_HEADER_SIZE]; + *nr_cpu = ptr[ARM_SPE_CPUS_NUM]; + + metadata = calloc(*nr_cpu, sizeof(*metadata)); + if (!metadata) + return NULL; + + /* Locate the start address of per CPU metadata */ + ptr += hdr_sz; + per_cpu_sz = (metadata_size - (hdr_sz * sizeof(u64))) / (*nr_cpu); + + for (i = 0; i < *nr_cpu; i++) { + metadata[i] = arm_spe__alloc_per_cpu_metadata(ptr, per_cpu_sz); + if (!metadata[i]) + goto err_per_cpu_metadata; + + ptr += per_cpu_sz / sizeof(u64); + } + + return metadata; + +err_per_cpu_metadata: + arm_spe__free_metadata(metadata, *nr_cpu); + return NULL; +} + static void arm_spe_free_queue(void *priv) { struct arm_spe_queue *speq = priv; @@ -1050,6 +1121,7 @@ static void arm_spe_free(struct perf_session *session) auxtrace_heap__free(&spe->heap); arm_spe_free_events(session); session->auxtrace = NULL; + arm_spe__free_metadata(spe->metadata, spe->metadata_nr_cpu); free(spe); } @@ -1267,15 +1339,26 @@ int arm_spe_process_auxtrace_info(union perf_event *event, const char *cpuid = perf_env__cpuid(session->evlist->env); u64 midr = strtol(cpuid, NULL, 16); struct arm_spe *spe; - int err; + u64 **metadata = NULL; + u64 metadata_ver; + int nr_cpu, err; if (auxtrace_info->header.size < sizeof(struct perf_record_auxtrace_info) + min_sz) return -EINVAL; + metadata = arm_spe__alloc_metadata(auxtrace_info, &metadata_ver, + &nr_cpu); + if (!metadata && metadata_ver != 1) { + pr_err("Failed to parse Arm SPE metadata.\n"); + return -EINVAL; + } + spe = zalloc(sizeof(struct arm_spe)); - if (!spe) - return -ENOMEM; + if (!spe) { + err = -ENOMEM; + goto err_free_metadata; + } err = auxtrace_queues__init(&spe->queues); if (err) @@ -1284,8 +1367,14 @@ int arm_spe_process_auxtrace_info(union perf_event *event, spe->session = session; spe->machine = &session->machines.host; /* No kvm support */ spe->auxtrace_type = auxtrace_info->type; - spe->pmu_type = auxtrace_info->priv[ARM_SPE_PMU_TYPE]; + if (metadata_ver == 1) + spe->pmu_type = auxtrace_info->priv[ARM_SPE_PMU_TYPE]; + else + spe->pmu_type = auxtrace_info->priv[ARM_SPE_PMU_TYPE_V2]; spe->midr = midr; + spe->metadata = metadata; + spe->metadata_ver = metadata_ver; + spe->metadata_nr_cpu = nr_cpu; spe->timeless_decoding = arm_spe__is_timeless_decoding(spe); @@ -1346,5 +1435,7 @@ err_free_queues: session->auxtrace = NULL; err_free: free(spe); +err_free_metadata: + arm_spe__free_metadata(metadata, nr_cpu); return err; } -- cgit v1.2.3 From e52abceb4b6c2723c7e49388e67a32ffb47bd90c Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:43:02 +0100 Subject: perf arm-spe: Dump metadata with version 2 This commit dumps metadata with version 2. It dumps metadata for header and per CPU data respectively in the arm_spe_print_info() function to support metadata version 2 format. After: 0 0 0x3c0 [0x1b0]: PERF_RECORD_AUXTRACE_INFO type: 4 Header version :2 Header size :4 PMU type v2 :13 CPU number :8 Magic :0x1010101010101010 CPU # :0 Num of params :3 MIDR :0x410fd801 PMU Type :-1 Min Interval :0 Magic :0x1010101010101010 CPU # :1 Num of params :3 MIDR :0x410fd801 PMU Type :-1 Min Interval :0 Magic :0x1010101010101010 CPU # :2 Num of params :3 MIDR :0x410fd870 PMU Type :13 Min Interval :1024 Magic :0x1010101010101010 CPU # :3 Num of params :3 MIDR :0x410fd870 PMU Type :13 Min Interval :1024 Magic :0x1010101010101010 CPU # :4 Num of params :3 MIDR :0x410fd870 PMU Type :13 Min Interval :1024 Magic :0x1010101010101010 CPU # :5 Num of params :3 MIDR :0x410fd870 PMU Type :13 Min Interval :1024 Magic :0x1010101010101010 CPU # :6 Num of params :3 MIDR :0x410fd850 PMU Type :-1 Min Interval :0 Magic :0x1010101010101010 CPU # :7 Num of params :3 MIDR :0x410fd850 PMU Type :-1 Min Interval :0 Signed-off-by: Leo Yan Reviewed-by: James Clark Cc: Will Deacon Cc: Mike Leach Cc: linux-arm-kernel@lists.infradead.org Cc: Besar Wicaksono Cc: John Garry Link: https://lore.kernel.org/r/20241003184302.190806-6-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 54 ++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 49 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 8b2af1c7dc9b..13fd2c8afebd 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -1133,16 +1133,60 @@ static bool arm_spe_evsel_is_auxtrace(struct perf_session *session, return evsel->core.attr.type == spe->pmu_type; } -static const char * const arm_spe_info_fmts[] = { - [ARM_SPE_PMU_TYPE] = " PMU Type %"PRId64"\n", +static const char * const metadata_hdr_v1_fmts[] = { + [ARM_SPE_PMU_TYPE] = " PMU Type :%"PRId64"\n", + [ARM_SPE_PER_CPU_MMAPS] = " Per CPU mmaps :%"PRId64"\n", }; -static void arm_spe_print_info(__u64 *arr) +static const char * const metadata_hdr_fmts[] = { + [ARM_SPE_HEADER_VERSION] = " Header version :%"PRId64"\n", + [ARM_SPE_HEADER_SIZE] = " Header size :%"PRId64"\n", + [ARM_SPE_PMU_TYPE_V2] = " PMU type v2 :%"PRId64"\n", + [ARM_SPE_CPUS_NUM] = " CPU number :%"PRId64"\n", +}; + +static const char * const metadata_per_cpu_fmts[] = { + [ARM_SPE_MAGIC] = " Magic :0x%"PRIx64"\n", + [ARM_SPE_CPU] = " CPU # :%"PRId64"\n", + [ARM_SPE_CPU_NR_PARAMS] = " Num of params :%"PRId64"\n", + [ARM_SPE_CPU_MIDR] = " MIDR :0x%"PRIx64"\n", + [ARM_SPE_CPU_PMU_TYPE] = " PMU Type :%"PRId64"\n", + [ARM_SPE_CAP_MIN_IVAL] = " Min Interval :%"PRId64"\n", +}; + +static void arm_spe_print_info(struct arm_spe *spe, __u64 *arr) { + unsigned int i, cpu, hdr_size, cpu_num, cpu_size; + const char * const *hdr_fmts; + if (!dump_trace) return; - fprintf(stdout, arm_spe_info_fmts[ARM_SPE_PMU_TYPE], arr[ARM_SPE_PMU_TYPE]); + if (spe->metadata_ver == 1) { + cpu_num = 0; + hdr_size = ARM_SPE_AUXTRACE_V1_PRIV_MAX; + hdr_fmts = metadata_hdr_v1_fmts; + } else { + cpu_num = arr[ARM_SPE_CPUS_NUM]; + hdr_size = arr[ARM_SPE_HEADER_SIZE]; + hdr_fmts = metadata_hdr_fmts; + } + + for (i = 0; i < hdr_size; i++) + fprintf(stdout, hdr_fmts[i], arr[i]); + + arr += hdr_size; + for (cpu = 0; cpu < cpu_num; cpu++) { + /* + * The parameters from ARM_SPE_MAGIC to ARM_SPE_CPU_NR_PARAMS + * are fixed. The sequential parameter size is decided by the + * field 'ARM_SPE_CPU_NR_PARAMS'. + */ + cpu_size = (ARM_SPE_CPU_NR_PARAMS + 1) + arr[ARM_SPE_CPU_NR_PARAMS]; + for (i = 0; i < cpu_size; i++) + fprintf(stdout, metadata_per_cpu_fmts[i], arr[i]); + arr += cpu_size; + } } static void arm_spe_set_event_name(struct evlist *evlist, u64 id, @@ -1407,7 +1451,7 @@ int arm_spe_process_auxtrace_info(union perf_event *event, spe->auxtrace.evsel_is_auxtrace = arm_spe_evsel_is_auxtrace; session->auxtrace = &spe->auxtrace; - arm_spe_print_info(&auxtrace_info->priv[0]); + arm_spe_print_info(spe, &auxtrace_info->priv[0]); if (dump_trace) return 0; -- cgit v1.2.3 From 6bff76af9635411214ca44ea38fc2781e78064b6 Mon Sep 17 00:00:00 2001 From: Veronika Molnarova Date: Mon, 11 Mar 2024 09:16:11 +0100 Subject: perf test attr: Add back missing topdown events With the patch 0b6c5371c03c "Add missing topdown metrics events" eight topdown metric events with numbers ranging from 0x8000 to 0x8700 were added to the test since they were added as 'perf stat' default events. Later the patch 951efb9976ce "Update no event/metric expectations" kept only 4 of those events(0x8000-0x8300). Currently, the topdown events with numbers 0x8400 to 0x8700 are missing from the list of expected events resulting in a failure. Add back the missing topdown events. Fixes: 951efb9976ce ("perf test attr: Update no event/metric expectations") Signed-off-by: Veronika Molnarova Tested-by: Ian Rogers Cc: mpetlan@redhat.com Link: https://lore.kernel.org/r/20240311081611.7835-1-vmolnaro@redhat.com Signed-off-by: Namhyung Kim --- tools/perf/tests/attr/test-stat-default | 90 ++++++++++++++----- tools/perf/tests/attr/test-stat-detailed-1 | 106 +++++++++++++++------- tools/perf/tests/attr/test-stat-detailed-2 | 130 ++++++++++++++++++--------- tools/perf/tests/attr/test-stat-detailed-3 | 138 +++++++++++++++++++---------- 4 files changed, 320 insertions(+), 144 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/attr/test-stat-default b/tools/perf/tests/attr/test-stat-default index a1e2da0a9a6d..e47fb4944679 100644 --- a/tools/perf/tests/attr/test-stat-default +++ b/tools/perf/tests/attr/test-stat-default @@ -88,98 +88,142 @@ enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-fe-bound (0x8200) +# PERF_TYPE_RAW / topdown-bad-spec (0x8100) [event13:base-stat] fd=13 group_fd=11 type=4 -config=33280 +config=33024 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-be-bound (0x8300) +# PERF_TYPE_RAW / topdown-fe-bound (0x8200) [event14:base-stat] fd=14 group_fd=11 type=4 -config=33536 +config=33280 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-bad-spec (0x8100) +# PERF_TYPE_RAW / topdown-be-bound (0x8300) [event15:base-stat] fd=15 group_fd=11 type=4 -config=33024 +config=33536 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING +# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) [event16:base-stat] fd=16 +group_fd=11 type=4 -config=4109 +config=33792 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ +# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) [event17:base-stat] fd=17 +group_fd=11 type=4 -config=17039629 +config=34048 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD +# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) [event18:base-stat] fd=18 +group_fd=11 type=4 -config=60 +config=34304 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY +# PERF_TYPE_RAW / topdown-mem-bound (0x8700) [event19:base-stat] fd=19 +group_fd=11 type=4 -config=2097421 +config=34560 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK +# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING [event20:base-stat] fd=20 type=4 -config=316 +config=4109 optional=1 -# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ [event21:base-stat] fd=21 type=4 -config=412 +config=17039629 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD [event22:base-stat] fd=22 type=4 -config=572 +config=60 optional=1 -# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY [event23:base-stat] fd=23 type=4 -config=706 +config=2097421 optional=1 -# PERF_TYPE_RAW / UOPS_ISSUED.ANY +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK [event24:base-stat] fd=24 type=4 +config=316 +optional=1 + +# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +[event25:base-stat] +fd=25 +type=4 +config=412 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +[event26:base-stat] +fd=26 +type=4 +config=572 +optional=1 + +# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +[event27:base-stat] +fd=27 +type=4 +config=706 +optional=1 + +# PERF_TYPE_RAW / UOPS_ISSUED.ANY +[event28:base-stat] +fd=28 +type=4 config=270 optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-1 b/tools/perf/tests/attr/test-stat-detailed-1 index 1c52cb05c900..3d500d3e0c5c 100644 --- a/tools/perf/tests/attr/test-stat-detailed-1 +++ b/tools/perf/tests/attr/test-stat-detailed-1 @@ -90,99 +90,143 @@ enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-fe-bound (0x8200) +# PERF_TYPE_RAW / topdown-bad-spec (0x8100) [event13:base-stat] fd=13 group_fd=11 type=4 -config=33280 +config=33024 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-be-bound (0x8300) +# PERF_TYPE_RAW / topdown-fe-bound (0x8200) [event14:base-stat] fd=14 group_fd=11 type=4 -config=33536 +config=33280 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-bad-spec (0x8100) +# PERF_TYPE_RAW / topdown-be-bound (0x8300) [event15:base-stat] fd=15 group_fd=11 type=4 -config=33024 +config=33536 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING +# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) [event16:base-stat] fd=16 +group_fd=11 type=4 -config=4109 +config=33792 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ +# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) [event17:base-stat] fd=17 +group_fd=11 type=4 -config=17039629 +config=34048 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD +# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) [event18:base-stat] fd=18 +group_fd=11 type=4 -config=60 +config=34304 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY +# PERF_TYPE_RAW / topdown-mem-bound (0x8700) [event19:base-stat] fd=19 +group_fd=11 type=4 -config=2097421 +config=34560 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK +# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING [event20:base-stat] fd=20 type=4 -config=316 +config=4109 optional=1 -# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ [event21:base-stat] fd=21 type=4 -config=412 +config=17039629 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD [event22:base-stat] fd=22 type=4 -config=572 +config=60 optional=1 -# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY [event23:base-stat] fd=23 type=4 -config=706 +config=2097421 optional=1 -# PERF_TYPE_RAW / UOPS_ISSUED.ANY +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK [event24:base-stat] fd=24 type=4 +config=316 +optional=1 + +# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +[event25:base-stat] +fd=25 +type=4 +config=412 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +[event26:base-stat] +fd=26 +type=4 +config=572 +optional=1 + +# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +[event27:base-stat] +fd=27 +type=4 +config=706 +optional=1 + +# PERF_TYPE_RAW / UOPS_ISSUED.ANY +[event28:base-stat] +fd=28 +type=4 config=270 optional=1 @@ -190,8 +234,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1D << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event25:base-stat] -fd=25 +[event29:base-stat] +fd=29 type=3 config=0 optional=1 @@ -200,8 +244,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1D << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event26:base-stat] -fd=26 +[event30:base-stat] +fd=30 type=3 config=65536 optional=1 @@ -210,8 +254,8 @@ optional=1 # PERF_COUNT_HW_CACHE_LL << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event27:base-stat] -fd=27 +[event31:base-stat] +fd=31 type=3 config=2 optional=1 @@ -220,8 +264,8 @@ optional=1 # PERF_COUNT_HW_CACHE_LL << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event28:base-stat] -fd=28 +[event32:base-stat] +fd=32 type=3 config=65538 optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-2 b/tools/perf/tests/attr/test-stat-detailed-2 index 7e961d24a885..01777a63752f 100644 --- a/tools/perf/tests/attr/test-stat-detailed-2 +++ b/tools/perf/tests/attr/test-stat-detailed-2 @@ -90,99 +90,143 @@ enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-fe-bound (0x8200) +# PERF_TYPE_RAW / topdown-bad-spec (0x8100) [event13:base-stat] fd=13 group_fd=11 type=4 -config=33280 +config=33024 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-be-bound (0x8300) +# PERF_TYPE_RAW / topdown-fe-bound (0x8200) [event14:base-stat] fd=14 group_fd=11 type=4 -config=33536 +config=33280 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-bad-spec (0x8100) +# PERF_TYPE_RAW / topdown-be-bound (0x8300) [event15:base-stat] fd=15 group_fd=11 type=4 -config=33024 +config=33536 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING +# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) [event16:base-stat] fd=16 +group_fd=11 type=4 -config=4109 +config=33792 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ +# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) [event17:base-stat] fd=17 +group_fd=11 type=4 -config=17039629 +config=34048 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD +# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) [event18:base-stat] fd=18 +group_fd=11 type=4 -config=60 +config=34304 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY +# PERF_TYPE_RAW / topdown-mem-bound (0x8700) [event19:base-stat] fd=19 +group_fd=11 type=4 -config=2097421 +config=34560 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK +# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING [event20:base-stat] fd=20 type=4 -config=316 +config=4109 optional=1 -# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ [event21:base-stat] fd=21 type=4 -config=412 +config=17039629 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD [event22:base-stat] fd=22 type=4 -config=572 +config=60 optional=1 -# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY [event23:base-stat] fd=23 type=4 -config=706 +config=2097421 optional=1 -# PERF_TYPE_RAW / UOPS_ISSUED.ANY +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK [event24:base-stat] fd=24 type=4 +config=316 +optional=1 + +# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +[event25:base-stat] +fd=25 +type=4 +config=412 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +[event26:base-stat] +fd=26 +type=4 +config=572 +optional=1 + +# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +[event27:base-stat] +fd=27 +type=4 +config=706 +optional=1 + +# PERF_TYPE_RAW / UOPS_ISSUED.ANY +[event28:base-stat] +fd=28 +type=4 config=270 optional=1 @@ -190,8 +234,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1D << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event25:base-stat] -fd=25 +[event29:base-stat] +fd=29 type=3 config=0 optional=1 @@ -200,8 +244,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1D << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event26:base-stat] -fd=26 +[event30:base-stat] +fd=30 type=3 config=65536 optional=1 @@ -210,8 +254,8 @@ optional=1 # PERF_COUNT_HW_CACHE_LL << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event27:base-stat] -fd=27 +[event31:base-stat] +fd=31 type=3 config=2 optional=1 @@ -220,8 +264,8 @@ optional=1 # PERF_COUNT_HW_CACHE_LL << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event28:base-stat] -fd=28 +[event32:base-stat] +fd=32 type=3 config=65538 optional=1 @@ -230,8 +274,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1I << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event29:base-stat] -fd=29 +[event33:base-stat] +fd=33 type=3 config=1 optional=1 @@ -240,8 +284,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1I << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event30:base-stat] -fd=30 +[event34:base-stat] +fd=34 type=3 config=65537 optional=1 @@ -250,8 +294,8 @@ optional=1 # PERF_COUNT_HW_CACHE_DTLB << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event31:base-stat] -fd=31 +[event35:base-stat] +fd=35 type=3 config=3 optional=1 @@ -260,8 +304,8 @@ optional=1 # PERF_COUNT_HW_CACHE_DTLB << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event32:base-stat] -fd=32 +[event36:base-stat] +fd=36 type=3 config=65539 optional=1 @@ -270,8 +314,8 @@ optional=1 # PERF_COUNT_HW_CACHE_ITLB << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event33:base-stat] -fd=33 +[event37:base-stat] +fd=37 type=3 config=4 optional=1 @@ -280,8 +324,8 @@ optional=1 # PERF_COUNT_HW_CACHE_ITLB << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event34:base-stat] -fd=34 +[event38:base-stat] +fd=38 type=3 config=65540 optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-3 b/tools/perf/tests/attr/test-stat-detailed-3 index e50535f45977..8400abd7e1e4 100644 --- a/tools/perf/tests/attr/test-stat-detailed-3 +++ b/tools/perf/tests/attr/test-stat-detailed-3 @@ -90,99 +90,143 @@ enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-fe-bound (0x8200) +# PERF_TYPE_RAW / topdown-bad-spec (0x8100) [event13:base-stat] fd=13 group_fd=11 type=4 -config=33280 +config=33024 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-be-bound (0x8300) +# PERF_TYPE_RAW / topdown-fe-bound (0x8200) [event14:base-stat] fd=14 group_fd=11 type=4 -config=33536 +config=33280 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / topdown-bad-spec (0x8100) +# PERF_TYPE_RAW / topdown-be-bound (0x8300) [event15:base-stat] fd=15 group_fd=11 type=4 -config=33024 +config=33536 disabled=0 enable_on_exec=0 read_format=15 optional=1 -# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING +# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) [event16:base-stat] fd=16 +group_fd=11 type=4 -config=4109 +config=33792 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ +# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) [event17:base-stat] fd=17 +group_fd=11 type=4 -config=17039629 +config=34048 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD +# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) [event18:base-stat] fd=18 +group_fd=11 type=4 -config=60 +config=34304 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY +# PERF_TYPE_RAW / topdown-mem-bound (0x8700) [event19:base-stat] fd=19 +group_fd=11 type=4 -config=2097421 +config=34560 +disabled=0 +enable_on_exec=0 +read_format=15 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK +# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING [event20:base-stat] fd=20 type=4 -config=316 +config=4109 optional=1 -# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ [event21:base-stat] fd=21 type=4 -config=412 +config=17039629 optional=1 -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD [event22:base-stat] fd=22 type=4 -config=572 +config=60 optional=1 -# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY [event23:base-stat] fd=23 type=4 -config=706 +config=2097421 optional=1 -# PERF_TYPE_RAW / UOPS_ISSUED.ANY +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK [event24:base-stat] fd=24 type=4 +config=316 +optional=1 + +# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +[event25:base-stat] +fd=25 +type=4 +config=412 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +[event26:base-stat] +fd=26 +type=4 +config=572 +optional=1 + +# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +[event27:base-stat] +fd=27 +type=4 +config=706 +optional=1 + +# PERF_TYPE_RAW / UOPS_ISSUED.ANY +[event28:base-stat] +fd=28 +type=4 config=270 optional=1 @@ -190,8 +234,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1D << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event25:base-stat] -fd=25 +[event29:base-stat] +fd=29 type=3 config=0 optional=1 @@ -200,8 +244,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1D << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event26:base-stat] -fd=26 +[event30:base-stat] +fd=30 type=3 config=65536 optional=1 @@ -210,8 +254,8 @@ optional=1 # PERF_COUNT_HW_CACHE_LL << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event27:base-stat] -fd=27 +[event31:base-stat] +fd=31 type=3 config=2 optional=1 @@ -220,8 +264,8 @@ optional=1 # PERF_COUNT_HW_CACHE_LL << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event28:base-stat] -fd=28 +[event32:base-stat] +fd=32 type=3 config=65538 optional=1 @@ -230,8 +274,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1I << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event29:base-stat] -fd=29 +[event33:base-stat] +fd=33 type=3 config=1 optional=1 @@ -240,8 +284,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1I << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event30:base-stat] -fd=30 +[event34:base-stat] +fd=34 type=3 config=65537 optional=1 @@ -250,8 +294,8 @@ optional=1 # PERF_COUNT_HW_CACHE_DTLB << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event31:base-stat] -fd=31 +[event35:base-stat] +fd=35 type=3 config=3 optional=1 @@ -260,8 +304,8 @@ optional=1 # PERF_COUNT_HW_CACHE_DTLB << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event32:base-stat] -fd=32 +[event36:base-stat] +fd=36 type=3 config=65539 optional=1 @@ -270,8 +314,8 @@ optional=1 # PERF_COUNT_HW_CACHE_ITLB << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event33:base-stat] -fd=33 +[event37:base-stat] +fd=37 type=3 config=4 optional=1 @@ -280,8 +324,8 @@ optional=1 # PERF_COUNT_HW_CACHE_ITLB << 0 | # (PERF_COUNT_HW_CACHE_OP_READ << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event34:base-stat] -fd=34 +[event38:base-stat] +fd=38 type=3 config=65540 optional=1 @@ -290,8 +334,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1D << 0 | # (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | # (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event35:base-stat] -fd=35 +[event39:base-stat] +fd=39 type=3 config=512 optional=1 @@ -300,8 +344,8 @@ optional=1 # PERF_COUNT_HW_CACHE_L1D << 0 | # (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | # (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event36:base-stat] -fd=36 +[event40:base-stat] +fd=40 type=3 config=66048 optional=1 -- cgit v1.2.3 From be4e3235445725546f25f09ace04a4237c72e071 Mon Sep 17 00:00:00 2001 From: Amit Cohen Date: Mon, 30 Sep 2024 17:12:50 +0200 Subject: selftests: mlxsw: rtnetlink: Use devlink_reload() API The test runs "devlink reload" explicitly. Instead, it is better to use devlink_reload() which waits for udev events to be processed. Do not sleep after reload, as devlink_reload() blocks until all the netdevs are renamed. Signed-off-by: Amit Cohen Reviewed-by: Ido Schimmel Signed-off-by: Petr Machata Link: https://patch.msgid.link/844509e3057b65277a7181a23c95b71ec95e8a56.1727706741.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh index 893a693ad805..45a569618424 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh @@ -186,10 +186,7 @@ bridge_vlan_flags_test() # If we did not handle references correctly, then this should produce a # trace - devlink dev reload "$DEVLINK_DEV" - - # Allow netdevices to be re-created following the reload - sleep 20 + devlink_reload log_test "bridge vlan flags" } @@ -923,12 +920,9 @@ devlink_reload_test() # devlink reload can be performed without errors RET=0 - devlink dev reload "$DEVLINK_DEV" - check_err $? "devlink reload failed" + devlink_reload log_test "devlink reload - last test" - - sleep 20 } trap cleanup EXIT -- cgit v1.2.3 From d772cc25ccf772f4cbb81270970cbe1356c23d3e Mon Sep 17 00:00:00 2001 From: Sean Anderson Date: Mon, 30 Sep 2024 12:29:34 -0400 Subject: selftests: net: csum: Clean up recv_verify_packet_ipv6 Rename ip_len to payload_len since the length in this case refers only to the payload, and not the entire IP packet like for IPv4. While we're at it, just use the variable directly when calling recv_verify_packet_udp/tcp. Signed-off-by: Sean Anderson Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20240930162935.980712-1-sean.anderson@linux.dev Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/lib/csum.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/lib/csum.c b/tools/testing/selftests/net/lib/csum.c index e0a34e5e8dd5..27437590eeb5 100644 --- a/tools/testing/selftests/net/lib/csum.c +++ b/tools/testing/selftests/net/lib/csum.c @@ -675,22 +675,20 @@ static int recv_verify_packet_ipv6(void *nh, int len) { struct ipv6hdr *ip6h = nh; uint16_t proto = cfg_encap ? IPPROTO_UDP : cfg_proto; - uint16_t ip_len; + uint16_t payload_len; if (len < sizeof(*ip6h) || ip6h->nexthdr != proto) return -1; - ip_len = ntohs(ip6h->payload_len); - if (ip_len > len - sizeof(*ip6h)) + payload_len = ntohs(ip6h->payload_len); + if (payload_len > len - sizeof(*ip6h)) return -1; - len = ip_len; iph_addr_p = &ip6h->saddr; - if (proto == IPPROTO_TCP) - return recv_verify_packet_tcp(ip6h + 1, len); + return recv_verify_packet_tcp(ip6h + 1, payload_len); else - return recv_verify_packet_udp(ip6h + 1, len); + return recv_verify_packet_udp(ip6h + 1, payload_len); } /* return whether auxdata includes TP_STATUS_CSUM_VALID */ -- cgit v1.2.3 From d002b922c4d5d695d617ec262f3e07cd62ee866e Mon Sep 17 00:00:00 2001 From: Ihor Solodrai Date: Mon, 16 Sep 2024 19:59:22 +0000 Subject: selftests/bpf: Remove test_skb_cgroup_id.sh from TEST_PROGS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit test_skb_cgroup_id.sh was deleted in https://git.kernel.org/bpf/bpf-next/c/f957c230e173 It has to be removed from TEST_PROGS variable in tools/testing/selftests/bpf/Makefile, otherwise install target fails. Signed-off-by: Ihor Solodrai Signed-off-by: Andrii Nakryiko Tested-by: Björn Töpel Link: https://lore.kernel.org/bpf/20240916195919.1872371-1-ihor.solodrai@pm.me Link: https://lore.kernel.org/bpf/Q3BN2kW9Kgy6LkrDOwnyY4Pv7_YF8fInLCd2_QA3LimKYM3wD64kRdnwp7blwG2dI_s7UGnfUae-4_dOmuTrxpYCi32G_KTzB3PfmxIerH8=@pm.me/ Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/Makefile | 1 - 1 file changed, 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index f04af11df8eb..df75f1beb731 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -132,7 +132,6 @@ TEST_PROGS := test_kmod.sh \ test_tunnel.sh \ test_lwt_seg6local.sh \ test_lirc_mode2.sh \ - test_skb_cgroup_id.sh \ test_flow_dissector.sh \ test_xdp_vlan_mode_generic.sh \ test_xdp_vlan_mode_native.sh \ -- cgit v1.2.3 From fd4a0e67838c1e0fc4927fae113d785aa893997d Mon Sep 17 00:00:00 2001 From: Ihor Solodrai Date: Mon, 16 Sep 2024 19:59:27 +0000 Subject: selftests/bpf: Set vpath in Makefile to search for skels MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Auto-dependencies generated for %.test.o files refer to skels using filenames as opposed to full paths. This requires make to be able to link this name to an actual path, because not all generated skels are put in the working directory. In the original patch [1], this was mitigated by this target: $(notdir %.skel.h): $(TRUNNER_OUTPUT)/%.skel.h @true This turned out to be insufficient. First, %.lskel.h and %.subskel.h were missed, because a typical selftests/bpf build could find these files in the working directory. This error was detected by an out-of-tree build [2]. Second, even with missing rules added, this target causes unnecessary rebuilds in the out-of-tree case, as X.skel.h is searched for in the working directory, and not in the $(OUTPUT). Using vpath directive [3] is a better solution. Instead of introducing a separate target (X.skel.h in addition to $(TRUNNER_OUTPUT)/X.skel.h), make is instructed to search for skels in the output, which allows make to correctly detect that skel has already been generated. [1]: https://lore.kernel.org/bpf/VJihUTnvtwEgv_mOnpfy7EgD9D2MPNoHO-MlANeLIzLJPGhDeyOuGKIYyKgk0O6KPjfM-MuhtvPwZcngN8WFqbTnTRyCSMc2aMZ1ODm1T_g=@pm.me/ [2]: https://lore.kernel.org/bpf/CIjrhJwoIqMc2IhuppVqh4ZtJGbx8kC8rc9PHhAIU6RccnWT4I04F_EIr4GxQwxZe89McuGJlCnUk9UbkdvWtSJjAsd7mHmnTy9F8K2TLZM=@pm.me/ [3]: https://www.gnu.org/software/make/manual/html_node/Selective-Search.html Reported-by: Björn Töpel Signed-off-by: Ihor Solodrai Signed-off-by: Andrii Nakryiko Tested-by: Björn Töpel Link: https://lore.kernel.org/bpf/20240916195919.1872371-2-ihor.solodrai@pm.me Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/Makefile | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index df75f1beb731..365740f24d2e 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -622,10 +622,11 @@ $(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TR # When the compiler generates a %.d file, only skel basenames (not # full paths) are specified as prerequisites for corresponding %.o -# file. This target makes %.skel.h basename dependent on full paths, -# linking generated %.d dependency with actual %.skel.h files. -$(notdir %.skel.h): $(TRUNNER_OUTPUT)/%.skel.h - @true +# file. vpath directives below instruct make to search for skel files +# in TRUNNER_OUTPUT, if they are not present in the working directory. +vpath %.skel.h $(TRUNNER_OUTPUT) +vpath %.lskel.h $(TRUNNER_OUTPUT) +vpath %.subskel.h $(TRUNNER_OUTPUT) endif -- cgit v1.2.3 From 4b7c05598a644782b8451e415bb56f31e5c9d3ee Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 24 Sep 2024 13:07:30 +0200 Subject: selftests/bpf: Fix uprobe consumer test With newly merged code the uprobe behaviour is slightly different and affects uprobe consumer test. We no longer need to check if the uprobe object is still preserved after removing last uretprobe, because it stays as long as there's pending/installed uretprobe instance. This allows to run uretprobe consumers registered 'after' uprobe was hit even if previous uretprobe got unregistered before being hit. The uprobe object will be now removed after the last uprobe ref is released and in such case it's held by ri->uprobe (return instance) which is released after the uretprobe is hit. Reported-by: Ihor Solodrai Signed-off-by: Jiri Olsa Signed-off-by: Daniel Borkmann Tested-by: Ihor Solodrai Closes: https://lore.kernel.org/bpf/w6U8Z9fdhjnkSp2UaFaV1fGqJXvfLEtDKEUyGDkwmoruDJ_AgF_c0FFhrkeKW18OqiP-05s9yDKiT6X-Ns-avN_ABf0dcUkXqbSJN1TQSXo=@pm.me/ Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c index 844f6fc8487b..c1ac813ff9ba 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c @@ -869,21 +869,14 @@ static void consumer_test(struct uprobe_multi_consumers *skel, fmt = "prog 0/1: uprobe"; } else { /* - * uprobe return is tricky ;-) - * * to trigger uretprobe consumer, the uretprobe needs to be installed, * which means one of the 'return' uprobes was alive when probe was hit: * * idxs: 2/3 uprobe return in 'installed' mask - * - * in addition if 'after' state removes everything that was installed in - * 'before' state, then uprobe kernel object goes away and return uprobe - * is not installed and we won't hit it even if it's in 'after' state. */ unsigned long had_uretprobes = before & 0b1100; /* is uretprobe installed */ - unsigned long probe_preserved = before & after; /* did uprobe go away */ - if (had_uretprobes && probe_preserved && test_bit(idx, after)) + if (had_uretprobes && test_bit(idx, after)) val++; fmt = "idx 2/3: uretprobe"; } -- cgit v1.2.3 From 58dbb36930183aea41024d9c0b0ed97629473e20 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 24 Sep 2024 13:07:31 +0200 Subject: selftests/bpf: Bail out quickly from failing consumer test Let's bail out from consumer test after we hit first fail, so we don't pollute the log with many instances with possibly the same error. Signed-off-by: Jiri Olsa Signed-off-by: Daniel Borkmann Signed-off-by: Alexei Starovoitov --- .../testing/selftests/bpf/prog_tests/uprobe_multi_test.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c index c1ac813ff9ba..2c39902b8a09 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c @@ -836,10 +836,10 @@ uprobe_consumer_test(struct uprobe_multi_consumers *skel, return 0; } -static void consumer_test(struct uprobe_multi_consumers *skel, - unsigned long before, unsigned long after) +static int consumer_test(struct uprobe_multi_consumers *skel, + unsigned long before, unsigned long after) { - int err, idx; + int err, idx, ret = -1; printf("consumer_test before %lu after %lu\n", before, after); @@ -881,13 +881,17 @@ static void consumer_test(struct uprobe_multi_consumers *skel, fmt = "idx 2/3: uretprobe"; } - ASSERT_EQ(skel->bss->uprobe_result[idx], val, fmt); + if (!ASSERT_EQ(skel->bss->uprobe_result[idx], val, fmt)) + goto cleanup; skel->bss->uprobe_result[idx] = 0; } + ret = 0; + cleanup: for (idx = 0; idx < 4; idx++) uprobe_detach(skel, idx); + return ret; } static void test_consumers(void) @@ -939,9 +943,11 @@ static void test_consumers(void) for (before = 0; before < 16; before++) { for (after = 0; after < 16; after++) - consumer_test(skel, before, after); + if (consumer_test(skel, before, after)) + goto out; } +out: uprobe_multi_consumers__destroy(skel); } -- cgit v1.2.3 From a1ec23b947538520b3182c598dc2bb9930d032b1 Mon Sep 17 00:00:00 2001 From: Zhang Jiao Date: Tue, 24 Sep 2024 12:55:34 +0800 Subject: selftests/bpf: Add missing va_end. There is no va_end after va_copy, just add it. Signed-off-by: Zhang Jiao Signed-off-by: Daniel Borkmann Acked-by: Eduard Zingerman Link: https://lore.kernel.org/r/20240924045534.8672-1-zhangjiao2@cmss.chinamobile.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/test_progs.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c index c7a70e1a1085..7846f7f98908 100644 --- a/tools/testing/selftests/bpf/test_progs.c +++ b/tools/testing/selftests/bpf/test_progs.c @@ -868,6 +868,7 @@ static int libbpf_print_fn(enum libbpf_print_level level, va_copy(args2, args); vfprintf(libbpf_capture_stream, format, args2); + va_end(args2); } if (env.verbosity < VERBOSE_VERY && level == LIBBPF_DEBUG) -- cgit v1.2.3 From 8b334d91834666dbc4c1c0b0abed3f855ed16cf3 Mon Sep 17 00:00:00 2001 From: Ihor Solodrai Date: Wed, 18 Sep 2024 19:33:22 +0000 Subject: libbpf: Change log level of BTF loading error message Reduce log level of BTF loading error to INFO if BTF is not required. Andrii says: Nowadays the expectation is that the BPF program will have a valid .BTF section, so even though .BTF is "optional", I think it's fine to emit a warning for that case (any reasonably recent Clang will produce valid BTF). Ihor's patch is fixing the situation with an outdated host kernel that doesn't understand BTF. libbpf will try to "upload" the program's BTF, but if that fails and the BPF object doesn't use any features that require having BTF uploaded, then it's just an information message to the user, but otherwise can be ignored. Suggested-by: Andrii Nakryiko Signed-off-by: Ihor Solodrai Acked-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/libbpf.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 219facd0e66e..b8d72b5fbc79 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -3581,11 +3581,12 @@ static int bpf_object__sanitize_and_load_btf(struct bpf_object *obj) report: if (err) { btf_mandatory = kernel_needs_btf(obj); - pr_warn("Error loading .BTF into kernel: %d. %s\n", err, - btf_mandatory ? "BTF is mandatory, can't proceed." - : "BTF is optional, ignoring."); - if (!btf_mandatory) + if (btf_mandatory) { + pr_warn("Error loading .BTF into kernel: %d. BTF is mandatory, can't proceed.\n", err); + } else { + pr_info("Error loading .BTF into kernel: %d. BTF is optional, ignoring.\n", err); err = 0; + } } return err; } -- cgit v1.2.3 From a400d08b3014a4f4e939366bb6fd769b9caff4c9 Mon Sep 17 00:00:00 2001 From: Tao Chen Date: Wed, 25 Sep 2024 23:30:12 +0800 Subject: libbpf: Fix expected_attach_type set handling in program load callback Referenced commit broke the logic of resetting expected_attach_type to zero for allowed program types if kernel doesn't yet support such field. We do need to overwrite and preserve expected_attach_type for multi-uprobe though, but that can be done explicitly in libbpf_prepare_prog_load(). Fixes: 5902da6d8a52 ("libbpf: Add uprobe multi link support to bpf_program__attach_usdt") Suggested-by: Jiri Olsa Signed-off-by: Tao Chen Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240925153012.212866-1-chen.dylane@gmail.com Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/libbpf.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index b8d72b5fbc79..1ef221df0541 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -7353,8 +7353,14 @@ static int libbpf_prepare_prog_load(struct bpf_program *prog, opts->prog_flags |= BPF_F_XDP_HAS_FRAGS; /* special check for usdt to use uprobe_multi link */ - if ((def & SEC_USDT) && kernel_supports(prog->obj, FEAT_UPROBE_MULTI_LINK)) + if ((def & SEC_USDT) && kernel_supports(prog->obj, FEAT_UPROBE_MULTI_LINK)) { + /* for BPF_TRACE_UPROBE_MULTI, user might want to query expected_attach_type + * in prog, and expected_attach_type we set in kernel is from opts, so we + * update both. + */ prog->expected_attach_type = BPF_TRACE_UPROBE_MULTI; + opts->expected_attach_type = BPF_TRACE_UPROBE_MULTI; + } if ((def & SEC_ATTACH_BTF) && !prog->attach_btf_id) { int btf_obj_fd = 0, btf_type_id = 0, err; @@ -7444,6 +7450,7 @@ static int bpf_object_load_prog(struct bpf_object *obj, struct bpf_program *prog load_attr.attach_btf_id = prog->attach_btf_id; load_attr.kern_version = kern_version; load_attr.prog_ifindex = prog->prog_ifindex; + load_attr.expected_attach_type = prog->expected_attach_type; /* specify func_info/line_info only if kernel supports them */ if (obj->btf && btf__fd(obj->btf) >= 0 && kernel_supports(obj, FEAT_BTF_FUNC)) { @@ -7475,9 +7482,6 @@ static int bpf_object_load_prog(struct bpf_object *obj, struct bpf_program *prog insns_cnt = prog->insns_cnt; } - /* allow prog_prepare_load_fn to change expected_attach_type */ - load_attr.expected_attach_type = prog->expected_attach_type; - if (obj->gen_loader) { bpf_gen__prog_load(obj->gen_loader, prog->type, prog->name, license, insns, insns_cnt, &load_attr, -- cgit v1.2.3 From 78971150660650cd22ef236c708aab3a7620e2fa Mon Sep 17 00:00:00 2001 From: Manu Bretelle Date: Tue, 24 Sep 2024 17:22:10 -0700 Subject: selftests/bpf: vm: Add support for VIRTIO_FS danobi/vmtest is going to migrate from using 9p to using virtio_fs to mount the local rootfs: https://github.com/danobi/vmtest/pull/88 BPF CI uses danobi/vmtest to run bpf selftests and will need to support VIRTIO_FS. This change enables new kconfigs to be able to support the upcoming danobi/vmtest. Tested by building a new kernel with those config and confirming it would successfully run with 9p (currently what is used by vmtest), and with virtio_fs (using a local build of vmtest). $ vmtest -k arch/x86/boot/bzImage "findmnt /" => bzImage ===> Booting ===> Setting up VM ===> Running command TARGET SOURCE FSTYPE OPTIONS / /dev/root 9p rw,relatime,cache=5,access=client,msize=512000,trans=virtio $ /home/chantra/local/danobi-vmtest/target/debug/vmtest -k arch/x86/boot/bzImage "findmnt /" => bzImage ===> Initializing host environment ===> Booting ===> Setting up VM ===> Running command TARGET SOURCE FSTYPE OPTIONS / rootfs virtiofs rw,relatime Changes in v2: * Sorted configs alphabetically Signed-off-by: Manu Bretelle Signed-off-by: Andrii Nakryiko Acked-by: Daniel Xu Link: https://lore.kernel.org/bpf/20240925002210.501266-1-chantr4@gmail.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/config.vm | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/config.vm b/tools/testing/selftests/bpf/config.vm index a9746ca78777..da543b24c144 100644 --- a/tools/testing/selftests/bpf/config.vm +++ b/tools/testing/selftests/bpf/config.vm @@ -1,12 +1,15 @@ -CONFIG_9P_FS=y CONFIG_9P_FS_POSIX_ACL=y CONFIG_9P_FS_SECURITY=y +CONFIG_9P_FS=y CONFIG_CRYPTO_DEV_VIRTIO=y -CONFIG_NET_9P=y +CONFIG_FUSE_FS=y +CONFIG_FUSE_PASSTHROUGH=y CONFIG_NET_9P_VIRTIO=y +CONFIG_NET_9P=y CONFIG_VIRTIO_BALLOON=y CONFIG_VIRTIO_BLK=y CONFIG_VIRTIO_CONSOLE=y +CONFIG_VIRTIO_FS=y CONFIG_VIRTIO_NET=y CONFIG_VIRTIO_PCI=y CONFIG_VIRTIO_VSOCKETS_COMMON=y -- cgit v1.2.3 From 89abc4080301cad681a52217a2a622dcd8947193 Mon Sep 17 00:00:00 2001 From: Zhu Jun Date: Wed, 25 Sep 2024 03:00:05 -0700 Subject: tools/bpf: Remove unused variable from runqslower This variable is never referenced in the code, just remove it. Signed-off-by: Zhu Jun Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240925100005.3989-1-zhujun2@cmss.chinamobile.com Signed-off-by: Alexei Starovoitov --- tools/bpf/runqslower/runqslower.bpf.c | 1 - 1 file changed, 1 deletion(-) (limited to 'tools') diff --git a/tools/bpf/runqslower/runqslower.bpf.c b/tools/bpf/runqslower/runqslower.bpf.c index 9a5c1f008fe6..fced54a3adf6 100644 --- a/tools/bpf/runqslower/runqslower.bpf.c +++ b/tools/bpf/runqslower/runqslower.bpf.c @@ -70,7 +70,6 @@ int handle__sched_switch(u64 *ctx) struct task_struct *next = (struct task_struct *)ctx[2]; struct runq_event event = {}; u64 *tsp, delta_us; - long state; u32 pid; /* ivcsw: treat like an enqueue event and store timestamp */ -- cgit v1.2.3 From 90d0f736bd1cfb94e9dfcf1be716242c0b08dd7f Mon Sep 17 00:00:00 2001 From: Chen Ni Date: Thu, 26 Sep 2024 10:38:23 +0800 Subject: libbpf: Remove unneeded semicolon Remove unneeded semicolon in zip_archive_open(). Signed-off-by: Chen Ni Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240926023823.3632993-1-nichen@iscas.ac.cn Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/zip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lib/bpf/zip.c b/tools/lib/bpf/zip.c index 3f26d629b2b4..88c376a8348d 100644 --- a/tools/lib/bpf/zip.c +++ b/tools/lib/bpf/zip.c @@ -223,7 +223,7 @@ struct zip_archive *zip_archive_open(const char *path) if (!archive) { munmap(data, size); return ERR_PTR(-ENOMEM); - }; + } archive->data = data; archive->size = size; -- cgit v1.2.3 From c27d8235ba97139d7a085367ff57773902eb3fc5 Mon Sep 17 00:00:00 2001 From: Alan Maguire Date: Thu, 26 Sep 2024 15:49:48 +0100 Subject: selftests/bpf: Fix uprobe_multi compilation error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When building selftests, the following was seen: uprobe_multi.c: In function ‘trigger_uprobe’: uprobe_multi.c:108:40: error: ‘MADV_PAGEOUT’ undeclared (first use in this function) 108 | madvise(addr, page_sz, MADV_PAGEOUT); | ^~~~~~~~~~~~ uprobe_multi.c:108:40: note: each undeclared identifier is reported only once for each function it appears in make: *** [Makefile:850: bpf-next/tools/testing/selftests/bpf/uprobe_multi] Error 1 ...even with updated UAPI headers. It seems the above value is defined in UAPI but including that file triggers other redefinition errors. Simplest solution is to add a guarded definition, as was done for MADV_POPULATE_READ. Fixes: 3c217a182018 ("selftests/bpf: add build ID tests") Signed-off-by: Alan Maguire Signed-off-by: Andrii Nakryiko Acked-by: Eduard Zingerman Link: https://lore.kernel.org/bpf/20240926144948.172090-1-alan.maguire@oracle.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/uprobe_multi.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/uprobe_multi.c b/tools/testing/selftests/bpf/uprobe_multi.c index c7828b13e5ff..dd38dc68f635 100644 --- a/tools/testing/selftests/bpf/uprobe_multi.c +++ b/tools/testing/selftests/bpf/uprobe_multi.c @@ -12,6 +12,10 @@ #define MADV_POPULATE_READ 22 #endif +#ifndef MADV_PAGEOUT +#define MADV_PAGEOUT 21 +#endif + int __attribute__((weak)) uprobe(void) { return 0; -- cgit v1.2.3 From e8957c0dde3c945db2403beb3131a5ad84860b5f Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:40 -0700 Subject: libbpf: Improve log message formatting Fix missing newlines and extraneous terminal spaces in messages. Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/086884b7cbf87e524d584f9bf87f7a580e378b2b.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/btf.c | 6 +++--- tools/lib/bpf/btf_dump.c | 2 +- tools/lib/bpf/btf_relocate.c | 2 +- tools/lib/bpf/libbpf.c | 4 ++-- tools/lib/bpf/relo_core.c | 2 +- 5 files changed, 8 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 3c131039c523..e1d4cbd83729 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -2941,7 +2941,7 @@ static int btf_ext_setup_info(struct btf_ext *btf_ext, /* If no records, return failure now so .BTF.ext won't be used. */ if (!info_left) { - pr_debug("%s section in .BTF.ext has no records", ext_sec->desc); + pr_debug("%s section in .BTF.ext has no records\n", ext_sec->desc); return -EINVAL; } @@ -3029,7 +3029,7 @@ static int btf_ext_parse_hdr(__u8 *data, __u32 data_size) if (data_size < offsetofend(struct btf_ext_header, hdr_len) || data_size < hdr->hdr_len) { - pr_debug("BTF.ext header not found"); + pr_debug("BTF.ext header not found\n"); return -EINVAL; } @@ -3291,7 +3291,7 @@ int btf__dedup(struct btf *btf, const struct btf_dedup_opts *opts) d = btf_dedup_new(btf, opts); if (IS_ERR(d)) { - pr_debug("btf_dedup_new failed: %ld", PTR_ERR(d)); + pr_debug("btf_dedup_new failed: %ld\n", PTR_ERR(d)); return libbpf_err(-EINVAL); } diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c index 0a7327541c17..8440c2c5ad3e 100644 --- a/tools/lib/bpf/btf_dump.c +++ b/tools/lib/bpf/btf_dump.c @@ -1304,7 +1304,7 @@ static void btf_dump_emit_type_decl(struct btf_dump *d, __u32 id, * chain, restore stack, emit warning, and try to * proceed nevertheless */ - pr_warn("not enough memory for decl stack:%d", err); + pr_warn("not enough memory for decl stack: %d\n", err); d->decl_stack_cnt = stack_start; return; } diff --git a/tools/lib/bpf/btf_relocate.c b/tools/lib/bpf/btf_relocate.c index 4f7399d85eab..b72f83e15156 100644 --- a/tools/lib/bpf/btf_relocate.c +++ b/tools/lib/bpf/btf_relocate.c @@ -428,7 +428,7 @@ static int btf_relocate_rewrite_strs(struct btf_relocate *r, __u32 i) } else { off = r->str_map[*str_off]; if (!off) { - pr_warn("string '%s' [offset %u] is not mapped to base BTF", + pr_warn("string '%s' [offset %u] is not mapped to base BTF\n", btf__str_by_offset(r->btf, off), *str_off); return -ENOENT; } diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 1ef221df0541..a7cbb30605da 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -12765,7 +12765,7 @@ struct bpf_link *bpf_program__attach_freplace(const struct bpf_program *prog, } if (prog->type != BPF_PROG_TYPE_EXT) { - pr_warn("prog '%s': only BPF_PROG_TYPE_EXT can attach as freplace", + pr_warn("prog '%s': only BPF_PROG_TYPE_EXT can attach as freplace\n", prog->name); return libbpf_err_ptr(-EINVAL); } @@ -13839,7 +13839,7 @@ int bpf_object__open_subskeleton(struct bpf_object_subskeleton *s) map_type = btf__type_by_id(btf, map_type_id); if (!btf_is_datasec(map_type)) { - pr_warn("type for map '%1$s' is not a datasec: %2$s", + pr_warn("type for map '%1$s' is not a datasec: %2$s\n", bpf_map__name(map), __btf_kind_str(btf_kind(map_type))); return libbpf_err(-EINVAL); diff --git a/tools/lib/bpf/relo_core.c b/tools/lib/bpf/relo_core.c index 63a4d5ad12d1..7632e9d41827 100644 --- a/tools/lib/bpf/relo_core.c +++ b/tools/lib/bpf/relo_core.c @@ -1339,7 +1339,7 @@ int bpf_core_calc_relo_insn(const char *prog_name, cands->cands[i].id, cand_spec); if (err < 0) { bpf_core_format_spec(spec_buf, sizeof(spec_buf), cand_spec); - pr_warn("prog '%s': relo #%d: error matching candidate #%d %s: %d\n ", + pr_warn("prog '%s': relo #%d: error matching candidate #%d %s: %d\n", prog_name, relo_idx, i, spec_buf, err); return err; } -- cgit v1.2.3 From 769ad3a61e335ced0a47e300b71b2206963e09a9 Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:41 -0700 Subject: libbpf: Fix header comment typos for BTF.ext Mention struct btf_ext_info_sec rather than non-existent btf_sec_func_info in BTF.ext struct documentation. Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/cde65e01a5f2945c578485fab265ef711e2daeb6.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/libbpf_internal.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h index 408df59e0771..8cda511a1982 100644 --- a/tools/lib/bpf/libbpf_internal.h +++ b/tools/lib/bpf/libbpf_internal.h @@ -448,11 +448,11 @@ struct btf_ext_info { * * The func_info subsection layout: * record size for struct bpf_func_info in the func_info subsection - * struct btf_sec_func_info for section #1 + * struct btf_ext_info_sec for section #1 * a list of bpf_func_info records for section #1 * where struct bpf_func_info mimics one in include/uapi/linux/bpf.h * but may not be identical - * struct btf_sec_func_info for section #2 + * struct btf_ext_info_sec for section #2 * a list of bpf_func_info records for section #2 * ...... * -- cgit v1.2.3 From f896b4a5399e97af0b451fcf04754ed316935674 Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:42 -0700 Subject: libbpf: Fix output .symtab byte-order during linking Object linking output data uses the default ELF_T_BYTE type for '.symtab' section data, which disables any libelf-based translation. Explicitly set the ELF_T_SYM type for output to restore libelf's byte-order conversion, noting that input '.symtab' data is already correctly translated. Fixes: faf6ed321cf6 ("libbpf: Add BPF static linker APIs") Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/87868bfeccf3f51aec61260073f8778e9077050a.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/linker.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/lib/bpf/linker.c b/tools/lib/bpf/linker.c index e0005c6ade88..6985ab0f1ca9 100644 --- a/tools/lib/bpf/linker.c +++ b/tools/lib/bpf/linker.c @@ -396,6 +396,8 @@ static int init_output_elf(struct bpf_linker *linker, const char *file) pr_warn_elf("failed to create SYMTAB data"); return -EINVAL; } + /* Ensure libelf translates byte-order of symbol records */ + sec->data->d_type = ELF_T_SYM; str_off = strset__add_str(linker->strtab_strs, sec->sec_name); if (str_off < 0) -- cgit v1.2.3 From cf579164e9ea9cd41c7c1da931683a319d224890 Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:43 -0700 Subject: libbpf: Support BTF.ext loading and output in either endianness Support for handling BTF data of either endianness was added in [1], but did not include BTF.ext data for lack of use cases. Later, support for static linking [2] provided a use case, but this feature and later ones were restricted to native-endian usage. Add support for BTF.ext handling in either endianness. Convert BTF.ext data to native endianness when read into memory for further processing, and support raw data access that restores the original byte-order for output. Add internal header functions for byte-swapping func, line, and core info records. Add new API functions btf_ext__endianness() and btf_ext__set_endianness() for query and setting byte-order, as already exist for BTF data. [1] 3289959b97ca ("libbpf: Support BTF loading and raw data output in both endianness") [2] 8fd27bf69b86 ("libbpf: Add BPF static linker BTF and BTF.ext support") Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/133407ab20e0dd5c07cab2a6fa7879dee1ffa4bc.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/btf.c | 276 +++++++++++++++++++++++++++++++--------- tools/lib/bpf/btf.h | 3 + tools/lib/bpf/libbpf.map | 2 + tools/lib/bpf/libbpf_internal.h | 29 +++++ 4 files changed, 253 insertions(+), 57 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index e1d4cbd83729..e9673c0ecbe7 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -2885,7 +2885,7 @@ int btf__add_decl_tag(struct btf *btf, const char *value, int ref_type_id, return btf_commit_type(btf, sz); } -struct btf_ext_sec_setup_param { +struct btf_ext_sec_info_param { __u32 off; __u32 len; __u32 min_rec_size; @@ -2893,14 +2893,20 @@ struct btf_ext_sec_setup_param { const char *desc; }; -static int btf_ext_setup_info(struct btf_ext *btf_ext, - struct btf_ext_sec_setup_param *ext_sec) +/* + * Parse a single info subsection of the BTF.ext info data: + * - validate subsection structure and elements + * - save info subsection start and sizing details in struct btf_ext + * - endian-independent operation, for calling before byte-swapping + */ +static int btf_ext_parse_sec_info(struct btf_ext *btf_ext, + struct btf_ext_sec_info_param *ext_sec, + bool is_native) { const struct btf_ext_info_sec *sinfo; struct btf_ext_info *ext_info; __u32 info_left, record_size; size_t sec_cnt = 0; - /* The start of the info sec (including the __u32 record_size). */ void *info; if (ext_sec->len == 0) @@ -2912,6 +2918,7 @@ static int btf_ext_setup_info(struct btf_ext *btf_ext, return -EINVAL; } + /* The start of the info sec (including the __u32 record_size). */ info = btf_ext->data + btf_ext->hdr->hdr_len + ext_sec->off; info_left = ext_sec->len; @@ -2927,9 +2934,13 @@ static int btf_ext_setup_info(struct btf_ext *btf_ext, return -EINVAL; } - /* The record size needs to meet the minimum standard */ - record_size = *(__u32 *)info; + /* The record size needs to meet either the minimum standard or, when + * handling non-native endianness data, the exact standard so as + * to allow safe byte-swapping. + */ + record_size = is_native ? *(__u32 *)info : bswap_32(*(__u32 *)info); if (record_size < ext_sec->min_rec_size || + (!is_native && record_size != ext_sec->min_rec_size) || record_size & 0x03) { pr_debug("%s section in .BTF.ext has invalid record size %u\n", ext_sec->desc, record_size); @@ -2956,7 +2967,7 @@ static int btf_ext_setup_info(struct btf_ext *btf_ext, return -EINVAL; } - num_records = sinfo->num_info; + num_records = is_native ? sinfo->num_info : bswap_32(sinfo->num_info); if (num_records == 0) { pr_debug("%s section has incorrect num_records in .BTF.ext\n", ext_sec->desc); @@ -2984,64 +2995,157 @@ static int btf_ext_setup_info(struct btf_ext *btf_ext, return 0; } -static int btf_ext_setup_func_info(struct btf_ext *btf_ext) +/* Parse all info secs in the BTF.ext info data */ +static int btf_ext_parse_info(struct btf_ext *btf_ext, bool is_native) { - struct btf_ext_sec_setup_param param = { + struct btf_ext_sec_info_param func_info = { .off = btf_ext->hdr->func_info_off, .len = btf_ext->hdr->func_info_len, .min_rec_size = sizeof(struct bpf_func_info_min), .ext_info = &btf_ext->func_info, .desc = "func_info" }; - - return btf_ext_setup_info(btf_ext, ¶m); -} - -static int btf_ext_setup_line_info(struct btf_ext *btf_ext) -{ - struct btf_ext_sec_setup_param param = { + struct btf_ext_sec_info_param line_info = { .off = btf_ext->hdr->line_info_off, .len = btf_ext->hdr->line_info_len, .min_rec_size = sizeof(struct bpf_line_info_min), .ext_info = &btf_ext->line_info, .desc = "line_info", }; - - return btf_ext_setup_info(btf_ext, ¶m); -} - -static int btf_ext_setup_core_relos(struct btf_ext *btf_ext) -{ - struct btf_ext_sec_setup_param param = { + struct btf_ext_sec_info_param core_relo = { .off = btf_ext->hdr->core_relo_off, .len = btf_ext->hdr->core_relo_len, .min_rec_size = sizeof(struct bpf_core_relo), .ext_info = &btf_ext->core_relo_info, .desc = "core_relo", }; + int err; + + err = btf_ext_parse_sec_info(btf_ext, &func_info, is_native); + if (err) + return err; + + err = btf_ext_parse_sec_info(btf_ext, &line_info, is_native); + if (err) + return err; + + if (btf_ext->hdr->hdr_len < offsetofend(struct btf_ext_header, core_relo_len)) + return 0; /* skip core relos parsing */ - return btf_ext_setup_info(btf_ext, ¶m); + err = btf_ext_parse_sec_info(btf_ext, &core_relo, is_native); + if (err) + return err; + + return 0; } -static int btf_ext_parse_hdr(__u8 *data, __u32 data_size) +/* Swap byte-order of BTF.ext header with any endianness */ +static void btf_ext_bswap_hdr(struct btf_ext_header *h) { - const struct btf_ext_header *hdr = (struct btf_ext_header *)data; + bool is_native = h->magic == BTF_MAGIC; + __u32 hdr_len; - if (data_size < offsetofend(struct btf_ext_header, hdr_len) || - data_size < hdr->hdr_len) { - pr_debug("BTF.ext header not found\n"); + hdr_len = is_native ? h->hdr_len : bswap_32(h->hdr_len); + + h->magic = bswap_16(h->magic); + h->hdr_len = bswap_32(h->hdr_len); + h->func_info_off = bswap_32(h->func_info_off); + h->func_info_len = bswap_32(h->func_info_len); + h->line_info_off = bswap_32(h->line_info_off); + h->line_info_len = bswap_32(h->line_info_len); + + if (hdr_len < offsetofend(struct btf_ext_header, core_relo_len)) + return; + + h->core_relo_off = bswap_32(h->core_relo_off); + h->core_relo_len = bswap_32(h->core_relo_len); +} + +/* Swap byte-order of generic info subsection */ +static void btf_ext_bswap_info_sec(void *info, __u32 len, bool is_native, + info_rec_bswap_fn bswap_fn) +{ + struct btf_ext_info_sec *sec; + __u32 info_left, rec_size, *rs; + + if (len == 0) + return; + + rs = info; /* info record size */ + rec_size = is_native ? *rs : bswap_32(*rs); + *rs = bswap_32(*rs); + + sec = info + sizeof(__u32); /* info sec #1 */ + info_left = len - sizeof(__u32); + while (info_left) { + unsigned int sec_hdrlen = sizeof(struct btf_ext_info_sec); + __u32 i, num_recs; + void *p; + + num_recs = is_native ? sec->num_info : bswap_32(sec->num_info); + sec->sec_name_off = bswap_32(sec->sec_name_off); + sec->num_info = bswap_32(sec->num_info); + p = sec->data; /* info rec #1 */ + for (i = 0; i < num_recs; i++, p += rec_size) + bswap_fn(p); + sec = p; + info_left -= sec_hdrlen + (__u64)rec_size * num_recs; + } +} + +/* + * Swap byte-order of all info data in a BTF.ext section + * - requires BTF.ext hdr in native endianness + */ +static void btf_ext_bswap_info(struct btf_ext *btf_ext, void *data) +{ + const bool is_native = btf_ext->swapped_endian; + const struct btf_ext_header *h = data; + void *info; + + /* Swap func_info subsection byte-order */ + info = data + h->hdr_len + h->func_info_off; + btf_ext_bswap_info_sec(info, h->func_info_len, is_native, + (info_rec_bswap_fn)bpf_func_info_bswap); + + /* Swap line_info subsection byte-order */ + info = data + h->hdr_len + h->line_info_off; + btf_ext_bswap_info_sec(info, h->line_info_len, is_native, + (info_rec_bswap_fn)bpf_line_info_bswap); + + /* Swap core_relo subsection byte-order (if present) */ + if (h->hdr_len < offsetofend(struct btf_ext_header, core_relo_len)) + return; + + info = data + h->hdr_len + h->core_relo_off; + btf_ext_bswap_info_sec(info, h->core_relo_len, is_native, + (info_rec_bswap_fn)bpf_core_relo_bswap); +} + +/* Parse hdr data and info sections: check and convert to native endianness */ +static int btf_ext_parse(struct btf_ext *btf_ext) +{ + __u32 hdr_len, data_size = btf_ext->data_size; + struct btf_ext_header *hdr = btf_ext->hdr; + bool swapped_endian = false; + int err; + + if (data_size < offsetofend(struct btf_ext_header, hdr_len)) { + pr_debug("BTF.ext header too short\n"); return -EINVAL; } + hdr_len = hdr->hdr_len; if (hdr->magic == bswap_16(BTF_MAGIC)) { - pr_warn("BTF.ext in non-native endianness is not supported\n"); - return -ENOTSUP; + swapped_endian = true; + hdr_len = bswap_32(hdr_len); } else if (hdr->magic != BTF_MAGIC) { pr_debug("Invalid BTF.ext magic:%x\n", hdr->magic); return -EINVAL; } - if (hdr->version != BTF_VERSION) { + /* Ensure known version of structs, current BTF_VERSION == 1 */ + if (hdr->version != 1) { pr_debug("Unsupported BTF.ext version:%u\n", hdr->version); return -ENOTSUP; } @@ -3051,11 +3155,39 @@ static int btf_ext_parse_hdr(__u8 *data, __u32 data_size) return -ENOTSUP; } - if (data_size == hdr->hdr_len) { + if (data_size < hdr_len) { + pr_debug("BTF.ext header not found\n"); + return -EINVAL; + } else if (data_size == hdr_len) { pr_debug("BTF.ext has no data\n"); return -EINVAL; } + /* Verify mandatory hdr info details present */ + if (hdr_len < offsetofend(struct btf_ext_header, line_info_len)) { + pr_warn("BTF.ext header missing func_info, line_info\n"); + return -EINVAL; + } + + /* Keep hdr native byte-order in memory for introspection */ + if (swapped_endian) + btf_ext_bswap_hdr(btf_ext->hdr); + + /* Validate info subsections and cache key metadata */ + err = btf_ext_parse_info(btf_ext, !swapped_endian); + if (err) + return err; + + /* Keep infos native byte-order in memory for introspection */ + if (swapped_endian) + btf_ext_bswap_info(btf_ext, btf_ext->data); + + /* + * Set btf_ext->swapped_endian only after all header and info data has + * been swapped, helping bswap functions determine if their data are + * in native byte-order when called. + */ + btf_ext->swapped_endian = swapped_endian; return 0; } @@ -3067,6 +3199,7 @@ void btf_ext__free(struct btf_ext *btf_ext) free(btf_ext->line_info.sec_idxs); free(btf_ext->core_relo_info.sec_idxs); free(btf_ext->data); + free(btf_ext->data_swapped); free(btf_ext); } @@ -3087,29 +3220,7 @@ struct btf_ext *btf_ext__new(const __u8 *data, __u32 size) } memcpy(btf_ext->data, data, size); - err = btf_ext_parse_hdr(btf_ext->data, size); - if (err) - goto done; - - if (btf_ext->hdr->hdr_len < offsetofend(struct btf_ext_header, line_info_len)) { - err = -EINVAL; - goto done; - } - - err = btf_ext_setup_func_info(btf_ext); - if (err) - goto done; - - err = btf_ext_setup_line_info(btf_ext); - if (err) - goto done; - - if (btf_ext->hdr->hdr_len < offsetofend(struct btf_ext_header, core_relo_len)) - goto done; /* skip core relos parsing */ - - err = btf_ext_setup_core_relos(btf_ext); - if (err) - goto done; + err = btf_ext_parse(btf_ext); done: if (err) { @@ -3120,15 +3231,66 @@ done: return btf_ext; } +static void *btf_ext_raw_data(const struct btf_ext *btf_ext_ro, bool swap_endian) +{ + struct btf_ext *btf_ext = (struct btf_ext *)btf_ext_ro; + const __u32 data_sz = btf_ext->data_size; + void *data; + + /* Return native data (always present) or swapped data if present */ + if (!swap_endian) + return btf_ext->data; + else if (btf_ext->data_swapped) + return btf_ext->data_swapped; + + /* Recreate missing swapped data, then cache and return */ + data = calloc(1, data_sz); + if (!data) + return NULL; + memcpy(data, btf_ext->data, data_sz); + + btf_ext_bswap_info(btf_ext, data); + btf_ext_bswap_hdr(data); + btf_ext->data_swapped = data; + return data; +} + const void *btf_ext__raw_data(const struct btf_ext *btf_ext, __u32 *size) { + void *data; + + data = btf_ext_raw_data(btf_ext, btf_ext->swapped_endian); + if (!data) + return errno = ENOMEM, NULL; + *size = btf_ext->data_size; - return btf_ext->data; + return data; } __attribute__((alias("btf_ext__raw_data"))) const void *btf_ext__get_raw_data(const struct btf_ext *btf_ext, __u32 *size); +enum btf_endianness btf_ext__endianness(const struct btf_ext *btf_ext) +{ + if (is_host_big_endian()) + return btf_ext->swapped_endian ? BTF_LITTLE_ENDIAN : BTF_BIG_ENDIAN; + else + return btf_ext->swapped_endian ? BTF_BIG_ENDIAN : BTF_LITTLE_ENDIAN; +} + +int btf_ext__set_endianness(struct btf_ext *btf_ext, enum btf_endianness endian) +{ + if (endian != BTF_LITTLE_ENDIAN && endian != BTF_BIG_ENDIAN) + return libbpf_err(-EINVAL); + + btf_ext->swapped_endian = is_host_big_endian() != (endian == BTF_BIG_ENDIAN); + + if (!btf_ext->swapped_endian) { + free(btf_ext->data_swapped); + btf_ext->data_swapped = NULL; + } + return 0; +} struct btf_dedup; diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h index 4e349ad79ee6..47ee8f6ac489 100644 --- a/tools/lib/bpf/btf.h +++ b/tools/lib/bpf/btf.h @@ -167,6 +167,9 @@ LIBBPF_API const char *btf__str_by_offset(const struct btf *btf, __u32 offset); LIBBPF_API struct btf_ext *btf_ext__new(const __u8 *data, __u32 size); LIBBPF_API void btf_ext__free(struct btf_ext *btf_ext); LIBBPF_API const void *btf_ext__raw_data(const struct btf_ext *btf_ext, __u32 *size); +LIBBPF_API enum btf_endianness btf_ext__endianness(const struct btf_ext *btf_ext); +LIBBPF_API int btf_ext__set_endianness(struct btf_ext *btf_ext, + enum btf_endianness endian); LIBBPF_API int btf__find_str(struct btf *btf, const char *s); LIBBPF_API int btf__add_str(struct btf *btf, const char *s); diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 0096e483f7eb..f40ccc2946e7 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -421,6 +421,8 @@ LIBBPF_1.5.0 { global: btf__distill_base; btf__relocate; + btf_ext__endianness; + btf_ext__set_endianness; bpf_map__autoattach; bpf_map__set_autoattach; bpf_object__token_fd; diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h index 8cda511a1982..182529360c84 100644 --- a/tools/lib/bpf/libbpf_internal.h +++ b/tools/lib/bpf/libbpf_internal.h @@ -10,6 +10,7 @@ #define __LIBBPF_LIBBPF_INTERNAL_H #include +#include #include #include #include @@ -484,6 +485,8 @@ struct btf_ext { struct btf_ext_header *hdr; void *data; }; + void *data_swapped; + bool swapped_endian; struct btf_ext_info func_info; struct btf_ext_info line_info; struct btf_ext_info core_relo_info; @@ -511,6 +514,32 @@ struct bpf_line_info_min { __u32 line_col; }; +/* Functions to byte-swap info records */ + +typedef void (*info_rec_bswap_fn)(void *); + +static inline void bpf_func_info_bswap(struct bpf_func_info *i) +{ + i->insn_off = bswap_32(i->insn_off); + i->type_id = bswap_32(i->type_id); +} + +static inline void bpf_line_info_bswap(struct bpf_line_info *i) +{ + i->insn_off = bswap_32(i->insn_off); + i->file_name_off = bswap_32(i->file_name_off); + i->line_off = bswap_32(i->line_off); + i->line_col = bswap_32(i->line_col); +} + +static inline void bpf_core_relo_bswap(struct bpf_core_relo *i) +{ + i->insn_off = bswap_32(i->insn_off); + i->type_id = bswap_32(i->type_id); + i->access_str_off = bswap_32(i->access_str_off); + i->kind = bswap_32(i->kind); +} + enum btf_field_iter_kind { BTF_FIELD_ITER_IDS, BTF_FIELD_ITER_STRS, -- cgit v1.2.3 From bcc60abd67c7741a065480df4875534f62f758b1 Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:44 -0700 Subject: libbpf: Support opening bpf objects of either endianness Allow bpf_object__open() to access files of either endianness, and convert included BPF programs to native byte-order in-memory for introspection. Loading BPF objects of non-native byte-order is still disallowed however. Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/26353c1a1887a54400e1acd6c138fa90c99cdd40.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/libbpf.c | 51 +++++++++++++++++++++++++++++++++-------- tools/lib/bpf/libbpf_internal.h | 10 ++++++++ 2 files changed, 52 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index a7cbb30605da..041228674bfa 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -694,6 +694,8 @@ struct bpf_object { /* Information when doing ELF related work. Only valid if efile.elf is not NULL */ struct elf_state efile; + unsigned char byteorder; + struct btf *btf; struct btf_ext *btf_ext; @@ -940,6 +942,20 @@ bpf_object__add_programs(struct bpf_object *obj, Elf_Data *sec_data, return 0; } +static void bpf_object_bswap_progs(struct bpf_object *obj) +{ + struct bpf_program *prog = obj->programs; + struct bpf_insn *insn; + int p, i; + + for (p = 0; p < obj->nr_programs; p++, prog++) { + insn = prog->insns; + for (i = 0; i < prog->insns_cnt; i++, insn++) + bpf_insn_bswap(insn); + } + pr_debug("converted %zu BPF programs to native byte order\n", obj->nr_programs); +} + static const struct btf_member * find_member_by_offset(const struct btf_type *t, __u32 bit_offset) { @@ -1506,6 +1522,7 @@ static void bpf_object__elf_finish(struct bpf_object *obj) elf_end(obj->efile.elf); obj->efile.elf = NULL; + obj->efile.ehdr = NULL; obj->efile.symbols = NULL; obj->efile.arena_data = NULL; @@ -1571,6 +1588,16 @@ static int bpf_object__elf_init(struct bpf_object *obj) goto errout; } + /* Validate ELF object endianness... */ + if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB && + ehdr->e_ident[EI_DATA] != ELFDATA2MSB) { + err = -LIBBPF_ERRNO__ENDIAN; + pr_warn("elf: '%s' has unknown byte order\n", obj->path); + goto errout; + } + /* and save after bpf_object_open() frees ELF data */ + obj->byteorder = ehdr->e_ident[EI_DATA]; + if (elf_getshdrstrndx(elf, &obj->efile.shstrndx)) { pr_warn("elf: failed to get section names section index for %s: %s\n", obj->path, elf_errmsg(-1)); @@ -1599,19 +1626,15 @@ errout: return err; } -static int bpf_object__check_endianness(struct bpf_object *obj) +static bool is_native_endianness(struct bpf_object *obj) { #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - if (obj->efile.ehdr->e_ident[EI_DATA] == ELFDATA2LSB) - return 0; + return obj->byteorder == ELFDATA2LSB; #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ - if (obj->efile.ehdr->e_ident[EI_DATA] == ELFDATA2MSB) - return 0; + return obj->byteorder == ELFDATA2MSB; #else # error "Unrecognized __BYTE_ORDER__" #endif - pr_warn("elf: endianness mismatch in %s.\n", obj->path); - return -LIBBPF_ERRNO__ENDIAN; } static int @@ -3954,6 +3977,10 @@ static int bpf_object__elf_collect(struct bpf_object *obj) return -LIBBPF_ERRNO__FORMAT; } + /* change BPF program insns to native endianness for introspection */ + if (!is_native_endianness(obj)) + bpf_object_bswap_progs(obj); + /* sort BPF programs by section name and in-section instruction offset * for faster search */ @@ -7997,7 +8024,6 @@ static struct bpf_object *bpf_object_open(const char *path, const void *obj_buf, } err = bpf_object__elf_init(obj); - err = err ? : bpf_object__check_endianness(obj); err = err ? : bpf_object__elf_collect(obj); err = err ? : bpf_object__collect_externs(obj); err = err ? : bpf_object_fixup_btf(obj); @@ -8503,8 +8529,15 @@ static int bpf_object_load(struct bpf_object *obj, int extra_log_level, const ch return libbpf_err(-EINVAL); } - if (obj->gen_loader) + /* Disallow kernel loading programs of non-native endianness but + * permit cross-endian creation of "light skeleton". + */ + if (obj->gen_loader) { bpf_gen__init(obj->gen_loader, extra_log_level, obj->nr_programs, obj->nr_maps); + } else if (!is_native_endianness(obj)) { + pr_warn("object '%s': loading non-native endianness is unsupported\n", obj->name); + return libbpf_err(-LIBBPF_ERRNO__ENDIAN); + } err = bpf_object_prepare_token(obj); err = err ? : bpf_object__probe_loading(obj); diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h index 182529360c84..de498e2dd6b0 100644 --- a/tools/lib/bpf/libbpf_internal.h +++ b/tools/lib/bpf/libbpf_internal.h @@ -617,6 +617,16 @@ static inline bool is_ldimm64_insn(struct bpf_insn *insn) return insn->code == (BPF_LD | BPF_IMM | BPF_DW); } +static inline void bpf_insn_bswap(struct bpf_insn *insn) +{ + __u8 tmp_reg = insn->dst_reg; + + insn->dst_reg = insn->src_reg; + insn->src_reg = tmp_reg; + insn->off = bswap_16(insn->off); + insn->imm = bswap_32(insn->imm); +} + /* Unconditionally dup FD, ensuring it doesn't use [0, 2] range. * Original FD is not closed or altered in any other way. * Preserves original FD value, if it's invalid (negative). -- cgit v1.2.3 From 0aed726cf6f97bfe11de693781504787857894b7 Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:45 -0700 Subject: libbpf: Support linking bpf objects of either endianness Allow static linking object files of either endianness, checking that input files have consistent byte-order, and setting output endianness from input. Linking requires in-memory processing of programs, relocations, sections, etc. in native endianness, and output conversion to target byte-order. This is enabled by built-in ELF translation and recent BTF/BTF.ext endianness functions. Further add local functions for swapping byte-order of sections containing BPF insns. Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/b47ca686d02664843fc99b96262fe3259650bc43.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/linker.c | 78 +++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 62 insertions(+), 16 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/linker.c b/tools/lib/bpf/linker.c index 6985ab0f1ca9..81dbbdd79a7c 100644 --- a/tools/lib/bpf/linker.c +++ b/tools/lib/bpf/linker.c @@ -135,6 +135,7 @@ struct bpf_linker { int fd; Elf *elf; Elf64_Ehdr *elf_hdr; + bool swapped_endian; /* Output sections metadata */ struct dst_sec *secs; @@ -324,13 +325,8 @@ static int init_output_elf(struct bpf_linker *linker, const char *file) linker->elf_hdr->e_machine = EM_BPF; linker->elf_hdr->e_type = ET_REL; -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - linker->elf_hdr->e_ident[EI_DATA] = ELFDATA2LSB; -#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ - linker->elf_hdr->e_ident[EI_DATA] = ELFDATA2MSB; -#else -#error "Unknown __BYTE_ORDER__" -#endif + /* Set unknown ELF endianness, assign later from input files */ + linker->elf_hdr->e_ident[EI_DATA] = ELFDATANONE; /* STRTAB */ /* initialize strset with an empty string to conform to ELF */ @@ -541,19 +537,21 @@ static int linker_load_obj_file(struct bpf_linker *linker, const char *filename, const struct bpf_linker_file_opts *opts, struct src_obj *obj) { -#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - const int host_endianness = ELFDATA2LSB; -#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ - const int host_endianness = ELFDATA2MSB; -#else -#error "Unknown __BYTE_ORDER__" -#endif int err = 0; Elf_Scn *scn; Elf_Data *data; Elf64_Ehdr *ehdr; Elf64_Shdr *shdr; struct src_sec *sec; + unsigned char obj_byteorder; + unsigned char link_byteorder = linker->elf_hdr->e_ident[EI_DATA]; +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + const unsigned char host_byteorder = ELFDATA2LSB; +#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + const unsigned char host_byteorder = ELFDATA2MSB; +#else +#error "Unknown __BYTE_ORDER__" +#endif pr_debug("linker: adding object file '%s'...\n", filename); @@ -579,11 +577,25 @@ static int linker_load_obj_file(struct bpf_linker *linker, const char *filename, pr_warn_elf("failed to get ELF header for %s", filename); return err; } - if (ehdr->e_ident[EI_DATA] != host_endianness) { + + /* Linker output endianness set by first input object */ + obj_byteorder = ehdr->e_ident[EI_DATA]; + if (obj_byteorder != ELFDATA2LSB && obj_byteorder != ELFDATA2MSB) { + err = -EOPNOTSUPP; + pr_warn("unknown byte order of ELF file %s\n", filename); + return err; + } + if (link_byteorder == ELFDATANONE) { + linker->elf_hdr->e_ident[EI_DATA] = obj_byteorder; + linker->swapped_endian = obj_byteorder != host_byteorder; + pr_debug("linker: set %s-endian output byte order\n", + obj_byteorder == ELFDATA2MSB ? "big" : "little"); + } else if (link_byteorder != obj_byteorder) { err = -EOPNOTSUPP; - pr_warn_elf("unsupported byte order of ELF file %s", filename); + pr_warn("byte order mismatch with ELF file %s\n", filename); return err; } + if (ehdr->e_type != ET_REL || ehdr->e_machine != EM_BPF || ehdr->e_ident[EI_CLASS] != ELFCLASS64) { @@ -1111,6 +1123,24 @@ static bool sec_content_is_same(struct dst_sec *dst_sec, struct src_sec *src_sec return true; } +static bool is_exec_sec(struct dst_sec *sec) +{ + if (!sec || sec->ephemeral) + return false; + return (sec->shdr->sh_type == SHT_PROGBITS) && + (sec->shdr->sh_flags & SHF_EXECINSTR); +} + +static void exec_sec_bswap(void *raw_data, int size) +{ + const int insn_cnt = size / sizeof(struct bpf_insn); + struct bpf_insn *insn = raw_data; + int i; + + for (i = 0; i < insn_cnt; i++, insn++) + bpf_insn_bswap(insn); +} + static int extend_sec(struct bpf_linker *linker, struct dst_sec *dst, struct src_sec *src) { void *tmp; @@ -1170,6 +1200,10 @@ static int extend_sec(struct bpf_linker *linker, struct dst_sec *dst, struct src memset(dst->raw_data + dst->sec_sz, 0, dst_align_sz - dst->sec_sz); /* now copy src data at a properly aligned offset */ memcpy(dst->raw_data + dst_align_sz, src->data->d_buf, src->shdr->sh_size); + + /* convert added bpf insns to native byte-order */ + if (linker->swapped_endian && is_exec_sec(dst)) + exec_sec_bswap(dst->raw_data + dst_align_sz, src->shdr->sh_size); } dst->sec_sz = dst_final_sz; @@ -2630,6 +2664,10 @@ int bpf_linker__finalize(struct bpf_linker *linker) if (!sec->scn) continue; + /* restore sections with bpf insns to target byte-order */ + if (linker->swapped_endian && is_exec_sec(sec)) + exec_sec_bswap(sec->raw_data, sec->sec_sz); + sec->data->d_buf = sec->raw_data; } @@ -2698,6 +2736,7 @@ static int emit_elf_data_sec(struct bpf_linker *linker, const char *sec_name, static int finalize_btf(struct bpf_linker *linker) { + enum btf_endianness link_endianness; LIBBPF_OPTS(btf_dedup_opts, opts); struct btf *btf = linker->btf; const void *raw_data; @@ -2742,6 +2781,13 @@ static int finalize_btf(struct bpf_linker *linker) return err; } + /* Set .BTF and .BTF.ext output byte order */ + link_endianness = linker->elf_hdr->e_ident[EI_DATA] == ELFDATA2MSB ? + BTF_BIG_ENDIAN : BTF_LITTLE_ENDIAN; + btf__set_endianness(linker->btf, link_endianness); + if (linker->btf_ext) + btf_ext__set_endianness(linker->btf_ext, link_endianness); + /* Emit .BTF section */ raw_data = btf__raw_data(linker->btf, &raw_sz); if (!raw_data) -- cgit v1.2.3 From 8ca3323dce43792b6a7bbbc3314fc2a281d3af92 Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:46 -0700 Subject: libbpf: Support creating light skeleton of either endianness Track target endianness in 'struct bpf_gen' and process in-memory data in native byte-order, but on finalization convert the embedded loader BPF insns to target endianness. The light skeleton also includes a target-accessed data blob which is heterogeneous and thus difficult to convert to target byte-order on finalization. Add support functions to convert data to target endianness as it is added to the blob. Also add additional debug logging for data blob structure details and skeleton loading. Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Acked-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/569562e1d5bf1cce80a1f1a3882461ee2da1ffd5.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/bpf_gen_internal.h | 1 + tools/lib/bpf/gen_loader.c | 187 ++++++++++++++++++++++++++++----------- tools/lib/bpf/libbpf.c | 1 + tools/lib/bpf/skel_internal.h | 3 +- 4 files changed, 139 insertions(+), 53 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/bpf_gen_internal.h b/tools/lib/bpf/bpf_gen_internal.h index fdf44403ff36..6ff963a491d9 100644 --- a/tools/lib/bpf/bpf_gen_internal.h +++ b/tools/lib/bpf/bpf_gen_internal.h @@ -34,6 +34,7 @@ struct bpf_gen { void *data_cur; void *insn_start; void *insn_cur; + bool swapped_endian; ssize_t cleanup_label; __u32 nr_progs; __u32 nr_maps; diff --git a/tools/lib/bpf/gen_loader.c b/tools/lib/bpf/gen_loader.c index cf3323fd47b8..8a2b0f62d91d 100644 --- a/tools/lib/bpf/gen_loader.c +++ b/tools/lib/bpf/gen_loader.c @@ -401,6 +401,15 @@ int bpf_gen__finish(struct bpf_gen *gen, int nr_progs, int nr_maps) opts->insns_sz = gen->insn_cur - gen->insn_start; opts->data = gen->data_start; opts->data_sz = gen->data_cur - gen->data_start; + + /* use target endianness for embedded loader */ + if (gen->swapped_endian) { + struct bpf_insn *insn = (struct bpf_insn *)opts->insns; + int insn_cnt = opts->insns_sz / sizeof(struct bpf_insn); + + for (i = 0; i < insn_cnt; i++) + bpf_insn_bswap(insn++); + } } return gen->error; } @@ -414,6 +423,28 @@ void bpf_gen__free(struct bpf_gen *gen) free(gen); } +/* + * Fields of bpf_attr are set to values in native byte-order before being + * written to the target-bound data blob, and may need endian conversion. + * This macro allows providing the correct value in situ more simply than + * writing a separate converter for *all fields* of *all records* included + * in union bpf_attr. Note that sizeof(rval) should match the assignment + * target to avoid runtime problems. + */ +#define tgt_endian(rval) ({ \ + typeof(rval) _val = (rval); \ + if (gen->swapped_endian) { \ + switch (sizeof(_val)) { \ + case 1: break; \ + case 2: _val = bswap_16(_val); break; \ + case 4: _val = bswap_32(_val); break; \ + case 8: _val = bswap_64(_val); break; \ + default: pr_warn("unsupported bswap size!\n"); \ + } \ + } \ + _val; \ +}) + void bpf_gen__load_btf(struct bpf_gen *gen, const void *btf_raw_data, __u32 btf_raw_size) { @@ -422,11 +453,12 @@ void bpf_gen__load_btf(struct bpf_gen *gen, const void *btf_raw_data, union bpf_attr attr; memset(&attr, 0, attr_size); - pr_debug("gen: load_btf: size %d\n", btf_raw_size); btf_data = add_data(gen, btf_raw_data, btf_raw_size); - attr.btf_size = btf_raw_size; + attr.btf_size = tgt_endian(btf_raw_size); btf_load_attr = add_data(gen, &attr, attr_size); + pr_debug("gen: load_btf: off %d size %d, attr: off %d size %d\n", + btf_data, btf_raw_size, btf_load_attr, attr_size); /* populate union bpf_attr with user provided log details */ move_ctx2blob(gen, attr_field(btf_load_attr, btf_log_level), 4, @@ -457,28 +489,29 @@ void bpf_gen__map_create(struct bpf_gen *gen, union bpf_attr attr; memset(&attr, 0, attr_size); - attr.map_type = map_type; - attr.key_size = key_size; - attr.value_size = value_size; - attr.map_flags = map_attr->map_flags; - attr.map_extra = map_attr->map_extra; + attr.map_type = tgt_endian(map_type); + attr.key_size = tgt_endian(key_size); + attr.value_size = tgt_endian(value_size); + attr.map_flags = tgt_endian(map_attr->map_flags); + attr.map_extra = tgt_endian(map_attr->map_extra); if (map_name) libbpf_strlcpy(attr.map_name, map_name, sizeof(attr.map_name)); - attr.numa_node = map_attr->numa_node; - attr.map_ifindex = map_attr->map_ifindex; - attr.max_entries = max_entries; - attr.btf_key_type_id = map_attr->btf_key_type_id; - attr.btf_value_type_id = map_attr->btf_value_type_id; - - pr_debug("gen: map_create: %s idx %d type %d value_type_id %d\n", - attr.map_name, map_idx, map_type, attr.btf_value_type_id); + attr.numa_node = tgt_endian(map_attr->numa_node); + attr.map_ifindex = tgt_endian(map_attr->map_ifindex); + attr.max_entries = tgt_endian(max_entries); + attr.btf_key_type_id = tgt_endian(map_attr->btf_key_type_id); + attr.btf_value_type_id = tgt_endian(map_attr->btf_value_type_id); map_create_attr = add_data(gen, &attr, attr_size); - if (attr.btf_value_type_id) + pr_debug("gen: map_create: %s idx %d type %d value_type_id %d, attr: off %d size %d\n", + map_name, map_idx, map_type, map_attr->btf_value_type_id, + map_create_attr, attr_size); + + if (map_attr->btf_value_type_id) /* populate union bpf_attr with btf_fd saved in the stack earlier */ move_stack2blob(gen, attr_field(map_create_attr, btf_fd), 4, stack_off(btf_fd)); - switch (attr.map_type) { + switch (map_type) { case BPF_MAP_TYPE_ARRAY_OF_MAPS: case BPF_MAP_TYPE_HASH_OF_MAPS: move_stack2blob(gen, attr_field(map_create_attr, inner_map_fd), 4, @@ -498,8 +531,8 @@ void bpf_gen__map_create(struct bpf_gen *gen, /* emit MAP_CREATE command */ emit_sys_bpf(gen, BPF_MAP_CREATE, map_create_attr, attr_size); debug_ret(gen, "map_create %s idx %d type %d value_size %d value_btf_id %d", - attr.map_name, map_idx, map_type, value_size, - attr.btf_value_type_id); + map_name, map_idx, map_type, value_size, + map_attr->btf_value_type_id); emit_check_err(gen); /* remember map_fd in the stack, if successful */ if (map_idx < 0) { @@ -784,12 +817,12 @@ log: emit_ksym_relo_log(gen, relo, kdesc->ref); } -static __u32 src_reg_mask(void) +static __u32 src_reg_mask(struct bpf_gen *gen) { -#if defined(__LITTLE_ENDIAN_BITFIELD) - return 0x0f; /* src_reg,dst_reg,... */ -#elif defined(__BIG_ENDIAN_BITFIELD) - return 0xf0; /* dst_reg,src_reg,... */ +#if defined(__LITTLE_ENDIAN_BITFIELD) /* src_reg,dst_reg,... */ + return gen->swapped_endian ? 0xf0 : 0x0f; +#elif defined(__BIG_ENDIAN_BITFIELD) /* dst_reg,src_reg,... */ + return gen->swapped_endian ? 0x0f : 0xf0; #else #error "Unsupported bit endianness, cannot proceed" #endif @@ -840,7 +873,7 @@ static void emit_relo_ksym_btf(struct bpf_gen *gen, struct ksym_relo_desc *relo, emit(gen, BPF_JMP_IMM(BPF_JA, 0, 0, 3)); clear_src_reg: /* clear bpf_object__relocate_data's src_reg assignment, otherwise we get a verifier failure */ - reg_mask = src_reg_mask(); + reg_mask = src_reg_mask(gen); emit(gen, BPF_LDX_MEM(BPF_B, BPF_REG_9, BPF_REG_8, offsetofend(struct bpf_insn, code))); emit(gen, BPF_ALU32_IMM(BPF_AND, BPF_REG_9, reg_mask)); emit(gen, BPF_STX_MEM(BPF_B, BPF_REG_8, BPF_REG_9, offsetofend(struct bpf_insn, code))); @@ -931,48 +964,94 @@ static void cleanup_relos(struct bpf_gen *gen, int insns) cleanup_core_relo(gen); } +/* Convert func, line, and core relo info blobs to target endianness */ +static void info_blob_bswap(struct bpf_gen *gen, int func_info, int line_info, + int core_relos, struct bpf_prog_load_opts *load_attr) +{ + struct bpf_func_info *fi = gen->data_start + func_info; + struct bpf_line_info *li = gen->data_start + line_info; + struct bpf_core_relo *cr = gen->data_start + core_relos; + int i; + + for (i = 0; i < load_attr->func_info_cnt; i++) + bpf_func_info_bswap(fi++); + + for (i = 0; i < load_attr->line_info_cnt; i++) + bpf_line_info_bswap(li++); + + for (i = 0; i < gen->core_relo_cnt; i++) + bpf_core_relo_bswap(cr++); +} + void bpf_gen__prog_load(struct bpf_gen *gen, enum bpf_prog_type prog_type, const char *prog_name, const char *license, struct bpf_insn *insns, size_t insn_cnt, struct bpf_prog_load_opts *load_attr, int prog_idx) { + int func_info_tot_sz = load_attr->func_info_cnt * + load_attr->func_info_rec_size; + int line_info_tot_sz = load_attr->line_info_cnt * + load_attr->line_info_rec_size; + int core_relo_tot_sz = gen->core_relo_cnt * + sizeof(struct bpf_core_relo); int prog_load_attr, license_off, insns_off, func_info, line_info, core_relos; int attr_size = offsetofend(union bpf_attr, core_relo_rec_size); union bpf_attr attr; memset(&attr, 0, attr_size); - pr_debug("gen: prog_load: type %d insns_cnt %zd progi_idx %d\n", - prog_type, insn_cnt, prog_idx); /* add license string to blob of bytes */ license_off = add_data(gen, license, strlen(license) + 1); /* add insns to blob of bytes */ insns_off = add_data(gen, insns, insn_cnt * sizeof(struct bpf_insn)); + pr_debug("gen: prog_load: prog_idx %d type %d insn off %d insns_cnt %zd license off %d\n", + prog_idx, prog_type, insns_off, insn_cnt, license_off); - attr.prog_type = prog_type; - attr.expected_attach_type = load_attr->expected_attach_type; - attr.attach_btf_id = load_attr->attach_btf_id; - attr.prog_ifindex = load_attr->prog_ifindex; - attr.kern_version = 0; - attr.insn_cnt = (__u32)insn_cnt; - attr.prog_flags = load_attr->prog_flags; - - attr.func_info_rec_size = load_attr->func_info_rec_size; - attr.func_info_cnt = load_attr->func_info_cnt; - func_info = add_data(gen, load_attr->func_info, - attr.func_info_cnt * attr.func_info_rec_size); + /* convert blob insns to target endianness */ + if (gen->swapped_endian) { + struct bpf_insn *insn = gen->data_start + insns_off; + int i; - attr.line_info_rec_size = load_attr->line_info_rec_size; - attr.line_info_cnt = load_attr->line_info_cnt; - line_info = add_data(gen, load_attr->line_info, - attr.line_info_cnt * attr.line_info_rec_size); + for (i = 0; i < insn_cnt; i++, insn++) + bpf_insn_bswap(insn); + } - attr.core_relo_rec_size = sizeof(struct bpf_core_relo); - attr.core_relo_cnt = gen->core_relo_cnt; - core_relos = add_data(gen, gen->core_relos, - attr.core_relo_cnt * attr.core_relo_rec_size); + attr.prog_type = tgt_endian(prog_type); + attr.expected_attach_type = tgt_endian(load_attr->expected_attach_type); + attr.attach_btf_id = tgt_endian(load_attr->attach_btf_id); + attr.prog_ifindex = tgt_endian(load_attr->prog_ifindex); + attr.kern_version = 0; + attr.insn_cnt = tgt_endian((__u32)insn_cnt); + attr.prog_flags = tgt_endian(load_attr->prog_flags); + + attr.func_info_rec_size = tgt_endian(load_attr->func_info_rec_size); + attr.func_info_cnt = tgt_endian(load_attr->func_info_cnt); + func_info = add_data(gen, load_attr->func_info, func_info_tot_sz); + pr_debug("gen: prog_load: func_info: off %d cnt %d rec size %d\n", + func_info, load_attr->func_info_cnt, + load_attr->func_info_rec_size); + + attr.line_info_rec_size = tgt_endian(load_attr->line_info_rec_size); + attr.line_info_cnt = tgt_endian(load_attr->line_info_cnt); + line_info = add_data(gen, load_attr->line_info, line_info_tot_sz); + pr_debug("gen: prog_load: line_info: off %d cnt %d rec size %d\n", + line_info, load_attr->line_info_cnt, + load_attr->line_info_rec_size); + + attr.core_relo_rec_size = tgt_endian((__u32)sizeof(struct bpf_core_relo)); + attr.core_relo_cnt = tgt_endian(gen->core_relo_cnt); + core_relos = add_data(gen, gen->core_relos, core_relo_tot_sz); + pr_debug("gen: prog_load: core_relos: off %d cnt %d rec size %zd\n", + core_relos, gen->core_relo_cnt, + sizeof(struct bpf_core_relo)); + + /* convert all info blobs to target endianness */ + if (gen->swapped_endian) + info_blob_bswap(gen, func_info, line_info, core_relos, load_attr); libbpf_strlcpy(attr.prog_name, prog_name, sizeof(attr.prog_name)); prog_load_attr = add_data(gen, &attr, attr_size); + pr_debug("gen: prog_load: attr: off %d size %d\n", + prog_load_attr, attr_size); /* populate union bpf_attr with a pointer to license */ emit_rel_store(gen, attr_field(prog_load_attr, license), license_off); @@ -1040,7 +1119,6 @@ void bpf_gen__map_update_elem(struct bpf_gen *gen, int map_idx, void *pvalue, int zero = 0; memset(&attr, 0, attr_size); - pr_debug("gen: map_update_elem: idx %d\n", map_idx); value = add_data(gen, pvalue, value_size); key = add_data(gen, &zero, sizeof(zero)); @@ -1068,6 +1146,8 @@ void bpf_gen__map_update_elem(struct bpf_gen *gen, int map_idx, void *pvalue, emit(gen, BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel)); map_update_attr = add_data(gen, &attr, attr_size); + pr_debug("gen: map_update_elem: idx %d, value: off %d size %d, attr: off %d size %d\n", + map_idx, value, value_size, map_update_attr, attr_size); move_blob2blob(gen, attr_field(map_update_attr, map_fd), 4, blob_fd_array_off(gen, map_idx)); emit_rel_store(gen, attr_field(map_update_attr, key), key); @@ -1084,14 +1164,16 @@ void bpf_gen__populate_outer_map(struct bpf_gen *gen, int outer_map_idx, int slo int attr_size = offsetofend(union bpf_attr, flags); int map_update_attr, key; union bpf_attr attr; + int tgt_slot; memset(&attr, 0, attr_size); - pr_debug("gen: populate_outer_map: outer %d key %d inner %d\n", - outer_map_idx, slot, inner_map_idx); - key = add_data(gen, &slot, sizeof(slot)); + tgt_slot = tgt_endian(slot); + key = add_data(gen, &tgt_slot, sizeof(tgt_slot)); map_update_attr = add_data(gen, &attr, attr_size); + pr_debug("gen: populate_outer_map: outer %d key %d inner %d, attr: off %d size %d\n", + outer_map_idx, slot, inner_map_idx, map_update_attr, attr_size); move_blob2blob(gen, attr_field(map_update_attr, map_fd), 4, blob_fd_array_off(gen, outer_map_idx)); emit_rel_store(gen, attr_field(map_update_attr, key), key); @@ -1112,8 +1194,9 @@ void bpf_gen__map_freeze(struct bpf_gen *gen, int map_idx) union bpf_attr attr; memset(&attr, 0, attr_size); - pr_debug("gen: map_freeze: idx %d\n", map_idx); map_freeze_attr = add_data(gen, &attr, attr_size); + pr_debug("gen: map_freeze: idx %d, attr: off %d size %d\n", + map_idx, map_freeze_attr, attr_size); move_blob2blob(gen, attr_field(map_freeze_attr, map_fd), 4, blob_fd_array_off(gen, map_idx)); /* emit MAP_FREEZE command */ diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 041228674bfa..712b95e8891b 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -9134,6 +9134,7 @@ int bpf_object__gen_loader(struct bpf_object *obj, struct gen_loader_opts *opts) if (!gen) return -ENOMEM; gen->opts = opts; + gen->swapped_endian = !is_native_endianness(obj); obj->gen_loader = gen; return 0; } diff --git a/tools/lib/bpf/skel_internal.h b/tools/lib/bpf/skel_internal.h index 0875452521e9..4d5fa079b5d6 100644 --- a/tools/lib/bpf/skel_internal.h +++ b/tools/lib/bpf/skel_internal.h @@ -351,10 +351,11 @@ static inline int bpf_load_and_run(struct bpf_load_and_run_opts *opts) attr.test.ctx_size_in = opts->ctx->sz; err = skel_sys_bpf(BPF_PROG_RUN, &attr, test_run_attr_sz); if (err < 0 || (int)attr.test.retval < 0) { - opts->errstr = "failed to execute loader prog"; if (err < 0) { + opts->errstr = "failed to execute loader prog"; set_err; } else { + opts->errstr = "error returned by loader prog"; err = (int)attr.test.retval; #ifndef __KERNEL__ errno = -err; -- cgit v1.2.3 From 5a63c33d6f00e1739944cea2f445819951610c7d Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Mon, 16 Sep 2024 01:37:47 -0700 Subject: selftests/bpf: Support cross-endian building Update Makefile build rules to compile BPF programs with target endianness rather than host byte-order. With recent changes, this allows building the full selftests/bpf suite hosted on x86_64 and targeting s390x or mips64eb for example. Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/880ccc6342cfc4d3c48b44f581e87adfbce2876e.1726475448.git.tony.ambardar@gmail.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/Makefile | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 365740f24d2e..e295e3df5ec6 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -445,6 +445,7 @@ endef IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - Date: Mon, 16 Sep 2024 02:17:10 -0700 Subject: bpf: __bpf_fastcall for bpf_get_smp_processor_id in uapi Since [1] kernel supports __bpf_fastcall attribute for helper function bpf_get_smp_processor_id(). Update uapi definition for this helper in order to have this attribute in the generated bpf_helper_defs.h [1] commit 91b7fbf3936f ("bpf, x86, riscv, arm: no_caller_saved_registers for bpf_get_smp_processor_id()") Signed-off-by: Eduard Zingerman Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240916091712.2929279-3-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov --- tools/include/uapi/linux/bpf.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 1fb3cb2636e6..7610883c8191 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -1970,6 +1970,8 @@ union bpf_attr { * program. * Return * The SMP id of the processor running the program. + * Attributes + * __bpf_fastcall * * long bpf_skb_store_bytes(struct sk_buff *skb, u32 offset, const void *from, u32 len, u64 flags) * Description -- cgit v1.2.3 From bf7ce5416f68db058ac7105902adf497b3ce4e8c Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Mon, 16 Sep 2024 02:17:12 -0700 Subject: bpftool: __bpf_fastcall for kfuncs marked with special decl_tag Generate __attribute__((bpf_fastcall)) for kfuncs marked with "bpf_fastcall" decl tag. E.g. for the following BTF: $ bpftool btf dump file vmlinux ... [A] FUNC 'bpf_rdonly_cast' type_id=... ... [B] DECL_TAG 'bpf_kfunc' type_id=A component_idx=-1 [C] DECL_TAG 'bpf_fastcall' type_id=A component_idx=-1 Generate the following vmlinux.h: #ifndef __VMLINUX_H__ #define __VMLINUX_H__ ... #ifndef __bpf_fastcall #if __has_attribute(bpf_fastcall) #define __bpf_fastcall __attribute__((bpf_fastcall)) #else #define __bpf_fastcall #endif #endif ... __bpf_fastcall extern void *bpf_rdonly_cast(...) ...; The "bpf_fastcall" / "bpf_kfunc" tags pair would generated by pahole when constructing vmlinux BTF. While at it, sort printed kfuncs by name for better vmlinux.h stability. Signed-off-by: Eduard Zingerman Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240916091712.2929279-5-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov --- tools/bpf/bpftool/btf.c | 98 ++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 88 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c index 7d2af1ff3c8d..547c1ccdce98 100644 --- a/tools/bpf/bpftool/btf.c +++ b/tools/bpf/bpftool/btf.c @@ -1,11 +1,15 @@ // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) /* Copyright (C) 2019 Facebook */ +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif #include #include #include #include #include +#include #include #include #include @@ -21,6 +25,7 @@ #include "main.h" #define KFUNC_DECL_TAG "bpf_kfunc" +#define FASTCALL_DECL_TAG "bpf_fastcall" static const char * const btf_kind_str[NR_BTF_KINDS] = { [BTF_KIND_UNKN] = "UNKNOWN", @@ -464,19 +469,59 @@ static int dump_btf_raw(const struct btf *btf, return 0; } +struct ptr_array { + __u32 cnt; + __u32 cap; + const void **elems; +}; + +static int ptr_array_push(const void *ptr, struct ptr_array *arr) +{ + __u32 new_cap; + void *tmp; + + if (arr->cnt == arr->cap) { + new_cap = (arr->cap ?: 16) * 2; + tmp = realloc(arr->elems, sizeof(*arr->elems) * new_cap); + if (!tmp) + return -ENOMEM; + arr->elems = tmp; + arr->cap = new_cap; + } + arr->elems[arr->cnt++] = ptr; + return 0; +} + +static void ptr_array_free(struct ptr_array *arr) +{ + free(arr->elems); +} + +static int cmp_kfuncs(const void *pa, const void *pb, void *ctx) +{ + struct btf *btf = ctx; + const struct btf_type *a = *(void **)pa; + const struct btf_type *b = *(void **)pb; + + return strcmp(btf__str_by_offset(btf, a->name_off), + btf__str_by_offset(btf, b->name_off)); +} + static int dump_btf_kfuncs(struct btf_dump *d, const struct btf *btf) { LIBBPF_OPTS(btf_dump_emit_type_decl_opts, opts); - int cnt = btf__type_cnt(btf); - int i; + __u32 cnt = btf__type_cnt(btf), i, j; + struct ptr_array fastcalls = {}; + struct ptr_array kfuncs = {}; + int err = 0; printf("\n/* BPF kfuncs */\n"); printf("#ifndef BPF_NO_KFUNC_PROTOTYPES\n"); for (i = 1; i < cnt; i++) { const struct btf_type *t = btf__type_by_id(btf, i); + const struct btf_type *ft; const char *name; - int err; if (!btf_is_decl_tag(t)) continue; @@ -484,27 +529,53 @@ static int dump_btf_kfuncs(struct btf_dump *d, const struct btf *btf) if (btf_decl_tag(t)->component_idx != -1) continue; - name = btf__name_by_offset(btf, t->name_off); - if (strncmp(name, KFUNC_DECL_TAG, sizeof(KFUNC_DECL_TAG))) + ft = btf__type_by_id(btf, t->type); + if (!btf_is_func(ft)) continue; - t = btf__type_by_id(btf, t->type); - if (!btf_is_func(t)) - continue; + name = btf__name_by_offset(btf, t->name_off); + if (strncmp(name, KFUNC_DECL_TAG, sizeof(KFUNC_DECL_TAG)) == 0) { + err = ptr_array_push(ft, &kfuncs); + if (err) + goto out; + } + + if (strncmp(name, FASTCALL_DECL_TAG, sizeof(FASTCALL_DECL_TAG)) == 0) { + err = ptr_array_push(ft, &fastcalls); + if (err) + goto out; + } + } + + /* Sort kfuncs by name for improved vmlinux.h stability */ + qsort_r(kfuncs.elems, kfuncs.cnt, sizeof(*kfuncs.elems), cmp_kfuncs, (void *)btf); + for (i = 0; i < kfuncs.cnt; i++) { + const struct btf_type *t = kfuncs.elems[i]; printf("extern "); + /* Assume small amount of fastcall kfuncs */ + for (j = 0; j < fastcalls.cnt; j++) { + if (fastcalls.elems[j] == t) { + printf("__bpf_fastcall "); + break; + } + } + opts.field_name = btf__name_by_offset(btf, t->name_off); err = btf_dump__emit_type_decl(d, t->type, &opts); if (err) - return err; + goto out; printf(" __weak __ksym;\n"); } printf("#endif\n\n"); - return 0; +out: + ptr_array_free(&fastcalls); + ptr_array_free(&kfuncs); + return err; } static void __printf(2, 0) btf_dump_printf(void *ctx, @@ -718,6 +789,13 @@ static int dump_btf_c(const struct btf *btf, printf("#ifndef __weak\n"); printf("#define __weak __attribute__((weak))\n"); printf("#endif\n\n"); + printf("#ifndef __bpf_fastcall\n"); + printf("#if __has_attribute(bpf_fastcall)\n"); + printf("#define __bpf_fastcall __attribute__((bpf_fastcall))\n"); + printf("#else\n"); + printf("#define __bpf_fastcall\n"); + printf("#endif\n"); + printf("#endif\n\n"); if (root_type_cnt) { for (i = 0; i < root_type_cnt; i++) { -- cgit v1.2.3 From a5da3d65681f86f582420b5aea49c1d9a7c7e51e Mon Sep 17 00:00:00 2001 From: Mykyta Yatsenko Date: Tue, 1 Oct 2024 00:15:22 +0100 Subject: selftests/bpf: Emit top frequent code lines in veristat Production BPF programs are increasing in number of instructions and states to the point, where optimising verification process for them is necessary to avoid running into instruction limit. Authors of those BPF programs need to analyze verifier output, for example, collecting the most frequent source code lines to understand which part of the program has the biggest verification cost. This patch introduces `--top-src-lines` flag in veristat. `--top-src-lines=N` makes veristat output N the most popular sorce code lines, parsed from verification log. An example of output: ``` sudo ./veristat --top-src-lines=2 bpf_flow.bpf.o Processing 'bpf_flow.bpf.o'... Top source lines (_dissect): 4: (bpf_helpers.h:161) asm volatile("r1 = %[ctx]\n\t" 4: (bpf_flow.c:155) if (iph && iph->ihl == 5 && ... ``` Signed-off-by: Mykyta Yatsenko Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240930231522.58650-1-mykyta.yatsenko5@gmail.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/veristat.c | 129 ++++++++++++++++++++++++++++++++- 1 file changed, 128 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/veristat.c b/tools/testing/selftests/bpf/veristat.c index 1ec5c4c47235..c8efd44590d9 100644 --- a/tools/testing/selftests/bpf/veristat.c +++ b/tools/testing/selftests/bpf/veristat.c @@ -179,6 +179,7 @@ static struct env { int files_skipped; int progs_processed; int progs_skipped; + int top_src_lines; } env; static int libbpf_print_fn(enum libbpf_print_level level, const char *format, va_list args) @@ -228,6 +229,7 @@ static const struct argp_option opts[] = { "Force frequent BPF verifier state checkpointing (set BPF_F_TEST_STATE_FREQ program flag)" }, { "test-reg-invariants", 'r', NULL, 0, "Force BPF verifier failure on register invariant violation (BPF_F_TEST_REG_INVARIANTS program flag)" }, + { "top-src-lines", 'S', "N", 0, "Emit N most frequent source code lines" }, {}, }; @@ -327,6 +329,14 @@ static error_t parse_arg(int key, char *arg, struct argp_state *state) return err; } break; + case 'S': + errno = 0; + env.top_src_lines = strtol(arg, NULL, 10); + if (errno) { + fprintf(stderr, "invalid top lines N specifier: %s\n", arg); + argp_usage(state); + } + break; case ARGP_KEY_ARG: tmp = realloc(env.filenames, (env.filename_cnt + 1) * sizeof(*env.filenames)); if (!tmp) @@ -854,6 +864,118 @@ static int parse_verif_log(char * const buf, size_t buf_sz, struct verif_stats * return 0; } +struct line_cnt { + char *line; + int cnt; +}; + +static int str_cmp(const void *a, const void *b) +{ + const char **str1 = (const char **)a; + const char **str2 = (const char **)b; + + return strcmp(*str1, *str2); +} + +static int line_cnt_cmp(const void *a, const void *b) +{ + const struct line_cnt *a_cnt = (const struct line_cnt *)a; + const struct line_cnt *b_cnt = (const struct line_cnt *)b; + + if (a_cnt->cnt != b_cnt->cnt) + return a_cnt->cnt < b_cnt->cnt ? -1 : 1; + return strcmp(a_cnt->line, b_cnt->line); +} + +static int print_top_src_lines(char * const buf, size_t buf_sz, const char *prog_name) +{ + int lines_cap = 0; + int lines_size = 0; + char **lines = NULL; + char *line = NULL; + char *state; + struct line_cnt *freq = NULL; + struct line_cnt *cur; + int unique_lines; + int err = 0; + int i; + + while ((line = strtok_r(line ? NULL : buf, "\n", &state))) { + if (strncmp(line, "; ", 2) != 0) + continue; + line += 2; + + if (lines_size == lines_cap) { + char **tmp; + + lines_cap = max(16, lines_cap * 2); + tmp = realloc(lines, lines_cap * sizeof(*tmp)); + if (!tmp) { + err = -ENOMEM; + goto cleanup; + } + lines = tmp; + } + lines[lines_size] = line; + lines_size++; + } + + if (lines_size == 0) + goto cleanup; + + qsort(lines, lines_size, sizeof(*lines), str_cmp); + + freq = calloc(lines_size, sizeof(*freq)); + if (!freq) { + err = -ENOMEM; + goto cleanup; + } + + cur = freq; + cur->line = lines[0]; + cur->cnt = 1; + for (i = 1; i < lines_size; ++i) { + if (strcmp(lines[i], cur->line) != 0) { + cur++; + cur->line = lines[i]; + cur->cnt = 0; + } + cur->cnt++; + } + unique_lines = cur - freq + 1; + + qsort(freq, unique_lines, sizeof(struct line_cnt), line_cnt_cmp); + + printf("Top source lines (%s):\n", prog_name); + for (i = 0; i < min(unique_lines, env.top_src_lines); ++i) { + const char *src_code = freq[i].line; + const char *src_line = NULL; + char *split = strrchr(freq[i].line, '@'); + + if (split) { + src_line = split + 1; + + while (*src_line && isspace(*src_line)) + src_line++; + + while (split > src_code && isspace(*split)) + split--; + *split = '\0'; + } + + if (src_line) + printf("%5d: (%s)\t%s\n", freq[i].cnt, src_line, src_code); + else + printf("%5d: %s\n", freq[i].cnt, src_code); + } + printf("\n"); + +cleanup: + free(freq); + free(lines); + return err; +} + static int guess_prog_type_by_ctx_name(const char *ctx_name, enum bpf_prog_type *prog_type, enum bpf_attach_type *attach_type) @@ -1009,13 +1131,16 @@ static int process_prog(const char *filename, struct bpf_object *obj, struct bpf stats = &env.prog_stats[env.prog_stat_cnt++]; memset(stats, 0, sizeof(*stats)); - if (env.verbose) { + if (env.verbose || env.top_src_lines > 0) { buf_sz = env.log_size ? env.log_size : 16 * 1024 * 1024; buf = malloc(buf_sz); if (!buf) return -ENOMEM; /* ensure we always request stats */ log_level = env.log_level | 4 | (env.log_fixed ? 8 : 0); + /* --top-src-lines needs verifier log */ + if (env.top_src_lines > 0 && env.log_level == 0) + log_level |= 2; } else { buf = verif_log_buf; buf_sz = sizeof(verif_log_buf); @@ -1048,6 +1173,8 @@ static int process_prog(const char *filename, struct bpf_object *obj, struct bpf filename, prog_name, stats->stats[DURATION], err ? "failure" : "success", buf); } + if (env.top_src_lines > 0) + print_top_src_lines(buf, buf_sz, stats->prog_name); if (verif_log_buf != buf) free(buf); -- cgit v1.2.3 From 7a2f671db61f32de0671eeb163a7764e5a258114 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:08 +0100 Subject: kselftest/arm64: Verify the GCS hwcap Add coverage of the GCS hwcap to the hwcap selftest, using a read of GCSPR_EL0 to generate SIGILL without having to worry about enabling GCS. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-29-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/abi/hwcap.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index f2d6007a2b98..1f07772ae578 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -98,6 +98,17 @@ static void fpmr_sigill(void) asm volatile("mrs x0, S3_3_C4_C4_2" : : : "x0"); } +static void gcs_sigill(void) +{ + unsigned long *gcspr; + + asm volatile( + "mrs %0, S3_3_C2_C5_1" + : "=r" (gcspr) + : + : "cc"); +} + static void ilrcpc_sigill(void) { /* LDAPUR W0, [SP, #8] */ @@ -534,6 +545,14 @@ static const struct hwcap_data { .sigill_fn = fpmr_sigill, .sigill_reliable = true, }, + { + .name = "GCS", + .at_hwcap = AT_HWCAP, + .hwcap_bit = HWCAP_GCS, + .cpuinfo = "gcs", + .sigill_fn = gcs_sigill, + .sigill_reliable = true, + }, { .name = "JSCVT", .at_hwcap = AT_HWCAP, -- cgit v1.2.3 From b2d2f11ff5d69cd4b3585ddab4bec9f69503f680 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:09 +0100 Subject: kselftest/arm64: Add GCS as a detected feature in the signal tests In preparation for testing GCS related signal handling add it as a feature we check for in the signal handling support code. Reviewed-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-30-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/signal/test_signals.h | 2 ++ tools/testing/selftests/arm64/signal/test_signals_utils.c | 3 +++ 2 files changed, 5 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/signal/test_signals.h b/tools/testing/selftests/arm64/signal/test_signals.h index 1e6273d81575..7ada43688c02 100644 --- a/tools/testing/selftests/arm64/signal/test_signals.h +++ b/tools/testing/selftests/arm64/signal/test_signals.h @@ -35,6 +35,7 @@ enum { FSME_BIT, FSME_FA64_BIT, FSME2_BIT, + FGCS_BIT, FMAX_END }; @@ -43,6 +44,7 @@ enum { #define FEAT_SME (1UL << FSME_BIT) #define FEAT_SME_FA64 (1UL << FSME_FA64_BIT) #define FEAT_SME2 (1UL << FSME2_BIT) +#define FEAT_GCS (1UL << FGCS_BIT) /* * A descriptor used to describe and configure a test case. diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.c b/tools/testing/selftests/arm64/signal/test_signals_utils.c index 0dc948db3a4a..dcc49e3ce1eb 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.c +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.c @@ -30,6 +30,7 @@ static char const *const feats_names[FMAX_END] = { " SME ", " FA64 ", " SME2 ", + " GCS ", }; #define MAX_FEATS_SZ 128 @@ -329,6 +330,8 @@ int test_init(struct tdescr *td) td->feats_supported |= FEAT_SME_FA64; if (getauxval(AT_HWCAP2) & HWCAP2_SME2) td->feats_supported |= FEAT_SME2; + if (getauxval(AT_HWCAP) & HWCAP_GCS) + td->feats_supported |= FEAT_GCS; if (feats_ok(td)) { if (td->feats_required & td->feats_supported) fprintf(stderr, -- cgit v1.2.3 From 0d426f7dd9a0d88aa39c1dd54a6bf10f0466c6b9 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:10 +0100 Subject: kselftest/arm64: Add framework support for GCS to signal handling tests Teach the framework about the GCS signal context, avoiding warnings on the unknown context. Reviewed-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-31-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/signal/testcases/testcases.c | 7 +++++++ tools/testing/selftests/arm64/signal/testcases/testcases.h | 1 + 2 files changed, 8 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.c b/tools/testing/selftests/arm64/signal/testcases/testcases.c index e6daa94fcd2e..0c1a6b26afac 100644 --- a/tools/testing/selftests/arm64/signal/testcases/testcases.c +++ b/tools/testing/selftests/arm64/signal/testcases/testcases.c @@ -198,6 +198,13 @@ bool validate_reserved(ucontext_t *uc, size_t resv_sz, char **err) *err = "Bad size for fpmr_context"; new_flags |= FPMR_CTX; break; + case GCS_MAGIC: + if (flags & GCS_CTX) + *err = "Multiple GCS_MAGIC"; + if (head->size != sizeof(struct gcs_context)) + *err = "Bad size for gcs_context"; + new_flags |= GCS_CTX; + break; case EXTRA_MAGIC: if (flags & EXTRA_CTX) *err = "Multiple EXTRA_MAGIC"; diff --git a/tools/testing/selftests/arm64/signal/testcases/testcases.h b/tools/testing/selftests/arm64/signal/testcases/testcases.h index 9872b8912714..98b97efdda23 100644 --- a/tools/testing/selftests/arm64/signal/testcases/testcases.h +++ b/tools/testing/selftests/arm64/signal/testcases/testcases.h @@ -20,6 +20,7 @@ #define EXTRA_CTX (1 << 3) #define ZT_CTX (1 << 4) #define FPMR_CTX (1 << 5) +#define GCS_CTX (1 << 6) #define KSFT_BAD_MAGIC 0xdeadbeef -- cgit v1.2.3 From 956573ac189066a32326245ebf5abf35b64a490f Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:11 +0100 Subject: kselftest/arm64: Allow signals tests to specify an expected si_code Currently we ignore si_code unless the expected signal is a SIGSEGV, in which case we enforce it being SEGV_ACCERR. Allow test cases to specify exactly which si_code should be generated so we can validate this, and test for other segfault codes. Reviewed-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-32-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- .../testing/selftests/arm64/signal/test_signals.h | 4 +++ .../selftests/arm64/signal/test_signals_utils.c | 29 ++++++++++++++-------- 2 files changed, 23 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/signal/test_signals.h b/tools/testing/selftests/arm64/signal/test_signals.h index 7ada43688c02..ee75a2c25ce7 100644 --- a/tools/testing/selftests/arm64/signal/test_signals.h +++ b/tools/testing/selftests/arm64/signal/test_signals.h @@ -71,6 +71,10 @@ struct tdescr { * Zero when no signal is expected on success */ int sig_ok; + /* + * expected si_code for sig_ok, or 0 to not check + */ + int sig_ok_code; /* signum expected on unsupported CPU features. */ int sig_unsupp; /* a timeout in second for test completion */ diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.c b/tools/testing/selftests/arm64/signal/test_signals_utils.c index dcc49e3ce1eb..5d3621921cfe 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.c +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.c @@ -143,16 +143,25 @@ static bool handle_signal_ok(struct tdescr *td, "current->token ZEROED...test is probably broken!\n"); abort(); } - /* - * Trying to narrow down the SEGV to the ones generated by Kernel itself - * via arm64_notify_segfault(). This is a best-effort check anyway, and - * the si_code check may need to change if this aspect of the kernel - * ABI changes. - */ - if (td->sig_ok == SIGSEGV && si->si_code != SEGV_ACCERR) { - fprintf(stdout, - "si_code != SEGV_ACCERR...test is probably broken!\n"); - abort(); + if (td->sig_ok_code) { + if (si->si_code != td->sig_ok_code) { + fprintf(stdout, "si_code is %d not %d\n", + si->si_code, td->sig_ok_code); + abort(); + } + } else { + /* + * Trying to narrow down the SEGV to the ones + * generated by Kernel itself via + * arm64_notify_segfault(). This is a best-effort + * check anyway, and the si_code check may need to + * change if this aspect of the kernel ABI changes. + */ + if (td->sig_ok == SIGSEGV && si->si_code != SEGV_ACCERR) { + fprintf(stdout, + "si_code != SEGV_ACCERR...test is probably broken!\n"); + abort(); + } } td->pass = 1; /* -- cgit v1.2.3 From 42155a8eb0f63f634a98ad17a85e9f2826bcff11 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:12 +0100 Subject: kselftest/arm64: Always run signals tests with GCS enabled Since it is not possible to return from the function that enabled GCS without disabling GCS it is very inconvenient to use the signal handling tests to cover GCS when GCS is not enabled by the toolchain and runtime, something that no current distribution does. Since none of the testcases do anything with stacks that would cause problems with GCS we can sidestep this issue by unconditionally enabling GCS on startup and exiting with a call to exit() rather than a return from main(). Reviewed-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-33-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- .../testing/selftests/arm64/signal/test_signals.c | 17 ++++++++++++- .../selftests/arm64/signal/test_signals_utils.h | 29 ++++++++++++++++++++++ 2 files changed, 45 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/signal/test_signals.c b/tools/testing/selftests/arm64/signal/test_signals.c index 00051b40d71e..1304c8ec0f2f 100644 --- a/tools/testing/selftests/arm64/signal/test_signals.c +++ b/tools/testing/selftests/arm64/signal/test_signals.c @@ -7,6 +7,10 @@ * Each test provides its own tde struct tdescr descriptor to link with * this wrapper. Framework provides common helpers. */ + +#include +#include + #include #include "test_signals.h" @@ -16,6 +20,16 @@ struct tdescr *current = &tde; int main(int argc, char *argv[]) { + /* + * Ensure GCS is at least enabled throughout the tests if + * supported, otherwise the inability to return from the + * function that enabled GCS makes it very inconvenient to set + * up test cases. The prctl() may fail if GCS was locked by + * libc setup code. + */ + if (getauxval(AT_HWCAP) & HWCAP_GCS) + gcs_set_state(PR_SHADOW_STACK_ENABLE); + ksft_print_msg("%s :: %s\n", current->name, current->descr); if (test_setup(current) && test_init(current)) { test_run(current); @@ -23,5 +37,6 @@ int main(int argc, char *argv[]) } test_result(current); - return current->result; + /* Do not return in case GCS was enabled */ + exit(current->result); } diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.h b/tools/testing/selftests/arm64/signal/test_signals_utils.h index 762c8fe9c54a..1e80808ee105 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.h +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.h @@ -18,6 +18,35 @@ void test_cleanup(struct tdescr *td); int test_run(struct tdescr *td); void test_result(struct tdescr *td); +#ifndef __NR_prctl +#define __NR_prctl 167 +#endif + +/* + * The prctl takes 1 argument but we need to ensure that the other + * values passed in registers to the syscall are zero since the kernel + * validates them. + */ +#define gcs_set_state(state) \ + ({ \ + register long _num __asm__ ("x8") = __NR_prctl; \ + register long _arg1 __asm__ ("x0") = PR_SET_SHADOW_STACK_STATUS; \ + register long _arg2 __asm__ ("x1") = (long)(state); \ + register long _arg3 __asm__ ("x2") = 0; \ + register long _arg4 __asm__ ("x3") = 0; \ + register long _arg5 __asm__ ("x4") = 0; \ + \ + __asm__ volatile ( \ + "svc #0\n" \ + : "=r"(_arg1) \ + : "r"(_arg1), "r"(_arg2), \ + "r"(_arg3), "r"(_arg4), \ + "r"(_arg5), "r"(_num) \ + : "memory", "cc" \ + ); \ + _arg1; \ + }) + static inline bool feats_ok(struct tdescr *td) { if (td->feats_incompatible & td->feats_supported) -- cgit v1.2.3 From 3d37d4307e0fc958c4461bb6973ce5573d1570c2 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:13 +0100 Subject: kselftest/arm64: Add very basic GCS test program This test program just covers the basic GCS ABI, covering aspects of the ABI as standalone features without attempting to integrate things. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-34-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/Makefile | 2 +- tools/testing/selftests/arm64/gcs/.gitignore | 1 + tools/testing/selftests/arm64/gcs/Makefile | 18 ++ tools/testing/selftests/arm64/gcs/basic-gcs.c | 357 ++++++++++++++++++++++++++ tools/testing/selftests/arm64/gcs/gcs-util.h | 90 +++++++ 5 files changed, 467 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/arm64/gcs/.gitignore create mode 100644 tools/testing/selftests/arm64/gcs/Makefile create mode 100644 tools/testing/selftests/arm64/gcs/basic-gcs.c create mode 100644 tools/testing/selftests/arm64/gcs/gcs-util.h (limited to 'tools') diff --git a/tools/testing/selftests/arm64/Makefile b/tools/testing/selftests/arm64/Makefile index 28b93cab8c0d..22029e60eff3 100644 --- a/tools/testing/selftests/arm64/Makefile +++ b/tools/testing/selftests/arm64/Makefile @@ -4,7 +4,7 @@ ARCH ?= $(shell uname -m 2>/dev/null || echo not) ifneq (,$(filter $(ARCH),aarch64 arm64)) -ARM64_SUBTARGETS ?= tags signal pauth fp mte bti abi +ARM64_SUBTARGETS ?= tags signal pauth fp mte bti abi gcs else ARM64_SUBTARGETS := endif diff --git a/tools/testing/selftests/arm64/gcs/.gitignore b/tools/testing/selftests/arm64/gcs/.gitignore new file mode 100644 index 000000000000..0e5e695ecba5 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/.gitignore @@ -0,0 +1 @@ +basic-gcs diff --git a/tools/testing/selftests/arm64/gcs/Makefile b/tools/testing/selftests/arm64/gcs/Makefile new file mode 100644 index 000000000000..61a30f483429 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/Makefile @@ -0,0 +1,18 @@ +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2023 ARM Limited +# +# In order to avoid interaction with the toolchain and dynamic linker the +# portions of these tests that interact with the GCS are implemented using +# nolibc. +# + +TEST_GEN_PROGS := basic-gcs + +include ../../lib.mk + +$(OUTPUT)/basic-gcs: basic-gcs.c + $(CC) -g -fno-asynchronous-unwind-tables -fno-ident -s -Os -nostdlib \ + -static -include ../../../../include/nolibc/nolibc.h \ + -I../../../../../usr/include \ + -std=gnu99 -I../.. -g \ + -ffreestanding -Wall $^ -o $@ -lgcc diff --git a/tools/testing/selftests/arm64/gcs/basic-gcs.c b/tools/testing/selftests/arm64/gcs/basic-gcs.c new file mode 100644 index 000000000000..3fb9742342a3 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/basic-gcs.c @@ -0,0 +1,357 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2023 ARM Limited. + */ + +#include +#include + +#include + +#include +#include +#include + +#include "kselftest.h" +#include "gcs-util.h" + +/* nolibc doesn't have sysconf(), just hard code the maximum */ +static size_t page_size = 65536; + +static __attribute__((noinline)) void valid_gcs_function(void) +{ + /* Do something the compiler can't optimise out */ + my_syscall1(__NR_prctl, PR_SVE_GET_VL); +} + +static inline int gcs_set_status(unsigned long mode) +{ + bool enabling = mode & PR_SHADOW_STACK_ENABLE; + int ret; + unsigned long new_mode; + + /* + * The prctl takes 1 argument but we need to ensure that the + * other 3 values passed in registers to the syscall are zero + * since the kernel validates them. + */ + ret = my_syscall5(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, mode, + 0, 0, 0); + + if (ret == 0) { + ret = my_syscall5(__NR_prctl, PR_GET_SHADOW_STACK_STATUS, + &new_mode, 0, 0, 0); + if (ret == 0) { + if (new_mode != mode) { + ksft_print_msg("Mode set to %lx not %lx\n", + new_mode, mode); + ret = -EINVAL; + } + } else { + ksft_print_msg("Failed to validate mode: %d\n", ret); + } + + if (enabling != chkfeat_gcs()) { + ksft_print_msg("%senabled by prctl but %senabled in CHKFEAT\n", + enabling ? "" : "not ", + chkfeat_gcs() ? "" : "not "); + ret = -EINVAL; + } + } + + return ret; +} + +/* Try to read the status */ +static bool read_status(void) +{ + unsigned long state; + int ret; + + ret = my_syscall5(__NR_prctl, PR_GET_SHADOW_STACK_STATUS, + &state, 0, 0, 0); + if (ret != 0) { + ksft_print_msg("Failed to read state: %d\n", ret); + return false; + } + + return state & PR_SHADOW_STACK_ENABLE; +} + +/* Just a straight enable */ +static bool base_enable(void) +{ + int ret; + + ret = gcs_set_status(PR_SHADOW_STACK_ENABLE); + if (ret) { + ksft_print_msg("PR_SHADOW_STACK_ENABLE failed %d\n", ret); + return false; + } + + return true; +} + +/* Check we can read GCSPR_EL0 when GCS is enabled */ +static bool read_gcspr_el0(void) +{ + unsigned long *gcspr_el0; + + ksft_print_msg("GET GCSPR\n"); + gcspr_el0 = get_gcspr(); + ksft_print_msg("GCSPR_EL0 is %p\n", gcspr_el0); + + return true; +} + +/* Also allow writes to stack */ +static bool enable_writeable(void) +{ + int ret; + + ret = gcs_set_status(PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_WRITE); + if (ret) { + ksft_print_msg("PR_SHADOW_STACK_ENABLE writeable failed: %d\n", ret); + return false; + } + + ret = gcs_set_status(PR_SHADOW_STACK_ENABLE); + if (ret) { + ksft_print_msg("failed to restore plain enable %d\n", ret); + return false; + } + + return true; +} + +/* Also allow writes to stack */ +static bool enable_push_pop(void) +{ + int ret; + + ret = gcs_set_status(PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_PUSH); + if (ret) { + ksft_print_msg("PR_SHADOW_STACK_ENABLE with push failed: %d\n", + ret); + return false; + } + + ret = gcs_set_status(PR_SHADOW_STACK_ENABLE); + if (ret) { + ksft_print_msg("failed to restore plain enable %d\n", ret); + return false; + } + + return true; +} + +/* Enable GCS and allow everything */ +static bool enable_all(void) +{ + int ret; + + ret = gcs_set_status(PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_PUSH | + PR_SHADOW_STACK_WRITE); + if (ret) { + ksft_print_msg("PR_SHADOW_STACK_ENABLE with everything failed: %d\n", + ret); + return false; + } + + ret = gcs_set_status(PR_SHADOW_STACK_ENABLE); + if (ret) { + ksft_print_msg("failed to restore plain enable %d\n", ret); + return false; + } + + return true; +} + +static bool enable_invalid(void) +{ + int ret = gcs_set_status(ULONG_MAX); + if (ret == 0) { + ksft_print_msg("GCS_SET_STATUS %lx succeeded\n", ULONG_MAX); + return false; + } + + return true; +} + +/* Map a GCS */ +static bool map_guarded_stack(void) +{ + int ret; + uint64_t *buf; + uint64_t expected_cap; + int elem; + bool pass = true; + + buf = (void *)my_syscall3(__NR_map_shadow_stack, 0, page_size, + SHADOW_STACK_SET_MARKER | + SHADOW_STACK_SET_TOKEN); + if (buf == MAP_FAILED) { + ksft_print_msg("Failed to map %lu byte GCS: %d\n", + page_size, errno); + return false; + } + ksft_print_msg("Mapped GCS at %p-%p\n", buf, + (void *)((uint64_t)buf + page_size)); + + /* The top of the newly allocated region should be 0 */ + elem = (page_size / sizeof(uint64_t)) - 1; + if (buf[elem]) { + ksft_print_msg("Last entry is 0x%llx not 0x0\n", buf[elem]); + pass = false; + } + + /* Then a valid cap token */ + elem--; + expected_cap = ((uint64_t)buf + page_size - 16); + expected_cap &= GCS_CAP_ADDR_MASK; + expected_cap |= GCS_CAP_VALID_TOKEN; + if (buf[elem] != expected_cap) { + ksft_print_msg("Cap entry is 0x%llx not 0x%llx\n", + buf[elem], expected_cap); + pass = false; + } + ksft_print_msg("cap token is 0x%llx\n", buf[elem]); + + /* The rest should be zeros */ + for (elem = 0; elem < page_size / sizeof(uint64_t) - 2; elem++) { + if (!buf[elem]) + continue; + ksft_print_msg("GCS slot %d is 0x%llx not 0x0\n", + elem, buf[elem]); + pass = false; + } + + ret = munmap(buf, page_size); + if (ret != 0) { + ksft_print_msg("Failed to unmap %ld byte GCS: %d\n", + page_size, errno); + pass = false; + } + + return pass; +} + +/* A fork()ed process can run */ +static bool test_fork(void) +{ + unsigned long child_mode; + int ret, status; + pid_t pid; + bool pass = true; + + pid = fork(); + if (pid == -1) { + ksft_print_msg("fork() failed: %d\n", errno); + pass = false; + goto out; + } + if (pid == 0) { + /* In child, make sure we can call a function, read + * the GCS pointer and status and then exit */ + valid_gcs_function(); + get_gcspr(); + + ret = my_syscall5(__NR_prctl, PR_GET_SHADOW_STACK_STATUS, + &child_mode, 0, 0, 0); + if (ret == 0 && !(child_mode & PR_SHADOW_STACK_ENABLE)) { + ksft_print_msg("GCS not enabled in child\n"); + ret = -EINVAL; + } + + exit(ret); + } + + /* + * In parent, check we can still do function calls then block + * for the child. + */ + valid_gcs_function(); + + ksft_print_msg("Waiting for child %d\n", pid); + + ret = waitpid(pid, &status, 0); + if (ret == -1) { + ksft_print_msg("Failed to wait for child: %d\n", + errno); + return false; + } + + if (!WIFEXITED(status)) { + ksft_print_msg("Child exited due to signal %d\n", + WTERMSIG(status)); + pass = false; + } else { + if (WEXITSTATUS(status)) { + ksft_print_msg("Child exited with status %d\n", + WEXITSTATUS(status)); + pass = false; + } + } + +out: + + return pass; +} + +typedef bool (*gcs_test)(void); + +static struct { + char *name; + gcs_test test; + bool needs_enable; +} tests[] = { + { "read_status", read_status }, + { "base_enable", base_enable, true }, + { "read_gcspr_el0", read_gcspr_el0 }, + { "enable_writeable", enable_writeable, true }, + { "enable_push_pop", enable_push_pop, true }, + { "enable_all", enable_all, true }, + { "enable_invalid", enable_invalid, true }, + { "map_guarded_stack", map_guarded_stack }, + { "fork", test_fork }, +}; + +int main(void) +{ + int i, ret; + unsigned long gcs_mode; + + ksft_print_header(); + + /* + * We don't have getauxval() with nolibc so treat a failure to + * read GCS state as a lack of support and skip. + */ + ret = my_syscall5(__NR_prctl, PR_GET_SHADOW_STACK_STATUS, + &gcs_mode, 0, 0, 0); + if (ret != 0) + ksft_exit_skip("Failed to read GCS state: %d\n", ret); + + if (!(gcs_mode & PR_SHADOW_STACK_ENABLE)) { + gcs_mode = PR_SHADOW_STACK_ENABLE; + ret = my_syscall5(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, + gcs_mode, 0, 0, 0); + if (ret != 0) + ksft_exit_fail_msg("Failed to enable GCS: %d\n", ret); + } + + ksft_set_plan(ARRAY_SIZE(tests)); + + for (i = 0; i < ARRAY_SIZE(tests); i++) { + ksft_test_result((*tests[i].test)(), "%s\n", tests[i].name); + } + + /* One last test: disable GCS, we can do this one time */ + my_syscall5(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, 0, 0, 0, 0); + if (ret != 0) + ksft_print_msg("Failed to disable GCS: %d\n", ret); + + ksft_finished(); + + return 0; +} diff --git a/tools/testing/selftests/arm64/gcs/gcs-util.h b/tools/testing/selftests/arm64/gcs/gcs-util.h new file mode 100644 index 000000000000..1ae6864d3f86 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/gcs-util.h @@ -0,0 +1,90 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2023 ARM Limited. + */ + +#ifndef GCS_UTIL_H +#define GCS_UTIL_H + +#include + +#ifndef __NR_map_shadow_stack +#define __NR_map_shadow_stack 453 +#endif + +#ifndef __NR_prctl +#define __NR_prctl 167 +#endif + +/* Shadow Stack/Guarded Control Stack interface */ +#define PR_GET_SHADOW_STACK_STATUS 74 +#define PR_SET_SHADOW_STACK_STATUS 75 +#define PR_LOCK_SHADOW_STACK_STATUS 76 + +# define PR_SHADOW_STACK_ENABLE (1UL << 0) +# define PR_SHADOW_STACK_WRITE (1UL << 1) +# define PR_SHADOW_STACK_PUSH (1UL << 2) + +#define PR_SHADOW_STACK_ALL_MODES \ + PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_WRITE | PR_SHADOW_STACK_PUSH + +#define SHADOW_STACK_SET_TOKEN (1ULL << 0) /* Set up a restore token in the shadow stack */ +#define SHADOW_STACK_SET_MARKER (1ULL << 1) /* Set up a top of stack merker in the shadow stack */ + +#define GCS_CAP_ADDR_MASK (0xfffffffffffff000UL) +#define GCS_CAP_TOKEN_MASK (0x0000000000000fffUL) +#define GCS_CAP_VALID_TOKEN 1 +#define GCS_CAP_IN_PROGRESS_TOKEN 5 + +#define GCS_CAP(x) (((unsigned long)(x) & GCS_CAP_ADDR_MASK) | \ + GCS_CAP_VALID_TOKEN) + +static inline unsigned long *get_gcspr(void) +{ + unsigned long *gcspr; + + asm volatile( + "mrs %0, S3_3_C2_C5_1" + : "=r" (gcspr) + : + : "cc"); + + return gcspr; +} + +static inline void __attribute__((always_inline)) gcsss1(unsigned long *Xt) +{ + asm volatile ( + "sys #3, C7, C7, #2, %0\n" + : + : "rZ" (Xt) + : "memory"); +} + +static inline unsigned long __attribute__((always_inline)) *gcsss2(void) +{ + unsigned long *Xt; + + asm volatile( + "SYSL %0, #3, C7, C7, #3\n" + : "=r" (Xt) + : + : "memory"); + + return Xt; +} + +static inline bool chkfeat_gcs(void) +{ + register long val __asm__ ("x16") = 1; + + /* CHKFEAT x16 */ + asm volatile( + "hint #0x28\n" + : "=r" (val) + : "r" (val)); + + return val != 1; +} + +#endif -- cgit v1.2.3 From a505a52b4e292f5e031a01eb3d4e203eb18acb7d Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:14 +0100 Subject: kselftest/arm64: Add a GCS test program built with the system libc There are things like threads which nolibc struggles with which we want to add coverage for, and the ABI allows us to test most of these even if libc itself does not understand GCS so add a test application built using the system libc. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-35-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/gcs/.gitignore | 1 + tools/testing/selftests/arm64/gcs/Makefile | 4 +- tools/testing/selftests/arm64/gcs/gcs-util.h | 10 + tools/testing/selftests/arm64/gcs/libc-gcs.c | 728 +++++++++++++++++++++++++++ 4 files changed, 742 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/arm64/gcs/libc-gcs.c (limited to 'tools') diff --git a/tools/testing/selftests/arm64/gcs/.gitignore b/tools/testing/selftests/arm64/gcs/.gitignore index 0e5e695ecba5..5810c4a163d4 100644 --- a/tools/testing/selftests/arm64/gcs/.gitignore +++ b/tools/testing/selftests/arm64/gcs/.gitignore @@ -1 +1,2 @@ basic-gcs +libc-gcs diff --git a/tools/testing/selftests/arm64/gcs/Makefile b/tools/testing/selftests/arm64/gcs/Makefile index 61a30f483429..a8fdf21e9a47 100644 --- a/tools/testing/selftests/arm64/gcs/Makefile +++ b/tools/testing/selftests/arm64/gcs/Makefile @@ -6,7 +6,9 @@ # nolibc. # -TEST_GEN_PROGS := basic-gcs +TEST_GEN_PROGS := basic-gcs libc-gcs + +LDLIBS+=-lpthread include ../../lib.mk diff --git a/tools/testing/selftests/arm64/gcs/gcs-util.h b/tools/testing/selftests/arm64/gcs/gcs-util.h index 1ae6864d3f86..c99a6b39ac14 100644 --- a/tools/testing/selftests/arm64/gcs/gcs-util.h +++ b/tools/testing/selftests/arm64/gcs/gcs-util.h @@ -16,6 +16,16 @@ #define __NR_prctl 167 #endif +#ifndef NT_ARM_GCS +#define NT_ARM_GCS 0x410 + +struct user_gcs { + __u64 features_enabled; + __u64 features_locked; + __u64 gcspr_el0; +}; +#endif + /* Shadow Stack/Guarded Control Stack interface */ #define PR_GET_SHADOW_STACK_STATUS 74 #define PR_SET_SHADOW_STACK_STATUS 75 diff --git a/tools/testing/selftests/arm64/gcs/libc-gcs.c b/tools/testing/selftests/arm64/gcs/libc-gcs.c new file mode 100644 index 000000000000..17b2fabfec38 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/libc-gcs.c @@ -0,0 +1,728 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2023 ARM Limited. + */ + +#define _GNU_SOURCE + +#include +#include + +#include +#include +#include +#include +#include + +#include +#include + +#include + +#include "kselftest_harness.h" + +#include "gcs-util.h" + +#define my_syscall2(num, arg1, arg2) \ +({ \ + register long _num __asm__ ("x8") = (num); \ + register long _arg1 __asm__ ("x0") = (long)(arg1); \ + register long _arg2 __asm__ ("x1") = (long)(arg2); \ + register long _arg3 __asm__ ("x2") = 0; \ + register long _arg4 __asm__ ("x3") = 0; \ + register long _arg5 __asm__ ("x4") = 0; \ + \ + __asm__ volatile ( \ + "svc #0\n" \ + : "=r"(_arg1) \ + : "r"(_arg1), "r"(_arg2), \ + "r"(_arg3), "r"(_arg4), \ + "r"(_arg5), "r"(_num) \ + : "memory", "cc" \ + ); \ + _arg1; \ +}) + +static noinline void gcs_recurse(int depth) +{ + if (depth) + gcs_recurse(depth - 1); + + /* Prevent tail call optimization so we actually recurse */ + asm volatile("dsb sy" : : : "memory"); +} + +/* Smoke test that a function call and return works*/ +TEST(can_call_function) +{ + gcs_recurse(0); +} + +static void *gcs_test_thread(void *arg) +{ + int ret; + unsigned long mode; + + /* + * Some libcs don't seem to fill unused arguments with 0 but + * the kernel validates this so we supply all 5 arguments. + */ + ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); + if (ret != 0) { + ksft_print_msg("PR_GET_SHADOW_STACK_STATUS failed: %d\n", ret); + return NULL; + } + + if (!(mode & PR_SHADOW_STACK_ENABLE)) { + ksft_print_msg("GCS not enabled in thread, mode is %lu\n", + mode); + return NULL; + } + + /* Just in case... */ + gcs_recurse(0); + + /* Use a non-NULL value to indicate a pass */ + return &gcs_test_thread; +} + +/* Verify that if we start a new thread it has GCS enabled */ +TEST(gcs_enabled_thread) +{ + pthread_t thread; + void *thread_ret; + int ret; + + ret = pthread_create(&thread, NULL, gcs_test_thread, NULL); + ASSERT_TRUE(ret == 0); + if (ret != 0) + return; + + ret = pthread_join(thread, &thread_ret); + ASSERT_TRUE(ret == 0); + if (ret != 0) + return; + + ASSERT_TRUE(thread_ret != NULL); +} + +/* Read the GCS until we find the terminator */ +TEST(gcs_find_terminator) +{ + unsigned long *gcs, *cur; + + gcs = get_gcspr(); + cur = gcs; + while (*cur) + cur++; + + ksft_print_msg("GCS in use from %p-%p\n", gcs, cur); + + /* + * We should have at least whatever called into this test so + * the two pointer should differ. + */ + ASSERT_TRUE(gcs != cur); +} + +/* + * We can access a GCS via ptrace + * + * This could usefully have a fixture but note that each test is + * fork()ed into a new child whcih causes issues. Might be better to + * lift at least some of this out into a separate, non-harness, test + * program. + */ +TEST(ptrace_read_write) +{ + pid_t child, pid; + int ret, status; + siginfo_t si; + uint64_t val, rval, gcspr; + struct user_gcs child_gcs; + struct iovec iov, local_iov, remote_iov; + + child = fork(); + if (child == -1) { + ksft_print_msg("fork() failed: %d (%s)\n", + errno, strerror(errno)); + ASSERT_NE(child, -1); + } + + if (child == 0) { + /* + * In child, make sure there's something on the stack and + * ask to be traced. + */ + gcs_recurse(0); + if (ptrace(PTRACE_TRACEME, -1, NULL, NULL)) + ksft_exit_fail_msg("PTRACE_TRACEME %s", + strerror(errno)); + + if (raise(SIGSTOP)) + ksft_exit_fail_msg("raise(SIGSTOP) %s", + strerror(errno)); + + return; + } + + ksft_print_msg("Child: %d\n", child); + + /* Attach to the child */ + while (1) { + int sig; + + pid = wait(&status); + if (pid == -1) { + ksft_print_msg("wait() failed: %s", + strerror(errno)); + goto error; + } + + /* + * This should never happen but it's hard to flag in + * the framework. + */ + if (pid != child) + continue; + + if (WIFEXITED(status) || WIFSIGNALED(status)) + ksft_exit_fail_msg("Child died unexpectedly\n"); + + if (!WIFSTOPPED(status)) + goto error; + + sig = WSTOPSIG(status); + + if (ptrace(PTRACE_GETSIGINFO, pid, NULL, &si)) { + if (errno == ESRCH) { + ASSERT_NE(errno, ESRCH); + return; + } + + if (errno == EINVAL) { + sig = 0; /* bust group-stop */ + goto cont; + } + + ksft_print_msg("PTRACE_GETSIGINFO: %s\n", + strerror(errno)); + goto error; + } + + if (sig == SIGSTOP && si.si_code == SI_TKILL && + si.si_pid == pid) + break; + + cont: + if (ptrace(PTRACE_CONT, pid, NULL, sig)) { + if (errno == ESRCH) { + ASSERT_NE(errno, ESRCH); + return; + } + + ksft_print_msg("PTRACE_CONT: %s\n", strerror(errno)); + goto error; + } + } + + /* Where is the child GCS? */ + iov.iov_base = &child_gcs; + iov.iov_len = sizeof(child_gcs); + ret = ptrace(PTRACE_GETREGSET, child, NT_ARM_GCS, &iov); + if (ret != 0) { + ksft_print_msg("Failed to read child GCS state: %s (%d)\n", + strerror(errno), errno); + goto error; + } + + /* We should have inherited GCS over fork(), confirm */ + if (!(child_gcs.features_enabled & PR_SHADOW_STACK_ENABLE)) { + ASSERT_TRUE(child_gcs.features_enabled & + PR_SHADOW_STACK_ENABLE); + goto error; + } + + gcspr = child_gcs.gcspr_el0; + ksft_print_msg("Child GCSPR 0x%lx, flags %llx, locked %llx\n", + gcspr, child_gcs.features_enabled, + child_gcs.features_locked); + + /* Ideally we'd cross check with the child memory map */ + + errno = 0; + val = ptrace(PTRACE_PEEKDATA, child, (void *)gcspr, NULL); + ret = errno; + if (ret != 0) + ksft_print_msg("PTRACE_PEEKDATA failed: %s (%d)\n", + strerror(ret), ret); + EXPECT_EQ(ret, 0); + + /* The child should be in a function, the GCSPR shouldn't be 0 */ + EXPECT_NE(val, 0); + + /* Same thing via process_vm_readv() */ + local_iov.iov_base = &rval; + local_iov.iov_len = sizeof(rval); + remote_iov.iov_base = (void *)gcspr; + remote_iov.iov_len = sizeof(rval); + ret = process_vm_readv(child, &local_iov, 1, &remote_iov, 1, 0); + if (ret == -1) + ksft_print_msg("process_vm_readv() failed: %s (%d)\n", + strerror(errno), errno); + EXPECT_EQ(ret, sizeof(rval)); + EXPECT_EQ(val, rval); + + /* Write data via a peek */ + ret = ptrace(PTRACE_POKEDATA, child, (void *)gcspr, NULL); + if (ret == -1) + ksft_print_msg("PTRACE_POKEDATA failed: %s (%d)\n", + strerror(errno), errno); + EXPECT_EQ(ret, 0); + EXPECT_EQ(0, ptrace(PTRACE_PEEKDATA, child, (void *)gcspr, NULL)); + + /* Restore what we had before */ + ret = ptrace(PTRACE_POKEDATA, child, (void *)gcspr, val); + if (ret == -1) + ksft_print_msg("PTRACE_POKEDATA failed: %s (%d)\n", + strerror(errno), errno); + EXPECT_EQ(ret, 0); + EXPECT_EQ(val, ptrace(PTRACE_PEEKDATA, child, (void *)gcspr, NULL)); + + /* That's all, folks */ + kill(child, SIGKILL); + return; + +error: + kill(child, SIGKILL); + ASSERT_FALSE(true); +} + +FIXTURE(map_gcs) +{ + unsigned long *stack; +}; + +FIXTURE_VARIANT(map_gcs) +{ + size_t stack_size; + unsigned long flags; +}; + +FIXTURE_VARIANT_ADD(map_gcs, s2k_cap_marker) +{ + .stack_size = 2 * 1024, + .flags = SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s2k_cap) +{ + .stack_size = 2 * 1024, + .flags = SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s2k_marker) +{ + .stack_size = 2 * 1024, + .flags = SHADOW_STACK_SET_MARKER, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s2k) +{ + .stack_size = 2 * 1024, + .flags = 0, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s4k_cap_marker) +{ + .stack_size = 4 * 1024, + .flags = SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s4k_cap) +{ + .stack_size = 4 * 1024, + .flags = SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s3k_marker) +{ + .stack_size = 4 * 1024, + .flags = SHADOW_STACK_SET_MARKER, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s4k) +{ + .stack_size = 4 * 1024, + .flags = 0, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s16k_cap_marker) +{ + .stack_size = 16 * 1024, + .flags = SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s16k_cap) +{ + .stack_size = 16 * 1024, + .flags = SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s16k_marker) +{ + .stack_size = 16 * 1024, + .flags = SHADOW_STACK_SET_MARKER, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s16k) +{ + .stack_size = 16 * 1024, + .flags = 0, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s64k_cap_marker) +{ + .stack_size = 64 * 1024, + .flags = SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s64k_cap) +{ + .stack_size = 64 * 1024, + .flags = SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s64k_marker) +{ + .stack_size = 64 * 1024, + .flags = SHADOW_STACK_SET_MARKER, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s64k) +{ + .stack_size = 64 * 1024, + .flags = 0, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s128k_cap_marker) +{ + .stack_size = 128 * 1024, + .flags = SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s128k_cap) +{ + .stack_size = 128 * 1024, + .flags = SHADOW_STACK_SET_TOKEN, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s128k_marker) +{ + .stack_size = 128 * 1024, + .flags = SHADOW_STACK_SET_MARKER, +}; + +FIXTURE_VARIANT_ADD(map_gcs, s128k) +{ + .stack_size = 128 * 1024, + .flags = 0, +}; + +FIXTURE_SETUP(map_gcs) +{ + self->stack = (void *)syscall(__NR_map_shadow_stack, 0, + variant->stack_size, + variant->flags); + ASSERT_FALSE(self->stack == MAP_FAILED); + ksft_print_msg("Allocated stack from %p-%p\n", self->stack, + self->stack + variant->stack_size); +} + +FIXTURE_TEARDOWN(map_gcs) +{ + int ret; + + if (self->stack != MAP_FAILED) { + ret = munmap(self->stack, variant->stack_size); + ASSERT_EQ(ret, 0); + } +} + +/* The stack has a cap token */ +TEST_F(map_gcs, stack_capped) +{ + unsigned long *stack = self->stack; + size_t cap_index; + + cap_index = (variant->stack_size / sizeof(unsigned long)); + + switch (variant->flags & (SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN)) { + case SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN: + cap_index -= 2; + break; + case SHADOW_STACK_SET_TOKEN: + cap_index -= 1; + break; + case SHADOW_STACK_SET_MARKER: + case 0: + /* No cap, no test */ + return; + } + + ASSERT_EQ(stack[cap_index], GCS_CAP(&stack[cap_index])); +} + +/* The top of the stack is 0 */ +TEST_F(map_gcs, stack_terminated) +{ + unsigned long *stack = self->stack; + size_t term_index; + + if (!(variant->flags & SHADOW_STACK_SET_MARKER)) + return; + + term_index = (variant->stack_size / sizeof(unsigned long)) - 1; + + ASSERT_EQ(stack[term_index], 0); +} + +/* Writes should fault */ +TEST_F_SIGNAL(map_gcs, not_writeable, SIGSEGV) +{ + self->stack[0] = 0; +} + +/* Put it all together, we can safely switch to and from the stack */ +TEST_F(map_gcs, stack_switch) +{ + size_t cap_index; + cap_index = (variant->stack_size / sizeof(unsigned long)); + unsigned long *orig_gcspr_el0, *pivot_gcspr_el0; + + /* Skip over the stack terminator and point at the cap */ + switch (variant->flags & (SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN)) { + case SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN: + cap_index -= 2; + break; + case SHADOW_STACK_SET_TOKEN: + cap_index -= 1; + break; + case SHADOW_STACK_SET_MARKER: + case 0: + /* No cap, no test */ + return; + } + pivot_gcspr_el0 = &self->stack[cap_index]; + + /* Pivot to the new GCS */ + ksft_print_msg("Pivoting to %p from %p, target has value 0x%lx\n", + pivot_gcspr_el0, get_gcspr(), + *pivot_gcspr_el0); + gcsss1(pivot_gcspr_el0); + orig_gcspr_el0 = gcsss2(); + ksft_print_msg("Pivoted to %p from %p, target has value 0x%lx\n", + get_gcspr(), orig_gcspr_el0, + *pivot_gcspr_el0); + + ksft_print_msg("Pivoted, GCSPR_EL0 now %p\n", get_gcspr()); + + /* New GCS must be in the new buffer */ + ASSERT_TRUE((unsigned long)get_gcspr() > (unsigned long)self->stack); + ASSERT_TRUE((unsigned long)get_gcspr() <= + (unsigned long)self->stack + variant->stack_size); + + /* We should be able to use all but 2 slots of the new stack */ + ksft_print_msg("Recursing %zu levels\n", cap_index - 1); + gcs_recurse(cap_index - 1); + + /* Pivot back to the original GCS */ + gcsss1(orig_gcspr_el0); + pivot_gcspr_el0 = gcsss2(); + + gcs_recurse(0); + ksft_print_msg("Pivoted back to GCSPR_EL0 0x%p\n", get_gcspr()); +} + +/* We fault if we try to go beyond the end of the stack */ +TEST_F_SIGNAL(map_gcs, stack_overflow, SIGSEGV) +{ + size_t cap_index; + cap_index = (variant->stack_size / sizeof(unsigned long)); + unsigned long *orig_gcspr_el0, *pivot_gcspr_el0; + + /* Skip over the stack terminator and point at the cap */ + switch (variant->flags & (SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN)) { + case SHADOW_STACK_SET_MARKER | SHADOW_STACK_SET_TOKEN: + cap_index -= 2; + break; + case SHADOW_STACK_SET_TOKEN: + cap_index -= 1; + break; + case SHADOW_STACK_SET_MARKER: + case 0: + /* No cap, no test but we need to SEGV to avoid a false fail */ + orig_gcspr_el0 = get_gcspr(); + *orig_gcspr_el0 = 0; + return; + } + pivot_gcspr_el0 = &self->stack[cap_index]; + + /* Pivot to the new GCS */ + ksft_print_msg("Pivoting to %p from %p, target has value 0x%lx\n", + pivot_gcspr_el0, get_gcspr(), + *pivot_gcspr_el0); + gcsss1(pivot_gcspr_el0); + orig_gcspr_el0 = gcsss2(); + ksft_print_msg("Pivoted to %p from %p, target has value 0x%lx\n", + pivot_gcspr_el0, orig_gcspr_el0, + *pivot_gcspr_el0); + + ksft_print_msg("Pivoted, GCSPR_EL0 now %p\n", get_gcspr()); + + /* New GCS must be in the new buffer */ + ASSERT_TRUE((unsigned long)get_gcspr() > (unsigned long)self->stack); + ASSERT_TRUE((unsigned long)get_gcspr() <= + (unsigned long)self->stack + variant->stack_size); + + /* Now try to recurse, we should fault doing this. */ + ksft_print_msg("Recursing %zu levels...\n", cap_index + 1); + gcs_recurse(cap_index + 1); + ksft_print_msg("...done\n"); + + /* Clean up properly to try to guard against spurious passes. */ + gcsss1(orig_gcspr_el0); + pivot_gcspr_el0 = gcsss2(); + ksft_print_msg("Pivoted back to GCSPR_EL0 0x%p\n", get_gcspr()); +} + +FIXTURE(map_invalid_gcs) +{ +}; + +FIXTURE_VARIANT(map_invalid_gcs) +{ + size_t stack_size; +}; + +FIXTURE_SETUP(map_invalid_gcs) +{ +} + +FIXTURE_TEARDOWN(map_invalid_gcs) +{ +} + +/* GCS must be larger than 16 bytes */ +FIXTURE_VARIANT_ADD(map_invalid_gcs, too_small) +{ + .stack_size = 8, +}; + +/* GCS size must be 16 byte aligned */ +FIXTURE_VARIANT_ADD(map_invalid_gcs, unligned_1) { .stack_size = 1024 + 1 }; +FIXTURE_VARIANT_ADD(map_invalid_gcs, unligned_2) { .stack_size = 1024 + 2 }; +FIXTURE_VARIANT_ADD(map_invalid_gcs, unligned_3) { .stack_size = 1024 + 3 }; +FIXTURE_VARIANT_ADD(map_invalid_gcs, unligned_4) { .stack_size = 1024 + 4 }; +FIXTURE_VARIANT_ADD(map_invalid_gcs, unligned_5) { .stack_size = 1024 + 5 }; +FIXTURE_VARIANT_ADD(map_invalid_gcs, unligned_6) { .stack_size = 1024 + 6 }; +FIXTURE_VARIANT_ADD(map_invalid_gcs, unligned_7) { .stack_size = 1024 + 7 }; + +TEST_F(map_invalid_gcs, do_map) +{ + void *stack; + + stack = (void *)syscall(__NR_map_shadow_stack, 0, + variant->stack_size, 0); + ASSERT_TRUE(stack == MAP_FAILED); + if (stack != MAP_FAILED) + munmap(stack, variant->stack_size); +} + +FIXTURE(invalid_mprotect) +{ + unsigned long *stack; + size_t stack_size; +}; + +FIXTURE_VARIANT(invalid_mprotect) +{ + unsigned long flags; +}; + +FIXTURE_SETUP(invalid_mprotect) +{ + self->stack_size = sysconf(_SC_PAGE_SIZE); + self->stack = (void *)syscall(__NR_map_shadow_stack, 0, + self->stack_size, 0); + ASSERT_FALSE(self->stack == MAP_FAILED); + ksft_print_msg("Allocated stack from %p-%p\n", self->stack, + self->stack + self->stack_size); +} + +FIXTURE_TEARDOWN(invalid_mprotect) +{ + int ret; + + if (self->stack != MAP_FAILED) { + ret = munmap(self->stack, self->stack_size); + ASSERT_EQ(ret, 0); + } +} + +FIXTURE_VARIANT_ADD(invalid_mprotect, exec) +{ + .flags = PROT_EXEC, +}; + +TEST_F(invalid_mprotect, do_map) +{ + int ret; + + ret = mprotect(self->stack, self->stack_size, variant->flags); + ASSERT_EQ(ret, -1); +} + +TEST_F(invalid_mprotect, do_map_read) +{ + int ret; + + ret = mprotect(self->stack, self->stack_size, + variant->flags | PROT_READ); + ASSERT_EQ(ret, -1); +} + +int main(int argc, char **argv) +{ + unsigned long gcs_mode; + int ret; + + if (!(getauxval(AT_HWCAP) & HWCAP_GCS)) + ksft_exit_skip("SKIP GCS not supported\n"); + + /* + * Force shadow stacks on, our tests *should* be fine with or + * without libc support and with or without this having ended + * up tagged for GCS and enabled by the dynamic linker. We + * can't use the libc prctl() function since we can't return + * from enabling the stack. + */ + ret = my_syscall2(__NR_prctl, PR_GET_SHADOW_STACK_STATUS, &gcs_mode); + if (ret) { + ksft_print_msg("Failed to read GCS state: %d\n", ret); + return EXIT_FAILURE; + } + + if (!(gcs_mode & PR_SHADOW_STACK_ENABLE)) { + gcs_mode = PR_SHADOW_STACK_ENABLE; + ret = my_syscall2(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, + gcs_mode); + if (ret) { + ksft_print_msg("Failed to configure GCS: %d\n", ret); + return EXIT_FAILURE; + } + } + + /* Avoid returning in case libc doesn't understand GCS */ + exit(test_harness_run(argc, argv)); +} -- cgit v1.2.3 From 58d69a3e35825698b5daddc1a074e9ea19cb0c51 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:15 +0100 Subject: kselftest/arm64: Add test coverage for GCS mode locking Verify that we can lock individual GCS mode bits, that other modes aren't affected and as a side effect also that every combination of modes can be enabled. Normally the inability to reenable GCS after disabling it would be an issue with testing but fortunately the kselftest_harness runs each test within a fork()ed child. This can be inconvenient for some kinds of testing but here it means that each test is in a separate thread and therefore won't be affected by other tests in the suite. Once we get toolchains with support for enabling GCS by default we will need to take care to not do that in the build system but there are no such toolchains yet so it is not yet an issue. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-36-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/gcs/.gitignore | 1 + tools/testing/selftests/arm64/gcs/Makefile | 2 +- tools/testing/selftests/arm64/gcs/gcs-locking.c | 200 ++++++++++++++++++++++++ 3 files changed, 202 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/arm64/gcs/gcs-locking.c (limited to 'tools') diff --git a/tools/testing/selftests/arm64/gcs/.gitignore b/tools/testing/selftests/arm64/gcs/.gitignore index 5810c4a163d4..0c86f53f68ad 100644 --- a/tools/testing/selftests/arm64/gcs/.gitignore +++ b/tools/testing/selftests/arm64/gcs/.gitignore @@ -1,2 +1,3 @@ basic-gcs libc-gcs +gcs-locking diff --git a/tools/testing/selftests/arm64/gcs/Makefile b/tools/testing/selftests/arm64/gcs/Makefile index a8fdf21e9a47..2173d6275956 100644 --- a/tools/testing/selftests/arm64/gcs/Makefile +++ b/tools/testing/selftests/arm64/gcs/Makefile @@ -6,7 +6,7 @@ # nolibc. # -TEST_GEN_PROGS := basic-gcs libc-gcs +TEST_GEN_PROGS := basic-gcs libc-gcs gcs-locking LDLIBS+=-lpthread diff --git a/tools/testing/selftests/arm64/gcs/gcs-locking.c b/tools/testing/selftests/arm64/gcs/gcs-locking.c new file mode 100644 index 000000000000..989f75a491b7 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/gcs-locking.c @@ -0,0 +1,200 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2023 ARM Limited. + * + * Tests for GCS mode locking. These tests rely on both having GCS + * unconfigured on entry and on the kselftest harness running each + * test in a fork()ed process which will have it's own mode. + */ + +#include + +#include +#include + +#include + +#include "kselftest_harness.h" + +#include "gcs-util.h" + +#define my_syscall2(num, arg1, arg2) \ +({ \ + register long _num __asm__ ("x8") = (num); \ + register long _arg1 __asm__ ("x0") = (long)(arg1); \ + register long _arg2 __asm__ ("x1") = (long)(arg2); \ + register long _arg3 __asm__ ("x2") = 0; \ + register long _arg4 __asm__ ("x3") = 0; \ + register long _arg5 __asm__ ("x4") = 0; \ + \ + __asm__ volatile ( \ + "svc #0\n" \ + : "=r"(_arg1) \ + : "r"(_arg1), "r"(_arg2), \ + "r"(_arg3), "r"(_arg4), \ + "r"(_arg5), "r"(_num) \ + : "memory", "cc" \ + ); \ + _arg1; \ +}) + +/* No mode bits are rejected for locking */ +TEST(lock_all_modes) +{ + int ret; + + ret = prctl(PR_LOCK_SHADOW_STACK_STATUS, ULONG_MAX, 0, 0, 0); + ASSERT_EQ(ret, 0); +} + +FIXTURE(valid_modes) +{ +}; + +FIXTURE_VARIANT(valid_modes) +{ + unsigned long mode; +}; + +FIXTURE_VARIANT_ADD(valid_modes, enable) +{ + .mode = PR_SHADOW_STACK_ENABLE, +}; + +FIXTURE_VARIANT_ADD(valid_modes, enable_write) +{ + .mode = PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_WRITE, +}; + +FIXTURE_VARIANT_ADD(valid_modes, enable_push) +{ + .mode = PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_PUSH, +}; + +FIXTURE_VARIANT_ADD(valid_modes, enable_write_push) +{ + .mode = PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_WRITE | + PR_SHADOW_STACK_PUSH, +}; + +FIXTURE_SETUP(valid_modes) +{ +} + +FIXTURE_TEARDOWN(valid_modes) +{ +} + +/* We can set the mode at all */ +TEST_F(valid_modes, set) +{ + int ret; + + ret = my_syscall2(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, + variant->mode); + ASSERT_EQ(ret, 0); + + _exit(0); +} + +/* Enabling, locking then disabling is rejected */ +TEST_F(valid_modes, enable_lock_disable) +{ + unsigned long mode; + int ret; + + ret = my_syscall2(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, + variant->mode); + ASSERT_EQ(ret, 0); + + ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); + ASSERT_EQ(ret, 0); + ASSERT_EQ(mode, variant->mode); + + ret = prctl(PR_LOCK_SHADOW_STACK_STATUS, variant->mode, 0, 0, 0); + ASSERT_EQ(ret, 0); + + ret = my_syscall2(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, 0); + ASSERT_EQ(ret, -EBUSY); + + _exit(0); +} + +/* Locking then enabling is rejected */ +TEST_F(valid_modes, lock_enable) +{ + unsigned long mode; + int ret; + + ret = prctl(PR_LOCK_SHADOW_STACK_STATUS, variant->mode, 0, 0, 0); + ASSERT_EQ(ret, 0); + + ret = my_syscall2(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, + variant->mode); + ASSERT_EQ(ret, -EBUSY); + + ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); + ASSERT_EQ(ret, 0); + ASSERT_EQ(mode, 0); + + _exit(0); +} + +/* Locking then changing other modes is fine */ +TEST_F(valid_modes, lock_enable_disable_others) +{ + unsigned long mode; + int ret; + + ret = my_syscall2(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, + variant->mode); + ASSERT_EQ(ret, 0); + + ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); + ASSERT_EQ(ret, 0); + ASSERT_EQ(mode, variant->mode); + + ret = prctl(PR_LOCK_SHADOW_STACK_STATUS, variant->mode, 0, 0, 0); + ASSERT_EQ(ret, 0); + + ret = my_syscall2(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, + PR_SHADOW_STACK_ALL_MODES); + ASSERT_EQ(ret, 0); + + ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); + ASSERT_EQ(ret, 0); + ASSERT_EQ(mode, PR_SHADOW_STACK_ALL_MODES); + + + ret = my_syscall2(__NR_prctl, PR_SET_SHADOW_STACK_STATUS, + variant->mode); + ASSERT_EQ(ret, 0); + + ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); + ASSERT_EQ(ret, 0); + ASSERT_EQ(mode, variant->mode); + + _exit(0); +} + +int main(int argc, char **argv) +{ + unsigned long mode; + int ret; + + if (!(getauxval(AT_HWCAP) & HWCAP_GCS)) + ksft_exit_skip("SKIP GCS not supported\n"); + + ret = prctl(PR_GET_SHADOW_STACK_STATUS, &mode, 0, 0, 0); + if (ret) { + ksft_print_msg("Failed to read GCS state: %d\n", ret); + return EXIT_FAILURE; + } + + if (mode & PR_SHADOW_STACK_ENABLE) { + ksft_print_msg("GCS was enabled, test unsupported\n"); + return KSFT_SKIP; + } + + return test_harness_run(argc, argv); +} -- cgit v1.2.3 From 794b64ca5665323f36e5fc92dfca02a3797b6523 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:16 +0100 Subject: kselftest/arm64: Add GCS signal tests Do some testing of the signal handling for GCS, checking that a GCS frame has the expected information in it and that the expected signals are delivered with invalid operations. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-37-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/signal/.gitignore | 1 + .../selftests/arm64/signal/test_signals_utils.h | 10 +++ .../arm64/signal/testcases/gcs_exception_fault.c | 62 +++++++++++++++ .../selftests/arm64/signal/testcases/gcs_frame.c | 88 ++++++++++++++++++++++ .../arm64/signal/testcases/gcs_write_fault.c | 67 ++++++++++++++++ 5 files changed, 228 insertions(+) create mode 100644 tools/testing/selftests/arm64/signal/testcases/gcs_exception_fault.c create mode 100644 tools/testing/selftests/arm64/signal/testcases/gcs_frame.c create mode 100644 tools/testing/selftests/arm64/signal/testcases/gcs_write_fault.c (limited to 'tools') diff --git a/tools/testing/selftests/arm64/signal/.gitignore b/tools/testing/selftests/arm64/signal/.gitignore index b2f2bfd5c6aa..b257db665a35 100644 --- a/tools/testing/selftests/arm64/signal/.gitignore +++ b/tools/testing/selftests/arm64/signal/.gitignore @@ -3,6 +3,7 @@ mangle_* fake_sigreturn_* fpmr_* poe_* +gcs_* sme_* ssve_* sve_* diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.h b/tools/testing/selftests/arm64/signal/test_signals_utils.h index 1e80808ee105..36fc12b3cd60 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.h +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.h @@ -6,6 +6,7 @@ #include #include +#include #include #include @@ -47,6 +48,15 @@ void test_result(struct tdescr *td); _arg1; \ }) +static inline __attribute__((always_inline)) uint64_t get_gcspr_el0(void) +{ + uint64_t val; + + asm volatile("mrs %0, S3_3_C2_C5_1" : "=r" (val)); + + return val; +} + static inline bool feats_ok(struct tdescr *td) { if (td->feats_incompatible & td->feats_supported) diff --git a/tools/testing/selftests/arm64/signal/testcases/gcs_exception_fault.c b/tools/testing/selftests/arm64/signal/testcases/gcs_exception_fault.c new file mode 100644 index 000000000000..6228448b2ae7 --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/gcs_exception_fault.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 ARM Limited + */ + +#include +#include +#include + +#include +#include + +#include "test_signals_utils.h" +#include "testcases.h" + +/* + * We should get this from asm/siginfo.h but the testsuite is being + * clever with redefining siginfo_t. + */ +#ifndef SEGV_CPERR +#define SEGV_CPERR 10 +#endif + +static inline void gcsss1(uint64_t Xt) +{ + asm volatile ( + "sys #3, C7, C7, #2, %0\n" + : + : "rZ" (Xt) + : "memory"); +} + +static int gcs_op_fault_trigger(struct tdescr *td) +{ + /* + * The slot below our current GCS should be in a valid GCS but + * must not have a valid cap in it. + */ + gcsss1(get_gcspr_el0() - 8); + + return 0; +} + +static int gcs_op_fault_signal(struct tdescr *td, siginfo_t *si, + ucontext_t *uc) +{ + ASSERT_GOOD_CONTEXT(uc); + + return 1; +} + +struct tdescr tde = { + .name = "Invalid GCS operation", + .descr = "An invalid GCS operation generates the expected signal", + .feats_required = FEAT_GCS, + .timeout = 3, + .sig_ok = SIGSEGV, + .sig_ok_code = SEGV_CPERR, + .sanity_disabled = true, + .trigger = gcs_op_fault_trigger, + .run = gcs_op_fault_signal, +}; diff --git a/tools/testing/selftests/arm64/signal/testcases/gcs_frame.c b/tools/testing/selftests/arm64/signal/testcases/gcs_frame.c new file mode 100644 index 000000000000..b405d82321da --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/gcs_frame.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 ARM Limited + */ + +#include +#include +#include + +#include "test_signals_utils.h" +#include "testcases.h" + +static union { + ucontext_t uc; + char buf[1024 * 64]; +} context; + +static int gcs_regs(struct tdescr *td, siginfo_t *si, ucontext_t *uc) +{ + size_t offset; + struct _aarch64_ctx *head = GET_BUF_RESV_HEAD(context); + struct gcs_context *gcs; + unsigned long expected, gcspr; + uint64_t *u64_val; + int ret; + + ret = prctl(PR_GET_SHADOW_STACK_STATUS, &expected, 0, 0, 0); + if (ret != 0) { + fprintf(stderr, "Unable to query GCS status\n"); + return 1; + } + + /* We expect a cap to be added to the GCS in the signal frame */ + gcspr = get_gcspr_el0(); + gcspr -= 8; + fprintf(stderr, "Expecting GCSPR_EL0 %lx\n", gcspr); + + if (!get_current_context(td, &context.uc, sizeof(context))) { + fprintf(stderr, "Failed getting context\n"); + return 1; + } + + /* Ensure that the signal restore token was consumed */ + u64_val = (uint64_t *)get_gcspr_el0() + 1; + if (*u64_val) { + fprintf(stderr, "GCS value at %p is %lx not 0\n", + u64_val, *u64_val); + return 1; + } + + fprintf(stderr, "Got context\n"); + + head = get_header(head, GCS_MAGIC, GET_BUF_RESV_SIZE(context), + &offset); + if (!head) { + fprintf(stderr, "No GCS context\n"); + return 1; + } + + gcs = (struct gcs_context *)head; + + /* Basic size validation is done in get_current_context() */ + + if (gcs->features_enabled != expected) { + fprintf(stderr, "Features enabled %llx but expected %lx\n", + gcs->features_enabled, expected); + return 1; + } + + if (gcs->gcspr != gcspr) { + fprintf(stderr, "Got GCSPR %llx but expected %lx\n", + gcs->gcspr, gcspr); + return 1; + } + + fprintf(stderr, "GCS context validated\n"); + td->pass = 1; + + return 0; +} + +struct tdescr tde = { + .name = "GCS basics", + .descr = "Validate a GCS signal context", + .feats_required = FEAT_GCS, + .timeout = 3, + .run = gcs_regs, +}; diff --git a/tools/testing/selftests/arm64/signal/testcases/gcs_write_fault.c b/tools/testing/selftests/arm64/signal/testcases/gcs_write_fault.c new file mode 100644 index 000000000000..faeabb18c4b2 --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/gcs_write_fault.c @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 ARM Limited + */ + +#include +#include +#include + +#include +#include + +#include "test_signals_utils.h" +#include "testcases.h" + +static uint64_t *gcs_page; + +#ifndef __NR_map_shadow_stack +#define __NR_map_shadow_stack 453 +#endif + +static bool alloc_gcs(struct tdescr *td) +{ + long page_size = sysconf(_SC_PAGE_SIZE); + + gcs_page = (void *)syscall(__NR_map_shadow_stack, 0, + page_size, 0); + if (gcs_page == MAP_FAILED) { + fprintf(stderr, "Failed to map %ld byte GCS: %d\n", + page_size, errno); + return false; + } + + return true; +} + +static int gcs_write_fault_trigger(struct tdescr *td) +{ + /* Verify that the page is readable (ie, not completely unmapped) */ + fprintf(stderr, "Read value 0x%lx\n", gcs_page[0]); + + /* A regular write should trigger a fault */ + gcs_page[0] = EINVAL; + + return 0; +} + +static int gcs_write_fault_signal(struct tdescr *td, siginfo_t *si, + ucontext_t *uc) +{ + ASSERT_GOOD_CONTEXT(uc); + + return 1; +} + + +struct tdescr tde = { + .name = "GCS write fault", + .descr = "Normal writes to a GCS segfault", + .feats_required = FEAT_GCS, + .timeout = 3, + .sig_ok = SIGSEGV, + .sanity_disabled = true, + .init = alloc_gcs, + .trigger = gcs_write_fault_trigger, + .run = gcs_write_fault_signal, +}; -- cgit v1.2.3 From 05e6cfff58c481bfe0ada24ebe1c205e2817dacd Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:17 +0100 Subject: kselftest/arm64: Add a GCS stress test Add a stress test which runs one more process than we have CPUs spinning through a very recursive function with frequent syscalls immediately prior to return and signals being injected every 100ms. The goal is to flag up any scheduling related issues, for example failure to ensure that barriers are inserted when moving a GCS using task to another CPU. The test runs for a configurable amount of time, defaulting to 10 seconds. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-38-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/gcs/.gitignore | 2 + tools/testing/selftests/arm64/gcs/Makefile | 6 +- tools/testing/selftests/arm64/gcs/asm-offsets.h | 0 .../selftests/arm64/gcs/gcs-stress-thread.S | 311 ++++++++++++ tools/testing/selftests/arm64/gcs/gcs-stress.c | 530 +++++++++++++++++++++ 5 files changed, 848 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/arm64/gcs/asm-offsets.h create mode 100644 tools/testing/selftests/arm64/gcs/gcs-stress-thread.S create mode 100644 tools/testing/selftests/arm64/gcs/gcs-stress.c (limited to 'tools') diff --git a/tools/testing/selftests/arm64/gcs/.gitignore b/tools/testing/selftests/arm64/gcs/.gitignore index 0c86f53f68ad..1e8d1f6b27f2 100644 --- a/tools/testing/selftests/arm64/gcs/.gitignore +++ b/tools/testing/selftests/arm64/gcs/.gitignore @@ -1,3 +1,5 @@ basic-gcs libc-gcs gcs-locking +gcs-stress +gcs-stress-thread diff --git a/tools/testing/selftests/arm64/gcs/Makefile b/tools/testing/selftests/arm64/gcs/Makefile index 2173d6275956..d8b06ca51e22 100644 --- a/tools/testing/selftests/arm64/gcs/Makefile +++ b/tools/testing/selftests/arm64/gcs/Makefile @@ -6,7 +6,8 @@ # nolibc. # -TEST_GEN_PROGS := basic-gcs libc-gcs gcs-locking +TEST_GEN_PROGS := basic-gcs libc-gcs gcs-locking gcs-stress +TEST_GEN_PROGS_EXTENDED := gcs-stress-thread LDLIBS+=-lpthread @@ -18,3 +19,6 @@ $(OUTPUT)/basic-gcs: basic-gcs.c -I../../../../../usr/include \ -std=gnu99 -I../.. -g \ -ffreestanding -Wall $^ -o $@ -lgcc + +$(OUTPUT)/gcs-stress-thread: gcs-stress-thread.S + $(CC) -nostdlib $^ -o $@ diff --git a/tools/testing/selftests/arm64/gcs/asm-offsets.h b/tools/testing/selftests/arm64/gcs/asm-offsets.h new file mode 100644 index 000000000000..e69de29bb2d1 diff --git a/tools/testing/selftests/arm64/gcs/gcs-stress-thread.S b/tools/testing/selftests/arm64/gcs/gcs-stress-thread.S new file mode 100644 index 000000000000..b88b25217da5 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/gcs-stress-thread.S @@ -0,0 +1,311 @@ +// Program that loops for ever doing lots of recursions and system calls, +// intended to be used as part of a stress test for GCS context switching. +// +// Copyright 2015-2023 Arm Ltd + +#include + +#define sa_sz 32 +#define sa_flags 8 +#define sa_handler 0 +#define sa_mask_sz 8 + +#define si_code 8 + +#define SIGINT 2 +#define SIGABRT 6 +#define SIGUSR1 10 +#define SIGSEGV 11 +#define SIGUSR2 12 +#define SIGTERM 15 +#define SEGV_CPERR 10 + +#define SA_NODEFER 1073741824 +#define SA_SIGINFO 4 +#define ucontext_regs 184 + +#define PR_SET_SHADOW_STACK_STATUS 75 +# define PR_SHADOW_STACK_ENABLE (1UL << 0) + +#define GCSPR_EL0 S3_3_C2_C5_1 + +.macro function name + .macro endfunction + .type \name, @function + .purgem endfunction + .endm +\name: +.endm + +// Print a single character x0 to stdout +// Clobbers x0-x2,x8 +function putc + str x0, [sp, #-16]! + + mov x0, #1 // STDOUT_FILENO + mov x1, sp + mov x2, #1 + mov x8, #__NR_write + svc #0 + + add sp, sp, #16 + ret +endfunction +.globl putc + +// Print a NUL-terminated string starting at address x0 to stdout +// Clobbers x0-x3,x8 +function puts + mov x1, x0 + + mov x2, #0 +0: ldrb w3, [x0], #1 + cbz w3, 1f + add x2, x2, #1 + b 0b + +1: mov w0, #1 // STDOUT_FILENO + mov x8, #__NR_write + svc #0 + + ret +endfunction +.globl puts + +// Utility macro to print a literal string +// Clobbers x0-x4,x8 +.macro puts string + .pushsection .rodata.str1.1, "aMS", @progbits, 1 +.L__puts_literal\@: .string "\string" + .popsection + + ldr x0, =.L__puts_literal\@ + bl puts +.endm + +// Print an unsigned decimal number x0 to stdout +// Clobbers x0-x4,x8 +function putdec + mov x1, sp + str x30, [sp, #-32]! // Result can't be > 20 digits + + mov x2, #0 + strb w2, [x1, #-1]! // Write the NUL terminator + + mov x2, #10 +0: udiv x3, x0, x2 // div-mod loop to generate the digits + msub x0, x3, x2, x0 + add w0, w0, #'0' + strb w0, [x1, #-1]! + mov x0, x3 + cbnz x3, 0b + + ldrb w0, [x1] + cbnz w0, 1f + mov w0, #'0' // Print "0" for 0, not "" + strb w0, [x1, #-1]! + +1: mov x0, x1 + bl puts + + ldr x30, [sp], #32 + ret +endfunction +.globl putdec + +// Print an unsigned decimal number x0 to stdout, followed by a newline +// Clobbers x0-x5,x8 +function putdecn + mov x5, x30 + + bl putdec + mov x0, #'\n' + bl putc + + ret x5 +endfunction +.globl putdecn + +// Fill x1 bytes starting at x0 with 0. +// Clobbers x1, x2. +function memclr + mov w2, #0 +endfunction +.globl memclr + // fall through to memfill + +// Trivial memory fill: fill x1 bytes starting at address x0 with byte w2 +// Clobbers x1 +function memfill + cmp x1, #0 + b.eq 1f + +0: strb w2, [x0], #1 + subs x1, x1, #1 + b.ne 0b + +1: ret +endfunction +.globl memfill + +// w0: signal number +// x1: sa_action +// w2: sa_flags +// Clobbers x0-x6,x8 +function setsignal + str x30, [sp, #-((sa_sz + 15) / 16 * 16 + 16)]! + + mov w4, w0 + mov x5, x1 + mov w6, w2 + + add x0, sp, #16 + mov x1, #sa_sz + bl memclr + + mov w0, w4 + add x1, sp, #16 + str w6, [x1, #sa_flags] + str x5, [x1, #sa_handler] + mov x2, #0 + mov x3, #sa_mask_sz + mov x8, #__NR_rt_sigaction + svc #0 + + cbz w0, 1f + + puts "sigaction failure\n" + b abort + +1: ldr x30, [sp], #((sa_sz + 15) / 16 * 16 + 16) + ret +endfunction + + +function tickle_handler + // Perhaps collect GCSPR_EL0 here in future? + ret +endfunction + +function terminate_handler + mov w21, w0 + mov x20, x2 + + puts "Terminated by signal " + mov w0, w21 + bl putdec + puts ", no error\n" + + mov x0, #0 + mov x8, #__NR_exit + svc #0 +endfunction + +function segv_handler + // stash the siginfo_t * + mov x20, x1 + + // Disable GCS, we don't want additional faults logging things + mov x0, PR_SET_SHADOW_STACK_STATUS + mov x1, xzr + mov x2, xzr + mov x3, xzr + mov x4, xzr + mov x5, xzr + mov x8, #__NR_prctl + svc #0 + + puts "Got SIGSEGV code " + + ldr x21, [x20, #si_code] + mov x0, x21 + bl putdec + + // GCS faults should have si_code SEGV_CPERR + cmp x21, #SEGV_CPERR + bne 1f + + puts " (GCS violation)" +1: + mov x0, '\n' + bl putc + b abort +endfunction + +// Recurse x20 times +.macro recurse id +function recurse\id + stp x29, x30, [sp, #-16]! + mov x29, sp + + cmp x20, 0 + beq 1f + sub x20, x20, 1 + bl recurse\id + +1: + ldp x29, x30, [sp], #16 + + // Do a syscall immediately prior to returning to try to provoke + // scheduling and migration at a point where coherency issues + // might trigger. + mov x8, #__NR_getpid + svc #0 + + ret +endfunction +.endm + +// Generate and use two copies so we're changing the GCS contents +recurse 1 +recurse 2 + +.globl _start +function _start + // Run with GCS + mov x0, PR_SET_SHADOW_STACK_STATUS + mov x1, PR_SHADOW_STACK_ENABLE + mov x2, xzr + mov x3, xzr + mov x4, xzr + mov x5, xzr + mov x8, #__NR_prctl + svc #0 + cbz x0, 1f + puts "Failed to enable GCS\n" + b abort +1: + + mov w0, #SIGTERM + adr x1, terminate_handler + mov w2, #SA_SIGINFO + bl setsignal + + mov w0, #SIGUSR1 + adr x1, tickle_handler + mov w2, #SA_SIGINFO + orr w2, w2, #SA_NODEFER + bl setsignal + + mov w0, #SIGSEGV + adr x1, segv_handler + mov w2, #SA_SIGINFO + orr w2, w2, #SA_NODEFER + bl setsignal + + puts "Running\n" + +loop: + // Small recursion depth so we're frequently flipping between + // the two recursors and changing what's on the stack + mov x20, #5 + bl recurse1 + mov x20, #5 + bl recurse2 + b loop +endfunction + +abort: + mov x0, #255 + mov x8, #__NR_exit + svc #0 diff --git a/tools/testing/selftests/arm64/gcs/gcs-stress.c b/tools/testing/selftests/arm64/gcs/gcs-stress.c new file mode 100644 index 000000000000..bdec7ee8cfd5 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/gcs-stress.c @@ -0,0 +1,530 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022-3 ARM Limited. + */ + +#define _GNU_SOURCE +#define _POSIX_C_SOURCE 199309L + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../../kselftest.h" + +struct child_data { + char *name, *output; + pid_t pid; + int stdout; + bool output_seen; + bool exited; + int exit_status; + int exit_signal; +}; + +static int epoll_fd; +static struct child_data *children; +static struct epoll_event *evs; +static int tests; +static int num_children; +static bool terminate; + +static int startup_pipe[2]; + +static int num_processors(void) +{ + long nproc = sysconf(_SC_NPROCESSORS_CONF); + if (nproc < 0) { + perror("Unable to read number of processors\n"); + exit(EXIT_FAILURE); + } + + return nproc; +} + +static void start_thread(struct child_data *child) +{ + int ret, pipefd[2], i; + struct epoll_event ev; + + ret = pipe(pipefd); + if (ret != 0) + ksft_exit_fail_msg("Failed to create stdout pipe: %s (%d)\n", + strerror(errno), errno); + + child->pid = fork(); + if (child->pid == -1) + ksft_exit_fail_msg("fork() failed: %s (%d)\n", + strerror(errno), errno); + + if (!child->pid) { + /* + * In child, replace stdout with the pipe, errors to + * stderr from here as kselftest prints to stdout. + */ + ret = dup2(pipefd[1], 1); + if (ret == -1) { + fprintf(stderr, "dup2() %d\n", errno); + exit(EXIT_FAILURE); + } + + /* + * Duplicate the read side of the startup pipe to + * FD 3 so we can close everything else. + */ + ret = dup2(startup_pipe[0], 3); + if (ret == -1) { + fprintf(stderr, "dup2() %d\n", errno); + exit(EXIT_FAILURE); + } + + /* + * Very dumb mechanism to clean open FDs other than + * stdio. We don't want O_CLOEXEC for the pipes... + */ + for (i = 4; i < 8192; i++) + close(i); + + /* + * Read from the startup pipe, there should be no data + * and we should block until it is closed. We just + * carry on on error since this isn't super critical. + */ + ret = read(3, &i, sizeof(i)); + if (ret < 0) + fprintf(stderr, "read(startp pipe) failed: %s (%d)\n", + strerror(errno), errno); + if (ret > 0) + fprintf(stderr, "%d bytes of data on startup pipe\n", + ret); + close(3); + + ret = execl("gcs-stress-thread", "gcs-stress-thread", NULL); + fprintf(stderr, "execl(gcs-stress-thread) failed: %d (%s)\n", + errno, strerror(errno)); + + exit(EXIT_FAILURE); + } else { + /* + * In parent, remember the child and close our copy of the + * write side of stdout. + */ + close(pipefd[1]); + child->stdout = pipefd[0]; + child->output = NULL; + child->exited = false; + child->output_seen = false; + + ev.events = EPOLLIN | EPOLLHUP; + ev.data.ptr = child; + + ret = asprintf(&child->name, "Thread-%d", child->pid); + if (ret == -1) + ksft_exit_fail_msg("asprintf() failed\n"); + + ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, child->stdout, &ev); + if (ret < 0) { + ksft_exit_fail_msg("%s EPOLL_CTL_ADD failed: %s (%d)\n", + child->name, strerror(errno), errno); + } + } + + ksft_print_msg("Started %s\n", child->name); + num_children++; +} + +static bool child_output_read(struct child_data *child) +{ + char read_data[1024]; + char work[1024]; + int ret, len, cur_work, cur_read; + + ret = read(child->stdout, read_data, sizeof(read_data)); + if (ret < 0) { + if (errno == EINTR) + return true; + + ksft_print_msg("%s: read() failed: %s (%d)\n", + child->name, strerror(errno), + errno); + return false; + } + len = ret; + + child->output_seen = true; + + /* Pick up any partial read */ + if (child->output) { + strncpy(work, child->output, sizeof(work) - 1); + cur_work = strnlen(work, sizeof(work)); + free(child->output); + child->output = NULL; + } else { + cur_work = 0; + } + + cur_read = 0; + while (cur_read < len) { + work[cur_work] = read_data[cur_read++]; + + if (work[cur_work] == '\n') { + work[cur_work] = '\0'; + ksft_print_msg("%s: %s\n", child->name, work); + cur_work = 0; + } else { + cur_work++; + } + } + + if (cur_work) { + work[cur_work] = '\0'; + ret = asprintf(&child->output, "%s", work); + if (ret == -1) + ksft_exit_fail_msg("Out of memory\n"); + } + + return false; +} + +static void child_output(struct child_data *child, uint32_t events, + bool flush) +{ + bool read_more; + + if (events & EPOLLIN) { + do { + read_more = child_output_read(child); + } while (read_more); + } + + if (events & EPOLLHUP) { + close(child->stdout); + child->stdout = -1; + flush = true; + } + + if (flush && child->output) { + ksft_print_msg("%s: %s\n", child->name, child->output); + free(child->output); + child->output = NULL; + } +} + +static void child_tickle(struct child_data *child) +{ + if (child->output_seen && !child->exited) + kill(child->pid, SIGUSR1); +} + +static void child_stop(struct child_data *child) +{ + if (!child->exited) + kill(child->pid, SIGTERM); +} + +static void child_cleanup(struct child_data *child) +{ + pid_t ret; + int status; + bool fail = false; + + if (!child->exited) { + do { + ret = waitpid(child->pid, &status, 0); + if (ret == -1 && errno == EINTR) + continue; + + if (ret == -1) { + ksft_print_msg("waitpid(%d) failed: %s (%d)\n", + child->pid, strerror(errno), + errno); + fail = true; + break; + } + + if (WIFEXITED(status)) { + child->exit_status = WEXITSTATUS(status); + child->exited = true; + } + + if (WIFSIGNALED(status)) { + child->exit_signal = WTERMSIG(status); + ksft_print_msg("%s: Exited due to signal %d\n", + child->name); + fail = true; + child->exited = true; + } + } while (!child->exited); + } + + if (!child->output_seen) { + ksft_print_msg("%s no output seen\n", child->name); + fail = true; + } + + if (child->exit_status != 0) { + ksft_print_msg("%s exited with error code %d\n", + child->name, child->exit_status); + fail = true; + } + + ksft_test_result(!fail, "%s\n", child->name); +} + +static void handle_child_signal(int sig, siginfo_t *info, void *context) +{ + int i; + bool found = false; + + for (i = 0; i < num_children; i++) { + if (children[i].pid == info->si_pid) { + children[i].exited = true; + children[i].exit_status = info->si_status; + found = true; + break; + } + } + + if (!found) + ksft_print_msg("SIGCHLD for unknown PID %d with status %d\n", + info->si_pid, info->si_status); +} + +static void handle_exit_signal(int sig, siginfo_t *info, void *context) +{ + int i; + + /* If we're already exiting then don't signal again */ + if (terminate) + return; + + ksft_print_msg("Got signal, exiting...\n"); + + terminate = true; + + /* + * This should be redundant, the main loop should clean up + * after us, but for safety stop everything we can here. + */ + for (i = 0; i < num_children; i++) + child_stop(&children[i]); +} + +/* Handle any pending output without blocking */ +static void drain_output(bool flush) +{ + int ret = 1; + int i; + + while (ret > 0) { + ret = epoll_wait(epoll_fd, evs, tests, 0); + if (ret < 0) { + if (errno == EINTR) + continue; + ksft_print_msg("epoll_wait() failed: %s (%d)\n", + strerror(errno), errno); + } + + for (i = 0; i < ret; i++) + child_output(evs[i].data.ptr, evs[i].events, flush); + } +} + +static const struct option options[] = { + { "timeout", required_argument, NULL, 't' }, + { } +}; + +int main(int argc, char **argv) +{ + int seen_children; + bool all_children_started = false; + int gcs_threads; + int timeout = 10; + int ret, cpus, i, c; + struct sigaction sa; + + while ((c = getopt_long(argc, argv, "t:", options, NULL)) != -1) { + switch (c) { + case 't': + ret = sscanf(optarg, "%d", &timeout); + if (ret != 1) + ksft_exit_fail_msg("Failed to parse timeout %s\n", + optarg); + break; + default: + ksft_exit_fail_msg("Unknown argument\n"); + } + } + + cpus = num_processors(); + tests = 0; + + if (getauxval(AT_HWCAP) & HWCAP_GCS) { + /* One extra thread, trying to trigger migrations */ + gcs_threads = cpus + 1; + tests += gcs_threads; + } else { + gcs_threads = 0; + } + + ksft_print_header(); + ksft_set_plan(tests); + + ksft_print_msg("%d CPUs, %d GCS threads\n", + cpus, gcs_threads); + + if (!tests) + ksft_exit_skip("No tests scheduled\n"); + + if (timeout > 0) + ksft_print_msg("Will run for %ds\n", timeout); + else + ksft_print_msg("Will run until terminated\n"); + + children = calloc(sizeof(*children), tests); + if (!children) + ksft_exit_fail_msg("Unable to allocate child data\n"); + + ret = epoll_create1(EPOLL_CLOEXEC); + if (ret < 0) + ksft_exit_fail_msg("epoll_create1() failed: %s (%d)\n", + strerror(errno), ret); + epoll_fd = ret; + + /* Create a pipe which children will block on before execing */ + ret = pipe(startup_pipe); + if (ret != 0) + ksft_exit_fail_msg("Failed to create startup pipe: %s (%d)\n", + strerror(errno), errno); + + /* Get signal handers ready before we start any children */ + memset(&sa, 0, sizeof(sa)); + sa.sa_sigaction = handle_exit_signal; + sa.sa_flags = SA_RESTART | SA_SIGINFO; + sigemptyset(&sa.sa_mask); + ret = sigaction(SIGINT, &sa, NULL); + if (ret < 0) + ksft_print_msg("Failed to install SIGINT handler: %s (%d)\n", + strerror(errno), errno); + ret = sigaction(SIGTERM, &sa, NULL); + if (ret < 0) + ksft_print_msg("Failed to install SIGTERM handler: %s (%d)\n", + strerror(errno), errno); + sa.sa_sigaction = handle_child_signal; + ret = sigaction(SIGCHLD, &sa, NULL); + if (ret < 0) + ksft_print_msg("Failed to install SIGCHLD handler: %s (%d)\n", + strerror(errno), errno); + + evs = calloc(tests, sizeof(*evs)); + if (!evs) + ksft_exit_fail_msg("Failed to allocated %d epoll events\n", + tests); + + for (i = 0; i < gcs_threads; i++) + start_thread(&children[i]); + + /* + * All children started, close the startup pipe and let them + * run. + */ + close(startup_pipe[0]); + close(startup_pipe[1]); + + timeout *= 10; + for (;;) { + /* Did we get a signal asking us to exit? */ + if (terminate) + break; + + /* + * Timeout is counted in 100ms with no output, the + * tests print during startup then are silent when + * running so this should ensure they all ran enough + * to install the signal handler, this is especially + * useful in emulation where we will both be slow and + * likely to have a large set of VLs. + */ + ret = epoll_wait(epoll_fd, evs, tests, 100); + if (ret < 0) { + if (errno == EINTR) + continue; + ksft_exit_fail_msg("epoll_wait() failed: %s (%d)\n", + strerror(errno), errno); + } + + /* Output? */ + if (ret > 0) { + for (i = 0; i < ret; i++) { + child_output(evs[i].data.ptr, evs[i].events, + false); + } + continue; + } + + /* Otherwise epoll_wait() timed out */ + + /* + * If the child processes have not produced output they + * aren't actually running the tests yet. + */ + if (!all_children_started) { + seen_children = 0; + + for (i = 0; i < num_children; i++) + if (children[i].output_seen || + children[i].exited) + seen_children++; + + if (seen_children != num_children) { + ksft_print_msg("Waiting for %d children\n", + num_children - seen_children); + continue; + } + + all_children_started = true; + } + + ksft_print_msg("Sending signals, timeout remaining: %d00ms\n", + timeout); + + for (i = 0; i < num_children; i++) + child_tickle(&children[i]); + + /* Negative timeout means run indefinitely */ + if (timeout < 0) + continue; + if (--timeout == 0) + break; + } + + ksft_print_msg("Finishing up...\n"); + terminate = true; + + for (i = 0; i < tests; i++) + child_stop(&children[i]); + + drain_output(false); + + for (i = 0; i < tests; i++) + child_cleanup(&children[i]); + + drain_output(true); + + ksft_finished(); +} -- cgit v1.2.3 From bb9ae1a66c85eeb626864efd812c62026e126ec0 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 1 Oct 2024 23:59:18 +0100 Subject: kselftest/arm64: Enable GCS for the FP stress tests While it's a bit off topic for them the floating point stress tests do give us some coverage of context thrashing cases, and also of active signal delivery separate to the relatively complicated framework in the actual signals tests. Have the tests enable GCS on startup, ignoring failures so they continue to work as before on systems without GCS. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-39-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/assembler.h | 15 +++++++++++++++ tools/testing/selftests/arm64/fp/fpsimd-test.S | 2 ++ tools/testing/selftests/arm64/fp/sve-test.S | 2 ++ tools/testing/selftests/arm64/fp/za-test.S | 2 ++ tools/testing/selftests/arm64/fp/zt-test.S | 2 ++ 5 files changed, 23 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/assembler.h b/tools/testing/selftests/arm64/fp/assembler.h index 9b38a0da407d..1fc46a5642c2 100644 --- a/tools/testing/selftests/arm64/fp/assembler.h +++ b/tools/testing/selftests/arm64/fp/assembler.h @@ -65,4 +65,19 @@ endfunction bl puts .endm +#define PR_SET_SHADOW_STACK_STATUS 75 +# define PR_SHADOW_STACK_ENABLE (1UL << 0) + +.macro enable_gcs + // Run with GCS + mov x0, PR_SET_SHADOW_STACK_STATUS + mov x1, PR_SHADOW_STACK_ENABLE + mov x2, xzr + mov x3, xzr + mov x4, xzr + mov x5, xzr + mov x8, #__NR_prctl + svc #0 +.endm + #endif /* ! ASSEMBLER_H */ diff --git a/tools/testing/selftests/arm64/fp/fpsimd-test.S b/tools/testing/selftests/arm64/fp/fpsimd-test.S index 8b960d01ed2e..b16fb7f42e3e 100644 --- a/tools/testing/selftests/arm64/fp/fpsimd-test.S +++ b/tools/testing/selftests/arm64/fp/fpsimd-test.S @@ -215,6 +215,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index fff60e2a25ad..2fb4f0b84476 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -378,6 +378,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // Irritation signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/selftests/arm64/fp/za-test.S index 095b45531640..b2603aba99de 100644 --- a/tools/testing/selftests/arm64/fp/za-test.S +++ b/tools/testing/selftests/arm64/fp/za-test.S @@ -231,6 +231,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/zt-test.S b/tools/testing/selftests/arm64/fp/zt-test.S index b5c81e81a379..8d9609a49008 100644 --- a/tools/testing/selftests/arm64/fp/zt-test.S +++ b/tools/testing/selftests/arm64/fp/zt-test.S @@ -200,6 +200,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT -- cgit v1.2.3 From 0b838d768ccdbdfbcaed5f4b18b4bf63e53a0e0d Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 1 Oct 2024 16:30:09 +0200 Subject: selftests/hid: add dependency on hid_common.h Allows to recompile the C tests when that file changes Reviewed-by: Peter Hutterer Acked-by: Shuah Khan Link: https://patch.msgid.link/20241001-hid-bpf-hid-generic-v3-5-2ef1019468df@kernel.org Signed-off-by: Benjamin Tissoires --- tools/testing/selftests/hid/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/hid/Makefile b/tools/testing/selftests/hid/Makefile index 72be55ac4bdf..9399fa3f2f9d 100644 --- a/tools/testing/selftests/hid/Makefile +++ b/tools/testing/selftests/hid/Makefile @@ -229,7 +229,7 @@ $(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT) $(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $< $(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@ -$(OUTPUT)/%.o: %.c $(BPF_SKELS) +$(OUTPUT)/%.o: %.c $(BPF_SKELS) hid_common.h $(call msg,CC,,$@) $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ -- cgit v1.2.3 From 4fb41dfde0699796b955eb94e7b8037a67b4b3a5 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 1 Oct 2024 16:30:10 +0200 Subject: selftests/hid: cleanup C tests by adding a common struct uhid_device Allows to have an abstract class uhid_device which handles all of the uhid part without having to mess up with individual fds. struct attach_prog_args is now never used in hid_bpf.c, so drop it as well Acked-by: Shuah Khan Link: https://patch.msgid.link/20241001-hid-bpf-hid-generic-v3-6-2ef1019468df@kernel.org Signed-off-by: Benjamin Tissoires --- tools/testing/selftests/hid/hid_bpf.c | 77 +++++++++++--------------------- tools/testing/selftests/hid/hid_common.h | 74 ++++++++++++++++++++---------- tools/testing/selftests/hid/hidraw.c | 36 +++++---------- 3 files changed, 87 insertions(+), 100 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/hid/hid_bpf.c b/tools/testing/selftests/hid/hid_bpf.c index 86f4d66379f7..31ff92e0debd 100644 --- a/tools/testing/selftests/hid/hid_bpf.c +++ b/tools/testing/selftests/hid/hid_bpf.c @@ -4,13 +4,6 @@ #include "hid_common.h" #include -struct attach_prog_args { - int prog_fd; - unsigned int hid; - int retval; - int insert_head; -}; - struct hid_hw_request_syscall_args { __u8 data[10]; unsigned int hid; @@ -21,11 +14,8 @@ struct hid_hw_request_syscall_args { }; FIXTURE(hid_bpf) { - int dev_id; - int uhid_fd; + struct uhid_device hid; int hidraw_fd; - int hid_id; - pthread_t tid; struct hid *skel; struct bpf_link *hid_links[3]; /* max number of programs loaded in a single test */ }; @@ -54,10 +44,10 @@ static void detach_bpf(FIXTURE_DATA(hid_bpf) * self) FIXTURE_TEARDOWN(hid_bpf) { void *uhid_err; - uhid_destroy(_metadata, self->uhid_fd); + uhid_destroy(_metadata, &self->hid); detach_bpf(self); - pthread_join(self->tid, &uhid_err); + pthread_join(self->hid.tid, &uhid_err); } #define TEARDOWN_LOG(fmt, ...) do { \ TH_LOG(fmt, ##__VA_ARGS__); \ @@ -66,23 +56,10 @@ FIXTURE_TEARDOWN(hid_bpf) { FIXTURE_SETUP(hid_bpf) { - time_t t; int err; - /* initialize random number generator */ - srand((unsigned int)time(&t)); - - self->dev_id = rand() % 1024; - - self->uhid_fd = setup_uhid(_metadata, self->dev_id); - - /* locate the uev, self, variant);ent file of the created device */ - self->hid_id = get_hid_id(self->dev_id); - ASSERT_GT(self->hid_id, 0) - TEARDOWN_LOG("Could not locate uhid device id: %d", self->hid_id); - - err = uhid_start_listener(_metadata, &self->tid, self->uhid_fd); - ASSERT_EQ(0, err) TEARDOWN_LOG("could not start udev listener: %d", err); + err = setup_uhid(_metadata, &self->hid); + ASSERT_OK(err); } struct test_program { @@ -129,7 +106,7 @@ static void load_programs(const struct test_program programs[], ops_hid_id = bpf_map__initial_value(map, NULL); ASSERT_OK_PTR(ops_hid_id) TH_LOG("unable to retrieve struct_ops data"); - *ops_hid_id = self->hid_id; + *ops_hid_id = self->hid.hid_id; } /* we disable the auto-attach feature of all maps because we @@ -157,7 +134,7 @@ static void load_programs(const struct test_program programs[], hid__attach(self->skel); - self->hidraw_fd = open_hidraw(self->dev_id); + self->hidraw_fd = open_hidraw(&self->hid); ASSERT_GE(self->hidraw_fd, 0) TH_LOG("open_hidraw"); } @@ -192,7 +169,7 @@ TEST_F(hid_bpf, raw_event) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* check that hid_first_event() was executed */ ASSERT_EQ(self->skel->data->callback_check, 42) TH_LOG("callback_check1"); @@ -208,7 +185,7 @@ TEST_F(hid_bpf, raw_event) memset(buf, 0, sizeof(buf)); buf[0] = 1; buf[1] = 47; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* check that hid_first_event() was executed */ ASSERT_EQ(self->skel->data->callback_check, 47) TH_LOG("callback_check1"); @@ -239,7 +216,7 @@ TEST_F(hid_bpf, subprog_raw_event) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -252,7 +229,7 @@ TEST_F(hid_bpf, subprog_raw_event) memset(buf, 0, sizeof(buf)); buf[0] = 1; buf[1] = 47; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -303,7 +280,7 @@ TEST_F(hid_bpf, test_attach_detach) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -326,14 +303,14 @@ TEST_F(hid_bpf, test_attach_detach) /* detach the program */ detach_bpf(self); - self->hidraw_fd = open_hidraw(self->dev_id); + self->hidraw_fd = open_hidraw(&self->hid); ASSERT_GE(self->hidraw_fd, 0) TH_LOG("open_hidraw"); /* inject another event */ memset(buf, 0, sizeof(buf)); buf[0] = 1; buf[1] = 47; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -352,7 +329,7 @@ TEST_F(hid_bpf, test_attach_detach) memset(buf, 0, sizeof(buf)); buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -382,7 +359,7 @@ TEST_F(hid_bpf, test_hid_change_report) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -412,7 +389,7 @@ TEST_F(hid_bpf, test_hid_user_input_report_call) LOAD_BPF; - args.hid = self->hid_id; + args.hid = self->hid.hid_id; args.data[0] = 1; /* report ID */ args.data[1] = 2; /* report ID */ args.data[2] = 42; /* report ID */ @@ -458,7 +435,7 @@ TEST_F(hid_bpf, test_hid_user_output_report_call) LOAD_BPF; - args.hid = self->hid_id; + args.hid = self->hid.hid_id; args.data[0] = 1; /* report ID */ args.data[1] = 2; /* report ID */ args.data[2] = 42; /* report ID */ @@ -506,7 +483,7 @@ TEST_F(hid_bpf, test_hid_user_raw_request_call) LOAD_BPF; - args.hid = self->hid_id; + args.hid = self->hid.hid_id; args.data[0] = 1; /* report ID */ prog_fd = bpf_program__fd(self->skel->progs.hid_user_raw_request); @@ -539,7 +516,7 @@ TEST_F(hid_bpf, test_hid_filter_raw_request_call) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -565,7 +542,7 @@ TEST_F(hid_bpf, test_hid_filter_raw_request_call) /* detach the program */ detach_bpf(self); - self->hidraw_fd = open_hidraw(self->dev_id); + self->hidraw_fd = open_hidraw(&self->hid); ASSERT_GE(self->hidraw_fd, 0) TH_LOG("open_hidraw"); err = ioctl(self->hidraw_fd, HIDIOCGFEATURE(sizeof(buf)), buf); @@ -641,7 +618,7 @@ TEST_F(hid_bpf, test_hid_filter_output_report_call) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -667,7 +644,7 @@ TEST_F(hid_bpf, test_hid_filter_output_report_call) /* detach the program */ detach_bpf(self); - self->hidraw_fd = open_hidraw(self->dev_id); + self->hidraw_fd = open_hidraw(&self->hid); ASSERT_GE(self->hidraw_fd, 0) TH_LOG("open_hidraw"); err = write(self->hidraw_fd, buf, 3); @@ -742,7 +719,7 @@ TEST_F(hid_bpf, test_multiply_events_wq) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -780,7 +757,7 @@ TEST_F(hid_bpf, test_multiply_events) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -816,7 +793,7 @@ TEST_F(hid_bpf, test_hid_infinite_loop_input_report_call) buf[1] = 2; buf[2] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -867,7 +844,7 @@ TEST_F(hid_bpf, test_hid_attach_flags) /* inject one event */ buf[0] = 1; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); diff --git a/tools/testing/selftests/hid/hid_common.h b/tools/testing/selftests/hid/hid_common.h index f151f151a1ed..a7d836a35bb1 100644 --- a/tools/testing/selftests/hid/hid_common.h +++ b/tools/testing/selftests/hid/hid_common.h @@ -19,6 +19,13 @@ __typeof__(b) _b = (b); \ _a < _b ? _a : _b; }) +struct uhid_device { + int dev_id; /* uniq (random) number to identify the device */ + int uhid_fd; + int hid_id; /* HID device id in the system */ + pthread_t tid; /* thread for reading uhid events */ +}; + static unsigned char rdesc[] = { 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */ 0x09, 0x21, /* Usage (Vendor Usage 0x21) */ @@ -146,14 +153,14 @@ static int uhid_create(struct __test_metadata *_metadata, int fd, int rand_nb) return uhid_write(_metadata, fd, &ev); } -static void uhid_destroy(struct __test_metadata *_metadata, int fd) +static void uhid_destroy(struct __test_metadata *_metadata, struct uhid_device *hid) { struct uhid_event ev; memset(&ev, 0, sizeof(ev)); ev.type = UHID_DESTROY; - uhid_write(_metadata, fd, &ev); + uhid_write(_metadata, hid->uhid_fd, &ev); } static int uhid_event(struct __test_metadata *_metadata, int fd) @@ -281,7 +288,8 @@ static int uhid_start_listener(struct __test_metadata *_metadata, pthread_t *tid return 0; } -static int uhid_send_event(struct __test_metadata *_metadata, int fd, __u8 *buf, size_t size) +static int uhid_send_event(struct __test_metadata *_metadata, struct uhid_device *hid, + __u8 *buf, size_t size) { struct uhid_event ev; @@ -294,25 +302,7 @@ static int uhid_send_event(struct __test_metadata *_metadata, int fd, __u8 *buf, memcpy(ev.u.input2.data, buf, size); - return uhid_write(_metadata, fd, &ev); -} - -static int setup_uhid(struct __test_metadata *_metadata, int rand_nb) -{ - int fd; - const char *path = "/dev/uhid"; - int ret; - - fd = open(path, O_RDWR | O_CLOEXEC); - ASSERT_GE(fd, 0) TH_LOG("open uhid-cdev failed; %d", fd); - - ret = uhid_create(_metadata, fd, rand_nb); - ASSERT_EQ(0, ret) { - TH_LOG("create uhid device failed: %d", ret); - close(fd); - } - - return fd; + return uhid_write(_metadata, hid->uhid_fd, &ev); } static bool match_sysfs_device(int dev_id, const char *workdir, struct dirent *dir) @@ -421,12 +411,12 @@ static int get_hidraw(int dev_id) return found; } -static int open_hidraw(int dev_id) +static int open_hidraw(struct uhid_device *hid) { int hidraw_number; char hidraw_path[64] = { 0 }; - hidraw_number = get_hidraw(dev_id); + hidraw_number = get_hidraw(hid->dev_id); if (hidraw_number < 0) return hidraw_number; @@ -434,3 +424,39 @@ static int open_hidraw(int dev_id) sprintf(hidraw_path, "/dev/hidraw%d", hidraw_number); return open(hidraw_path, O_RDWR | O_NONBLOCK); } + +static int setup_uhid(struct __test_metadata *_metadata, struct uhid_device *hid) +{ + const char *path = "/dev/uhid"; + time_t t; + int ret; + + /* initialize random number generator */ + srand((unsigned int)time(&t)); + + hid->dev_id = rand() % 1024; + + hid->uhid_fd = open(path, O_RDWR | O_CLOEXEC); + ASSERT_GE(hid->uhid_fd, 0) TH_LOG("open uhid-cdev failed; %d", hid->uhid_fd); + + ret = uhid_create(_metadata, hid->uhid_fd, hid->dev_id); + ASSERT_EQ(0, ret) { + TH_LOG("create uhid device failed: %d", ret); + close(hid->uhid_fd); + return ret; + } + + /* locate the uevent file of the created device */ + hid->hid_id = get_hid_id(hid->dev_id); + ASSERT_GT(hid->hid_id, 0) + TH_LOG("Could not locate uhid device id: %d", hid->hid_id); + + ret = uhid_start_listener(_metadata, &hid->tid, hid->uhid_fd); + ASSERT_EQ(0, ret) { + TH_LOG("could not start udev listener: %d", ret); + close(hid->uhid_fd); + return ret; + } + + return 0; +} diff --git a/tools/testing/selftests/hid/hidraw.c b/tools/testing/selftests/hid/hidraw.c index f8b4f7ff292c..5934818b2036 100644 --- a/tools/testing/selftests/hid/hidraw.c +++ b/tools/testing/selftests/hid/hidraw.c @@ -9,11 +9,8 @@ #endif /* HIDIOCREVOKE */ FIXTURE(hidraw) { - int dev_id; - int uhid_fd; + struct uhid_device hid; int hidraw_fd; - int hid_id; - pthread_t tid; }; static void close_hidraw(FIXTURE_DATA(hidraw) * self) { @@ -25,10 +22,10 @@ static void close_hidraw(FIXTURE_DATA(hidraw) * self) FIXTURE_TEARDOWN(hidraw) { void *uhid_err; - uhid_destroy(_metadata, self->uhid_fd); + uhid_destroy(_metadata, &self->hid); close_hidraw(self); - pthread_join(self->tid, &uhid_err); + pthread_join(self->hid.tid, &uhid_err); } #define TEARDOWN_LOG(fmt, ...) do { \ TH_LOG(fmt, ##__VA_ARGS__); \ @@ -37,25 +34,12 @@ FIXTURE_TEARDOWN(hidraw) { FIXTURE_SETUP(hidraw) { - time_t t; int err; - /* initialize random number generator */ - srand((unsigned int)time(&t)); + err = setup_uhid(_metadata, &self->hid); + ASSERT_OK(err); - self->dev_id = rand() % 1024; - - self->uhid_fd = setup_uhid(_metadata, self->dev_id); - - /* locate the uev, self, variant);ent file of the created device */ - self->hid_id = get_hid_id(self->dev_id); - ASSERT_GT(self->hid_id, 0) - TEARDOWN_LOG("Could not locate uhid device id: %d", self->hid_id); - - err = uhid_start_listener(_metadata, &self->tid, self->uhid_fd); - ASSERT_EQ(0, err) TEARDOWN_LOG("could not start udev listener: %d", err); - - self->hidraw_fd = open_hidraw(self->dev_id); + self->hidraw_fd = open_hidraw(&self->hid); ASSERT_GE(self->hidraw_fd, 0) TH_LOG("open_hidraw"); } @@ -79,7 +63,7 @@ TEST_F(hidraw, raw_event) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -101,7 +85,7 @@ TEST_F(hidraw, raw_event_revoked) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -117,7 +101,7 @@ TEST_F(hidraw, raw_event_revoked) /* inject one other event */ buf[0] = 1; buf[1] = 43; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); @@ -161,7 +145,7 @@ TEST_F(hidraw, poll_revoked) /* inject one event */ buf[0] = 1; buf[1] = 42; - uhid_send_event(_metadata, self->uhid_fd, buf, 6); + uhid_send_event(_metadata, &self->hid, buf, 6); while (true) { ready = poll(pfds, 1, 5000); -- cgit v1.2.3 From 72c55473fc8c82b06df79473f04c5231d51580d7 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 1 Oct 2024 16:30:11 +0200 Subject: selftests/hid: allow to parametrize bus/vid/pid/rdesc on the test device This will be useful to introduce variants in tests to test the interactions between HID-BPF and some kernel modules. Reviewed-by: Peter Hutterer Acked-by: Shuah Khan Link: https://patch.msgid.link/20241001-hid-bpf-hid-generic-v3-7-2ef1019468df@kernel.org Signed-off-by: Benjamin Tissoires --- tools/testing/selftests/hid/hid_bpf.c | 2 +- tools/testing/selftests/hid/hid_common.h | 46 ++++++++++++++++++++------------ tools/testing/selftests/hid/hidraw.c | 2 +- 3 files changed, 31 insertions(+), 19 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/hid/hid_bpf.c b/tools/testing/selftests/hid/hid_bpf.c index 31ff92e0debd..1e979fb3542b 100644 --- a/tools/testing/selftests/hid/hid_bpf.c +++ b/tools/testing/selftests/hid/hid_bpf.c @@ -58,7 +58,7 @@ FIXTURE_SETUP(hid_bpf) { int err; - err = setup_uhid(_metadata, &self->hid); + err = setup_uhid(_metadata, &self->hid, BUS_USB, 0x0001, 0x0a36, rdesc, sizeof(rdesc)); ASSERT_OK(err); } diff --git a/tools/testing/selftests/hid/hid_common.h b/tools/testing/selftests/hid/hid_common.h index a7d836a35bb1..f77f69c6657d 100644 --- a/tools/testing/selftests/hid/hid_common.h +++ b/tools/testing/selftests/hid/hid_common.h @@ -23,6 +23,9 @@ struct uhid_device { int dev_id; /* uniq (random) number to identify the device */ int uhid_fd; int hid_id; /* HID device id in the system */ + __u16 bus; + __u32 vid; + __u32 pid; pthread_t tid; /* thread for reading uhid events */ }; @@ -129,7 +132,9 @@ static int uhid_write(struct __test_metadata *_metadata, int fd, const struct uh } } -static int uhid_create(struct __test_metadata *_metadata, int fd, int rand_nb) +static int uhid_create(struct __test_metadata *_metadata, int fd, int rand_nb, + __u16 bus, __u32 vid, __u32 pid, __u8 *rdesc, + size_t rdesc_size) { struct uhid_event ev; char buf[25]; @@ -140,10 +145,10 @@ static int uhid_create(struct __test_metadata *_metadata, int fd, int rand_nb) ev.type = UHID_CREATE; strcpy((char *)ev.u.create.name, buf); ev.u.create.rd_data = rdesc; - ev.u.create.rd_size = sizeof(rdesc); - ev.u.create.bus = BUS_USB; - ev.u.create.vendor = 0x0001; - ev.u.create.product = 0x0a37; + ev.u.create.rd_size = rdesc_size; + ev.u.create.bus = bus; + ev.u.create.vendor = vid; + ev.u.create.product = pid; ev.u.create.version = 0; ev.u.create.country = 0; @@ -305,15 +310,17 @@ static int uhid_send_event(struct __test_metadata *_metadata, struct uhid_device return uhid_write(_metadata, hid->uhid_fd, &ev); } -static bool match_sysfs_device(int dev_id, const char *workdir, struct dirent *dir) +static bool match_sysfs_device(struct uhid_device *hid, const char *workdir, struct dirent *dir) { - const char *target = "0003:0001:0A37.*"; + char target[20] = ""; char phys[512]; char uevent[1024]; char temp[512]; int fd, nread; bool found = false; + snprintf(target, sizeof(target), "%04X:%04X:%04X.*", hid->bus, hid->vid, hid->pid); + if (fnmatch(target, dir->d_name, 0)) return false; @@ -324,7 +331,7 @@ static bool match_sysfs_device(int dev_id, const char *workdir, struct dirent *d if (fd < 0) return false; - sprintf(phys, "PHYS=%d", dev_id); + sprintf(phys, "PHYS=%d", hid->dev_id); nread = read(fd, temp, ARRAY_SIZE(temp)); if (nread > 0 && (strstr(temp, phys)) != NULL) @@ -335,7 +342,7 @@ static bool match_sysfs_device(int dev_id, const char *workdir, struct dirent *d return found; } -static int get_hid_id(int dev_id) +static int get_hid_id(struct uhid_device *hid) { const char *workdir = "/sys/devices/virtual/misc/uhid"; const char *str_id; @@ -350,10 +357,10 @@ static int get_hid_id(int dev_id) d = opendir(workdir); if (d) { while ((dir = readdir(d)) != NULL) { - if (!match_sysfs_device(dev_id, workdir, dir)) + if (!match_sysfs_device(hid, workdir, dir)) continue; - str_id = dir->d_name + sizeof("0003:0001:0A37."); + str_id = dir->d_name + sizeof("0000:0000:0000."); found = (int)strtol(str_id, NULL, 16); break; @@ -367,7 +374,7 @@ static int get_hid_id(int dev_id) return found; } -static int get_hidraw(int dev_id) +static int get_hidraw(struct uhid_device *hid) { const char *workdir = "/sys/devices/virtual/misc/uhid"; char sysfs[1024]; @@ -384,7 +391,7 @@ static int get_hidraw(int dev_id) continue; while ((dir = readdir(d)) != NULL) { - if (!match_sysfs_device(dev_id, workdir, dir)) + if (!match_sysfs_device(hid, workdir, dir)) continue; sprintf(sysfs, "%s/%s/hidraw", workdir, dir->d_name); @@ -416,7 +423,7 @@ static int open_hidraw(struct uhid_device *hid) int hidraw_number; char hidraw_path[64] = { 0 }; - hidraw_number = get_hidraw(hid->dev_id); + hidraw_number = get_hidraw(hid); if (hidraw_number < 0) return hidraw_number; @@ -425,7 +432,8 @@ static int open_hidraw(struct uhid_device *hid) return open(hidraw_path, O_RDWR | O_NONBLOCK); } -static int setup_uhid(struct __test_metadata *_metadata, struct uhid_device *hid) +static int setup_uhid(struct __test_metadata *_metadata, struct uhid_device *hid, + __u16 bus, __u32 vid, __u32 pid, const __u8 *rdesc, size_t rdesc_size) { const char *path = "/dev/uhid"; time_t t; @@ -435,11 +443,15 @@ static int setup_uhid(struct __test_metadata *_metadata, struct uhid_device *hid srand((unsigned int)time(&t)); hid->dev_id = rand() % 1024; + hid->bus = bus; + hid->vid = vid; + hid->pid = pid; hid->uhid_fd = open(path, O_RDWR | O_CLOEXEC); ASSERT_GE(hid->uhid_fd, 0) TH_LOG("open uhid-cdev failed; %d", hid->uhid_fd); - ret = uhid_create(_metadata, hid->uhid_fd, hid->dev_id); + ret = uhid_create(_metadata, hid->uhid_fd, hid->dev_id, bus, vid, pid, + (__u8 *)rdesc, rdesc_size); ASSERT_EQ(0, ret) { TH_LOG("create uhid device failed: %d", ret); close(hid->uhid_fd); @@ -447,7 +459,7 @@ static int setup_uhid(struct __test_metadata *_metadata, struct uhid_device *hid } /* locate the uevent file of the created device */ - hid->hid_id = get_hid_id(hid->dev_id); + hid->hid_id = get_hid_id(hid); ASSERT_GT(hid->hid_id, 0) TH_LOG("Could not locate uhid device id: %d", hid->hid_id); diff --git a/tools/testing/selftests/hid/hidraw.c b/tools/testing/selftests/hid/hidraw.c index 5934818b2036..821db37ba4bb 100644 --- a/tools/testing/selftests/hid/hidraw.c +++ b/tools/testing/selftests/hid/hidraw.c @@ -36,7 +36,7 @@ FIXTURE_SETUP(hidraw) { int err; - err = setup_uhid(_metadata, &self->hid); + err = setup_uhid(_metadata, &self->hid, BUS_USB, 0x0001, 0x0a37, rdesc, sizeof(rdesc)); ASSERT_OK(err); self->hidraw_fd = open_hidraw(&self->hid); -- cgit v1.2.3 From e14e0eaeb040899f7cb363cdfdf8fbee84a45f08 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 1 Oct 2024 16:30:13 +0200 Subject: selftests/hid: add test for assigning a given device to hid-generic We use a well known VID/PID on a driver that doesn't need to talk to the device, ensures we created the device against the target driver, then load our program and ensure we have unbound to this driver and use hid-generic instead. Reviewed-by: Peter Hutterer Acked-by: Shuah Khan Link: https://patch.msgid.link/20241001-hid-bpf-hid-generic-v3-9-2ef1019468df@kernel.org Signed-off-by: Benjamin Tissoires --- tools/testing/selftests/hid/hid_bpf.c | 80 +++++++++++++++++++++- tools/testing/selftests/hid/progs/hid.c | 12 ++++ .../testing/selftests/hid/progs/hid_bpf_helpers.h | 6 +- 3 files changed, 96 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/hid/hid_bpf.c b/tools/testing/selftests/hid/hid_bpf.c index 1e979fb3542b..ca58bfa3ca65 100644 --- a/tools/testing/selftests/hid/hid_bpf.c +++ b/tools/testing/selftests/hid/hid_bpf.c @@ -54,11 +54,41 @@ FIXTURE_TEARDOWN(hid_bpf) { hid_bpf_teardown(_metadata, self, variant); \ } while (0) +struct specific_device { + const char test_name[64]; + __u16 bus; + __u32 vid; + __u32 pid; +}; + FIXTURE_SETUP(hid_bpf) { + const struct specific_device *match = NULL; int err; - err = setup_uhid(_metadata, &self->hid, BUS_USB, 0x0001, 0x0a36, rdesc, sizeof(rdesc)); + const struct specific_device devices[] = { + { + .test_name = "test_hid_driver_probe", + .bus = BUS_BLUETOOTH, + .vid = 0x05ac, /* USB_VENDOR_ID_APPLE */ + .pid = 0x022c, /* USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI */ + }, { + .test_name = "*", + .bus = BUS_USB, + .vid = 0x0001, + .pid = 0x0a36, + }}; + + for (int i = 0; i < ARRAY_SIZE(devices); i++) { + match = &devices[i]; + if (!strncmp(_metadata->name, devices[i].test_name, sizeof(devices[i].test_name))) + break; + } + + ASSERT_OK_PTR(match); + + err = setup_uhid(_metadata, &self->hid, match->bus, match->vid, match->pid, + rdesc, sizeof(rdesc)); ASSERT_OK(err); } @@ -855,6 +885,54 @@ TEST_F(hid_bpf, test_hid_attach_flags) ASSERT_EQ(buf[3], 3); } +static bool is_using_driver(struct __test_metadata *_metadata, struct uhid_device *hid, + const char *driver) +{ + char driver_line[512]; + char uevent[1024]; + char temp[512]; + int fd, nread; + bool found = false; + + sprintf(uevent, "/sys/bus/hid/devices/%04X:%04X:%04X.%04X/uevent", + hid->bus, hid->vid, hid->pid, hid->hid_id); + + fd = open(uevent, O_RDONLY | O_NONBLOCK); + if (fd < 0) { + TH_LOG("couldn't open '%s': %d, %d", uevent, fd, errno); + return false; + } + + sprintf(driver_line, "DRIVER=%s", driver); + + nread = read(fd, temp, ARRAY_SIZE(temp)); + if (nread > 0 && (strstr(temp, driver_line)) != NULL) + found = true; + + close(fd); + + return found; +} + +/* + * Attach hid_driver_probe to the given uhid device, + * check that the device is now using hid-generic. + */ +TEST_F(hid_bpf, test_hid_driver_probe) +{ + const struct test_program progs[] = { + { + .name = "hid_test_driver_probe", + }, + }; + + ASSERT_TRUE(is_using_driver(_metadata, &self->hid, "apple")); + + LOAD_PROGRAMS(progs); + + ASSERT_TRUE(is_using_driver(_metadata, &self->hid, "hid-generic")); +} + /* * Attach hid_rdesc_fixup to the given uhid device, * retrieve and open the matching hidraw node, diff --git a/tools/testing/selftests/hid/progs/hid.c b/tools/testing/selftests/hid/progs/hid.c index 5ecc845ef792..9b22e9a0e658 100644 --- a/tools/testing/selftests/hid/progs/hid.c +++ b/tools/testing/selftests/hid/progs/hid.c @@ -598,3 +598,15 @@ SEC(".struct_ops.link") struct hid_bpf_ops test_infinite_loop_input_report = { .hid_device_event = (void *)hid_test_infinite_loop_input_report, }; + +SEC("?struct_ops.s/hid_rdesc_fixup") +int BPF_PROG(hid_test_driver_probe, struct hid_bpf_ctx *hid_ctx) +{ + hid_ctx->hid->quirks |= HID_QUIRK_IGNORE_SPECIAL_DRIVER; + return 0; +} + +SEC(".struct_ops.link") +struct hid_bpf_ops test_driver_probe = { + .hid_rdesc_fixup = (void *)hid_test_driver_probe, +}; diff --git a/tools/testing/selftests/hid/progs/hid_bpf_helpers.h b/tools/testing/selftests/hid/progs/hid_bpf_helpers.h index e5db897586bb..1a645684a117 100644 --- a/tools/testing/selftests/hid/progs/hid_bpf_helpers.h +++ b/tools/testing/selftests/hid/progs/hid_bpf_helpers.h @@ -84,10 +84,14 @@ struct hid_bpf_ops { struct hid_device *hdev; }; +#define BIT(n) (1U << n) + #ifndef BPF_F_BEFORE -#define BPF_F_BEFORE (1U << 3) +#define BPF_F_BEFORE BIT(3) #endif +#define HID_QUIRK_IGNORE_SPECIAL_DRIVER BIT(22) + /* following are kfuncs exported by HID for HID-BPF */ extern __u8 *hid_bpf_get_data(struct hid_bpf_ctx *ctx, unsigned int offset, -- cgit v1.2.3 From 3a546a67a4cc251b4ec2ba02d8f7aacf0bfc3148 Mon Sep 17 00:00:00 2001 From: Eder Zulian Date: Tue, 13 Aug 2024 16:23:38 +0200 Subject: rtla: use the definition for stdout fd when calling isatty() Use the STDOUT_FILENO definition when testing whether the standard output file descriptor refers to a terminal (for better redability). Link: https://lore.kernel.org/20240813142338.376039-1-ezulian@redhat.com Signed-off-by: Eder Zulian Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/osnoise_top.c | 2 +- tools/tracing/rtla/src/timerlat_top.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c index 2f756628613d..66e3a4382bc2 100644 --- a/tools/tracing/rtla/src/osnoise_top.c +++ b/tools/tracing/rtla/src/osnoise_top.c @@ -627,7 +627,7 @@ osnoise_top_apply_config(struct osnoise_tool *tool, struct osnoise_top_params *p auto_house_keeping(¶ms->monitored_cpus); } - if (isatty(1) && !params->quiet) + if (isatty(STDOUT_FILENO) && !params->quiet) params->pretty_output = 1; return 0; diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c index 8c16419fe22a..94a2f5bbaeb7 100644 --- a/tools/tracing/rtla/src/timerlat_top.c +++ b/tools/tracing/rtla/src/timerlat_top.c @@ -850,7 +850,7 @@ timerlat_top_apply_config(struct osnoise_tool *top, struct timerlat_top_params * } } - if (isatty(1) && !params->quiet) + if (isatty(STDOUT_FILENO) && !params->quiet) params->pretty_output = 1; return 0; -- cgit v1.2.3 From a89568e9be75845bdbba496f40e8cd0ea29c7af1 Mon Sep 17 00:00:00 2001 From: Vadim Fedorenko Date: Tue, 1 Oct 2024 05:57:16 -0700 Subject: selftests: txtimestamp: add SCM_TS_OPT_ID test Extend txtimestamp test to run with fixed tskey using SCM_TS_OPT_ID control message for all types of sockets. Reviewed-by: Jason Xing Reviewed-by: Willem de Bruijn Signed-off-by: Vadim Fedorenko Link: https://patch.msgid.link/20241001125716.2832769-4-vadfed@meta.com Signed-off-by: Jakub Kicinski --- tools/include/uapi/asm-generic/socket.h | 2 ++ tools/testing/selftests/net/txtimestamp.c | 44 +++++++++++++++++++++++------- tools/testing/selftests/net/txtimestamp.sh | 12 ++++---- 3 files changed, 43 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/include/uapi/asm-generic/socket.h b/tools/include/uapi/asm-generic/socket.h index 54d9c8bf7c55..281df9139d2b 100644 --- a/tools/include/uapi/asm-generic/socket.h +++ b/tools/include/uapi/asm-generic/socket.h @@ -124,6 +124,8 @@ #define SO_PASSPIDFD 76 #define SO_PEERPIDFD 77 +#define SCM_TS_OPT_ID 78 + #if !defined(__KERNEL__) #if __BITS_PER_LONG == 64 || (defined(__x86_64__) && defined(__ILP32__)) diff --git a/tools/testing/selftests/net/txtimestamp.c b/tools/testing/selftests/net/txtimestamp.c index d626f22f9550..dae91eb97d69 100644 --- a/tools/testing/selftests/net/txtimestamp.c +++ b/tools/testing/selftests/net/txtimestamp.c @@ -77,6 +77,8 @@ static bool cfg_epollet; static bool cfg_do_listen; static uint16_t dest_port = 9000; static bool cfg_print_nsec; +static uint32_t ts_opt_id; +static bool cfg_use_cmsg_opt_id; static struct sockaddr_in daddr; static struct sockaddr_in6 daddr6; @@ -136,12 +138,13 @@ static void validate_key(int tskey, int tstype) /* compare key for each subsequent request * must only test for one type, the first one requested */ - if (saved_tskey == -1) + if (saved_tskey == -1 || cfg_use_cmsg_opt_id) saved_tskey_type = tstype; else if (saved_tskey_type != tstype) return; stepsize = cfg_proto == SOCK_STREAM ? cfg_payload_len : 1; + stepsize = cfg_use_cmsg_opt_id ? 0 : stepsize; if (tskey != saved_tskey + stepsize) { fprintf(stderr, "ERROR: key %d, expected %d\n", tskey, saved_tskey + stepsize); @@ -484,7 +487,7 @@ static void fill_header_udp(void *p, bool is_ipv4) static void do_test(int family, unsigned int report_opt) { - char control[CMSG_SPACE(sizeof(uint32_t))]; + char control[2 * CMSG_SPACE(sizeof(uint32_t))]; struct sockaddr_ll laddr; unsigned int sock_opt; struct cmsghdr *cmsg; @@ -624,18 +627,32 @@ static void do_test(int family, unsigned int report_opt) msg.msg_iov = &iov; msg.msg_iovlen = 1; - if (cfg_use_cmsg) { + if (cfg_use_cmsg || cfg_use_cmsg_opt_id) { memset(control, 0, sizeof(control)); msg.msg_control = control; - msg.msg_controllen = sizeof(control); + msg.msg_controllen = cfg_use_cmsg * CMSG_SPACE(sizeof(uint32_t)); + msg.msg_controllen += cfg_use_cmsg_opt_id * CMSG_SPACE(sizeof(uint32_t)); - cmsg = CMSG_FIRSTHDR(&msg); - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SO_TIMESTAMPING; - cmsg->cmsg_len = CMSG_LEN(sizeof(uint32_t)); + cmsg = NULL; + if (cfg_use_cmsg) { + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SO_TIMESTAMPING; + cmsg->cmsg_len = CMSG_LEN(sizeof(uint32_t)); + + *((uint32_t *)CMSG_DATA(cmsg)) = report_opt; + } + if (cfg_use_cmsg_opt_id) { + cmsg = cmsg ? CMSG_NXTHDR(&msg, cmsg) : CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_TS_OPT_ID; + cmsg->cmsg_len = CMSG_LEN(sizeof(uint32_t)); + + *((uint32_t *)CMSG_DATA(cmsg)) = ts_opt_id; + saved_tskey = ts_opt_id; + } - *((uint32_t *) CMSG_DATA(cmsg)) = report_opt; } val = sendmsg(fd, &msg, 0); @@ -685,6 +702,7 @@ static void __attribute__((noreturn)) usage(const char *filepath) " -L listen on hostname and port\n" " -n: set no-payload option\n" " -N: print timestamps and durations in nsec (instead of usec)\n" + " -o N: use SCM_TS_OPT_ID control message to provide N as tskey\n" " -p N: connect to port N\n" " -P: use PF_PACKET\n" " -r: use raw\n" @@ -705,7 +723,7 @@ static void parse_opt(int argc, char **argv) int c; while ((c = getopt(argc, argv, - "46bc:CeEFhIl:LnNp:PrRS:t:uv:V:x")) != -1) { + "46bc:CeEFhIl:LnNo:p:PrRS:t:uv:V:x")) != -1) { switch (c) { case '4': do_ipv6 = 0; @@ -746,6 +764,10 @@ static void parse_opt(int argc, char **argv) case 'N': cfg_print_nsec = true; break; + case 'o': + ts_opt_id = strtoul(optarg, NULL, 10); + cfg_use_cmsg_opt_id = true; + break; case 'p': dest_port = strtoul(optarg, NULL, 10); break; @@ -803,6 +825,8 @@ static void parse_opt(int argc, char **argv) error(1, 0, "cannot ask for pktinfo over pf_packet"); if (cfg_busy_poll && cfg_use_epoll) error(1, 0, "pass epoll or busy_poll, not both"); + if (cfg_proto == SOCK_STREAM && cfg_use_cmsg_opt_id) + error(1, 0, "TCP sockets don't support SCM_TS_OPT_ID"); if (optind != argc - 1) error(1, 0, "missing required hostname argument"); diff --git a/tools/testing/selftests/net/txtimestamp.sh b/tools/testing/selftests/net/txtimestamp.sh index 25baca4b148e..fe4649bb8786 100755 --- a/tools/testing/selftests/net/txtimestamp.sh +++ b/tools/testing/selftests/net/txtimestamp.sh @@ -37,11 +37,13 @@ run_test_v4v6() { run_test_tcpudpraw() { local -r args=$@ - run_test_v4v6 ${args} # tcp - run_test_v4v6 ${args} -u # udp - run_test_v4v6 ${args} -r # raw - run_test_v4v6 ${args} -R # raw (IPPROTO_RAW) - run_test_v4v6 ${args} -P # pf_packet + run_test_v4v6 ${args} # tcp + run_test_v4v6 ${args} -u # udp + run_test_v4v6 ${args} -u -o 42 # udp with fixed tskey + run_test_v4v6 ${args} -r # raw + run_test_v4v6 ${args} -r -o 42 # raw + run_test_v4v6 ${args} -R # raw (IPPROTO_RAW) + run_test_v4v6 ${args} -P # pf_packet } run_test_all() { -- cgit v1.2.3 From f88b8871c70f10d692cc2cfa1fb020c281dd7603 Mon Sep 17 00:00:00 2001 From: Ba Jing Date: Tue, 3 Sep 2024 07:34:08 +0800 Subject: tools/rv: Correct the grammatical errors in the comments The form of "print" should be consistent with "parses". Link: https://lore.kernel.org/20240902233408.8684-1-bajing@cmss.chinamobile.com Signed-off-by: Ba Jing Signed-off-by: Steven Rostedt (Google) --- tools/verification/rv/src/in_kernel.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/verification/rv/src/in_kernel.c b/tools/verification/rv/src/in_kernel.c index f04479ecc96c..f2bbc75a76f4 100644 --- a/tools/verification/rv/src/in_kernel.c +++ b/tools/verification/rv/src/in_kernel.c @@ -332,7 +332,7 @@ static void ikm_print_header(struct trace_seq *s) * ikm_event_handler - callback to handle event events * * Called any time a rv:"monitor"_event events is generated. - * It parses and print event. + * It parses and prints event. */ static int ikm_event_handler(struct trace_seq *s, struct tep_record *record, @@ -384,7 +384,7 @@ ikm_event_handler(struct trace_seq *s, struct tep_record *record, * ikm_error_handler - callback to handle error events * * Called any time a rv:"monitor"_errors events is generated. - * It parses and print event. + * It parses and prints event. */ static int ikm_error_handler(struct trace_seq *s, struct tep_record *record, -- cgit v1.2.3 From 1c5e11b3ee9c1a583a6630148ed50346e5bbb59b Mon Sep 17 00:00:00 2001 From: Ba Jing Date: Tue, 3 Sep 2024 08:30:19 +0800 Subject: tools/rv: Correct the grammatical errors in the comments The word "trace" begins with a consonant sound, so "a" should be used instead of "an". Link: https://lore.kernel.org/20240903003019.8969-1-bajing@cmss.chinamobile.com Signed-off-by: Ba Jing Signed-off-by: Steven Rostedt (Google) --- tools/verification/rv/src/trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/verification/rv/src/trace.c b/tools/verification/rv/src/trace.c index 2c7deed47f8d..1b9f9bfa1893 100644 --- a/tools/verification/rv/src/trace.c +++ b/tools/verification/rv/src/trace.c @@ -81,7 +81,7 @@ void trace_instance_destroy(struct trace_instance *trace) } /** - * trace_instance_init - create an trace instance + * trace_instance_init - create a trace instance * * It is more than the tracefs instance, as it contains other * things required for the tracing, such as the local events and -- cgit v1.2.3 From 897408d5e2248b8f139d57fe8f8bab651f80e6e6 Mon Sep 17 00:00:00 2001 From: Justin Iurman Date: Wed, 2 Oct 2024 18:27:30 +0200 Subject: selftests: net: remove ioam tests This patch entirely removes the ioam selftests to prepare for the next patch in this series, which re-adds the new ioam selftests for better readability. Signed-off-by: Justin Iurman Link: https://patch.msgid.link/20241002162731.19847-2-justin.iurman@uliege.be Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/Makefile | 2 - tools/testing/selftests/net/config | 1 - tools/testing/selftests/net/ioam6.sh | 771 ----------------------------- tools/testing/selftests/net/ioam6_parser.c | 674 ------------------------- 4 files changed, 1448 deletions(-) delete mode 100755 tools/testing/selftests/net/ioam6.sh delete mode 100644 tools/testing/selftests/net/ioam6_parser.c (limited to 'tools') diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 649f1fe0dc46..ef40d099aa1c 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -28,7 +28,6 @@ TEST_PROGS += unicast_extensions.sh TEST_PROGS += udpgro_fwd.sh TEST_PROGS += udpgro_frglist.sh TEST_PROGS += veth.sh -TEST_PROGS += ioam6.sh TEST_PROGS += gro.sh TEST_PROGS += gre_gso.sh TEST_PROGS += cmsg_so_mark.sh @@ -67,7 +66,6 @@ TEST_GEN_FILES += fin_ack_lat TEST_GEN_FILES += reuseaddr_ports_exhausted TEST_GEN_FILES += hwtstamp_config rxtimestamp timestamping txtimestamp TEST_GEN_FILES += ipsec -TEST_GEN_FILES += ioam6_parser TEST_GEN_FILES += gro TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict tls tun tap epoll_busy_poll diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index 5b9baf708950..3f0b02835e78 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -95,7 +95,6 @@ CONFIG_NET_CLS_FLOWER=m CONFIG_NET_ACT_TUNNEL_KEY=m CONFIG_NET_ACT_MIRRED=m CONFIG_BAREUDP=m -CONFIG_IPV6_IOAM6_LWTUNNEL=y CONFIG_CRYPTO_SM4_GENERIC=y CONFIG_AMT=m CONFIG_TUN=y diff --git a/tools/testing/selftests/net/ioam6.sh b/tools/testing/selftests/net/ioam6.sh deleted file mode 100755 index 12491850ae98..000000000000 --- a/tools/testing/selftests/net/ioam6.sh +++ /dev/null @@ -1,771 +0,0 @@ -#!/bin/bash -# SPDX-License-Identifier: GPL-2.0+ -# -# Author: Justin Iurman -# -# This script evaluates the IOAM insertion for IPv6 by checking the IOAM data -# consistency directly inside packets on the receiver side. Tests are divided -# into three categories: OUTPUT (evaluates the IOAM processing by the sender), -# INPUT (evaluates the IOAM processing by a receiver) and GLOBAL (evaluates -# wider use cases that do not fall into the other two categories). Both OUTPUT -# and INPUT tests only use a two-node topology (alpha and beta), while GLOBAL -# tests use the entire three-node topology (alpha, beta, gamma). Each test is -# documented inside its own handler in the code below. -# -# An IOAM domain is configured from Alpha to Gamma but not on the reverse path. -# When either Beta or Gamma is the destination (depending on the test category), -# Alpha adds an IOAM option (Pre-allocated Trace) inside a Hop-by-hop. -# -# -# +-------------------+ +-------------------+ -# | | | | -# | Alpha netns | | Gamma netns | -# | | | | -# | +-------------+ | | +-------------+ | -# | | veth0 | | | | veth0 | | -# | | db01::2/64 | | | | db02::2/64 | | -# | +-------------+ | | +-------------+ | -# | . | | . | -# +-------------------+ +-------------------+ -# . . -# . . -# . . -# +----------------------------------------------------+ -# | . . | -# | +-------------+ +-------------+ | -# | | veth0 | | veth1 | | -# | | db01::1/64 | ................ | db02::1/64 | | -# | +-------------+ +-------------+ | -# | | -# | Beta netns | -# | | -# +----------------------------------------------------+ -# -# -# -# ============================================================= -# | Alpha - IOAM configuration | -# +===========================================================+ -# | Node ID | 1 | -# +-----------------------------------------------------------+ -# | Node Wide ID | 11111111 | -# +-----------------------------------------------------------+ -# | Ingress ID | 0xffff (default value) | -# +-----------------------------------------------------------+ -# | Ingress Wide ID | 0xffffffff (default value) | -# +-----------------------------------------------------------+ -# | Egress ID | 101 | -# +-----------------------------------------------------------+ -# | Egress Wide ID | 101101 | -# +-----------------------------------------------------------+ -# | Namespace Data | 0xdeadbee0 | -# +-----------------------------------------------------------+ -# | Namespace Wide Data | 0xcafec0caf00dc0de | -# +-----------------------------------------------------------+ -# | Schema ID | 777 | -# +-----------------------------------------------------------+ -# | Schema Data | something that will be 4n-aligned | -# +-----------------------------------------------------------+ -# -# -# ============================================================= -# | Beta - IOAM configuration | -# +===========================================================+ -# | Node ID | 2 | -# +-----------------------------------------------------------+ -# | Node Wide ID | 22222222 | -# +-----------------------------------------------------------+ -# | Ingress ID | 201 | -# +-----------------------------------------------------------+ -# | Ingress Wide ID | 201201 | -# +-----------------------------------------------------------+ -# | Egress ID | 202 | -# +-----------------------------------------------------------+ -# | Egress Wide ID | 202202 | -# +-----------------------------------------------------------+ -# | Namespace Data | 0xdeadbee1 | -# +-----------------------------------------------------------+ -# | Namespace Wide Data | 0xcafec0caf11dc0de | -# +-----------------------------------------------------------+ -# | Schema ID | 666 | -# +-----------------------------------------------------------+ -# | Schema Data | Hello there -Obi | -# +-----------------------------------------------------------+ -# -# -# ============================================================= -# | Gamma - IOAM configuration | -# +===========================================================+ -# | Node ID | 3 | -# +-----------------------------------------------------------+ -# | Node Wide ID | 33333333 | -# +-----------------------------------------------------------+ -# | Ingress ID | 301 | -# +-----------------------------------------------------------+ -# | Ingress Wide ID | 301301 | -# +-----------------------------------------------------------+ -# | Egress ID | 0xffff (default value) | -# +-----------------------------------------------------------+ -# | Egress Wide ID | 0xffffffff (default value) | -# +-----------------------------------------------------------+ -# | Namespace Data | 0xdeadbee2 | -# +-----------------------------------------------------------+ -# | Namespace Wide Data | 0xcafec0caf22dc0de | -# +-----------------------------------------------------------+ -# | Schema ID | 0xffffff (= None) | -# +-----------------------------------------------------------+ -# | Schema Data | | -# +-----------------------------------------------------------+ - -source lib.sh - -################################################################################ -# # -# WARNING: Be careful if you modify the block below - it MUST be kept # -# synchronized with configurations inside ioam6_parser.c and always # -# reflect the same. # -# # -################################################################################ - -ALPHA=( - 1 # ID - 11111111 # Wide ID - 0xffff # Ingress ID - 0xffffffff # Ingress Wide ID - 101 # Egress ID - 101101 # Egress Wide ID - 0xdeadbee0 # Namespace Data - 0xcafec0caf00dc0de # Namespace Wide Data - 777 # Schema ID (0xffffff = None) - "something that will be 4n-aligned" # Schema Data -) - -BETA=( - 2 - 22222222 - 201 - 201201 - 202 - 202202 - 0xdeadbee1 - 0xcafec0caf11dc0de - 666 - "Hello there -Obi" -) - -GAMMA=( - 3 - 33333333 - 301 - 301301 - 0xffff - 0xffffffff - 0xdeadbee2 - 0xcafec0caf22dc0de - 0xffffff - "" -) - -TESTS_OUTPUT=" - out_undef_ns - out_no_room - out_bits - out_full_supp_trace -" - -TESTS_INPUT=" - in_undef_ns - in_no_room - in_oflag - in_bits - in_full_supp_trace -" - -TESTS_GLOBAL=" - fwd_full_supp_trace -" - - -################################################################################ -# # -# LIBRARY # -# # -################################################################################ - -check_kernel_compatibility() -{ - setup_ns ioam_tmp_node - ip link add name veth0 netns $ioam_tmp_node type veth \ - peer name veth1 netns $ioam_tmp_node - - ip -netns $ioam_tmp_node link set veth0 up - ip -netns $ioam_tmp_node link set veth1 up - - ip -netns $ioam_tmp_node ioam namespace add 0 - ns_ad=$? - - ip -netns $ioam_tmp_node ioam namespace show | grep -q "namespace 0" - ns_sh=$? - - if [[ $ns_ad != 0 || $ns_sh != 0 ]] - then - echo "SKIP: kernel version probably too old, missing ioam support" - ip link del veth0 2>/dev/null || true - cleanup_ns $ioam_tmp_node || true - exit $ksft_skip - fi - - ip -netns $ioam_tmp_node route add db02::/64 encap ioam6 mode inline \ - trace prealloc type 0x800000 ns 0 size 4 dev veth0 - tr_ad=$? - - ip -netns $ioam_tmp_node -6 route | grep -q "encap ioam6" - tr_sh=$? - - if [[ $tr_ad != 0 || $tr_sh != 0 ]] - then - echo "SKIP: cannot attach an ioam trace to a route, did you compile" \ - "without CONFIG_IPV6_IOAM6_LWTUNNEL?" - ip link del veth0 2>/dev/null || true - cleanup_ns $ioam_tmp_node || true - exit $ksft_skip - fi - - ip link del veth0 2>/dev/null || true - cleanup_ns $ioam_tmp_node || true - - lsmod | grep -q "ip6_tunnel" - ip6tnl_loaded=$? - - if [ $ip6tnl_loaded = 0 ] - then - encap_tests=0 - else - modprobe ip6_tunnel &>/dev/null - lsmod | grep -q "ip6_tunnel" - encap_tests=$? - - if [ $encap_tests != 0 ] - then - ip a | grep -q "ip6tnl0" - encap_tests=$? - - if [ $encap_tests != 0 ] - then - echo "Note: ip6_tunnel not found neither as a module nor inside the" \ - "kernel, tests that require it (encap mode) will be omitted" - fi - fi - fi -} - -cleanup() -{ - ip link del ioam-veth-alpha 2>/dev/null || true - ip link del ioam-veth-gamma 2>/dev/null || true - - cleanup_ns $ioam_node_alpha $ioam_node_beta $ioam_node_gamma || true - - if [ $ip6tnl_loaded != 0 ] - then - modprobe -r ip6_tunnel 2>/dev/null || true - fi -} - -setup() -{ - setup_ns ioam_node_alpha ioam_node_beta ioam_node_gamma - - ip link add name ioam-veth-alpha netns $ioam_node_alpha type veth \ - peer name ioam-veth-betaL netns $ioam_node_beta - ip link add name ioam-veth-betaR netns $ioam_node_beta type veth \ - peer name ioam-veth-gamma netns $ioam_node_gamma - - ip -netns $ioam_node_alpha link set ioam-veth-alpha name veth0 - ip -netns $ioam_node_beta link set ioam-veth-betaL name veth0 - ip -netns $ioam_node_beta link set ioam-veth-betaR name veth1 - ip -netns $ioam_node_gamma link set ioam-veth-gamma name veth0 - - ip -netns $ioam_node_alpha addr add db01::2/64 dev veth0 - ip -netns $ioam_node_alpha link set veth0 up - ip -netns $ioam_node_alpha link set lo up - ip -netns $ioam_node_alpha route add db02::/64 via db01::1 dev veth0 - ip -netns $ioam_node_alpha route del db01::/64 - ip -netns $ioam_node_alpha route add db01::/64 dev veth0 - - ip -netns $ioam_node_beta addr add db01::1/64 dev veth0 - ip -netns $ioam_node_beta addr add db02::1/64 dev veth1 - ip -netns $ioam_node_beta link set veth0 up - ip -netns $ioam_node_beta link set veth1 up - ip -netns $ioam_node_beta link set lo up - - ip -netns $ioam_node_gamma addr add db02::2/64 dev veth0 - ip -netns $ioam_node_gamma link set veth0 up - ip -netns $ioam_node_gamma link set lo up - ip -netns $ioam_node_gamma route add db01::/64 via db02::1 dev veth0 - - # - IOAM config - - ip netns exec $ioam_node_alpha sysctl -wq net.ipv6.ioam6_id=${ALPHA[0]} - ip netns exec $ioam_node_alpha sysctl -wq net.ipv6.ioam6_id_wide=${ALPHA[1]} - ip netns exec $ioam_node_alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id=${ALPHA[4]} - ip netns exec $ioam_node_alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${ALPHA[5]} - ip -netns $ioam_node_alpha ioam namespace add 123 data ${ALPHA[6]} wide ${ALPHA[7]} - ip -netns $ioam_node_alpha ioam schema add ${ALPHA[8]} "${ALPHA[9]}" - ip -netns $ioam_node_alpha ioam namespace set 123 schema ${ALPHA[8]} - - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.all.forwarding=1 - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.ioam6_id=${BETA[0]} - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.ioam6_id_wide=${BETA[1]} - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1 - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_id=${BETA[2]} - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${BETA[3]} - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth1.ioam6_id=${BETA[4]} - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth1.ioam6_id_wide=${BETA[5]} - ip -netns $ioam_node_beta ioam namespace add 123 data ${BETA[6]} wide ${BETA[7]} - ip -netns $ioam_node_beta ioam schema add ${BETA[8]} "${BETA[9]}" - ip -netns $ioam_node_beta ioam namespace set 123 schema ${BETA[8]} - - ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.ioam6_id=${GAMMA[0]} - ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.ioam6_id_wide=${GAMMA[1]} - ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1 - ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id=${GAMMA[2]} - ip netns exec $ioam_node_gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${GAMMA[3]} - ip -netns $ioam_node_gamma ioam namespace add 123 data ${GAMMA[6]} wide ${GAMMA[7]} - - sleep 1 - - ip netns exec $ioam_node_alpha ping6 -c 5 -W 1 db02::2 &>/dev/null - if [ $? != 0 ] - then - echo "Setup FAILED" - cleanup &>/dev/null - exit 0 - fi -} - -log_test_passed() -{ - local desc=$1 - printf "TEST: %-60s [ OK ]\n" "${desc}" -} - -log_test_failed() -{ - local desc=$1 - printf "TEST: %-60s [FAIL]\n" "${desc}" -} - -log_results() -{ - echo "- Tests passed: ${npassed}" - echo "- Tests failed: ${nfailed}" -} - -run_test() -{ - local name=$1 - local desc=$2 - local node_src=$3 - local node_dst=$4 - local ip6_dst=$5 - local trace_type=$6 - local ioam_ns=$7 - local type=$8 - - ip netns exec $node_dst ./ioam6_parser $name $trace_type $ioam_ns $type & - local spid=$! - sleep 0.1 - - ip netns exec $node_src ping6 -t 64 -c 1 -W 1 $ip6_dst &>/dev/null - if [ $? != 0 ] - then - nfailed=$((nfailed+1)) - log_test_failed "${desc}" - kill -2 $spid &>/dev/null - else - wait $spid - if [ $? = 0 ] - then - npassed=$((npassed+1)) - log_test_passed "${desc}" - else - nfailed=$((nfailed+1)) - log_test_failed "${desc}" - fi - fi -} - -run() -{ - echo - printf "%0.s-" {1..74} - echo - echo "OUTPUT tests" - printf "%0.s-" {1..74} - echo - - # set OUTPUT settings - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=0 - - for t in $TESTS_OUTPUT - do - $t "inline" - [ $encap_tests = 0 ] && $t "encap" - done - - # clean OUTPUT settings - ip netns exec $ioam_node_beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1 - ip -netns $ioam_node_alpha route change db01::/64 dev veth0 - - - echo - printf "%0.s-" {1..74} - echo - echo "INPUT tests" - printf "%0.s-" {1..74} - echo - - # set INPUT settings - ip -netns $ioam_node_alpha ioam namespace del 123 - - for t in $TESTS_INPUT - do - $t "inline" - [ $encap_tests = 0 ] && $t "encap" - done - - # clean INPUT settings - ip -netns $ioam_node_alpha ioam namespace add 123 \ - data ${ALPHA[6]} wide ${ALPHA[7]} - ip -netns $ioam_node_alpha ioam namespace set 123 schema ${ALPHA[8]} - ip -netns $ioam_node_alpha route change db01::/64 dev veth0 - - echo - printf "%0.s-" {1..74} - echo - echo "GLOBAL tests" - printf "%0.s-" {1..74} - echo - - for t in $TESTS_GLOBAL - do - $t "inline" - [ $encap_tests = 0 ] && $t "encap" - done - - echo - log_results -} - -bit2type=( - 0x800000 0x400000 0x200000 0x100000 0x080000 0x040000 0x020000 0x010000 - 0x008000 0x004000 0x002000 0x001000 0x000800 0x000400 0x000200 0x000100 - 0x000080 0x000040 0x000020 0x000010 0x000008 0x000004 0x000002 -) -bit2size=( 4 4 4 4 4 4 4 4 8 8 8 4 4 4 4 4 4 4 4 4 4 4 4 ) - - -################################################################################ -# # -# OUTPUT tests # -# # -# Two nodes (sender/receiver), IOAM disabled on ingress for the receiver. # -################################################################################ - -out_undef_ns() -{ - ############################################################################## - # Make sure that the encap node won't fill the trace if the chosen IOAM # - # namespace is not configured locally. # - ############################################################################## - local desc="Unknown IOAM namespace" - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type 0x800000 ns 0 size 4 dev veth0 - - run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \ - db01::1 0x800000 0 $1 - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down -} - -out_no_room() -{ - ############################################################################## - # Make sure that the encap node won't fill the trace and will set the # - # Overflow flag since there is no room enough for its data. # - ############################################################################## - local desc="Missing trace room" - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type 0xc00000 ns 123 size 4 dev veth0 - - run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \ - db01::1 0xc00000 123 $1 - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down -} - -out_bits() -{ - ############################################################################## - # Make sure that, for each trace type bit, the encap node will either: # - # (i) fill the trace with its data when it is a supported bit # - # (ii) not fill the trace with its data when it is an unsupported bit # - ############################################################################## - local desc="Trace type with bit only" - - local tmp=${bit2size[22]} - bit2size[22]=$(( $tmp + ${#ALPHA[9]} + ((4 - (${#ALPHA[9]} % 4)) % 4) )) - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - for i in {0..22} - do - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} \ - dev veth0 &>/dev/null - - local cmd_res=$? - local descr="${desc//$i}" - - if [[ $i -ge 12 && $i -le 21 ]] - then - if [ $cmd_res != 0 ] - then - npassed=$((npassed+1)) - log_test_passed "$descr ($1 mode)" - else - nfailed=$((nfailed+1)) - log_test_failed "$descr ($1 mode)" - fi - else - run_test "out_bit$i" "$descr ($1 mode)" $ioam_node_alpha \ - $ioam_node_beta db01::1 ${bit2type[$i]} 123 $1 - fi - done - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down - - bit2size[22]=$tmp -} - -out_full_supp_trace() -{ - ############################################################################## - # Make sure that the encap node will correctly fill a full trace. Be careful,# - # "full trace" here does NOT mean all bits (only supported ones). # - ############################################################################## - local desc="Full supported trace" - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type 0xfff002 ns 123 size 100 dev veth0 - - run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \ - db01::1 0xfff002 123 $1 - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down -} - - -################################################################################ -# # -# INPUT tests # -# # -# Two nodes (sender/receiver), the sender MUST NOT fill the trace upon # -# insertion -> the IOAM namespace configured on the sender is removed # -# and is used in the inserted trace to force the sender not to fill it. # -################################################################################ - -in_undef_ns() -{ - ############################################################################## - # Make sure that the receiving node won't fill the trace if the related IOAM # - # namespace is not configured locally. # - ############################################################################## - local desc="Unknown IOAM namespace" - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type 0x800000 ns 0 size 4 dev veth0 - - run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \ - db01::1 0x800000 0 $1 - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down -} - -in_no_room() -{ - ############################################################################## - # Make sure that the receiving node won't fill the trace and will set the # - # Overflow flag if there is no room enough for its data. # - ############################################################################## - local desc="Missing trace room" - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type 0xc00000 ns 123 size 4 dev veth0 - - run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \ - db01::1 0xc00000 123 $1 - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down -} - -in_bits() -{ - ############################################################################## - # Make sure that, for each trace type bit, the receiving node will either: # - # (i) fill the trace with its data when it is a supported bit # - # (ii) not fill the trace with its data when it is an unsupported bit # - ############################################################################## - local desc="Trace type with bit only" - - local tmp=${bit2size[22]} - bit2size[22]=$(( $tmp + ${#BETA[9]} + ((4 - (${#BETA[9]} % 4)) % 4) )) - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - for i in {0..11} {22..22} - do - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} \ - dev veth0 - - run_test "in_bit$i" "${desc//$i} ($1 mode)" $ioam_node_alpha \ - $ioam_node_beta db01::1 ${bit2type[$i]} 123 $1 - done - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down - - bit2size[22]=$tmp -} - -in_oflag() -{ - ############################################################################## - # Make sure that the receiving node won't fill the trace since the Overflow # - # flag is set. # - ############################################################################## - local desc="Overflow flag is set" - - # Exception: - # Here, we need the sender to set the Overflow flag. For that, we will add - # back the IOAM namespace that was previously configured on the sender. - ip -netns $ioam_node_alpha ioam namespace add 123 - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type 0xc00000 ns 123 size 4 dev veth0 - - run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \ - db01::1 0xc00000 123 $1 - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down - - # And we clean the exception for this test to get things back to normal for - # other INPUT tests - ip -netns $ioam_node_alpha ioam namespace del 123 -} - -in_full_supp_trace() -{ - ############################################################################## - # Make sure that the receiving node will correctly fill a full trace. Be # - # careful, "full trace" here does NOT mean all bits (only supported ones). # - ############################################################################## - local desc="Full supported trace" - - [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 up - - ip -netns $ioam_node_alpha route change db01::/64 encap ioam6 mode $mode \ - trace prealloc type 0xfff002 ns 123 size 80 dev veth0 - - run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_beta \ - db01::1 0xfff002 123 $1 - - [ "$1" = "encap" ] && ip -netns $ioam_node_beta link set ip6tnl0 down -} - - -################################################################################ -# # -# GLOBAL tests # -# # -# Three nodes (sender/router/receiver), IOAM fully enabled on every node. # -################################################################################ - -fwd_full_supp_trace() -{ - ############################################################################## - # Make sure that all three nodes correctly filled the full supported trace # - # by checking that the trace data is consistent with the predefined config. # - ############################################################################## - local desc="Forward - Full supported trace" - - [ "$1" = "encap" ] && mode="$1 tundst db02::2" || mode="$1" - [ "$1" = "encap" ] && ip -netns $ioam_node_gamma link set ip6tnl0 up - - ip -netns $ioam_node_alpha route change db02::/64 encap ioam6 mode $mode \ - trace prealloc type 0xfff002 ns 123 size 244 via db01::1 dev veth0 - - run_test ${FUNCNAME[0]} "${desc} ($1 mode)" $ioam_node_alpha $ioam_node_gamma \ - db02::2 0xfff002 123 $1 - - [ "$1" = "encap" ] && ip -netns $ioam_node_gamma link set ip6tnl0 down -} - - -################################################################################ -# # -# MAIN # -# # -################################################################################ - -npassed=0 -nfailed=0 - -if [ "$(id -u)" -ne 0 ] -then - echo "SKIP: Need root privileges" - exit $ksft_skip -fi - -if [ ! -x "$(command -v ip)" ] -then - echo "SKIP: Could not run test without ip tool" - exit $ksft_skip -fi - -ip ioam &>/dev/null -if [ $? = 1 ] -then - echo "SKIP: iproute2 too old, missing ioam command" - exit $ksft_skip -fi - -check_kernel_compatibility - -cleanup &>/dev/null -setup -run -cleanup &>/dev/null diff --git a/tools/testing/selftests/net/ioam6_parser.c b/tools/testing/selftests/net/ioam6_parser.c deleted file mode 100644 index 895e5bb5044b..000000000000 --- a/tools/testing/selftests/net/ioam6_parser.c +++ /dev/null @@ -1,674 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Author: Justin Iurman (justin.iurman@uliege.be) - * - * IOAM tester for IPv6, see ioam6.sh for details on each test case. - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include - -struct ioam_config { - __u32 id; - __u64 wide; - __u16 ingr_id; - __u16 egr_id; - __u32 ingr_wide; - __u32 egr_wide; - __u32 ns_data; - __u64 ns_wide; - __u32 sc_id; - __u8 hlim; - char *sc_data; -}; - -/* - * Be careful if you modify structs below - everything MUST be kept synchronized - * with configurations inside ioam6.sh and always reflect the same. - */ - -static struct ioam_config node1 = { - .id = 1, - .wide = 11111111, - .ingr_id = 0xffff, /* default value */ - .egr_id = 101, - .ingr_wide = 0xffffffff, /* default value */ - .egr_wide = 101101, - .ns_data = 0xdeadbee0, - .ns_wide = 0xcafec0caf00dc0de, - .sc_id = 777, - .sc_data = "something that will be 4n-aligned", - .hlim = 64, -}; - -static struct ioam_config node2 = { - .id = 2, - .wide = 22222222, - .ingr_id = 201, - .egr_id = 202, - .ingr_wide = 201201, - .egr_wide = 202202, - .ns_data = 0xdeadbee1, - .ns_wide = 0xcafec0caf11dc0de, - .sc_id = 666, - .sc_data = "Hello there -Obi", - .hlim = 63, -}; - -static struct ioam_config node3 = { - .id = 3, - .wide = 33333333, - .ingr_id = 301, - .egr_id = 0xffff, /* default value */ - .ingr_wide = 301301, - .egr_wide = 0xffffffff, /* default value */ - .ns_data = 0xdeadbee2, - .ns_wide = 0xcafec0caf22dc0de, - .sc_id = 0xffffff, /* default value */ - .sc_data = NULL, - .hlim = 62, -}; - -enum { - /********** - * OUTPUT * - **********/ - TEST_OUT_UNDEF_NS, - TEST_OUT_NO_ROOM, - TEST_OUT_BIT0, - TEST_OUT_BIT1, - TEST_OUT_BIT2, - TEST_OUT_BIT3, - TEST_OUT_BIT4, - TEST_OUT_BIT5, - TEST_OUT_BIT6, - TEST_OUT_BIT7, - TEST_OUT_BIT8, - TEST_OUT_BIT9, - TEST_OUT_BIT10, - TEST_OUT_BIT11, - TEST_OUT_BIT22, - TEST_OUT_FULL_SUPP_TRACE, - - /********* - * INPUT * - *********/ - TEST_IN_UNDEF_NS, - TEST_IN_NO_ROOM, - TEST_IN_OFLAG, - TEST_IN_BIT0, - TEST_IN_BIT1, - TEST_IN_BIT2, - TEST_IN_BIT3, - TEST_IN_BIT4, - TEST_IN_BIT5, - TEST_IN_BIT6, - TEST_IN_BIT7, - TEST_IN_BIT8, - TEST_IN_BIT9, - TEST_IN_BIT10, - TEST_IN_BIT11, - TEST_IN_BIT22, - TEST_IN_FULL_SUPP_TRACE, - - /********** - * GLOBAL * - **********/ - TEST_FWD_FULL_SUPP_TRACE, - - __TEST_MAX, -}; - -static int check_ioam_header(int tid, struct ioam6_trace_hdr *ioam6h, - __u32 trace_type, __u16 ioam_ns) -{ - if (__be16_to_cpu(ioam6h->namespace_id) != ioam_ns || - __be32_to_cpu(ioam6h->type_be32) != (trace_type << 8)) - return 1; - - switch (tid) { - case TEST_OUT_UNDEF_NS: - case TEST_IN_UNDEF_NS: - return ioam6h->overflow || - ioam6h->nodelen != 1 || - ioam6h->remlen != 1; - - case TEST_OUT_NO_ROOM: - case TEST_IN_NO_ROOM: - case TEST_IN_OFLAG: - return !ioam6h->overflow || - ioam6h->nodelen != 2 || - ioam6h->remlen != 1; - - case TEST_OUT_BIT0: - case TEST_IN_BIT0: - case TEST_OUT_BIT1: - case TEST_IN_BIT1: - case TEST_OUT_BIT2: - case TEST_IN_BIT2: - case TEST_OUT_BIT3: - case TEST_IN_BIT3: - case TEST_OUT_BIT4: - case TEST_IN_BIT4: - case TEST_OUT_BIT5: - case TEST_IN_BIT5: - case TEST_OUT_BIT6: - case TEST_IN_BIT6: - case TEST_OUT_BIT7: - case TEST_IN_BIT7: - case TEST_OUT_BIT11: - case TEST_IN_BIT11: - return ioam6h->overflow || - ioam6h->nodelen != 1 || - ioam6h->remlen; - - case TEST_OUT_BIT8: - case TEST_IN_BIT8: - case TEST_OUT_BIT9: - case TEST_IN_BIT9: - case TEST_OUT_BIT10: - case TEST_IN_BIT10: - return ioam6h->overflow || - ioam6h->nodelen != 2 || - ioam6h->remlen; - - case TEST_OUT_BIT22: - case TEST_IN_BIT22: - return ioam6h->overflow || - ioam6h->nodelen || - ioam6h->remlen; - - case TEST_OUT_FULL_SUPP_TRACE: - case TEST_IN_FULL_SUPP_TRACE: - case TEST_FWD_FULL_SUPP_TRACE: - return ioam6h->overflow || - ioam6h->nodelen != 15 || - ioam6h->remlen; - - default: - break; - } - - return 1; -} - -static int check_ioam6_data(__u8 **p, struct ioam6_trace_hdr *ioam6h, - const struct ioam_config cnf) -{ - unsigned int len; - __u8 aligned; - __u64 raw64; - __u32 raw32; - - if (ioam6h->type.bit0) { - raw32 = __be32_to_cpu(*((__u32 *)*p)); - if (cnf.hlim != (raw32 >> 24) || cnf.id != (raw32 & 0xffffff)) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit1) { - raw32 = __be32_to_cpu(*((__u32 *)*p)); - if (cnf.ingr_id != (raw32 >> 16) || - cnf.egr_id != (raw32 & 0xffff)) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit2) - *p += sizeof(__u32); - - if (ioam6h->type.bit3) - *p += sizeof(__u32); - - if (ioam6h->type.bit4) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit5) { - if (__be32_to_cpu(*((__u32 *)*p)) != cnf.ns_data) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit6) - *p += sizeof(__u32); - - if (ioam6h->type.bit7) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit8) { - raw64 = __be64_to_cpu(*((__u64 *)*p)); - if (cnf.hlim != (raw64 >> 56) || - cnf.wide != (raw64 & 0xffffffffffffff)) - return 1; - *p += sizeof(__u64); - } - - if (ioam6h->type.bit9) { - if (__be32_to_cpu(*((__u32 *)*p)) != cnf.ingr_wide) - return 1; - *p += sizeof(__u32); - - if (__be32_to_cpu(*((__u32 *)*p)) != cnf.egr_wide) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit10) { - if (__be64_to_cpu(*((__u64 *)*p)) != cnf.ns_wide) - return 1; - *p += sizeof(__u64); - } - - if (ioam6h->type.bit11) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit12) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit13) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit14) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit15) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit16) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit17) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit18) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit19) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit20) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit21) { - if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff) - return 1; - *p += sizeof(__u32); - } - - if (ioam6h->type.bit22) { - len = cnf.sc_data ? strlen(cnf.sc_data) : 0; - aligned = cnf.sc_data ? __ALIGN_KERNEL(len, 4) : 0; - - raw32 = __be32_to_cpu(*((__u32 *)*p)); - if (aligned != (raw32 >> 24) * 4 || - cnf.sc_id != (raw32 & 0xffffff)) - return 1; - *p += sizeof(__u32); - - if (cnf.sc_data) { - if (strncmp((char *)*p, cnf.sc_data, len)) - return 1; - - *p += len; - aligned -= len; - - while (aligned--) { - if (**p != '\0') - return 1; - *p += sizeof(__u8); - } - } - } - - return 0; -} - -static int check_ioam_header_and_data(int tid, struct ioam6_trace_hdr *ioam6h, - __u32 trace_type, __u16 ioam_ns) -{ - __u8 *p; - - if (check_ioam_header(tid, ioam6h, trace_type, ioam_ns)) - return 1; - - p = ioam6h->data + ioam6h->remlen * 4; - - switch (tid) { - case TEST_OUT_BIT0: - case TEST_OUT_BIT1: - case TEST_OUT_BIT2: - case TEST_OUT_BIT3: - case TEST_OUT_BIT4: - case TEST_OUT_BIT5: - case TEST_OUT_BIT6: - case TEST_OUT_BIT7: - case TEST_OUT_BIT8: - case TEST_OUT_BIT9: - case TEST_OUT_BIT10: - case TEST_OUT_BIT11: - case TEST_OUT_BIT22: - case TEST_OUT_FULL_SUPP_TRACE: - return check_ioam6_data(&p, ioam6h, node1); - - case TEST_IN_BIT0: - case TEST_IN_BIT1: - case TEST_IN_BIT2: - case TEST_IN_BIT3: - case TEST_IN_BIT4: - case TEST_IN_BIT5: - case TEST_IN_BIT6: - case TEST_IN_BIT7: - case TEST_IN_BIT8: - case TEST_IN_BIT9: - case TEST_IN_BIT10: - case TEST_IN_BIT11: - case TEST_IN_BIT22: - case TEST_IN_FULL_SUPP_TRACE: - { - __u32 tmp32 = node2.egr_wide; - __u16 tmp16 = node2.egr_id; - int res; - - node2.egr_id = 0xffff; - node2.egr_wide = 0xffffffff; - - res = check_ioam6_data(&p, ioam6h, node2); - - node2.egr_id = tmp16; - node2.egr_wide = tmp32; - - return res; - } - - case TEST_FWD_FULL_SUPP_TRACE: - if (check_ioam6_data(&p, ioam6h, node3)) - return 1; - if (check_ioam6_data(&p, ioam6h, node2)) - return 1; - return check_ioam6_data(&p, ioam6h, node1); - - default: - break; - } - - return 1; -} - -static int str2id(const char *tname) -{ - if (!strcmp("out_undef_ns", tname)) - return TEST_OUT_UNDEF_NS; - if (!strcmp("out_no_room", tname)) - return TEST_OUT_NO_ROOM; - if (!strcmp("out_bit0", tname)) - return TEST_OUT_BIT0; - if (!strcmp("out_bit1", tname)) - return TEST_OUT_BIT1; - if (!strcmp("out_bit2", tname)) - return TEST_OUT_BIT2; - if (!strcmp("out_bit3", tname)) - return TEST_OUT_BIT3; - if (!strcmp("out_bit4", tname)) - return TEST_OUT_BIT4; - if (!strcmp("out_bit5", tname)) - return TEST_OUT_BIT5; - if (!strcmp("out_bit6", tname)) - return TEST_OUT_BIT6; - if (!strcmp("out_bit7", tname)) - return TEST_OUT_BIT7; - if (!strcmp("out_bit8", tname)) - return TEST_OUT_BIT8; - if (!strcmp("out_bit9", tname)) - return TEST_OUT_BIT9; - if (!strcmp("out_bit10", tname)) - return TEST_OUT_BIT10; - if (!strcmp("out_bit11", tname)) - return TEST_OUT_BIT11; - if (!strcmp("out_bit22", tname)) - return TEST_OUT_BIT22; - if (!strcmp("out_full_supp_trace", tname)) - return TEST_OUT_FULL_SUPP_TRACE; - if (!strcmp("in_undef_ns", tname)) - return TEST_IN_UNDEF_NS; - if (!strcmp("in_no_room", tname)) - return TEST_IN_NO_ROOM; - if (!strcmp("in_oflag", tname)) - return TEST_IN_OFLAG; - if (!strcmp("in_bit0", tname)) - return TEST_IN_BIT0; - if (!strcmp("in_bit1", tname)) - return TEST_IN_BIT1; - if (!strcmp("in_bit2", tname)) - return TEST_IN_BIT2; - if (!strcmp("in_bit3", tname)) - return TEST_IN_BIT3; - if (!strcmp("in_bit4", tname)) - return TEST_IN_BIT4; - if (!strcmp("in_bit5", tname)) - return TEST_IN_BIT5; - if (!strcmp("in_bit6", tname)) - return TEST_IN_BIT6; - if (!strcmp("in_bit7", tname)) - return TEST_IN_BIT7; - if (!strcmp("in_bit8", tname)) - return TEST_IN_BIT8; - if (!strcmp("in_bit9", tname)) - return TEST_IN_BIT9; - if (!strcmp("in_bit10", tname)) - return TEST_IN_BIT10; - if (!strcmp("in_bit11", tname)) - return TEST_IN_BIT11; - if (!strcmp("in_bit22", tname)) - return TEST_IN_BIT22; - if (!strcmp("in_full_supp_trace", tname)) - return TEST_IN_FULL_SUPP_TRACE; - if (!strcmp("fwd_full_supp_trace", tname)) - return TEST_FWD_FULL_SUPP_TRACE; - - return -1; -} - -static int get_u32(__u32 *val, const char *arg, int base) -{ - unsigned long res; - char *ptr; - - if (!arg || !*arg) - return -1; - res = strtoul(arg, &ptr, base); - - if (!ptr || ptr == arg || *ptr) - return -1; - - if (res == ULONG_MAX && errno == ERANGE) - return -1; - - if (res > 0xFFFFFFFFUL) - return -1; - - *val = res; - return 0; -} - -static int get_u16(__u16 *val, const char *arg, int base) -{ - unsigned long res; - char *ptr; - - if (!arg || !*arg) - return -1; - res = strtoul(arg, &ptr, base); - - if (!ptr || ptr == arg || *ptr) - return -1; - - if (res == ULONG_MAX && errno == ERANGE) - return -1; - - if (res > 0xFFFFUL) - return -1; - - *val = res; - return 0; -} - -static int (*func[__TEST_MAX])(int, struct ioam6_trace_hdr *, __u32, __u16) = { - [TEST_OUT_UNDEF_NS] = check_ioam_header, - [TEST_OUT_NO_ROOM] = check_ioam_header, - [TEST_OUT_BIT0] = check_ioam_header_and_data, - [TEST_OUT_BIT1] = check_ioam_header_and_data, - [TEST_OUT_BIT2] = check_ioam_header_and_data, - [TEST_OUT_BIT3] = check_ioam_header_and_data, - [TEST_OUT_BIT4] = check_ioam_header_and_data, - [TEST_OUT_BIT5] = check_ioam_header_and_data, - [TEST_OUT_BIT6] = check_ioam_header_and_data, - [TEST_OUT_BIT7] = check_ioam_header_and_data, - [TEST_OUT_BIT8] = check_ioam_header_and_data, - [TEST_OUT_BIT9] = check_ioam_header_and_data, - [TEST_OUT_BIT10] = check_ioam_header_and_data, - [TEST_OUT_BIT11] = check_ioam_header_and_data, - [TEST_OUT_BIT22] = check_ioam_header_and_data, - [TEST_OUT_FULL_SUPP_TRACE] = check_ioam_header_and_data, - [TEST_IN_UNDEF_NS] = check_ioam_header, - [TEST_IN_NO_ROOM] = check_ioam_header, - [TEST_IN_OFLAG] = check_ioam_header, - [TEST_IN_BIT0] = check_ioam_header_and_data, - [TEST_IN_BIT1] = check_ioam_header_and_data, - [TEST_IN_BIT2] = check_ioam_header_and_data, - [TEST_IN_BIT3] = check_ioam_header_and_data, - [TEST_IN_BIT4] = check_ioam_header_and_data, - [TEST_IN_BIT5] = check_ioam_header_and_data, - [TEST_IN_BIT6] = check_ioam_header_and_data, - [TEST_IN_BIT7] = check_ioam_header_and_data, - [TEST_IN_BIT8] = check_ioam_header_and_data, - [TEST_IN_BIT9] = check_ioam_header_and_data, - [TEST_IN_BIT10] = check_ioam_header_and_data, - [TEST_IN_BIT11] = check_ioam_header_and_data, - [TEST_IN_BIT22] = check_ioam_header_and_data, - [TEST_IN_FULL_SUPP_TRACE] = check_ioam_header_and_data, - [TEST_FWD_FULL_SUPP_TRACE] = check_ioam_header_and_data, -}; - -int main(int argc, char **argv) -{ - int fd, size, hoplen, tid, ret = 1, on = 1; - struct ioam6_hdr *opt; - struct cmsghdr *cmsg; - struct msghdr msg; - struct iovec iov; - __u8 buffer[512]; - __u32 tr_type; - __u16 ioam_ns; - __u8 *ptr; - - if (argc != 5) - goto out; - - tid = str2id(argv[1]); - if (tid < 0 || !func[tid]) - goto out; - - if (get_u32(&tr_type, argv[2], 16) || - get_u16(&ioam_ns, argv[3], 0)) - goto out; - - fd = socket(PF_INET6, SOCK_RAW, - !strcmp(argv[4], "encap") ? IPPROTO_IPV6 : IPPROTO_ICMPV6); - if (fd < 0) - goto out; - - setsockopt(fd, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &on, sizeof(on)); - - iov.iov_len = 1; - iov.iov_base = malloc(CMSG_SPACE(sizeof(buffer))); - if (!iov.iov_base) - goto close; -recv: - memset(&msg, 0, sizeof(msg)); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = buffer; - msg.msg_controllen = CMSG_SPACE(sizeof(buffer)); - - size = recvmsg(fd, &msg, 0); - if (size <= 0) - goto close; - - for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { - if (cmsg->cmsg_level != IPPROTO_IPV6 || - cmsg->cmsg_type != IPV6_HOPOPTS || - cmsg->cmsg_len < sizeof(struct ipv6_hopopt_hdr)) - continue; - - ptr = (__u8 *)CMSG_DATA(cmsg); - - hoplen = (ptr[1] + 1) << 3; - ptr += sizeof(struct ipv6_hopopt_hdr); - - while (hoplen > 0) { - opt = (struct ioam6_hdr *)ptr; - - if (opt->opt_type == IPV6_TLV_IOAM && - opt->type == IOAM6_TYPE_PREALLOC) { - ptr += sizeof(*opt); - ret = func[tid](tid, - (struct ioam6_trace_hdr *)ptr, - tr_type, ioam_ns); - goto close; - } - - ptr += opt->opt_len + 2; - hoplen -= opt->opt_len + 2; - } - } - - goto recv; -close: - free(iov.iov_base); - close(fd); -out: - return ret; -} -- cgit v1.2.3 From 2d2b5028b4abfb312c3fe964ce724ad8873ac574 Mon Sep 17 00:00:00 2001 From: Justin Iurman Date: Wed, 2 Oct 2024 18:27:31 +0200 Subject: selftests: net: add new ioam tests This patch re-adds the (updated) ioam selftests with support for the tunsrc feature. Signed-off-by: Justin Iurman Link: https://patch.msgid.link/20241002162731.19847-3-justin.iurman@uliege.be Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/Makefile | 2 + tools/testing/selftests/net/config | 1 + tools/testing/selftests/net/ioam6.sh | 1683 ++++++++++++++++++++++++++++ tools/testing/selftests/net/ioam6_parser.c | 1101 ++++++++++++++++++ 4 files changed, 2787 insertions(+) create mode 100755 tools/testing/selftests/net/ioam6.sh create mode 100644 tools/testing/selftests/net/ioam6_parser.c (limited to 'tools') diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index ef40d099aa1c..649f1fe0dc46 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -28,6 +28,7 @@ TEST_PROGS += unicast_extensions.sh TEST_PROGS += udpgro_fwd.sh TEST_PROGS += udpgro_frglist.sh TEST_PROGS += veth.sh +TEST_PROGS += ioam6.sh TEST_PROGS += gro.sh TEST_PROGS += gre_gso.sh TEST_PROGS += cmsg_so_mark.sh @@ -66,6 +67,7 @@ TEST_GEN_FILES += fin_ack_lat TEST_GEN_FILES += reuseaddr_ports_exhausted TEST_GEN_FILES += hwtstamp_config rxtimestamp timestamping txtimestamp TEST_GEN_FILES += ipsec +TEST_GEN_FILES += ioam6_parser TEST_GEN_FILES += gro TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict tls tun tap epoll_busy_poll diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index 3f0b02835e78..5b9baf708950 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -95,6 +95,7 @@ CONFIG_NET_CLS_FLOWER=m CONFIG_NET_ACT_TUNNEL_KEY=m CONFIG_NET_ACT_MIRRED=m CONFIG_BAREUDP=m +CONFIG_IPV6_IOAM6_LWTUNNEL=y CONFIG_CRYPTO_SM4_GENERIC=y CONFIG_AMT=m CONFIG_TUN=y diff --git a/tools/testing/selftests/net/ioam6.sh b/tools/testing/selftests/net/ioam6.sh new file mode 100755 index 000000000000..845c26dd01a9 --- /dev/null +++ b/tools/testing/selftests/net/ioam6.sh @@ -0,0 +1,1683 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0+ +# +# Author: Justin Iurman +# +# This script evaluates IOAM for IPv6 by checking local IOAM configurations and +# IOAM data inside packets. There are three categories of tests: LOCAL, OUTPUT, +# and INPUT. The former (LOCAL) checks all IOAM related configurations locally +# without sending packets. OUTPUT tests verify the processing of an IOAM +# encapsulating node, while INPUT tests verify the processing of an IOAM transit +# node. Both OUTPUT and INPUT tests send packets. Each test is documented inside +# its own handler. +# +# The topology used for OUTPUT and INPUT tests is made of three nodes: +# - Alpha (the IOAM encapsulating node) +# - Beta (the IOAM transit node) +# - Gamma (the receiver) ** +# +# An IOAM domain is configured from Alpha to Beta, but not on the reverse path. +# Alpha adds an IOAM option (Pre-allocated Trace) inside a Hop-by-hop. +# +# ** Gamma is required because ioam6_parser.c uses a packet socket and we need +# to see IOAM data inserted by the very last node (Beta), which would happen +# _after_ we get a copy of the packet on Beta. Note that using an +# IPv6 raw socket with IPV6_RECVHOPOPTS on Beta would not be enough: we also +# need to access the IPv6 header to check some fields (e.g., source and +# destination addresses), which is not possible in that case. As a +# consequence, we need Gamma as a receiver to run ioam6_parser.c which uses a +# packet socket. +# +# +# +-----------------------+ +-----------------------+ +# | | | | +# | Alpha netns | | Gamma netns | +# | | | | +# | +-------------------+ | | +-------------------+ | +# | | veth0 | | | | veth0 | | +# | | 2001:db8:1::2/64 | | | | 2001:db8:2::2/64 | | +# | +-------------------+ | | +-------------------+ | +# | . | | . | +# +-----------.-----------+ +-----------.-----------+ +# . . +# . . +# . . +# +-----------.----------------------------------.-----------+ +# | . . | +# | +-------------------+ +-------------------+ | +# | | veth0 | | veth1 | | +# | | 2001:db8:1::1/64 | ............ | 2001:db8:2::1/64 | | +# | +-------------------+ +-------------------+ | +# | | +# | Beta netns | +# | | +# +----------------------------------------------------------+ +# +# +# +# +==========================================================+ +# | Alpha - IOAM configuration | +# +=====================+====================================+ +# | Node ID | 1 | +# +---------------------+------------------------------------+ +# | Node Wide ID | 11111111 | +# +---------------------+------------------------------------+ +# | Ingress ID | 0xffff (default value) | +# +---------------------+------------------------------------+ +# | Ingress Wide ID | 0xffffffff (default value) | +# +---------------------+------------------------------------+ +# | Egress ID | 101 | +# +---------------------+------------------------------------+ +# | Egress Wide ID | 101101 | +# +---------------------+------------------------------------+ +# | Namespace Data | 0xdeadbeef | +# +---------------------+------------------------------------+ +# | Namespace Wide Data | 0xcafec0caf00dc0de | +# +---------------------+------------------------------------+ +# | Schema ID | 777 | +# +---------------------+------------------------------------+ +# | Schema Data | something that will be 4n-aligned | +# +---------------------+------------------------------------+ +# +# +# +==========================================================+ +# | Beta - IOAM configuration | +# +=====================+====================================+ +# | Node ID | 2 | +# +---------------------+------------------------------------+ +# | Node Wide ID | 22222222 | +# +---------------------+------------------------------------+ +# | Ingress ID | 201 | +# +---------------------+------------------------------------+ +# | Ingress Wide ID | 201201 | +# +---------------------+------------------------------------+ +# | Egress ID | 202 | +# +---------------------+------------------------------------+ +# | Egress Wide ID | 202202 | +# +---------------------+------------------------------------+ +# | Namespace Data | 0xffffffff (default value) | +# +---------------------+------------------------------------+ +# | Namespace Wide Data | 0xffffffffffffffff (default value) | +# +---------------------+------------------------------------+ +# | Schema ID | 0xffffff (= None) | +# +---------------------+------------------------------------+ +# | Schema Data | | +# +---------------------+------------------------------------+ + +source lib.sh + +################################################################################ +# # +# WARNING: Be careful if you modify the block below - it MUST be kept # +# synchronized with configurations inside ioam6_parser.c and always # +# reflect the same. # +# # +################################################################################ + +ALPHA=( + 1 # ID + 11111111 # Wide ID + 0xffff # Ingress ID (default value) + 0xffffffff # Ingress Wide ID (default value) + 101 # Egress ID + 101101 # Egress Wide ID + 0xdeadbeef # Namespace Data + 0xcafec0caf00dc0de # Namespace Wide Data + 777 # Schema ID + "something that will be 4n-aligned" # Schema Data +) + +BETA=( + 2 # ID + 22222222 # Wide ID + 201 # Ingress ID + 201201 # Ingress Wide ID + 202 # Egress ID + 202202 # Egress Wide ID + 0xffffffff # Namespace Data (empty value) + 0xffffffffffffffff # Namespace Wide Data (empty value) + 0xffffff # Schema ID (empty value) + "" # Schema Data (empty value) +) + +TESTS_LOCAL=" + local_sysctl_ioam_id + local_sysctl_ioam_id_wide + local_sysctl_ioam_intf_id + local_sysctl_ioam_intf_id_wide + local_sysctl_ioam_intf_enabled + local_ioam_namespace + local_ioam_schema + local_ioam_schema_namespace + local_route_ns + local_route_tunsrc + local_route_tundst + local_route_trace_type + local_route_trace_size + local_route_trace_type_bits + local_route_trace_size_values +" + +TESTS_OUTPUT=" + output_undef_ns + output_no_room + output_no_room_oss + output_bits + output_sizes + output_full_supp_trace +" + +TESTS_INPUT=" + input_undef_ns + input_no_room + input_no_room_oss + input_disabled + input_oflag + input_bits + input_sizes + input_full_supp_trace +" + +################################################################################ +# # +# LIBRARY # +# # +################################################################################ + +check_kernel_compatibility() +{ + setup_ns ioam_tmp_node &>/dev/null + local ret=$? + + ip link add name veth0 netns $ioam_tmp_node type veth \ + peer name veth1 netns $ioam_tmp_node &>/dev/null + ret=$((ret + $?)) + + ip -netns $ioam_tmp_node link set veth0 up &>/dev/null + ret=$((ret + $?)) + + ip -netns $ioam_tmp_node link set veth1 up &>/dev/null + ret=$((ret + $?)) + + if [ $ret != 0 ] + then + echo "SKIP: Setup failed." + cleanup_ns $ioam_tmp_node + exit $ksft_skip + fi + + ip -netns $ioam_tmp_node route add 2001:db8:2::/64 \ + encap ioam6 trace prealloc type 0x800000 ns 0 size 4 dev veth0 &>/dev/null + ret=$? + + ip -netns $ioam_tmp_node -6 route 2>/dev/null | grep -q "encap ioam6" + ret=$((ret + $?)) + + if [ $ret != 0 ] + then + echo "SKIP: Cannot attach an IOAM trace to a route. Was your kernel" \ + "compiled without CONFIG_IPV6_IOAM6_LWTUNNEL? Are you running an" \ + "old kernel? Are you using an old version of iproute2?" + cleanup_ns $ioam_tmp_node + exit $ksft_skip + fi + + cleanup_ns $ioam_tmp_node + + lsmod 2>/dev/null | grep -q "ip6_tunnel" + ip6tnl_loaded=$? + + if [ $ip6tnl_loaded == 0 ] + then + encap_tests=0 + else + modprobe ip6_tunnel &>/dev/null + lsmod 2>/dev/null | grep -q "ip6_tunnel" + encap_tests=$? + + if [ $encap_tests != 0 ] + then + ip a 2>/dev/null | grep -q "ip6tnl0" + encap_tests=$? + + if [ $encap_tests != 0 ] + then + echo "Note: ip6_tunnel not found neither as a module nor inside the" \ + "kernel. Any tests that require it will be skipped." + fi + fi + fi +} + +cleanup() +{ + cleanup_ns $ioam_node_alpha $ioam_node_beta $ioam_node_gamma + + if [ $ip6tnl_loaded != 0 ] + then + modprobe -r ip6_tunnel &>/dev/null + fi +} + +setup() +{ + setup_ns ioam_node_alpha ioam_node_beta ioam_node_gamma &>/dev/null + + ip link add name ioam-veth-alpha netns $ioam_node_alpha type veth \ + peer name ioam-veth-betaL netns $ioam_node_beta &>/dev/null + ip link add name ioam-veth-betaR netns $ioam_node_beta type veth \ + peer name ioam-veth-gamma netns $ioam_node_gamma &>/dev/null + + ip -netns $ioam_node_alpha link set ioam-veth-alpha name veth0 &>/dev/null + ip -netns $ioam_node_beta link set ioam-veth-betaL name veth0 &>/dev/null + ip -netns $ioam_node_beta link set ioam-veth-betaR name veth1 &>/dev/null + ip -netns $ioam_node_gamma link set ioam-veth-gamma name veth0 &>/dev/null + + ip -netns $ioam_node_alpha addr add 2001:db8:1::50/64 dev veth0 &>/dev/null + ip -netns $ioam_node_alpha addr add 2001:db8:1::2/64 dev veth0 &>/dev/null + ip -netns $ioam_node_alpha link set veth0 up &>/dev/null + ip -netns $ioam_node_alpha link set lo up &>/dev/null + ip -netns $ioam_node_alpha route add 2001:db8:2::/64 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + ip -netns $ioam_node_beta addr add 2001:db8:1::1/64 dev veth0 &>/dev/null + ip -netns $ioam_node_beta addr add 2001:db8:2::1/64 dev veth1 &>/dev/null + ip -netns $ioam_node_beta link set veth0 up &>/dev/null + ip -netns $ioam_node_beta link set veth1 up &>/dev/null + ip -netns $ioam_node_beta link set lo up &>/dev/null + + ip -netns $ioam_node_gamma addr add 2001:db8:2::2/64 dev veth0 &>/dev/null + ip -netns $ioam_node_gamma link set veth0 up &>/dev/null + ip -netns $ioam_node_gamma link set lo up &>/dev/null + ip -netns $ioam_node_gamma route add 2001:db8:1::/64 \ + via 2001:db8:2::1 dev veth0 &>/dev/null + + # - Alpha: IOAM config - + ip netns exec $ioam_node_alpha \ + sysctl -wq net.ipv6.ioam6_id=${ALPHA[0]} &>/dev/null + ip netns exec $ioam_node_alpha \ + sysctl -wq net.ipv6.ioam6_id_wide=${ALPHA[1]} &>/dev/null + ip netns exec $ioam_node_alpha \ + sysctl -wq net.ipv6.conf.veth0.ioam6_id=${ALPHA[4]} &>/dev/null + ip netns exec $ioam_node_alpha \ + sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${ALPHA[5]} &>/dev/null + ip -netns $ioam_node_alpha \ + ioam namespace add 123 data ${ALPHA[6]} wide ${ALPHA[7]} &>/dev/null + ip -netns $ioam_node_alpha \ + ioam schema add ${ALPHA[8]} "${ALPHA[9]}" &>/dev/null + ip -netns $ioam_node_alpha \ + ioam namespace set 123 schema ${ALPHA[8]} &>/dev/null + + # - Beta: IOAM config - + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.all.forwarding=1 &>/dev/null + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.ioam6_id=${BETA[0]} &>/dev/null + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.ioam6_id_wide=${BETA[1]} &>/dev/null + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1 &>/dev/null + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth0.ioam6_id=${BETA[2]} &>/dev/null + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${BETA[3]} &>/dev/null + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth1.ioam6_id=${BETA[4]} &>/dev/null + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth1.ioam6_id_wide=${BETA[5]} &>/dev/null + ip -netns $ioam_node_beta ioam namespace add 123 &>/dev/null + + sleep 1 + + ip netns exec $ioam_node_alpha ping6 -c 5 -W 1 2001:db8:2::2 &>/dev/null + if [ $? != 0 ] + then + echo "SKIP: Setup failed." + cleanup + exit $ksft_skip + fi +} + +log_test_passed() +{ + printf " - TEST: %-57s [ OK ]\n" "$1" + npassed=$((npassed+1)) +} + +log_test_skipped() +{ + printf " - TEST: %-57s [SKIP]\n" "$1" + nskipped=$((nskipped+1)) +} + +log_test_failed() +{ + printf " - TEST: %-57s [FAIL]\n" "$1" + nfailed=$((nfailed+1)) +} + +run_test() +{ + local name=$1 + local desc=$2 + local ip6_src=$3 + local trace_type=$4 + local trace_size=$5 + local ioam_ns=$6 + local type=$7 + + ip netns exec $ioam_node_gamma \ + ./ioam6_parser veth0 $name $ip6_src 2001:db8:2::2 \ + $trace_type $trace_size $ioam_ns $type & + local spid=$! + sleep 0.1 + + ip netns exec $ioam_node_alpha ping6 -t 64 -c 1 -W 1 2001:db8:2::2 &>/dev/null + if [ $? != 0 ] + then + log_test_failed "${desc}" + kill -2 $spid &>/dev/null + else + wait $spid + [ $? == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" + fi +} + +run() +{ + local test + + echo + printf "+" + printf "%0.s-" {1..72} + printf "+" + echo + printf "| %-28s LOCAL tests %-29s |" + echo + printf "+" + printf "%0.s-" {1..72} + printf "+" + echo + + echo + echo "Global config" + for test in $TESTS_LOCAL + do + $test + done + + echo + echo "Inline mode" + for test in $TESTS_LOCAL + do + $test "inline" + done + + echo + echo "Encap mode" + for test in $TESTS_LOCAL + do + $test "encap" + done + + echo + printf "+" + printf "%0.s-" {1..72} + printf "+" + echo + printf "| %-28s OUTPUT tests %-28s |" + echo + printf "+" + printf "%0.s-" {1..72} + printf "+" + echo + + # set OUTPUT settings + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=0 &>/dev/null + + echo + echo "Inline mode" + for test in $TESTS_OUTPUT + do + $test "inline" + done + + echo + echo "Encap mode" + for test in $TESTS_OUTPUT + do + $test "encap" + done + + echo + echo "Encap mode (with tunsrc)" + for test in $TESTS_OUTPUT + do + $test "encap" "tunsrc" + done + + # clean OUTPUT settings + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1 &>/dev/null + + echo + printf "+" + printf "%0.s-" {1..72} + printf "+" + echo + printf "| %-28s INPUT tests %-29s |" + echo + printf "+" + printf "%0.s-" {1..72} + printf "+" + echo + + # set INPUT settings + ip -netns $ioam_node_alpha ioam namespace del 123 &>/dev/null + + echo + echo "Inline mode" + for test in $TESTS_INPUT + do + $test "inline" + done + + echo + echo "Encap mode" + for test in $TESTS_INPUT + do + $test "encap" + done + + # clean INPUT settings + ip -netns $ioam_node_alpha \ + ioam namespace add 123 data ${ALPHA[6]} wide ${ALPHA[7]} &>/dev/null + ip -netns $ioam_node_alpha \ + ioam namespace set 123 schema ${ALPHA[8]} &>/dev/null + + echo + printf "+" + printf "%0.s-" {1..72} + printf "+" + echo + printf "| %-30s Results %-31s |" + echo + printf "+" + printf "%0.s-" {1..72} + printf "+" + echo + + echo + echo "- Passed: ${npassed}" + echo "- Skipped: ${nskipped}" + echo "- Failed: ${nfailed}" + echo +} + +bit2type=( + 0x800000 0x400000 0x200000 0x100000 0x080000 0x040000 0x020000 0x010000 + 0x008000 0x004000 0x002000 0x001000 0x000800 0x000400 0x000200 0x000100 + 0x000080 0x000040 0x000020 0x000010 0x000008 0x000004 0x000002 0x000001 +) +bit2size=( 4 4 4 4 4 4 4 4 8 8 8 4 4 4 4 4 4 4 4 4 4 4 4 0 ) + + +################################################################################ +# # +# LOCAL tests # +# # +################################################################################ + +local_sysctl_ioam_id() +{ + ############################################################################## + # Make sure the sysctl "net.ipv6.ioam6_id" works as expected. # + ############################################################################## + local desc="Sysctl net.ipv6.ioam6_id" + + [ ! -z $1 ] && return + + ip netns exec $ioam_node_alpha \ + sysctl net.ipv6.ioam6_id 2>/dev/null | grep -wq ${ALPHA[0]} + + [ $? == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" +} + +local_sysctl_ioam_id_wide() +{ + ############################################################################## + # Make sure the sysctl "net.ipv6.ioam6_id_wide" works as expected. # + ############################################################################## + local desc="Sysctl net.ipv6.ioam6_id_wide" + + [ ! -z $1 ] && return + + ip netns exec $ioam_node_alpha \ + sysctl net.ipv6.ioam6_id_wide 2>/dev/null | grep -wq ${ALPHA[1]} + + [ $? == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" +} + +local_sysctl_ioam_intf_id() +{ + ############################################################################## + # Make sure the sysctl "net.ipv6.conf.XX.ioam6_id" works as expected. # + ############################################################################## + local desc="Sysctl net.ipv6.conf.XX.ioam6_id" + + [ ! -z $1 ] && return + + ip netns exec $ioam_node_alpha \ + sysctl net.ipv6.conf.veth0.ioam6_id 2>/dev/null | grep -wq ${ALPHA[4]} + + [ $? == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" +} + +local_sysctl_ioam_intf_id_wide() +{ + ############################################################################## + # Make sure the sysctl "net.ipv6.conf.XX.ioam6_id_wide" works as expected. # + ############################################################################## + local desc="Sysctl net.ipv6.conf.XX.ioam6_id_wide" + + [ ! -z $1 ] && return + + ip netns exec $ioam_node_alpha \ + sysctl net.ipv6.conf.veth0.ioam6_id_wide 2>/dev/null | grep -wq ${ALPHA[5]} + + [ $? == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" +} + +local_sysctl_ioam_intf_enabled() +{ + ############################################################################## + # Make sure the sysctl "net.ipv6.conf.XX.ioam6_enabled" works as expected. # + ############################################################################## + local desc="Sysctl net.ipv6.conf.XX.ioam6_enabled" + + [ ! -z $1 ] && return + + ip netns exec $ioam_node_beta \ + sysctl net.ipv6.conf.veth0.ioam6_enabled 2>/dev/null | grep -wq 1 + + [ $? == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" +} + +local_ioam_namespace() +{ + ############################################################################## + # Make sure the creation of an IOAM Namespace works as expected. # + ############################################################################## + local desc="Create an IOAM Namespace" + + [ ! -z $1 ] && return + + ip -netns $ioam_node_alpha \ + ioam namespace show 2>/dev/null | grep -wq 123 + local ret=$? + + ip -netns $ioam_node_alpha \ + ioam namespace show 2>/dev/null | grep -wq ${ALPHA[6]} + ret=$((ret + $?)) + + ip -netns $ioam_node_alpha \ + ioam namespace show 2>/dev/null | grep -wq ${ALPHA[7]} + ret=$((ret + $?)) + + [ $ret == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" +} + +local_ioam_schema() +{ + ############################################################################## + # Make sure the creation of an IOAM Schema works as expected. # + ############################################################################## + local desc="Create an IOAM Schema" + + [ ! -z $1 ] && return + + ip -netns $ioam_node_alpha \ + ioam schema show 2>/dev/null | grep -wq ${ALPHA[8]} + local ret=$? + + local sc_data=$( + for i in `seq 0 $((${#ALPHA[9]}-1))` + do + chr=${ALPHA[9]:i:1} + printf "%x " "'${chr}" + done + ) + + ip -netns $ioam_node_alpha \ + ioam schema show 2>/dev/null | grep -q "$sc_data" + ret=$((ret + $?)) + + [ $ret == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" +} + +local_ioam_schema_namespace() +{ + ############################################################################## + # Make sure the binding of a Schema to a Namespace works as expected. # + ############################################################################## + local desc="Bind an IOAM Schema to an IOAM Namespace" + + [ ! -z $1 ] && return + + ip -netns $ioam_node_alpha \ + ioam namespace show 2>/dev/null | grep -wq ${ALPHA[8]} + local ret=$? + + ip -netns $ioam_node_alpha \ + ioam schema show 2>/dev/null | grep -wq 123 + ret=$((ret + $?)) + + [ $ret == 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}" +} + +local_route_ns() +{ + ############################################################################## + # Make sure the Namespace-ID is always provided, whatever the mode. # + ############################################################################## + local desc="Mandatory Namespace-ID" + local mode + + [ -z $1 ] && return + + [ "$1" == "encap" ] && mode="$1 tundst 2001:db8:2::2" || mode="$1" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type 0x800000 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret1=$? + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type 0x800000 ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret2=$? + + [[ $ret1 == 0 || $ret2 != 0 ]] && log_test_failed "${desc}" \ + || log_test_passed "${desc}" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null +} + +local_route_tunsrc() +{ + ############################################################################## + # Make sure the Tunnel Source is only (and possibly) used with encap mode. # + ############################################################################## + local desc + local mode + local mode_tunsrc + + [ -z $1 ] && return + + if [ "$1" == "encap" ] + then + desc="Optional Tunnel Source" + mode="$1 tundst 2001:db8:2::2" + mode_tunsrc="$1 tunsrc 2001:db8:1::50 tundst 2001:db8:2::2" + else + desc="Unneeded Tunnel Source" + mode="$1" + mode_tunsrc="$1 tunsrc 2001:db8:1::50" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type 0x800000 ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret1=$? + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode_tunsrc trace prealloc type 0x800000 ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret2=$? + + if [ "$1" == "encap" ] + then + [[ $ret1 != 0 || $ret2 != 0 ]] && log_test_failed "${desc}" \ + || log_test_passed "${desc}" + else + [[ $ret1 != 0 || $ret2 == 0 ]] && log_test_failed "${desc}" \ + || log_test_passed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null +} + +local_route_tundst() +{ + ############################################################################## + # Make sure the Tunnel Destination is only (and always) used with encap mode.# + ############################################################################## + local desc + + [ -z $1 ] && return + + [ "$1" == "encap" ] && desc="Mandatory Tunnel Destination" \ + || desc="Unneeded Tunnel Destination" + + local mode="$1" + local mode_tundst="$1 tundst 2001:db8:2::2" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type 0x800000 ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret1=$? + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode_tundst trace prealloc type 0x800000 ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret2=$? + + if [ "$1" == "encap" ] + then + [[ $ret1 == 0 || $ret2 != 0 ]] && log_test_failed "${desc}" \ + || log_test_passed "${desc}" + else + [[ $ret1 != 0 || $ret2 == 0 ]] && log_test_failed "${desc}" \ + || log_test_passed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null +} + +local_route_trace_type() +{ + ############################################################################## + # Make sure the Trace Type is always provided, whatever the mode. # + ############################################################################## + local desc="Mandatory Trace Type" + local mode + + [ -z $1 ] && return + + [ "$1" == "encap" ] && mode="$1 tundst 2001:db8:2::2" || mode="$1" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret1=$? + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type 0x800000 ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret2=$? + + [[ $ret1 == 0 || $ret2 != 0 ]] && log_test_failed "${desc}" \ + || log_test_passed "${desc}" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null +} + +local_route_trace_size() +{ + ############################################################################## + # Make sure the Trace Size is always provided, whatever the mode. # + ############################################################################## + local desc="Mandatory Trace Size" + local mode + + [ -z $1 ] && return + + [ "$1" == "encap" ] && mode="$1 tundst 2001:db8:2::2" || mode="$1" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type 0x800000 ns 0 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret1=$? + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type 0x800000 ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + local ret2=$? + + [[ $ret1 == 0 || $ret2 != 0 ]] && log_test_failed "${desc}" \ + || log_test_passed "${desc}" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null +} + +local_route_trace_type_bits() +{ + ############################################################################## + # Make sure only allowed bits (0-11 and 22) are accepted. # + ############################################################################## + local desc="Trace Type bits" + local mode + + [ -z $1 ] && return + + [ "$1" == "encap" ] && mode="$1 tundst 2001:db8:2::2" || mode="$1" + + local i + for i in {0..23} + do + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type ${bit2type[$i]} ns 0 size 4 \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [[ ($? == 0 && (($i -ge 12 && $i -le 21) || $i == 23)) || + ($? != 0 && (($i -ge 0 && $i -le 11) || $i == 22)) ]] + then + local err=1 + break + fi + done + + [ -z $err ] && log_test_passed "${desc}" || log_test_failed "${desc}" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null +} + +local_route_trace_size_values() +{ + ############################################################################## + # Make sure only allowed sizes (multiples of four in [4,244]) are accepted. # + ############################################################################## + local desc="Trace Size values" + local mode + + [ -z $1 ] && return + + [ "$1" == "encap" ] && mode="$1 tundst 2001:db8:2::2" || mode="$1" + + # we also try the next multiple of four after the MAX to check it's refused + local i + for i in {0..248} + do + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type 0x800000 ns 0 size $i \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [[ ($? == 0 && ($i == 0 || $i == 248 || $(( $i % 4 )) != 0)) || + ($? != 0 && $i != 0 && $i != 248 && $(( $i % 4 )) == 0) ]] + then + local err=1 + break + fi + done + + [ -z $err ] && log_test_passed "${desc}" || log_test_failed "${desc}" + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null +} + + +################################################################################ +# # +# OUTPUT tests # +# # +################################################################################ + +output_undef_ns() +{ + ############################################################################## + # Make sure an IOAM encapsulating node does NOT fill the trace when the # + # corresponding IOAM Namespace-ID is not configured locally. # + ############################################################################## + local desc="Unknown IOAM Namespace-ID" + local ns=0 + local tr_type=0x800000 + local tr_size=4 + local mode="$1" + local saddr="2001:db8:1::2" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + if [ "$2" == "tunsrc" ] + then + saddr="2001:db8:1::50" + mode+=" tunsrc 2001:db8:1::50" + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" $saddr $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +output_no_room() +{ + ############################################################################## + # Make sure an IOAM encapsulating node does NOT fill the trace AND sets the # + # Overflow flag when there is not enough room for its data. # + ############################################################################## + local desc="Missing room for data" + local ns=123 + local tr_type=0xc00000 + local tr_size=4 + local mode="$1" + local saddr="2001:db8:1::2" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + if [ "$2" == "tunsrc" ] + then + saddr="2001:db8:1::50" + mode+=" tunsrc 2001:db8:1::50" + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" $saddr $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +output_no_room_oss() +{ + ############################################################################## + # Make sure an IOAM encapsulating node does NOT fill the trace AND sets the # + # Overflow flag when there is not enough room for the Opaque State Snapshot. # + ############################################################################## + local desc="Missing room for Opaque State Snapshot" + local ns=123 + local tr_type=0x000002 + local tr_size=4 + local mode="$1" + local saddr="2001:db8:1::2" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + if [ "$2" == "tunsrc" ] + then + saddr="2001:db8:1::50" + mode+=" tunsrc 2001:db8:1::50" + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" $saddr $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +output_bits() +{ + ############################################################################## + # Make sure an IOAM encapsulating node implements all supported bits by # + # checking it correctly fills the trace with its data. # + ############################################################################## + local desc="Trace Type with supported bit only" + local ns=123 + local mode="$1" + local saddr="2001:db8:1::2" + + if [ "$1" == "encap" ] + then + if [ "$2" == "tunsrc" ] + then + saddr="2001:db8:1::50" + mode+=" tunsrc 2001:db8:1::50" + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + local tmp=${bit2size[22]} + bit2size[22]=$(( $tmp + ${#ALPHA[9]} + ((4 - (${#ALPHA[9]} % 4)) % 4) )) + + local i + for i in {0..11} {22..22} + do + local descr="${desc//$i}" + + if [[ "$1" == "encap" && $encap_tests != 0 ]] + then + log_test_skipped "${descr}" + continue + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc \ + type ${bit2type[$i]} ns $ns size ${bit2size[$i]} \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test "output_bit$i" "${descr}" $saddr \ + ${bit2type[$i]} ${bit2size[$i]} $ns $1 + else + log_test_failed "${descr}" + fi + done + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null + + bit2size[22]=$tmp +} + +output_sizes() +{ + ############################################################################## + # Make sure an IOAM encapsulating node allocates supported sizes correctly. # + ############################################################################## + local desc="Trace Size of bytes" + local ns=0 + local tr_type=0x800000 + local mode="$1" + local saddr="2001:db8:1::2" + + if [ "$1" == "encap" ] + then + if [ "$2" == "tunsrc" ] + then + saddr="2001:db8:1::50" + mode+=" tunsrc 2001:db8:1::50" + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + local i + for i in $(seq 4 4 244) + do + local descr="${desc//$i}" + + if [[ "$1" == "encap" && $encap_tests != 0 ]] + then + log_test_skipped "${descr}" + continue + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $i \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test "output_size$i" "${descr}" $saddr $tr_type $i $ns $1 + else + log_test_failed "${descr}" + fi + done + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +output_full_supp_trace() +{ + ############################################################################## + # Make sure an IOAM encapsulating node correctly fills a trace when all # + # supported bits are set. # + ############################################################################## + local desc="Full supported trace" + local ns=123 + local tr_type=0xfff002 + local tr_size + local mode="$1" + local saddr="2001:db8:1::2" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + if [ "$2" == "tunsrc" ] + then + saddr="2001:db8:1::50" + mode+=" tunsrc 2001:db8:1::50" + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + local i + tr_size=$(( ${#ALPHA[9]} + ((4 - (${#ALPHA[9]} % 4)) % 4) )) + for i in {0..11} {22..22} + do + tr_size=$((tr_size + bit2size[$i])) + done + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" $saddr $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + + +################################################################################ +# # +# INPUT tests # +# # +################################################################################ + +input_undef_ns() +{ + ############################################################################## + # Make sure an IOAM node does NOT fill the trace when the corresponding IOAM # + # Namespace-ID is not configured locally. # + ############################################################################## + local desc="Unknown IOAM Namespace-ID" + local ns=0 + local tr_type=0x800000 + local tr_size=4 + local mode="$1" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" 2001:db8:1::2 $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +input_no_room() +{ + ############################################################################## + # Make sure an IOAM node does NOT fill the trace AND sets the Overflow flag # + # when there is not enough room for its data. # + ############################################################################## + local desc="Missing room for data" + local ns=123 + local tr_type=0xc00000 + local tr_size=4 + local mode="$1" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" 2001:db8:1::2 $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +input_no_room_oss() +{ + ############################################################################## + # Make sure an IOAM node does NOT fill the trace AND sets the Overflow flag # + # when there is not enough room for the Opaque State Snapshot. # + ############################################################################## + local desc="Missing room for Opaque State Snapshot" + local ns=123 + local tr_type=0x000002 + local tr_size=4 + local mode="$1" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" 2001:db8:1::2 $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +input_disabled() +{ + ############################################################################## + # Make sure an IOAM node does NOT fill the trace when IOAM is not enabled on # + # the corresponding (ingress) interface. # + ############################################################################## + local desc="IOAM disabled on ingress interface" + local ns=123 + local tr_type=0x800000 + local tr_size=4 + local mode="$1" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + # Exception: disable IOAM on ingress interface + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=0 &>/dev/null + local ret=$? + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + ret=$((ret + $?)) + + if [ $ret == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" 2001:db8:1::2 $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + # Clean Exception + ip netns exec $ioam_node_beta \ + sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1 &>/dev/null + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +input_oflag() +{ + ############################################################################## + # Make sure an IOAM node does NOT fill the trace when the Overflow flag is # + # set. # + ############################################################################## + local desc="Overflow flag is set" + local ns=123 + local tr_type=0xc00000 + local tr_size=4 + local mode="$1" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + # Exception: + # Here, we need the sender to set the Overflow flag. For that, we will add + # back the IOAM namespace that was previously configured on the sender. + ip -netns $ioam_node_alpha ioam namespace add 123 &>/dev/null + local ret=$? + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + ret=$((ret + $?)) + + if [ $ret == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" 2001:db8:1::2 $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + # Clean Exception + ip -netns $ioam_node_alpha ioam namespace del 123 &>/dev/null + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +input_bits() +{ + ############################################################################## + # Make sure an IOAM node implements all supported bits by checking it # + # correctly fills the trace with its data. # + ############################################################################## + local desc="Trace Type with supported bit only" + local ns=123 + local mode="$1" + + if [ "$1" == "encap" ] + then + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + local tmp=${bit2size[22]} + bit2size[22]=$(( $tmp + ${#BETA[9]} + ((4 - (${#BETA[9]} % 4)) % 4) )) + + local i + for i in {0..11} {22..22} + do + local descr="${desc//$i}" + + if [[ "$1" == "encap" && $encap_tests != 0 ]] + then + log_test_skipped "${descr}" + continue + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc \ + type ${bit2type[$i]} ns $ns size ${bit2size[$i]} \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test "input_bit$i" "${descr}" 2001:db8:1::2 \ + ${bit2type[$i]} ${bit2size[$i]} $ns $1 + else + log_test_failed "${descr}" + fi + done + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null + + bit2size[22]=$tmp +} + +input_sizes() +{ + ############################################################################## + # Make sure an IOAM node handles all supported sizes correctly. # + ############################################################################## + local desc="Trace Size of bytes" + local ns=123 + local tr_type=0x800000 + local mode="$1" + + if [ "$1" == "encap" ] + then + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + local i + for i in $(seq 4 4 244) + do + local descr="${desc//$i}" + + if [[ "$1" == "encap" && $encap_tests != 0 ]] + then + log_test_skipped "${descr}" + continue + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $i \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test "input_size$i" "${descr}" 2001:db8:1::2 $tr_type $i $ns $1 + else + log_test_failed "${descr}" + fi + done + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + +input_full_supp_trace() +{ + ############################################################################## + # Make sure an IOAM node correctly fills a trace when all supported bits are # + # set. # + ############################################################################## + local desc="Full supported trace" + local ns=123 + local tr_type=0xfff002 + local tr_size + local mode="$1" + + if [ "$1" == "encap" ] + then + if [ $encap_tests != 0 ] + then + log_test_skipped "${desc}" + return + fi + + mode+=" tundst 2001:db8:2::2" + ip -netns $ioam_node_gamma link set ip6tnl0 up &>/dev/null + fi + + local i + tr_size=$(( ${#BETA[9]} + ((4 - (${#BETA[9]} % 4)) % 4) )) + for i in {0..11} {22..22} + do + tr_size=$((tr_size + bit2size[$i])) + done + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 \ + encap ioam6 mode $mode trace prealloc type $tr_type ns $ns size $tr_size \ + via 2001:db8:1::1 dev veth0 &>/dev/null + + if [ $? == 0 ] + then + run_test ${FUNCNAME[0]} "${desc}" 2001:db8:1::2 $tr_type $tr_size $ns $1 + else + log_test_failed "${desc}" + fi + + ip -netns $ioam_node_alpha \ + route change 2001:db8:2::/64 via 2001:db8:1::1 dev veth0 &>/dev/null + + [ "$1" == "encap" ] && ip -netns $ioam_node_gamma \ + link set ip6tnl0 down &>/dev/null +} + + +################################################################################ +# # +# MAIN # +# # +################################################################################ + +npassed=0 +nskipped=0 +nfailed=0 + +if [ "$(id -u)" -ne 0 ] +then + echo "SKIP: Need root privileges." + exit $ksft_skip +fi + +if [ ! -x "$(command -v ip)" ] +then + echo "SKIP: Could not run test without ip tool." + exit $ksft_skip +fi + +check_kernel_compatibility +setup +run +cleanup + +if [ $nfailed != 0 ] +then + exit $ksft_fail +fi + +exit $ksft_pass diff --git a/tools/testing/selftests/net/ioam6_parser.c b/tools/testing/selftests/net/ioam6_parser.c new file mode 100644 index 000000000000..de4b5c9e8a74 --- /dev/null +++ b/tools/testing/selftests/net/ioam6_parser.c @@ -0,0 +1,1101 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Author: Justin Iurman (justin.iurman@uliege.be) + * + * IOAM tester for IPv6, see ioam6.sh for details on each test case. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct ioam_config { + __u32 id; + __u64 wide; + __u16 ingr_id; + __u16 egr_id; + __u32 ingr_wide; + __u32 egr_wide; + __u32 ns_data; + __u64 ns_wide; + __u32 sc_id; + __u8 hlim; + char *sc_data; +}; + +/* + * Be careful if you modify structs below - everything MUST be kept synchronized + * with configurations inside ioam6.sh and always reflect the same. + */ + +static struct ioam_config node1 = { + .id = 1, + .wide = 11111111, + .ingr_id = 0xffff, /* default value */ + .egr_id = 101, + .ingr_wide = 0xffffffff, /* default value */ + .egr_wide = 101101, + .ns_data = 0xdeadbeef, + .ns_wide = 0xcafec0caf00dc0de, + .sc_id = 777, + .sc_data = "something that will be 4n-aligned", + .hlim = 64, +}; + +static struct ioam_config node2 = { + .id = 2, + .wide = 22222222, + .ingr_id = 201, + .egr_id = 202, + .ingr_wide = 201201, + .egr_wide = 202202, + .ns_data = 0xffffffff, /* default value */ + .ns_wide = 0xffffffffffffffff, /* default value */ + .sc_id = 0xffffff, /* default value */ + .sc_data = NULL, + .hlim = 63, +}; + +enum { + /********** + * OUTPUT * + **********/ + __TEST_OUT_MIN, + + TEST_OUT_UNDEF_NS, + TEST_OUT_NO_ROOM, + TEST_OUT_NO_ROOM_OSS, + TEST_OUT_BIT0, + TEST_OUT_BIT1, + TEST_OUT_BIT2, + TEST_OUT_BIT3, + TEST_OUT_BIT4, + TEST_OUT_BIT5, + TEST_OUT_BIT6, + TEST_OUT_BIT7, + TEST_OUT_BIT8, + TEST_OUT_BIT9, + TEST_OUT_BIT10, + TEST_OUT_BIT11, + TEST_OUT_BIT22, + TEST_OUT_SIZE4, + TEST_OUT_SIZE8, + TEST_OUT_SIZE12, + TEST_OUT_SIZE16, + TEST_OUT_SIZE20, + TEST_OUT_SIZE24, + TEST_OUT_SIZE28, + TEST_OUT_SIZE32, + TEST_OUT_SIZE36, + TEST_OUT_SIZE40, + TEST_OUT_SIZE44, + TEST_OUT_SIZE48, + TEST_OUT_SIZE52, + TEST_OUT_SIZE56, + TEST_OUT_SIZE60, + TEST_OUT_SIZE64, + TEST_OUT_SIZE68, + TEST_OUT_SIZE72, + TEST_OUT_SIZE76, + TEST_OUT_SIZE80, + TEST_OUT_SIZE84, + TEST_OUT_SIZE88, + TEST_OUT_SIZE92, + TEST_OUT_SIZE96, + TEST_OUT_SIZE100, + TEST_OUT_SIZE104, + TEST_OUT_SIZE108, + TEST_OUT_SIZE112, + TEST_OUT_SIZE116, + TEST_OUT_SIZE120, + TEST_OUT_SIZE124, + TEST_OUT_SIZE128, + TEST_OUT_SIZE132, + TEST_OUT_SIZE136, + TEST_OUT_SIZE140, + TEST_OUT_SIZE144, + TEST_OUT_SIZE148, + TEST_OUT_SIZE152, + TEST_OUT_SIZE156, + TEST_OUT_SIZE160, + TEST_OUT_SIZE164, + TEST_OUT_SIZE168, + TEST_OUT_SIZE172, + TEST_OUT_SIZE176, + TEST_OUT_SIZE180, + TEST_OUT_SIZE184, + TEST_OUT_SIZE188, + TEST_OUT_SIZE192, + TEST_OUT_SIZE196, + TEST_OUT_SIZE200, + TEST_OUT_SIZE204, + TEST_OUT_SIZE208, + TEST_OUT_SIZE212, + TEST_OUT_SIZE216, + TEST_OUT_SIZE220, + TEST_OUT_SIZE224, + TEST_OUT_SIZE228, + TEST_OUT_SIZE232, + TEST_OUT_SIZE236, + TEST_OUT_SIZE240, + TEST_OUT_SIZE244, + TEST_OUT_FULL_SUPP_TRACE, + + __TEST_OUT_MAX, + + /********* + * INPUT * + *********/ + __TEST_IN_MIN, + + TEST_IN_UNDEF_NS, + TEST_IN_NO_ROOM, + TEST_IN_NO_ROOM_OSS, + TEST_IN_DISABLED, + TEST_IN_OFLAG, + TEST_IN_BIT0, + TEST_IN_BIT1, + TEST_IN_BIT2, + TEST_IN_BIT3, + TEST_IN_BIT4, + TEST_IN_BIT5, + TEST_IN_BIT6, + TEST_IN_BIT7, + TEST_IN_BIT8, + TEST_IN_BIT9, + TEST_IN_BIT10, + TEST_IN_BIT11, + TEST_IN_BIT22, + TEST_IN_SIZE4, + TEST_IN_SIZE8, + TEST_IN_SIZE12, + TEST_IN_SIZE16, + TEST_IN_SIZE20, + TEST_IN_SIZE24, + TEST_IN_SIZE28, + TEST_IN_SIZE32, + TEST_IN_SIZE36, + TEST_IN_SIZE40, + TEST_IN_SIZE44, + TEST_IN_SIZE48, + TEST_IN_SIZE52, + TEST_IN_SIZE56, + TEST_IN_SIZE60, + TEST_IN_SIZE64, + TEST_IN_SIZE68, + TEST_IN_SIZE72, + TEST_IN_SIZE76, + TEST_IN_SIZE80, + TEST_IN_SIZE84, + TEST_IN_SIZE88, + TEST_IN_SIZE92, + TEST_IN_SIZE96, + TEST_IN_SIZE100, + TEST_IN_SIZE104, + TEST_IN_SIZE108, + TEST_IN_SIZE112, + TEST_IN_SIZE116, + TEST_IN_SIZE120, + TEST_IN_SIZE124, + TEST_IN_SIZE128, + TEST_IN_SIZE132, + TEST_IN_SIZE136, + TEST_IN_SIZE140, + TEST_IN_SIZE144, + TEST_IN_SIZE148, + TEST_IN_SIZE152, + TEST_IN_SIZE156, + TEST_IN_SIZE160, + TEST_IN_SIZE164, + TEST_IN_SIZE168, + TEST_IN_SIZE172, + TEST_IN_SIZE176, + TEST_IN_SIZE180, + TEST_IN_SIZE184, + TEST_IN_SIZE188, + TEST_IN_SIZE192, + TEST_IN_SIZE196, + TEST_IN_SIZE200, + TEST_IN_SIZE204, + TEST_IN_SIZE208, + TEST_IN_SIZE212, + TEST_IN_SIZE216, + TEST_IN_SIZE220, + TEST_IN_SIZE224, + TEST_IN_SIZE228, + TEST_IN_SIZE232, + TEST_IN_SIZE236, + TEST_IN_SIZE240, + TEST_IN_SIZE244, + TEST_IN_FULL_SUPP_TRACE, + + __TEST_IN_MAX, + + __TEST_MAX, +}; + +static int check_header(int tid, struct ioam6_trace_hdr *trace, + __u32 trace_type, __u8 trace_size, __u16 ioam_ns) +{ + if (__be16_to_cpu(trace->namespace_id) != ioam_ns || + __be32_to_cpu(trace->type_be32) != (trace_type << 8)) + return 1; + + switch (tid) { + case TEST_OUT_UNDEF_NS: + case TEST_IN_UNDEF_NS: + case TEST_IN_DISABLED: + return trace->overflow == 1 || + trace->nodelen != 1 || + trace->remlen != 1; + + case TEST_OUT_NO_ROOM: + case TEST_IN_NO_ROOM: + case TEST_IN_OFLAG: + return trace->overflow == 0 || + trace->nodelen != 2 || + trace->remlen != 1; + + case TEST_OUT_NO_ROOM_OSS: + return trace->overflow == 0 || + trace->nodelen != 0 || + trace->remlen != 1; + + case TEST_IN_NO_ROOM_OSS: + case TEST_OUT_BIT22: + case TEST_IN_BIT22: + return trace->overflow == 1 || + trace->nodelen != 0 || + trace->remlen != 0; + + case TEST_OUT_BIT0: + case TEST_IN_BIT0: + case TEST_OUT_BIT1: + case TEST_IN_BIT1: + case TEST_OUT_BIT2: + case TEST_IN_BIT2: + case TEST_OUT_BIT3: + case TEST_IN_BIT3: + case TEST_OUT_BIT4: + case TEST_IN_BIT4: + case TEST_OUT_BIT5: + case TEST_IN_BIT5: + case TEST_OUT_BIT6: + case TEST_IN_BIT6: + case TEST_OUT_BIT7: + case TEST_IN_BIT7: + case TEST_OUT_BIT11: + case TEST_IN_BIT11: + return trace->overflow == 1 || + trace->nodelen != 1 || + trace->remlen != 0; + + case TEST_OUT_BIT8: + case TEST_IN_BIT8: + case TEST_OUT_BIT9: + case TEST_IN_BIT9: + case TEST_OUT_BIT10: + case TEST_IN_BIT10: + return trace->overflow == 1 || + trace->nodelen != 2 || + trace->remlen != 0; + + case TEST_OUT_SIZE4: + case TEST_OUT_SIZE8: + case TEST_OUT_SIZE12: + case TEST_OUT_SIZE16: + case TEST_OUT_SIZE20: + case TEST_OUT_SIZE24: + case TEST_OUT_SIZE28: + case TEST_OUT_SIZE32: + case TEST_OUT_SIZE36: + case TEST_OUT_SIZE40: + case TEST_OUT_SIZE44: + case TEST_OUT_SIZE48: + case TEST_OUT_SIZE52: + case TEST_OUT_SIZE56: + case TEST_OUT_SIZE60: + case TEST_OUT_SIZE64: + case TEST_OUT_SIZE68: + case TEST_OUT_SIZE72: + case TEST_OUT_SIZE76: + case TEST_OUT_SIZE80: + case TEST_OUT_SIZE84: + case TEST_OUT_SIZE88: + case TEST_OUT_SIZE92: + case TEST_OUT_SIZE96: + case TEST_OUT_SIZE100: + case TEST_OUT_SIZE104: + case TEST_OUT_SIZE108: + case TEST_OUT_SIZE112: + case TEST_OUT_SIZE116: + case TEST_OUT_SIZE120: + case TEST_OUT_SIZE124: + case TEST_OUT_SIZE128: + case TEST_OUT_SIZE132: + case TEST_OUT_SIZE136: + case TEST_OUT_SIZE140: + case TEST_OUT_SIZE144: + case TEST_OUT_SIZE148: + case TEST_OUT_SIZE152: + case TEST_OUT_SIZE156: + case TEST_OUT_SIZE160: + case TEST_OUT_SIZE164: + case TEST_OUT_SIZE168: + case TEST_OUT_SIZE172: + case TEST_OUT_SIZE176: + case TEST_OUT_SIZE180: + case TEST_OUT_SIZE184: + case TEST_OUT_SIZE188: + case TEST_OUT_SIZE192: + case TEST_OUT_SIZE196: + case TEST_OUT_SIZE200: + case TEST_OUT_SIZE204: + case TEST_OUT_SIZE208: + case TEST_OUT_SIZE212: + case TEST_OUT_SIZE216: + case TEST_OUT_SIZE220: + case TEST_OUT_SIZE224: + case TEST_OUT_SIZE228: + case TEST_OUT_SIZE232: + case TEST_OUT_SIZE236: + case TEST_OUT_SIZE240: + case TEST_OUT_SIZE244: + return trace->overflow == 1 || + trace->nodelen != 1 || + trace->remlen != trace_size / 4; + + case TEST_IN_SIZE4: + case TEST_IN_SIZE8: + case TEST_IN_SIZE12: + case TEST_IN_SIZE16: + case TEST_IN_SIZE20: + case TEST_IN_SIZE24: + case TEST_IN_SIZE28: + case TEST_IN_SIZE32: + case TEST_IN_SIZE36: + case TEST_IN_SIZE40: + case TEST_IN_SIZE44: + case TEST_IN_SIZE48: + case TEST_IN_SIZE52: + case TEST_IN_SIZE56: + case TEST_IN_SIZE60: + case TEST_IN_SIZE64: + case TEST_IN_SIZE68: + case TEST_IN_SIZE72: + case TEST_IN_SIZE76: + case TEST_IN_SIZE80: + case TEST_IN_SIZE84: + case TEST_IN_SIZE88: + case TEST_IN_SIZE92: + case TEST_IN_SIZE96: + case TEST_IN_SIZE100: + case TEST_IN_SIZE104: + case TEST_IN_SIZE108: + case TEST_IN_SIZE112: + case TEST_IN_SIZE116: + case TEST_IN_SIZE120: + case TEST_IN_SIZE124: + case TEST_IN_SIZE128: + case TEST_IN_SIZE132: + case TEST_IN_SIZE136: + case TEST_IN_SIZE140: + case TEST_IN_SIZE144: + case TEST_IN_SIZE148: + case TEST_IN_SIZE152: + case TEST_IN_SIZE156: + case TEST_IN_SIZE160: + case TEST_IN_SIZE164: + case TEST_IN_SIZE168: + case TEST_IN_SIZE172: + case TEST_IN_SIZE176: + case TEST_IN_SIZE180: + case TEST_IN_SIZE184: + case TEST_IN_SIZE188: + case TEST_IN_SIZE192: + case TEST_IN_SIZE196: + case TEST_IN_SIZE200: + case TEST_IN_SIZE204: + case TEST_IN_SIZE208: + case TEST_IN_SIZE212: + case TEST_IN_SIZE216: + case TEST_IN_SIZE220: + case TEST_IN_SIZE224: + case TEST_IN_SIZE228: + case TEST_IN_SIZE232: + case TEST_IN_SIZE236: + case TEST_IN_SIZE240: + case TEST_IN_SIZE244: + return trace->overflow == 1 || + trace->nodelen != 1 || + trace->remlen != (trace_size / 4) - trace->nodelen; + + case TEST_OUT_FULL_SUPP_TRACE: + case TEST_IN_FULL_SUPP_TRACE: + return trace->overflow == 1 || + trace->nodelen != 15 || + trace->remlen != 0; + + default: + break; + } + + return 1; +} + +static int check_data(struct ioam6_trace_hdr *trace, __u8 trace_size, + const struct ioam_config cnf, bool is_output) +{ + unsigned int len, i; + __u8 aligned; + __u64 raw64; + __u32 raw32; + __u8 *p; + + if (trace->type.bit12 | trace->type.bit13 | trace->type.bit14 | + trace->type.bit15 | trace->type.bit16 | trace->type.bit17 | + trace->type.bit18 | trace->type.bit19 | trace->type.bit20 | + trace->type.bit21 | trace->type.bit23) + return 1; + + for (i = 0; i < trace->remlen * 4; i++) { + if (trace->data[i] != 0) + return 1; + } + + if (trace->remlen * 4 == trace_size) + return 0; + + p = trace->data + trace->remlen * 4; + + if (trace->type.bit0) { + raw32 = __be32_to_cpu(*((__u32 *)p)); + if (cnf.hlim != (raw32 >> 24) || cnf.id != (raw32 & 0xffffff)) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit1) { + raw32 = __be32_to_cpu(*((__u32 *)p)); + if (cnf.ingr_id != (raw32 >> 16) || + cnf.egr_id != (raw32 & 0xffff)) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit2) { + raw32 = __be32_to_cpu(*((__u32 *)p)); + if ((is_output && raw32 != 0xffffffff) || + (!is_output && (raw32 == 0 || raw32 == 0xffffffff))) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit3) { + raw32 = __be32_to_cpu(*((__u32 *)p)); + if ((is_output && raw32 != 0xffffffff) || + (!is_output && (raw32 == 0 || raw32 == 0xffffffff))) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit4) { + if (__be32_to_cpu(*((__u32 *)p)) != 0xffffffff) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit5) { + if (__be32_to_cpu(*((__u32 *)p)) != cnf.ns_data) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit6) { + if (__be32_to_cpu(*((__u32 *)p)) == 0xffffffff) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit7) { + if (__be32_to_cpu(*((__u32 *)p)) != 0xffffffff) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit8) { + raw64 = __be64_to_cpu(*((__u64 *)p)); + if (cnf.hlim != (raw64 >> 56) || + cnf.wide != (raw64 & 0xffffffffffffff)) + return 1; + p += sizeof(__u64); + } + + if (trace->type.bit9) { + if (__be32_to_cpu(*((__u32 *)p)) != cnf.ingr_wide) + return 1; + p += sizeof(__u32); + + if (__be32_to_cpu(*((__u32 *)p)) != cnf.egr_wide) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit10) { + if (__be64_to_cpu(*((__u64 *)p)) != cnf.ns_wide) + return 1; + p += sizeof(__u64); + } + + if (trace->type.bit11) { + if (__be32_to_cpu(*((__u32 *)p)) != 0xffffffff) + return 1; + p += sizeof(__u32); + } + + if (trace->type.bit22) { + len = cnf.sc_data ? strlen(cnf.sc_data) : 0; + aligned = cnf.sc_data ? __ALIGN_KERNEL(len, 4) : 0; + + raw32 = __be32_to_cpu(*((__u32 *)p)); + if (aligned != (raw32 >> 24) * 4 || + cnf.sc_id != (raw32 & 0xffffff)) + return 1; + p += sizeof(__u32); + + if (cnf.sc_data) { + if (strncmp((char *)p, cnf.sc_data, len)) + return 1; + + p += len; + aligned -= len; + + while (aligned--) { + if (*p != '\0') + return 1; + p += sizeof(__u8); + } + } + } + + return 0; +} + +static int check_ioam_trace(int tid, struct ioam6_trace_hdr *trace, + __u32 trace_type, __u8 trace_size, __u16 ioam_ns) +{ + if (check_header(tid, trace, trace_type, trace_size, ioam_ns)) + return 1; + + if (tid > __TEST_OUT_MIN && tid < __TEST_OUT_MAX) + return check_data(trace, trace_size, node1, true); + + if (tid > __TEST_IN_MIN && tid < __TEST_IN_MAX) + return check_data(trace, trace_size, node2, false); + + return 1; +} + +static int str2id(const char *tname) +{ + if (!strcmp("output_undef_ns", tname)) + return TEST_OUT_UNDEF_NS; + if (!strcmp("output_no_room", tname)) + return TEST_OUT_NO_ROOM; + if (!strcmp("output_no_room_oss", tname)) + return TEST_OUT_NO_ROOM_OSS; + if (!strcmp("output_bit0", tname)) + return TEST_OUT_BIT0; + if (!strcmp("output_bit1", tname)) + return TEST_OUT_BIT1; + if (!strcmp("output_bit2", tname)) + return TEST_OUT_BIT2; + if (!strcmp("output_bit3", tname)) + return TEST_OUT_BIT3; + if (!strcmp("output_bit4", tname)) + return TEST_OUT_BIT4; + if (!strcmp("output_bit5", tname)) + return TEST_OUT_BIT5; + if (!strcmp("output_bit6", tname)) + return TEST_OUT_BIT6; + if (!strcmp("output_bit7", tname)) + return TEST_OUT_BIT7; + if (!strcmp("output_bit8", tname)) + return TEST_OUT_BIT8; + if (!strcmp("output_bit9", tname)) + return TEST_OUT_BIT9; + if (!strcmp("output_bit10", tname)) + return TEST_OUT_BIT10; + if (!strcmp("output_bit11", tname)) + return TEST_OUT_BIT11; + if (!strcmp("output_bit22", tname)) + return TEST_OUT_BIT22; + if (!strcmp("output_size4", tname)) + return TEST_OUT_SIZE4; + if (!strcmp("output_size8", tname)) + return TEST_OUT_SIZE8; + if (!strcmp("output_size12", tname)) + return TEST_OUT_SIZE12; + if (!strcmp("output_size16", tname)) + return TEST_OUT_SIZE16; + if (!strcmp("output_size20", tname)) + return TEST_OUT_SIZE20; + if (!strcmp("output_size24", tname)) + return TEST_OUT_SIZE24; + if (!strcmp("output_size28", tname)) + return TEST_OUT_SIZE28; + if (!strcmp("output_size32", tname)) + return TEST_OUT_SIZE32; + if (!strcmp("output_size36", tname)) + return TEST_OUT_SIZE36; + if (!strcmp("output_size40", tname)) + return TEST_OUT_SIZE40; + if (!strcmp("output_size44", tname)) + return TEST_OUT_SIZE44; + if (!strcmp("output_size48", tname)) + return TEST_OUT_SIZE48; + if (!strcmp("output_size52", tname)) + return TEST_OUT_SIZE52; + if (!strcmp("output_size56", tname)) + return TEST_OUT_SIZE56; + if (!strcmp("output_size60", tname)) + return TEST_OUT_SIZE60; + if (!strcmp("output_size64", tname)) + return TEST_OUT_SIZE64; + if (!strcmp("output_size68", tname)) + return TEST_OUT_SIZE68; + if (!strcmp("output_size72", tname)) + return TEST_OUT_SIZE72; + if (!strcmp("output_size76", tname)) + return TEST_OUT_SIZE76; + if (!strcmp("output_size80", tname)) + return TEST_OUT_SIZE80; + if (!strcmp("output_size84", tname)) + return TEST_OUT_SIZE84; + if (!strcmp("output_size88", tname)) + return TEST_OUT_SIZE88; + if (!strcmp("output_size92", tname)) + return TEST_OUT_SIZE92; + if (!strcmp("output_size96", tname)) + return TEST_OUT_SIZE96; + if (!strcmp("output_size100", tname)) + return TEST_OUT_SIZE100; + if (!strcmp("output_size104", tname)) + return TEST_OUT_SIZE104; + if (!strcmp("output_size108", tname)) + return TEST_OUT_SIZE108; + if (!strcmp("output_size112", tname)) + return TEST_OUT_SIZE112; + if (!strcmp("output_size116", tname)) + return TEST_OUT_SIZE116; + if (!strcmp("output_size120", tname)) + return TEST_OUT_SIZE120; + if (!strcmp("output_size124", tname)) + return TEST_OUT_SIZE124; + if (!strcmp("output_size128", tname)) + return TEST_OUT_SIZE128; + if (!strcmp("output_size132", tname)) + return TEST_OUT_SIZE132; + if (!strcmp("output_size136", tname)) + return TEST_OUT_SIZE136; + if (!strcmp("output_size140", tname)) + return TEST_OUT_SIZE140; + if (!strcmp("output_size144", tname)) + return TEST_OUT_SIZE144; + if (!strcmp("output_size148", tname)) + return TEST_OUT_SIZE148; + if (!strcmp("output_size152", tname)) + return TEST_OUT_SIZE152; + if (!strcmp("output_size156", tname)) + return TEST_OUT_SIZE156; + if (!strcmp("output_size160", tname)) + return TEST_OUT_SIZE160; + if (!strcmp("output_size164", tname)) + return TEST_OUT_SIZE164; + if (!strcmp("output_size168", tname)) + return TEST_OUT_SIZE168; + if (!strcmp("output_size172", tname)) + return TEST_OUT_SIZE172; + if (!strcmp("output_size176", tname)) + return TEST_OUT_SIZE176; + if (!strcmp("output_size180", tname)) + return TEST_OUT_SIZE180; + if (!strcmp("output_size184", tname)) + return TEST_OUT_SIZE184; + if (!strcmp("output_size188", tname)) + return TEST_OUT_SIZE188; + if (!strcmp("output_size192", tname)) + return TEST_OUT_SIZE192; + if (!strcmp("output_size196", tname)) + return TEST_OUT_SIZE196; + if (!strcmp("output_size200", tname)) + return TEST_OUT_SIZE200; + if (!strcmp("output_size204", tname)) + return TEST_OUT_SIZE204; + if (!strcmp("output_size208", tname)) + return TEST_OUT_SIZE208; + if (!strcmp("output_size212", tname)) + return TEST_OUT_SIZE212; + if (!strcmp("output_size216", tname)) + return TEST_OUT_SIZE216; + if (!strcmp("output_size220", tname)) + return TEST_OUT_SIZE220; + if (!strcmp("output_size224", tname)) + return TEST_OUT_SIZE224; + if (!strcmp("output_size228", tname)) + return TEST_OUT_SIZE228; + if (!strcmp("output_size232", tname)) + return TEST_OUT_SIZE232; + if (!strcmp("output_size236", tname)) + return TEST_OUT_SIZE236; + if (!strcmp("output_size240", tname)) + return TEST_OUT_SIZE240; + if (!strcmp("output_size244", tname)) + return TEST_OUT_SIZE244; + if (!strcmp("output_full_supp_trace", tname)) + return TEST_OUT_FULL_SUPP_TRACE; + if (!strcmp("input_undef_ns", tname)) + return TEST_IN_UNDEF_NS; + if (!strcmp("input_no_room", tname)) + return TEST_IN_NO_ROOM; + if (!strcmp("input_no_room_oss", tname)) + return TEST_IN_NO_ROOM_OSS; + if (!strcmp("input_disabled", tname)) + return TEST_IN_DISABLED; + if (!strcmp("input_oflag", tname)) + return TEST_IN_OFLAG; + if (!strcmp("input_bit0", tname)) + return TEST_IN_BIT0; + if (!strcmp("input_bit1", tname)) + return TEST_IN_BIT1; + if (!strcmp("input_bit2", tname)) + return TEST_IN_BIT2; + if (!strcmp("input_bit3", tname)) + return TEST_IN_BIT3; + if (!strcmp("input_bit4", tname)) + return TEST_IN_BIT4; + if (!strcmp("input_bit5", tname)) + return TEST_IN_BIT5; + if (!strcmp("input_bit6", tname)) + return TEST_IN_BIT6; + if (!strcmp("input_bit7", tname)) + return TEST_IN_BIT7; + if (!strcmp("input_bit8", tname)) + return TEST_IN_BIT8; + if (!strcmp("input_bit9", tname)) + return TEST_IN_BIT9; + if (!strcmp("input_bit10", tname)) + return TEST_IN_BIT10; + if (!strcmp("input_bit11", tname)) + return TEST_IN_BIT11; + if (!strcmp("input_bit22", tname)) + return TEST_IN_BIT22; + if (!strcmp("input_size4", tname)) + return TEST_IN_SIZE4; + if (!strcmp("input_size8", tname)) + return TEST_IN_SIZE8; + if (!strcmp("input_size12", tname)) + return TEST_IN_SIZE12; + if (!strcmp("input_size16", tname)) + return TEST_IN_SIZE16; + if (!strcmp("input_size20", tname)) + return TEST_IN_SIZE20; + if (!strcmp("input_size24", tname)) + return TEST_IN_SIZE24; + if (!strcmp("input_size28", tname)) + return TEST_IN_SIZE28; + if (!strcmp("input_size32", tname)) + return TEST_IN_SIZE32; + if (!strcmp("input_size36", tname)) + return TEST_IN_SIZE36; + if (!strcmp("input_size40", tname)) + return TEST_IN_SIZE40; + if (!strcmp("input_size44", tname)) + return TEST_IN_SIZE44; + if (!strcmp("input_size48", tname)) + return TEST_IN_SIZE48; + if (!strcmp("input_size52", tname)) + return TEST_IN_SIZE52; + if (!strcmp("input_size56", tname)) + return TEST_IN_SIZE56; + if (!strcmp("input_size60", tname)) + return TEST_IN_SIZE60; + if (!strcmp("input_size64", tname)) + return TEST_IN_SIZE64; + if (!strcmp("input_size68", tname)) + return TEST_IN_SIZE68; + if (!strcmp("input_size72", tname)) + return TEST_IN_SIZE72; + if (!strcmp("input_size76", tname)) + return TEST_IN_SIZE76; + if (!strcmp("input_size80", tname)) + return TEST_IN_SIZE80; + if (!strcmp("input_size84", tname)) + return TEST_IN_SIZE84; + if (!strcmp("input_size88", tname)) + return TEST_IN_SIZE88; + if (!strcmp("input_size92", tname)) + return TEST_IN_SIZE92; + if (!strcmp("input_size96", tname)) + return TEST_IN_SIZE96; + if (!strcmp("input_size100", tname)) + return TEST_IN_SIZE100; + if (!strcmp("input_size104", tname)) + return TEST_IN_SIZE104; + if (!strcmp("input_size108", tname)) + return TEST_IN_SIZE108; + if (!strcmp("input_size112", tname)) + return TEST_IN_SIZE112; + if (!strcmp("input_size116", tname)) + return TEST_IN_SIZE116; + if (!strcmp("input_size120", tname)) + return TEST_IN_SIZE120; + if (!strcmp("input_size124", tname)) + return TEST_IN_SIZE124; + if (!strcmp("input_size128", tname)) + return TEST_IN_SIZE128; + if (!strcmp("input_size132", tname)) + return TEST_IN_SIZE132; + if (!strcmp("input_size136", tname)) + return TEST_IN_SIZE136; + if (!strcmp("input_size140", tname)) + return TEST_IN_SIZE140; + if (!strcmp("input_size144", tname)) + return TEST_IN_SIZE144; + if (!strcmp("input_size148", tname)) + return TEST_IN_SIZE148; + if (!strcmp("input_size152", tname)) + return TEST_IN_SIZE152; + if (!strcmp("input_size156", tname)) + return TEST_IN_SIZE156; + if (!strcmp("input_size160", tname)) + return TEST_IN_SIZE160; + if (!strcmp("input_size164", tname)) + return TEST_IN_SIZE164; + if (!strcmp("input_size168", tname)) + return TEST_IN_SIZE168; + if (!strcmp("input_size172", tname)) + return TEST_IN_SIZE172; + if (!strcmp("input_size176", tname)) + return TEST_IN_SIZE176; + if (!strcmp("input_size180", tname)) + return TEST_IN_SIZE180; + if (!strcmp("input_size184", tname)) + return TEST_IN_SIZE184; + if (!strcmp("input_size188", tname)) + return TEST_IN_SIZE188; + if (!strcmp("input_size192", tname)) + return TEST_IN_SIZE192; + if (!strcmp("input_size196", tname)) + return TEST_IN_SIZE196; + if (!strcmp("input_size200", tname)) + return TEST_IN_SIZE200; + if (!strcmp("input_size204", tname)) + return TEST_IN_SIZE204; + if (!strcmp("input_size208", tname)) + return TEST_IN_SIZE208; + if (!strcmp("input_size212", tname)) + return TEST_IN_SIZE212; + if (!strcmp("input_size216", tname)) + return TEST_IN_SIZE216; + if (!strcmp("input_size220", tname)) + return TEST_IN_SIZE220; + if (!strcmp("input_size224", tname)) + return TEST_IN_SIZE224; + if (!strcmp("input_size228", tname)) + return TEST_IN_SIZE228; + if (!strcmp("input_size232", tname)) + return TEST_IN_SIZE232; + if (!strcmp("input_size236", tname)) + return TEST_IN_SIZE236; + if (!strcmp("input_size240", tname)) + return TEST_IN_SIZE240; + if (!strcmp("input_size244", tname)) + return TEST_IN_SIZE244; + if (!strcmp("input_full_supp_trace", tname)) + return TEST_IN_FULL_SUPP_TRACE; + + return -1; +} + +static int ipv6_addr_equal(const struct in6_addr *a1, const struct in6_addr *a2) +{ + return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) | + (a1->s6_addr32[1] ^ a2->s6_addr32[1]) | + (a1->s6_addr32[2] ^ a2->s6_addr32[2]) | + (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0; +} + +static int get_u32(__u32 *val, const char *arg, int base) +{ + unsigned long res; + char *ptr; + + if (!arg || !*arg) + return -1; + res = strtoul(arg, &ptr, base); + + if (!ptr || ptr == arg || *ptr) + return -1; + + if (res == ULONG_MAX && errno == ERANGE) + return -1; + + if (res > 0xFFFFFFFFUL) + return -1; + + *val = res; + return 0; +} + +static int get_u16(__u16 *val, const char *arg, int base) +{ + unsigned long res; + char *ptr; + + if (!arg || !*arg) + return -1; + res = strtoul(arg, &ptr, base); + + if (!ptr || ptr == arg || *ptr) + return -1; + + if (res == ULONG_MAX && errno == ERANGE) + return -1; + + if (res > 0xFFFFUL) + return -1; + + *val = res; + return 0; +} + +static int get_u8(__u8 *val, const char *arg, int base) +{ + unsigned long res; + char *ptr; + + if (!arg || !*arg) + return -1; + res = strtoul(arg, &ptr, base); + + if (!ptr || ptr == arg || *ptr) + return -1; + + if (res == ULONG_MAX && errno == ERANGE) + return -1; + + if (res > 0xFFUL) + return -1; + + *val = res; + return 0; +} + +int main(int argc, char **argv) +{ + __u8 buffer[512], *ptr, nexthdr, tr_size; + struct ioam6_trace_hdr *trace; + unsigned int hoplen, ret = 1; + struct ipv6_hopopt_hdr *hbh; + int fd, size, testname_id; + struct in6_addr src, dst; + struct ioam6_hdr *ioam6; + struct timeval timeout; + struct ipv6hdr *ipv6; + __u32 tr_type; + __u16 ioam_ns; + + if (argc != 9) + goto out; + + testname_id = str2id(argv[2]); + + if (testname_id < 0 || + inet_pton(AF_INET6, argv[3], &src) != 1 || + inet_pton(AF_INET6, argv[4], &dst) != 1 || + get_u32(&tr_type, argv[5], 16) || + get_u8(&tr_size, argv[6], 0) || + get_u16(&ioam_ns, argv[7], 0)) + goto out; + + nexthdr = (!strcmp(argv[8], "encap") ? IPPROTO_IPV6 : IPPROTO_ICMPV6); + + hoplen = sizeof(*hbh); + hoplen += 2; // 2-byte padding for alignment + hoplen += sizeof(*ioam6); // IOAM option header + hoplen += sizeof(*trace); // IOAM trace header + hoplen += tr_size; // IOAM trace size + hoplen += (tr_size % 8); // optional padding + + fd = socket(AF_PACKET, SOCK_DGRAM, __cpu_to_be16(ETH_P_IPV6)); + if (fd < 0) + goto out; + + if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, + argv[1], strlen(argv[1]))) + goto close; + + timeout.tv_sec = 1; + timeout.tv_usec = 0; + if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, + (const char *)&timeout, sizeof(timeout))) + goto close; +recv: + size = recv(fd, buffer, sizeof(buffer), 0); + if (size <= 0) + goto close; + + ipv6 = (struct ipv6hdr *)buffer; + + /* Skip packets that do not have the expected src/dst address or that + * do not have a Hop-by-hop. + */ + if (!ipv6_addr_equal(&ipv6->saddr, &src) || + !ipv6_addr_equal(&ipv6->daddr, &dst) || + ipv6->nexthdr != IPPROTO_HOPOPTS) + goto recv; + + /* Check Hbh's Next Header and Size. */ + hbh = (struct ipv6_hopopt_hdr *)(buffer + sizeof(*ipv6)); + if (hbh->nexthdr != nexthdr || hbh->hdrlen != (hoplen >> 3) - 1) + goto close; + + /* Check we have a 2-byte padding for alignment. */ + ptr = (__u8 *)hbh + sizeof(*hbh); + if (ptr[0] != IPV6_TLV_PADN && ptr[1] != 0) + goto close; + + /* Check we now have the IOAM option. */ + ptr += 2; + if (ptr[0] != IPV6_TLV_IOAM) + goto close; + + /* Check its size and the IOAM option type. */ + ioam6 = (struct ioam6_hdr *)ptr; + if (ioam6->opt_len != sizeof(*ioam6) - 2 + sizeof(*trace) + tr_size || + ioam6->type != IOAM6_TYPE_PREALLOC) + goto close; + + trace = (struct ioam6_trace_hdr *)(ptr + sizeof(*ioam6)); + + /* Check the trailing 4-byte padding (potentially). */ + ptr = (__u8 *)trace + sizeof(*trace) + tr_size; + if (tr_size % 8 && ptr[0] != IPV6_TLV_PADN && ptr[1] != 2 && + ptr[2] != 0 && ptr[3] != 0) + goto close; + + /* Check the IOAM header and data. */ + ret = check_ioam_trace(testname_id, trace, tr_type, tr_size, ioam_ns); +close: + close(fd); +out: + return ret; +} -- cgit v1.2.3 From 3d07b691ee707c00afaf365440975e81bb96cd9b Mon Sep 17 00:00:00 2001 From: Mahesh Bandewar Date: Thu, 3 Oct 2024 03:15:06 -0700 Subject: selftest/ptp: update ptp selftest to exercise the gettimex options With the inclusion of commit c259acab839e ("ptp/ioctl: support MONOTONIC{,_RAW} timestamps for PTP_SYS_OFFSET_EXTENDED") clock_gettime() now allows retrieval of pre/post timestamps for CLOCK_MONOTONIC and CLOCK_MONOTONIC_RAW timebases along with the previously supported CLOCK_REALTIME. This patch adds a command line option 'y' to the testptp program to choose one of the allowed timebases [realtime aka system, monotonic, and monotonic-raw). Signed-off-by: Mahesh Bandewar Cc: Shuah Khan Acked-by: Richard Cochran Link: https://patch.msgid.link/20241003101506.769418-1-maheshb@google.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/ptp/testptp.c | 62 ++++++++++++++++++++++++++++++++--- 1 file changed, 57 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c index 011252fe238c..58064151f2c8 100644 --- a/tools/testing/selftests/ptp/testptp.c +++ b/tools/testing/selftests/ptp/testptp.c @@ -146,6 +146,7 @@ static void usage(char *progname) " -T val set the ptp clock time to 'val' seconds\n" " -x val get an extended ptp clock time with the desired number of samples (up to %d)\n" " -X get a ptp clock cross timestamp\n" + " -y val pre/post tstamp timebase to use {realtime|monotonic|monotonic-raw}\n" " -z test combinations of rising/falling external time stamp flags\n", progname, PTP_MAX_SAMPLES); } @@ -189,6 +190,7 @@ int main(int argc, char *argv[]) int seconds = 0; int settime = 0; int channel = -1; + clockid_t ext_clockid = CLOCK_REALTIME; int64_t t1, t2, tp; int64_t interval, offset; @@ -198,7 +200,7 @@ int main(int argc, char *argv[]) progname = strrchr(argv[0], '/'); progname = progname ? 1+progname : argv[0]; - while (EOF != (c = getopt(argc, argv, "cd:e:f:F:ghH:i:k:lL:n:o:p:P:sSt:T:w:x:Xz"))) { + while (EOF != (c = getopt(argc, argv, "cd:e:f:F:ghH:i:k:lL:n:o:p:P:sSt:T:w:x:Xy:z"))) { switch (c) { case 'c': capabilities = 1; @@ -278,6 +280,21 @@ int main(int argc, char *argv[]) case 'X': getcross = 1; break; + case 'y': + if (!strcasecmp(optarg, "realtime")) + ext_clockid = CLOCK_REALTIME; + else if (!strcasecmp(optarg, "monotonic")) + ext_clockid = CLOCK_MONOTONIC; + else if (!strcasecmp(optarg, "monotonic-raw")) + ext_clockid = CLOCK_MONOTONIC_RAW; + else { + fprintf(stderr, + "type needs to be realtime, monotonic or monotonic-raw; was given %s\n", + optarg); + return -1; + } + break; + case 'z': flagtest = 1; break; @@ -566,6 +583,7 @@ int main(int argc, char *argv[]) } soe->n_samples = getextended; + soe->clockid = ext_clockid; if (ioctl(fd, PTP_SYS_OFFSET_EXTENDED, soe)) { perror("PTP_SYS_OFFSET_EXTENDED"); @@ -574,12 +592,46 @@ int main(int argc, char *argv[]) getextended); for (i = 0; i < getextended; i++) { - printf("sample #%2d: system time before: %lld.%09u\n", - i, soe->ts[i][0].sec, soe->ts[i][0].nsec); + switch (ext_clockid) { + case CLOCK_REALTIME: + printf("sample #%2d: real time before: %lld.%09u\n", + i, soe->ts[i][0].sec, + soe->ts[i][0].nsec); + break; + case CLOCK_MONOTONIC: + printf("sample #%2d: monotonic time before: %lld.%09u\n", + i, soe->ts[i][0].sec, + soe->ts[i][0].nsec); + break; + case CLOCK_MONOTONIC_RAW: + printf("sample #%2d: monotonic-raw time before: %lld.%09u\n", + i, soe->ts[i][0].sec, + soe->ts[i][0].nsec); + break; + default: + break; + } printf(" phc time: %lld.%09u\n", soe->ts[i][1].sec, soe->ts[i][1].nsec); - printf(" system time after: %lld.%09u\n", - soe->ts[i][2].sec, soe->ts[i][2].nsec); + switch (ext_clockid) { + case CLOCK_REALTIME: + printf(" real time after: %lld.%09u\n", + soe->ts[i][2].sec, + soe->ts[i][2].nsec); + break; + case CLOCK_MONOTONIC: + printf(" monotonic time after: %lld.%09u\n", + soe->ts[i][2].sec, + soe->ts[i][2].nsec); + break; + case CLOCK_MONOTONIC_RAW: + printf(" monotonic-raw time after: %lld.%09u\n", + soe->ts[i][2].sec, + soe->ts[i][2].nsec); + break; + default: + break; + } } } -- cgit v1.2.3 From f858cc9eed5b05cbe38d7ffd2787c21e3718eb7d Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 3 Oct 2024 12:12:18 +0000 Subject: net: add IFLA_MAX_PACING_OFFLOAD_HORIZON device attribute Some network devices have the ability to offload EDT (Earliest Departure Time) which is the model used for TCP pacing and FQ packet scheduler. Some of them implement the timing wheel mechanism described in https://saeed.github.io/files/carousel-sigcomm17.pdf with an associated 'timing wheel horizon'. This patch adds dev->max_pacing_offload_horizon expressing this timing wheel horizon in nsec units. This is a read-only attribute. Unless a driver sets it, dev->max_pacing_offload_horizon is zero. v2: addressed Jakub feedback ( https://lore.kernel.org/netdev/20240930152304.472767-2-edumazet@google.com/T/#mf6294d714c41cc459962154cc2580ce3c9693663 ) v3: added yaml doc (also per Jakub feedback) Signed-off-by: Eric Dumazet Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20241003121219.2396589-2-edumazet@google.com Signed-off-by: Jakub Kicinski --- tools/include/uapi/linux/if_link.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h index f0d71b2a3f1e..96ec2b01e725 100644 --- a/tools/include/uapi/linux/if_link.h +++ b/tools/include/uapi/linux/if_link.h @@ -377,6 +377,7 @@ enum { IFLA_GSO_IPV4_MAX_SIZE, IFLA_GRO_IPV4_MAX_SIZE, IFLA_DPLL_PIN, + IFLA_MAX_PACING_OFFLOAD_HORIZON, __IFLA_MAX }; -- cgit v1.2.3 From cfb1ea216c1656a4112becbc4bf757891933b902 Mon Sep 17 00:00:00 2001 From: Gabriele Monaco Date: Thu, 26 Sep 2024 16:34:17 +0200 Subject: rtla: Fix consistency in getopt_long for timerlat_hist Commit e9a4062e1527 ("rtla: Add --trace-buffer-size option") adds a new long option to rtla utilities, but among all affected files, timerlat_hist misses a trailing `:` in the corresponding short option inside the getopt string (e.g. `\3:`). This patch propagates the `:`. Although this change is not functionally required, it improves consistency and slightly reduces the likelihood a future change would introduce a problem. Cc: John Kacur Cc: Luis Goncalves Cc: Tomas Glozar Link: https://lore.kernel.org/20240926143417.54039-1-gmonaco@redhat.com Signed-off-by: Gabriele Monaco Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/timerlat_hist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c index a3907c390d67..1f9137c592f4 100644 --- a/tools/tracing/rtla/src/timerlat_hist.c +++ b/tools/tracing/rtla/src/timerlat_hist.c @@ -778,7 +778,7 @@ static struct timerlat_hist_params /* getopt_long stores the option index here. */ int option_index = 0; - c = getopt_long(argc, argv, "a:c:C::b:d:e:E:DhH:i:knp:P:s:t::T:uU0123456:7:8:9\1\2:\3", + c = getopt_long(argc, argv, "a:c:C::b:d:e:E:DhH:i:knp:P:s:t::T:uU0123456:7:8:9\1\2:\3:", long_options, &option_index); /* detect the end of the options. */ -- cgit v1.2.3 From 21e92806d39c68af2accd1fb238c2daecfcf9fbd Mon Sep 17 00:00:00 2001 From: Donglin Peng Date: Sat, 14 Sep 2024 20:29:12 -0700 Subject: function_graph: Support recording and printing the function return address When using function_graph tracer to analyze the flow of kernel function execution, it is often necessary to quickly locate the exact line of code where the call occurs. While this may be easy at times, it can be more time-consuming when some functions are inlined or the flow is too long. This feature aims to simplify the process by recording the return address of traced funcions and printing it when outputing trace logs. To enhance human readability, the prefix 'ret=' is used for the kernel return value, while '<-' serves as the prefix for the return address in trace logs to make it look more like the function tracer. A new trace option named 'funcgraph-retaddr' has been introduced, and the existing option 'sym-addr' can be used to control the format of the return address. See below logs with both funcgraph-retval and funcgraph-retaddr enabled. 0) | load_elf_binary() { /* <-bprm_execve+0x249/0x600 */ 0) | load_elf_phdrs() { /* <-load_elf_binary+0x84/0x1730 */ 0) | __kmalloc_noprof() { /* <-load_elf_phdrs+0x4a/0xb0 */ 0) 3.657 us | __cond_resched(); /* <-__kmalloc_noprof+0x28c/0x390 ret=0x0 */ 0) + 24.335 us | } /* __kmalloc_noprof ret=0xffff8882007f3000 */ 0) | kernel_read() { /* <-load_elf_phdrs+0x6c/0xb0 */ 0) | rw_verify_area() { /* <-kernel_read+0x2b/0x50 */ 0) | security_file_permission() { /* <-kernel_read+0x2b/0x50 */ 0) | selinux_file_permission() { /* <-security_file_permission+0x26/0x40 */ 0) | __inode_security_revalidate() { /* <-selinux_file_permission+0x6d/0x140 */ 0) 2.034 us | __cond_resched(); /* <-__inode_security_revalidate+0x5f/0x80 ret=0x0 */ 0) 6.602 us | } /* __inode_security_revalidate ret=0x0 */ 0) 2.214 us | avc_policy_seqno(); /* <-selinux_file_permission+0x107/0x140 ret=0x0 */ 0) + 16.670 us | } /* selinux_file_permission ret=0x0 */ 0) + 20.809 us | } /* security_file_permission ret=0x0 */ 0) + 25.217 us | } /* rw_verify_area ret=0x0 */ 0) | __kernel_read() { /* <-load_elf_phdrs+0x6c/0xb0 */ 0) | ext4_file_read_iter() { /* <-__kernel_read+0x160/0x2e0 */ Then, we can use the faddr2line to locate the source code, for example: $ ./scripts/faddr2line ./vmlinux load_elf_phdrs+0x6c/0xb0 load_elf_phdrs+0x6c/0xb0: elf_read at fs/binfmt_elf.c:471 (inlined by) load_elf_phdrs at fs/binfmt_elf.c:531 Link: https://lore.kernel.org/20240915032912.1118397-1-dolinux.peng@gmail.com Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202409150605.HgUmU8ea-lkp@intel.com/ Signed-off-by: Donglin Peng [ Rebased to handle text_delta offsets ] Signed-off-by: Steven Rostedt (Google) --- tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc index e34c0bdef3ed..e8e46378b88d 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc @@ -29,7 +29,7 @@ set -e : "Test printing the error code in signed decimal format" echo 0 > options/funcgraph-retval-hex -count=`cat trace | grep 'proc_reg_write' | grep '= -5' | wc -l` +count=`cat trace | grep 'proc_reg_write' | grep '=-5' | wc -l` if [ $count -eq 0 ]; then fail "Return value can not be printed in signed decimal format" fi -- cgit v1.2.3 From 2688d6814193f81b0b4f9704a44963ebd755182f Mon Sep 17 00:00:00 2001 From: Hariharan Mari Date: Fri, 23 Aug 2024 15:05:04 +0200 Subject: KVM: s390: selftests: Add regression tests for SORTL and DFLTCC CPU subfunctions Introduce new regression tests to verify the ASM inline block in the SORTL and DFLTCC CPU subfunctions for the s390x architecture. These tests ensure that future changes to the ASM code are properly validated. The test procedure: 1. Create a VM and request the KVM_S390_VM_CPU_MACHINE_SUBFUNC attribute from the KVM_S390_VM_CPU_MODEL group for this VM. This SUBFUNC attribute contains the results of all CPU subfunction instructions. 2. For each tested subfunction (SORTL and DFLTCC), execute the corresponding ASM instruction and capture the result array. 3. Perform a memory comparison between the results stored in the SUBFUNC attribute (obtained in step 1) and the ASM instruction results (obtained in step 2) for each tested subfunction. This process ensures that the KVM implementation accurately reflects the behavior of the actual CPU instructions for the tested subfunctions. Suggested-by: Janosch Frank Signed-off-by: Hariharan Mari Reviewed-by: Janosch Frank Reviewed-by: Christoph Schlameuss Link: https://lore.kernel.org/r/20240823130947.38323-2-hari55@linux.ibm.com Signed-off-by: Janosch Frank Message-ID: <20240823130947.38323-2-hari55@linux.ibm.com> --- tools/testing/selftests/kvm/Makefile | 2 + .../testing/selftests/kvm/include/s390x/facility.h | 50 ++++++++++ tools/testing/selftests/kvm/lib/s390x/facility.c | 14 +++ .../selftests/kvm/s390x/cpumodel_subfuncs_test.c | 105 +++++++++++++++++++++ 4 files changed, 171 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/s390x/facility.h create mode 100644 tools/testing/selftests/kvm/lib/s390x/facility.c create mode 100644 tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c (limited to 'tools') diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 960cf6a77198..46b647b6b976 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -55,6 +55,7 @@ LIBKVM_aarch64 += lib/aarch64/vgic.c LIBKVM_s390x += lib/s390x/diag318_test_handler.c LIBKVM_s390x += lib/s390x/processor.c LIBKVM_s390x += lib/s390x/ucall.c +LIBKVM_s390x += lib/s390x/facility.c LIBKVM_riscv += lib/riscv/handlers.S LIBKVM_riscv += lib/riscv/processor.c @@ -189,6 +190,7 @@ TEST_GEN_PROGS_s390x += s390x/sync_regs_test TEST_GEN_PROGS_s390x += s390x/tprot TEST_GEN_PROGS_s390x += s390x/cmma_test TEST_GEN_PROGS_s390x += s390x/debug_test +TEST_GEN_PROGS_s390x += s390x/cpumodel_subfuncs_test TEST_GEN_PROGS_s390x += s390x/shared_zeropage_test TEST_GEN_PROGS_s390x += s390x/ucontrol_test TEST_GEN_PROGS_s390x += demand_paging_test diff --git a/tools/testing/selftests/kvm/include/s390x/facility.h b/tools/testing/selftests/kvm/include/s390x/facility.h new file mode 100644 index 000000000000..00a1ced6538b --- /dev/null +++ b/tools/testing/selftests/kvm/include/s390x/facility.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright IBM Corp. 2024 + * + * Authors: + * Hariharan Mari + * + * Get the facility bits with the STFLE instruction + */ + +#ifndef SELFTEST_KVM_FACILITY_H +#define SELFTEST_KVM_FACILITY_H + +#include + +/* alt_stfle_fac_list[16] + stfle_fac_list[16] */ +#define NB_STFL_DOUBLEWORDS 32 + +extern uint64_t stfl_doublewords[NB_STFL_DOUBLEWORDS]; +extern bool stfle_flag; + +static inline bool test_bit_inv(unsigned long nr, const unsigned long *ptr) +{ + return test_bit(nr ^ (BITS_PER_LONG - 1), ptr); +} + +static inline void stfle(uint64_t *fac, unsigned int nb_doublewords) +{ + register unsigned long r0 asm("0") = nb_doublewords - 1; + + asm volatile(" .insn s,0xb2b00000,0(%1)\n" + : "+d" (r0) + : "a" (fac) + : "memory", "cc"); +} + +static inline void setup_facilities(void) +{ + stfle(stfl_doublewords, NB_STFL_DOUBLEWORDS); + stfle_flag = true; +} + +static inline bool test_facility(int nr) +{ + if (!stfle_flag) + setup_facilities(); + return test_bit_inv(nr, stfl_doublewords); +} + +#endif diff --git a/tools/testing/selftests/kvm/lib/s390x/facility.c b/tools/testing/selftests/kvm/lib/s390x/facility.c new file mode 100644 index 000000000000..d540812d911a --- /dev/null +++ b/tools/testing/selftests/kvm/lib/s390x/facility.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright IBM Corp. 2024 + * + * Authors: + * Hariharan Mari + * + * Contains the definition for the global variables to have the test facitlity feature. + */ + +#include "facility.h" + +uint64_t stfl_doublewords[NB_STFL_DOUBLEWORDS]; +bool stfle_flag; diff --git a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c new file mode 100644 index 000000000000..ee525c841767 --- /dev/null +++ b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright IBM Corp. 2024 + * + * Authors: + * Hariharan Mari + * + * The tests compare the result of the KVM ioctl for obtaining CPU subfunction data with those + * from an ASM block performing the same CPU subfunction. Currently KVM doesn't mask instruction + * query data reported via the CPU Model, allowing us to directly compare it with the data + * acquired through executing the queries in the test. + */ + +#include +#include +#include +#include +#include "facility.h" + +#include "kvm_util.h" + +/* Query available CPU subfunctions */ +struct kvm_s390_vm_cpu_subfunc cpu_subfunc; + +static void get_cpu_machine_subfuntions(struct kvm_vm *vm, + struct kvm_s390_vm_cpu_subfunc *cpu_subfunc) +{ + int r; + + r = __kvm_device_attr_get(vm->fd, KVM_S390_VM_CPU_MODEL, + KVM_S390_VM_CPU_MACHINE_SUBFUNC, cpu_subfunc); + + TEST_ASSERT(!r, "Get cpu subfunctions failed r=%d errno=%d", r, errno); +} + +/* Testing Sort Lists (SORTL) CPU subfunction's ASM block */ +static void test_sortl_asm_block(u8 (*query)[32]) +{ + asm volatile(" lghi 0,0\n" + " la 1,%[query]\n" + " .insn rre,0xb9380000,2,4\n" + : [query] "=R" (*query) + : + : "cc", "0", "1"); +} + +/* Testing Deflate Conversion Call (DFLTCC) CPU subfunction's ASM block */ +static void test_dfltcc_asm_block(u8 (*query)[32]) +{ + asm volatile(" lghi 0,0\n" + " la 1,%[query]\n" + " .insn rrf,0xb9390000,2,4,6,0\n" + : [query] "=R" (*query) + : + : "cc", "0", "1"); +} + +typedef void (*testfunc_t)(u8 (*array)[]); + +struct testdef { + const char *subfunc_name; + u8 *subfunc_array; + size_t array_size; + testfunc_t test; + int facility_bit; +} testlist[] = { + /* SORTL - Facility bit 150 */ + { "SORTL", cpu_subfunc.sortl, sizeof(cpu_subfunc.sortl), test_sortl_asm_block, 150 }, + /* DFLTCC - Facility bit 151 */ + { "DFLTCC", cpu_subfunc.dfltcc, sizeof(cpu_subfunc.dfltcc), test_dfltcc_asm_block, 151 }, +}; + +int main(int argc, char *argv[]) +{ + struct kvm_vm *vm; + int idx; + + ksft_print_header(); + + vm = vm_create(1); + + memset(&cpu_subfunc, 0, sizeof(cpu_subfunc)); + get_cpu_machine_subfuntions(vm, &cpu_subfunc); + + ksft_set_plan(ARRAY_SIZE(testlist)); + for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) { + if (test_facility(testlist[idx].facility_bit)) { + u8 *array = malloc(testlist[idx].array_size); + + testlist[idx].test((u8 (*)[testlist[idx].array_size])array); + + TEST_ASSERT_EQ(memcmp(testlist[idx].subfunc_array, + array, testlist[idx].array_size), 0); + + ksft_test_result_pass("%s\n", testlist[idx].subfunc_name); + free(array); + } else { + ksft_test_result_skip("%s feature is not avaialable\n", + testlist[idx].subfunc_name); + } + } + + kvm_vm_free(vm); + ksft_finished(); +} -- cgit v1.2.3 From ff4cafc585e7554063ae2f301da208559ff9418f Mon Sep 17 00:00:00 2001 From: Hariharan Mari Date: Fri, 23 Aug 2024 15:05:05 +0200 Subject: KVM: s390: selftests: Add regression tests for PRNO, KDSA and KMA crypto subfunctions Extend the existing regression test framework for s390x CPU subfunctions to include tests for the PRNO (Perform Random Number Operation), KDSA (Compute Digital Signature Authentication) and KMA (Cipher Message with Authentication) crypto functions. The test procedure follows the established pattern: 1. Obtain KVM_S390_VM_CPU_MACHINE_SUBFUNC attribute for the VM. 2. Execute PRNO, KDSA and KMA instructions. 3. Compare KVM-reported results with direct instruction execution results. Suggested-by: Janosch Frank Signed-off-by: Hariharan Mari Reviewed-by: Janosch Frank Reviewed-by: Christoph Schlameuss Link: https://lore.kernel.org/r/20240823130947.38323-3-hari55@linux.ibm.com Signed-off-by: Janosch Frank Message-ID: <20240823130947.38323-3-hari55@linux.ibm.com> --- .../selftests/kvm/s390x/cpumodel_subfuncs_test.c | 39 ++++++++++++++++++++++ 1 file changed, 39 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c index ee525c841767..96e7ca07220f 100644 --- a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c +++ b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c @@ -33,6 +33,39 @@ static void get_cpu_machine_subfuntions(struct kvm_vm *vm, TEST_ASSERT(!r, "Get cpu subfunctions failed r=%d errno=%d", r, errno); } +/* Testing Crypto Perform Random Number Operation (PRNO) CPU subfunction's ASM block */ +static void test_prno_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb93c0000,2,4\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Cipher Message with Authentication (KMA) CPU subfunction's ASM block */ +static void test_kma_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rrf,0xb9290000,2,4,6,0\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Compute Digital Signature Authentication (KDSA) CPU subfunction's ASM block */ +static void test_kdsa_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb93a0000,0,2\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + /* Testing Sort Lists (SORTL) CPU subfunction's ASM block */ static void test_sortl_asm_block(u8 (*query)[32]) { @@ -64,6 +97,12 @@ struct testdef { testfunc_t test; int facility_bit; } testlist[] = { + /* MSA5 - Facility bit 57 */ + { "PPNO", cpu_subfunc.ppno, sizeof(cpu_subfunc.ppno), test_prno_asm_block, 57 }, + /* MSA8 - Facility bit 146 */ + { "KMA", cpu_subfunc.kma, sizeof(cpu_subfunc.kma), test_kma_asm_block, 146 }, + /* MSA9 - Facility bit 155 */ + { "KDSA", cpu_subfunc.kdsa, sizeof(cpu_subfunc.kdsa), test_kdsa_asm_block, 155 }, /* SORTL - Facility bit 150 */ { "SORTL", cpu_subfunc.sortl, sizeof(cpu_subfunc.sortl), test_sortl_asm_block, 150 }, /* DFLTCC - Facility bit 151 */ -- cgit v1.2.3 From 7f269dd22d51fc21c4a2a561cb93652c29f9863c Mon Sep 17 00:00:00 2001 From: Hariharan Mari Date: Fri, 23 Aug 2024 15:05:06 +0200 Subject: KVM: s390: selftests: Add regression tests for KMCTR, KMF, KMO and PCC crypto subfunctions Extend the existing regression test framework for s390x CPU subfunctions to include tests for the KMCTR (Cipher Message with Counter) KMO (Cipher Message with Output Feedback), KMF (Cipher Message with Cipher Feedback) and PCC (Perform Cryptographic Computation) crypto functions. The test procedure follows the established pattern. Suggested-by: Janosch Frank Signed-off-by: Hariharan Mari Reviewed-by: Janosch Frank Reviewed-by: Christoph Schlameuss Link: https://lore.kernel.org/r/20240823130947.38323-4-hari55@linux.ibm.com Signed-off-by: Janosch Frank Message-ID: <20240823130947.38323-4-hari55@linux.ibm.com> --- .../selftests/kvm/s390x/cpumodel_subfuncs_test.c | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c index 96e7ca07220f..28faceeaf089 100644 --- a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c +++ b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c @@ -33,6 +33,50 @@ static void get_cpu_machine_subfuntions(struct kvm_vm *vm, TEST_ASSERT(!r, "Get cpu subfunctions failed r=%d errno=%d", r, errno); } +/* Testing Crypto Cipher Message with Counter (KMCTR) CPU subfunction's ASM block */ +static void test_kmctr_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rrf,0xb92d0000,2,4,6,0\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Cipher Message with Cipher Feedback (KMF) CPU subfunction's ASM block */ +static void test_kmf_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb92a0000,2,4\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Cipher Message with Output Feedback (KMO) CPU subfunction's ASM block */ +static void test_kmo_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb92b0000,2,4\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Perform Cryptographic Computation (PCC) CPU subfunction's ASM block */ +static void test_pcc_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb92c0000,0,0\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + /* Testing Crypto Perform Random Number Operation (PRNO) CPU subfunction's ASM block */ static void test_prno_asm_block(u8 (*query)[16]) { @@ -97,6 +141,11 @@ struct testdef { testfunc_t test; int facility_bit; } testlist[] = { + /* MSA - Facility bit 77 */ + { "KMCTR", cpu_subfunc.kmctr, sizeof(cpu_subfunc.kmctr), test_kmctr_asm_block, 77 }, + { "KMF", cpu_subfunc.kmf, sizeof(cpu_subfunc.kmf), test_kmf_asm_block, 77 }, + { "KMO", cpu_subfunc.kmo, sizeof(cpu_subfunc.kmo), test_kmo_asm_block, 77 }, + { "PCC", cpu_subfunc.pcc, sizeof(cpu_subfunc.pcc), test_pcc_asm_block, 77 }, /* MSA5 - Facility bit 57 */ { "PPNO", cpu_subfunc.ppno, sizeof(cpu_subfunc.ppno), test_prno_asm_block, 57 }, /* MSA8 - Facility bit 146 */ -- cgit v1.2.3 From d1dbab52ebc2447c7aa623b8d677135a6b23e406 Mon Sep 17 00:00:00 2001 From: Hariharan Mari Date: Fri, 23 Aug 2024 15:05:07 +0200 Subject: KVM: s390: selftests: Add regression tests for KMAC, KMC, KM, KIMD and KLMD crypto subfunctions Extend the existing regression test framework for s390x CPU subfunctions to include tests for the KMAC (Compute Message Authentication Code), KMC (Cipher Message with Chaining), KM (Cipher Message) KIMD (Compute Intermediate Message Digest) and KLMD (Compute Last Message Digest) crypto functions. The test procedure follows the established pattern. Suggested-by: Janosch Frank Signed-off-by: Hariharan Mari Reviewed-by: Janosch Frank Reviewed-by: Christoph Schlameuss Link: https://lore.kernel.org/r/20240823130947.38323-5-hari55@linux.ibm.com Signed-off-by: Janosch Frank Message-ID: <20240823130947.38323-5-hari55@linux.ibm.com> --- .../selftests/kvm/s390x/cpumodel_subfuncs_test.c | 61 ++++++++++++++++++++++ 1 file changed, 61 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c index 28faceeaf089..fe45fb131583 100644 --- a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c +++ b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c @@ -33,6 +33,61 @@ static void get_cpu_machine_subfuntions(struct kvm_vm *vm, TEST_ASSERT(!r, "Get cpu subfunctions failed r=%d errno=%d", r, errno); } +/* Testing Crypto Compute Message Authentication Code (KMAC) CPU subfunction's ASM block */ +static void test_kmac_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb91e0000,0,2\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Cipher Message with Chaining (KMC) CPU subfunction's ASM block */ +static void test_kmc_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb92f0000,2,4\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Cipher Message (KM) CPU subfunction's ASM block */ +static void test_km_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb92e0000,2,4\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Compute Intermediate Message Digest (KIMD) CPU subfunction's ASM block */ +static void test_kimd_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb93e0000,0,2\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + +/* Testing Crypto Compute Last Message Digest (KLMD) CPU subfunction's ASM block */ +static void test_klmd_asm_block(u8 (*query)[16]) +{ + asm volatile(" la %%r1,%[query]\n" + " xgr %%r0,%%r0\n" + " .insn rre,0xb93f0000,0,2\n" + : [query] "=R" (*query) + : + : "cc", "r0", "r1"); +} + /* Testing Crypto Cipher Message with Counter (KMCTR) CPU subfunction's ASM block */ static void test_kmctr_asm_block(u8 (*query)[16]) { @@ -141,6 +196,12 @@ struct testdef { testfunc_t test; int facility_bit; } testlist[] = { + /* MSA - Facility bit 17 */ + { "KMAC", cpu_subfunc.kmac, sizeof(cpu_subfunc.kmac), test_kmac_asm_block, 17 }, + { "KMC", cpu_subfunc.kmc, sizeof(cpu_subfunc.kmc), test_kmc_asm_block, 17 }, + { "KM", cpu_subfunc.km, sizeof(cpu_subfunc.km), test_km_asm_block, 17 }, + { "KIMD", cpu_subfunc.kimd, sizeof(cpu_subfunc.kimd), test_kimd_asm_block, 17 }, + { "KLMD", cpu_subfunc.klmd, sizeof(cpu_subfunc.klmd), test_klmd_asm_block, 17 }, /* MSA - Facility bit 77 */ { "KMCTR", cpu_subfunc.kmctr, sizeof(cpu_subfunc.kmctr), test_kmctr_asm_block, 77 }, { "KMF", cpu_subfunc.kmf, sizeof(cpu_subfunc.kmf), test_kmf_asm_block, 77 }, -- cgit v1.2.3 From 75ec613efa257a43663232b2aa46d1737395bb73 Mon Sep 17 00:00:00 2001 From: Hariharan Mari Date: Fri, 23 Aug 2024 15:05:08 +0200 Subject: KVM: s390: selftests: Add regression tests for PLO subfunctions Extend the existing regression test framework for s390x CPU subfunctions to include tests for the Perform Locked Operation (PLO) subfunction functions. PLO was introduced in the very first 64-bit machine generation. Hence it is assumed PLO is always installed in the Z Arch. The test procedure follows the established pattern. Suggested-by: Janosch Frank Signed-off-by: Hariharan Mari Reviewed-by: Janosch Frank Reviewed-by: Christoph Schlameuss Link: https://lore.kernel.org/r/20240823130947.38323-6-hari55@linux.ibm.com Signed-off-by: Janosch Frank Message-ID: <20240823130947.38323-6-hari55@linux.ibm.com> --- .../selftests/kvm/s390x/cpumodel_subfuncs_test.c | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c index fe45fb131583..222ba1cc3cac 100644 --- a/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c +++ b/tools/testing/selftests/kvm/s390x/cpumodel_subfuncs_test.c @@ -19,6 +19,8 @@ #include "kvm_util.h" +#define PLO_FUNCTION_MAX 256 + /* Query available CPU subfunctions */ struct kvm_s390_vm_cpu_subfunc cpu_subfunc; @@ -33,6 +35,31 @@ static void get_cpu_machine_subfuntions(struct kvm_vm *vm, TEST_ASSERT(!r, "Get cpu subfunctions failed r=%d errno=%d", r, errno); } +static inline int plo_test_bit(unsigned char nr) +{ + unsigned long function = nr | 0x100; + int cc; + + asm volatile(" lgr 0,%[function]\n" + /* Parameter registers are ignored for "test bit" */ + " plo 0,0,0,0(0)\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (cc) + : [function] "d" (function) + : "cc", "0"); + return cc == 0; +} + +/* Testing Perform Locked Operation (PLO) CPU subfunction's ASM block */ +static void test_plo_asm_block(u8 (*query)[32]) +{ + for (int i = 0; i < PLO_FUNCTION_MAX; ++i) { + if (plo_test_bit(i)) + (*query)[i >> 3] |= 0x80 >> (i & 7); + } +} + /* Testing Crypto Compute Message Authentication Code (KMAC) CPU subfunction's ASM block */ static void test_kmac_asm_block(u8 (*query)[16]) { @@ -196,6 +223,11 @@ struct testdef { testfunc_t test; int facility_bit; } testlist[] = { + /* + * PLO was introduced in the very first 64-bit machine generation. + * Hence it is assumed PLO is always installed in Z Arch. + */ + { "PLO", cpu_subfunc.plo, sizeof(cpu_subfunc.plo), test_plo_asm_block, 1 }, /* MSA - Facility bit 17 */ { "KMAC", cpu_subfunc.kmac, sizeof(cpu_subfunc.kmac), test_kmac_asm_block, 17 }, { "KMC", cpu_subfunc.kmc, sizeof(cpu_subfunc.kmc), test_kmc_asm_block, 17 }, -- cgit v1.2.3 From 711b5875814b2a0e9a5aaf7a85ba7c80f5a389b1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= Date: Fri, 27 Sep 2024 18:45:38 +0200 Subject: tools/nolibc: s390: include std.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit arch-s390.h uses types from std.h, but does not include it. Depending on the inclusion order the compilation can fail. Include std.h explicitly to avoid these errors. Fixes: 404fa87c0eaf ("tools/nolibc: s390: provide custom implementation for sys_fork") Cc: stable@vger.kernel.org Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20240927-nolibc-s390-std-h-v1-1-30442339a6b9@linutronix.de Signed-off-by: Thomas Weißschuh --- tools/include/nolibc/arch-s390.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/include/nolibc/arch-s390.h b/tools/include/nolibc/arch-s390.h index 2ec13d8b9a2d..f9ab83a219b8 100644 --- a/tools/include/nolibc/arch-s390.h +++ b/tools/include/nolibc/arch-s390.h @@ -10,6 +10,7 @@ #include "compiler.h" #include "crt.h" +#include "std.h" /* Syscalls for s390: * - registers are 64-bit -- cgit v1.2.3 From 079ec6a3cf529d86c2895059eb8be1b36cc9fd72 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= Date: Mon, 30 Sep 2024 07:35:19 +0200 Subject: tools/nolibc: compiler: add macro __nolibc_fallthrough MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Recent version of GCC and clang gained -Wimplicit-fallthrough, warning about implicit fall-through between switch labels. As nolibc does not control the compilation flags, this can trigger warnings for when built by the user. Make use of the "fallthrough" attribute to explicitly annotate the expected fall-throughs and silence the warning. Link: https://lore.kernel.org/r/20240930-nolibc-fallthrough-v2-1-2e8d10fe3430@weissschuh.net Signed-off-by: Thomas Weißschuh --- tools/include/nolibc/compiler.h | 6 ++++++ tools/include/nolibc/stdio.h | 3 ++- 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/include/nolibc/compiler.h b/tools/include/nolibc/compiler.h index 9bc6a706a332..fa1f547e7f13 100644 --- a/tools/include/nolibc/compiler.h +++ b/tools/include/nolibc/compiler.h @@ -32,4 +32,10 @@ # define __no_stack_protector __attribute__((__optimize__("-fno-stack-protector"))) #endif /* __nolibc_has_attribute(no_stack_protector) */ +#if __nolibc_has_attribute(fallthrough) +# define __nolibc_fallthrough do { } while (0); __attribute__((fallthrough)) +#else +# define __nolibc_fallthrough do { } while (0) +#endif /* __nolibc_has_attribute(fallthrough) */ + #endif /* _NOLIBC_COMPILER_H */ diff --git a/tools/include/nolibc/stdio.h b/tools/include/nolibc/stdio.h index c968dbbc4ef8..3892034198dd 100644 --- a/tools/include/nolibc/stdio.h +++ b/tools/include/nolibc/stdio.h @@ -15,6 +15,7 @@ #include "stdarg.h" #include "stdlib.h" #include "string.h" +#include "compiler.h" #ifndef EOF #define EOF (-1) @@ -264,7 +265,7 @@ int vfprintf(FILE *stream, const char *fmt, va_list args) case 'p': *(out++) = '0'; *(out++) = 'x'; - /* fall through */ + __nolibc_fallthrough; default: /* 'x' and 'p' above */ u64toh_r(v, out); break; -- cgit v1.2.3 From ad0558f3883130954ca724697f2d19aef93967b3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= Date: Mon, 7 Oct 2024 10:10:55 +0200 Subject: selftests/nolibc: start qemu with 1 GiB of memory MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Recently the loongarch defconfig stopped working with the default 128 MiB of memory. The VM just spins infinitively. Increasing the available memory to 1 GiB, similar to s390, fixes the issue. To avoid having to do this for each architecture on its own, proactively apply to all architectures. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20241007-nolibc-qemu-mem-v1-1-c1c2f9acd0f8@linutronix.de Signed-off-by: Thomas Weißschuh --- tools/testing/selftests/nolibc/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile index 8de98ea7af80..e92e0b885861 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -130,9 +130,9 @@ QEMU_ARGS_ppc = -M g3beige -append "console=ttyS0 panic=-1 $(TEST:%=NOLIB QEMU_ARGS_ppc64 = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_ppc64le = -M powernv -append "console=hvc0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_riscv = -M virt -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" -QEMU_ARGS_s390 = -M s390-ccw-virtio -m 1G -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" +QEMU_ARGS_s390 = -M s390-ccw-virtio -append "console=ttyS0 panic=-1 $(TEST:%=NOLIBC_TEST=%)" QEMU_ARGS_loongarch = -M virt -append "console=ttyS0,115200 panic=-1 $(TEST:%=NOLIBC_TEST=%)" -QEMU_ARGS = $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA) +QEMU_ARGS = -m 1G $(QEMU_ARGS_$(XARCH)) $(QEMU_ARGS_BIOS) $(QEMU_ARGS_EXTRA) # OUTPUT is only set when run from the main makefile, otherwise # it defaults to this nolibc directory. -- cgit v1.2.3 From 107525833bcedb9d7c2c6a21abb8b9747410f364 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Fri, 4 Oct 2024 12:13:34 +0200 Subject: tools: Sync if_link.h uapi tooling header Sync if_link uapi header to the latest version as we need the refresher in tooling for netkit device. Given it's been a while since the last sync and the diff is fairly big, it has been done as its own commit. Signed-off-by: Daniel Borkmann Acked-by: Nikolay Aleksandrov Link: https://lore.kernel.org/r/20241004101335.117711-4-daniel@iogearbox.net Signed-off-by: Martin KaFai Lau --- tools/include/uapi/linux/if_link.h | 553 ++++++++++++++++++++++++++++++++++++- 1 file changed, 552 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h index f0d71b2a3f1e..2acc7687e017 100644 --- a/tools/include/uapi/linux/if_link.h +++ b/tools/include/uapi/linux/if_link.h @@ -461,6 +461,286 @@ enum in6_addr_gen_mode { /* Bridge section */ +/** + * DOC: Bridge enum definition + * + * Please *note* that the timer values in the following section are expected + * in clock_t format, which is seconds multiplied by USER_HZ (generally + * defined as 100). + * + * @IFLA_BR_FORWARD_DELAY + * The bridge forwarding delay is the time spent in LISTENING state + * (before moving to LEARNING) and in LEARNING state (before moving + * to FORWARDING). Only relevant if STP is enabled. + * + * The valid values are between (2 * USER_HZ) and (30 * USER_HZ). + * The default value is (15 * USER_HZ). + * + * @IFLA_BR_HELLO_TIME + * The time between hello packets sent by the bridge, when it is a root + * bridge or a designated bridge. Only relevant if STP is enabled. + * + * The valid values are between (1 * USER_HZ) and (10 * USER_HZ). + * The default value is (2 * USER_HZ). + * + * @IFLA_BR_MAX_AGE + * The hello packet timeout is the time until another bridge in the + * spanning tree is assumed to be dead, after reception of its last hello + * message. Only relevant if STP is enabled. + * + * The valid values are between (6 * USER_HZ) and (40 * USER_HZ). + * The default value is (20 * USER_HZ). + * + * @IFLA_BR_AGEING_TIME + * Configure the bridge's FDB entries aging time. It is the time a MAC + * address will be kept in the FDB after a packet has been received from + * that address. After this time has passed, entries are cleaned up. + * Allow values outside the 802.1 standard specification for special cases: + * + * * 0 - entry never ages (all permanent) + * * 1 - entry disappears (no persistence) + * + * The default value is (300 * USER_HZ). + * + * @IFLA_BR_STP_STATE + * Turn spanning tree protocol on (*IFLA_BR_STP_STATE* > 0) or off + * (*IFLA_BR_STP_STATE* == 0) for this bridge. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_PRIORITY + * Set this bridge's spanning tree priority, used during STP root bridge + * election. + * + * The valid values are between 0 and 65535. + * + * @IFLA_BR_VLAN_FILTERING + * Turn VLAN filtering on (*IFLA_BR_VLAN_FILTERING* > 0) or off + * (*IFLA_BR_VLAN_FILTERING* == 0). When disabled, the bridge will not + * consider the VLAN tag when handling packets. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_VLAN_PROTOCOL + * Set the protocol used for VLAN filtering. + * + * The valid values are 0x8100(802.1Q) or 0x88A8(802.1AD). The default value + * is 0x8100(802.1Q). + * + * @IFLA_BR_GROUP_FWD_MASK + * The group forwarding mask. This is the bitmask that is applied to + * decide whether to forward incoming frames destined to link-local + * addresses (of the form 01:80:C2:00:00:0X). + * + * The default value is 0, which means the bridge does not forward any + * link-local frames coming on this port. + * + * @IFLA_BR_ROOT_ID + * The bridge root id, read only. + * + * @IFLA_BR_BRIDGE_ID + * The bridge id, read only. + * + * @IFLA_BR_ROOT_PORT + * The bridge root port, read only. + * + * @IFLA_BR_ROOT_PATH_COST + * The bridge root path cost, read only. + * + * @IFLA_BR_TOPOLOGY_CHANGE + * The bridge topology change, read only. + * + * @IFLA_BR_TOPOLOGY_CHANGE_DETECTED + * The bridge topology change detected, read only. + * + * @IFLA_BR_HELLO_TIMER + * The bridge hello timer, read only. + * + * @IFLA_BR_TCN_TIMER + * The bridge tcn timer, read only. + * + * @IFLA_BR_TOPOLOGY_CHANGE_TIMER + * The bridge topology change timer, read only. + * + * @IFLA_BR_GC_TIMER + * The bridge gc timer, read only. + * + * @IFLA_BR_GROUP_ADDR + * Set the MAC address of the multicast group this bridge uses for STP. + * The address must be a link-local address in standard Ethernet MAC address + * format. It is an address of the form 01:80:C2:00:00:0X, with X in [0, 4..f]. + * + * The default value is 0. + * + * @IFLA_BR_FDB_FLUSH + * Flush bridge's fdb dynamic entries. + * + * @IFLA_BR_MCAST_ROUTER + * Set bridge's multicast router if IGMP snooping is enabled. + * The valid values are: + * + * * 0 - disabled. + * * 1 - automatic (queried). + * * 2 - permanently enabled. + * + * The default value is 1. + * + * @IFLA_BR_MCAST_SNOOPING + * Turn multicast snooping on (*IFLA_BR_MCAST_SNOOPING* > 0) or off + * (*IFLA_BR_MCAST_SNOOPING* == 0). + * + * The default value is 1. + * + * @IFLA_BR_MCAST_QUERY_USE_IFADDR + * If enabled use the bridge's own IP address as source address for IGMP + * queries (*IFLA_BR_MCAST_QUERY_USE_IFADDR* > 0) or the default of 0.0.0.0 + * (*IFLA_BR_MCAST_QUERY_USE_IFADDR* == 0). + * + * The default value is 0 (disabled). + * + * @IFLA_BR_MCAST_QUERIER + * Enable (*IFLA_BR_MULTICAST_QUERIER* > 0) or disable + * (*IFLA_BR_MULTICAST_QUERIER* == 0) IGMP querier, ie sending of multicast + * queries by the bridge. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_MCAST_HASH_ELASTICITY + * Set multicast database hash elasticity, It is the maximum chain length in + * the multicast hash table. This attribute is *deprecated* and the value + * is always 16. + * + * @IFLA_BR_MCAST_HASH_MAX + * Set maximum size of the multicast hash table + * + * The default value is 4096, the value must be a power of 2. + * + * @IFLA_BR_MCAST_LAST_MEMBER_CNT + * The Last Member Query Count is the number of Group-Specific Queries + * sent before the router assumes there are no local members. The Last + * Member Query Count is also the number of Group-and-Source-Specific + * Queries sent before the router assumes there are no listeners for a + * particular source. + * + * The default value is 2. + * + * @IFLA_BR_MCAST_STARTUP_QUERY_CNT + * The Startup Query Count is the number of Queries sent out on startup, + * separated by the Startup Query Interval. + * + * The default value is 2. + * + * @IFLA_BR_MCAST_LAST_MEMBER_INTVL + * The Last Member Query Interval is the Max Response Time inserted into + * Group-Specific Queries sent in response to Leave Group messages, and + * is also the amount of time between Group-Specific Query messages. + * + * The default value is (1 * USER_HZ). + * + * @IFLA_BR_MCAST_MEMBERSHIP_INTVL + * The interval after which the bridge will leave a group, if no membership + * reports for this group are received. + * + * The default value is (260 * USER_HZ). + * + * @IFLA_BR_MCAST_QUERIER_INTVL + * The interval between queries sent by other routers. if no queries are + * seen after this delay has passed, the bridge will start to send its own + * queries (as if *IFLA_BR_MCAST_QUERIER_INTVL* was enabled). + * + * The default value is (255 * USER_HZ). + * + * @IFLA_BR_MCAST_QUERY_INTVL + * The Query Interval is the interval between General Queries sent by + * the Querier. + * + * The default value is (125 * USER_HZ). The minimum value is (1 * USER_HZ). + * + * @IFLA_BR_MCAST_QUERY_RESPONSE_INTVL + * The Max Response Time used to calculate the Max Resp Code inserted + * into the periodic General Queries. + * + * The default value is (10 * USER_HZ). + * + * @IFLA_BR_MCAST_STARTUP_QUERY_INTVL + * The interval between queries in the startup phase. + * + * The default value is (125 * USER_HZ) / 4. The minimum value is (1 * USER_HZ). + * + * @IFLA_BR_NF_CALL_IPTABLES + * Enable (*NF_CALL_IPTABLES* > 0) or disable (*NF_CALL_IPTABLES* == 0) + * iptables hooks on the bridge. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_NF_CALL_IP6TABLES + * Enable (*NF_CALL_IP6TABLES* > 0) or disable (*NF_CALL_IP6TABLES* == 0) + * ip6tables hooks on the bridge. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_NF_CALL_ARPTABLES + * Enable (*NF_CALL_ARPTABLES* > 0) or disable (*NF_CALL_ARPTABLES* == 0) + * arptables hooks on the bridge. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_VLAN_DEFAULT_PVID + * VLAN ID applied to untagged and priority-tagged incoming packets. + * + * The default value is 1. Setting to the special value 0 makes all ports of + * this bridge not have a PVID by default, which means that they will + * not accept VLAN-untagged traffic. + * + * @IFLA_BR_PAD + * Bridge attribute padding type for netlink message. + * + * @IFLA_BR_VLAN_STATS_ENABLED + * Enable (*IFLA_BR_VLAN_STATS_ENABLED* == 1) or disable + * (*IFLA_BR_VLAN_STATS_ENABLED* == 0) per-VLAN stats accounting. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_MCAST_STATS_ENABLED + * Enable (*IFLA_BR_MCAST_STATS_ENABLED* > 0) or disable + * (*IFLA_BR_MCAST_STATS_ENABLED* == 0) multicast (IGMP/MLD) stats + * accounting. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_MCAST_IGMP_VERSION + * Set the IGMP version. + * + * The valid values are 2 and 3. The default value is 2. + * + * @IFLA_BR_MCAST_MLD_VERSION + * Set the MLD version. + * + * The valid values are 1 and 2. The default value is 1. + * + * @IFLA_BR_VLAN_STATS_PER_PORT + * Enable (*IFLA_BR_VLAN_STATS_PER_PORT* == 1) or disable + * (*IFLA_BR_VLAN_STATS_PER_PORT* == 0) per-VLAN per-port stats accounting. + * Can be changed only when there are no port VLANs configured. + * + * The default value is 0 (disabled). + * + * @IFLA_BR_MULTI_BOOLOPT + * The multi_boolopt is used to control new boolean options to avoid adding + * new netlink attributes. You can look at ``enum br_boolopt_id`` for those + * options. + * + * @IFLA_BR_MCAST_QUERIER_STATE + * Bridge mcast querier states, read only. + * + * @IFLA_BR_FDB_N_LEARNED + * The number of dynamically learned FDB entries for the current bridge, + * read only. + * + * @IFLA_BR_FDB_MAX_LEARNED + * Set the number of max dynamically learned FDB entries for the current + * bridge. + */ enum { IFLA_BR_UNSPEC, IFLA_BR_FORWARD_DELAY, @@ -510,6 +790,8 @@ enum { IFLA_BR_VLAN_STATS_PER_PORT, IFLA_BR_MULTI_BOOLOPT, IFLA_BR_MCAST_QUERIER_STATE, + IFLA_BR_FDB_N_LEARNED, + IFLA_BR_FDB_MAX_LEARNED, __IFLA_BR_MAX, }; @@ -520,11 +802,252 @@ struct ifla_bridge_id { __u8 addr[6]; /* ETH_ALEN */ }; +/** + * DOC: Bridge mode enum definition + * + * @BRIDGE_MODE_HAIRPIN + * Controls whether traffic may be sent back out of the port on which it + * was received. This option is also called reflective relay mode, and is + * used to support basic VEPA (Virtual Ethernet Port Aggregator) + * capabilities. By default, this flag is turned off and the bridge will + * not forward traffic back out of the receiving port. + */ enum { BRIDGE_MODE_UNSPEC, BRIDGE_MODE_HAIRPIN, }; +/** + * DOC: Bridge port enum definition + * + * @IFLA_BRPORT_STATE + * The operation state of the port. Here are the valid values. + * + * * 0 - port is in STP *DISABLED* state. Make this port completely + * inactive for STP. This is also called BPDU filter and could be used + * to disable STP on an untrusted port, like a leaf virtual device. + * The traffic forwarding is also stopped on this port. + * * 1 - port is in STP *LISTENING* state. Only valid if STP is enabled + * on the bridge. In this state the port listens for STP BPDUs and + * drops all other traffic frames. + * * 2 - port is in STP *LEARNING* state. Only valid if STP is enabled on + * the bridge. In this state the port will accept traffic only for the + * purpose of updating MAC address tables. + * * 3 - port is in STP *FORWARDING* state. Port is fully active. + * * 4 - port is in STP *BLOCKING* state. Only valid if STP is enabled on + * the bridge. This state is used during the STP election process. + * In this state, port will only process STP BPDUs. + * + * @IFLA_BRPORT_PRIORITY + * The STP port priority. The valid values are between 0 and 255. + * + * @IFLA_BRPORT_COST + * The STP path cost of the port. The valid values are between 1 and 65535. + * + * @IFLA_BRPORT_MODE + * Set the bridge port mode. See *BRIDGE_MODE_HAIRPIN* for more details. + * + * @IFLA_BRPORT_GUARD + * Controls whether STP BPDUs will be processed by the bridge port. By + * default, the flag is turned off to allow BPDU processing. Turning this + * flag on will disable the bridge port if a STP BPDU packet is received. + * + * If the bridge has Spanning Tree enabled, hostile devices on the network + * may send BPDU on a port and cause network failure. Setting *guard on* + * will detect and stop this by disabling the port. The port will be + * restarted if the link is brought down, or removed and reattached. + * + * @IFLA_BRPORT_PROTECT + * Controls whether a given port is allowed to become a root port or not. + * Only used when STP is enabled on the bridge. By default the flag is off. + * + * This feature is also called root port guard. If BPDU is received from a + * leaf (edge) port, it should not be elected as root port. This could + * be used if using STP on a bridge and the downstream bridges are not fully + * trusted; this prevents a hostile guest from rerouting traffic. + * + * @IFLA_BRPORT_FAST_LEAVE + * This flag allows the bridge to immediately stop multicast traffic + * forwarding on a port that receives an IGMP Leave message. It is only used + * when IGMP snooping is enabled on the bridge. By default the flag is off. + * + * @IFLA_BRPORT_LEARNING + * Controls whether a given port will learn *source* MAC addresses from + * received traffic or not. Also controls whether dynamic FDB entries + * (which can also be added by software) will be refreshed by incoming + * traffic. By default this flag is on. + * + * @IFLA_BRPORT_UNICAST_FLOOD + * Controls whether unicast traffic for which there is no FDB entry will + * be flooded towards this port. By default this flag is on. + * + * @IFLA_BRPORT_PROXYARP + * Enable proxy ARP on this port. + * + * @IFLA_BRPORT_LEARNING_SYNC + * Controls whether a given port will sync MAC addresses learned on device + * port to bridge FDB. + * + * @IFLA_BRPORT_PROXYARP_WIFI + * Enable proxy ARP on this port which meets extended requirements by + * IEEE 802.11 and Hotspot 2.0 specifications. + * + * @IFLA_BRPORT_ROOT_ID + * + * @IFLA_BRPORT_BRIDGE_ID + * + * @IFLA_BRPORT_DESIGNATED_PORT + * + * @IFLA_BRPORT_DESIGNATED_COST + * + * @IFLA_BRPORT_ID + * + * @IFLA_BRPORT_NO + * + * @IFLA_BRPORT_TOPOLOGY_CHANGE_ACK + * + * @IFLA_BRPORT_CONFIG_PENDING + * + * @IFLA_BRPORT_MESSAGE_AGE_TIMER + * + * @IFLA_BRPORT_FORWARD_DELAY_TIMER + * + * @IFLA_BRPORT_HOLD_TIMER + * + * @IFLA_BRPORT_FLUSH + * Flush bridge ports' fdb dynamic entries. + * + * @IFLA_BRPORT_MULTICAST_ROUTER + * Configure the port's multicast router presence. A port with + * a multicast router will receive all multicast traffic. + * The valid values are: + * + * * 0 disable multicast routers on this port + * * 1 let the system detect the presence of routers (default) + * * 2 permanently enable multicast traffic forwarding on this port + * * 3 enable multicast routers temporarily on this port, not depending + * on incoming queries. + * + * @IFLA_BRPORT_PAD + * + * @IFLA_BRPORT_MCAST_FLOOD + * Controls whether a given port will flood multicast traffic for which + * there is no MDB entry. By default this flag is on. + * + * @IFLA_BRPORT_MCAST_TO_UCAST + * Controls whether a given port will replicate packets using unicast + * instead of multicast. By default this flag is off. + * + * This is done by copying the packet per host and changing the multicast + * destination MAC to a unicast one accordingly. + * + * *mcast_to_unicast* works on top of the multicast snooping feature of the + * bridge. Which means unicast copies are only delivered to hosts which + * are interested in unicast and signaled this via IGMP/MLD reports previously. + * + * This feature is intended for interface types which have a more reliable + * and/or efficient way to deliver unicast packets than broadcast ones + * (e.g. WiFi). + * + * However, it should only be enabled on interfaces where no IGMPv2/MLDv1 + * report suppression takes place. IGMP/MLD report suppression issue is + * usually overcome by the network daemon (supplicant) enabling AP isolation + * and by that separating all STAs. + * + * Delivery of STA-to-STA IP multicast is made possible again by enabling + * and utilizing the bridge hairpin mode, which considers the incoming port + * as a potential outgoing port, too (see *BRIDGE_MODE_HAIRPIN* option). + * Hairpin mode is performed after multicast snooping, therefore leading + * to only deliver reports to STAs running a multicast router. + * + * @IFLA_BRPORT_VLAN_TUNNEL + * Controls whether vlan to tunnel mapping is enabled on the port. + * By default this flag is off. + * + * @IFLA_BRPORT_BCAST_FLOOD + * Controls flooding of broadcast traffic on the given port. By default + * this flag is on. + * + * @IFLA_BRPORT_GROUP_FWD_MASK + * Set the group forward mask. This is a bitmask that is applied to + * decide whether to forward incoming frames destined to link-local + * addresses. The addresses of the form are 01:80:C2:00:00:0X (defaults + * to 0, which means the bridge does not forward any link-local frames + * coming on this port). + * + * @IFLA_BRPORT_NEIGH_SUPPRESS + * Controls whether neighbor discovery (arp and nd) proxy and suppression + * is enabled on the port. By default this flag is off. + * + * @IFLA_BRPORT_ISOLATED + * Controls whether a given port will be isolated, which means it will be + * able to communicate with non-isolated ports only. By default this + * flag is off. + * + * @IFLA_BRPORT_BACKUP_PORT + * Set a backup port. If the port loses carrier all traffic will be + * redirected to the configured backup port. Set the value to 0 to disable + * it. + * + * @IFLA_BRPORT_MRP_RING_OPEN + * + * @IFLA_BRPORT_MRP_IN_OPEN + * + * @IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT + * The number of per-port EHT hosts limit. The default value is 512. + * Setting to 0 is not allowed. + * + * @IFLA_BRPORT_MCAST_EHT_HOSTS_CNT + * The current number of tracked hosts, read only. + * + * @IFLA_BRPORT_LOCKED + * Controls whether a port will be locked, meaning that hosts behind the + * port will not be able to communicate through the port unless an FDB + * entry with the unit's MAC address is in the FDB. The common use case is + * that hosts are allowed access through authentication with the IEEE 802.1X + * protocol or based on whitelists. By default this flag is off. + * + * Please note that secure 802.1X deployments should always use the + * *BR_BOOLOPT_NO_LL_LEARN* flag, to not permit the bridge to populate its + * FDB based on link-local (EAPOL) traffic received on the port. + * + * @IFLA_BRPORT_MAB + * Controls whether a port will use MAC Authentication Bypass (MAB), a + * technique through which select MAC addresses may be allowed on a locked + * port, without using 802.1X authentication. Packets with an unknown source + * MAC address generates a "locked" FDB entry on the incoming bridge port. + * The common use case is for user space to react to these bridge FDB + * notifications and optionally replace the locked FDB entry with a normal + * one, allowing traffic to pass for whitelisted MAC addresses. + * + * Setting this flag also requires *IFLA_BRPORT_LOCKED* and + * *IFLA_BRPORT_LEARNING*. *IFLA_BRPORT_LOCKED* ensures that unauthorized + * data packets are dropped, and *IFLA_BRPORT_LEARNING* allows the dynamic + * FDB entries installed by user space (as replacements for the locked FDB + * entries) to be refreshed and/or aged out. + * + * @IFLA_BRPORT_MCAST_N_GROUPS + * + * @IFLA_BRPORT_MCAST_MAX_GROUPS + * Sets the maximum number of MDB entries that can be registered for a + * given port. Attempts to register more MDB entries at the port than this + * limit allows will be rejected, whether they are done through netlink + * (e.g. the bridge tool), or IGMP or MLD membership reports. Setting a + * limit of 0 disables the limit. The default value is 0. + * + * @IFLA_BRPORT_NEIGH_VLAN_SUPPRESS + * Controls whether neighbor discovery (arp and nd) proxy and suppression is + * enabled for a given port. By default this flag is off. + * + * Note that this option only takes effect when *IFLA_BRPORT_NEIGH_SUPPRESS* + * is enabled for a given port. + * + * @IFLA_BRPORT_BACKUP_NHID + * The FDB nexthop object ID to attach to packets being redirected to a + * backup port that has VLAN tunnel mapping enabled (via the + * *IFLA_BRPORT_VLAN_TUNNEL* option). Setting a value of 0 (default) has + * the effect of not attaching any ID. + */ enum { IFLA_BRPORT_UNSPEC, IFLA_BRPORT_STATE, /* Spanning tree state */ @@ -769,6 +1292,19 @@ enum netkit_mode { NETKIT_L3, }; +/* NETKIT_SCRUB_NONE leaves clearing skb->{mark,priority} up to + * the BPF program if attached. This also means the latter can + * consume the two fields if they were populated earlier. + * + * NETKIT_SCRUB_DEFAULT zeroes skb->{mark,priority} fields before + * invoking the attached BPF program when the peer device resides + * in a different network namespace. This is the default behavior. + */ +enum netkit_scrub { + NETKIT_SCRUB_NONE, + NETKIT_SCRUB_DEFAULT, +}; + enum { IFLA_NETKIT_UNSPEC, IFLA_NETKIT_PEER_INFO, @@ -776,6 +1312,8 @@ enum { IFLA_NETKIT_POLICY, IFLA_NETKIT_PEER_POLICY, IFLA_NETKIT_MODE, + IFLA_NETKIT_SCRUB, + IFLA_NETKIT_PEER_SCRUB, __IFLA_NETKIT_MAX, }; #define IFLA_NETKIT_MAX (__IFLA_NETKIT_MAX - 1) @@ -854,6 +1392,7 @@ enum { IFLA_VXLAN_DF, IFLA_VXLAN_VNIFILTER, /* only applicable with COLLECT_METADATA mode */ IFLA_VXLAN_LOCALBYPASS, + IFLA_VXLAN_LABEL_POLICY, /* IPv6 flow label policy; ifla_vxlan_label_policy */ __IFLA_VXLAN_MAX }; #define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1) @@ -871,6 +1410,13 @@ enum ifla_vxlan_df { VXLAN_DF_MAX = __VXLAN_DF_END - 1, }; +enum ifla_vxlan_label_policy { + VXLAN_LABEL_FIXED = 0, + VXLAN_LABEL_INHERIT = 1, + __VXLAN_LABEL_END, + VXLAN_LABEL_MAX = __VXLAN_LABEL_END - 1, +}; + /* GENEVE section */ enum { IFLA_GENEVE_UNSPEC, @@ -935,6 +1481,8 @@ enum { IFLA_GTP_ROLE, IFLA_GTP_CREATE_SOCKETS, IFLA_GTP_RESTART_COUNT, + IFLA_GTP_LOCAL, + IFLA_GTP_LOCAL6, __IFLA_GTP_MAX, }; #define IFLA_GTP_MAX (__IFLA_GTP_MAX - 1) @@ -1240,6 +1788,7 @@ enum { IFLA_HSR_PROTOCOL, /* Indicate different protocol than * HSR. For example PRP. */ + IFLA_HSR_INTERLINK, /* HSR interlink network device */ __IFLA_HSR_MAX, }; @@ -1417,7 +1966,9 @@ enum { enum { IFLA_DSA_UNSPEC, - IFLA_DSA_MASTER, + IFLA_DSA_CONDUIT, + /* Deprecated, use IFLA_DSA_CONDUIT instead */ + IFLA_DSA_MASTER = IFLA_DSA_CONDUIT, __IFLA_DSA_MAX, }; -- cgit v1.2.3 From 716fa7dadf116ec4a27f56558b2a5bdd7e8decab Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Fri, 4 Oct 2024 12:13:35 +0200 Subject: selftests/bpf: Extend netkit tests to validate skb meta data Add a small netkit test to validate skb mark and priority under the default scrubbing as well as with mark and priority scrubbing off. # ./vmtest.sh -- ./test_progs -t netkit [...] ./test_progs -t netkit [ 1.419662] tsc: Refined TSC clocksource calibration: 3407.993 MHz [ 1.420151] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x311fcd52370, max_idle_ns: 440795242006 ns [ 1.420897] clocksource: Switched to clocksource tsc [ 1.447996] bpf_testmod: loading out-of-tree module taints kernel. [ 1.448447] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel #357 tc_netkit_basic:OK #358 tc_netkit_device:OK #359 tc_netkit_multi_links:OK #360 tc_netkit_multi_opts:OK #361 tc_netkit_neigh_links:OK #362 tc_netkit_pkt_type:OK #363 tc_netkit_scrub:OK Summary: 7/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann Cc: Nikolay Aleksandrov Acked-by: Nikolay Aleksandrov Link: https://lore.kernel.org/r/20241004101335.117711-5-daniel@iogearbox.net Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/prog_tests/tc_netkit.c | 94 +++++++++++++++++++--- tools/testing/selftests/bpf/progs/test_tc_link.c | 12 +++ 2 files changed, 97 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/tc_netkit.c b/tools/testing/selftests/bpf/prog_tests/tc_netkit.c index b9135720024c..151a4210028f 100644 --- a/tools/testing/selftests/bpf/prog_tests/tc_netkit.c +++ b/tools/testing/selftests/bpf/prog_tests/tc_netkit.c @@ -14,7 +14,9 @@ #include "netlink_helpers.h" #include "tc_helpers.h" -#define ICMP_ECHO 8 +#define MARK 42 +#define PRIO 0xeb9f +#define ICMP_ECHO 8 struct icmphdr { __u8 type; @@ -33,7 +35,7 @@ struct iplink_req { }; static int create_netkit(int mode, int policy, int peer_policy, int *ifindex, - bool same_netns) + bool same_netns, int scrub, int peer_scrub) { struct rtnl_handle rth = { .fd = -1 }; struct iplink_req req = {}; @@ -58,6 +60,8 @@ static int create_netkit(int mode, int policy, int peer_policy, int *ifindex, data = addattr_nest(&req.n, sizeof(req), IFLA_INFO_DATA); addattr32(&req.n, sizeof(req), IFLA_NETKIT_POLICY, policy); addattr32(&req.n, sizeof(req), IFLA_NETKIT_PEER_POLICY, peer_policy); + addattr32(&req.n, sizeof(req), IFLA_NETKIT_SCRUB, scrub); + addattr32(&req.n, sizeof(req), IFLA_NETKIT_PEER_SCRUB, peer_scrub); addattr32(&req.n, sizeof(req), IFLA_NETKIT_MODE, mode); addattr_nest_end(&req.n, data); addattr_nest_end(&req.n, linkinfo); @@ -118,9 +122,9 @@ static void destroy_netkit(void) static int __send_icmp(__u32 dest) { + int sock, ret, mark = MARK, prio = PRIO; struct sockaddr_in addr; struct icmphdr icmp; - int sock, ret; ret = write_sysctl("/proc/sys/net/ipv4/ping_group_range", "0 0"); if (!ASSERT_OK(ret, "write_sysctl(net.ipv4.ping_group_range)")) @@ -135,6 +139,15 @@ static int __send_icmp(__u32 dest) if (!ASSERT_OK(ret, "setsockopt(SO_BINDTODEVICE)")) goto out; + ret = setsockopt(sock, SOL_SOCKET, SO_MARK, &mark, sizeof(mark)); + if (!ASSERT_OK(ret, "setsockopt(SO_MARK)")) + goto out; + + ret = setsockopt(sock, SOL_SOCKET, SO_PRIORITY, + &prio, sizeof(prio)); + if (!ASSERT_OK(ret, "setsockopt(SO_PRIORITY)")) + goto out; + memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; addr.sin_addr.s_addr = htonl(dest); @@ -171,7 +184,8 @@ void serial_test_tc_netkit_basic(void) int err, ifindex; err = create_netkit(NETKIT_L2, NETKIT_PASS, NETKIT_PASS, - &ifindex, false); + &ifindex, false, NETKIT_SCRUB_DEFAULT, + NETKIT_SCRUB_DEFAULT); if (err) return; @@ -285,7 +299,8 @@ static void serial_test_tc_netkit_multi_links_target(int mode, int target) int err, ifindex; err = create_netkit(mode, NETKIT_PASS, NETKIT_PASS, - &ifindex, false); + &ifindex, false, NETKIT_SCRUB_DEFAULT, + NETKIT_SCRUB_DEFAULT); if (err) return; @@ -413,7 +428,8 @@ static void serial_test_tc_netkit_multi_opts_target(int mode, int target) int err, ifindex; err = create_netkit(mode, NETKIT_PASS, NETKIT_PASS, - &ifindex, false); + &ifindex, false, NETKIT_SCRUB_DEFAULT, + NETKIT_SCRUB_DEFAULT); if (err) return; @@ -527,7 +543,8 @@ void serial_test_tc_netkit_device(void) int err, ifindex, ifindex2; err = create_netkit(NETKIT_L3, NETKIT_PASS, NETKIT_PASS, - &ifindex, true); + &ifindex, true, NETKIT_SCRUB_DEFAULT, + NETKIT_SCRUB_DEFAULT); if (err) return; @@ -638,7 +655,8 @@ static void serial_test_tc_netkit_neigh_links_target(int mode, int target) int err, ifindex; err = create_netkit(mode, NETKIT_PASS, NETKIT_PASS, - &ifindex, false); + &ifindex, false, NETKIT_SCRUB_DEFAULT, + NETKIT_SCRUB_DEFAULT); if (err) return; @@ -715,7 +733,8 @@ static void serial_test_tc_netkit_pkt_type_mode(int mode) struct bpf_link *link; err = create_netkit(mode, NETKIT_PASS, NETKIT_PASS, - &ifindex, true); + &ifindex, true, NETKIT_SCRUB_DEFAULT, + NETKIT_SCRUB_DEFAULT); if (err) return; @@ -779,3 +798,60 @@ void serial_test_tc_netkit_pkt_type(void) serial_test_tc_netkit_pkt_type_mode(NETKIT_L2); serial_test_tc_netkit_pkt_type_mode(NETKIT_L3); } + +static void serial_test_tc_netkit_scrub_type(int scrub) +{ + LIBBPF_OPTS(bpf_netkit_opts, optl); + struct test_tc_link *skel; + struct bpf_link *link; + int err, ifindex; + + err = create_netkit(NETKIT_L2, NETKIT_PASS, NETKIT_PASS, + &ifindex, false, scrub, scrub); + if (err) + return; + + skel = test_tc_link__open(); + if (!ASSERT_OK_PTR(skel, "skel_open")) + goto cleanup; + + ASSERT_EQ(bpf_program__set_expected_attach_type(skel->progs.tc8, + BPF_NETKIT_PRIMARY), 0, "tc8_attach_type"); + + err = test_tc_link__load(skel); + if (!ASSERT_OK(err, "skel_load")) + goto cleanup; + + assert_mprog_count_ifindex(ifindex, BPF_NETKIT_PRIMARY, 0); + assert_mprog_count_ifindex(ifindex, BPF_NETKIT_PEER, 0); + + ASSERT_EQ(skel->bss->seen_tc8, false, "seen_tc8"); + + link = bpf_program__attach_netkit(skel->progs.tc8, ifindex, &optl); + if (!ASSERT_OK_PTR(link, "link_attach")) + goto cleanup; + + skel->links.tc8 = link; + + assert_mprog_count_ifindex(ifindex, BPF_NETKIT_PRIMARY, 1); + assert_mprog_count_ifindex(ifindex, BPF_NETKIT_PEER, 0); + + tc_skel_reset_all_seen(skel); + ASSERT_EQ(send_icmp(), 0, "icmp_pkt"); + + ASSERT_EQ(skel->bss->seen_tc8, true, "seen_tc8"); + ASSERT_EQ(skel->bss->mark, scrub == NETKIT_SCRUB_NONE ? MARK : 0, "mark"); + ASSERT_EQ(skel->bss->prio, scrub == NETKIT_SCRUB_NONE ? PRIO : 0, "prio"); +cleanup: + test_tc_link__destroy(skel); + + assert_mprog_count_ifindex(ifindex, BPF_NETKIT_PRIMARY, 0); + assert_mprog_count_ifindex(ifindex, BPF_NETKIT_PEER, 0); + destroy_netkit(); +} + +void serial_test_tc_netkit_scrub(void) +{ + serial_test_tc_netkit_scrub_type(NETKIT_SCRUB_DEFAULT); + serial_test_tc_netkit_scrub_type(NETKIT_SCRUB_NONE); +} diff --git a/tools/testing/selftests/bpf/progs/test_tc_link.c b/tools/testing/selftests/bpf/progs/test_tc_link.c index ab3eae3d6af8..10d825928499 100644 --- a/tools/testing/selftests/bpf/progs/test_tc_link.c +++ b/tools/testing/selftests/bpf/progs/test_tc_link.c @@ -18,6 +18,7 @@ bool seen_tc4; bool seen_tc5; bool seen_tc6; bool seen_tc7; +bool seen_tc8; bool set_type; @@ -25,6 +26,8 @@ bool seen_eth; bool seen_host; bool seen_mcast; +int mark, prio; + SEC("tc/ingress") int tc1(struct __sk_buff *skb) { @@ -100,3 +103,12 @@ out: seen_tc7 = true; return TCX_PASS; } + +SEC("tc/egress") +int tc8(struct __sk_buff *skb) +{ + seen_tc8 = true; + mark = skb->mark; + prio = skb->priority; + return TCX_PASS; +} -- cgit v1.2.3 From 710fbca820c721cdd60fa8c5bbe9deb4c0788aae Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= Date: Fri, 27 Sep 2024 15:13:52 +0200 Subject: libbpf: Add missing per-arch include path MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit libbpf does not include the per-arch tools include path, e.g. tools/arch/riscv/include. Some architectures depend those files to build properly. Include tools/arch/$(SUBARCH)/include in the libbpf build. Fixes: 6d74d178fe6e ("tools: Add riscv barrier implementation") Signed-off-by: Björn Töpel Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240927131355.350918-1-bjorn@kernel.org --- tools/lib/bpf/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile index 1b22f0f37288..857a5f7b413d 100644 --- a/tools/lib/bpf/Makefile +++ b/tools/lib/bpf/Makefile @@ -61,7 +61,8 @@ ifndef VERBOSE endif INCLUDES = -I$(or $(OUTPUT),.) \ - -I$(srctree)/tools/include -I$(srctree)/tools/include/uapi + -I$(srctree)/tools/include -I$(srctree)/tools/include/uapi \ + -I$(srctree)/tools/arch/$(SRCARCH)/include export prefix libdir src obj -- cgit v1.2.3 From 19090f0306f1748980596c6c71f1c4b128639cff Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= Date: Fri, 27 Sep 2024 15:13:53 +0200 Subject: selftests: bpf: Add missing per-arch include path MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The prog_tests programs do not include the per-arch tools include path, e.g. tools/arch/riscv/include. Some architectures depend those files to build properly. Include tools/arch/$(SUBARCH)/include in the selftests bpf build. Fixes: 6d74d178fe6e ("tools: Add riscv barrier implementation") Signed-off-by: Björn Töpel Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240927131355.350918-2-bjorn@kernel.org --- tools/testing/selftests/bpf/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index e295e3df5ec6..28a76baa854d 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -10,6 +10,7 @@ TOOLSDIR := $(abspath ../../..) LIBDIR := $(TOOLSDIR)/lib BPFDIR := $(LIBDIR)/bpf TOOLSINCDIR := $(TOOLSDIR)/include +TOOLSARCHINCDIR := $(TOOLSDIR)/arch/$(SRCARCH)/include BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool APIDIR := $(TOOLSINCDIR)/uapi ifneq ($(O),) @@ -44,7 +45,7 @@ CFLAGS += -g $(OPT_FLAGS) -rdynamic \ -Wall -Werror -fno-omit-frame-pointer \ $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \ -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ - -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT) + -I$(TOOLSINCDIR) -I$(TOOLSARCHINCDIR) -I$(APIDIR) -I$(OUTPUT) LDFLAGS += $(SAN_LDFLAGS) LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread -- cgit v1.2.3 From 4b146e95da87bf0fe64502aaafebeb622dfff653 Mon Sep 17 00:00:00 2001 From: Eric Long Date: Wed, 2 Oct 2024 14:25:06 +0800 Subject: libbpf: Do not resolve size on duplicate FUNCs FUNCs do not have sizes, thus currently btf__resolve_size will fail with -EINVAL. Add conditions so that we only update size when the BTF object is not function or function prototype. Signed-off-by: Eric Long Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241002-libbpf-dup-extern-funcs-v4-1-560eb460ff90@hack3r.moe --- tools/lib/bpf/linker.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/lib/bpf/linker.c b/tools/lib/bpf/linker.c index 81dbbdd79a7c..f83c1c29982c 100644 --- a/tools/lib/bpf/linker.c +++ b/tools/lib/bpf/linker.c @@ -2451,6 +2451,10 @@ static int linker_append_btf(struct bpf_linker *linker, struct src_obj *obj) if (glob_sym && glob_sym->var_idx >= 0) { __s64 sz; + /* FUNCs don't have size, nothing to update */ + if (btf_is_func(t)) + continue; + dst_var = &dst_sec->sec_vars[glob_sym->var_idx]; /* Because underlying BTF type might have * changed, so might its size have changed, so -- cgit v1.2.3 From 3c591de2854381e313ec149bc1bbd8360f9ed53b Mon Sep 17 00:00:00 2001 From: Eric Long Date: Wed, 2 Oct 2024 14:25:07 +0800 Subject: selftests/bpf: Test linking with duplicate extern functions Previously when multiple BPF object files referencing the same extern function (usually kfunc) are statically linked using `bpftool gen object`, libbpf tries to get the nonexistent size of BTF_KIND_FUNC_PROTO and fails. This test ensures it is fixed. Signed-off-by: Eric Long Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241002-libbpf-dup-extern-funcs-v4-2-560eb460ff90@hack3r.moe --- tools/testing/selftests/bpf/progs/linked_funcs1.c | 8 ++++++++ tools/testing/selftests/bpf/progs/linked_funcs2.c | 8 ++++++++ 2 files changed, 16 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/linked_funcs1.c b/tools/testing/selftests/bpf/progs/linked_funcs1.c index cc79dddac182..049a1f78de3f 100644 --- a/tools/testing/selftests/bpf/progs/linked_funcs1.c +++ b/tools/testing/selftests/bpf/progs/linked_funcs1.c @@ -63,6 +63,8 @@ extern int set_output_val2(int x); /* here we'll force set_output_ctx2() to be __hidden in the final obj file */ __hidden extern void set_output_ctx2(__u64 *ctx); +void *bpf_cast_to_kern_ctx(void *obj) __ksym; + SEC("?raw_tp/sys_enter") int BPF_PROG(handler1, struct pt_regs *regs, long id) { @@ -86,4 +88,10 @@ int BPF_PROG(handler1, struct pt_regs *regs, long id) return 0; } +/* Generate BTF FUNC record and test linking with duplicate extern functions */ +void kfunc_gen1(void) +{ + bpf_cast_to_kern_ctx(0); +} + char LICENSE[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/linked_funcs2.c b/tools/testing/selftests/bpf/progs/linked_funcs2.c index 942cc5526ddf..96850759fd8d 100644 --- a/tools/testing/selftests/bpf/progs/linked_funcs2.c +++ b/tools/testing/selftests/bpf/progs/linked_funcs2.c @@ -63,6 +63,8 @@ extern int set_output_val1(int x); /* here we'll force set_output_ctx1() to be __hidden in the final obj file */ __hidden extern void set_output_ctx1(__u64 *ctx); +void *bpf_cast_to_kern_ctx(void *obj) __ksym; + SEC("?raw_tp/sys_enter") int BPF_PROG(handler2, struct pt_regs *regs, long id) { @@ -86,4 +88,10 @@ int BPF_PROG(handler2, struct pt_regs *regs, long id) return 0; } +/* Generate BTF FUNC record and test linking with duplicate extern functions */ +void kfunc_gen2(void) +{ + bpf_cast_to_kern_ctx(0); +} + char LICENSE[] SEC("license") = "GPL"; -- cgit v1.2.3 From 5bf1557e3d6a69113649d831276ea2f97585fc33 Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Thu, 3 Oct 2024 14:03:07 -0700 Subject: selftests/bpf: Fix backtrace printing for selftests crashes test_progs uses glibc specific functions backtrace() and backtrace_symbols_fd() to print backtrace in case of SIGSEGV. Recent commit (see fixes) updated test_progs.c to define stub versions of the same functions with attriubte "weak" in order to allow linking test_progs against musl libc. Unfortunately this broke the backtrace handling for glibc builds. As it turns out, glibc defines backtrace() and backtrace_symbols_fd() as weak: $ llvm-readelf --symbols /lib64/libc.so.6 \ | grep -P '( backtrace_symbols_fd| backtrace)$' 4910: 0000000000126b40 161 FUNC WEAK DEFAULT 16 backtrace 6843: 0000000000126f90 852 FUNC WEAK DEFAULT 16 backtrace_symbols_fd So does test_progs: $ llvm-readelf --symbols test_progs \ | grep -P '( backtrace_symbols_fd| backtrace)$' 2891: 00000000006ad190 15 FUNC WEAK DEFAULT 13 backtrace 11215: 00000000006ad1a0 41 FUNC WEAK DEFAULT 13 backtrace_symbols_fd In such situation dynamic linker is not obliged to favour glibc implementation over the one defined in test_progs. Compiling with the following simple modification to test_progs.c demonstrates the issue: $ git diff ... \--- a/tools/testing/selftests/bpf/test_progs.c \+++ b/tools/testing/selftests/bpf/test_progs.c \@@ -1817,6 +1817,7 @@ int main(int argc, char **argv) if (err) return err; + *(int *)0xdeadbeef = 42; err = cd_flavor_subdir(argv[0]); if (err) return err; $ ./test_progs [0]: Caught signal #11! Stack trace: Segmentation fault (core dumped) Resolve this by hiding stub definitions behind __GLIBC__ macro check instead of using "weak" attribute. Fixes: c9a83e76b5a9 ("selftests/bpf: Fix compile if backtrace support missing in libc") Signed-off-by: Eduard Zingerman Signed-off-by: Andrii Nakryiko Tested-by: Tony Ambardar Reviewed-by: Tony Ambardar Acked-by: Daniel Xu Link: https://lore.kernel.org/bpf/20241003210307.3847907-1-eddyz87@gmail.com --- tools/testing/selftests/bpf/test_progs.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c index 7846f7f98908..7421874380c2 100644 --- a/tools/testing/selftests/bpf/test_progs.c +++ b/tools/testing/selftests/bpf/test_progs.c @@ -20,11 +20,13 @@ #include "network_helpers.h" +/* backtrace() and backtrace_symbols_fd() are glibc specific, + * use header file when glibc is available and provide stub + * implementations when another libc implementation is used. + */ #ifdef __GLIBC__ #include /* backtrace */ -#endif - -/* Default backtrace funcs if missing at link */ +#else __weak int backtrace(void **buffer, int size) { return 0; @@ -34,6 +36,7 @@ __weak void backtrace_symbols_fd(void *const *buffer, int size, int fd) { dprintf(fd, "\n"); } +#endif /*__GLIBC__ */ int env_verbosity = 0; -- cgit v1.2.3 From 42b2331081178785d50d116c85ca40d728b48291 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Mon, 7 Oct 2024 08:53:11 -0700 Subject: tools: ynl-gen: refactor check validation for TypeBinary We only support a single check at a time for TypeBinary. Refactor the code to cover 'exact-len' and make adding new checks easier. Link: https://lore.kernel.org/20241004063855.1a693dd1@kernel.org Link: https://patch.msgid.link/20241007155311.1193382-1-kuba@kernel.org Signed-off-by: Jakub Kicinski --- tools/net/ynl/ynl-gen-c.py | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py index 717530bc9c52..9e8254aad578 100755 --- a/tools/net/ynl/ynl-gen-c.py +++ b/tools/net/ynl/ynl-gen-c.py @@ -464,17 +464,22 @@ class TypeBinary(Type): return f'.type = YNL_PT_BINARY,' def _attr_policy(self, policy): - if 'exact-len' in self.checks: - mem = 'NLA_POLICY_EXACT_LEN(' + str(self.get_limit('exact-len')) + ')' + if len(self.checks) == 0: + pass + elif len(self.checks) == 1: + check_name = list(self.checks)[0] + if check_name not in {'exact-len', 'min-len'}: + raise Exception('Unsupported check for binary type: ' + check_name) else: - mem = '{ ' - if len(self.checks) == 1 and 'min-len' in self.checks: - mem += '.len = ' + str(self.get_limit('min-len')) - elif len(self.checks) == 0: - mem += '.type = NLA_BINARY' - else: - raise Exception('One or more of binary type checks not implemented, yet') - mem += ', }' + raise Exception('More than one check for binary type not implemented, yet') + + if len(self.checks) == 0: + mem = '{ .type = NLA_BINARY, }' + elif 'exact-len' in self.checks: + mem = 'NLA_POLICY_EXACT_LEN(' + str(self.get_limit('exact-len')) + ')' + elif 'min-len' in self.checks: + mem = '{ .len = ' + str(self.get_limit('min-len')) + ', }' + return mem def attr_put(self, ri, var): -- cgit v1.2.3 From bc9b3fb827fceec4e05564d6e668280f4470ab5b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Tue, 8 Oct 2024 16:50:57 +0200 Subject: selftests/bpf: add missing header include for htons MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Including the network_helpers.h header in tests can lead to the following build error: ./network_helpers.h: In function ‘csum_tcpudp_magic’: ./network_helpers.h:116:14: error: implicit declaration of function \ ‘htons’ [-Werror=implicit-function-declaration] 116 | s += htons(proto + len); The error is avoided in many cases thanks to some other headers included earlier and bringing in arpa/inet.h (ie: test_progs.h). Make sure that test_progs build success does not depend on header ordering by adding the missing header include in network_helpers.h Fixes: f6642de0c3e9 ("selftests/bpf: Add csum helpers") Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241008-network_helpers_fix-v1-1-2c2ae03df7ef@bootlin.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/network_helpers.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h index c72c16e1aff8..5764155b6d25 100644 --- a/tools/testing/selftests/bpf/network_helpers.h +++ b/tools/testing/selftests/bpf/network_helpers.h @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __NETWORK_HELPERS_H #define __NETWORK_HELPERS_H +#include #include #include #include -- cgit v1.2.3 From 2e82c0d4562a4b8292af83577b70af888a93d16d Mon Sep 17 00:00:00 2001 From: Joshua Hahn Date: Wed, 2 Oct 2024 11:47:17 -0700 Subject: cgroup/rstat: Selftests for niced CPU statistics Creates a cgroup with a single nice CPU hog process running. fork() is called to generate the nice process because un-nicing is not possible (see man nice(3)). If fork() was not used to generate the CPU hog, we would run the rest of the cgroup selftest suite as a nice process. Signed-off-by: Joshua Hahn Signed-off-by: Tejun Heo --- tools/testing/selftests/cgroup/test_cpu.c | 75 +++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/cgroup/test_cpu.c b/tools/testing/selftests/cgroup/test_cpu.c index dad2ed82f3ef..201ce14cb422 100644 --- a/tools/testing/selftests/cgroup/test_cpu.c +++ b/tools/testing/selftests/cgroup/test_cpu.c @@ -8,6 +8,7 @@ #include #include #include +#include #include "../kselftest.h" #include "cgroup_util.h" @@ -229,6 +230,79 @@ cleanup: return ret; } +/* + * Creates a nice process that consumes CPU and checks that the elapsed + * usertime in the cgroup is close to the expected time. + */ +static int test_cpucg_nice(const char *root) +{ + int ret = KSFT_FAIL; + int status; + long user_usec, nice_usec; + long usage_seconds = 2; + long expected_nice_usec = usage_seconds * USEC_PER_SEC; + char *cpucg; + pid_t pid; + + cpucg = cg_name(root, "cpucg_test"); + if (!cpucg) + goto cleanup; + + if (cg_create(cpucg)) + goto cleanup; + + user_usec = cg_read_key_long(cpucg, "cpu.stat", "user_usec"); + nice_usec = cg_read_key_long(cpucg, "cpu.stat", "nice_usec"); + if (nice_usec == -1) + ret = KSFT_SKIP; + if (user_usec != 0 || nice_usec != 0) + goto cleanup; + + /* + * We fork here to create a new process that can be niced without + * polluting the nice value of other selftests + */ + pid = fork(); + if (pid < 0) { + goto cleanup; + } else if (pid == 0) { + struct cpu_hog_func_param param = { + .nprocs = 1, + .ts = { + .tv_sec = usage_seconds, + .tv_nsec = 0, + }, + .clock_type = CPU_HOG_CLOCK_PROCESS, + }; + char buf[64]; + snprintf(buf, sizeof(buf), "%d", getpid()); + if (cg_write(cpucg, "cgroup.procs", buf)) + goto cleanup; + + /* Try to keep niced CPU usage as constrained to hog_cpu as possible */ + nice(1); + hog_cpus_timed(cpucg, param); + exit(0); + } else { + waitpid(pid, &status, 0); + if (!WIFEXITED(status)) + goto cleanup; + + user_usec = cg_read_key_long(cpucg, "cpu.stat", "user_usec"); + nice_usec = cg_read_key_long(cpucg, "cpu.stat", "nice_usec"); + if (!values_close(nice_usec, expected_nice_usec, 1)) + goto cleanup; + + ret = KSFT_PASS; + } + +cleanup: + cg_destroy(cpucg); + free(cpucg); + + return ret; +} + static int run_cpucg_weight_test( const char *root, @@ -686,6 +760,7 @@ struct cpucg_test { } tests[] = { T(test_cpucg_subtree_control), T(test_cpucg_stats), + T(test_cpucg_nice), T(test_cpucg_weight_overprovisioned), T(test_cpucg_weight_underprovisioned), T(test_cpucg_nested_weight_overprovisioned), -- cgit v1.2.3 From 693fe954d61d4696aa06f631fd0bce0b3b3e8027 Mon Sep 17 00:00:00 2001 From: Mahe Tardy Date: Mon, 7 Oct 2024 09:59:58 +0000 Subject: selftests/bpf: add tcx netns cookie tests Add netns cookie test that verifies the helper is now supported and work in the context of tc programs. Signed-off-by: Mahe Tardy Link: https://lore.kernel.org/r/20241007095958.97442-2-mahe.tardy@gmail.com Signed-off-by: Martin KaFai Lau --- .../selftests/bpf/prog_tests/netns_cookie.c | 29 ++++++++++++++++------ .../selftests/bpf/progs/netns_cookie_prog.c | 10 ++++++++ 2 files changed, 32 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/netns_cookie.c b/tools/testing/selftests/bpf/prog_tests/netns_cookie.c index 71d8f3ba7d6b..ac3c3c097c0e 100644 --- a/tools/testing/selftests/bpf/prog_tests/netns_cookie.c +++ b/tools/testing/selftests/bpf/prog_tests/netns_cookie.c @@ -8,12 +8,16 @@ #define SO_NETNS_COOKIE 71 #endif +#define loopback 1 + static int duration; void test_netns_cookie(void) { + LIBBPF_OPTS(bpf_prog_attach_opts, opta); + LIBBPF_OPTS(bpf_prog_detach_opts, optd); int server_fd = -1, client_fd = -1, cgroup_fd = -1; - int err, val, ret, map, verdict; + int err, val, ret, map, verdict, tc_fd; struct netns_cookie_prog *skel; uint64_t cookie_expected_value; socklen_t vallen = sizeof(cookie_expected_value); @@ -38,36 +42,47 @@ void test_netns_cookie(void) if (!ASSERT_OK(err, "prog_attach")) goto done; + tc_fd = bpf_program__fd(skel->progs.get_netns_cookie_tcx); + err = bpf_prog_attach_opts(tc_fd, loopback, BPF_TCX_INGRESS, &opta); + if (!ASSERT_OK(err, "prog_attach")) + goto done; + server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0); if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno)) - goto done; + goto cleanup_tc; client_fd = connect_to_fd(server_fd, 0); if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno)) - goto done; + goto cleanup_tc; ret = send(client_fd, send_msg, sizeof(send_msg), 0); if (CHECK(ret != sizeof(send_msg), "send(msg)", "ret:%d\n", ret)) - goto done; + goto cleanup_tc; err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.sockops_netns_cookies), &client_fd, &val); if (!ASSERT_OK(err, "map_lookup(sockops_netns_cookies)")) - goto done; + goto cleanup_tc; err = getsockopt(client_fd, SOL_SOCKET, SO_NETNS_COOKIE, &cookie_expected_value, &vallen); if (!ASSERT_OK(err, "getsockopt")) - goto done; + goto cleanup_tc; ASSERT_EQ(val, cookie_expected_value, "cookie_value"); err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.sk_msg_netns_cookies), &client_fd, &val); if (!ASSERT_OK(err, "map_lookup(sk_msg_netns_cookies)")) - goto done; + goto cleanup_tc; ASSERT_EQ(val, cookie_expected_value, "cookie_value"); + ASSERT_EQ(skel->bss->tcx_init_netns_cookie, cookie_expected_value, "cookie_value"); + ASSERT_EQ(skel->bss->tcx_netns_cookie, cookie_expected_value, "cookie_value"); + +cleanup_tc: + err = bpf_prog_detach_opts(tc_fd, loopback, BPF_TCX_INGRESS, &optd); + ASSERT_OK(err, "prog_detach"); done: if (server_fd != -1) diff --git a/tools/testing/selftests/bpf/progs/netns_cookie_prog.c b/tools/testing/selftests/bpf/progs/netns_cookie_prog.c index aeff3a4f9287..c6edf8dbefeb 100644 --- a/tools/testing/selftests/bpf/progs/netns_cookie_prog.c +++ b/tools/testing/selftests/bpf/progs/netns_cookie_prog.c @@ -27,6 +27,8 @@ struct { __type(value, __u64); } sock_map SEC(".maps"); +int tcx_init_netns_cookie, tcx_netns_cookie; + SEC("sockops") int get_netns_cookie_sockops(struct bpf_sock_ops *ctx) { @@ -81,4 +83,12 @@ int get_netns_cookie_sk_msg(struct sk_msg_md *msg) return 1; } +SEC("tcx/ingress") +int get_netns_cookie_tcx(struct __sk_buff *skb) +{ + tcx_init_netns_cookie = bpf_get_netns_cookie(NULL); + tcx_netns_cookie = bpf_get_netns_cookie(skb); + return TCX_PASS; +} + char _license[] SEC("license") = "GPL"; -- cgit v1.2.3 From 870dd51117cb901f560ea5a85b9876956e6f35b8 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Mon, 7 Oct 2024 18:26:05 +0200 Subject: selftests: mlxsw: sch_red_ets: Increase required backlog Backlog fluctuates on Spectrum-4 much more than on <4. Increasing the desired backlog seems to help, as the constant fluctuations do not overlap into the territory where packets are marked. Signed-off-by: Petr Machata Reviewed-by: Amit Cohen Link: https://patch.msgid.link/0821fb3aa8bb6a6c0d3000baab04995517c9a0cc.1728316370.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh index 8ecddafa79b3..576067b207a8 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh @@ -20,8 +20,8 @@ source sch_red_core.sh # $BACKLOG2 are far enough not to overlap, so that we can assume that if we do # see (do not see) marking, it is actually due to the configuration of that one # TC, and not due to configuration of the other TC leaking over. -BACKLOG1=200000 -BACKLOG2=500000 +BACKLOG1=400000 +BACKLOG2=1000000 install_root_qdisc() { @@ -35,7 +35,7 @@ install_qdisc_tc0() tc qdisc add dev $swp3 parent 10:8 handle 108: red \ limit 1000000 min $BACKLOG1 max $((BACKLOG1 + 1)) \ - probability 1.0 avpkt 8000 burst 38 "${args[@]}" + probability 1.0 avpkt 8000 burst 51 "${args[@]}" } install_qdisc_tc1() @@ -44,7 +44,7 @@ install_qdisc_tc1() tc qdisc add dev $swp3 parent 10:7 handle 107: red \ limit 1000000 min $BACKLOG2 max $((BACKLOG2 + 1)) \ - probability 1.0 avpkt 8000 burst 63 "${args[@]}" + probability 1.0 avpkt 8000 burst 126 "${args[@]}" } install_qdisc() -- cgit v1.2.3 From 8fb5b60734564473c72ca85d617cd685738948f0 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Mon, 7 Oct 2024 18:26:06 +0200 Subject: selftests: mlxsw: sch_red_core: Increase backlog size tolerance Backlog fluctuates on Spectrum-4 much more than on <4. In practice we can sample queue depth values going from about -12% to about +7% of the configured RED limit. The test which checks the queue size has a limit of +-10%, and as a result often fails. We attempted to fix the issue by busywaiting for several seconds hoping to get within the bounds, but that still proved to be too noisy (or the wait time would be impractically long). Unfortunately we have to bump the value tolerance from 10% to 15%, which in this patch do. Signed-off-by: Petr Machata Reviewed-by: Amit Cohen Link: https://patch.msgid.link/f54950df2a8fcba46c3ddc1053376352fa2e592b.1728316370.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh index 299e06a5808c..a25a15eb6d31 100644 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh @@ -532,10 +532,11 @@ do_red_test() check_fail $? "Traffic went into backlog instead of being early-dropped" pct=$(check_marking get_nmarked $vlan "== 0") check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0." + backlog=$(get_qdisc_backlog $vlan) local diff=$((limit - backlog)) pct=$((100 * diff / limit)) - ((-10 <= pct && pct <= 10)) - check_err $? "backlog $backlog / $limit expected <= 10% distance" + ((-15 <= pct && pct <= 15)) + check_err $? "backlog $backlog / $limit expected <= 15% distance" log_test "TC $((vlan - 10)): RED backlog > limit" stop_traffic -- cgit v1.2.3 From 787f148cec340114dc22c49d8b045ff3ff0adad6 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Mon, 7 Oct 2024 18:26:07 +0200 Subject: selftests: mlxsw: sch_red_core: Sleep before querying queue depth The qdisc stats are taken from the port's periodic HW stats, which are updated once a second. We try to accommodate the latency by using busywait in build_backlog(). The issue in that seems to be that when do_mark_test() builds the backlog, it makes the decision whether to send more packets based on the first instance of the queue depth stat exceeding the current value, when in fact more traffic is on the way and the queue depth would increase further. This leads to failures in TC 1 of mark-mirror test, where we see the following failure: TEST: TC 0: marked packets mirror'd [ OK ] TEST: TC 1: marked packets mirror'd [FAIL] Spurious packets (1680 -> 2290) observed without buffer pressure Fix by waiting for the full second before reading the queue depth for the first time, to make sure it reflects all in-flight traffic. Signed-off-by: Petr Machata Reviewed-by: Amit Cohen Link: https://patch.msgid.link/321dcf8b3e9a1f0766429c8cf3e3f1746f1bc375.1728316370.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh index a25a15eb6d31..b1ff395b3880 100644 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh @@ -372,6 +372,7 @@ build_backlog() local i=0 while :; do + sleep 1 local cur=$(busywait 1100 until_counter_is "> $cur" \ get_qdisc_backlog $vlan) local diff=$((size - cur)) -- cgit v1.2.3 From 7049166e51bc2b854935eda72f7fb8c3f4492f6f Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Mon, 7 Oct 2024 18:26:08 +0200 Subject: selftests: mlxsw: sch_red_core: Send more packets for drop tests This test works by injecting into a port with a maxed-out queue a couple packets and checks if a corresponding number of packets were dropped. This has worked well on Spectrum<4, but on Spectrum-4 it has been noisy. This is in line with the observation that on Spectrum-4, queue size tends to fluctuate more. A handful of packets could then still be accepted to the queue even though it was nominally full just recently. In order to accommodate this behavior, send many more packets. The buffer can fit N extra packets, but not N% packets. This therefore allows us to set wider absolute margins, while actually narrowing them relatively. Signed-off-by: Petr Machata Reviewed-by: Ido Schimmel Link: https://patch.msgid.link/abc869b9f6003d400d6293ddd5edb2f4517f44d5.1728316370.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- .../testing/selftests/drivers/net/mlxsw/sch_red_core.sh | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh index b1ff395b3880..316444389c4e 100644 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh @@ -653,20 +653,22 @@ do_drop_test() build_backlog $vlan $((3 * limit / 2)) udp >/dev/null base=$($fetch_counter) - send_packets $vlan udp 11 + send_packets $vlan udp 100 - now=$(busywait 1100 until_counter_is ">= $((base + 10))" $fetch_counter) - check_err $? "Dropped packets not observed: 11 expected, $((now - base)) seen" + now=$(busywait 1100 until_counter_is ">= $((base + 95))" $fetch_counter) + check_err $? "${trigger}ped packets not observed: 100 expected, $((now - base)) seen" # When no extra traffic is injected, there should be no mirroring. - busywait 1100 until_counter_is ">= $((base + 20))" $fetch_counter >/dev/null + busywait 1100 until_counter_is ">= $((base + 110))" \ + $fetch_counter >/dev/null check_fail $? "Spurious packets observed" # When the rule is uninstalled, there should be no mirroring. qevent_rule_uninstall_$subtest - send_packets $vlan udp 11 - busywait 1100 until_counter_is ">= $((base + 20))" $fetch_counter >/dev/null - check_fail $? "Spurious packets observed after uninstall" + send_packets $vlan udp 100 + now=$(busywait 1100 until_counter_is ">= $((base + 110))" \ + $fetch_counter) + check_fail $? "$((now - base)) spurious packets observed after uninstall" log_test "TC $((vlan - 10)): ${trigger}ped packets $subtest'd" -- cgit v1.2.3 From 501fa2426b5ffbe08c2571b6f5c3f3afa1970aa2 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Mon, 7 Oct 2024 18:26:09 +0200 Subject: selftests: mlxsw: sch_red_core: Lower TBF rate The RED test uses a pair of TBF shapers. The first to get predictably-sized stream of traffic, and second to get a 100% saturated chokepoint. To this chokepoint it injects individual packets. Because the chokepoint is saturated, these additional packets go straight to the backlog. This allows the test to check RED behavior across various queue sizes. The shapers are rated at 1Gbps, for historical reasons (before mlxsw supported TBF offload, the test used port speed to create the chokepoints). Machines with a low-power CPU may have trouble consistently generating 1Gbps of traffic, and the test then spuriously fails. Instead, drop the rate to 200Mbps (Spectrum has a guaranteed shaper rate granularity of 200Mbps, so anything lower is not guaranteed to work well). Because that means fewer packets will be mirrored in the ECN-mark test, adjust the passing condition accordingly. Signed-off-by: Petr Machata Link: https://patch.msgid.link/c6712f9c5de75ae0bc2ab3d8ea7d92aaaf93af95.1728316370.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh index 316444389c4e..f4c324957dcc 100644 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh @@ -137,7 +137,7 @@ h2_create() # Prevent this by adding a shaper which limits the traffic in $h2 to # 1Gbps. - tc qdisc replace dev $h2 root handle 10: tbf rate 1gbit \ + tc qdisc replace dev $h2 root handle 10: tbf rate 200mbit \ burst 128K limit 1G } @@ -199,7 +199,7 @@ switch_create() done for intf in $swp3 $swp4; do - tc qdisc replace dev $intf root handle 1: tbf rate 1gbit \ + tc qdisc replace dev $intf root handle 1: tbf rate 200mbit \ burst 128K limit 1G done @@ -602,7 +602,7 @@ do_mark_test() # Above limit, everything should be mirrored, we should see lots of # packets. build_backlog $vlan $((3 * limit / 2)) tcp tos=0x01 >/dev/null - busywait_for_counter 1100 +10000 \ + busywait_for_counter 1100 +2500 \ $fetch_counter > /dev/null check_err_fail "$should_fail" $? "ECN-marked packets $subtest'd" -- cgit v1.2.3 From 3c4e558787f233044052ffd255a44ff7127952ce Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Sun, 29 Sep 2024 02:06:59 +0100 Subject: perf probe: Remove unused add_perf_probe_events add_perf_probe_events has been unused since 2015's commit b02137cc6550 ("perf probe: Move print logic into cmd_probe()") which confusingly now uses perf_add_probe_events. Remove it. Signed-off-by: Dr. David Alan Gilbert Cc: Masami Hiramatsu Link: https://lore.kernel.org/r/20240929010659.430208-1-linux@treblig.org Signed-off-by: Namhyung Kim --- tools/perf/util/probe-event.c | 18 ------------------ tools/perf/util/probe-event.h | 1 - 2 files changed, 19 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index a17c9b8a7a79..698a92875374 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -3705,24 +3705,6 @@ void cleanup_perf_probe_events(struct perf_probe_event *pevs, int npevs) } } -int add_perf_probe_events(struct perf_probe_event *pevs, int npevs) -{ - int ret; - - ret = init_probe_symbol_maps(pevs->uprobes); - if (ret < 0) - return ret; - - ret = convert_perf_probe_events(pevs, npevs); - if (ret == 0) - ret = apply_perf_probe_events(pevs, npevs); - - cleanup_perf_probe_events(pevs, npevs); - - exit_probe_symbol_maps(); - return ret; -} - int del_perf_probe_events(struct strfilter *filter) { int ret, ret2, ufd = -1, kfd = -1; diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index 7e3b6c3d1f74..4850e52f274e 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -159,7 +159,6 @@ void line_range__clear(struct line_range *lr); /* Initialize line range */ int line_range__init(struct line_range *lr); -int add_perf_probe_events(struct perf_probe_event *pevs, int npevs); int convert_perf_probe_events(struct perf_probe_event *pevs, int npevs); int apply_perf_probe_events(struct perf_probe_event *pevs, int npevs); int show_probe_trace_events(struct perf_probe_event *pevs, int npevs); -- cgit v1.2.3 From 9f759d41b3ed8feb550473027e674edf46ce7b94 Mon Sep 17 00:00:00 2001 From: Thomas Falcon Date: Mon, 7 Oct 2024 14:47:58 -0500 Subject: perf test x86: Fix typo in intel-pt-test Change function name "is_hydrid" to "is_hybrid". Signed-off-by: Thomas Falcon Reviewed-by: Adrian Hunter Link: https://lore.kernel.org/r/20241007194758.78659-1-thomas.falcon@intel.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/tests/intel-pt-test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/tests/intel-pt-test.c b/tools/perf/arch/x86/tests/intel-pt-test.c index 09d61fa736e3..b217ed67cd4e 100644 --- a/tools/perf/arch/x86/tests/intel-pt-test.c +++ b/tools/perf/arch/x86/tests/intel-pt-test.c @@ -375,7 +375,7 @@ static int get_pt_caps(int cpu, struct pt_caps *caps) return 0; } -static bool is_hydrid(void) +static bool is_hybrid(void) { unsigned int eax, ebx, ecx, edx = 0; bool result; @@ -441,7 +441,7 @@ int test__intel_pt_hybrid_compat(struct test_suite *test, int subtest) int ret = TEST_OK; int cpu; - if (!is_hydrid()) { + if (!is_hybrid()) { test->test_cases[subtest].skip_reason = "not hybrid"; return TEST_SKIP; } -- cgit v1.2.3 From 4073213488be542f563eb4b2457ab4cbcfc2b738 Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Tue, 8 Oct 2024 18:15:54 -0700 Subject: libbpf: fix sym_is_subprog() logic for weak global subprogs sym_is_subprog() is incorrectly rejecting relocations against *weak* global subprogs. Fix that by realizing that STB_WEAK is also a global function. While it seems like verifier doesn't support taking an address of non-static subprog right now, it's still best to fix support for it on libbpf side, otherwise users will get a very confusing error during BPF skeleton generation or static linking due to misinterpreted relocation: libbpf: prog 'handle_tp': bad map relo against 'foo' in section '.text' Error: failed to open BPF object file: Relocation failed It's clearly not a map relocation, but is treated and reported as such without this fix. Fixes: 53eddb5e04ac ("libbpf: Support subprog address relocation") Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241009011554.880168-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/libbpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 712b95e8891b..05ad264ff09b 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -4013,7 +4013,7 @@ static bool sym_is_subprog(const Elf64_Sym *sym, int text_shndx) return true; /* global function */ - return bind == STB_GLOBAL && type == STT_FUNC; + return (bind == STB_GLOBAL || bind == STB_WEAK) && type == STT_FUNC; } static int find_extern_btf_id(const struct btf *btf, const char *ext_name) -- cgit v1.2.3 From b3ea416419c83ba4a042163f17e0fd8bac417f1a Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Wed, 9 Oct 2024 10:09:57 +0200 Subject: testing: net-drv: add basic shaper test Leverage a basic/dummy netdevsim implementation to do functional coverage for NL interface. Reviewed-by: Jiri Pirko Signed-off-by: Paolo Abeni Link: https://patch.msgid.link/43092afbf38365c796088bf8fc155e523ab434ae.1728460186.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/Makefile | 1 + tools/testing/selftests/drivers/net/shaper.py | 461 +++++++++++++++++++++++++ tools/testing/selftests/net/lib/py/__init__.py | 1 + tools/testing/selftests/net/lib/py/ynl.py | 5 + 4 files changed, 468 insertions(+) create mode 100755 tools/testing/selftests/drivers/net/shaper.py (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile index 39fb97a8c1df..25aec5c081df 100644 --- a/tools/testing/selftests/drivers/net/Makefile +++ b/tools/testing/selftests/drivers/net/Makefile @@ -9,6 +9,7 @@ TEST_PROGS := \ ping.py \ queues.py \ stats.py \ + shaper.py # end of TEST_PROGS include ../../lib.mk diff --git a/tools/testing/selftests/drivers/net/shaper.py b/tools/testing/selftests/drivers/net/shaper.py new file mode 100755 index 000000000000..11310f19bfa0 --- /dev/null +++ b/tools/testing/selftests/drivers/net/shaper.py @@ -0,0 +1,461 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_true, KsftSkipEx +from lib.py import EthtoolFamily, NetshaperFamily +from lib.py import NetDrvEnv +from lib.py import NlError +from lib.py import cmd + +def get_shapers(cfg, nl_shaper) -> None: + try: + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + + # Default configuration: no shapers configured. + ksft_eq(len(shapers), 0) + +def get_caps(cfg, nl_shaper) -> None: + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex}, dump=True) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + + # Each device implementing shaper support must support some + # features in at least a scope. + ksft_true(len(caps)> 0) + +def set_qshapers(cfg, nl_shaper) -> None: + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'queue'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-bw-max' in caps or not 'support-metric-bps' in caps: + raise KsftSkipEx("device does not support queue scope shapers with bw_max and metric bps") + + cfg.queues = True; + netnl = EthtoolFamily() + channels = netnl.channels_get({'header': {'dev-index': cfg.ifindex}}) + if channels['combined-count'] == 0: + cfg.rx_type = 'rx' + cfg.nr_queues = channels['rx-count'] + else: + cfg.rx_type = 'combined' + cfg.nr_queues = channels['combined-count'] + if cfg.nr_queues < 3: + raise KsftSkipEx(f"device does not support enough queues min 3 found {cfg.nr_queues}") + + nl_shaper.set({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 10000}) + nl_shaper.set({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 2}, + 'metric': 'bps', + 'bw-max': 20000}) + + # Querying a specific shaper not yet configured must fail. + raised = False + try: + shaper_q0 = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 0}}) + except (NlError): + raised = True + ksft_eq(raised, True) + + shaper_q1 = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + ksft_eq(shaper_q1, {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 10000}) + + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 10000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 2}, + 'metric': 'bps', + 'bw-max': 20000}]) + +def del_qshapers(cfg, nl_shaper) -> None: + if not cfg.queues: + raise KsftSkipEx("queue shapers not supported by device, skipping delete") + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 2}}) + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 0) + +def set_nshapers(cfg, nl_shaper) -> None: + # Check required features. + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'netdev'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-bw-max' in caps or not 'support-metric-bps' in caps: + raise KsftSkipEx("device does not support nested netdev scope shapers with weight") + + cfg.netdev = True; + nl_shaper.set({'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev', 'id': 0}, + 'bw-max': 100000}) + + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev'}, + 'metric': 'bps', + 'bw-max': 100000}]) + +def del_nshapers(cfg, nl_shaper) -> None: + if not cfg.netdev: + raise KsftSkipEx("netdev shaper not supported by device, skipping delete") + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev'}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 0) + +def basic_groups(cfg, nl_shaper) -> None: + if not cfg.netdev: + raise KsftSkipEx("netdev shaper not supported by the device") + if cfg.nr_queues < 3: + raise KsftSkipEx(f"netdev does not have enough queues min 3 reported {cfg.nr_queues}") + + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'queue'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-weight' in caps: + raise KsftSkipEx("device does not support queue scope shapers with weight") + + node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 1}, + 'weight': 1}, + {'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}], + 'handle': {'scope':'netdev'}, + 'metric': 'bps', + 'bw-max': 10000}) + ksft_eq(node_handle, {'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev'}}) + + shaper = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + ksft_eq(shaper, {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'weight': 1 }) + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 2}}) + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + + # Deleting all the leaves shaper does not affect the node one + # when the latter has 'netdev' scope. + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 1) + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev'}}) + +def qgroups(cfg, nl_shaper) -> None: + if cfg.nr_queues < 4: + raise KsftSkipEx(f"netdev does not have enough queues min 4 reported {cfg.nr_queues}") + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'node'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-bw-max' in caps or not 'support-metric-bps' in caps: + raise KsftSkipEx("device does not support node scope shapers with bw_max and metric bps") + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'queue'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-nesting' in caps or not 'support-weight' in caps or not 'support-metric-bps' in caps: + raise KsftSkipEx("device does not support nested queue scope shapers with weight") + + cfg.groups = True; + node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}], + 'handle': {'scope':'node'}, + 'metric': 'bps', + 'bw-max': 10000}) + node_id = node_handle['handle']['id'] + + shaper = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + ksft_eq(shaper, {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}) + shaper = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': node_id}}) + ksft_eq(shaper, {'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': node_id}, + 'parent': {'scope': 'netdev'}, + 'metric': 'bps', + 'bw-max': 10000}) + + # Grouping to a specified, not existing node scope shaper must fail + raised = False + try: + nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 3}, + 'weight': 3}], + 'handle': {'scope':'node', 'id': node_id + 1}, + 'metric': 'bps', + 'bw-max': 10000}) + + except (NlError): + raised = True + ksft_eq(raised, True) + + # Add to an existing node + node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 3}, + 'weight': 4}], + 'handle': {'scope':'node', 'id': node_id}}) + ksft_eq(node_handle, {'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': node_id}}) + + shaper = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 3}}) + ksft_eq(shaper, {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 3}, + 'weight': 4}) + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 2}}) + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + + # Deleting a non empty node will move the leaves downstream. + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': node_id}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 3}, + 'weight': 4}]) + + # Finish and verify the complete cleanup. + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 3}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 0) + +def delegation(cfg, nl_shaper) -> None: + if not cfg.groups: + raise KsftSkipEx("device does not support node scope") + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'node'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("node scope shapers not supported by the device") + raise + if not 'support-nesting' in caps: + raise KsftSkipEx("device does not support node scope shapers nesting") + + node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}, + {'handle': {'scope': 'queue', 'id': 3}, + 'weight': 1}], + 'handle': {'scope':'node'}, + 'metric': 'bps', + 'bw-max': 10000}) + node_id = node_handle['handle']['id'] + + # Create the nested node and validate the hierarchy + nested_node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}], + 'handle': {'scope':'node'}, + 'metric': 'bps', + 'bw-max': 5000}) + nested_node_id = nested_node_handle['handle']['id'] + ksft_true(nested_node_id != node_id) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': nested_node_id}, + 'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': nested_node_id}, + 'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 3}, + 'weight': 1}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'node', 'id': node_id}, + 'metric': 'bps', + 'bw-max': 10000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'node', 'id': nested_node_id}, + 'metric': 'bps', + 'bw-max': 5000}]) + + # Deleting a non empty node will move the leaves downstream. + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': nested_node_id}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 3}, + 'weight': 1}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'node', 'id': node_id}, + 'metric': 'bps', + 'bw-max': 10000}]) + + # Final cleanup. + for i in range(1, 4): + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': i}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 0) + +def queue_update(cfg, nl_shaper) -> None: + if cfg.nr_queues < 4: + raise KsftSkipEx(f"netdev does not have enough queues min 4 reported {cfg.nr_queues}") + if not cfg.queues: + raise KsftSkipEx("device does not support queue scope") + + for i in range(3): + nl_shaper.set({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': i}, + 'metric': 'bps', + 'bw-max': (i + 1) * 1000}) + # Delete a channel, with no shapers configured on top of the related + # queue: no changes expected + cmd(f"ethtool -L {cfg.dev['ifname']} {cfg.rx_type} 3", timeout=10) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 0}, + 'metric': 'bps', + 'bw-max': 1000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 2000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 2}, + 'metric': 'bps', + 'bw-max': 3000}]) + + # Delete a channel, with a shaper configured on top of the related + # queue: the shaper must be deleted, too + cmd(f"ethtool -L {cfg.dev['ifname']} {cfg.rx_type} 2", timeout=10) + + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 0}, + 'metric': 'bps', + 'bw-max': 1000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 2000}]) + + # Restore the original channels number, no expected changes + cmd(f"ethtool -L {cfg.dev['ifname']} {cfg.rx_type} {cfg.nr_queues}", timeout=10) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 0}, + 'metric': 'bps', + 'bw-max': 1000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 2000}]) + + # Final cleanup. + for i in range(0, 2): + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': i}}) + +def main() -> None: + with NetDrvEnv(__file__, queue_count=4) as cfg: + cfg.queues = False + cfg.netdev = False + cfg.groups = False + cfg.nr_queues = 0 + ksft_run([get_shapers, + get_caps, + set_qshapers, + del_qshapers, + set_nshapers, + del_nshapers, + basic_groups, + qgroups, + delegation, + queue_update], args=(cfg, NetshaperFamily())) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/net/lib/py/__init__.py b/tools/testing/selftests/net/lib/py/__init__.py index b6d498d125fe..54d8f5eba810 100644 --- a/tools/testing/selftests/net/lib/py/__init__.py +++ b/tools/testing/selftests/net/lib/py/__init__.py @@ -6,3 +6,4 @@ from .netns import NetNS from .nsim import * from .utils import * from .ynl import NlError, YnlFamily, EthtoolFamily, NetdevFamily, RtnlFamily +from .ynl import NetshaperFamily diff --git a/tools/testing/selftests/net/lib/py/ynl.py b/tools/testing/selftests/net/lib/py/ynl.py index 1ace58370c06..a0d689d58c57 100644 --- a/tools/testing/selftests/net/lib/py/ynl.py +++ b/tools/testing/selftests/net/lib/py/ynl.py @@ -47,3 +47,8 @@ class NetdevFamily(YnlFamily): def __init__(self): super().__init__((SPEC_PATH / Path('netdev.yaml')).as_posix(), schema='') + +class NetshaperFamily(YnlFamily): + def __init__(self): + super().__init__((SPEC_PATH / Path('net_shaper.yaml')).as_posix(), + schema='') -- cgit v1.2.3 From 5bd48a3a14df4b3ee1be0757efcc0f40d4f57b35 Mon Sep 17 00:00:00 2001 From: Matteo Croce Date: Thu, 10 Oct 2024 04:56:52 +0100 Subject: bpf: fix argument type in bpf_loop documentation The `index` argument to bpf_loop() is threaded as an u64. This lead in a subtle verifier denial where clang cloned the argument in another register[1]. [1] https://github.com/systemd/systemd/pull/34650#issuecomment-2401092895 Signed-off-by: Matteo Croce Link: https://lore.kernel.org/r/20241010035652.17830-1-technoboy85@gmail.com Signed-off-by: Alexei Starovoitov --- tools/include/uapi/linux/bpf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 7610883c8191..5937c39069ba 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -5371,7 +5371,7 @@ union bpf_attr { * Currently, the **flags** must be 0. Currently, nr_loops is * limited to 1 << 23 (~8 million) loops. * - * long (\*callback_fn)(u32 index, void \*ctx); + * long (\*callback_fn)(u64 index, void \*ctx); * * where **index** is the current index in the loop. The index * is zero-indexed. -- cgit v1.2.3 From c6ca31981b545ad3081007b6aa88b6aab1b0cece Mon Sep 17 00:00:00 2001 From: Martin Kelly Date: Thu, 10 Oct 2024 12:33:01 -0700 Subject: bpf: Update bpf_override_return() comment The documentation says CONFIG_FUNCTION_ERROR_INJECTION is supported only on x86. This was presumably true at the time of writing, but it's now supported on many other architectures too. Drop this statement, since it's not correct anymore and it fits better in other documentation anyway. Signed-off-by: Martin Kelly Link: https://lore.kernel.org/r/20241010193301.995909-1-martin.kelly@crowdstrike.com Signed-off-by: Alexei Starovoitov --- tools/include/uapi/linux/bpf.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'tools') diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 5937c39069ba..0e49ce2981a0 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -3103,10 +3103,6 @@ union bpf_attr { * with the **CONFIG_BPF_KPROBE_OVERRIDE** configuration * option, and in this case it only works on functions tagged with * **ALLOW_ERROR_INJECTION** in the kernel code. - * - * Also, the helper is only available for the architectures having - * the CONFIG_FUNCTION_ERROR_INJECTION option. As of this writing, - * x86 architecture is the only one to support this feature. * Return * 0 * -- cgit v1.2.3 From 099a84019b64406a83b8d4f9f63235dbc16ed5b8 Mon Sep 17 00:00:00 2001 From: Jan Stancek Date: Thu, 10 Oct 2024 11:32:58 +0200 Subject: tools/rtla: drop __NR_sched_getattr It's not used since commit 084ce16df0f0 ("tools/rtla: Remove unused sched_getattr() function"). Link: https://lore.kernel.org/c355dc9ad23470098d6a8d0f31fbd702551c9ea8.1728552769.git.jstancek@redhat.com Signed-off-by: Jan Stancek Reviewed-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/utils.c | 32 ++++++++++++++------------------ 1 file changed, 14 insertions(+), 18 deletions(-) (limited to 'tools') diff --git a/tools/tracing/rtla/src/utils.c b/tools/tracing/rtla/src/utils.c index 9ac71a66840c..05b2b3fc005e 100644 --- a/tools/tracing/rtla/src/utils.c +++ b/tools/tracing/rtla/src/utils.c @@ -211,24 +211,20 @@ long parse_ns_duration(char *val) /* * This is a set of helper functions to use SCHED_DEADLINE. */ -#ifdef __x86_64__ -# define __NR_sched_setattr 314 -# define __NR_sched_getattr 315 -#elif __i386__ -# define __NR_sched_setattr 351 -# define __NR_sched_getattr 352 -#elif __arm__ -# define __NR_sched_setattr 380 -# define __NR_sched_getattr 381 -#elif __aarch64__ || __riscv -# define __NR_sched_setattr 274 -# define __NR_sched_getattr 275 -#elif __powerpc__ -# define __NR_sched_setattr 355 -# define __NR_sched_getattr 356 -#elif __s390x__ -# define __NR_sched_setattr 345 -# define __NR_sched_getattr 346 +#ifndef __NR_sched_setattr +# ifdef __x86_64__ +# define __NR_sched_setattr 314 +# elif __i386__ +# define __NR_sched_setattr 351 +# elif __arm__ +# define __NR_sched_setattr 380 +# elif __aarch64__ || __riscv +# define __NR_sched_setattr 274 +# elif __powerpc__ +# define __NR_sched_setattr 355 +# elif __s390x__ +# define __NR_sched_setattr 345 +# endif #endif #define SCHED_DEADLINE 6 -- cgit v1.2.3 From 0eecee340672c4b512f6f4a8c6add26df05d130c Mon Sep 17 00:00:00 2001 From: Jan Stancek Date: Thu, 10 Oct 2024 17:09:48 +0200 Subject: tools/rtla: fix collision with glibc sched_attr/sched_set_attr MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit glibc commit 21571ca0d703 ("Linux: Add the sched_setattr and sched_getattr functions") now also provides 'struct sched_attr' and sched_setattr() which collide with the ones from rtla. In file included from src/trace.c:11: src/utils.h:49:8: error: redefinition of ‘struct sched_attr’ 49 | struct sched_attr { | ^~~~~~~~~~ In file included from /usr/include/bits/sched.h:60, from /usr/include/sched.h:43, from /usr/include/tracefs/tracefs.h:10, from src/trace.c:4: /usr/include/linux/sched/types.h:98:8: note: originally defined here 98 | struct sched_attr { | ^~~~~~~~~~ Define 'struct sched_attr' conditionally, similar to what strace did: https://lore.kernel.org/all/20240930222913.3981407-1-raj.khem@gmail.com/ and rename rtla's version of sched_setattr() to avoid collision. Link: https://lore.kernel.org/8088f66a7a57c1b209cd8ae0ae7c336a7f8c930d.1728572865.git.jstancek@redhat.com Signed-off-by: Jan Stancek Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/utils.c | 4 ++-- tools/tracing/rtla/src/utils.h | 2 ++ 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/tracing/rtla/src/utils.c b/tools/tracing/rtla/src/utils.c index 05b2b3fc005e..6fae234aaf36 100644 --- a/tools/tracing/rtla/src/utils.c +++ b/tools/tracing/rtla/src/utils.c @@ -229,7 +229,7 @@ long parse_ns_duration(char *val) #define SCHED_DEADLINE 6 -static inline int sched_setattr(pid_t pid, const struct sched_attr *attr, +static inline int syscall_sched_setattr(pid_t pid, const struct sched_attr *attr, unsigned int flags) { return syscall(__NR_sched_setattr, pid, attr, flags); } @@ -239,7 +239,7 @@ int __set_sched_attr(int pid, struct sched_attr *attr) int flags = 0; int retval; - retval = sched_setattr(pid, attr, flags); + retval = syscall_sched_setattr(pid, attr, flags); if (retval < 0) { err_msg("Failed to set sched attributes to the pid %d: %s\n", pid, strerror(errno)); diff --git a/tools/tracing/rtla/src/utils.h b/tools/tracing/rtla/src/utils.h index d44513e6c66a..99c9cf81bcd0 100644 --- a/tools/tracing/rtla/src/utils.h +++ b/tools/tracing/rtla/src/utils.h @@ -46,6 +46,7 @@ update_sum(unsigned long long *a, unsigned long long *b) *a += *b; } +#ifndef SCHED_ATTR_SIZE_VER0 struct sched_attr { uint32_t size; uint32_t sched_policy; @@ -56,6 +57,7 @@ struct sched_attr { uint64_t sched_deadline; uint64_t sched_period; }; +#endif /* SCHED_ATTR_SIZE_VER0 */ int parse_prio(char *arg, struct sched_attr *sched_param); int parse_cpu_set(char *cpu_list, cpu_set_t *set); -- cgit v1.2.3 From ac8d16b2d3772934f4cba44cb01bad05b4b2864c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Wed, 9 Oct 2024 12:12:07 +0200 Subject: selftests/bpf: fix bpf_map_redirect call for cpu map test MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit xdp_redir_prog currently redirects packets based on the entry at index 1 in cpu_map, but the corresponding test only manipulates the entry at index 0. This does not really affect the test in its current form since the program is detached before having the opportunity to execute, but it needs to be fixed before being able improve the corresponding test (ie, not only test attach/detach but also the redirect feature) Fix this XDP program by making it redirect packets based on entry 0 in cpu_map instead of entry 1. Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241009-convert_xdp_tests-v3-1-51cea913710c@bootlin.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c b/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c index 20ec6723df18..d848fe96924e 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c @@ -15,7 +15,7 @@ struct { SEC("xdp") int xdp_redir_prog(struct xdp_md *ctx) { - return bpf_redirect_map(&cpu_map, 1, 0); + return bpf_redirect_map(&cpu_map, 0, 0); } SEC("xdp") -- cgit v1.2.3 From d5fbcf46ee82574aee443423f3e4132d1154372b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Wed, 9 Oct 2024 12:12:08 +0200 Subject: selftests/bpf: make xdp_cpumap_attach keep redirect prog attached MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Current test only checks attach/detach on cpu map type program, and so does not check that it can be properly executed, neither that it redirects correctly. Update the existing test to extend its coverage: - keep the redirected program loaded - try to execute it through bpf_prog_test_run_opts with some dummy context While at it, bring the following minor improvements: - isolate test interface in its own namespace Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241009-convert_xdp_tests-v3-2-51cea913710c@bootlin.com Signed-off-by: Martin KaFai Lau --- .../selftests/bpf/prog_tests/xdp_cpumap_attach.c | 41 +++++++++++++++++----- 1 file changed, 33 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c index 481626a875d1..88e8a886d1e6 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c @@ -2,35 +2,41 @@ #include #include #include +#include #include "test_xdp_with_cpumap_frags_helpers.skel.h" #include "test_xdp_with_cpumap_helpers.skel.h" #define IFINDEX_LO 1 +#define TEST_NS "cpu_attach_ns" static void test_xdp_with_cpumap_helpers(void) { - struct test_xdp_with_cpumap_helpers *skel; + struct test_xdp_with_cpumap_helpers *skel = NULL; struct bpf_prog_info info = {}; __u32 len = sizeof(info); struct bpf_cpumap_val val = { .qsize = 192, }; - int err, prog_fd, map_fd; + int err, prog_fd, prog_redir_fd, map_fd; + struct nstoken *nstoken = NULL; __u32 idx = 0; + SYS(out_close, "ip netns add %s", TEST_NS); + nstoken = open_netns(TEST_NS); + if (!ASSERT_OK_PTR(nstoken, "open_netns")) + goto out_close; + SYS(out_close, "ip link set dev lo up"); + skel = test_xdp_with_cpumap_helpers__open_and_load(); if (!ASSERT_OK_PTR(skel, "test_xdp_with_cpumap_helpers__open_and_load")) return; - prog_fd = bpf_program__fd(skel->progs.xdp_redir_prog); - err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL); + prog_redir_fd = bpf_program__fd(skel->progs.xdp_redir_prog); + err = bpf_xdp_attach(IFINDEX_LO, prog_redir_fd, XDP_FLAGS_SKB_MODE, NULL); if (!ASSERT_OK(err, "Generic attach of program with 8-byte CPUMAP")) goto out_close; - err = bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); - ASSERT_OK(err, "XDP program detach"); - prog_fd = bpf_program__fd(skel->progs.xdp_dummy_cm); map_fd = bpf_map__fd(skel->maps.cpu_map); err = bpf_prog_get_info_by_fd(prog_fd, &info, &len); @@ -45,6 +51,23 @@ static void test_xdp_with_cpumap_helpers(void) ASSERT_OK(err, "Read cpumap entry"); ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to cpumap entry prog_id"); + /* send a packet to trigger any potential bugs in there */ + char data[10] = {}; + DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts, + .data_in = &data, + .data_size_in = 10, + .flags = BPF_F_TEST_XDP_LIVE_FRAMES, + .repeat = 1, + ); + err = bpf_prog_test_run_opts(prog_redir_fd, &opts); + ASSERT_OK(err, "XDP test run"); + + /* wait for the packets to be flushed */ + kern_sync_rcu(); + + err = bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); + ASSERT_OK(err, "XDP program detach"); + /* can not attach BPF_XDP_CPUMAP program to a device */ err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL); if (!ASSERT_NEQ(err, 0, "Attach of BPF_XDP_CPUMAP program")) @@ -65,6 +88,8 @@ static void test_xdp_with_cpumap_helpers(void) ASSERT_NEQ(err, 0, "Add BPF_XDP program with frags to cpumap entry"); out_close: + close_netns(nstoken); + SYS_NOFAIL("ip netns del %s", TEST_NS); test_xdp_with_cpumap_helpers__destroy(skel); } @@ -111,7 +136,7 @@ out_close: test_xdp_with_cpumap_frags_helpers__destroy(skel); } -void serial_test_xdp_cpumap_attach(void) +void test_xdp_cpumap_attach(void) { if (test__start_subtest("CPUMAP with programs in entries")) test_xdp_with_cpumap_helpers(); -- cgit v1.2.3 From d124d984c8a2d677e1cea6740a01ccdd0371a38d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Wed, 9 Oct 2024 12:12:09 +0200 Subject: selftests/bpf: check program redirect in xdp_cpumap_attach MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit xdp_cpumap_attach, in its current form, only checks that an xdp cpumap program can be executed, but not that it performs correctly the cpu redirect as configured by userspace (bpf_prog_test_run_opts will return success even if the redirect program returns an error) Add a check to ensure that the program performs the configured redirect as well. The check is based on a global variable incremented by a chained program executed only if the redirect program properly executes. Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241009-convert_xdp_tests-v3-3-51cea913710c@bootlin.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c | 5 ++++- tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c | 5 +++++ 2 files changed, 9 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c index 88e8a886d1e6..c7f74f068e78 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c @@ -62,8 +62,11 @@ static void test_xdp_with_cpumap_helpers(void) err = bpf_prog_test_run_opts(prog_redir_fd, &opts); ASSERT_OK(err, "XDP test run"); - /* wait for the packets to be flushed */ + /* wait for the packets to be flushed, then check that redirect has been + * performed + */ kern_sync_rcu(); + ASSERT_NEQ(skel->bss->redirect_count, 0, "redirected packets"); err = bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL); ASSERT_OK(err, "XDP program detach"); diff --git a/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c b/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c index d848fe96924e..3619239b01b7 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c @@ -12,6 +12,8 @@ struct { __uint(max_entries, 4); } cpu_map SEC(".maps"); +__u32 redirect_count = 0; + SEC("xdp") int xdp_redir_prog(struct xdp_md *ctx) { @@ -27,6 +29,9 @@ int xdp_dummy_prog(struct xdp_md *ctx) SEC("xdp/cpumap") int xdp_dummy_cm(struct xdp_md *ctx) { + if (bpf_get_smp_processor_id() == 0) + redirect_count++; + if (ctx->ingress_ifindex == IFINDEX_LO) return XDP_DROP; -- cgit v1.2.3 From ba4fb3b3f7d891ba2fb82fe344d5068f87d7481c Mon Sep 17 00:00:00 2001 From: Zhu Jun Date: Wed, 9 Oct 2024 22:57:37 -0700 Subject: selftests/bpf: Removed redundant fd after close in bpf_prog_load_log_buf Removed unnecessary `fd = -1` assignments after closing file descriptors. because it will be assigned by the function bpf_prog_load().This improves code readability and removes redundant operations. Signed-off-by: Zhu Jun Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241010055737.4292-1-zhujun2@cmss.chinamobile.com --- tools/testing/selftests/bpf/prog_tests/log_buf.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/log_buf.c b/tools/testing/selftests/bpf/prog_tests/log_buf.c index 27676a04d0b6..169ce689b97c 100644 --- a/tools/testing/selftests/bpf/prog_tests/log_buf.c +++ b/tools/testing/selftests/bpf/prog_tests/log_buf.c @@ -169,7 +169,6 @@ static void bpf_prog_load_log_buf(void) ASSERT_GE(fd, 0, "good_fd1"); if (fd >= 0) close(fd); - fd = -1; /* log_level == 2 should always fill log_buf, even for good prog */ log_buf[0] = '\0'; @@ -180,7 +179,6 @@ static void bpf_prog_load_log_buf(void) ASSERT_GE(fd, 0, "good_fd2"); if (fd >= 0) close(fd); - fd = -1; /* log_level == 0 should fill log_buf for bad prog */ log_buf[0] = '\0'; @@ -191,7 +189,6 @@ static void bpf_prog_load_log_buf(void) ASSERT_LT(fd, 0, "bad_fd"); if (fd >= 0) close(fd); - fd = -1; free(log_buf); } -- cgit v1.2.3 From c7c1bb78f3eec716bc35f58d74592331cc3281b2 Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Wed, 9 Oct 2024 01:39:38 +0100 Subject: perf tools: Remove unused color_fwrite_lines color_fwrite_lines() was added by 2009's commit 8fc0321f1ad0 ("perf_counter tools: Add color terminal output support") but has never been used. Remove it. Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20241009003938.254936-1-linux@treblig.org Signed-off-by: Namhyung Kim --- tools/perf/util/color.c | 28 ---------------------------- tools/perf/util/color.h | 1 - 2 files changed, 29 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c index bffbdd216a6a..e51f0a676a22 100644 --- a/tools/perf/util/color.c +++ b/tools/perf/util/color.c @@ -93,34 +93,6 @@ int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) return r; } -/* - * This function splits the buffer by newlines and colors the lines individually. - * - * Returns 0 on success. - */ -int color_fwrite_lines(FILE *fp, const char *color, - size_t count, const char *buf) -{ - if (!*color) - return fwrite(buf, count, 1, fp) != 1; - - while (count) { - char *p = memchr(buf, '\n', count); - - if (p != buf && (fputs(color, fp) < 0 || - fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 || - fputs(PERF_COLOR_RESET, fp) < 0)) - return -1; - if (!p) - return 0; - if (fputc('\n', fp) < 0) - return -1; - count -= p + 1 - buf; - buf = p + 1; - } - return 0; -} - const char *get_percent_color(double percent) { const char *color = PERF_COLOR_NORMAL; diff --git a/tools/perf/util/color.h b/tools/perf/util/color.h index 01f7bed21c9b..aecf56dae73f 100644 --- a/tools/perf/util/color.h +++ b/tools/perf/util/color.h @@ -39,7 +39,6 @@ int color_vsnprintf(char *bf, size_t size, const char *color, int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args); int color_fprintf(FILE *fp, const char *color, const char *fmt, ...); int color_snprintf(char *bf, size_t size, const char *color, const char *fmt, ...); -int color_fwrite_lines(FILE *fp, const char *color, size_t count, const char *buf); int value_color_snprintf(char *bf, size_t size, const char *fmt, double value); int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...); int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...); -- cgit v1.2.3 From c051220d38463cfe8a248d204461beb3ed52b4ea Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:04 -0700 Subject: perf pmu: Simplify an asprintf error message Use ifs rather than ?: to avoid a large compound statement. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-2-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/pmu.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 8993b5853687..cb2eb2407de5 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1466,13 +1466,12 @@ static int pmu_config_term(const struct perf_pmu *pmu, if (err) { char *err_str; - parse_events_error__handle(err, term->err_val, - asprintf(&err_str, - "value too big for format (%s), maximum is %llu", - format->name, (unsigned long long)max_val) < 0 - ? strdup("value too big for format") - : err_str, - NULL); + if (asprintf(&err_str, + "value too big for format (%s), maximum is %llu", + format->name, (unsigned long long)max_val) < 0) { + err_str = strdup("value too big for format"); + } + parse_events_error__handle(err, term->err_val, err_str, /*help=*/NULL); return -EINVAL; } /* -- cgit v1.2.3 From c798f72c7a67a4c089142d4b16c8b9587e6db5e6 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:05 -0700 Subject: perf pmu: Allow hardcoded terms to be applied to attributes Hard coded terms like "config=10" are skipped by perf_pmu__config assuming they were already applied to a perf_event_attr by parse event's config_attr function. When doing a reverse number to name lookup in perf_pmu__name_from_config, as the hardcoded terms aren't applied the config value is incorrect leading to misses or false matches. Fix this by adding a parameter to have perf_pmu__config apply hardcoded terms too (not just in parse event's config_term_common). Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-3-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/intel-pt.c | 3 +- tools/perf/tests/pmu.c | 3 +- tools/perf/util/parse-events.c | 4 ++- tools/perf/util/pmu.c | 56 +++++++++++++++++++++++++++++++------ tools/perf/util/pmu.h | 4 ++- 5 files changed, 58 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index ea510a7486b1..8f235d8b67b6 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -75,7 +75,8 @@ static int intel_pt_parse_terms_with_default(const struct perf_pmu *pmu, goto out_free; attr.config = *config; - err = perf_pmu__config_terms(pmu, &attr, &terms, /*zero=*/true, /*err=*/NULL); + err = perf_pmu__config_terms(pmu, &attr, &terms, /*zero=*/true, /*apply_hardcoded=*/false, + /*err=*/NULL); if (err) goto out_free; diff --git a/tools/perf/tests/pmu.c b/tools/perf/tests/pmu.c index be18506f6a24..6a681e3fb552 100644 --- a/tools/perf/tests/pmu.c +++ b/tools/perf/tests/pmu.c @@ -176,7 +176,8 @@ static int test__pmu_format(struct test_suite *test __maybe_unused, int subtest } memset(&attr, 0, sizeof(attr)); - ret = perf_pmu__config_terms(pmu, &attr, &terms, /*zero=*/false, /*err=*/NULL); + ret = perf_pmu__config_terms(pmu, &attr, &terms, /*zero=*/false, + /*apply_hardcoded=*/false, /*err=*/NULL); if (ret) { pr_err("perf_pmu__config_terms failed"); goto err_out; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index e96cf13dc396..6ae611e70fae 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1546,7 +1546,9 @@ static int parse_events_add_pmu(struct parse_events_state *parse_state, return -ENOMEM; } - if (perf_pmu__config(pmu, &attr, &parsed_terms, parse_state->error)) { + /* Skip configuring hard coded terms that were applied by config_attr. */ + if (perf_pmu__config(pmu, &attr, &parsed_terms, /*apply_hardcoded=*/false, + parse_state->error)) { free_config_terms(&config_terms); parse_events_terms__exit(&parsed_terms); return -EINVAL; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index cb2eb2407de5..a1c7e879cb2f 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1366,7 +1366,8 @@ static int pmu_config_term(const struct perf_pmu *pmu, struct perf_event_attr *attr, struct parse_events_term *term, struct parse_events_terms *head_terms, - bool zero, struct parse_events_error *err) + bool zero, bool apply_hardcoded, + struct parse_events_error *err) { struct perf_pmu_format *format; __u64 *vp; @@ -1380,11 +1381,46 @@ static int pmu_config_term(const struct perf_pmu *pmu, return 0; /* - * Hardcoded terms should be already in, so nothing - * to be done for them. + * Hardcoded terms are generally handled in event parsing, which + * traditionally have had to handle not having a PMU. An alias may + * have hard coded config values, optionally apply them below. */ - if (parse_events__is_hardcoded_term(term)) + if (parse_events__is_hardcoded_term(term)) { + /* Config terms set all bits in the config. */ + DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); + + if (!apply_hardcoded) + return 0; + + bitmap_fill(bits, PERF_PMU_FORMAT_BITS); + + switch (term->type_term) { + case PARSE_EVENTS__TERM_TYPE_CONFIG: + assert(term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + pmu_format_value(bits, term->val.num, &attr->config, zero); + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG1: + assert(term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + pmu_format_value(bits, term->val.num, &attr->config1, zero); + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG2: + assert(term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + pmu_format_value(bits, term->val.num, &attr->config2, zero); + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG3: + assert(term->type_val == PARSE_EVENTS__TERM_TYPE_NUM); + pmu_format_value(bits, term->val.num, &attr->config3, zero); + break; + case PARSE_EVENTS__TERM_TYPE_USER: /* Not hardcoded. */ + return -EINVAL; + case PARSE_EVENTS__TERM_TYPE_NAME ... PARSE_EVENTS__TERM_TYPE_HARDWARE: + /* Skip non-config terms. */ + break; + default: + break; + } return 0; + } format = pmu_find_format(&pmu->format, term->config); if (!format) { @@ -1487,12 +1523,13 @@ static int pmu_config_term(const struct perf_pmu *pmu, int perf_pmu__config_terms(const struct perf_pmu *pmu, struct perf_event_attr *attr, struct parse_events_terms *terms, - bool zero, struct parse_events_error *err) + bool zero, bool apply_hardcoded, + struct parse_events_error *err) { struct parse_events_term *term; list_for_each_entry(term, &terms->terms, list) { - if (pmu_config_term(pmu, attr, term, terms, zero, err)) + if (pmu_config_term(pmu, attr, term, terms, zero, apply_hardcoded, err)) return -EINVAL; } @@ -1506,6 +1543,7 @@ int perf_pmu__config_terms(const struct perf_pmu *pmu, */ int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, struct parse_events_terms *head_terms, + bool apply_hardcoded, struct parse_events_error *err) { bool zero = !!pmu->perf_event_attr_init_default; @@ -1514,7 +1552,7 @@ int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, if (perf_pmu__is_fake(pmu)) return 0; - return perf_pmu__config_terms(pmu, attr, head_terms, zero, err); + return perf_pmu__config_terms(pmu, attr, head_terms, zero, apply_hardcoded, err); } static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, @@ -2283,7 +2321,9 @@ const char *perf_pmu__name_from_config(struct perf_pmu *pmu, u64 config) pmu_add_cpu_aliases(pmu); list_for_each_entry(event, &pmu->aliases, list) { struct perf_event_attr attr = {.config = 0,}; - int ret = perf_pmu__config(pmu, &attr, &event->terms, NULL); + + int ret = perf_pmu__config(pmu, &attr, &event->terms, /*apply_hardcoded=*/true, + /*err=*/NULL); if (ret == 0 && config == attr.config) return event->name; diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index d352d53b8d55..c70317d3fb04 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -206,11 +206,13 @@ typedef int (*pmu_format_callback)(void *state, const char *name, int config, void pmu_add_sys_aliases(struct perf_pmu *pmu); int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, struct parse_events_terms *head_terms, + bool apply_hardcoded, struct parse_events_error *error); int perf_pmu__config_terms(const struct perf_pmu *pmu, struct perf_event_attr *attr, struct parse_events_terms *terms, - bool zero, struct parse_events_error *error); + bool zero, bool apply_hardcoded, + struct parse_events_error *error); __u64 perf_pmu__format_bits(struct perf_pmu *pmu, const char *name); int perf_pmu__format_type(struct perf_pmu *pmu, const char *name); int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms *head_terms, -- cgit v1.2.3 From d2f3ecb0ca2099d13bf8bf69219214c1425dc453 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:06 -0700 Subject: perf parse-events: Expose/rename config_term_name Expose config_term_name as parse_events__term_type_str so that PMUs not in pmu.c may access it. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-4-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/parse-events.c | 20 +++++++++++--------- tools/perf/util/parse-events.h | 2 ++ 2 files changed, 13 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 6ae611e70fae..228ae469d44a 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -800,7 +800,7 @@ static int check_type_val(struct parse_events_term *term, static bool config_term_shrinked; -static const char *config_term_name(enum parse_events__term_type term_type) +const char *parse_events__term_type_str(enum parse_events__term_type term_type) { /* * Update according to parse-events.l @@ -886,7 +886,7 @@ config_term_avail(enum parse_events__term_type term_type, struct parse_events_er /* term_type is validated so indexing is safe */ if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", - config_term_name(term_type)) >= 0) + parse_events__term_type_str(term_type)) >= 0) parse_events_error__handle(err, -1, err_str, NULL); return false; } @@ -1010,7 +1010,7 @@ do { \ case PARSE_EVENTS__TERM_TYPE_HARDWARE: default: parse_events_error__handle(err, term->err_term, - strdup(config_term_name(term->type_term)), + strdup(parse_events__term_type_str(term->type_term)), parse_events_formats_error_string(NULL)); return -EINVAL; } @@ -1134,8 +1134,9 @@ static int config_term_tracepoint(struct perf_event_attr *attr, default: if (err) { parse_events_error__handle(err, term->err_term, - strdup(config_term_name(term->type_term)), - strdup("valid terms: call-graph,stack-size\n")); + strdup(parse_events__term_type_str(term->type_term)), + strdup("valid terms: call-graph,stack-size\n") + ); } return -EINVAL; } @@ -2582,7 +2583,7 @@ int parse_events_term__num(struct parse_events_term **term, struct parse_events_term temp = { .type_val = PARSE_EVENTS__TERM_TYPE_NUM, .type_term = type_term, - .config = config ? : strdup(config_term_name(type_term)), + .config = config ? : strdup(parse_events__term_type_str(type_term)), .no_value = no_value, .err_term = loc_term ? loc_term->first_column : 0, .err_val = loc_val ? loc_val->first_column : 0, @@ -2616,7 +2617,7 @@ int parse_events_term__term(struct parse_events_term **term, void *loc_term, void *loc_val) { return parse_events_term__str(term, term_lhs, NULL, - strdup(config_term_name(term_rhs)), + strdup(parse_events__term_type_str(term_rhs)), loc_term, loc_val); } @@ -2723,7 +2724,8 @@ int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct if (ret < 0) return ret; } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { - ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term)); + ret = strbuf_addf(sb, "%s=", + parse_events__term_type_str(term->type_term)); if (ret < 0) return ret; } @@ -2743,7 +2745,7 @@ static void config_terms_list(char *buf, size_t buf_sz) buf[0] = '\0'; for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { - const char *name = config_term_name(i); + const char *name = parse_events__term_type_str(i); if (!config_term_avail(i, NULL)) continue; diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 2b52f8d6aa29..ac1feaaeb8d5 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -168,6 +168,8 @@ struct parse_events_state { bool wild_card_pmus; }; +const char *parse_events__term_type_str(enum parse_events__term_type term_type); + bool parse_events__filter_pmu(const struct parse_events_state *parse_state, const struct perf_pmu *pmu); void parse_events__shrink_config_terms(void); -- cgit v1.2.3 From 240505b2d0adcdc8fd018117e88dc27b09734735 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:07 -0700 Subject: perf tool_pmu: Factor tool events into their own PMU Rather than treat tool events as a special kind of event, create a tool only PMU where the events/aliases match the existing duration_time, user_time and system_time events. Remove special parsing and printing support for the tool events, but add function calls for when PMU functions are called on a tool_pmu. Move the tool PMU code in evsel into tool_pmu.c to better encapsulate the tool event behavior in that file. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-5-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-list.c | 13 +- tools/perf/builtin-stat.c | 1 + tools/perf/util/Build | 1 + tools/perf/util/evsel.c | 272 ++------------------------- tools/perf/util/evsel.h | 28 +-- tools/perf/util/metricgroup.c | 1 + tools/perf/util/parse-events.c | 39 ---- tools/perf/util/parse-events.h | 3 - tools/perf/util/parse-events.l | 11 -- tools/perf/util/parse-events.y | 16 -- tools/perf/util/pmu.c | 20 +- tools/perf/util/pmu.h | 2 + tools/perf/util/pmus.c | 9 + tools/perf/util/print-events.c | 36 +--- tools/perf/util/print-events.h | 1 - tools/perf/util/stat-display.c | 6 +- tools/perf/util/stat-shadow.c | 1 + tools/perf/util/tool_pmu.c | 411 +++++++++++++++++++++++++++++++++++++++++ tools/perf/util/tool_pmu.h | 51 +++++ 19 files changed, 530 insertions(+), 392 deletions(-) create mode 100644 tools/perf/util/tool_pmu.c create mode 100644 tools/perf/util/tool_pmu.h (limited to 'tools') diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c index 65b8cba324be..b8378ba18c28 100644 --- a/tools/perf/builtin-list.c +++ b/tools/perf/builtin-list.c @@ -19,6 +19,7 @@ #include "util/string2.h" #include "util/strlist.h" #include "util/strbuf.h" +#include "util/tool_pmu.h" #include #include #include @@ -614,9 +615,18 @@ int cmd_list(int argc, const char **argv) event_symbols_hw, PERF_COUNT_HW_MAX); else if (strcmp(argv[i], "sw") == 0 || strcmp(argv[i], "software") == 0) { + char *old_pmu_glob = default_ps.pmu_glob; + print_symbol_events(&print_cb, ps, PERF_TYPE_SOFTWARE, event_symbols_sw, PERF_COUNT_SW_MAX); - print_tool_events(&print_cb, ps); + default_ps.pmu_glob = strdup("tool"); + if (!default_ps.pmu_glob) { + ret = -1; + goto out; + } + perf_pmus__print_pmu_events(&print_cb, ps); + zfree(&default_ps.pmu_glob); + default_ps.pmu_glob = old_pmu_glob; } else if (strcmp(argv[i], "cache") == 0 || strcmp(argv[i], "hwcache") == 0) print_hwcache_events(&print_cb, ps); @@ -664,7 +674,6 @@ int cmd_list(int argc, const char **argv) event_symbols_hw, PERF_COUNT_HW_MAX); print_symbol_events(&print_cb, ps, PERF_TYPE_SOFTWARE, event_symbols_sw, PERF_COUNT_SW_MAX); - print_tool_events(&print_cb, ps); print_hwcache_events(&print_cb, ps); perf_pmus__print_pmu_events(&print_cb, ps); print_tracepoint_events(&print_cb, ps); diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 3e6b9f216e80..bc12975efad5 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -46,6 +46,7 @@ #include "util/parse-events.h" #include "util/pmus.h" #include "util/pmu.h" +#include "util/tool_pmu.h" #include "util/event.h" #include "util/evlist.h" #include "util/evsel.h" diff --git a/tools/perf/util/Build b/tools/perf/util/Build index dc616292b2dd..fa508e113dd0 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -83,6 +83,7 @@ perf-util-y += pmu.o perf-util-y += pmus.o perf-util-y += pmu-flex.o perf-util-y += pmu-bison.o +perf-util-y += tool_pmu.o perf-util-y += svghelper.o perf-util-$(CONFIG_LIBTRACEEVENT) += trace-event-info.o perf-util-y += trace-event-scripting.o diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index b221459439b8..14a17f768f42 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -10,7 +10,6 @@ #include #include #include -#include #include #include #include @@ -51,6 +50,7 @@ #include "off_cpu.h" #include "pmu.h" #include "pmus.h" +#include "tool_pmu.h" #include "rlimit.h" #include "../perf-sys.h" #include "util/parse-branch-options.h" @@ -71,33 +71,6 @@ struct perf_missing_features perf_missing_features; static clockid_t clockid; -static const char *const perf_tool_event__tool_names[PERF_TOOL_MAX] = { - NULL, - "duration_time", - "user_time", - "system_time", -}; - -const char *perf_tool_event__to_str(enum perf_tool_event ev) -{ - if (ev > PERF_TOOL_NONE && ev < PERF_TOOL_MAX) - return perf_tool_event__tool_names[ev]; - - return NULL; -} - -enum perf_tool_event perf_tool_event__from_str(const char *str) -{ - int i; - - perf_tool_event__for_each_event(i) { - if (!strcmp(str, perf_tool_event__tool_names[i])) - return i; - } - return PERF_TOOL_NONE; -} - - static int evsel__no_extra_init(struct evsel *evsel __maybe_unused) { return 0; @@ -416,7 +389,6 @@ struct evsel *evsel__clone(struct evsel *orig) evsel->core.leader = orig->core.leader; evsel->max_events = orig->max_events; - evsel->tool_event = orig->tool_event; free((char *)evsel->unit); evsel->unit = strdup(orig->unit); if (evsel->unit == NULL) @@ -614,11 +586,6 @@ static int evsel__sw_name(struct evsel *evsel, char *bf, size_t size) return r + evsel__add_modifiers(evsel, bf + r, size - r); } -static int evsel__tool_name(enum perf_tool_event ev, char *bf, size_t size) -{ - return scnprintf(bf, size, "%s", perf_tool_event__to_str(ev)); -} - static int __evsel__bp_name(char *bf, size_t size, u64 addr, u64 type) { int r; @@ -769,10 +736,7 @@ const char *evsel__name(struct evsel *evsel) break; case PERF_TYPE_SOFTWARE: - if (evsel__is_tool(evsel)) - evsel__tool_name(evsel__tool_event(evsel), bf, sizeof(bf)); - else - evsel__sw_name(evsel, bf, sizeof(bf)); + evsel__sw_name(evsel, bf, sizeof(bf)); break; case PERF_TYPE_TRACEPOINT: @@ -783,6 +747,10 @@ const char *evsel__name(struct evsel *evsel) evsel__bp_name(evsel, bf, sizeof(bf)); break; + case PERF_PMU_TYPE_TOOL: + scnprintf(bf, sizeof(bf), "%s", evsel__tool_pmu_event_name(evsel)); + break; + default: scnprintf(bf, sizeof(bf), "unknown attr type: %d", evsel->core.attr.type); @@ -808,7 +776,7 @@ const char *evsel__metric_id(const struct evsel *evsel) return evsel->metric_id; if (evsel__is_tool(evsel)) - return perf_tool_event__to_str(evsel__tool_event(evsel)); + return evsel__tool_pmu_event_name(evsel); return "unknown"; } @@ -1689,167 +1657,6 @@ static int evsel__read_group(struct evsel *leader, int cpu_map_idx, int thread) return evsel__process_group_data(leader, cpu_map_idx, thread, data); } -static bool read_until_char(struct io *io, char e) -{ - int c; - - do { - c = io__get_char(io); - if (c == -1) - return false; - } while (c != e); - return true; -} - -static int read_stat_field(int fd, struct perf_cpu cpu, int field, __u64 *val) -{ - char buf[256]; - struct io io; - int i; - - io__init(&io, fd, buf, sizeof(buf)); - - /* Skip lines to relevant CPU. */ - for (i = -1; i < cpu.cpu; i++) { - if (!read_until_char(&io, '\n')) - return -EINVAL; - } - /* Skip to "cpu". */ - if (io__get_char(&io) != 'c') return -EINVAL; - if (io__get_char(&io) != 'p') return -EINVAL; - if (io__get_char(&io) != 'u') return -EINVAL; - - /* Skip N of cpuN. */ - if (!read_until_char(&io, ' ')) - return -EINVAL; - - i = 1; - while (true) { - if (io__get_dec(&io, val) != ' ') - break; - if (field == i) - return 0; - i++; - } - return -EINVAL; -} - -static int read_pid_stat_field(int fd, int field, __u64 *val) -{ - char buf[256]; - struct io io; - int c, i; - - io__init(&io, fd, buf, sizeof(buf)); - if (io__get_dec(&io, val) != ' ') - return -EINVAL; - if (field == 1) - return 0; - - /* Skip comm. */ - if (io__get_char(&io) != '(' || !read_until_char(&io, ')')) - return -EINVAL; - if (field == 2) - return -EINVAL; /* String can't be returned. */ - - /* Skip state */ - if (io__get_char(&io) != ' ' || io__get_char(&io) == -1) - return -EINVAL; - if (field == 3) - return -EINVAL; /* String can't be returned. */ - - /* Loop over numeric fields*/ - if (io__get_char(&io) != ' ') - return -EINVAL; - - i = 4; - while (true) { - c = io__get_dec(&io, val); - if (c == -1) - return -EINVAL; - if (c == -2) { - /* Assume a -ve was read */ - c = io__get_dec(&io, val); - *val *= -1; - } - if (c != ' ') - return -EINVAL; - if (field == i) - return 0; - i++; - } - return -EINVAL; -} - -static int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread) -{ - __u64 *start_time, cur_time, delta_start; - int fd, err = 0; - struct perf_counts_values *count; - bool adjust = false; - - count = perf_counts(evsel->counts, cpu_map_idx, thread); - - switch (evsel__tool_event(evsel)) { - case PERF_TOOL_DURATION_TIME: - /* - * Pretend duration_time is only on the first CPU and thread, or - * else aggregation will scale duration_time by the number of - * CPUs/threads. - */ - start_time = &evsel->start_time; - if (cpu_map_idx == 0 && thread == 0) - cur_time = rdclock(); - else - cur_time = *start_time; - break; - case PERF_TOOL_USER_TIME: - case PERF_TOOL_SYSTEM_TIME: { - bool system = evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME; - - start_time = xyarray__entry(evsel->start_times, cpu_map_idx, thread); - fd = FD(evsel, cpu_map_idx, thread); - lseek(fd, SEEK_SET, 0); - if (evsel->pid_stat) { - /* The event exists solely on 1 CPU. */ - if (cpu_map_idx == 0) - err = read_pid_stat_field(fd, system ? 15 : 14, &cur_time); - else - cur_time = 0; - } else { - /* The event is for all threads. */ - if (thread == 0) { - struct perf_cpu cpu = perf_cpu_map__cpu(evsel->core.cpus, - cpu_map_idx); - - err = read_stat_field(fd, cpu, system ? 3 : 1, &cur_time); - } else { - cur_time = 0; - } - } - adjust = true; - break; - } - case PERF_TOOL_NONE: - case PERF_TOOL_MAX: - default: - err = -EINVAL; - } - if (err) - return err; - - delta_start = cur_time - *start_time; - if (adjust) { - __u64 ticks_per_sec = sysconf(_SC_CLK_TCK); - - delta_start *= 1000000000 / ticks_per_sec; - } - count->val = delta_start; - count->ena = count->run = delta_start; - count->lost = 0; - return 0; -} - bool __evsel__match(const struct evsel *evsel, u32 type, u64 config) { @@ -2065,6 +1872,7 @@ static struct perf_thread_map *empty_thread_map; static int __evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, struct perf_thread_map *threads) { + int ret = 0; int nthreads = perf_thread_map__nr(threads); if ((perf_missing_features.write_backward && evsel->core.attr.write_backward) || @@ -2095,19 +1903,14 @@ static int __evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, perf_evsel__alloc_fd(&evsel->core, perf_cpu_map__nr(cpus), nthreads) < 0) return -ENOMEM; - if ((evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME || - evsel__tool_event(evsel) == PERF_TOOL_USER_TIME) && - !evsel->start_times) { - evsel->start_times = xyarray__new(perf_cpu_map__nr(cpus), nthreads, sizeof(__u64)); - if (!evsel->start_times) - return -ENOMEM; - } + if (evsel__is_tool(evsel)) + ret = evsel__tool_pmu_prepare_open(evsel, cpus, nthreads); evsel->open_flags = PERF_FLAG_FD_CLOEXEC; if (evsel->cgrp) evsel->open_flags |= PERF_FLAG_PID_CGROUP; - return 0; + return ret; } static void evsel__disable_missing_features(struct evsel *evsel) @@ -2292,13 +2095,6 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int pid = -1, err, old_errno; enum rlimit_action set_rlimit = NO_CHANGE; - if (evsel__tool_event(evsel) == PERF_TOOL_DURATION_TIME) { - if (evsel->core.attr.sample_period) /* no sampling */ - return -EINVAL; - evsel->start_time = rdclock(); - return 0; - } - if (evsel__is_retire_lat(evsel)) return tpebs_start(evsel->evlist); @@ -2323,6 +2119,12 @@ fallback_missing_features: pr_debug3("Opening: %s\n", evsel__name(evsel)); display_attr(&evsel->core.attr); + if (evsel__is_tool(evsel)) { + return evsel__tool_pmu_open(evsel, threads, + start_cpu_map_idx, + end_cpu_map_idx); + } + for (idx = start_cpu_map_idx; idx < end_cpu_map_idx; idx++) { for (thread = 0; thread < nthreads; thread++) { @@ -2334,46 +2136,6 @@ retry_open: if (!evsel->cgrp && !evsel->core.system_wide) pid = perf_thread_map__pid(threads, thread); - if (evsel__tool_event(evsel) == PERF_TOOL_USER_TIME || - evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME) { - bool system = evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME; - __u64 *start_time = NULL; - - if (evsel->core.attr.sample_period) { - /* no sampling */ - err = -EINVAL; - goto out_close; - } - if (pid > -1) { - char buf[64]; - - snprintf(buf, sizeof(buf), "/proc/%d/stat", pid); - fd = open(buf, O_RDONLY); - evsel->pid_stat = true; - } else { - fd = open("/proc/stat", O_RDONLY); - } - FD(evsel, idx, thread) = fd; - if (fd < 0) { - err = -errno; - goto out_close; - } - start_time = xyarray__entry(evsel->start_times, idx, thread); - if (pid > -1) { - err = read_pid_stat_field(fd, system ? 15 : 14, - start_time); - } else { - struct perf_cpu cpu; - - cpu = perf_cpu_map__cpu(evsel->core.cpus, idx); - err = read_stat_field(fd, cpu, system ? 3 : 1, - start_time); - } - if (err) - goto out_close; - continue; - } - group_fd = get_group_fd(evsel, idx, thread); if (group_fd == -2) { diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index bd08d94d3f8a..9fcaf417b277 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -11,6 +11,7 @@ #include #include "symbol_conf.h" #include "pmus.h" +#include "pmu.h" struct bpf_object; struct cgroup; @@ -22,25 +23,9 @@ struct target; struct hashmap; struct bperf_leader_bpf; struct bperf_follower_bpf; -struct perf_pmu; typedef int (evsel__sb_cb_t)(union perf_event *event, void *data); -enum perf_tool_event { - PERF_TOOL_NONE = 0, - PERF_TOOL_DURATION_TIME = 1, - PERF_TOOL_USER_TIME = 2, - PERF_TOOL_SYSTEM_TIME = 3, - - PERF_TOOL_MAX, -}; - -const char *perf_tool_event__to_str(enum perf_tool_event ev); -enum perf_tool_event perf_tool_event__from_str(const char *str); - -#define perf_tool_event__for_each_event(ev) \ - for ((ev) = PERF_TOOL_DURATION_TIME; (ev) < PERF_TOOL_MAX; ev++) - /** struct evsel - event selector * * @evlist - evlist this evsel is in, if it is in one. @@ -82,7 +67,6 @@ struct evsel { const char *unit; struct cgroup *cgrp; const char *metric_id; - enum perf_tool_event tool_event; /* parse modifier helper */ int exclude_GH; int sample_read; @@ -321,21 +305,11 @@ const char *evsel__name(struct evsel *evsel); bool evsel__name_is(struct evsel *evsel, const char *name); const char *evsel__metric_id(const struct evsel *evsel); -static inline bool evsel__is_tool(const struct evsel *evsel) -{ - return evsel->tool_event != PERF_TOOL_NONE; -} - static inline bool evsel__is_retire_lat(const struct evsel *evsel) { return evsel->retire_lat; } -static inline enum perf_tool_event evsel__tool_event(const struct evsel *evsel) -{ - return evsel->tool_event; -} - const char *evsel__group_name(struct evsel *evsel); int evsel__group_desc(struct evsel *evsel, char *buf, size_t size); diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 9c6fa6b4f628..827bab455d5b 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -14,6 +14,7 @@ #include "pmus.h" #include "print-events.h" #include "smt.h" +#include "tool_pmu.h" #include "expr.h" #include "rblist.h" #include diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 228ae469d44a..4507ae68198b 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -301,38 +301,6 @@ static int add_event(struct list_head *list, int *idx, alternate_hw_config) ? 0 : -ENOMEM; } -static int add_event_tool(struct list_head *list, int *idx, - enum perf_tool_event tool_event) -{ - struct evsel *evsel; - struct perf_event_attr attr = { - .type = PERF_TYPE_SOFTWARE, - .config = PERF_COUNT_SW_DUMMY, - }; - struct perf_cpu_map *cpu_list = NULL; - - if (tool_event == PERF_TOOL_DURATION_TIME) { - /* Duration time is gathered globally, pretend it is only on CPU0. */ - cpu_list = perf_cpu_map__new("0"); - } - evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL, - /*metric_id=*/NULL, /*pmu=*/NULL, - /*config_terms=*/NULL, /*auto_merge_stats=*/false, - cpu_list, - /*alternate_hw_config=*/PERF_COUNT_HW_MAX); - perf_cpu_map__put(cpu_list); - if (!evsel) - return -ENOMEM; - evsel->tool_event = tool_event; - if (tool_event == PERF_TOOL_DURATION_TIME - || tool_event == PERF_TOOL_USER_TIME - || tool_event == PERF_TOOL_SYSTEM_TIME) { - free((char *)evsel->unit); - evsel->unit = strdup("ns"); - } - return 0; -} - /** * parse_aliases - search names for entries beginning or equalling str ignoring * case. If mutliple entries in names match str then the longest @@ -1430,13 +1398,6 @@ int parse_events_add_numeric(struct parse_events_state *parse_state, type, /*extended_type=*/0, config, head_config); } -int parse_events_add_tool(struct parse_events_state *parse_state, - struct list_head *list, - int tool_event) -{ - return add_event_tool(list, &parse_state->idx, tool_event); -} - static bool config_term_percore(struct list_head *config_terms) { struct evsel_config_term *term; diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index ac1feaaeb8d5..3f4334ec6231 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -229,9 +229,6 @@ int parse_events_add_numeric(struct parse_events_state *parse_state, u32 type, u64 config, const struct parse_events_terms *head_config, bool wildcard); -int parse_events_add_tool(struct parse_events_state *parse_state, - struct list_head *list, - int tool_event); int parse_events_add_cache(struct list_head *list, int *idx, const char *name, struct parse_events_state *parse_state, struct parse_events_terms *parsed_terms); diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index 5a0bcd7f166a..14e5bd856a18 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -121,14 +121,6 @@ static int sym(yyscan_t scanner, int type, int config) return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW; } -static int tool(yyscan_t scanner, enum perf_tool_event event) -{ - YYSTYPE *yylval = parse_events_get_lval(scanner); - - yylval->num = event; - return PE_VALUE_SYM_TOOL; -} - static int term(yyscan_t scanner, enum parse_events__term_type type) { YYSTYPE *yylval = parse_events_get_lval(scanner); @@ -404,9 +396,6 @@ cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COU alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } -duration_time { return tool(yyscanner, PERF_TOOL_DURATION_TIME); } -user_time { return tool(yyscanner, PERF_TOOL_USER_TIME); } -system_time { return tool(yyscanner, PERF_TOOL_SYSTEM_TIME); } bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); } cgroup-switches { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CGROUP_SWITCHES); } diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index dcf47fabdfdd..f888cbb076d6 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -56,7 +56,6 @@ static void free_list_evsel(struct list_head* list_evsel) %token PE_START_EVENTS PE_START_TERMS %token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_TERM -%token PE_VALUE_SYM_TOOL %token PE_EVENT_NAME %token PE_RAW PE_NAME %token PE_MODIFIER_EVENT PE_MODIFIER_BP PE_BP_COLON PE_BP_SLASH @@ -68,7 +67,6 @@ static void free_list_evsel(struct list_head* list_evsel) %type PE_VALUE %type PE_VALUE_SYM_HW %type PE_VALUE_SYM_SW -%type PE_VALUE_SYM_TOOL %type PE_MODIFIER_EVENT %type PE_TERM %type value_sym @@ -350,20 +348,6 @@ value_sym sep_slash_slash_dc PE_ABORT(err); $$ = list; } -| -PE_VALUE_SYM_TOOL sep_slash_slash_dc -{ - struct list_head *list; - int err; - - list = alloc_list(); - if (!list) - YYNOMEM; - err = parse_events_add_tool(_parse_state, list, $1); - if (err) - YYNOMEM; - $$ = list; -} event_legacy_cache: PE_LEGACY_CACHE opt_event_config diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index a1c7e879cb2f..762942853351 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -19,6 +19,7 @@ #include "evsel.h" #include "pmu.h" #include "pmus.h" +#include "tool_pmu.h" #include #include #include "parse-events.h" @@ -1548,6 +1549,9 @@ int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, { bool zero = !!pmu->perf_event_attr_init_default; + if (perf_pmu__is_tool(pmu)) + return tool_pmu__config_terms(attr, head_terms, err); + /* Fake PMU doesn't have proper terms so nothing to configure in attr. */ if (perf_pmu__is_fake(pmu)) return 0; @@ -1660,8 +1664,8 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms *head_ info->scale = 0.0; info->snapshot = false; - /* Fake PMU doesn't rewrite terms. */ - if (perf_pmu__is_fake(pmu)) + /* Tool/fake PMU doesn't rewrite terms. */ + if (perf_pmu__is_tool(pmu) || perf_pmu__is_fake(pmu)) goto out; list_for_each_entry_safe(term, h, &head_terms->terms, list) { @@ -1831,6 +1835,8 @@ bool perf_pmu__have_event(struct perf_pmu *pmu, const char *name) { if (!name) return false; + if (perf_pmu__is_tool(pmu)) + return perf_tool_event__from_str(name) != PERF_TOOL_NONE; if (perf_pmu__find_alias(pmu, name, /*load=*/ true) != NULL) return true; if (pmu->cpu_aliases_added || !pmu->events_table) @@ -1842,6 +1848,9 @@ size_t perf_pmu__num_events(struct perf_pmu *pmu) { size_t nr; + if (perf_pmu__is_tool(pmu)) + return tool_pmu__num_events(); + pmu_aliases_parse(pmu); nr = pmu->sysfs_aliases + pmu->sys_json_aliases; @@ -1902,6 +1911,9 @@ int perf_pmu__for_each_event(struct perf_pmu *pmu, bool skip_duplicate_pmus, int ret = 0; struct strbuf sb; + if (perf_pmu__is_tool(pmu)) + return tool_pmu__for_each_event_cb(pmu, state, cb); + strbuf_init(&sb, /*hint=*/ 0); pmu_aliases_parse(pmu); pmu_add_cpu_aliases(pmu); @@ -1990,6 +2002,7 @@ bool perf_pmu__is_software(const struct perf_pmu *pmu) case PERF_TYPE_HW_CACHE: return false; case PERF_TYPE_RAW: return false; case PERF_TYPE_BREAKPOINT: return true; + case PERF_PMU_TYPE_TOOL: return true; default: break; } for (size_t i = 0; i < ARRAY_SIZE(known_sw_pmus); i++) { @@ -2317,6 +2330,9 @@ const char *perf_pmu__name_from_config(struct perf_pmu *pmu, u64 config) if (!pmu) return NULL; + if (perf_pmu__is_tool(pmu)) + return perf_tool_event__to_str(config); + pmu_aliases_parse(pmu); pmu_add_cpu_aliases(pmu); list_for_each_entry(event, &pmu->aliases, list) { diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index c70317d3fb04..36fced2bf065 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -37,6 +37,7 @@ struct perf_pmu_caps { }; enum { + PERF_PMU_TYPE_TOOL = 0xFFFFFFFE, PERF_PMU_TYPE_FAKE = 0xFFFFFFFF, }; @@ -282,6 +283,7 @@ struct perf_pmu *perf_pmu__lookup(struct list_head *pmus, int dirfd, const char struct perf_pmu *perf_pmu__create_placeholder_core_pmu(struct list_head *core_pmus); void perf_pmu__delete(struct perf_pmu *pmu); struct perf_pmu *perf_pmus__find_core_pmu(void); + const char *perf_pmu__name_from_config(struct perf_pmu *pmu, u64 config); bool perf_pmu__is_fake(const struct perf_pmu *pmu); diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c index 52109af5f2f1..6e657c44de58 100644 --- a/tools/perf/util/pmus.c +++ b/tools/perf/util/pmus.c @@ -15,6 +15,7 @@ #include "evsel.h" #include "pmus.h" #include "pmu.h" +#include "tool_pmu.h" #include "print-events.h" #include "strbuf.h" @@ -200,6 +201,7 @@ static void pmu_read_sysfs(bool core_only) int fd; DIR *dir; struct dirent *dent; + struct perf_pmu *tool_pmu; if (read_sysfs_all_pmus || (core_only && read_sysfs_core_pmus)) return; @@ -229,6 +231,10 @@ static void pmu_read_sysfs(bool core_only) pr_err("Failure to set up any core PMUs\n"); } list_sort(NULL, &core_pmus, pmus_cmp); + if (!core_only) { + tool_pmu = perf_pmus__tool_pmu(); + list_add_tail(&tool_pmu->list, &other_pmus); + } list_sort(NULL, &other_pmus, pmus_cmp); if (!list_empty(&core_pmus)) { read_sysfs_core_pmus = true; @@ -584,6 +590,9 @@ void perf_pmus__print_raw_pmu_events(const struct print_callbacks *print_cb, voi int len = pmu_name_len_no_suffix(pmu->name); const char *desc = "(see 'man perf-list' or 'man perf-record' on how to encode it)"; + if (perf_pmu__is_tool(pmu)) + continue; + if (!pmu->is_core) desc = NULL; diff --git a/tools/perf/util/print-events.c b/tools/perf/util/print-events.c index 81e0135cddf0..a786cbfb0ff5 100644 --- a/tools/perf/util/print-events.c +++ b/tools/perf/util/print-events.c @@ -29,6 +29,7 @@ #include "tracepoint.h" #include "pfm.h" #include "thread_map.h" +#include "tool_pmu.h" #include "util.h" #define MAX_NAME_LEN 100 @@ -43,21 +44,6 @@ static const char * const event_type_descriptors[] = { "Hardware breakpoint", }; -static const struct event_symbol event_symbols_tool[PERF_TOOL_MAX] = { - [PERF_TOOL_DURATION_TIME] = { - .symbol = "duration_time", - .alias = "", - }, - [PERF_TOOL_USER_TIME] = { - .symbol = "user_time", - .alias = "", - }, - [PERF_TOOL_SYSTEM_TIME] = { - .symbol = "system_time", - .alias = "", - }, -}; - /* * Print the events from /tracing/events */ @@ -341,24 +327,6 @@ int print_hwcache_events(const struct print_callbacks *print_cb, void *print_sta return 0; } -void print_tool_events(const struct print_callbacks *print_cb, void *print_state) -{ - // Start at 1 because the first enum entry means no tool event. - for (int i = 1; i < PERF_TOOL_MAX; ++i) { - print_cb->print_event(print_state, - "tool", - /*pmu_name=*/NULL, - event_symbols_tool[i].symbol, - event_symbols_tool[i].alias, - /*scale_unit=*/NULL, - /*deprecated=*/false, - "Tool event", - /*desc=*/NULL, - /*long_desc=*/NULL, - /*encoding_desc=*/NULL); - } -} - void print_symbol_events(const struct print_callbacks *print_cb, void *print_state, unsigned int type, const struct event_symbol *syms, unsigned int max) @@ -422,8 +390,6 @@ void print_events(const struct print_callbacks *print_cb, void *print_state) print_symbol_events(print_cb, print_state, PERF_TYPE_SOFTWARE, event_symbols_sw, PERF_COUNT_SW_MAX); - print_tool_events(print_cb, print_state); - print_hwcache_events(print_cb, print_state); perf_pmus__print_pmu_events(print_cb, print_state); diff --git a/tools/perf/util/print-events.h b/tools/perf/util/print-events.h index bf4290bef0cd..445efa1636c1 100644 --- a/tools/perf/util/print-events.h +++ b/tools/perf/util/print-events.h @@ -36,7 +36,6 @@ void print_sdt_events(const struct print_callbacks *print_cb, void *print_state) void print_symbol_events(const struct print_callbacks *print_cb, void *print_state, unsigned int type, const struct event_symbol *syms, unsigned int max); -void print_tool_events(const struct print_callbacks *print_cb, void *print_state); void print_tracepoint_events(const struct print_callbacks *print_cb, void *print_state); bool is_event_supported(u8 type, u64 config); diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index 5402998881c4..ca8527067869 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -22,6 +22,7 @@ #include "iostat.h" #include "pmu.h" #include "pmus.h" +#include "tool_pmu.h" #define CNTR_NOT_SUPPORTED "" #define CNTR_NOT_COUNTED "" @@ -982,7 +983,10 @@ static bool should_skip_zero_counter(struct perf_stat_config *config, if (config->aggr_mode == AGGR_THREAD && config->system_wide) return true; - /* Tool events have the software PMU but are only gathered on 1. */ + /* + * Many tool events are only gathered on the first index, skip other + * zero values. + */ if (evsel__is_tool(counter)) return true; diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 3ce756b8ede5..50f347217d84 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -15,6 +15,7 @@ #include #include "iostat.h" #include "util/hashmap.h" +#include "tool_pmu.h" struct stats walltime_nsecs_stats; struct rusage_stats ru_stats; diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c new file mode 100644 index 000000000000..f41fed39d70d --- /dev/null +++ b/tools/perf/util/tool_pmu.c @@ -0,0 +1,411 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include "cgroup.h" +#include "counts.h" +#include "evsel.h" +#include "pmu.h" +#include "print-events.h" +#include "time-utils.h" +#include "tool_pmu.h" +#include +#include +#include +#include +#include + +static const char *const tool_pmu__event_names[PERF_TOOL_MAX] = { + NULL, + "duration_time", + "user_time", + "system_time", +}; + + +const char *perf_tool_event__to_str(enum perf_tool_event ev) +{ + if (ev > PERF_TOOL_NONE && ev < PERF_TOOL_MAX) + return tool_pmu__event_names[ev]; + + return NULL; +} + +enum perf_tool_event perf_tool_event__from_str(const char *str) +{ + int i; + + perf_tool_event__for_each_event(i) { + if (!strcasecmp(str, tool_pmu__event_names[i])) + return i; + } + return PERF_TOOL_NONE; +} + +static int tool_pmu__config_term(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_error *err) +{ + if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER) { + enum perf_tool_event ev = perf_tool_event__from_str(term->config); + + if (ev == PERF_TOOL_NONE) + goto err_out; + + attr->config = ev; + return 0; + } +err_out: + if (err) { + char *err_str; + + parse_events_error__handle(err, term->err_val, + asprintf(&err_str, + "unexpected tool event term (%s) %s", + parse_events__term_type_str(term->type_term), + term->config) < 0 + ? strdup("unexpected tool event term") + : err_str, + NULL); + } + return -EINVAL; +} + +int tool_pmu__config_terms(struct perf_event_attr *attr, + struct parse_events_terms *terms, + struct parse_events_error *err) +{ + struct parse_events_term *term; + + list_for_each_entry(term, &terms->terms, list) { + if (tool_pmu__config_term(attr, term, err)) + return -EINVAL; + } + + return 0; + +} + +int tool_pmu__for_each_event_cb(struct perf_pmu *pmu, void *state, pmu_event_callback cb) +{ + struct pmu_event_info info = { + .pmu = pmu, + .event_type_desc = "Tool event", + }; + int i; + + perf_tool_event__for_each_event(i) { + int ret; + + info.name = perf_tool_event__to_str(i); + info.alias = NULL; + info.scale_unit = NULL; + info.desc = NULL; + info.long_desc = NULL; + info.encoding_desc = NULL; + info.topic = NULL; + info.pmu_name = pmu->name; + info.deprecated = false; + ret = cb(state, &info); + if (ret) + return ret; + } + return 0; +} + +bool perf_pmu__is_tool(const struct perf_pmu *pmu) +{ + return pmu && pmu->type == PERF_PMU_TYPE_TOOL; +} + +bool evsel__is_tool(const struct evsel *evsel) +{ + return perf_pmu__is_tool(evsel->pmu); +} + +enum perf_tool_event evsel__tool_event(const struct evsel *evsel) +{ + if (!evsel__is_tool(evsel)) + return PERF_TOOL_NONE; + + return (enum perf_tool_event)evsel->core.attr.config; +} + +const char *evsel__tool_pmu_event_name(const struct evsel *evsel) +{ + return perf_tool_event__to_str(evsel->core.attr.config); +} + +static bool read_until_char(struct io *io, char e) +{ + int c; + + do { + c = io__get_char(io); + if (c == -1) + return false; + } while (c != e); + return true; +} + +static int read_stat_field(int fd, struct perf_cpu cpu, int field, __u64 *val) +{ + char buf[256]; + struct io io; + int i; + + io__init(&io, fd, buf, sizeof(buf)); + + /* Skip lines to relevant CPU. */ + for (i = -1; i < cpu.cpu; i++) { + if (!read_until_char(&io, '\n')) + return -EINVAL; + } + /* Skip to "cpu". */ + if (io__get_char(&io) != 'c') return -EINVAL; + if (io__get_char(&io) != 'p') return -EINVAL; + if (io__get_char(&io) != 'u') return -EINVAL; + + /* Skip N of cpuN. */ + if (!read_until_char(&io, ' ')) + return -EINVAL; + + i = 1; + while (true) { + if (io__get_dec(&io, val) != ' ') + break; + if (field == i) + return 0; + i++; + } + return -EINVAL; +} + +static int read_pid_stat_field(int fd, int field, __u64 *val) +{ + char buf[256]; + struct io io; + int c, i; + + io__init(&io, fd, buf, sizeof(buf)); + if (io__get_dec(&io, val) != ' ') + return -EINVAL; + if (field == 1) + return 0; + + /* Skip comm. */ + if (io__get_char(&io) != '(' || !read_until_char(&io, ')')) + return -EINVAL; + if (field == 2) + return -EINVAL; /* String can't be returned. */ + + /* Skip state */ + if (io__get_char(&io) != ' ' || io__get_char(&io) == -1) + return -EINVAL; + if (field == 3) + return -EINVAL; /* String can't be returned. */ + + /* Loop over numeric fields*/ + if (io__get_char(&io) != ' ') + return -EINVAL; + + i = 4; + while (true) { + c = io__get_dec(&io, val); + if (c == -1) + return -EINVAL; + if (c == -2) { + /* Assume a -ve was read */ + c = io__get_dec(&io, val); + *val *= -1; + } + if (c != ' ') + return -EINVAL; + if (field == i) + return 0; + i++; + } + return -EINVAL; +} + +int evsel__tool_pmu_prepare_open(struct evsel *evsel, + struct perf_cpu_map *cpus, + int nthreads) +{ + if ((evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME || + evsel__tool_event(evsel) == PERF_TOOL_USER_TIME) && + !evsel->start_times) { + evsel->start_times = xyarray__new(perf_cpu_map__nr(cpus), + nthreads, + sizeof(__u64)); + if (!evsel->start_times) + return -ENOMEM; + } + return 0; +} + +#define FD(e, x, y) (*(int *)xyarray__entry(e->core.fd, x, y)) + +int evsel__tool_pmu_open(struct evsel *evsel, + struct perf_thread_map *threads, + int start_cpu_map_idx, int end_cpu_map_idx) +{ + enum perf_tool_event ev = evsel__tool_event(evsel); + int pid = -1, idx = 0, thread = 0, nthreads, err = 0, old_errno; + + if (ev == PERF_TOOL_DURATION_TIME) { + if (evsel->core.attr.sample_period) /* no sampling */ + return -EINVAL; + evsel->start_time = rdclock(); + return 0; + } + + if (evsel->cgrp) + pid = evsel->cgrp->fd; + + nthreads = perf_thread_map__nr(threads); + for (idx = start_cpu_map_idx; idx < end_cpu_map_idx; idx++) { + for (thread = 0; thread < nthreads; thread++) { + if (thread >= nthreads) + break; + + if (!evsel->cgrp && !evsel->core.system_wide) + pid = perf_thread_map__pid(threads, thread); + + if (ev == PERF_TOOL_USER_TIME || ev == PERF_TOOL_SYSTEM_TIME) { + bool system = ev == PERF_TOOL_SYSTEM_TIME; + __u64 *start_time = NULL; + int fd; + + if (evsel->core.attr.sample_period) { + /* no sampling */ + err = -EINVAL; + goto out_close; + } + if (pid > -1) { + char buf[64]; + + snprintf(buf, sizeof(buf), "/proc/%d/stat", pid); + fd = open(buf, O_RDONLY); + evsel->pid_stat = true; + } else { + fd = open("/proc/stat", O_RDONLY); + } + FD(evsel, idx, thread) = fd; + if (fd < 0) { + err = -errno; + goto out_close; + } + start_time = xyarray__entry(evsel->start_times, idx, thread); + if (pid > -1) { + err = read_pid_stat_field(fd, system ? 15 : 14, + start_time); + } else { + struct perf_cpu cpu; + + cpu = perf_cpu_map__cpu(evsel->core.cpus, idx); + err = read_stat_field(fd, cpu, system ? 3 : 1, + start_time); + } + if (err) + goto out_close; + } + + } + } + return 0; +out_close: + if (err) + threads->err_thread = thread; + + old_errno = errno; + do { + while (--thread >= 0) { + if (FD(evsel, idx, thread) >= 0) + close(FD(evsel, idx, thread)); + FD(evsel, idx, thread) = -1; + } + thread = nthreads; + } while (--idx >= 0); + errno = old_errno; + return err; +} + +int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread) +{ + __u64 *start_time, cur_time, delta_start; + int fd, err = 0; + struct perf_counts_values *count; + bool adjust = false; + + count = perf_counts(evsel->counts, cpu_map_idx, thread); + + switch (evsel__tool_event(evsel)) { + case PERF_TOOL_DURATION_TIME: + /* + * Pretend duration_time is only on the first CPU and thread, or + * else aggregation will scale duration_time by the number of + * CPUs/threads. + */ + start_time = &evsel->start_time; + if (cpu_map_idx == 0 && thread == 0) + cur_time = rdclock(); + else + cur_time = *start_time; + break; + case PERF_TOOL_USER_TIME: + case PERF_TOOL_SYSTEM_TIME: { + bool system = evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME; + + start_time = xyarray__entry(evsel->start_times, cpu_map_idx, thread); + fd = FD(evsel, cpu_map_idx, thread); + lseek(fd, SEEK_SET, 0); + if (evsel->pid_stat) { + /* The event exists solely on 1 CPU. */ + if (cpu_map_idx == 0) + err = read_pid_stat_field(fd, system ? 15 : 14, &cur_time); + else + cur_time = 0; + } else { + /* The event is for all threads. */ + if (thread == 0) { + struct perf_cpu cpu = perf_cpu_map__cpu(evsel->core.cpus, + cpu_map_idx); + + err = read_stat_field(fd, cpu, system ? 3 : 1, &cur_time); + } else { + cur_time = 0; + } + } + adjust = true; + break; + } + case PERF_TOOL_NONE: + case PERF_TOOL_MAX: + default: + err = -EINVAL; + } + if (err) + return err; + + delta_start = cur_time - *start_time; + if (adjust) { + __u64 ticks_per_sec = sysconf(_SC_CLK_TCK); + + delta_start *= 1000000000 / ticks_per_sec; + } + count->val = delta_start; + count->ena = count->run = delta_start; + count->lost = 0; + return 0; +} + +struct perf_pmu *perf_pmus__tool_pmu(void) +{ + static struct perf_pmu tool = { + .name = "tool", + .type = PERF_PMU_TYPE_TOOL, + .aliases = LIST_HEAD_INIT(tool.aliases), + .caps = LIST_HEAD_INIT(tool.caps), + .format = LIST_HEAD_INIT(tool.format), + }; + + return &tool; +} diff --git a/tools/perf/util/tool_pmu.h b/tools/perf/util/tool_pmu.h new file mode 100644 index 000000000000..05a4052c8b9d --- /dev/null +++ b/tools/perf/util/tool_pmu.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __TOOL_PMU_H +#define __TOOL_PMU_H + +#include "pmu.h" + +struct evsel; +struct perf_thread_map; +struct print_callbacks; + +enum perf_tool_event { + PERF_TOOL_NONE = 0, + PERF_TOOL_DURATION_TIME = 1, + PERF_TOOL_USER_TIME = 2, + PERF_TOOL_SYSTEM_TIME = 3, + + PERF_TOOL_MAX, +}; + +#define perf_tool_event__for_each_event(ev) \ + for ((ev) = PERF_TOOL_DURATION_TIME; (ev) < PERF_TOOL_MAX; ev++) + +static inline size_t tool_pmu__num_events(void) +{ + return PERF_TOOL_MAX - 1; +} + +const char *perf_tool_event__to_str(enum perf_tool_event ev); +enum perf_tool_event perf_tool_event__from_str(const char *str); +int tool_pmu__config_terms(struct perf_event_attr *attr, + struct parse_events_terms *terms, + struct parse_events_error *err); +int tool_pmu__for_each_event_cb(struct perf_pmu *pmu, void *state, pmu_event_callback cb); + +bool perf_pmu__is_tool(const struct perf_pmu *pmu); + + +bool evsel__is_tool(const struct evsel *evsel); +enum perf_tool_event evsel__tool_event(const struct evsel *evsel); +const char *evsel__tool_pmu_event_name(const struct evsel *evsel); +int evsel__tool_pmu_prepare_open(struct evsel *evsel, + struct perf_cpu_map *cpus, + int nthreads); +int evsel__tool_pmu_open(struct evsel *evsel, + struct perf_thread_map *threads, + int start_cpu_map_idx, int end_cpu_map_idx); +int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread); + +struct perf_pmu *perf_pmus__tool_pmu(void); + +#endif /* __TOOL_PMU_H */ -- cgit v1.2.3 From 0709a82c10bb98d0426dd289a6b8c143f61a8786 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:08 -0700 Subject: perf tool_pmu: Rename enum perf_tool_event to tool_pmu_event To better reflect the events listed are from the tool PMU. Rename the enum values from PERF_TOOL_* to TOOL_PMU__EVENT_*. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-6-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 6 +++--- tools/perf/util/evsel.c | 4 ++-- tools/perf/util/metricgroup.c | 12 ++++++------ tools/perf/util/pmu.c | 2 +- tools/perf/util/stat-shadow.c | 10 +++++----- tools/perf/util/tool_pmu.c | 44 +++++++++++++++++++++---------------------- tools/perf/util/tool_pmu.h | 22 +++++++++++----------- 7 files changed, 50 insertions(+), 50 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index bc12975efad5..b5e18853982c 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -295,14 +295,14 @@ static int read_single_counter(struct evsel *counter, int cpu_map_idx, int threa * terminates. Use the wait4 values in that case. */ if (err && cpu_map_idx == 0 && - (evsel__tool_event(counter) == PERF_TOOL_USER_TIME || - evsel__tool_event(counter) == PERF_TOOL_SYSTEM_TIME)) { + (evsel__tool_event(counter) == TOOL_PMU__EVENT_USER_TIME || + evsel__tool_event(counter) == TOOL_PMU__EVENT_SYSTEM_TIME)) { u64 val, *start_time; struct perf_counts_values *count = perf_counts(counter->counts, cpu_map_idx, thread); start_time = xyarray__entry(counter->start_times, cpu_map_idx, thread); - if (evsel__tool_event(counter) == PERF_TOOL_USER_TIME) + if (evsel__tool_event(counter) == TOOL_PMU__EVENT_USER_TIME) val = ru_stats.ru_utime_usec_stat.mean; else val = ru_stats.ru_stime_usec_stat.mean; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 14a17f768f42..320310e333e6 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1476,8 +1476,8 @@ void evsel__exit(struct evsel *evsel) evsel->per_pkg_mask = NULL; zfree(&evsel->metric_events); perf_evsel__object.fini(evsel); - if (evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME || - evsel__tool_event(evsel) == PERF_TOOL_USER_TIME) + if (evsel__tool_event(evsel) == TOOL_PMU__EVENT_SYSTEM_TIME || + evsel__tool_event(evsel) == TOOL_PMU__EVENT_USER_TIME) xyarray__delete(evsel->start_times); } diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 827bab455d5b..1250bf5050b0 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -674,20 +674,20 @@ static int metricgroup__build_event_string(struct strbuf *events, struct hashmap_entry *cur; size_t bkt; bool no_group = true, has_tool_events = false; - bool tool_events[PERF_TOOL_MAX] = {false}; + bool tool_events[TOOL_PMU__EVENT_MAX] = {false}; int ret = 0; #define RETURN_IF_NON_ZERO(x) do { if (x) return x; } while (0) hashmap__for_each_entry(ctx->ids, cur, bkt) { const char *sep, *rsep, *id = cur->pkey; - enum perf_tool_event ev; + enum tool_pmu_event ev; pr_debug("found event %s\n", id); /* Always move tool events outside of the group. */ ev = perf_tool_event__from_str(id); - if (ev != PERF_TOOL_NONE) { + if (ev != TOOL_PMU__EVENT_NONE) { has_tool_events = true; tool_events[ev] = true; continue; @@ -1375,7 +1375,7 @@ static void metricgroup__free_metrics(struct list_head *metric_list) * to true if tool event is found. */ static void find_tool_events(const struct list_head *metric_list, - bool tool_events[PERF_TOOL_MAX]) + bool tool_events[TOOL_PMU__EVENT_MAX]) { struct metric *m; @@ -1447,7 +1447,7 @@ err_out: */ static int parse_ids(bool metric_no_merge, bool fake_pmu, struct expr_parse_ctx *ids, const char *modifier, - bool group_events, const bool tool_events[PERF_TOOL_MAX], + bool group_events, const bool tool_events[TOOL_PMU__EVENT_MAX], struct evlist **out_evlist) { struct parse_events_error parse_error; @@ -1536,7 +1536,7 @@ static int parse_groups(struct evlist *perf_evlist, struct evlist *combined_evlist = NULL; LIST_HEAD(metric_list); struct metric *m; - bool tool_events[PERF_TOOL_MAX] = {false}; + bool tool_events[TOOL_PMU__EVENT_MAX] = {false}; bool is_default = !strcmp(str, "Default"); int ret; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 762942853351..77e848ac5841 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1836,7 +1836,7 @@ bool perf_pmu__have_event(struct perf_pmu *pmu, const char *name) if (!name) return false; if (perf_pmu__is_tool(pmu)) - return perf_tool_event__from_str(name) != PERF_TOOL_NONE; + return perf_tool_event__from_str(name) != TOOL_PMU__EVENT_NONE; if (perf_pmu__find_alias(pmu, name, /*load=*/ true) != NULL) return true; if (pmu->cpu_aliases_added || !pmu->events_table) diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 50f347217d84..b54afb56e3d6 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -382,22 +382,22 @@ static int prepare_metric(const struct metric_expr *mexp, double scale; switch (evsel__tool_event(metric_events[i])) { - case PERF_TOOL_DURATION_TIME: + case TOOL_PMU__EVENT_DURATION_TIME: stats = &walltime_nsecs_stats; scale = 1e-9; break; - case PERF_TOOL_USER_TIME: + case TOOL_PMU__EVENT_USER_TIME: stats = &ru_stats.ru_utime_usec_stat; scale = 1e-6; break; - case PERF_TOOL_SYSTEM_TIME: + case TOOL_PMU__EVENT_SYSTEM_TIME: stats = &ru_stats.ru_stime_usec_stat; scale = 1e-6; break; - case PERF_TOOL_NONE: + case TOOL_PMU__EVENT_NONE: pr_err("Invalid tool event 'none'"); abort(); - case PERF_TOOL_MAX: + case TOOL_PMU__EVENT_MAX: pr_err("Invalid tool event 'max'"); abort(); default: diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c index f41fed39d70d..ae0ca023f5ed 100644 --- a/tools/perf/util/tool_pmu.c +++ b/tools/perf/util/tool_pmu.c @@ -12,7 +12,7 @@ #include #include -static const char *const tool_pmu__event_names[PERF_TOOL_MAX] = { +static const char *const tool_pmu__event_names[TOOL_PMU__EVENT_MAX] = { NULL, "duration_time", "user_time", @@ -20,15 +20,15 @@ static const char *const tool_pmu__event_names[PERF_TOOL_MAX] = { }; -const char *perf_tool_event__to_str(enum perf_tool_event ev) +const char *perf_tool_event__to_str(enum tool_pmu_event ev) { - if (ev > PERF_TOOL_NONE && ev < PERF_TOOL_MAX) + if (ev > TOOL_PMU__EVENT_NONE && ev < TOOL_PMU__EVENT_MAX) return tool_pmu__event_names[ev]; return NULL; } -enum perf_tool_event perf_tool_event__from_str(const char *str) +enum tool_pmu_event perf_tool_event__from_str(const char *str) { int i; @@ -36,7 +36,7 @@ enum perf_tool_event perf_tool_event__from_str(const char *str) if (!strcasecmp(str, tool_pmu__event_names[i])) return i; } - return PERF_TOOL_NONE; + return TOOL_PMU__EVENT_NONE; } static int tool_pmu__config_term(struct perf_event_attr *attr, @@ -44,9 +44,9 @@ static int tool_pmu__config_term(struct perf_event_attr *attr, struct parse_events_error *err) { if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER) { - enum perf_tool_event ev = perf_tool_event__from_str(term->config); + enum tool_pmu_event ev = perf_tool_event__from_str(term->config); - if (ev == PERF_TOOL_NONE) + if (ev == TOOL_PMU__EVENT_NONE) goto err_out; attr->config = ev; @@ -120,12 +120,12 @@ bool evsel__is_tool(const struct evsel *evsel) return perf_pmu__is_tool(evsel->pmu); } -enum perf_tool_event evsel__tool_event(const struct evsel *evsel) +enum tool_pmu_event evsel__tool_event(const struct evsel *evsel) { if (!evsel__is_tool(evsel)) - return PERF_TOOL_NONE; + return TOOL_PMU__EVENT_NONE; - return (enum perf_tool_event)evsel->core.attr.config; + return (enum tool_pmu_event)evsel->core.attr.config; } const char *evsel__tool_pmu_event_name(const struct evsel *evsel) @@ -229,8 +229,8 @@ int evsel__tool_pmu_prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, int nthreads) { - if ((evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME || - evsel__tool_event(evsel) == PERF_TOOL_USER_TIME) && + if ((evsel__tool_event(evsel) == TOOL_PMU__EVENT_SYSTEM_TIME || + evsel__tool_event(evsel) == TOOL_PMU__EVENT_USER_TIME) && !evsel->start_times) { evsel->start_times = xyarray__new(perf_cpu_map__nr(cpus), nthreads, @@ -247,10 +247,10 @@ int evsel__tool_pmu_open(struct evsel *evsel, struct perf_thread_map *threads, int start_cpu_map_idx, int end_cpu_map_idx) { - enum perf_tool_event ev = evsel__tool_event(evsel); + enum tool_pmu_event ev = evsel__tool_event(evsel); int pid = -1, idx = 0, thread = 0, nthreads, err = 0, old_errno; - if (ev == PERF_TOOL_DURATION_TIME) { + if (ev == TOOL_PMU__EVENT_DURATION_TIME) { if (evsel->core.attr.sample_period) /* no sampling */ return -EINVAL; evsel->start_time = rdclock(); @@ -269,8 +269,8 @@ int evsel__tool_pmu_open(struct evsel *evsel, if (!evsel->cgrp && !evsel->core.system_wide) pid = perf_thread_map__pid(threads, thread); - if (ev == PERF_TOOL_USER_TIME || ev == PERF_TOOL_SYSTEM_TIME) { - bool system = ev == PERF_TOOL_SYSTEM_TIME; + if (ev == TOOL_PMU__EVENT_USER_TIME || ev == TOOL_PMU__EVENT_SYSTEM_TIME) { + bool system = ev == TOOL_PMU__EVENT_SYSTEM_TIME; __u64 *start_time = NULL; int fd; @@ -338,7 +338,7 @@ int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread) count = perf_counts(evsel->counts, cpu_map_idx, thread); switch (evsel__tool_event(evsel)) { - case PERF_TOOL_DURATION_TIME: + case TOOL_PMU__EVENT_DURATION_TIME: /* * Pretend duration_time is only on the first CPU and thread, or * else aggregation will scale duration_time by the number of @@ -350,9 +350,9 @@ int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread) else cur_time = *start_time; break; - case PERF_TOOL_USER_TIME: - case PERF_TOOL_SYSTEM_TIME: { - bool system = evsel__tool_event(evsel) == PERF_TOOL_SYSTEM_TIME; + case TOOL_PMU__EVENT_USER_TIME: + case TOOL_PMU__EVENT_SYSTEM_TIME: { + bool system = evsel__tool_event(evsel) == TOOL_PMU__EVENT_SYSTEM_TIME; start_time = xyarray__entry(evsel->start_times, cpu_map_idx, thread); fd = FD(evsel, cpu_map_idx, thread); @@ -377,8 +377,8 @@ int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread) adjust = true; break; } - case PERF_TOOL_NONE: - case PERF_TOOL_MAX: + case TOOL_PMU__EVENT_NONE: + case TOOL_PMU__EVENT_MAX: default: err = -EINVAL; } diff --git a/tools/perf/util/tool_pmu.h b/tools/perf/util/tool_pmu.h index 05a4052c8b9d..b27a26133927 100644 --- a/tools/perf/util/tool_pmu.h +++ b/tools/perf/util/tool_pmu.h @@ -8,25 +8,25 @@ struct evsel; struct perf_thread_map; struct print_callbacks; -enum perf_tool_event { - PERF_TOOL_NONE = 0, - PERF_TOOL_DURATION_TIME = 1, - PERF_TOOL_USER_TIME = 2, - PERF_TOOL_SYSTEM_TIME = 3, +enum tool_pmu_event { + TOOL_PMU__EVENT_NONE = 0, + TOOL_PMU__EVENT_DURATION_TIME = 1, + TOOL_PMU__EVENT_USER_TIME = 2, + TOOL_PMU__EVENT_SYSTEM_TIME = 3, - PERF_TOOL_MAX, + TOOL_PMU__EVENT_MAX, }; #define perf_tool_event__for_each_event(ev) \ - for ((ev) = PERF_TOOL_DURATION_TIME; (ev) < PERF_TOOL_MAX; ev++) + for ((ev) = TOOL_PMU__EVENT_DURATION_TIME; (ev) < TOOL_PMU__EVENT_MAX; ev++) static inline size_t tool_pmu__num_events(void) { - return PERF_TOOL_MAX - 1; + return TOOL_PMU__EVENT_MAX - 1; } -const char *perf_tool_event__to_str(enum perf_tool_event ev); -enum perf_tool_event perf_tool_event__from_str(const char *str); +const char *perf_tool_event__to_str(enum tool_pmu_event ev); +enum tool_pmu_event perf_tool_event__from_str(const char *str); int tool_pmu__config_terms(struct perf_event_attr *attr, struct parse_events_terms *terms, struct parse_events_error *err); @@ -36,7 +36,7 @@ bool perf_pmu__is_tool(const struct perf_pmu *pmu); bool evsel__is_tool(const struct evsel *evsel); -enum perf_tool_event evsel__tool_event(const struct evsel *evsel); +enum tool_pmu_event evsel__tool_event(const struct evsel *evsel); const char *evsel__tool_pmu_event_name(const struct evsel *evsel); int evsel__tool_pmu_prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, -- cgit v1.2.3 From b8f1a1b0680c055bbe9f99e82e2e5b474621a1d6 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:09 -0700 Subject: perf tool_pmu: Rename perf_tool_event__* to tool_pmu__* Now the events are associated with the tool PMU, rename the functions to reflect this. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-7-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/evsel.c | 2 +- tools/perf/util/metricgroup.c | 22 +++++++++++----------- tools/perf/util/pmu.c | 4 ++-- tools/perf/util/tool_pmu.c | 16 ++++++++-------- tools/perf/util/tool_pmu.h | 8 ++++---- 5 files changed, 26 insertions(+), 26 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 320310e333e6..ed0d4d20e357 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1678,7 +1678,7 @@ bool __evsel__match(const struct evsel *evsel, u32 type, u64 config) int evsel__read_counter(struct evsel *evsel, int cpu_map_idx, int thread) { if (evsel__is_tool(evsel)) - return evsel__read_tool(evsel, cpu_map_idx, thread); + return evsel__tool_pmu_read(evsel, cpu_map_idx, thread); if (evsel__is_retire_lat(evsel)) return evsel__read_retire_lat(evsel, cpu_map_idx, thread); diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 1250bf5050b0..46920ebadfd1 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -686,7 +686,7 @@ static int metricgroup__build_event_string(struct strbuf *events, pr_debug("found event %s\n", id); /* Always move tool events outside of the group. */ - ev = perf_tool_event__from_str(id); + ev = tool_pmu__str_to_event(id); if (ev != TOOL_PMU__EVENT_NONE) { has_tool_events = true; tool_events[ev] = true; @@ -755,14 +755,14 @@ static int metricgroup__build_event_string(struct strbuf *events, if (has_tool_events) { int i; - perf_tool_event__for_each_event(i) { + tool_pmu__for_each_event(i) { if (tool_events[i]) { if (!no_group) { ret = strbuf_addch(events, ','); RETURN_IF_NON_ZERO(ret); } no_group = false; - ret = strbuf_addstr(events, perf_tool_event__to_str(i)); + ret = strbuf_addstr(events, tool_pmu__event_to_str(i)); RETURN_IF_NON_ZERO(ret); } } @@ -1148,14 +1148,14 @@ static int metric_list_cmp(void *priv __maybe_unused, const struct list_head *l, int i, left_count, right_count; left_count = hashmap__size(left->pctx->ids); - perf_tool_event__for_each_event(i) { - if (!expr__get_id(left->pctx, perf_tool_event__to_str(i), &data)) + tool_pmu__for_each_event(i) { + if (!expr__get_id(left->pctx, tool_pmu__event_to_str(i), &data)) left_count--; } right_count = hashmap__size(right->pctx->ids); - perf_tool_event__for_each_event(i) { - if (!expr__get_id(right->pctx, perf_tool_event__to_str(i), &data)) + tool_pmu__for_each_event(i) { + if (!expr__get_id(right->pctx, tool_pmu__event_to_str(i), &data)) right_count--; } @@ -1382,11 +1382,11 @@ static void find_tool_events(const struct list_head *metric_list, list_for_each_entry(m, metric_list, nd) { int i; - perf_tool_event__for_each_event(i) { + tool_pmu__for_each_event(i) { struct expr_id_data *data; if (!tool_events[i] && - !expr__get_id(m->pctx, perf_tool_event__to_str(i), &data)) + !expr__get_id(m->pctx, tool_pmu__event_to_str(i), &data)) tool_events[i] = true; } } @@ -1472,9 +1472,9 @@ static int parse_ids(bool metric_no_merge, bool fake_pmu, * event1 if #smt_on else 0 * Add a tool event to avoid a parse error on an empty string. */ - perf_tool_event__for_each_event(i) { + tool_pmu__for_each_event(i) { if (tool_events[i]) { - char *tmp = strdup(perf_tool_event__to_str(i)); + char *tmp = strdup(tool_pmu__event_to_str(i)); if (!tmp) return -ENOMEM; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 77e848ac5841..d3c7a1c4254c 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1836,7 +1836,7 @@ bool perf_pmu__have_event(struct perf_pmu *pmu, const char *name) if (!name) return false; if (perf_pmu__is_tool(pmu)) - return perf_tool_event__from_str(name) != TOOL_PMU__EVENT_NONE; + return tool_pmu__str_to_event(name) != TOOL_PMU__EVENT_NONE; if (perf_pmu__find_alias(pmu, name, /*load=*/ true) != NULL) return true; if (pmu->cpu_aliases_added || !pmu->events_table) @@ -2331,7 +2331,7 @@ const char *perf_pmu__name_from_config(struct perf_pmu *pmu, u64 config) return NULL; if (perf_pmu__is_tool(pmu)) - return perf_tool_event__to_str(config); + return tool_pmu__event_to_str(config); pmu_aliases_parse(pmu); pmu_add_cpu_aliases(pmu); diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c index ae0ca023f5ed..2a1524dc2e31 100644 --- a/tools/perf/util/tool_pmu.c +++ b/tools/perf/util/tool_pmu.c @@ -20,7 +20,7 @@ static const char *const tool_pmu__event_names[TOOL_PMU__EVENT_MAX] = { }; -const char *perf_tool_event__to_str(enum tool_pmu_event ev) +const char *tool_pmu__event_to_str(enum tool_pmu_event ev) { if (ev > TOOL_PMU__EVENT_NONE && ev < TOOL_PMU__EVENT_MAX) return tool_pmu__event_names[ev]; @@ -28,11 +28,11 @@ const char *perf_tool_event__to_str(enum tool_pmu_event ev) return NULL; } -enum tool_pmu_event perf_tool_event__from_str(const char *str) +enum tool_pmu_event tool_pmu__str_to_event(const char *str) { int i; - perf_tool_event__for_each_event(i) { + tool_pmu__for_each_event(i) { if (!strcasecmp(str, tool_pmu__event_names[i])) return i; } @@ -44,7 +44,7 @@ static int tool_pmu__config_term(struct perf_event_attr *attr, struct parse_events_error *err) { if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER) { - enum tool_pmu_event ev = perf_tool_event__from_str(term->config); + enum tool_pmu_event ev = tool_pmu__str_to_event(term->config); if (ev == TOOL_PMU__EVENT_NONE) goto err_out; @@ -91,10 +91,10 @@ int tool_pmu__for_each_event_cb(struct perf_pmu *pmu, void *state, pmu_event_cal }; int i; - perf_tool_event__for_each_event(i) { + tool_pmu__for_each_event(i) { int ret; - info.name = perf_tool_event__to_str(i); + info.name = tool_pmu__event_to_str(i); info.alias = NULL; info.scale_unit = NULL; info.desc = NULL; @@ -130,7 +130,7 @@ enum tool_pmu_event evsel__tool_event(const struct evsel *evsel) const char *evsel__tool_pmu_event_name(const struct evsel *evsel) { - return perf_tool_event__to_str(evsel->core.attr.config); + return tool_pmu__event_to_str(evsel->core.attr.config); } static bool read_until_char(struct io *io, char e) @@ -328,7 +328,7 @@ out_close: return err; } -int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread) +int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread) { __u64 *start_time, cur_time, delta_start; int fd, err = 0; diff --git a/tools/perf/util/tool_pmu.h b/tools/perf/util/tool_pmu.h index b27a26133927..b156645206c4 100644 --- a/tools/perf/util/tool_pmu.h +++ b/tools/perf/util/tool_pmu.h @@ -17,7 +17,7 @@ enum tool_pmu_event { TOOL_PMU__EVENT_MAX, }; -#define perf_tool_event__for_each_event(ev) \ +#define tool_pmu__for_each_event(ev) \ for ((ev) = TOOL_PMU__EVENT_DURATION_TIME; (ev) < TOOL_PMU__EVENT_MAX; ev++) static inline size_t tool_pmu__num_events(void) @@ -25,8 +25,8 @@ static inline size_t tool_pmu__num_events(void) return TOOL_PMU__EVENT_MAX - 1; } -const char *perf_tool_event__to_str(enum tool_pmu_event ev); -enum tool_pmu_event perf_tool_event__from_str(const char *str); +const char *tool_pmu__event_to_str(enum tool_pmu_event ev); +enum tool_pmu_event tool_pmu__str_to_event(const char *str); int tool_pmu__config_terms(struct perf_event_attr *attr, struct parse_events_terms *terms, struct parse_events_error *err); @@ -44,7 +44,7 @@ int evsel__tool_pmu_prepare_open(struct evsel *evsel, int evsel__tool_pmu_open(struct evsel *evsel, struct perf_thread_map *threads, int start_cpu_map_idx, int end_cpu_map_idx); -int evsel__read_tool(struct evsel *evsel, int cpu_map_idx, int thread); +int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread); struct perf_pmu *perf_pmus__tool_pmu(void); -- cgit v1.2.3 From 069057239a676a82cce9330a81994129179dc817 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:10 -0700 Subject: perf tool_pmu: Move expr literals to tool_pmu Add the expr literals like "#smt_on" as tool events, this allows stat events to give the values. On my laptop with hyperthreading enabled: ``` $ perf stat -e "has_pmem,num_cores,num_cpus,num_cpus_online,num_dies,num_packages,smt_on,system_tsc_freq" true Performance counter stats for 'true': 0 has_pmem 8 num_cores 16 num_cpus 16 num_cpus_online 1 num_dies 1 num_packages 1 smt_on 2,496,000,000 system_tsc_freq 0.001113637 seconds time elapsed 0.001218000 seconds user 0.000000000 seconds sys ``` And with hyperthreading disabled: ``` $ perf stat -e "has_pmem,num_cores,num_cpus,num_cpus_online,num_dies,num_packages,smt_on,system_tsc_freq" true Performance counter stats for 'true': 0 has_pmem 8 num_cores 16 num_cpus 8 num_cpus_online 1 num_dies 1 num_packages 0 smt_on 2,496,000,000 system_tsc_freq 0.000802115 seconds time elapsed 0.000000000 seconds user 0.000806000 seconds sys ``` As zero matters for these values, in stat-display should_skip_zero_counter only skip the zero value if it is not the first aggregation index. The tool event implementations are used in expr but not evaluated as events for simplicity. Also core_wide isn't made a tool event as it requires command line parameters. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-8-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/arch/arm64/util/pmu.c | 5 +- tools/perf/arch/x86/util/tsc.c | 18 ++--- tools/perf/util/expr.c | 93 ++++--------------------- tools/perf/util/pmu.c | 5 -- tools/perf/util/pmu.h | 1 - tools/perf/util/stat-display.c | 8 ++- tools/perf/util/stat-shadow.c | 11 ++- tools/perf/util/tool_pmu.c | 146 ++++++++++++++++++++++++++++++++++++++- tools/perf/util/tool_pmu.h | 19 +++-- tools/perf/util/tsc.h | 2 +- 10 files changed, 201 insertions(+), 107 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/arm64/util/pmu.c b/tools/perf/arch/arm64/util/pmu.c index 2a4eab2d160e..a0964b191fcb 100644 --- a/tools/perf/arch/arm64/util/pmu.c +++ b/tools/perf/arch/arm64/util/pmu.c @@ -5,6 +5,7 @@ #include "../../../util/header.h" #include "../../../util/pmu.h" #include "../../../util/pmus.h" +#include "../../../util/tool_pmu.h" #include #include @@ -24,7 +25,7 @@ const struct pmu_metrics_table *pmu_metrics_table__find(void) return NULL; } -double perf_pmu__cpu_slots_per_cycle(void) +u64 tool_pmu__cpu_slots_per_cycle(void) { char path[PATH_MAX]; unsigned long long slots = 0; @@ -41,5 +42,5 @@ double perf_pmu__cpu_slots_per_cycle(void) filename__read_ull(path, &slots); } - return slots ? (double)slots : NAN; + return slots; } diff --git a/tools/perf/arch/x86/util/tsc.c b/tools/perf/arch/x86/util/tsc.c index e2d6cfe21057..3a439e4b12d2 100644 --- a/tools/perf/arch/x86/util/tsc.c +++ b/tools/perf/arch/x86/util/tsc.c @@ -24,9 +24,9 @@ u64 rdtsc(void) * ... * will return 3000000000. */ -static double cpuinfo_tsc_freq(void) +static u64 cpuinfo_tsc_freq(void) { - double result = 0; + u64 result = 0; FILE *cpuinfo; char *line = NULL; size_t len = 0; @@ -34,20 +34,22 @@ static double cpuinfo_tsc_freq(void) cpuinfo = fopen("/proc/cpuinfo", "r"); if (!cpuinfo) { pr_err("Failed to read /proc/cpuinfo for TSC frequency\n"); - return NAN; + return 0; } while (getline(&line, &len, cpuinfo) > 0) { if (!strncmp(line, "model name", 10)) { char *pos = strstr(line + 11, " @ "); + double float_result; - if (pos && sscanf(pos, " @ %lfGHz", &result) == 1) { - result *= 1000000000; + if (pos && sscanf(pos, " @ %lfGHz", &float_result) == 1) { + float_result *= 1000000000; + result = (u64)float_result; goto out; } } } out: - if (fpclassify(result) == FP_ZERO) + if (result == 0) pr_err("Failed to find TSC frequency in /proc/cpuinfo\n"); free(line); @@ -55,7 +57,7 @@ out: return result; } -double arch_get_tsc_freq(void) +u64 arch_get_tsc_freq(void) { unsigned int a, b, c, d, lvl; static bool cached; @@ -86,6 +88,6 @@ double arch_get_tsc_freq(void) return tsc; } - tsc = (double)c * (double)b / (double)a; + tsc = (u64)c * (u64)b / (u64)a; return tsc; } diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c index b2536a59c44e..5e3732bc2fa5 100644 --- a/tools/perf/util/expr.c +++ b/tools/perf/util/expr.c @@ -5,25 +5,22 @@ #include #include #include "metricgroup.h" -#include "cpumap.h" -#include "cputopo.h" #include "debug.h" #include "evlist.h" #include "expr.h" +#include "pmu.h" +#include "smt.h" +#include "tool_pmu.h" #include #include #include "util/hashmap.h" #include "util/header.h" #include "util/pmu.h" -#include "smt.h" -#include "tsc.h" -#include #include #include #include #include #include -#include "pmu.h" struct expr_id_data { union { @@ -393,90 +390,26 @@ double expr_id_data__source_count(const struct expr_id_data *data) return data->val.source_count; } -#if !defined(__i386__) && !defined(__x86_64__) -double arch_get_tsc_freq(void) -{ - return 0.0; -} -#endif - -static double has_pmem(void) -{ - static bool has_pmem, cached; - const char *sysfs = sysfs__mountpoint(); - char path[PATH_MAX]; - - if (!cached) { - snprintf(path, sizeof(path), "%s/firmware/acpi/tables/NFIT", sysfs); - has_pmem = access(path, F_OK) == 0; - cached = true; - } - return has_pmem ? 1.0 : 0.0; -} - double expr__get_literal(const char *literal, const struct expr_scanner_ctx *ctx) { - const struct cpu_topology *topology; double result = NAN; + enum tool_pmu_event ev = tool_pmu__str_to_event(literal + 1); - if (!strcmp("#num_cpus", literal)) { - result = cpu__max_present_cpu().cpu; - goto out; - } - if (!strcmp("#num_cpus_online", literal)) { - struct perf_cpu_map *online = cpu_map__online(); - - if (online) - result = perf_cpu_map__nr(online); - goto out; - } + if (ev != TOOL_PMU__EVENT_NONE) { + u64 count; - if (!strcasecmp("#system_tsc_freq", literal)) { - result = arch_get_tsc_freq(); - goto out; - } + if (tool_pmu__read_event(ev, &count)) + result = count; + else + pr_err("Failure to read '%s'", literal); - /* - * Assume that topology strings are consistent, such as CPUs "0-1" - * wouldn't be listed as "0,1", and so after deduplication the number of - * these strings gives an indication of the number of packages, dies, - * etc. - */ - if (!strcasecmp("#smt_on", literal)) { - result = smt_on() ? 1.0 : 0.0; - goto out; - } - if (!strcmp("#core_wide", literal)) { + } else if (!strcmp("#core_wide", literal)) { result = core_wide(ctx->system_wide, ctx->user_requested_cpu_list) ? 1.0 : 0.0; - goto out; - } - if (!strcmp("#num_packages", literal)) { - topology = online_topology(); - result = topology->package_cpus_lists; - goto out; - } - if (!strcmp("#num_dies", literal)) { - topology = online_topology(); - result = topology->die_cpus_lists; - goto out; - } - if (!strcmp("#num_cores", literal)) { - topology = online_topology(); - result = topology->core_cpus_lists; - goto out; - } - if (!strcmp("#slots", literal)) { - result = perf_pmu__cpu_slots_per_cycle(); - goto out; - } - if (!strcmp("#has_pmem", literal)) { - result = has_pmem(); - goto out; + } else { + pr_err("Unrecognized literal '%s'", literal); } - pr_err("Unrecognized literal '%s'", literal); -out: pr_debug2("literal: %s = %f\n", literal, result); return result; } diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index d3c7a1c4254c..9228650a62d2 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -2254,11 +2254,6 @@ bool perf_pmu__match(const struct perf_pmu *pmu, const char *tok) (need_fnmatch && !fnmatch(tok, name, 0)); } -double __weak perf_pmu__cpu_slots_per_cycle(void) -{ - return NAN; -} - int perf_pmu__event_source_devices_scnprintf(char *pathname, size_t size) { const char *sysfs = sysfs__mountpoint(); diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 36fced2bf065..e400db9e9eb1 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -271,7 +271,6 @@ void perf_pmu__warn_invalid_formats(struct perf_pmu *pmu); bool perf_pmu__match(const struct perf_pmu *pmu, const char *tok); -double perf_pmu__cpu_slots_per_cycle(void); int perf_pmu__event_source_devices_scnprintf(char *pathname, size_t size); int perf_pmu__pathname_scnprintf(char *buf, size_t size, const char *pmu_name, const char *filename); diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index ca8527067869..ef0ca8cd802d 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -987,8 +987,12 @@ static bool should_skip_zero_counter(struct perf_stat_config *config, * Many tool events are only gathered on the first index, skip other * zero values. */ - if (evsel__is_tool(counter)) - return true; + if (evsel__is_tool(counter)) { + struct aggr_cpu_id own_id = + config->aggr_get_id(config, (struct perf_cpu){ .cpu = 0 }); + + return !aggr_cpu_id__equal(id, &own_id); + } /* * Skip value 0 when it's an uncore event and the given aggr id diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index b54afb56e3d6..6227de848083 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -400,8 +400,17 @@ static int prepare_metric(const struct metric_expr *mexp, case TOOL_PMU__EVENT_MAX: pr_err("Invalid tool event 'max'"); abort(); + case TOOL_PMU__EVENT_HAS_PMEM: + case TOOL_PMU__EVENT_NUM_CORES: + case TOOL_PMU__EVENT_NUM_CPUS: + case TOOL_PMU__EVENT_NUM_CPUS_ONLINE: + case TOOL_PMU__EVENT_NUM_DIES: + case TOOL_PMU__EVENT_NUM_PACKAGES: + case TOOL_PMU__EVENT_SLOTS: + case TOOL_PMU__EVENT_SMT_ON: + case TOOL_PMU__EVENT_SYSTEM_TSC_FREQ: default: - pr_err("Unknown tool event '%s'", evsel__name(metric_events[i])); + pr_err("Unexpected tool event '%s'", evsel__name(metric_events[i])); abort(); } val = avg_stats(stats) * scale; diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c index 2a1524dc2e31..cfdc09dece1e 100644 --- a/tools/perf/util/tool_pmu.c +++ b/tools/perf/util/tool_pmu.c @@ -1,11 +1,16 @@ // SPDX-License-Identifier: GPL-2.0-only #include "cgroup.h" #include "counts.h" +#include "cputopo.h" #include "evsel.h" #include "pmu.h" #include "print-events.h" +#include "smt.h" #include "time-utils.h" #include "tool_pmu.h" +#include "tsc.h" +#include +#include #include #include #include @@ -17,6 +22,15 @@ static const char *const tool_pmu__event_names[TOOL_PMU__EVENT_MAX] = { "duration_time", "user_time", "system_time", + "has_pmem", + "num_cores", + "num_cpus", + "num_cpus_online", + "num_dies", + "num_packages", + "slots", + "smt_on", + "system_tsc_freq", }; @@ -33,8 +47,14 @@ enum tool_pmu_event tool_pmu__str_to_event(const char *str) int i; tool_pmu__for_each_event(i) { - if (!strcasecmp(str, tool_pmu__event_names[i])) + if (!strcasecmp(str, tool_pmu__event_names[i])) { +#if !defined(__aarch64__) + /* The slots event should only appear on arm64. */ + if (i == TOOL_PMU__EVENT_SLOTS) + return TOOL_PMU__EVENT_NONE; +#endif return i; + } } return TOOL_PMU__EVENT_NONE; } @@ -250,6 +270,9 @@ int evsel__tool_pmu_open(struct evsel *evsel, enum tool_pmu_event ev = evsel__tool_event(evsel); int pid = -1, idx = 0, thread = 0, nthreads, err = 0, old_errno; + if (ev == TOOL_PMU__EVENT_NUM_CPUS) + return 0; + if (ev == TOOL_PMU__EVENT_DURATION_TIME) { if (evsel->core.attr.sample_period) /* no sampling */ return -EINVAL; @@ -328,16 +351,133 @@ out_close: return err; } +#if !defined(__i386__) && !defined(__x86_64__) +u64 arch_get_tsc_freq(void) +{ + return 0; +} +#endif + +#if !defined(__aarch64__) +u64 tool_pmu__cpu_slots_per_cycle(void) +{ + return 0; +} +#endif + +static bool has_pmem(void) +{ + static bool has_pmem, cached; + const char *sysfs = sysfs__mountpoint(); + char path[PATH_MAX]; + + if (!cached) { + snprintf(path, sizeof(path), "%s/firmware/acpi/tables/NFIT", sysfs); + has_pmem = access(path, F_OK) == 0; + cached = true; + } + return has_pmem; +} + +bool tool_pmu__read_event(enum tool_pmu_event ev, u64 *result) +{ + const struct cpu_topology *topology; + + switch (ev) { + case TOOL_PMU__EVENT_HAS_PMEM: + *result = has_pmem() ? 1 : 0; + return true; + + case TOOL_PMU__EVENT_NUM_CORES: + topology = online_topology(); + *result = topology->core_cpus_lists; + return true; + + case TOOL_PMU__EVENT_NUM_CPUS: + *result = cpu__max_present_cpu().cpu; + return true; + + case TOOL_PMU__EVENT_NUM_CPUS_ONLINE: { + struct perf_cpu_map *online = cpu_map__online(); + + if (online) { + *result = perf_cpu_map__nr(online); + return true; + } + return false; + } + case TOOL_PMU__EVENT_NUM_DIES: + topology = online_topology(); + *result = topology->die_cpus_lists; + return true; + + case TOOL_PMU__EVENT_NUM_PACKAGES: + topology = online_topology(); + *result = topology->package_cpus_lists; + return true; + + case TOOL_PMU__EVENT_SLOTS: + *result = tool_pmu__cpu_slots_per_cycle(); + return *result ? true : false; + + case TOOL_PMU__EVENT_SMT_ON: + *result = smt_on() ? 1 : 0; + return true; + + case TOOL_PMU__EVENT_SYSTEM_TSC_FREQ: + *result = arch_get_tsc_freq(); + return true; + + case TOOL_PMU__EVENT_NONE: + case TOOL_PMU__EVENT_DURATION_TIME: + case TOOL_PMU__EVENT_USER_TIME: + case TOOL_PMU__EVENT_SYSTEM_TIME: + case TOOL_PMU__EVENT_MAX: + default: + return false; + } +} + int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread) { __u64 *start_time, cur_time, delta_start; + unsigned long val; int fd, err = 0; - struct perf_counts_values *count; + struct perf_counts_values *count, *old_count = NULL; bool adjust = false; + enum tool_pmu_event ev = evsel__tool_event(evsel); count = perf_counts(evsel->counts, cpu_map_idx, thread); - switch (evsel__tool_event(evsel)) { + switch (ev) { + case TOOL_PMU__EVENT_HAS_PMEM: + case TOOL_PMU__EVENT_NUM_CORES: + case TOOL_PMU__EVENT_NUM_CPUS: + case TOOL_PMU__EVENT_NUM_CPUS_ONLINE: + case TOOL_PMU__EVENT_NUM_DIES: + case TOOL_PMU__EVENT_NUM_PACKAGES: + case TOOL_PMU__EVENT_SLOTS: + case TOOL_PMU__EVENT_SMT_ON: + case TOOL_PMU__EVENT_SYSTEM_TSC_FREQ: + if (evsel->prev_raw_counts) + old_count = perf_counts(evsel->prev_raw_counts, cpu_map_idx, thread); + val = 0; + if (cpu_map_idx == 0 && thread == 0) { + if (!tool_pmu__read_event(ev, &val)) { + count->lost++; + val = 0; + } + } + if (old_count) { + count->val = old_count->val + val; + count->run = old_count->run + 1; + count->ena = old_count->ena + 1; + } else { + count->val = val; + count->run++; + count->ena++; + } + return 0; case TOOL_PMU__EVENT_DURATION_TIME: /* * Pretend duration_time is only on the first CPU and thread, or diff --git a/tools/perf/util/tool_pmu.h b/tools/perf/util/tool_pmu.h index b156645206c4..ecdf316525bb 100644 --- a/tools/perf/util/tool_pmu.h +++ b/tools/perf/util/tool_pmu.h @@ -10,9 +10,18 @@ struct print_callbacks; enum tool_pmu_event { TOOL_PMU__EVENT_NONE = 0, - TOOL_PMU__EVENT_DURATION_TIME = 1, - TOOL_PMU__EVENT_USER_TIME = 2, - TOOL_PMU__EVENT_SYSTEM_TIME = 3, + TOOL_PMU__EVENT_DURATION_TIME, + TOOL_PMU__EVENT_USER_TIME, + TOOL_PMU__EVENT_SYSTEM_TIME, + TOOL_PMU__EVENT_HAS_PMEM, + TOOL_PMU__EVENT_NUM_CORES, + TOOL_PMU__EVENT_NUM_CPUS, + TOOL_PMU__EVENT_NUM_CPUS_ONLINE, + TOOL_PMU__EVENT_NUM_DIES, + TOOL_PMU__EVENT_NUM_PACKAGES, + TOOL_PMU__EVENT_SLOTS, + TOOL_PMU__EVENT_SMT_ON, + TOOL_PMU__EVENT_SYSTEM_TSC_FREQ, TOOL_PMU__EVENT_MAX, }; @@ -31,9 +40,11 @@ int tool_pmu__config_terms(struct perf_event_attr *attr, struct parse_events_terms *terms, struct parse_events_error *err); int tool_pmu__for_each_event_cb(struct perf_pmu *pmu, void *state, pmu_event_callback cb); +bool tool_pmu__read_event(enum tool_pmu_event ev, u64 *result); -bool perf_pmu__is_tool(const struct perf_pmu *pmu); +u64 tool_pmu__cpu_slots_per_cycle(void); +bool perf_pmu__is_tool(const struct perf_pmu *pmu); bool evsel__is_tool(const struct evsel *evsel); enum tool_pmu_event evsel__tool_event(const struct evsel *evsel); diff --git a/tools/perf/util/tsc.h b/tools/perf/util/tsc.h index 88fd1c4c1cb8..57ce8449647f 100644 --- a/tools/perf/util/tsc.h +++ b/tools/perf/util/tsc.h @@ -25,7 +25,7 @@ int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc); u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc); u64 rdtsc(void); -double arch_get_tsc_freq(void); +u64 arch_get_tsc_freq(void); size_t perf_event__fprintf_time_conv(union perf_event *event, FILE *fp); -- cgit v1.2.3 From c9b121b7fa5d99e87184d69d0852bf7f6a61179d Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:11 -0700 Subject: perf jevents: Add tool event json under a common architecture Introduce the notion of a common architecture/model that can be used to find event tables for common PMUs like the tool PMU. By having tool events be json standard PMU attribute configuration, descriptions, etc. can be used and these routines are already optimized for things like binary searching. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-9-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/pmu-events/arch/common/common/tool.json | 74 ++++++++ tools/perf/pmu-events/empty-pmu-events.c | 208 +++++++++++++-------- tools/perf/pmu-events/jevents.py | 16 +- 3 files changed, 215 insertions(+), 83 deletions(-) create mode 100644 tools/perf/pmu-events/arch/common/common/tool.json (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/common/common/tool.json b/tools/perf/pmu-events/arch/common/common/tool.json new file mode 100644 index 000000000000..12f2ef1813a6 --- /dev/null +++ b/tools/perf/pmu-events/arch/common/common/tool.json @@ -0,0 +1,74 @@ +[ + { + "Unit": "tool", + "EventName": "duration_time", + "BriefDescription": "Wall clock interval time in nanoseconds", + "ConfigCode": "1" + }, + { + "Unit": "tool", + "EventName": "user_time", + "BriefDescription": "User (non-kernel) time in nanoseconds", + "ConfigCode": "2" + }, + { + "Unit": "tool", + "EventName": "system_time", + "BriefDescription": "System/kernel time in nanoseconds", + "ConfigCode": "3" + }, + { + "Unit": "tool", + "EventName": "has_pmem", + "BriefDescription": "1 if persistent memory installed otherwise 0", + "ConfigCode": "4" + }, + { + "Unit": "tool", + "EventName": "num_cores", + "BriefDescription": "Number of cores. A core consists of 1 or more thread, with each thread being associated with a logical Linux CPU", + "ConfigCode": "5" + }, + { + "Unit": "tool", + "EventName": "num_cpus", + "BriefDescription": "Number of logical Linux CPUs. There may be multiple such CPUs on a core", + "ConfigCode": "6" + }, + { + "Unit": "tool", + "EventName": "num_cpus_online", + "BriefDescription": "Number of online logical Linux CPUs. There may be multiple such CPUs on a core", + "ConfigCode": "7" + }, + { + "Unit": "tool", + "EventName": "num_dies", + "BriefDescription": "Number of dies. Each die has 1 or more cores", + "ConfigCode": "8" + }, + { + "Unit": "tool", + "EventName": "num_packages", + "BriefDescription": "Number of packages. Each package has 1 or more die", + "ConfigCode": "9" + }, + { + "Unit": "tool", + "EventName": "slots", + "BriefDescription": "Number of functional units that in parallel can execute parts of an instruction", + "ConfigCode": "10" + }, + { + "Unit": "tool", + "EventName": "smt_on", + "BriefDescription": "1 if simultaneous multithreading (aka hyperthreading) is enable otherwise 0", + "ConfigCode": "11" + }, + { + "Unit": "tool", + "EventName": "system_tsc_freq", + "BriefDescription": "The amount a Time Stamp Counter (TSC) increases per second", + "ConfigCode": "12" + } +] diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c index 873e9fb2041f..2b7516946ded 100644 --- a/tools/perf/pmu-events/empty-pmu-events.c +++ b/tools/perf/pmu-events/empty-pmu-events.c @@ -19,72 +19,109 @@ struct pmu_table_entry { }; static const char *const big_c_string = -/* offset=0 */ "default_core\000" -/* offset=13 */ "bp_l1_btb_correct\000branch\000L1 BTB Correction\000event=0x8a\000\00000\000\000" -/* offset=72 */ "bp_l2_btb_correct\000branch\000L2 BTB Correction\000event=0x8b\000\00000\000\000" -/* offset=131 */ "l3_cache_rd\000cache\000L3 cache access, read\000event=0x40\000\00000\000Attributable Level 3 cache access, read\000" -/* offset=226 */ "segment_reg_loads.any\000other\000Number of segment register loads\000event=6,period=200000,umask=0x80\000\00000\000\000" -/* offset=325 */ "dispatch_blocked.any\000other\000Memory cluster signals to block micro-op dispatch for any reason\000event=9,period=200000,umask=0x20\000\00000\000\000" -/* offset=455 */ "eist_trans\000other\000Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions\000event=0x3a,period=200000\000\00000\000\000" -/* offset=570 */ "hisi_sccl,ddrc\000" -/* offset=585 */ "uncore_hisi_ddrc.flux_wcmd\000uncore\000DDRC write commands\000event=2\000\00000\000DDRC write commands\000" -/* offset=671 */ "uncore_cbox\000" -/* offset=683 */ "unc_cbo_xsnp_response.miss_eviction\000uncore\000A cross-core snoop resulted from L3 Eviction which misses in some processor core\000event=0x22,umask=0x81\000\00000\000A cross-core snoop resulted from L3 Eviction which misses in some processor core\000" -/* offset=914 */ "event-hyphen\000uncore\000UNC_CBO_HYPHEN\000event=0xe0\000\00000\000UNC_CBO_HYPHEN\000" -/* offset=979 */ "event-two-hyph\000uncore\000UNC_CBO_TWO_HYPH\000event=0xc0\000\00000\000UNC_CBO_TWO_HYPH\000" -/* offset=1050 */ "hisi_sccl,l3c\000" -/* offset=1064 */ "uncore_hisi_l3c.rd_hit_cpipe\000uncore\000Total read hits\000event=7\000\00000\000Total read hits\000" -/* offset=1144 */ "uncore_imc_free_running\000" -/* offset=1168 */ "uncore_imc_free_running.cache_miss\000uncore\000Total cache misses\000event=0x12\000\00000\000Total cache misses\000" -/* offset=1263 */ "uncore_imc\000" -/* offset=1274 */ "uncore_imc.cache_hits\000uncore\000Total cache hits\000event=0x34\000\00000\000Total cache hits\000" -/* offset=1352 */ "uncore_sys_ddr_pmu\000" -/* offset=1371 */ "sys_ddr_pmu.write_cycles\000uncore\000ddr write-cycles event\000event=0x2b\000v8\00000\000\000" -/* offset=1444 */ "uncore_sys_ccn_pmu\000" -/* offset=1463 */ "sys_ccn_pmu.read_cycles\000uncore\000ccn read-cycles event\000config=0x2c\0000x01\00000\000\000" -/* offset=1537 */ "uncore_sys_cmn_pmu\000" -/* offset=1556 */ "sys_cmn_pmu.hnf_cache_miss\000uncore\000Counts total cache misses in first lookup result (high priority)\000eventid=1,type=5\000(434|436|43c|43a).*\00000\000\000" -/* offset=1696 */ "CPI\000\0001 / IPC\000\000\000\000\000\000\000\00000" -/* offset=1718 */ "IPC\000group1\000inst_retired.any / cpu_clk_unhalted.thread\000\000\000\000\000\000\000\00000" -/* offset=1781 */ "Frontend_Bound_SMT\000\000idq_uops_not_delivered.core / (4 * (cpu_clk_unhalted.thread / 2 * (1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk)))\000\000\000\000\000\000\000\00000" -/* offset=1947 */ "dcache_miss_cpi\000\000l1d\\-loads\\-misses / inst_retired.any\000\000\000\000\000\000\000\00000" -/* offset=2011 */ "icache_miss_cycles\000\000l1i\\-loads\\-misses / inst_retired.any\000\000\000\000\000\000\000\00000" -/* offset=2078 */ "cache_miss_cycles\000group1\000dcache_miss_cpi + icache_miss_cycles\000\000\000\000\000\000\000\00000" -/* offset=2149 */ "DCache_L2_All_Hits\000\000l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit\000\000\000\000\000\000\000\00000" -/* offset=2243 */ "DCache_L2_All_Miss\000\000max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + l2_rqsts.pf_miss + l2_rqsts.rfo_miss\000\000\000\000\000\000\000\00000" -/* offset=2377 */ "DCache_L2_All\000\000DCache_L2_All_Hits + DCache_L2_All_Miss\000\000\000\000\000\000\000\00000" -/* offset=2441 */ "DCache_L2_Hits\000\000d_ratio(DCache_L2_All_Hits, DCache_L2_All)\000\000\000\000\000\000\000\00000" -/* offset=2509 */ "DCache_L2_Misses\000\000d_ratio(DCache_L2_All_Miss, DCache_L2_All)\000\000\000\000\000\000\000\00000" -/* offset=2579 */ "M1\000\000ipc + M2\000\000\000\000\000\000\000\00000" -/* offset=2601 */ "M2\000\000ipc + M1\000\000\000\000\000\000\000\00000" -/* offset=2623 */ "M3\000\0001 / M3\000\000\000\000\000\000\000\00000" -/* offset=2643 */ "L1D_Cache_Fill_BW\000\00064 * l1d.replacement / 1e9 / duration_time\000\000\000\000\000\000\000\00000" +/* offset=0 */ "tool\000" +/* offset=5 */ "duration_time\000tool\000Wall clock interval time in nanoseconds\000config=1\000\00000\000\000" +/* offset=78 */ "user_time\000tool\000User (non-kernel) time in nanoseconds\000config=2\000\00000\000\000" +/* offset=145 */ "system_time\000tool\000System/kernel time in nanoseconds\000config=3\000\00000\000\000" +/* offset=210 */ "has_pmem\000tool\0001 if persistent memory installed otherwise 0\000config=4\000\00000\000\000" +/* offset=283 */ "num_cores\000tool\000Number of cores. A core consists of 1 or more thread, with each thread being associated with a logical Linux CPU\000config=5\000\00000\000\000" +/* offset=425 */ "num_cpus\000tool\000Number of logical Linux CPUs. There may be multiple such CPUs on a core\000config=6\000\00000\000\000" +/* offset=525 */ "num_cpus_online\000tool\000Number of online logical Linux CPUs. There may be multiple such CPUs on a core\000config=7\000\00000\000\000" +/* offset=639 */ "num_dies\000tool\000Number of dies. Each die has 1 or more cores\000config=8\000\00000\000\000" +/* offset=712 */ "num_packages\000tool\000Number of packages. Each package has 1 or more die\000config=9\000\00000\000\000" +/* offset=795 */ "slots\000tool\000Number of functional units that in parallel can execute parts of an instruction\000config=0xa\000\00000\000\000" +/* offset=902 */ "smt_on\000tool\0001 if simultaneous multithreading (aka hyperthreading) is enable otherwise 0\000config=0xb\000\00000\000\000" +/* offset=1006 */ "system_tsc_freq\000tool\000The amount a Time Stamp Counter (TSC) increases per second\000config=0xc\000\00000\000\000" +/* offset=1102 */ "default_core\000" +/* offset=1115 */ "bp_l1_btb_correct\000branch\000L1 BTB Correction\000event=0x8a\000\00000\000\000" +/* offset=1174 */ "bp_l2_btb_correct\000branch\000L2 BTB Correction\000event=0x8b\000\00000\000\000" +/* offset=1233 */ "l3_cache_rd\000cache\000L3 cache access, read\000event=0x40\000\00000\000Attributable Level 3 cache access, read\000" +/* offset=1328 */ "segment_reg_loads.any\000other\000Number of segment register loads\000event=6,period=200000,umask=0x80\000\00000\000\000" +/* offset=1427 */ "dispatch_blocked.any\000other\000Memory cluster signals to block micro-op dispatch for any reason\000event=9,period=200000,umask=0x20\000\00000\000\000" +/* offset=1557 */ "eist_trans\000other\000Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions\000event=0x3a,period=200000\000\00000\000\000" +/* offset=1672 */ "hisi_sccl,ddrc\000" +/* offset=1687 */ "uncore_hisi_ddrc.flux_wcmd\000uncore\000DDRC write commands\000event=2\000\00000\000DDRC write commands\000" +/* offset=1773 */ "uncore_cbox\000" +/* offset=1785 */ "unc_cbo_xsnp_response.miss_eviction\000uncore\000A cross-core snoop resulted from L3 Eviction which misses in some processor core\000event=0x22,umask=0x81\000\00000\000A cross-core snoop resulted from L3 Eviction which misses in some processor core\000" +/* offset=2016 */ "event-hyphen\000uncore\000UNC_CBO_HYPHEN\000event=0xe0\000\00000\000UNC_CBO_HYPHEN\000" +/* offset=2081 */ "event-two-hyph\000uncore\000UNC_CBO_TWO_HYPH\000event=0xc0\000\00000\000UNC_CBO_TWO_HYPH\000" +/* offset=2152 */ "hisi_sccl,l3c\000" +/* offset=2166 */ "uncore_hisi_l3c.rd_hit_cpipe\000uncore\000Total read hits\000event=7\000\00000\000Total read hits\000" +/* offset=2246 */ "uncore_imc_free_running\000" +/* offset=2270 */ "uncore_imc_free_running.cache_miss\000uncore\000Total cache misses\000event=0x12\000\00000\000Total cache misses\000" +/* offset=2365 */ "uncore_imc\000" +/* offset=2376 */ "uncore_imc.cache_hits\000uncore\000Total cache hits\000event=0x34\000\00000\000Total cache hits\000" +/* offset=2454 */ "uncore_sys_ddr_pmu\000" +/* offset=2473 */ "sys_ddr_pmu.write_cycles\000uncore\000ddr write-cycles event\000event=0x2b\000v8\00000\000\000" +/* offset=2546 */ "uncore_sys_ccn_pmu\000" +/* offset=2565 */ "sys_ccn_pmu.read_cycles\000uncore\000ccn read-cycles event\000config=0x2c\0000x01\00000\000\000" +/* offset=2639 */ "uncore_sys_cmn_pmu\000" +/* offset=2658 */ "sys_cmn_pmu.hnf_cache_miss\000uncore\000Counts total cache misses in first lookup result (high priority)\000eventid=1,type=5\000(434|436|43c|43a).*\00000\000\000" +/* offset=2798 */ "CPI\000\0001 / IPC\000\000\000\000\000\000\000\00000" +/* offset=2820 */ "IPC\000group1\000inst_retired.any / cpu_clk_unhalted.thread\000\000\000\000\000\000\000\00000" +/* offset=2883 */ "Frontend_Bound_SMT\000\000idq_uops_not_delivered.core / (4 * (cpu_clk_unhalted.thread / 2 * (1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk)))\000\000\000\000\000\000\000\00000" +/* offset=3049 */ "dcache_miss_cpi\000\000l1d\\-loads\\-misses / inst_retired.any\000\000\000\000\000\000\000\00000" +/* offset=3113 */ "icache_miss_cycles\000\000l1i\\-loads\\-misses / inst_retired.any\000\000\000\000\000\000\000\00000" +/* offset=3180 */ "cache_miss_cycles\000group1\000dcache_miss_cpi + icache_miss_cycles\000\000\000\000\000\000\000\00000" +/* offset=3251 */ "DCache_L2_All_Hits\000\000l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit\000\000\000\000\000\000\000\00000" +/* offset=3345 */ "DCache_L2_All_Miss\000\000max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + l2_rqsts.pf_miss + l2_rqsts.rfo_miss\000\000\000\000\000\000\000\00000" +/* offset=3479 */ "DCache_L2_All\000\000DCache_L2_All_Hits + DCache_L2_All_Miss\000\000\000\000\000\000\000\00000" +/* offset=3543 */ "DCache_L2_Hits\000\000d_ratio(DCache_L2_All_Hits, DCache_L2_All)\000\000\000\000\000\000\000\00000" +/* offset=3611 */ "DCache_L2_Misses\000\000d_ratio(DCache_L2_All_Miss, DCache_L2_All)\000\000\000\000\000\000\000\00000" +/* offset=3681 */ "M1\000\000ipc + M2\000\000\000\000\000\000\000\00000" +/* offset=3703 */ "M2\000\000ipc + M1\000\000\000\000\000\000\000\00000" +/* offset=3725 */ "M3\000\0001 / M3\000\000\000\000\000\000\000\00000" +/* offset=3745 */ "L1D_Cache_Fill_BW\000\00064 * l1d.replacement / 1e9 / duration_time\000\000\000\000\000\000\000\00000" ; +static const struct compact_pmu_event pmu_events__common_tool[] = { +{ 5 }, /* duration_time\000tool\000Wall clock interval time in nanoseconds\000config=1\000\00000\000\000 */ +{ 210 }, /* has_pmem\000tool\0001 if persistent memory installed otherwise 0\000config=4\000\00000\000\000 */ +{ 283 }, /* num_cores\000tool\000Number of cores. A core consists of 1 or more thread, with each thread being associated with a logical Linux CPU\000config=5\000\00000\000\000 */ +{ 425 }, /* num_cpus\000tool\000Number of logical Linux CPUs. There may be multiple such CPUs on a core\000config=6\000\00000\000\000 */ +{ 525 }, /* num_cpus_online\000tool\000Number of online logical Linux CPUs. There may be multiple such CPUs on a core\000config=7\000\00000\000\000 */ +{ 639 }, /* num_dies\000tool\000Number of dies. Each die has 1 or more cores\000config=8\000\00000\000\000 */ +{ 712 }, /* num_packages\000tool\000Number of packages. Each package has 1 or more die\000config=9\000\00000\000\000 */ +{ 795 }, /* slots\000tool\000Number of functional units that in parallel can execute parts of an instruction\000config=0xa\000\00000\000\000 */ +{ 902 }, /* smt_on\000tool\0001 if simultaneous multithreading (aka hyperthreading) is enable otherwise 0\000config=0xb\000\00000\000\000 */ +{ 145 }, /* system_time\000tool\000System/kernel time in nanoseconds\000config=3\000\00000\000\000 */ +{ 1006 }, /* system_tsc_freq\000tool\000The amount a Time Stamp Counter (TSC) increases per second\000config=0xc\000\00000\000\000 */ +{ 78 }, /* user_time\000tool\000User (non-kernel) time in nanoseconds\000config=2\000\00000\000\000 */ + +}; + +const struct pmu_table_entry pmu_events__common[] = { +{ + .entries = pmu_events__common_tool, + .num_entries = ARRAY_SIZE(pmu_events__common_tool), + .pmu_name = { 0 /* tool\000 */ }, +}, +}; + static const struct compact_pmu_event pmu_events__test_soc_cpu_default_core[] = { -{ 13 }, /* bp_l1_btb_correct\000branch\000L1 BTB Correction\000event=0x8a\000\00000\000\000 */ -{ 72 }, /* bp_l2_btb_correct\000branch\000L2 BTB Correction\000event=0x8b\000\00000\000\000 */ -{ 325 }, /* dispatch_blocked.any\000other\000Memory cluster signals to block micro-op dispatch for any reason\000event=9,period=200000,umask=0x20\000\00000\000\000 */ -{ 455 }, /* eist_trans\000other\000Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions\000event=0x3a,period=200000\000\00000\000\000 */ -{ 131 }, /* l3_cache_rd\000cache\000L3 cache access, read\000event=0x40\000\00000\000Attributable Level 3 cache access, read\000 */ -{ 226 }, /* segment_reg_loads.any\000other\000Number of segment register loads\000event=6,period=200000,umask=0x80\000\00000\000\000 */ +{ 1115 }, /* bp_l1_btb_correct\000branch\000L1 BTB Correction\000event=0x8a\000\00000\000\000 */ +{ 1174 }, /* bp_l2_btb_correct\000branch\000L2 BTB Correction\000event=0x8b\000\00000\000\000 */ +{ 1427 }, /* dispatch_blocked.any\000other\000Memory cluster signals to block micro-op dispatch for any reason\000event=9,period=200000,umask=0x20\000\00000\000\000 */ +{ 1557 }, /* eist_trans\000other\000Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions\000event=0x3a,period=200000\000\00000\000\000 */ +{ 1233 }, /* l3_cache_rd\000cache\000L3 cache access, read\000event=0x40\000\00000\000Attributable Level 3 cache access, read\000 */ +{ 1328 }, /* segment_reg_loads.any\000other\000Number of segment register loads\000event=6,period=200000,umask=0x80\000\00000\000\000 */ }; static const struct compact_pmu_event pmu_events__test_soc_cpu_hisi_sccl_ddrc[] = { -{ 585 }, /* uncore_hisi_ddrc.flux_wcmd\000uncore\000DDRC write commands\000event=2\000\00000\000DDRC write commands\000 */ +{ 1687 }, /* uncore_hisi_ddrc.flux_wcmd\000uncore\000DDRC write commands\000event=2\000\00000\000DDRC write commands\000 */ }; static const struct compact_pmu_event pmu_events__test_soc_cpu_hisi_sccl_l3c[] = { -{ 1064 }, /* uncore_hisi_l3c.rd_hit_cpipe\000uncore\000Total read hits\000event=7\000\00000\000Total read hits\000 */ +{ 2166 }, /* uncore_hisi_l3c.rd_hit_cpipe\000uncore\000Total read hits\000event=7\000\00000\000Total read hits\000 */ }; static const struct compact_pmu_event pmu_events__test_soc_cpu_uncore_cbox[] = { -{ 914 }, /* event-hyphen\000uncore\000UNC_CBO_HYPHEN\000event=0xe0\000\00000\000UNC_CBO_HYPHEN\000 */ -{ 979 }, /* event-two-hyph\000uncore\000UNC_CBO_TWO_HYPH\000event=0xc0\000\00000\000UNC_CBO_TWO_HYPH\000 */ -{ 683 }, /* unc_cbo_xsnp_response.miss_eviction\000uncore\000A cross-core snoop resulted from L3 Eviction which misses in some processor core\000event=0x22,umask=0x81\000\00000\000A cross-core snoop resulted from L3 Eviction which misses in some processor core\000 */ +{ 2016 }, /* event-hyphen\000uncore\000UNC_CBO_HYPHEN\000event=0xe0\000\00000\000UNC_CBO_HYPHEN\000 */ +{ 2081 }, /* event-two-hyph\000uncore\000UNC_CBO_TWO_HYPH\000event=0xc0\000\00000\000UNC_CBO_TWO_HYPH\000 */ +{ 1785 }, /* unc_cbo_xsnp_response.miss_eviction\000uncore\000A cross-core snoop resulted from L3 Eviction which misses in some processor core\000event=0x22,umask=0x81\000\00000\000A cross-core snoop resulted from L3 Eviction which misses in some processor core\000 */ }; static const struct compact_pmu_event pmu_events__test_soc_cpu_uncore_imc[] = { -{ 1274 }, /* uncore_imc.cache_hits\000uncore\000Total cache hits\000event=0x34\000\00000\000Total cache hits\000 */ +{ 2376 }, /* uncore_imc.cache_hits\000uncore\000Total cache hits\000event=0x34\000\00000\000Total cache hits\000 */ }; static const struct compact_pmu_event pmu_events__test_soc_cpu_uncore_imc_free_running[] = { -{ 1168 }, /* uncore_imc_free_running.cache_miss\000uncore\000Total cache misses\000event=0x12\000\00000\000Total cache misses\000 */ +{ 2270 }, /* uncore_imc_free_running.cache_miss\000uncore\000Total cache misses\000event=0x12\000\00000\000Total cache misses\000 */ }; @@ -92,51 +129,51 @@ const struct pmu_table_entry pmu_events__test_soc_cpu[] = { { .entries = pmu_events__test_soc_cpu_default_core, .num_entries = ARRAY_SIZE(pmu_events__test_soc_cpu_default_core), - .pmu_name = { 0 /* default_core\000 */ }, + .pmu_name = { 1102 /* default_core\000 */ }, }, { .entries = pmu_events__test_soc_cpu_hisi_sccl_ddrc, .num_entries = ARRAY_SIZE(pmu_events__test_soc_cpu_hisi_sccl_ddrc), - .pmu_name = { 570 /* hisi_sccl,ddrc\000 */ }, + .pmu_name = { 1672 /* hisi_sccl,ddrc\000 */ }, }, { .entries = pmu_events__test_soc_cpu_hisi_sccl_l3c, .num_entries = ARRAY_SIZE(pmu_events__test_soc_cpu_hisi_sccl_l3c), - .pmu_name = { 1050 /* hisi_sccl,l3c\000 */ }, + .pmu_name = { 2152 /* hisi_sccl,l3c\000 */ }, }, { .entries = pmu_events__test_soc_cpu_uncore_cbox, .num_entries = ARRAY_SIZE(pmu_events__test_soc_cpu_uncore_cbox), - .pmu_name = { 671 /* uncore_cbox\000 */ }, + .pmu_name = { 1773 /* uncore_cbox\000 */ }, }, { .entries = pmu_events__test_soc_cpu_uncore_imc, .num_entries = ARRAY_SIZE(pmu_events__test_soc_cpu_uncore_imc), - .pmu_name = { 1263 /* uncore_imc\000 */ }, + .pmu_name = { 2365 /* uncore_imc\000 */ }, }, { .entries = pmu_events__test_soc_cpu_uncore_imc_free_running, .num_entries = ARRAY_SIZE(pmu_events__test_soc_cpu_uncore_imc_free_running), - .pmu_name = { 1144 /* uncore_imc_free_running\000 */ }, + .pmu_name = { 2246 /* uncore_imc_free_running\000 */ }, }, }; static const struct compact_pmu_event pmu_metrics__test_soc_cpu_default_core[] = { -{ 1696 }, /* CPI\000\0001 / IPC\000\000\000\000\000\000\000\00000 */ -{ 2377 }, /* DCache_L2_All\000\000DCache_L2_All_Hits + DCache_L2_All_Miss\000\000\000\000\000\000\000\00000 */ -{ 2149 }, /* DCache_L2_All_Hits\000\000l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit\000\000\000\000\000\000\000\00000 */ -{ 2243 }, /* DCache_L2_All_Miss\000\000max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + l2_rqsts.pf_miss + l2_rqsts.rfo_miss\000\000\000\000\000\000\000\00000 */ -{ 2441 }, /* DCache_L2_Hits\000\000d_ratio(DCache_L2_All_Hits, DCache_L2_All)\000\000\000\000\000\000\000\00000 */ -{ 2509 }, /* DCache_L2_Misses\000\000d_ratio(DCache_L2_All_Miss, DCache_L2_All)\000\000\000\000\000\000\000\00000 */ -{ 1781 }, /* Frontend_Bound_SMT\000\000idq_uops_not_delivered.core / (4 * (cpu_clk_unhalted.thread / 2 * (1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk)))\000\000\000\000\000\000\000\00000 */ -{ 1718 }, /* IPC\000group1\000inst_retired.any / cpu_clk_unhalted.thread\000\000\000\000\000\000\000\00000 */ -{ 2643 }, /* L1D_Cache_Fill_BW\000\00064 * l1d.replacement / 1e9 / duration_time\000\000\000\000\000\000\000\00000 */ -{ 2579 }, /* M1\000\000ipc + M2\000\000\000\000\000\000\000\00000 */ -{ 2601 }, /* M2\000\000ipc + M1\000\000\000\000\000\000\000\00000 */ -{ 2623 }, /* M3\000\0001 / M3\000\000\000\000\000\000\000\00000 */ -{ 2078 }, /* cache_miss_cycles\000group1\000dcache_miss_cpi + icache_miss_cycles\000\000\000\000\000\000\000\00000 */ -{ 1947 }, /* dcache_miss_cpi\000\000l1d\\-loads\\-misses / inst_retired.any\000\000\000\000\000\000\000\00000 */ -{ 2011 }, /* icache_miss_cycles\000\000l1i\\-loads\\-misses / inst_retired.any\000\000\000\000\000\000\000\00000 */ +{ 2798 }, /* CPI\000\0001 / IPC\000\000\000\000\000\000\000\00000 */ +{ 3479 }, /* DCache_L2_All\000\000DCache_L2_All_Hits + DCache_L2_All_Miss\000\000\000\000\000\000\000\00000 */ +{ 3251 }, /* DCache_L2_All_Hits\000\000l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit\000\000\000\000\000\000\000\00000 */ +{ 3345 }, /* DCache_L2_All_Miss\000\000max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + l2_rqsts.pf_miss + l2_rqsts.rfo_miss\000\000\000\000\000\000\000\00000 */ +{ 3543 }, /* DCache_L2_Hits\000\000d_ratio(DCache_L2_All_Hits, DCache_L2_All)\000\000\000\000\000\000\000\00000 */ +{ 3611 }, /* DCache_L2_Misses\000\000d_ratio(DCache_L2_All_Miss, DCache_L2_All)\000\000\000\000\000\000\000\00000 */ +{ 2883 }, /* Frontend_Bound_SMT\000\000idq_uops_not_delivered.core / (4 * (cpu_clk_unhalted.thread / 2 * (1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk)))\000\000\000\000\000\000\000\00000 */ +{ 2820 }, /* IPC\000group1\000inst_retired.any / cpu_clk_unhalted.thread\000\000\000\000\000\000\000\00000 */ +{ 3745 }, /* L1D_Cache_Fill_BW\000\00064 * l1d.replacement / 1e9 / duration_time\000\000\000\000\000\000\000\00000 */ +{ 3681 }, /* M1\000\000ipc + M2\000\000\000\000\000\000\000\00000 */ +{ 3703 }, /* M2\000\000ipc + M1\000\000\000\000\000\000\000\00000 */ +{ 3725 }, /* M3\000\0001 / M3\000\000\000\000\000\000\000\00000 */ +{ 3180 }, /* cache_miss_cycles\000group1\000dcache_miss_cpi + icache_miss_cycles\000\000\000\000\000\000\000\00000 */ +{ 3049 }, /* dcache_miss_cpi\000\000l1d\\-loads\\-misses / inst_retired.any\000\000\000\000\000\000\000\00000 */ +{ 3113 }, /* icache_miss_cycles\000\000l1i\\-loads\\-misses / inst_retired.any\000\000\000\000\000\000\000\00000 */ }; @@ -144,18 +181,18 @@ const struct pmu_table_entry pmu_metrics__test_soc_cpu[] = { { .entries = pmu_metrics__test_soc_cpu_default_core, .num_entries = ARRAY_SIZE(pmu_metrics__test_soc_cpu_default_core), - .pmu_name = { 0 /* default_core\000 */ }, + .pmu_name = { 1102 /* default_core\000 */ }, }, }; static const struct compact_pmu_event pmu_events__test_soc_sys_uncore_sys_ccn_pmu[] = { -{ 1463 }, /* sys_ccn_pmu.read_cycles\000uncore\000ccn read-cycles event\000config=0x2c\0000x01\00000\000\000 */ +{ 2565 }, /* sys_ccn_pmu.read_cycles\000uncore\000ccn read-cycles event\000config=0x2c\0000x01\00000\000\000 */ }; static const struct compact_pmu_event pmu_events__test_soc_sys_uncore_sys_cmn_pmu[] = { -{ 1556 }, /* sys_cmn_pmu.hnf_cache_miss\000uncore\000Counts total cache misses in first lookup result (high priority)\000eventid=1,type=5\000(434|436|43c|43a).*\00000\000\000 */ +{ 2658 }, /* sys_cmn_pmu.hnf_cache_miss\000uncore\000Counts total cache misses in first lookup result (high priority)\000eventid=1,type=5\000(434|436|43c|43a).*\00000\000\000 */ }; static const struct compact_pmu_event pmu_events__test_soc_sys_uncore_sys_ddr_pmu[] = { -{ 1371 }, /* sys_ddr_pmu.write_cycles\000uncore\000ddr write-cycles event\000event=0x2b\000v8\00000\000\000 */ +{ 2473 }, /* sys_ddr_pmu.write_cycles\000uncore\000ddr write-cycles event\000event=0x2b\000v8\00000\000\000 */ }; @@ -163,17 +200,17 @@ const struct pmu_table_entry pmu_events__test_soc_sys[] = { { .entries = pmu_events__test_soc_sys_uncore_sys_ccn_pmu, .num_entries = ARRAY_SIZE(pmu_events__test_soc_sys_uncore_sys_ccn_pmu), - .pmu_name = { 1444 /* uncore_sys_ccn_pmu\000 */ }, + .pmu_name = { 2546 /* uncore_sys_ccn_pmu\000 */ }, }, { .entries = pmu_events__test_soc_sys_uncore_sys_cmn_pmu, .num_entries = ARRAY_SIZE(pmu_events__test_soc_sys_uncore_sys_cmn_pmu), - .pmu_name = { 1537 /* uncore_sys_cmn_pmu\000 */ }, + .pmu_name = { 2639 /* uncore_sys_cmn_pmu\000 */ }, }, { .entries = pmu_events__test_soc_sys_uncore_sys_ddr_pmu, .num_entries = ARRAY_SIZE(pmu_events__test_soc_sys_uncore_sys_ddr_pmu), - .pmu_name = { 1352 /* uncore_sys_ddr_pmu\000 */ }, + .pmu_name = { 2454 /* uncore_sys_ddr_pmu\000 */ }, }, }; @@ -210,6 +247,15 @@ struct pmu_events_map { * table of PMU events. */ const struct pmu_events_map pmu_events_map[] = { +{ + .arch = "common", + .cpuid = "common", + .event_table = { + .pmus = pmu_events__common, + .num_pmus = ARRAY_SIZE(pmu_events__common), + }, + .metric_table = {}, +}, { .arch = "testarch", .cpuid = "testcpu", diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py index d46a22fb5573..6e71b09dbc2a 100755 --- a/tools/perf/pmu-events/jevents.py +++ b/tools/perf/pmu-events/jevents.py @@ -292,6 +292,7 @@ class JsonEvent: 'cpu_atom': 'cpu_atom', 'ali_drw': 'ali_drw', 'arm_cmn': 'arm_cmn', + 'tool': 'tool', } return table[unit] if unit in table else f'uncore_{unit.lower()}' @@ -721,6 +722,17 @@ const struct pmu_events_map pmu_events_map[] = { \t\t.num_pmus = ARRAY_SIZE(pmu_metrics__test_soc_cpu), \t} }, +""") + elif arch == 'common': + _args.output_file.write("""{ +\t.arch = "common", +\t.cpuid = "common", +\t.event_table = { +\t\t.pmus = pmu_events__common, +\t\t.num_pmus = ARRAY_SIZE(pmu_events__common), +\t}, +\t.metric_table = {}, +}, """) else: with open(f'{_args.starting_dir}/{arch}/mapfile.csv') as csvfile: @@ -1241,7 +1253,7 @@ def main() -> None: if len(parents) == _args.model.split(',')[0].count('/'): # We're testing the correct directory. item_path = '/'.join(parents) + ('/' if len(parents) > 0 else '') + item.name - if 'test' not in item_path and item_path not in _args.model.split(','): + if 'test' not in item_path and 'common' not in item_path and item_path not in _args.model.split(','): continue action(parents, item) if item.is_dir(): @@ -1289,7 +1301,7 @@ struct pmu_table_entry { for item in os.scandir(_args.starting_dir): if not item.is_dir(): continue - if item.name == _args.arch or _args.arch == 'all' or item.name == 'test': + if item.name == _args.arch or _args.arch == 'all' or item.name == 'test' or item.name == 'common': archs.append(item.name) if len(archs) < 2 and _args.arch != 'none': -- cgit v1.2.3 From 609aa2667f67c1588d4e741110265f74b7713177 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:12 -0700 Subject: perf tool_pmu: Switch to standard pmu functions and json descriptions Use the regular PMU approaches with tool json events to reduce the amount of special tool_pmu code - tool_pmu__config_terms and tool_pmu__for_each_event_cb are removed. Some functions remain, like tool_pmu__str_to_event, as conveniences to metricgroups. Add tool_pmu__skip_event/tool_pmu__num_skip_events to handle the case that tool json events shouldn't appear on certain architectures. This isn't done in jevents.py due to complexity in the empty-pmu-events.c and when all vendor json is built into the tool. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-10-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/pmu.c | 26 +++++------ tools/perf/util/pmus.c | 4 +- tools/perf/util/tool_pmu.c | 109 +++++++++++++-------------------------------- tools/perf/util/tool_pmu.h | 12 ++--- 4 files changed, 46 insertions(+), 105 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 9228650a62d2..0789758598c0 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1549,9 +1549,6 @@ int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, { bool zero = !!pmu->perf_event_attr_init_default; - if (perf_pmu__is_tool(pmu)) - return tool_pmu__config_terms(attr, head_terms, err); - /* Fake PMU doesn't have proper terms so nothing to configure in attr. */ if (perf_pmu__is_fake(pmu)) return 0; @@ -1664,8 +1661,8 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct parse_events_terms *head_ info->scale = 0.0; info->snapshot = false; - /* Tool/fake PMU doesn't rewrite terms. */ - if (perf_pmu__is_tool(pmu) || perf_pmu__is_fake(pmu)) + /* Fake PMU doesn't rewrite terms. */ + if (perf_pmu__is_fake(pmu)) goto out; list_for_each_entry_safe(term, h, &head_terms->terms, list) { @@ -1835,8 +1832,8 @@ bool perf_pmu__have_event(struct perf_pmu *pmu, const char *name) { if (!name) return false; - if (perf_pmu__is_tool(pmu)) - return tool_pmu__str_to_event(name) != TOOL_PMU__EVENT_NONE; + if (perf_pmu__is_tool(pmu) && tool_pmu__skip_event(name)) + return false; if (perf_pmu__find_alias(pmu, name, /*load=*/ true) != NULL) return true; if (pmu->cpu_aliases_added || !pmu->events_table) @@ -1848,9 +1845,6 @@ size_t perf_pmu__num_events(struct perf_pmu *pmu) { size_t nr; - if (perf_pmu__is_tool(pmu)) - return tool_pmu__num_events(); - pmu_aliases_parse(pmu); nr = pmu->sysfs_aliases + pmu->sys_json_aliases; @@ -1861,6 +1855,9 @@ size_t perf_pmu__num_events(struct perf_pmu *pmu) else assert(pmu->cpu_json_aliases == 0); + if (perf_pmu__is_tool(pmu)) + nr -= tool_pmu__num_skip_events(); + return pmu->selectable ? nr + 1 : nr; } @@ -1911,15 +1908,15 @@ int perf_pmu__for_each_event(struct perf_pmu *pmu, bool skip_duplicate_pmus, int ret = 0; struct strbuf sb; - if (perf_pmu__is_tool(pmu)) - return tool_pmu__for_each_event_cb(pmu, state, cb); - strbuf_init(&sb, /*hint=*/ 0); pmu_aliases_parse(pmu); pmu_add_cpu_aliases(pmu); list_for_each_entry(event, &pmu->aliases, list) { size_t buf_used, pmu_name_len; + if (perf_pmu__is_tool(pmu) && tool_pmu__skip_event(event->name)) + continue; + info.pmu_name = event->pmu_name ?: pmu->name; pmu_name_len = pmu_deduped_name_len(pmu, info.pmu_name, skip_duplicate_pmus); @@ -2325,9 +2322,6 @@ const char *perf_pmu__name_from_config(struct perf_pmu *pmu, u64 config) if (!pmu) return NULL; - if (perf_pmu__is_tool(pmu)) - return tool_pmu__event_to_str(config); - pmu_aliases_parse(pmu); pmu_add_cpu_aliases(pmu); list_for_each_entry(event, &pmu->aliases, list) { diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c index 6e657c44de58..107de86c2637 100644 --- a/tools/perf/util/pmus.c +++ b/tools/perf/util/pmus.c @@ -440,6 +440,7 @@ static int perf_pmus__print_pmu_events__callback(void *vstate, pr_err("Unexpected event %s/%s/\n", info->pmu->name, info->name); return 1; } + assert(info->pmu != NULL || info->name != NULL); s = &state->aliases[state->index]; s->pmu = info->pmu; #define COPY_STR(str) s->str = info->str ? strdup(info->str) : NULL @@ -590,9 +591,6 @@ void perf_pmus__print_raw_pmu_events(const struct print_callbacks *print_cb, voi int len = pmu_name_len_no_suffix(pmu->name); const char *desc = "(see 'man perf-list' or 'man perf-record' on how to encode it)"; - if (perf_pmu__is_tool(pmu)) - continue; - if (!pmu->is_core) desc = NULL; diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c index cfdc09dece1e..ea9d50f02520 100644 --- a/tools/perf/util/tool_pmu.c +++ b/tools/perf/util/tool_pmu.c @@ -33,101 +33,54 @@ static const char *const tool_pmu__event_names[TOOL_PMU__EVENT_MAX] = { "system_tsc_freq", }; - -const char *tool_pmu__event_to_str(enum tool_pmu_event ev) -{ - if (ev > TOOL_PMU__EVENT_NONE && ev < TOOL_PMU__EVENT_MAX) - return tool_pmu__event_names[ev]; - - return NULL; -} - -enum tool_pmu_event tool_pmu__str_to_event(const char *str) +bool tool_pmu__skip_event(const char *name __maybe_unused) { - int i; - - tool_pmu__for_each_event(i) { - if (!strcasecmp(str, tool_pmu__event_names[i])) { #if !defined(__aarch64__) - /* The slots event should only appear on arm64. */ - if (i == TOOL_PMU__EVENT_SLOTS) - return TOOL_PMU__EVENT_NONE; + /* The slots event should only appear on arm64. */ + if (strcasecmp(name, "slots") == 0) + return true; #endif - return i; - } - } - return TOOL_PMU__EVENT_NONE; +#if !defined(__i386__) && !defined(__x86_64__) + /* The system_tsc_freq event should only appear on x86. */ + if (strcasecmp(name, "system_tsc_freq") == 0) + return true; +#endif + return false; } -static int tool_pmu__config_term(struct perf_event_attr *attr, - struct parse_events_term *term, - struct parse_events_error *err) +int tool_pmu__num_skip_events(void) { - if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER) { - enum tool_pmu_event ev = tool_pmu__str_to_event(term->config); + int num = 0; - if (ev == TOOL_PMU__EVENT_NONE) - goto err_out; - - attr->config = ev; - return 0; - } -err_out: - if (err) { - char *err_str; - - parse_events_error__handle(err, term->err_val, - asprintf(&err_str, - "unexpected tool event term (%s) %s", - parse_events__term_type_str(term->type_term), - term->config) < 0 - ? strdup("unexpected tool event term") - : err_str, - NULL); - } - return -EINVAL; +#if !defined(__aarch64__) + num++; +#endif +#if !defined(__i386__) && !defined(__x86_64__) + num++; +#endif + return num; } -int tool_pmu__config_terms(struct perf_event_attr *attr, - struct parse_events_terms *terms, - struct parse_events_error *err) +const char *tool_pmu__event_to_str(enum tool_pmu_event ev) { - struct parse_events_term *term; - - list_for_each_entry(term, &terms->terms, list) { - if (tool_pmu__config_term(attr, term, err)) - return -EINVAL; - } - - return 0; + if (ev > TOOL_PMU__EVENT_NONE && ev < TOOL_PMU__EVENT_MAX) + return tool_pmu__event_names[ev]; + return NULL; } -int tool_pmu__for_each_event_cb(struct perf_pmu *pmu, void *state, pmu_event_callback cb) +enum tool_pmu_event tool_pmu__str_to_event(const char *str) { - struct pmu_event_info info = { - .pmu = pmu, - .event_type_desc = "Tool event", - }; int i; + if (tool_pmu__skip_event(str)) + return TOOL_PMU__EVENT_NONE; + tool_pmu__for_each_event(i) { - int ret; - - info.name = tool_pmu__event_to_str(i); - info.alias = NULL; - info.scale_unit = NULL; - info.desc = NULL; - info.long_desc = NULL; - info.encoding_desc = NULL; - info.topic = NULL; - info.pmu_name = pmu->name; - info.deprecated = false; - ret = cb(state, &info); - if (ret) - return ret; + if (!strcasecmp(str, tool_pmu__event_names[i])) + return i; } - return 0; + return TOOL_PMU__EVENT_NONE; } bool perf_pmu__is_tool(const struct perf_pmu *pmu) @@ -546,6 +499,8 @@ struct perf_pmu *perf_pmus__tool_pmu(void) .caps = LIST_HEAD_INIT(tool.caps), .format = LIST_HEAD_INIT(tool.format), }; + if (!tool.events_table) + tool.events_table = find_core_events_table("common", "common"); return &tool; } diff --git a/tools/perf/util/tool_pmu.h b/tools/perf/util/tool_pmu.h index ecdf316525bb..a60184859080 100644 --- a/tools/perf/util/tool_pmu.h +++ b/tools/perf/util/tool_pmu.h @@ -29,17 +29,11 @@ enum tool_pmu_event { #define tool_pmu__for_each_event(ev) \ for ((ev) = TOOL_PMU__EVENT_DURATION_TIME; (ev) < TOOL_PMU__EVENT_MAX; ev++) -static inline size_t tool_pmu__num_events(void) -{ - return TOOL_PMU__EVENT_MAX - 1; -} - const char *tool_pmu__event_to_str(enum tool_pmu_event ev); enum tool_pmu_event tool_pmu__str_to_event(const char *str); -int tool_pmu__config_terms(struct perf_event_attr *attr, - struct parse_events_terms *terms, - struct parse_events_error *err); -int tool_pmu__for_each_event_cb(struct perf_pmu *pmu, void *state, pmu_event_callback cb); +bool tool_pmu__skip_event(const char *name); +int tool_pmu__num_skip_events(void); + bool tool_pmu__read_event(enum tool_pmu_event ev, u64 *result); u64 tool_pmu__cpu_slots_per_cycle(void); -- cgit v1.2.3 From 8c25df7af322040fdf5041e912af7cc810b0f86d Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 1 Oct 2024 20:20:13 -0700 Subject: perf tests: Add tool PMU test Ensure parsing with and without PMU creates events with the expected config values. This ensures the tool.json doesn't get out of sync with tool_pmu_event enum. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20241002032016.333748-11-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/Build | 1 + tools/perf/tests/builtin-test.c | 1 + tools/perf/tests/tests.h | 1 + tools/perf/tests/tool_pmu.c | 111 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 114 insertions(+) create mode 100644 tools/perf/tests/tool_pmu.c (limited to 'tools') diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index 5671ee530019..a771e4928247 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -67,6 +67,7 @@ perf-test-y += sigtrap.o perf-test-y += event_groups.o perf-test-y += symbols.o perf-test-y += util.o +perf-test-y += tool_pmu.o ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc)) perf-test-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 470a9709427d..3b30f258c395 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -73,6 +73,7 @@ static struct test_suite *generic_tests[] = { &suite__PERF_RECORD, &suite__pmu, &suite__pmu_events, + &suite__tool_pmu, &suite__dso_data, &suite__perf_evsel__roundtrip_name_test, #ifdef HAVE_LIBTRACEEVENT diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index 6ea2be86b7bf..1ed76d4156b6 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -83,6 +83,7 @@ DECLARE_SUITE(perf_evsel__tp_sched_test); DECLARE_SUITE(syscall_openat_tp_fields); DECLARE_SUITE(pmu); DECLARE_SUITE(pmu_events); +DECLARE_SUITE(tool_pmu); DECLARE_SUITE(attr); DECLARE_SUITE(dso_data); DECLARE_SUITE(dso_data_cache); diff --git a/tools/perf/tests/tool_pmu.c b/tools/perf/tests/tool_pmu.c new file mode 100644 index 000000000000..94d0dd8fd3cb --- /dev/null +++ b/tools/perf/tests/tool_pmu.c @@ -0,0 +1,111 @@ +// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) +#include "debug.h" +#include "evlist.h" +#include "parse-events.h" +#include "tests.h" +#include "tool_pmu.h" + +static int do_test(enum tool_pmu_event ev, bool with_pmu) +{ + struct evlist *evlist = evlist__new(); + struct evsel *evsel; + struct parse_events_error err; + int ret; + char str[128]; + bool found = false; + + if (!evlist) { + pr_err("evlist allocation failed\n"); + return TEST_FAIL; + } + + if (with_pmu) + snprintf(str, sizeof(str), "tool/%s/", tool_pmu__event_to_str(ev)); + else + strncpy(str, tool_pmu__event_to_str(ev), sizeof(str)); + + parse_events_error__init(&err); + ret = parse_events(evlist, str, &err); + if (ret) { + evlist__delete(evlist); + if (tool_pmu__skip_event(tool_pmu__event_to_str(ev))) { + ret = TEST_OK; + goto out; + } + + pr_debug("FAILED %s:%d failed to parse event '%s', err %d\n", + __FILE__, __LINE__, str, ret); + parse_events_error__print(&err, str); + ret = TEST_FAIL; + goto out; + } + + ret = TEST_OK; + if (with_pmu ? (evlist->core.nr_entries != 1) : (evlist->core.nr_entries < 1)) { + pr_debug("FAILED %s:%d Unexpected number of events for '%s' of %d\n", + __FILE__, __LINE__, str, evlist->core.nr_entries); + ret = TEST_FAIL; + goto out; + } + + evlist__for_each_entry(evlist, evsel) { + if (perf_pmu__is_tool(evsel->pmu)) { + if (evsel->core.attr.config != ev) { + pr_debug("FAILED %s:%d Unexpected config for '%s', %lld != %d\n", + __FILE__, __LINE__, str, evsel->core.attr.config, ev); + ret = TEST_FAIL; + goto out; + } + found = true; + } + } + + if (!found && !tool_pmu__skip_event(tool_pmu__event_to_str(ev))) { + pr_debug("FAILED %s:%d Didn't find tool event '%s' in parsed evsels\n", + __FILE__, __LINE__, str); + ret = TEST_FAIL; + } + +out: + evlist__delete(evlist); + return ret; +} + +static int test__tool_pmu_without_pmu(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + int i; + + tool_pmu__for_each_event(i) { + int ret = do_test(i, /*with_pmu=*/false); + + if (ret != TEST_OK) + return ret; + } + return TEST_OK; +} + +static int test__tool_pmu_with_pmu(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + int i; + + tool_pmu__for_each_event(i) { + int ret = do_test(i, /*with_pmu=*/true); + + if (ret != TEST_OK) + return ret; + } + return TEST_OK; +} + +static struct test_case tests__tool_pmu[] = { + TEST_CASE("Parsing without PMU name", tool_pmu_without_pmu), + TEST_CASE("Parsing with PMU name", tool_pmu_with_pmu), + { .name = NULL, } +}; + +struct test_suite suite__tool_pmu = { + .desc = "Tool PMU", + .test_cases = tests__tool_pmu, +}; -- cgit v1.2.3 From 48966a5a48cd48a499e7c431e09465ce0c092e38 Mon Sep 17 00:00:00 2001 From: Thomas Falcon Date: Thu, 10 Oct 2024 13:40:46 -0500 Subject: perf report: Display columns Predicted/Abort/Cycles in --branch-history The original commit message: " Use current sort mechanism but the real .se_cmp() just returns 0 so that new columns "Predicted", "Abort" and "Cycles" are created in display but actually these keys are not the sort keys. For example: Overhead Source:Line Symbol Shared Object Predicted Abort Cycles ........ ............ ........ ............. ......... ..... ...... 38.25% div.c:45 [.] main div 97.6% 0 3 " Update missed commit from series "perf report: Show branch flags/cycles in --branch-history callgraph view" to apply to current repository so that new columns described above are visible. Link to original series: https://lore.kernel.org/lkml/1477876794-30749-1-git-send-email-yao.jin@linux.intel.com/ Reported-by: Dr. David Alan Gilbert Suggested-by: Kan Liang Co-developed-by: Jin Yao Signed-off-by: Jin Yao Tested-by: Thomas Falcon Signed-off-by: Thomas Falcon Link: https://lore.kernel.org/r/20241010184046.203822-1-thomas.falcon@intel.com Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-report.txt | 8 +++ tools/perf/builtin-report.c | 6 +- tools/perf/util/hist.c | 3 + tools/perf/util/hist.h | 3 + tools/perf/util/sort.c | 113 ++++++++++++++++++++++++++++++- tools/perf/util/sort.h | 3 + 6 files changed, 134 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 7c66d81ab978..87f864519406 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -391,6 +391,14 @@ OPTIONS This allows to examine the path the program took to each sample. The data collection must have used -b (or -j) and -g. + Also show with some branch flags that can be: + - Predicted: display the average percentage of predicated branches. + (predicated number / total number) + - Abort: display the number of tsx aborted branches. + - Cycles: cycles in basic block. + + - iterations: display the average number of iterations in callchain list. + --addr2line=:: Path to addr2line binary. diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 5dc17ffee27a..36b344e39dd6 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -1271,6 +1271,10 @@ static int process_attr(const struct perf_tool *tool __maybe_unused, return 0; } +#define CALLCHAIN_BRANCH_SORT_ORDER \ + "srcline,symbol,dso,callchain_branch_predicted," \ + "callchain_branch_abort,callchain_branch_cycles" + int cmd_report(int argc, const char **argv) { struct perf_session *session; @@ -1639,7 +1643,7 @@ repeat: symbol_conf.use_callchain = true; callchain_register_param(&callchain_param); if (sort_order == NULL) - sort_order = "srcline,symbol,dso"; + sort_order = CALLCHAIN_BRANCH_SORT_ORDER; } if (report.mem_mode) { diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index f387e85a0087..fff134565801 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -218,6 +218,9 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h) hists__new_col_len(hists, HISTC_LOCAL_P_STAGE_CYC, 13); hists__new_col_len(hists, HISTC_GLOBAL_P_STAGE_CYC, 13); hists__new_col_len(hists, HISTC_ADDR, BITS_PER_LONG / 4 + 2); + hists__new_col_len(hists, HISTC_CALLCHAIN_BRANCH_PREDICTED, 9); + hists__new_col_len(hists, HISTC_CALLCHAIN_BRANCH_ABORT, 5); + hists__new_col_len(hists, HISTC_CALLCHAIN_BRANCH_CYCLES, 6); if (symbol_conf.nanosecs) hists__new_col_len(hists, HISTC_TIME, 16); diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 7d7ae94b4b31..1131056924d9 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -87,6 +87,9 @@ enum hist_column { HISTC_TYPE_OFFSET, HISTC_SYMBOL_OFFSET, HISTC_TYPE_CACHELINE, + HISTC_CALLCHAIN_BRANCH_PREDICTED, + HISTC_CALLCHAIN_BRANCH_ABORT, + HISTC_CALLCHAIN_BRANCH_CYCLES, HISTC_NR_COLS, /* Last entry */ }; diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 013020f33ece..168c488f0178 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -677,6 +677,102 @@ struct sort_entry sort_sym_ipc_null = { .se_width_idx = HISTC_SYMBOL_IPC, }; +/* --sort callchain_branch_predicted */ + +static int64_t +sort__callchain_branch_predicted_cmp(struct hist_entry *left __maybe_unused, + struct hist_entry *right __maybe_unused) +{ + return 0; +} + +static int hist_entry__callchain_branch_predicted_snprintf( + struct hist_entry *he, char *bf, size_t size, unsigned int width) +{ + u64 branch_count, predicted_count; + double percent = 0.0; + char str[32]; + + callchain_branch_counts(he->callchain, &branch_count, + &predicted_count, NULL, NULL); + + if (branch_count) + percent = predicted_count * 100.0 / branch_count; + + snprintf(str, sizeof(str), "%.1f%%", percent); + return repsep_snprintf(bf, size, "%-*.*s", width, width, str); +} + +struct sort_entry sort_callchain_branch_predicted = { + .se_header = "Predicted", + .se_cmp = sort__callchain_branch_predicted_cmp, + .se_snprintf = hist_entry__callchain_branch_predicted_snprintf, + .se_width_idx = HISTC_CALLCHAIN_BRANCH_PREDICTED, +}; + +/* --sort callchain_branch_abort */ + +static int64_t +sort__callchain_branch_abort_cmp(struct hist_entry *left __maybe_unused, + struct hist_entry *right __maybe_unused) +{ + return 0; +} + +static int hist_entry__callchain_branch_abort_snprintf(struct hist_entry *he, + char *bf, size_t size, + unsigned int width) +{ + u64 branch_count, abort_count; + char str[32]; + + callchain_branch_counts(he->callchain, &branch_count, + NULL, &abort_count, NULL); + + snprintf(str, sizeof(str), "%" PRId64, abort_count); + return repsep_snprintf(bf, size, "%-*.*s", width, width, str); +} + +struct sort_entry sort_callchain_branch_abort = { + .se_header = "Abort", + .se_cmp = sort__callchain_branch_abort_cmp, + .se_snprintf = hist_entry__callchain_branch_abort_snprintf, + .se_width_idx = HISTC_CALLCHAIN_BRANCH_ABORT, +}; + +/* --sort callchain_branch_cycles */ + +static int64_t +sort__callchain_branch_cycles_cmp(struct hist_entry *left __maybe_unused, + struct hist_entry *right __maybe_unused) +{ + return 0; +} + +static int hist_entry__callchain_branch_cycles_snprintf(struct hist_entry *he, + char *bf, size_t size, + unsigned int width) +{ + u64 branch_count, cycles_count, cycles = 0; + char str[32]; + + callchain_branch_counts(he->callchain, &branch_count, + NULL, NULL, &cycles_count); + + if (branch_count) + cycles = cycles_count / branch_count; + + snprintf(str, sizeof(str), "%" PRId64 "", cycles); + return repsep_snprintf(bf, size, "%-*.*s", width, width, str); +} + +struct sort_entry sort_callchain_branch_cycles = { + .se_header = "Cycles", + .se_cmp = sort__callchain_branch_cycles_cmp, + .se_snprintf = hist_entry__callchain_branch_cycles_snprintf, + .se_width_idx = HISTC_CALLCHAIN_BRANCH_CYCLES, +}; + /* --sort srcfile */ static char no_srcfile[1]; @@ -2456,6 +2552,15 @@ static struct sort_dimension bstack_sort_dimensions[] = { DIM(SORT_SYM_IPC, "ipc_lbr", sort_sym_ipc), DIM(SORT_ADDR_FROM, "addr_from", sort_addr_from), DIM(SORT_ADDR_TO, "addr_to", sort_addr_to), + DIM(SORT_CALLCHAIN_BRANCH_PREDICTED, + "callchain_branch_predicted", + sort_callchain_branch_predicted), + DIM(SORT_CALLCHAIN_BRANCH_ABORT, + "callchain_branch_abort", + sort_callchain_branch_abort), + DIM(SORT_CALLCHAIN_BRANCH_CYCLES, + "callchain_branch_cycles", + sort_callchain_branch_cycles) }; #undef DIM @@ -3484,7 +3589,13 @@ int sort_dimension__add(struct perf_hpp_list *list, const char *tok, if (!sd->name || strncasecmp(tok, sd->name, strlen(tok))) continue; - if (sort__mode != SORT_MODE__BRANCH) + if ((sort__mode != SORT_MODE__BRANCH) && + strncasecmp(tok, "callchain_branch_predicted", + strlen(tok)) && + strncasecmp(tok, "callchain_branch_abort", + strlen(tok)) && + strncasecmp(tok, "callchain_branch_cycles", + strlen(tok))) return -EINVAL; if (sd->entry == &sort_sym_from || sd->entry == &sort_sym_to) diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 9ff68c6786e7..a8572574e168 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -88,6 +88,9 @@ enum sort_type { SORT_SYM_IPC, SORT_ADDR_FROM, SORT_ADDR_TO, + SORT_CALLCHAIN_BRANCH_PREDICTED, + SORT_CALLCHAIN_BRANCH_ABORT, + SORT_CALLCHAIN_BRANCH_CYCLES, /* memory mode specific sort keys */ __SORT_MEMORY_MODE, -- cgit v1.2.3 From ec6c4be073237814f4dd7f56ef72f08760cfaa90 Mon Sep 17 00:00:00 2001 From: "Daniel T. Lee" Date: Fri, 11 Oct 2024 04:48:44 +0000 Subject: selftests/bpf: migrate cgroup sock create test for setting iface/mark/prio This patch migrates the old test for cgroup BPF that sets sk_bound_dev_if, mark, and priority when AF_INET{6} sockets are created. The most closely related tests under selftests are 'test_sock' and 'sockopt'. However, these existing tests serve different purposes. 'test_sock' focuses mainly on verifying the socket binding process, while 'sockopt' concentrates on testing the behavior of getsockopt and setsockopt operations for various socket options. Neither of these existing tests directly covers the ability of cgroup BPF to set socket attributes such as sk_bound_dev_if, mark, and priority during socket creation. To address this gap, this patch introduces a migration of the old cgroup socket attribute test, now included as the 'sock_create' test in selftests/bpf. This ensures that the ability to configure these attributes during socket creation is properly tested. Signed-off-by: Daniel T. Lee Link: https://lore.kernel.org/r/20241011044847.51584-2-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov --- .../testing/selftests/bpf/prog_tests/sock_create.c | 256 +++++++++++++++++++++ 1 file changed, 256 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/sock_create.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/sock_create.c b/tools/testing/selftests/bpf/prog_tests/sock_create.c new file mode 100644 index 000000000000..072910c05c99 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/sock_create.c @@ -0,0 +1,256 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include "cgroup_helpers.h" + +static char bpf_log_buf[4096]; +static bool verbose; + +static struct sock_create_test { + const char *descr; + const struct bpf_insn insns[64]; + enum bpf_attach_type attach_type; + enum bpf_attach_type expected_attach_type; + + int domain; + int type; + + int optname; + int optval; +} tests[] = { + { + .descr = "AF_INET set priority", + .insns = { + /* r3 = 123 (priority) */ + BPF_MOV64_IMM(BPF_REG_3, 123), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_3, + offsetof(struct bpf_sock, priority)), + + /* return 1 */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET, + .type = SOCK_DGRAM, + + .optname = SO_PRIORITY, + .optval = 123, + }, + { + .descr = "AF_INET6 set priority", + .insns = { + /* r3 = 123 (priority) */ + BPF_MOV64_IMM(BPF_REG_3, 123), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_3, + offsetof(struct bpf_sock, priority)), + + /* return 1 */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET6, + .type = SOCK_DGRAM, + + .optname = SO_PRIORITY, + .optval = 123, + }, + { + .descr = "AF_INET set mark", + .insns = { + BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), + + /* get uid of process */ + BPF_EMIT_CALL(BPF_FUNC_get_current_uid_gid), + BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 0xffffffff), + + /* if uid is 0, use given mark(666), else use uid as the mark */ + BPF_MOV64_REG(BPF_REG_3, BPF_REG_0), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_MOV64_IMM(BPF_REG_3, 666), + + BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_3, + offsetof(struct bpf_sock, mark)), + + /* return 1 */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET, + .type = SOCK_DGRAM, + + .optname = SO_MARK, + .optval = 666, + }, + { + .descr = "AF_INET6 set mark", + .insns = { + BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), + + /* get uid of process */ + BPF_EMIT_CALL(BPF_FUNC_get_current_uid_gid), + BPF_ALU64_IMM(BPF_AND, BPF_REG_0, 0xffffffff), + + /* if uid is 0, use given mark(666), else use uid as the mark */ + BPF_MOV64_REG(BPF_REG_3, BPF_REG_0), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_MOV64_IMM(BPF_REG_3, 666), + + BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_3, + offsetof(struct bpf_sock, mark)), + + /* return 1 */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET6, + .type = SOCK_DGRAM, + + .optname = SO_MARK, + .optval = 666, + }, + { + .descr = "AF_INET bound to iface", + .insns = { + /* r3 = 1 (lo interface) */ + BPF_MOV64_IMM(BPF_REG_3, 1), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_3, + offsetof(struct bpf_sock, bound_dev_if)), + + /* return 1 */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET, + .type = SOCK_DGRAM, + + .optname = SO_BINDTOIFINDEX, + .optval = 1, + }, + { + .descr = "AF_INET6 bound to iface", + .insns = { + /* r3 = 1 (lo interface) */ + BPF_MOV64_IMM(BPF_REG_3, 1), + BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_3, + offsetof(struct bpf_sock, bound_dev_if)), + + /* return 1 */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET6, + .type = SOCK_DGRAM, + + .optname = SO_BINDTOIFINDEX, + .optval = 1, + }, +}; + +static int load_prog(const struct bpf_insn *insns, + enum bpf_attach_type expected_attach_type) +{ + LIBBPF_OPTS(bpf_prog_load_opts, opts, + .expected_attach_type = expected_attach_type, + .log_level = 2, + .log_buf = bpf_log_buf, + .log_size = sizeof(bpf_log_buf), + ); + int fd, insns_cnt = 0; + + for (; + insns[insns_cnt].code != (BPF_JMP | BPF_EXIT); + insns_cnt++) { + } + insns_cnt++; + + fd = bpf_prog_load(BPF_PROG_TYPE_CGROUP_SOCK, NULL, "GPL", insns, + insns_cnt, &opts); + if (verbose && fd < 0) + fprintf(stderr, "%s\n", bpf_log_buf); + + return fd; +} + +static int run_test(int cgroup_fd, struct sock_create_test *test) +{ + int sock_fd, err, prog_fd, optval, ret = -1; + socklen_t optlen = sizeof(optval); + + prog_fd = load_prog(test->insns, test->expected_attach_type); + if (prog_fd < 0) { + log_err("Failed to load BPF program"); + return -1; + } + + err = bpf_prog_attach(prog_fd, cgroup_fd, test->attach_type, 0); + if (err < 0) { + log_err("Failed to attach BPF program"); + goto close_prog_fd; + } + + sock_fd = socket(test->domain, test->type, 0); + if (sock_fd < 0) { + log_err("Failed to create socket"); + goto detach_prog; + } + + err = getsockopt(sock_fd, SOL_SOCKET, test->optname, &optval, &optlen); + if (err) { + log_err("Failed to call getsockopt"); + goto cleanup; + } + + if (optval != test->optval) { + errno = 0; + log_err("getsockopt returned unexpected optval"); + goto cleanup; + } + + ret = 0; + +cleanup: + close(sock_fd); +detach_prog: + bpf_prog_detach2(prog_fd, cgroup_fd, test->attach_type); +close_prog_fd: + close(prog_fd); + return ret; +} + +void test_sock_create(void) +{ + int cgroup_fd, i; + + cgroup_fd = test__join_cgroup("/sock_create"); + if (!ASSERT_GE(cgroup_fd, 0, "join_cgroup")) + return; + + for (i = 0; i < ARRAY_SIZE(tests); i++) { + if (!test__start_subtest(tests[i].descr)) + continue; + + ASSERT_OK(run_test(cgroup_fd, &tests[i]), tests[i].descr); + } + + close(cgroup_fd); +} -- cgit v1.2.3 From 64a4658d6f766ca058e28277a4c2743525d7dc26 Mon Sep 17 00:00:00 2001 From: "Daniel T. Lee" Date: Fri, 11 Oct 2024 04:48:45 +0000 Subject: selftests/bpf: migrate cgroup sock create test for prohibiting sockets This patch continues the migration and removal process for cgroup sock_create tests to selftests. The test being migrated verifies the ability of cgroup BPF to block the creation of specific types of sockets using a verdict. Specifically, the test denies socket creation when the socket is of type AF_INET{6}, SOCK_DGRAM, and IPPROTO_ICMP{V6}. If the requested socket type matches these attributes, the cgroup BPF verdict blocks the socket creation. As with the previous commit, this test currently lacks coverage in selftests, so this patch migrates the functionality into the sock_create tests under selftests. This migration ensures that the socket creation blocking behavior with cgroup bpf program is properly tested within the selftest framework. Signed-off-by: Daniel T. Lee Link: https://lore.kernel.org/r/20241011044847.51584-3-danieltimlee@gmail.com Signed-off-by: Alexei Starovoitov --- .../testing/selftests/bpf/prog_tests/sock_create.c | 83 +++++++++++++++++++++- 1 file changed, 80 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/sock_create.c b/tools/testing/selftests/bpf/prog_tests/sock_create.c index 072910c05c99..17a3713621dd 100644 --- a/tools/testing/selftests/bpf/prog_tests/sock_create.c +++ b/tools/testing/selftests/bpf/prog_tests/sock_create.c @@ -6,6 +6,11 @@ static char bpf_log_buf[4096]; static bool verbose; +enum sock_create_test_error { + OK = 0, + DENY_CREATE, +}; + static struct sock_create_test { const char *descr; const struct bpf_insn insns[64]; @@ -14,9 +19,11 @@ static struct sock_create_test { int domain; int type; + int protocol; int optname; int optval; + enum sock_create_test_error error; } tests[] = { { .descr = "AF_INET set priority", @@ -164,6 +171,72 @@ static struct sock_create_test { .optname = SO_BINDTOIFINDEX, .optval = 1, }, + { + .descr = "block AF_INET, SOCK_DGRAM, IPPROTO_ICMP socket", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 1), /* r0 = verdict */ + + /* sock->family == AF_INET */ + BPF_LDX_MEM(BPF_H, BPF_REG_2, BPF_REG_1, + offsetof(struct bpf_sock, family)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_2, AF_INET, 5), + + /* sock->type == SOCK_DGRAM */ + BPF_LDX_MEM(BPF_H, BPF_REG_2, BPF_REG_1, + offsetof(struct bpf_sock, type)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_2, SOCK_DGRAM, 3), + + /* sock->protocol == IPPROTO_ICMP */ + BPF_LDX_MEM(BPF_H, BPF_REG_2, BPF_REG_1, + offsetof(struct bpf_sock, protocol)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_2, IPPROTO_ICMP, 1), + + /* return 0 (block) */ + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET, + .type = SOCK_DGRAM, + .protocol = IPPROTO_ICMP, + + .error = DENY_CREATE, + }, + { + .descr = "block AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6 socket", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 1), /* r0 = verdict */ + + /* sock->family == AF_INET6 */ + BPF_LDX_MEM(BPF_H, BPF_REG_2, BPF_REG_1, + offsetof(struct bpf_sock, family)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_2, AF_INET6, 5), + + /* sock->type == SOCK_DGRAM */ + BPF_LDX_MEM(BPF_H, BPF_REG_2, BPF_REG_1, + offsetof(struct bpf_sock, type)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_2, SOCK_DGRAM, 3), + + /* sock->protocol == IPPROTO_ICMPV6 */ + BPF_LDX_MEM(BPF_H, BPF_REG_2, BPF_REG_1, + offsetof(struct bpf_sock, protocol)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_2, IPPROTO_ICMPV6, 1), + + /* return 0 (block) */ + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET, + .type = SOCK_DGRAM, + .protocol = IPPROTO_ICMPV6, + + .error = DENY_CREATE, + }, }; static int load_prog(const struct bpf_insn *insns, @@ -208,9 +281,13 @@ static int run_test(int cgroup_fd, struct sock_create_test *test) goto close_prog_fd; } - sock_fd = socket(test->domain, test->type, 0); + sock_fd = socket(test->domain, test->type, test->protocol); if (sock_fd < 0) { - log_err("Failed to create socket"); + if (test->error == DENY_CREATE) + ret = 0; + else + log_err("Failed to create socket"); + goto detach_prog; } @@ -226,7 +303,7 @@ static int run_test(int cgroup_fd, struct sock_create_test *test) goto cleanup; } - ret = 0; + ret = test->error != OK; cleanup: close(sock_fd); -- cgit v1.2.3 From 4eba4723c5254ba8251ecb7094a5078d5c300646 Mon Sep 17 00:00:00 2001 From: Tomas Glozar Date: Fri, 11 Oct 2024 14:10:14 +0200 Subject: rtla/timerlat: Make timerlat_top_cpu->*_count unsigned long long Most fields of struct timerlat_top_cpu are unsigned long long, but the fields {irq,thread,user}_count are int (32-bit signed). This leads to overflow when tracing on a large number of CPUs for a long enough time: $ rtla timerlat top -a20 -c 1-127 -d 12h ... 0 12:00:00 | IRQ Timer Latency (us) | Thread Timer Latency (us) CPU COUNT | cur min avg max | cur min avg max 1 #43200096 | 0 0 1 2 | 3 2 6 12 ... 127 #43200096 | 0 0 1 2 | 3 2 5 11 ALL #119144 e4 | 0 5 4 | 2 28 16 The average latency should be 0-1 for IRQ and 5-6 for thread, but is reported as 5 and 28, about 4 to 5 times more, due to the count overflowing when summed over all CPUs: 43200096 * 127 = 5486412192, however, 1191444898 (= 5486412192 mod MAX_INT) is reported instead, as seen on the last line of the output, and the averages are thus ~4.6 times higher than they should be (5486412192 / 1191444898 = ~4.6). Fix the issue by changing {irq,thread,user}_count fields to unsigned long long, similarly to other fields in struct timerlat_top_cpu and to the count variable in timerlat_top_print_sum. Link: https://lore.kernel.org/20241011121015.2868751-1-tglozar@redhat.com Reported-by: Attila Fazekas Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/timerlat_top.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c index 94a2f5bbaeb7..7fb85c8ee3bc 100644 --- a/tools/tracing/rtla/src/timerlat_top.c +++ b/tools/tracing/rtla/src/timerlat_top.c @@ -54,9 +54,9 @@ struct timerlat_top_params { }; struct timerlat_top_cpu { - int irq_count; - int thread_count; - int user_count; + unsigned long long irq_count; + unsigned long long thread_count; + unsigned long long user_count; unsigned long long cur_irq; unsigned long long min_irq; @@ -280,7 +280,7 @@ static void timerlat_top_print(struct osnoise_tool *top, int cpu) /* * Unless trace is being lost, IRQ counter is always the max. */ - trace_seq_printf(s, "%3d #%-9d |", cpu, cpu_data->irq_count); + trace_seq_printf(s, "%3d #%-9llu |", cpu, cpu_data->irq_count); if (!cpu_data->irq_count) { trace_seq_printf(s, "%s %s %s %s |", no_value, no_value, no_value, no_value); -- cgit v1.2.3 From 76b3102148135945b013797fac9b206273f0f777 Mon Sep 17 00:00:00 2001 From: Tomas Glozar Date: Fri, 11 Oct 2024 14:10:15 +0200 Subject: rtla/timerlat: Make timerlat_hist_cpu->*_count unsigned long long Do the same fix as in previous commit also for timerlat-hist. Link: https://lore.kernel.org/20241011121015.2868751-2-tglozar@redhat.com Reported-by: Attila Fazekas Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/timerlat_hist.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c index 1f9137c592f4..d49c8f0855fe 100644 --- a/tools/tracing/rtla/src/timerlat_hist.c +++ b/tools/tracing/rtla/src/timerlat_hist.c @@ -62,9 +62,9 @@ struct timerlat_hist_cpu { int *thread; int *user; - int irq_count; - int thread_count; - int user_count; + unsigned long long irq_count; + unsigned long long thread_count; + unsigned long long user_count; unsigned long long min_irq; unsigned long long sum_irq; @@ -304,15 +304,15 @@ timerlat_print_summary(struct timerlat_hist_params *params, continue; if (!params->no_irq) - trace_seq_printf(trace->seq, "%9d ", + trace_seq_printf(trace->seq, "%9llu ", data->hist[cpu].irq_count); if (!params->no_thread) - trace_seq_printf(trace->seq, "%9d ", + trace_seq_printf(trace->seq, "%9llu ", data->hist[cpu].thread_count); if (params->user_hist) - trace_seq_printf(trace->seq, "%9d ", + trace_seq_printf(trace->seq, "%9llu ", data->hist[cpu].user_count); } trace_seq_printf(trace->seq, "\n"); @@ -488,15 +488,15 @@ timerlat_print_stats_all(struct timerlat_hist_params *params, trace_seq_printf(trace->seq, "count:"); if (!params->no_irq) - trace_seq_printf(trace->seq, "%9d ", + trace_seq_printf(trace->seq, "%9llu ", sum.irq_count); if (!params->no_thread) - trace_seq_printf(trace->seq, "%9d ", + trace_seq_printf(trace->seq, "%9llu ", sum.thread_count); if (params->user_hist) - trace_seq_printf(trace->seq, "%9d ", + trace_seq_printf(trace->seq, "%9llu ", sum.user_count); trace_seq_printf(trace->seq, "\n"); -- cgit v1.2.3 From db089c9158c1d535a36dfc010e5db37fccea2561 Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Thu, 10 Oct 2024 14:17:30 -0700 Subject: libbpf: never interpret subprogs in .text as entry programs Libbpf pre-1.0 had a legacy logic of allowing singular non-annotated (i.e., not having explicit SEC() annotation) function to be treated as sole entry BPF program (unless there were other explicit entry programs). This behavior was dropped during libbpf 1.0 transition period (unless LIBBPF_STRICT_SEC_NAME flag was unset in libbpf_mode). When 1.0 was released and all the legacy behavior was removed, the bug slipped through leaving this legacy behavior around. Fix this for good, as it actually causes very confusing behavior if BPF object file only has subprograms, but no entry programs. Fixes: bd054102a8c7 ("libbpf: enforce strict libbpf 1.0 behaviors") Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241010211731.4121837-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/libbpf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 05ad264ff09b..7c40286c3948 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -4417,7 +4417,7 @@ static int bpf_object__collect_externs(struct bpf_object *obj) static bool prog_is_subprog(const struct bpf_object *obj, const struct bpf_program *prog) { - return prog->sec_idx == obj->efile.text_shndx && obj->nr_programs > 1; + return prog->sec_idx == obj->efile.text_shndx; } struct bpf_program * -- cgit v1.2.3 From 82370ed5ade58d99484a607a6000fc8333921c63 Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Thu, 10 Oct 2024 14:17:31 -0700 Subject: selftests/bpf: add subprog to BPF object file with no entry programs Add a subprogram to BPF object file that otherwise has no entry BPF programs to validate that libbpf can still load this correctly. Until this was fixed, user could expect this very confusing error message: libbpf: prog 'dangling_subprog': missing BPF prog type, check ELF section name '.text' libbpf: prog 'dangling_subprog': failed to load: -22 libbpf: failed to load object 'struct_ops_detach' libbpf: failed to load BPF skeleton 'struct_ops_detach': -22 Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241010211731.4121837-2-andrii@kernel.org Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/progs/struct_ops_detach.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/struct_ops_detach.c b/tools/testing/selftests/bpf/progs/struct_ops_detach.c index 56b787a89876..d7fdcabe7d90 100644 --- a/tools/testing/selftests/bpf/progs/struct_ops_detach.c +++ b/tools/testing/selftests/bpf/progs/struct_ops_detach.c @@ -6,5 +6,17 @@ char _license[] SEC("license") = "GPL"; +/* + * This subprogram validates that libbpf handles the situation in which BPF + * object has subprograms in .text section, but has no entry BPF programs. + * At some point that was causing issues due to legacy logic of treating such + * subprogram as entry program (with unknown program type, which would fail). + */ +int dangling_subprog(void) +{ + /* do nothing, just be here */ + return 0; +} + SEC(".struct_ops.link") struct bpf_testmod_ops testmod_do_detach; -- cgit v1.2.3 From e6c209da7e0e9aaf955a7b59e91ed78c2b6c96fb Mon Sep 17 00:00:00 2001 From: Ihor Solodrai Date: Fri, 11 Oct 2024 15:31:07 +0000 Subject: selftests/bpf: Check for timeout in perf_link test Recently perf_link test started unreliably failing on libbpf CI: * https://github.com/libbpf/libbpf/actions/runs/11260672407/job/31312405473 * https://github.com/libbpf/libbpf/actions/runs/11260992334/job/31315514626 * https://github.com/libbpf/libbpf/actions/runs/11263162459/job/31320458251 Part of the test is running a dummy loop for a while and then checking for a counter incremented by the test program. Instead of waiting for an arbitrary number of loop iterations once, check for the test counter in a loop and use get_time_ns() helper to enforce a 100ms timeout. v1: https://lore.kernel.org/bpf/zuRd072x9tumn2iN4wDNs5av0nu5nekMNV4PkR-YwCT10eFFTrUtZBRkLWFbrcCe7guvLStGQlhibo8qWojCO7i2-NGajes5GYIyynexD-w=@pm.me/ Signed-off-by: Ihor Solodrai Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241011153104.249800-1-ihor.solodrai@pm.me --- tools/testing/selftests/bpf/prog_tests/perf_link.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/perf_link.c b/tools/testing/selftests/bpf/prog_tests/perf_link.c index 3a25f1c743a1..d940ff87fa08 100644 --- a/tools/testing/selftests/bpf/prog_tests/perf_link.c +++ b/tools/testing/selftests/bpf/prog_tests/perf_link.c @@ -4,8 +4,12 @@ #include #include #include +#include "testing_helpers.h" #include "test_perf_link.skel.h" +#define BURN_TIMEOUT_MS 100 +#define BURN_TIMEOUT_NS BURN_TIMEOUT_MS * 1000000 + static void burn_cpu(void) { volatile int j = 0; @@ -32,6 +36,7 @@ void serial_test_perf_link(void) int run_cnt_before, run_cnt_after; struct bpf_link_info info; __u32 info_len = sizeof(info); + __u64 timeout_time_ns; /* create perf event */ memset(&attr, 0, sizeof(attr)); @@ -63,8 +68,14 @@ void serial_test_perf_link(void) ASSERT_GT(info.prog_id, 0, "link_prog_id"); /* ensure we get at least one perf_event prog execution */ - burn_cpu(); - ASSERT_GT(skel->bss->run_cnt, 0, "run_cnt"); + timeout_time_ns = get_time_ns() + BURN_TIMEOUT_NS; + while (true) { + burn_cpu(); + if (skel->bss->run_cnt > 0) + break; + if (!ASSERT_LT(get_time_ns(), timeout_time_ns, "run_cnt_timeout")) + break; + } /* perf_event is still active, but we close link and BPF program * shouldn't be executed anymore -- cgit v1.2.3 From 989a29cfed9b5092c3e18be14e9032c51bb1c9f6 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 11 Oct 2024 10:00:21 -0700 Subject: libbpf: Fix possible compiler warnings in hashmap The hashmap__for_each_entry[_safe] is accessing 'map' as a pointer. But it does without parentheses so passing a static hash map with an ampersand (like '&slab_hash') will cause compiler warnings due to unmatched types as '->' operator has a higher precedence. Signed-off-by: Namhyung Kim Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241011170021.1490836-1-namhyung@kernel.org --- tools/lib/bpf/hashmap.h | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/hashmap.h b/tools/lib/bpf/hashmap.h index c12f8320e668..0c4f155e8eb7 100644 --- a/tools/lib/bpf/hashmap.h +++ b/tools/lib/bpf/hashmap.h @@ -166,8 +166,8 @@ bool hashmap_find(const struct hashmap *map, long key, long *value); * @bkt: integer used as a bucket loop cursor */ #define hashmap__for_each_entry(map, cur, bkt) \ - for (bkt = 0; bkt < map->cap; bkt++) \ - for (cur = map->buckets[bkt]; cur; cur = cur->next) + for (bkt = 0; bkt < (map)->cap; bkt++) \ + for (cur = (map)->buckets[bkt]; cur; cur = cur->next) /* * hashmap__for_each_entry_safe - iterate over all entries in hashmap, safe @@ -178,8 +178,8 @@ bool hashmap_find(const struct hashmap *map, long key, long *value); * @bkt: integer used as a bucket loop cursor */ #define hashmap__for_each_entry_safe(map, cur, tmp, bkt) \ - for (bkt = 0; bkt < map->cap; bkt++) \ - for (cur = map->buckets[bkt]; \ + for (bkt = 0; bkt < (map)->cap; bkt++) \ + for (cur = (map)->buckets[bkt]; \ cur && ({tmp = cur->next; true; }); \ cur = tmp) @@ -190,19 +190,19 @@ bool hashmap_find(const struct hashmap *map, long key, long *value); * @key: key to iterate entries for */ #define hashmap__for_each_key_entry(map, cur, _key) \ - for (cur = map->buckets \ - ? map->buckets[hash_bits(map->hash_fn((_key), map->ctx), map->cap_bits)] \ + for (cur = (map)->buckets \ + ? (map)->buckets[hash_bits((map)->hash_fn((_key), (map)->ctx), (map)->cap_bits)] \ : NULL; \ cur; \ cur = cur->next) \ - if (map->equal_fn(cur->key, (_key), map->ctx)) + if ((map)->equal_fn(cur->key, (_key), (map)->ctx)) #define hashmap__for_each_key_entry_safe(map, cur, tmp, _key) \ - for (cur = map->buckets \ - ? map->buckets[hash_bits(map->hash_fn((_key), map->ctx), map->cap_bits)] \ + for (cur = (map)->buckets \ + ? (map)->buckets[hash_bits((map)->hash_fn((_key), (map)->ctx), (map)->cap_bits)] \ : NULL; \ cur && ({ tmp = cur->next; true; }); \ cur = tmp) \ - if (map->equal_fn(cur->key, (_key), map->ctx)) + if ((map)->equal_fn(cur->key, (_key), (map)->ctx)) #endif /* __LIBBPF_HASHMAP_H */ -- cgit v1.2.3 From 3ec920bb978ccdc68a7dfb304d303d598d038cb1 Mon Sep 17 00:00:00 2001 From: Hangbin Liu Date: Thu, 10 Oct 2024 04:00:27 +0000 Subject: selftests: rtnetlink: update netdevsim ipsec output format After the netdevsim update to use human-readable IP address formats for IPsec, we can now use the source and destination IPs directly in testing. Here is the result: # ./rtnetlink.sh -t kci_test_ipsec_offload PASS: ipsec_offload Signed-off-by: Hangbin Liu Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20241010040027.21440-4-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/rtnetlink.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh index bdf6f10d0558..87dce3efe31e 100755 --- a/tools/testing/selftests/net/rtnetlink.sh +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -809,10 +809,10 @@ kci_test_ipsec_offload() # does driver have correct offload info run_cmd diff $sysfsf - << EOF SA count=2 tx=3 -sa[0] tx ipaddr=0x00000000 00000000 00000000 00000000 +sa[0] tx ipaddr=$dstip sa[0] spi=0x00000009 proto=0x32 salt=0x61626364 crypt=1 sa[0] key=0x34333231 38373635 32313039 36353433 -sa[1] rx ipaddr=0x00000000 00000000 00000000 037ba8c0 +sa[1] rx ipaddr=$srcip sa[1] spi=0x00000009 proto=0x32 salt=0x61626364 crypt=1 sa[1] key=0x34333231 38373635 32313039 36353433 EOF -- cgit v1.2.3 From ec35b0c53cc7398143315d42342a9798094dada7 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 10 Oct 2024 14:18:57 -0700 Subject: selftests: drv-net: add missing trailing backslash Commit b3ea416419c8 ("testing: net-drv: add basic shaper test") removed the trailing backslash from the last entry. We have a terminating comment here to avoid having to modify the last line when adding at the end. Reviewed-by: Joe Damato Reviewed-by: Donald Hunter Link: https://patch.msgid.link/20241010211857.2193076-1-kuba@kernel.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile index 25aec5c081df..0fec8f9801ad 100644 --- a/tools/testing/selftests/drivers/net/Makefile +++ b/tools/testing/selftests/drivers/net/Makefile @@ -9,7 +9,7 @@ TEST_PROGS := \ ping.py \ queues.py \ stats.py \ - shaper.py + shaper.py \ # end of TEST_PROGS include ../../lib.mk -- cgit v1.2.3 From 96ea65295337fed271ce9f136edf6f7eaf3b657c Mon Sep 17 00:00:00 2001 From: Ba Jing Date: Tue, 3 Sep 2024 12:16:20 +0800 Subject: binderfs: binderfs_test: remove unused variable The variable "wret" is never referenced in the code, just remove it. Signed-off-by: Ba Jing Link: https://lore.kernel.org/r/20240903041620.10812-1-bajing@cmss.chinamobile.com Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/filesystems/binderfs/binderfs_test.c | 1 - 1 file changed, 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/filesystems/binderfs/binderfs_test.c b/tools/testing/selftests/filesystems/binderfs/binderfs_test.c index 319567f0fae1..81db85a5cc16 100644 --- a/tools/testing/selftests/filesystems/binderfs/binderfs_test.c +++ b/tools/testing/selftests/filesystems/binderfs/binderfs_test.c @@ -57,7 +57,6 @@ static int __do_binderfs_test(struct __test_metadata *_metadata) { int fd, ret, saved_errno, result = 1; size_t len; - ssize_t wret; struct binderfs_device device = { 0 }; struct binder_version version = { 0 }; char binderfs_mntpt[] = P_tmpdir "/binderfs_XXXXXX", -- cgit v1.2.3 From e94fdd5d9aa263ec259e0bc1ae53b89829c09aad Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Mon, 14 Oct 2024 11:40:59 +0200 Subject: selftests: use shared header So that we don't have to redefine the same system calls over and over. Link: https://lore.kernel.org/r/20241014-work-overlayfs-v3-4-32b3fed1286e@kernel.org Reviewed-by: Amir Goldstein Signed-off-by: Christian Brauner --- .../selftests/filesystems/overlayfs/dev_in_maps.c | 27 +------------- .../selftests/filesystems/overlayfs/wrappers.h | 43 ++++++++++++++++++++++ 2 files changed, 44 insertions(+), 26 deletions(-) create mode 100644 tools/testing/selftests/filesystems/overlayfs/wrappers.h (limited to 'tools') diff --git a/tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c b/tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c index 2862aae58b79..3b796264223f 100644 --- a/tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c +++ b/tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c @@ -17,32 +17,7 @@ #include "../../kselftest.h" #include "log.h" - -static int sys_fsopen(const char *fsname, unsigned int flags) -{ - return syscall(__NR_fsopen, fsname, flags); -} - -static int sys_fsconfig(int fd, unsigned int cmd, const char *key, const char *value, int aux) -{ - return syscall(__NR_fsconfig, fd, cmd, key, value, aux); -} - -static int sys_fsmount(int fd, unsigned int flags, unsigned int attr_flags) -{ - return syscall(__NR_fsmount, fd, flags, attr_flags); -} -static int sys_mount(const char *src, const char *tgt, const char *fst, - unsigned long flags, const void *data) -{ - return syscall(__NR_mount, src, tgt, fst, flags, data); -} -static int sys_move_mount(int from_dfd, const char *from_pathname, - int to_dfd, const char *to_pathname, - unsigned int flags) -{ - return syscall(__NR_move_mount, from_dfd, from_pathname, to_dfd, to_pathname, flags); -} +#include "wrappers.h" static long get_file_dev_and_inode(void *addr, struct statx *stx) { diff --git a/tools/testing/selftests/filesystems/overlayfs/wrappers.h b/tools/testing/selftests/filesystems/overlayfs/wrappers.h new file mode 100644 index 000000000000..4f99e10f7f01 --- /dev/null +++ b/tools/testing/selftests/filesystems/overlayfs/wrappers.h @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +// +#ifndef __SELFTEST_OVERLAYFS_WRAPPERS_H__ +#define __SELFTEST_OVERLAYFS_WRAPPERS_H__ + +#define _GNU_SOURCE + +#include +#include +#include + +static inline int sys_fsopen(const char *fsname, unsigned int flags) +{ + return syscall(__NR_fsopen, fsname, flags); +} + +static inline int sys_fsconfig(int fd, unsigned int cmd, const char *key, + const char *value, int aux) +{ + return syscall(__NR_fsconfig, fd, cmd, key, value, aux); +} + +static inline int sys_fsmount(int fd, unsigned int flags, + unsigned int attr_flags) +{ + return syscall(__NR_fsmount, fd, flags, attr_flags); +} + +static inline int sys_mount(const char *src, const char *tgt, const char *fst, + unsigned long flags, const void *data) +{ + return syscall(__NR_mount, src, tgt, fst, flags, data); +} + +static inline int sys_move_mount(int from_dfd, const char *from_pathname, + int to_dfd, const char *to_pathname, + unsigned int flags) +{ + return syscall(__NR_move_mount, from_dfd, from_pathname, to_dfd, + to_pathname, flags); +} + +#endif -- cgit v1.2.3 From af9199145b1977316b3c752e2124543e320f087f Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Mon, 14 Oct 2024 11:41:00 +0200 Subject: selftests: add overlayfs fd mounting selftests Link: https://lore.kernel.org/r/20241014-work-overlayfs-v3-5-32b3fed1286e@kernel.org Reviewed-by: Amir Goldstein Signed-off-by: Christian Brauner --- .../selftests/filesystems/overlayfs/.gitignore | 1 + .../selftests/filesystems/overlayfs/Makefile | 2 +- .../filesystems/overlayfs/set_layers_via_fds.c | 152 +++++++++++++++++++++ .../selftests/filesystems/overlayfs/wrappers.h | 4 + 4 files changed, 158 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/filesystems/overlayfs/set_layers_via_fds.c (limited to 'tools') diff --git a/tools/testing/selftests/filesystems/overlayfs/.gitignore b/tools/testing/selftests/filesystems/overlayfs/.gitignore index 52ae618fdd98..e23a18c8b37f 100644 --- a/tools/testing/selftests/filesystems/overlayfs/.gitignore +++ b/tools/testing/selftests/filesystems/overlayfs/.gitignore @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only dev_in_maps +set_layers_via_fds diff --git a/tools/testing/selftests/filesystems/overlayfs/Makefile b/tools/testing/selftests/filesystems/overlayfs/Makefile index 56b2b48a765b..e8d1adb021af 100644 --- a/tools/testing/selftests/filesystems/overlayfs/Makefile +++ b/tools/testing/selftests/filesystems/overlayfs/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 -TEST_GEN_PROGS := dev_in_maps +TEST_GEN_PROGS := dev_in_maps set_layers_via_fds CFLAGS := -Wall -Werror diff --git a/tools/testing/selftests/filesystems/overlayfs/set_layers_via_fds.c b/tools/testing/selftests/filesystems/overlayfs/set_layers_via_fds.c new file mode 100644 index 000000000000..301fb5c02852 --- /dev/null +++ b/tools/testing/selftests/filesystems/overlayfs/set_layers_via_fds.c @@ -0,0 +1,152 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#define __SANE_USERSPACE_TYPES__ // Use ll64 + +#include +#include +#include +#include +#include +#include +#include + +#include "../../kselftest_harness.h" +#include "log.h" +#include "wrappers.h" + +FIXTURE(set_layers_via_fds) { +}; + +FIXTURE_SETUP(set_layers_via_fds) +{ + ASSERT_EQ(mkdir("/set_layers_via_fds", 0755), 0); +} + +FIXTURE_TEARDOWN(set_layers_via_fds) +{ + umount2("/set_layers_via_fds", 0); + ASSERT_EQ(rmdir("/set_layers_via_fds"), 0); +} + +TEST_F(set_layers_via_fds, set_layers_via_fds) +{ + int fd_context, fd_tmpfs, fd_overlay; + int layer_fds[] = { [0 ... 8] = -EBADF }; + bool layers_found[] = { [0 ... 8] = false }; + size_t len = 0; + char *line = NULL; + FILE *f_mountinfo; + + ASSERT_EQ(unshare(CLONE_NEWNS), 0); + ASSERT_EQ(sys_mount(NULL, "/", NULL, MS_SLAVE | MS_REC, NULL), 0); + + fd_context = sys_fsopen("tmpfs", 0); + ASSERT_GE(fd_context, 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_CMD_CREATE, NULL, NULL, 0), 0); + fd_tmpfs = sys_fsmount(fd_context, 0, 0); + ASSERT_GE(fd_tmpfs, 0); + ASSERT_EQ(close(fd_context), 0); + + ASSERT_EQ(mkdirat(fd_tmpfs, "w", 0755), 0); + ASSERT_EQ(mkdirat(fd_tmpfs, "u", 0755), 0); + ASSERT_EQ(mkdirat(fd_tmpfs, "l1", 0755), 0); + ASSERT_EQ(mkdirat(fd_tmpfs, "l2", 0755), 0); + ASSERT_EQ(mkdirat(fd_tmpfs, "l3", 0755), 0); + ASSERT_EQ(mkdirat(fd_tmpfs, "l4", 0755), 0); + ASSERT_EQ(mkdirat(fd_tmpfs, "d1", 0755), 0); + ASSERT_EQ(mkdirat(fd_tmpfs, "d2", 0755), 0); + ASSERT_EQ(mkdirat(fd_tmpfs, "d3", 0755), 0); + + layer_fds[0] = openat(fd_tmpfs, "w", O_DIRECTORY); + ASSERT_GE(layer_fds[0], 0); + + layer_fds[1] = openat(fd_tmpfs, "u", O_DIRECTORY); + ASSERT_GE(layer_fds[1], 0); + + layer_fds[2] = openat(fd_tmpfs, "l1", O_DIRECTORY); + ASSERT_GE(layer_fds[2], 0); + + layer_fds[3] = openat(fd_tmpfs, "l2", O_DIRECTORY); + ASSERT_GE(layer_fds[3], 0); + + layer_fds[4] = openat(fd_tmpfs, "l3", O_DIRECTORY); + ASSERT_GE(layer_fds[4], 0); + + layer_fds[5] = openat(fd_tmpfs, "l4", O_DIRECTORY); + ASSERT_GE(layer_fds[5], 0); + + layer_fds[6] = openat(fd_tmpfs, "d1", O_DIRECTORY); + ASSERT_GE(layer_fds[6], 0); + + layer_fds[7] = openat(fd_tmpfs, "d2", O_DIRECTORY); + ASSERT_GE(layer_fds[7], 0); + + layer_fds[8] = openat(fd_tmpfs, "d3", O_DIRECTORY); + ASSERT_GE(layer_fds[8], 0); + + ASSERT_EQ(sys_move_mount(fd_tmpfs, "", -EBADF, "/tmp", MOVE_MOUNT_F_EMPTY_PATH), 0); + ASSERT_EQ(close(fd_tmpfs), 0); + + fd_context = sys_fsopen("overlay", 0); + ASSERT_GE(fd_context, 0); + + ASSERT_NE(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "lowerdir", NULL, layer_fds[2]), 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "workdir", NULL, layer_fds[0]), 0); + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "upperdir", NULL, layer_fds[1]), 0); + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "lowerdir+", NULL, layer_fds[2]), 0); + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "lowerdir+", NULL, layer_fds[3]), 0); + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "lowerdir+", NULL, layer_fds[4]), 0); + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "lowerdir+", NULL, layer_fds[5]), 0); + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "datadir+", NULL, layer_fds[6]), 0); + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "datadir+", NULL, layer_fds[7]), 0); + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "datadir+", NULL, layer_fds[8]), 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_STRING, "metacopy", "on", 0), 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_CMD_CREATE, NULL, NULL, 0), 0); + + fd_overlay = sys_fsmount(fd_context, 0, 0); + ASSERT_GE(fd_overlay, 0); + + ASSERT_EQ(sys_move_mount(fd_overlay, "", -EBADF, "/set_layers_via_fds", MOVE_MOUNT_F_EMPTY_PATH), 0); + + f_mountinfo = fopen("/proc/self/mountinfo", "r"); + ASSERT_NE(f_mountinfo, NULL); + + while (getline(&line, &len, f_mountinfo) != -1) { + char *haystack = line; + + if (strstr(haystack, "workdir=/tmp/w")) + layers_found[0] = true; + if (strstr(haystack, "upperdir=/tmp/u")) + layers_found[1] = true; + if (strstr(haystack, "lowerdir+=/tmp/l1")) + layers_found[2] = true; + if (strstr(haystack, "lowerdir+=/tmp/l2")) + layers_found[3] = true; + if (strstr(haystack, "lowerdir+=/tmp/l3")) + layers_found[4] = true; + if (strstr(haystack, "lowerdir+=/tmp/l4")) + layers_found[5] = true; + if (strstr(haystack, "datadir+=/tmp/d1")) + layers_found[6] = true; + if (strstr(haystack, "datadir+=/tmp/d2")) + layers_found[7] = true; + if (strstr(haystack, "datadir+=/tmp/d3")) + layers_found[8] = true; + } + free(line); + + for (int i = 0; i < ARRAY_SIZE(layer_fds); i++) { + ASSERT_EQ(layers_found[i], true); + ASSERT_EQ(close(layer_fds[i]), 0); + } + + ASSERT_EQ(close(fd_context), 0); + ASSERT_EQ(close(fd_overlay), 0); + ASSERT_EQ(fclose(f_mountinfo), 0); +} + +TEST_HARNESS_MAIN diff --git a/tools/testing/selftests/filesystems/overlayfs/wrappers.h b/tools/testing/selftests/filesystems/overlayfs/wrappers.h index 4f99e10f7f01..071b95fd2ac0 100644 --- a/tools/testing/selftests/filesystems/overlayfs/wrappers.h +++ b/tools/testing/selftests/filesystems/overlayfs/wrappers.h @@ -32,6 +32,10 @@ static inline int sys_mount(const char *src, const char *tgt, const char *fst, return syscall(__NR_mount, src, tgt, fst, flags, data); } +#ifndef MOVE_MOUNT_F_EMPTY_PATH +#define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */ +#endif + static inline int sys_move_mount(int from_dfd, const char *from_pathname, int to_dfd, const char *to_pathname, unsigned int flags) -- cgit v1.2.3 From d94d86cee1032bbf429d5bd0914b064e03b56f0e Mon Sep 17 00:00:00 2001 From: Athira Rajeev Date: Sun, 13 Oct 2024 23:07:42 +0530 Subject: tools/perf/tests: Fix compilation error with strncpy in tests/tool_pmu MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit perf fails to compile on systems with GCC version11 as below: In file included from /usr/include/string.h:519, from /home/athir/perf-tools-next/tools/include/linux/bitmap.h:5, from /home/athir/perf-tools-next/tools/perf/util/pmu.h:5, from /home/athir/perf-tools-next/tools/perf/util/evsel.h:14, from /home/athir/perf-tools-next/tools/perf/util/evlist.h:14, from tests/tool_pmu.c:3: In function ‘strncpy’, inlined from ‘do_test’ at tests/tool_pmu.c:25:3: /usr/include/bits/string_fortified.h:95:10: error: ‘__builtin_strncpy’ specified bound 128 equals destination size [-Werror=stringop-truncation] 95 | return __builtin___strncpy_chk (__dest, __src, __len, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 96 | __glibc_objsize (__dest)); | ~~~~~~~~~~~~~~~~~~~~~~~~~ The compile error is from strncpy refernce in do_test: strncpy(str, tool_pmu__event_to_str(ev), sizeof(str)); This behaviour is not observed with GCC version 8, but observed with GCC version 11 . This is message from gcc for detecting truncation while using strncpu. Use snprintf instead of strncpy here to be safe. Signed-off-by: Athira Rajeev Cc: akanksha@linux.ibm.com Cc: hbathini@linux.ibm.com Cc: kjain@linux.ibm.com Cc: maddy@linux.ibm.com Cc: disgoel@linux.vnet.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20241013173742.71882-1-atrajeev@linux.vnet.ibm.com Signed-off-by: Namhyung Kim --- tools/perf/tests/tool_pmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/tool_pmu.c b/tools/perf/tests/tool_pmu.c index 94d0dd8fd3cb..297cc8c55579 100644 --- a/tools/perf/tests/tool_pmu.c +++ b/tools/perf/tests/tool_pmu.c @@ -22,7 +22,7 @@ static int do_test(enum tool_pmu_event ev, bool with_pmu) if (with_pmu) snprintf(str, sizeof(str), "tool/%s/", tool_pmu__event_to_str(ev)); else - strncpy(str, tool_pmu__event_to_str(ev), sizeof(str)); + snprintf(str, sizeof(str), "%s", tool_pmu__event_to_str(ev)); parse_events_error__init(&err); ret = parse_events(evlist, str, &err); -- cgit v1.2.3 From 9ea671d1b2d5962368b94b28507ae65f94c86fb3 Mon Sep 17 00:00:00 2001 From: Athira Rajeev Date: Sun, 13 Oct 2024 22:37:32 +0530 Subject: tools/perf/tests: Remove duplicate evlist__delete in tests/tool_pmu.c The testcase for tool_pmu failed in powerpc as below: ./perf test -v "Parsing without PMU name" 8: Tool PMU : 8.1: Parsing without PMU name : FAILED! This happens when parse_events results in either skip or fail of an event. Because the code invokes evlist__delete(evlist) and "goto out". ret = parse_events(evlist, str, &err); if (ret) { evlist__delete(evlist); But in the "out" section also evlist__delete happens. out: evlist__delete(evlist); return ret; Hence remove the duplicate evlist__delete from the first path in the testcase With the change: # ./perf test -v "Parsing without PMU name" 8: Tool PMU : 8.1: Parsing without PMU name : Ok Signed-off-by: Athira Rajeev Cc: akanksha@linux.ibm.com Cc: hbathini@linux.ibm.com Cc: kjain@linux.ibm.com Cc: maddy@linux.ibm.com Cc: disgoel@linux.vnet.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20241013170732.71339-1-atrajeev@linux.vnet.ibm.com Signed-off-by: Namhyung Kim --- tools/perf/tests/tool_pmu.c | 1 - 1 file changed, 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/tool_pmu.c b/tools/perf/tests/tool_pmu.c index 297cc8c55579..46896b485abf 100644 --- a/tools/perf/tests/tool_pmu.c +++ b/tools/perf/tests/tool_pmu.c @@ -27,7 +27,6 @@ static int do_test(enum tool_pmu_event ev, bool with_pmu) parse_events_error__init(&err); ret = parse_events(evlist, str, &err); if (ret) { - evlist__delete(evlist); if (tool_pmu__skip_event(tool_pmu__event_to_str(ev))) { ret = TEST_OK; goto out; -- cgit v1.2.3 From 1a3d6a9723d4dbdad41dad67b66a64d4a84c5f5c Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 14 Oct 2024 10:34:17 -0700 Subject: perf tools: Fix compiler error in util/tool_pmu.c util/tool_pmu.c: In function 'evsel__tool_pmu_read': util/tool_pmu.c:419:55: error: passing argument 2 of 'tool_pmu__read_event' from incompatible pointer type [-Werror=incompatible-pointer-types] 419 | if (!tool_pmu__read_event(ev, &val)) { | ^~~~ | | | long unsigned int * util/tool_pmu.c:335:56: note: expected 'u64 *' {aka 'long long unsigned int *'} but argument is of type 'long unsigned int *' 335 | bool tool_pmu__read_event(enum tool_pmu_event ev, u64 *result) | ~~~~~^~~~~~ Link: https://lore.kernel.org/r/Zw1XIGML32VaxE0t@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/tool_pmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c index ea9d50f02520..bd1cee643eb5 100644 --- a/tools/perf/util/tool_pmu.c +++ b/tools/perf/util/tool_pmu.c @@ -394,7 +394,7 @@ bool tool_pmu__read_event(enum tool_pmu_event ev, u64 *result) int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread) { __u64 *start_time, cur_time, delta_start; - unsigned long val; + u64 val; int fd, err = 0; struct perf_counts_values *count, *old_count = NULL; bool adjust = false; -- cgit v1.2.3 From 04042674b21a8dfa143abacf7b1ef5b25a58d86e Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 9 Oct 2024 13:20:08 -0700 Subject: perf tools: Fix possible compiler warnings in hashmap MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The hashmap__for_each_entry[_safe] is accessing 'map' as if it's a pointer. But it does without parentheses so passing a static hash map with an ampersand (like &slab_hash below) caused compiler warnings due to unmatched types. In file included from util/bpf_lock_contention.c:5: util/bpf_lock_contention.c: In function ‘exit_slab_cache_iter’: linux/tools/perf/util/hashmap.h:169:32: error: invalid type argument of ‘->’ (have ‘struct hashmap’) 169 | for (bkt = 0; bkt < map->cap; bkt++) \ | ^~ util/bpf_lock_contention.c:105:9: note: in expansion of macro ‘hashmap__for_each_entry’ 105 | hashmap__for_each_entry(&slab_hash, cur, bkt) | ^~~~~~~~~~~~~~~~~~~~~~~ /home/namhyung/project/linux/tools/perf/util/hashmap.h:170:31: error: invalid type argument of ‘->’ (have ‘struct hashmap’) 170 | for (cur = map->buckets[bkt]; cur; cur = cur->next) | ^~ util/bpf_lock_contention.c:105:9: note: in expansion of macro ‘hashmap__for_each_entry’ 105 | hashmap__for_each_entry(&slab_hash, cur, bkt) | ^~~~~~~~~~~~~~~~~~~~~~~ Cc: bpf@vger.kernel.org Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241009202009.884884-1-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/util/hashmap.h | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/hashmap.h b/tools/perf/util/hashmap.h index c12f8320e668..0c4f155e8eb7 100644 --- a/tools/perf/util/hashmap.h +++ b/tools/perf/util/hashmap.h @@ -166,8 +166,8 @@ bool hashmap_find(const struct hashmap *map, long key, long *value); * @bkt: integer used as a bucket loop cursor */ #define hashmap__for_each_entry(map, cur, bkt) \ - for (bkt = 0; bkt < map->cap; bkt++) \ - for (cur = map->buckets[bkt]; cur; cur = cur->next) + for (bkt = 0; bkt < (map)->cap; bkt++) \ + for (cur = (map)->buckets[bkt]; cur; cur = cur->next) /* * hashmap__for_each_entry_safe - iterate over all entries in hashmap, safe @@ -178,8 +178,8 @@ bool hashmap_find(const struct hashmap *map, long key, long *value); * @bkt: integer used as a bucket loop cursor */ #define hashmap__for_each_entry_safe(map, cur, tmp, bkt) \ - for (bkt = 0; bkt < map->cap; bkt++) \ - for (cur = map->buckets[bkt]; \ + for (bkt = 0; bkt < (map)->cap; bkt++) \ + for (cur = (map)->buckets[bkt]; \ cur && ({tmp = cur->next; true; }); \ cur = tmp) @@ -190,19 +190,19 @@ bool hashmap_find(const struct hashmap *map, long key, long *value); * @key: key to iterate entries for */ #define hashmap__for_each_key_entry(map, cur, _key) \ - for (cur = map->buckets \ - ? map->buckets[hash_bits(map->hash_fn((_key), map->ctx), map->cap_bits)] \ + for (cur = (map)->buckets \ + ? (map)->buckets[hash_bits((map)->hash_fn((_key), (map)->ctx), (map)->cap_bits)] \ : NULL; \ cur; \ cur = cur->next) \ - if (map->equal_fn(cur->key, (_key), map->ctx)) + if ((map)->equal_fn(cur->key, (_key), (map)->ctx)) #define hashmap__for_each_key_entry_safe(map, cur, tmp, _key) \ - for (cur = map->buckets \ - ? map->buckets[hash_bits(map->hash_fn((_key), map->ctx), map->cap_bits)] \ + for (cur = (map)->buckets \ + ? (map)->buckets[hash_bits((map)->hash_fn((_key), (map)->ctx), (map)->cap_bits)] \ : NULL; \ cur && ({ tmp = cur->next; true; }); \ cur = tmp) \ - if (map->equal_fn(cur->key, (_key), map->ctx)) + if ((map)->equal_fn(cur->key, (_key), (map)->ctx)) #endif /* __LIBBPF_HASHMAP_H */ -- cgit v1.2.3 From af3902bfc1b60941681a0db9db95d8fe3d5c785d Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 9 Oct 2024 13:20:09 -0700 Subject: perf tools: Remove unnecessary parentheses The hashmap API used to require parentheses for the hashmap argument if it's not a pointer type. It's now fixed so let's drop the parentheses. Link: https://lore.kernel.org/r/20241009202009.884884-2-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/util/threads.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/threads.c b/tools/perf/util/threads.c index ff2b169e0085..6ca0b178fb6c 100644 --- a/tools/perf/util/threads.c +++ b/tools/perf/util/threads.c @@ -141,7 +141,7 @@ void threads__remove_all_threads(struct threads *threads) down_write(&table->lock); __threads_table_entry__set_last_match(table, NULL); - hashmap__for_each_entry_safe((&table->shard), cur, tmp, bkt) { + hashmap__for_each_entry_safe(&table->shard, cur, tmp, bkt) { struct thread *old_value; hashmap__delete(&table->shard, cur->key, /*old_key=*/NULL, &old_value); @@ -175,7 +175,7 @@ int threads__for_each_thread(struct threads *threads, size_t bkt; down_read(&table->lock); - hashmap__for_each_entry((&table->shard), cur, bkt) { + hashmap__for_each_entry(&table->shard, cur, bkt) { int rc = fn((struct thread *)cur->pvalue, data); if (rc != 0) { -- cgit v1.2.3 From cd912ab3b65445df7b95bbdd06ac29f823d4df98 Mon Sep 17 00:00:00 2001 From: Madadi Vineeth Reddy Date: Fri, 4 Oct 2024 22:37:56 +0530 Subject: perf sched timehist: Add pre-migration wait time option pre-migration wait time is the time that a task unnecessarily spends on the runqueue of a CPU but doesn't get switched-in there. In terms of tracepoints, it is the time between sched:sched_wakeup and sched:sched_migrate_task. Let's say a task woke up on CPU2, then it got migrated to CPU4 and then it's switched-in to CPU4. So, here pre-migration wait time is time that it was waiting on runqueue of CPU2 after it is woken up. The general pattern for pre-migration to occur is: sched:sched_wakeup sched:sched_migrate_task sched:sched_switch The sched:sched_waking event is used to capture the wakeup time, as it aligns with the existing code and only introduces a negligible time difference. pre-migrations are generally not useful and it increases migrations. This metric would be helpful in testing patches mainly related to wakeup and load-balancer code paths as better wakeup logic would choose an optimal CPU where task would be switched-in and thereby reducing pre- migrations. The sample output(s) when -P or --pre-migrations is used: ================= time cpu task name wait time sch delay run time pre-mig time [tid/pid] (msec) (msec) (msec) (msec) --------------- ------ ------------------------------ --------- --------- --------- --------- 38456.720806 [0001] schbench[28634/28574] 4.917 4.768 1.004 0.000 38456.720810 [0001] rcu_preempt[18] 3.919 0.003 0.004 0.000 38456.721800 [0006] schbench[28779/28574] 23.465 23.465 1.999 0.000 38456.722800 [0002] schbench[28773/28574] 60.371 60.237 3.955 60.197 38456.722806 [0001] schbench[28634/28574] 0.004 0.004 1.996 0.000 38456.722811 [0001] rcu_preempt[18] 1.996 0.005 0.005 0.000 38456.723800 [0000] schbench[28833/28574] 4.000 4.000 3.999 0.000 38456.723800 [0004] schbench[28762/28574] 42.951 42.839 3.999 39.867 38456.723802 [0007] schbench[28812/28574] 43.947 43.817 3.999 40.866 38456.723804 [0001] schbench[28587/28574] 7.935 7.822 0.993 0.000 Signed-off-by: Madadi Vineeth Reddy Reviewed-by: Tim Chen Link: https://lore.kernel.org/r/20241004170756.18064-1-vineethr@linux.ibm.com Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-sched.txt | 8 +++ tools/perf/builtin-sched.c | 98 ++++++++++++++++++++------------- 2 files changed, 67 insertions(+), 39 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt index 3db64954a267..6dbbddb6464d 100644 --- a/tools/perf/Documentation/perf-sched.txt +++ b/tools/perf/Documentation/perf-sched.txt @@ -221,6 +221,14 @@ OPTIONS for 'perf sched timehist' priorities are specified with -: 120-129. A combination of both can also be provided: 0,120-129. +-P:: +--pre-migrations:: + Show pre-migration wait time. pre-migration wait time is the time spent + by a task waiting on a runqueue but not getting the chance to run there + and is migrated to a different runqueue where it is finally run. This + time between sched_wakeup and migrate_task is the pre-migration wait + time. + OPTIONS for 'perf sched replay' ------------------------------ diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index fdf979aaf275..c053074b98b4 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -225,6 +225,7 @@ struct perf_sched { bool show_wakeups; bool show_next; bool show_migrations; + bool pre_migrations; bool show_state; bool show_prio; u64 skipped_samples; @@ -244,7 +245,9 @@ struct thread_runtime { u64 dt_iowait; /* time between CPU access by iowait (off cpu) */ u64 dt_preempt; /* time between CPU access by preempt (off cpu) */ u64 dt_delay; /* time between wakeup and sched-in */ + u64 dt_pre_mig; /* time between migration and wakeup */ u64 ready_to_run; /* time of wakeup */ + u64 migrated; /* time when a thread is migrated */ struct stats run_stats; u64 total_run_time; @@ -252,6 +255,7 @@ struct thread_runtime { u64 total_iowait_time; u64 total_preempt_time; u64 total_delay_time; + u64 total_pre_mig_time; char last_state; @@ -2073,14 +2077,15 @@ static void timehist_header(struct perf_sched *sched) printf(" "); } - if (sched->show_prio) { - printf(" %-*s %-*s %9s %9s %9s", - comm_width, "task name", MAX_PRIO_STR_LEN, "prio", - "wait time", "sch delay", "run time"); - } else { - printf(" %-*s %9s %9s %9s", comm_width, - "task name", "wait time", "sch delay", "run time"); - } + printf(" %-*s", comm_width, "task name"); + + if (sched->show_prio) + printf(" %-*s", MAX_PRIO_STR_LEN, "prio"); + + printf(" %9s %9s %9s", "wait time", "sch delay", "run time"); + + if (sched->pre_migrations) + printf(" %9s", "pre-mig time"); if (sched->show_state) printf(" %s", "state"); @@ -2095,17 +2100,15 @@ static void timehist_header(struct perf_sched *sched) if (sched->show_cpu_visual) printf(" %*s ", ncpus, ""); - if (sched->show_prio) { - printf(" %-*s %-*s %9s %9s %9s", - comm_width, "[tid/pid]", MAX_PRIO_STR_LEN, "", - "(msec)", "(msec)", "(msec)"); - } else { - printf(" %-*s %9s %9s %9s", comm_width, - "[tid/pid]", "(msec)", "(msec)", "(msec)"); - } + printf(" %-*s", comm_width, "[tid/pid]"); - if (sched->show_state) - printf(" %5s", ""); + if (sched->show_prio) + printf(" %-*s", MAX_PRIO_STR_LEN, ""); + + printf(" %9s %9s %9s", "(msec)", "(msec)", "(msec)"); + + if (sched->pre_migrations) + printf(" %9s", "(msec)"); printf("\n"); @@ -2117,15 +2120,15 @@ static void timehist_header(struct perf_sched *sched) if (sched->show_cpu_visual) printf(" %.*s ", ncpus, graph_dotted_line); - if (sched->show_prio) { - printf(" %.*s %.*s %.9s %.9s %.9s", - comm_width, graph_dotted_line, MAX_PRIO_STR_LEN, graph_dotted_line, - graph_dotted_line, graph_dotted_line, graph_dotted_line); - } else { - printf(" %.*s %.9s %.9s %.9s", comm_width, - graph_dotted_line, graph_dotted_line, graph_dotted_line, - graph_dotted_line); - } + printf(" %.*s", comm_width, graph_dotted_line); + + if (sched->show_prio) + printf(" %.*s", MAX_PRIO_STR_LEN, graph_dotted_line); + + printf(" %.9s %.9s %.9s", graph_dotted_line, graph_dotted_line, graph_dotted_line); + + if (sched->pre_migrations) + printf(" %.9s", graph_dotted_line); if (sched->show_state) printf(" %.5s", graph_dotted_line); @@ -2180,6 +2183,8 @@ static void timehist_print_sample(struct perf_sched *sched, print_sched_time(tr->dt_delay, 6); print_sched_time(tr->dt_run, 6); + if (sched->pre_migrations) + print_sched_time(tr->dt_pre_mig, 6); if (sched->show_state) printf(" %5c ", thread__tid(thread) == 0 ? 'I' : state); @@ -2217,18 +2222,21 @@ out: * last_time = time of last sched change event for current task * (i.e, time process was last scheduled out) * ready_to_run = time of wakeup for current task + * migrated = time of task migration to another CPU * - * -----|------------|------------|------------|------ - * last ready tprev t + * -----|-------------|-------------|-------------|-------------|----- + * last ready migrated tprev t * time to run * - * |-------- dt_wait --------| - * |- dt_delay -|-- dt_run --| + * |---------------- dt_wait ----------------| + * |--------- dt_delay ---------|-- dt_run --| + * |- dt_pre_mig -| * - * dt_run = run time of current task - * dt_wait = time between last schedule out event for task and tprev - * represents time spent off the cpu - * dt_delay = time between wakeup and schedule-in of task + * dt_run = run time of current task + * dt_wait = time between last schedule out event for task and tprev + * represents time spent off the cpu + * dt_delay = time between wakeup and schedule-in of task + * dt_pre_mig = time between wakeup and migration to another CPU */ static void timehist_update_runtime_stats(struct thread_runtime *r, @@ -2239,6 +2247,7 @@ static void timehist_update_runtime_stats(struct thread_runtime *r, r->dt_iowait = 0; r->dt_preempt = 0; r->dt_run = 0; + r->dt_pre_mig = 0; if (tprev) { r->dt_run = t - tprev; @@ -2247,6 +2256,9 @@ static void timehist_update_runtime_stats(struct thread_runtime *r, pr_debug("time travel: wakeup time for task > previous sched_switch event\n"); else r->dt_delay = tprev - r->ready_to_run; + + if ((r->migrated > r->ready_to_run) && (r->migrated < tprev)) + r->dt_pre_mig = r->migrated - r->ready_to_run; } if (r->last_time > tprev) @@ -2270,6 +2282,7 @@ static void timehist_update_runtime_stats(struct thread_runtime *r, r->total_sleep_time += r->dt_sleep; r->total_iowait_time += r->dt_iowait; r->total_preempt_time += r->dt_preempt; + r->total_pre_mig_time += r->dt_pre_mig; } static bool is_idle_sample(struct perf_sample *sample, @@ -2683,9 +2696,13 @@ static int timehist_migrate_task_event(const struct perf_tool *tool, return -1; tr->migrations++; + tr->migrated = sample->time; /* show migrations if requested */ - timehist_print_migration_event(sched, evsel, sample, machine, thread); + if (sched->show_migrations) { + timehist_print_migration_event(sched, evsel, sample, + machine, thread); + } return 0; } @@ -2836,11 +2853,13 @@ out: /* last state is used to determine where to account wait time */ tr->last_state = state; - /* sched out event for task so reset ready to run time */ + /* sched out event for task so reset ready to run time and migrated time */ if (state == 'R') tr->ready_to_run = t; else tr->ready_to_run = 0; + + tr->migrated = 0; } evsel__save_time(evsel, sample->time, sample->cpu); @@ -3280,8 +3299,8 @@ static int perf_sched__timehist(struct perf_sched *sched) goto out; } - if (sched->show_migrations && - perf_session__set_tracepoints_handlers(session, migrate_handlers)) + if ((sched->show_migrations || sched->pre_migrations) && + perf_session__set_tracepoints_handlers(session, migrate_handlers)) goto out; /* pre-allocate struct for per-CPU idle stats */ @@ -3823,6 +3842,7 @@ int cmd_sched(int argc, const char **argv) OPT_BOOLEAN(0, "show-prio", &sched.show_prio, "Show task priority"), OPT_STRING(0, "prio", &sched.prio_str, "prio", "analyze events only for given task priority(ies)"), + OPT_BOOLEAN('P', "pre-migrations", &sched.pre_migrations, "Show pre-migration wait time"), OPT_PARENT(sched_options) }; -- cgit v1.2.3 From 1afe05b0cf183035a77fdda1bc633aa5fb9daa43 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 8 Oct 2024 23:22:50 -0700 Subject: perf evsel: Fix missing inherit + sample read check It should not clear the inherit bit simply because the kernel doesn't support the sample read with it. IOW the inherit bit should be kept when the sample read is not requested for the event. Fixes: 90035d3cd876cb71 ("tools/perf: Allow inherit + PERF_SAMPLE_READ when opening events") Acked-by: Ben Gainey Link: https://lore.kernel.org/r/20241009062250.730192-1-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/util/evsel.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index ed0d4d20e357..e9e1f576d34d 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1915,7 +1915,8 @@ static int __evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, static void evsel__disable_missing_features(struct evsel *evsel) { - if (perf_missing_features.inherit_sample_read) + if (perf_missing_features.inherit_sample_read && evsel->core.attr.inherit && + (evsel->core.attr.sample_type & PERF_SAMPLE_READ)) evsel->core.attr.inherit = 0; if (perf_missing_features.branch_counters) evsel->core.attr.branch_sample_type &= ~PERF_SAMPLE_BRANCH_COUNTERS; -- cgit v1.2.3 From 0c383c0827ec73c0c349a2f1eef3e7b9c189fc52 Mon Sep 17 00:00:00 2001 From: Howard Chu Date: Thu, 10 Oct 2024 22:57:00 -0700 Subject: perf test: Delete unused Intel CQM test As Ian Rogers pointed out, intel-cqm.c is neither used nor built. It was deleted in the following commit: commit b24413180f56 ("License cleanup: add SPDX GPL-2.0 license identifier to files with no license") However, it resurfaced soon after in the following commit: commit 5c9295bfe6f5 ("perf tests: Remove Intel CQM perf test") It should be deleted once and for all. Suggested-by: Ian Rogers Signed-off-by: Howard Chu Reviewed-by: Ian Rogers Reviewed-by: Matt Fleming Link: https://lore.kernel.org/r/20241011055700.4142694-1-howardchu95@gmail.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/tests/intel-cqm.c | 128 ---------------------------------- 1 file changed, 128 deletions(-) delete mode 100644 tools/perf/arch/x86/tests/intel-cqm.c (limited to 'tools') diff --git a/tools/perf/arch/x86/tests/intel-cqm.c b/tools/perf/arch/x86/tests/intel-cqm.c deleted file mode 100644 index 360a082fc928..000000000000 --- a/tools/perf/arch/x86/tests/intel-cqm.c +++ /dev/null @@ -1,128 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include "tests/tests.h" -#include "cloexec.h" -#include "debug.h" -#include "evlist.h" -#include "evsel.h" -#include "arch-tests.h" -#include // page_size - -#include -#include -#include -#include -#include - -static pid_t spawn(void) -{ - pid_t pid; - - pid = fork(); - if (pid) - return pid; - - while(1) - sleep(5); - return 0; -} - -/* - * Create an event group that contains both a sampled hardware - * (cpu-cycles) and software (intel_cqm/llc_occupancy/) event. We then - * wait for the hardware perf counter to overflow and generate a PMI, - * which triggers an event read for both of the events in the group. - * - * Since reading Intel CQM event counters requires sending SMP IPIs, the - * CQM pmu needs to handle the above situation gracefully, and return - * the last read counter value to avoid triggering a WARN_ON_ONCE() in - * smp_call_function_many() caused by sending IPIs from NMI context. - */ -int test__intel_cqm_count_nmi_context(struct test_suite *test __maybe_unused, int subtest __maybe_unused) -{ - struct evlist *evlist = NULL; - struct evsel *evsel = NULL; - struct perf_event_attr pe; - int i, fd[2], flag, ret; - size_t mmap_len; - void *event; - pid_t pid; - int err = TEST_FAIL; - - flag = perf_event_open_cloexec_flag(); - - evlist = evlist__new(); - if (!evlist) { - pr_debug("evlist__new failed\n"); - return TEST_FAIL; - } - - ret = parse_event(evlist, "intel_cqm/llc_occupancy/"); - if (ret) { - pr_debug("parse_events failed, is \"intel_cqm/llc_occupancy/\" available?\n"); - err = TEST_SKIP; - goto out; - } - - evsel = evlist__first(evlist); - if (!evsel) { - pr_debug("evlist__first failed\n"); - goto out; - } - - memset(&pe, 0, sizeof(pe)); - pe.size = sizeof(pe); - - pe.type = PERF_TYPE_HARDWARE; - pe.config = PERF_COUNT_HW_CPU_CYCLES; - pe.read_format = PERF_FORMAT_GROUP; - - pe.sample_period = 128; - pe.sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_READ; - - pid = spawn(); - - fd[0] = sys_perf_event_open(&pe, pid, -1, -1, flag); - if (fd[0] < 0) { - pr_debug("failed to open event\n"); - goto out; - } - - memset(&pe, 0, sizeof(pe)); - pe.size = sizeof(pe); - - pe.type = evsel->attr.type; - pe.config = evsel->attr.config; - - fd[1] = sys_perf_event_open(&pe, pid, -1, fd[0], flag); - if (fd[1] < 0) { - pr_debug("failed to open event\n"); - goto out; - } - - /* - * Pick a power-of-two number of pages + 1 for the meta-data - * page (struct perf_event_mmap_page). See tools/perf/design.txt. - */ - mmap_len = page_size * 65; - - event = mmap(NULL, mmap_len, PROT_READ, MAP_SHARED, fd[0], 0); - if (event == (void *)(-1)) { - pr_debug("failed to mmap %d\n", errno); - goto out; - } - - sleep(1); - - err = TEST_OK; - - munmap(event, mmap_len); - - for (i = 0; i < 2; i++) - close(fd[i]); - - kill(pid, SIGKILL); - wait(NULL); -out: - evlist__delete(evlist); - return err; -} -- cgit v1.2.3 From fb98fa3bf86893e53fac7bc951f503caf4a6eb23 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:53:16 +0100 Subject: perf arm-spe: Rename arm_spe__synth_data_source_generic() The arm_spe__synth_data_source_generic() function is invoked when the tool detects that CPUs do not support data source packets and falls back to synthesizing only the memory level. Rename it to arm_spe__synth_memory_level() for better reflecting its purpose. Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20241003185322.192357-2-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 13fd2c8afebd..34e147e8a963 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -496,8 +496,8 @@ static void arm_spe__synth_data_source_neoverse(const struct arm_spe_record *rec } } -static void arm_spe__synth_data_source_generic(const struct arm_spe_record *record, - union perf_mem_data_src *data_src) +static void arm_spe__synth_memory_level(const struct arm_spe_record *record, + union perf_mem_data_src *data_src) { if (record->type & (ARM_SPE_LLC_ACCESS | ARM_SPE_LLC_MISS)) { data_src->mem_lvl = PERF_MEM_LVL_L3; @@ -534,7 +534,7 @@ static u64 arm_spe__synth_data_source(const struct arm_spe_record *record, u64 m if (is_neoverse) arm_spe__synth_data_source_neoverse(record, &data_src); else - arm_spe__synth_data_source_generic(record, &data_src); + arm_spe__synth_memory_level(record, &data_src); if (record->type & (ARM_SPE_TLB_ACCESS | ARM_SPE_TLB_MISS)) { data_src.mem_dtlb = PERF_MEM_TLB_WK; -- cgit v1.2.3 From 50b8f1d5bf4ad7f09ef8012ccf5f94f741df827b Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:53:17 +0100 Subject: perf arm-spe: Rename the common data source encoding The Neoverse CPUs follow the common data source encoding, and other CPU variants can share the same format. Rename the CPU list and data source definitions as common data source names. This change prepares for appending more CPU variants. Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20241003185322.192357-3-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe-decoder/arm-spe-decoder.h | 18 +++++++-------- tools/perf/util/arm-spe.c | 28 +++++++++++------------ 2 files changed, 23 insertions(+), 23 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h index 1443c28545a9..358c611eeddb 100644 --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h @@ -56,15 +56,15 @@ enum arm_spe_op_type { ARM_SPE_OP_BR_INDIRECT = 1 << 17, }; -enum arm_spe_neoverse_data_source { - ARM_SPE_NV_L1D = 0x0, - ARM_SPE_NV_L2 = 0x8, - ARM_SPE_NV_PEER_CORE = 0x9, - ARM_SPE_NV_LOCAL_CLUSTER = 0xa, - ARM_SPE_NV_SYS_CACHE = 0xb, - ARM_SPE_NV_PEER_CLUSTER = 0xc, - ARM_SPE_NV_REMOTE = 0xd, - ARM_SPE_NV_DRAM = 0xe, +enum arm_spe_common_data_source { + ARM_SPE_COMMON_DS_L1D = 0x0, + ARM_SPE_COMMON_DS_L2 = 0x8, + ARM_SPE_COMMON_DS_PEER_CORE = 0x9, + ARM_SPE_COMMON_DS_LOCAL_CLUSTER = 0xa, + ARM_SPE_COMMON_DS_SYS_CACHE = 0xb, + ARM_SPE_COMMON_DS_PEER_CLUSTER = 0xc, + ARM_SPE_COMMON_DS_REMOTE = 0xd, + ARM_SPE_COMMON_DS_DRAM = 0xe, }; struct arm_spe_record { diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 34e147e8a963..b0e9eb6057c3 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -413,15 +413,15 @@ static int arm_spe__synth_instruction_sample(struct arm_spe_queue *speq, return arm_spe_deliver_synth_event(spe, speq, event, &sample); } -static const struct midr_range neoverse_spe[] = { +static const struct midr_range common_ds_encoding_cpus[] = { MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V1), {}, }; -static void arm_spe__synth_data_source_neoverse(const struct arm_spe_record *record, - union perf_mem_data_src *data_src) +static void arm_spe__synth_data_source_common(const struct arm_spe_record *record, + union perf_mem_data_src *data_src) { /* * Even though four levels of cache hierarchy are possible, no known @@ -443,17 +443,17 @@ static void arm_spe__synth_data_source_neoverse(const struct arm_spe_record *rec } switch (record->source) { - case ARM_SPE_NV_L1D: + case ARM_SPE_COMMON_DS_L1D: data_src->mem_lvl = PERF_MEM_LVL_L1 | PERF_MEM_LVL_HIT; data_src->mem_lvl_num = PERF_MEM_LVLNUM_L1; data_src->mem_snoop = PERF_MEM_SNOOP_NONE; break; - case ARM_SPE_NV_L2: + case ARM_SPE_COMMON_DS_L2: data_src->mem_lvl = PERF_MEM_LVL_L2 | PERF_MEM_LVL_HIT; data_src->mem_lvl_num = PERF_MEM_LVLNUM_L2; data_src->mem_snoop = PERF_MEM_SNOOP_NONE; break; - case ARM_SPE_NV_PEER_CORE: + case ARM_SPE_COMMON_DS_PEER_CORE: data_src->mem_lvl = PERF_MEM_LVL_L2 | PERF_MEM_LVL_HIT; data_src->mem_lvl_num = PERF_MEM_LVLNUM_L2; data_src->mem_snoopx = PERF_MEM_SNOOPX_PEER; @@ -462,8 +462,8 @@ static void arm_spe__synth_data_source_neoverse(const struct arm_spe_record *rec * We don't know if this is L1, L2 but we do know it was a cache-2-cache * transfer, so set SNOOPX_PEER */ - case ARM_SPE_NV_LOCAL_CLUSTER: - case ARM_SPE_NV_PEER_CLUSTER: + case ARM_SPE_COMMON_DS_LOCAL_CLUSTER: + case ARM_SPE_COMMON_DS_PEER_CLUSTER: data_src->mem_lvl = PERF_MEM_LVL_L3 | PERF_MEM_LVL_HIT; data_src->mem_lvl_num = PERF_MEM_LVLNUM_L3; data_src->mem_snoopx = PERF_MEM_SNOOPX_PEER; @@ -471,7 +471,7 @@ static void arm_spe__synth_data_source_neoverse(const struct arm_spe_record *rec /* * System cache is assumed to be L3 */ - case ARM_SPE_NV_SYS_CACHE: + case ARM_SPE_COMMON_DS_SYS_CACHE: data_src->mem_lvl = PERF_MEM_LVL_L3 | PERF_MEM_LVL_HIT; data_src->mem_lvl_num = PERF_MEM_LVLNUM_L3; data_src->mem_snoop = PERF_MEM_SNOOP_HIT; @@ -480,13 +480,13 @@ static void arm_spe__synth_data_source_neoverse(const struct arm_spe_record *rec * We don't know what level it hit in, except it came from the other * socket */ - case ARM_SPE_NV_REMOTE: + case ARM_SPE_COMMON_DS_REMOTE: data_src->mem_lvl = PERF_MEM_LVL_REM_CCE1; data_src->mem_lvl_num = PERF_MEM_LVLNUM_ANY_CACHE; data_src->mem_remote = PERF_MEM_REMOTE_REMOTE; data_src->mem_snoopx = PERF_MEM_SNOOPX_PEER; break; - case ARM_SPE_NV_DRAM: + case ARM_SPE_COMMON_DS_DRAM: data_src->mem_lvl = PERF_MEM_LVL_LOC_RAM | PERF_MEM_LVL_HIT; data_src->mem_lvl_num = PERF_MEM_LVLNUM_RAM; data_src->mem_snoop = PERF_MEM_SNOOP_NONE; @@ -522,7 +522,7 @@ static void arm_spe__synth_memory_level(const struct arm_spe_record *record, static u64 arm_spe__synth_data_source(const struct arm_spe_record *record, u64 midr) { union perf_mem_data_src data_src = { .mem_op = PERF_MEM_OP_NA }; - bool is_neoverse = is_midr_in_range_list(midr, neoverse_spe); + bool is_common = is_midr_in_range_list(midr, common_ds_encoding_cpus); if (record->op & ARM_SPE_OP_LD) data_src.mem_op = PERF_MEM_OP_LOAD; @@ -531,8 +531,8 @@ static u64 arm_spe__synth_data_source(const struct arm_spe_record *record, u64 m else return 0; - if (is_neoverse) - arm_spe__synth_data_source_neoverse(record, &data_src); + if (is_common) + arm_spe__synth_data_source_common(record, &data_src); else arm_spe__synth_memory_level(record, &data_src); -- cgit v1.2.3 From 56ae663e7636f2ce180201f0f18d7736c319a43f Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:53:18 +0100 Subject: perf arm-spe: Introduce arm_spe__is_homogeneous() Introduce the arm_spe__is_homogeneous() function, it uses to check if Arm SPE is homogeneous cross all CPUs. Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20241003185322.192357-4-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index b0e9eb6057c3..587943b6bdb8 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -82,6 +82,7 @@ struct arm_spe { u64 **metadata; u64 metadata_ver; u64 metadata_nr_cpu; + bool is_homogeneous; }; struct arm_spe_queue { @@ -1374,6 +1375,30 @@ synth_instructions_out: return 0; } +static bool arm_spe__is_homogeneous(u64 **metadata, int nr_cpu) +{ + u64 midr; + int i; + + if (!nr_cpu) + return false; + + for (i = 0; i < nr_cpu; i++) { + if (!metadata[i]) + return false; + + if (i == 0) { + midr = metadata[i][ARM_SPE_CPU_MIDR]; + continue; + } + + if (midr != metadata[i][ARM_SPE_CPU_MIDR]) + return false; + } + + return true; +} + int arm_spe_process_auxtrace_info(union perf_event *event, struct perf_session *session) { @@ -1419,6 +1444,7 @@ int arm_spe_process_auxtrace_info(union perf_event *event, spe->metadata = metadata; spe->metadata_ver = metadata_ver; spe->metadata_nr_cpu = nr_cpu; + spe->is_homogeneous = arm_spe__is_homogeneous(metadata, nr_cpu); spe->timeless_decoding = arm_spe__is_timeless_decoding(spe); -- cgit v1.2.3 From ba5e7169e5483a61899497e23fa18f7ef33aa827 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:53:19 +0100 Subject: perf arm-spe: Use metadata to decide the data source feature Use the info in the metadata to decide if the data source feature is supported. The CPU MIDR must be in the CPU list for the common data source encoding. For the metadata version 1, it doesn't include info for MIDR. In this case, due to absent info for making decision, print out warning to remind users to upgrade tool and returns false. Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20241003185322.192357-5-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 67 ++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 64 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 587943b6bdb8..9221b2f66bbe 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -278,6 +278,20 @@ static int arm_spe_set_tid(struct arm_spe_queue *speq, pid_t tid) return 0; } +static u64 *arm_spe__get_metadata_by_cpu(struct arm_spe *spe, u64 cpu) +{ + u64 i; + + if (!spe->metadata) + return NULL; + + for (i = 0; i < spe->metadata_nr_cpu; i++) + if (spe->metadata[i][ARM_SPE_CPU] == cpu) + return spe->metadata[i]; + + return NULL; +} + static struct simd_flags arm_spe__synth_simd_flags(const struct arm_spe_record *record) { struct simd_flags simd_flags = {}; @@ -520,10 +534,57 @@ static void arm_spe__synth_memory_level(const struct arm_spe_record *record, data_src->mem_lvl |= PERF_MEM_LVL_REM_CCE1; } -static u64 arm_spe__synth_data_source(const struct arm_spe_record *record, u64 midr) +static bool arm_spe__is_common_ds_encoding(struct arm_spe_queue *speq) +{ + struct arm_spe *spe = speq->spe; + bool is_in_cpu_list; + u64 *metadata = NULL; + u64 midr = 0; + + /* + * Metadata version 1 doesn't contain any info for MIDR. + * Simply return false in this case. + */ + if (spe->metadata_ver == 1) { + pr_warning_once("The data file contains metadata version 1, " + "which is absent the info for data source. " + "Please upgrade the tool to record data.\n"); + return false; + } + + /* CPU ID is -1 for per-thread mode */ + if (speq->cpu < 0) { + /* + * On the heterogeneous system, due to CPU ID is -1, + * cannot confirm the data source packet is supported. + */ + if (!spe->is_homogeneous) + return false; + + /* In homogeneous system, simply use CPU0's metadata */ + if (spe->metadata) + metadata = spe->metadata[0]; + } else { + metadata = arm_spe__get_metadata_by_cpu(spe, speq->cpu); + } + + if (!metadata) + return false; + + midr = metadata[ARM_SPE_CPU_MIDR]; + + is_in_cpu_list = is_midr_in_range_list(midr, common_ds_encoding_cpus); + if (is_in_cpu_list) + return true; + else + return false; +} + +static u64 arm_spe__synth_data_source(struct arm_spe_queue *speq, + const struct arm_spe_record *record) { union perf_mem_data_src data_src = { .mem_op = PERF_MEM_OP_NA }; - bool is_common = is_midr_in_range_list(midr, common_ds_encoding_cpus); + bool is_common = arm_spe__is_common_ds_encoding(speq); if (record->op & ARM_SPE_OP_LD) data_src.mem_op = PERF_MEM_OP_LOAD; @@ -556,7 +617,7 @@ static int arm_spe_sample(struct arm_spe_queue *speq) u64 data_src; int err; - data_src = arm_spe__synth_data_source(record, spe->midr); + data_src = arm_spe__synth_data_source(speq, record); if (spe->sample_flc) { if (record->type & ARM_SPE_L1D_MISS) { -- cgit v1.2.3 From 6bcf54c89b3d8406433839f0e3b72c08b4a1caf3 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:53:20 +0100 Subject: perf arm-spe: Remove the unused 'midr' field The 'midr' field is replaced by the MIDR values stored in metadata (per CPU wise). Remove the 'midr' field as it is no longer used. Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20241003185322.192357-6-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 9221b2f66bbe..485f60c32309 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -46,7 +46,6 @@ struct arm_spe { struct perf_session *session; struct machine *machine; u32 pmu_type; - u64 midr; struct perf_tsc_conversion tc; @@ -1466,8 +1465,6 @@ int arm_spe_process_auxtrace_info(union perf_event *event, struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info; size_t min_sz = ARM_SPE_AUXTRACE_V1_PRIV_SIZE; struct perf_record_time_conv *tc = &session->time_conv; - const char *cpuid = perf_env__cpuid(session->evlist->env); - u64 midr = strtol(cpuid, NULL, 16); struct arm_spe *spe; u64 **metadata = NULL; u64 metadata_ver; @@ -1501,7 +1498,6 @@ int arm_spe_process_auxtrace_info(union perf_event *event, spe->pmu_type = auxtrace_info->priv[ARM_SPE_PMU_TYPE]; else spe->pmu_type = auxtrace_info->priv[ARM_SPE_PMU_TYPE_V2]; - spe->midr = midr; spe->metadata = metadata; spe->metadata_ver = metadata_ver; spe->metadata_nr_cpu = nr_cpu; -- cgit v1.2.3 From 041c0e5715a65a1b653283b853b4ca973780607a Mon Sep 17 00:00:00 2001 From: Besar Wicaksono Date: Thu, 3 Oct 2024 19:53:21 +0100 Subject: perf arm-spe: Add Neoverse-V2 to common data source encoding list Add Neoverse-V2 MIDR to the common data source encoding range list. Signed-off-by: Besar Wicaksono Reviewed-by: Leo Yan Reviewed-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20241003185322.192357-7-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 485f60c32309..5c34a9ae3862 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -431,6 +431,7 @@ static const struct midr_range common_ds_encoding_cpus[] = { MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V1), + MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V2), {}, }; -- cgit v1.2.3 From ea2ead4224fd3899f6dadd4c1fc526f32ec2246c Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Thu, 3 Oct 2024 19:53:22 +0100 Subject: perf arm-spe: Add Cortex CPUs to common data source encoding list Add Cortex-A720, Cortex-A725, Cortex-X1C, Cortex-X3 and Cortex-X925 into the common data source encoding list. For everyone of these CPUs, it technical reference manual defines the data source packet as the common encoding format. Signed-off-by: Leo Yan Reviewed-by: James Clark Link: https://lore.kernel.org/r/20241003185322.192357-8-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 5c34a9ae3862..c424e5b9a11d 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -428,6 +428,11 @@ static int arm_spe__synth_instruction_sample(struct arm_spe_queue *speq, } static const struct midr_range common_ds_encoding_cpus[] = { + MIDR_ALL_VERSIONS(MIDR_CORTEX_A720), + MIDR_ALL_VERSIONS(MIDR_CORTEX_A725), + MIDR_ALL_VERSIONS(MIDR_CORTEX_X1C), + MIDR_ALL_VERSIONS(MIDR_CORTEX_X3), + MIDR_ALL_VERSIONS(MIDR_CORTEX_X925), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V1), -- cgit v1.2.3 From 80fa614e2fbcf11069f0995e1601fb2e5702e2f4 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Mon, 23 Sep 2024 18:30:36 -0600 Subject: selftests: timers: Remove local NSEC_PER_SEC and USEC_PER_SEC defines Remove local NSEC_PER_SEC and USEC_PER_SEC defines. Pick them up from include/vdso/time64.h. This requires -I $(top_srcdir) to the timers Makefile to include the include/vdso/time64.h. posix_timers test names the defines NSECS_PER_SEC and USECS_PER_SEC. Change posix_timers test references to the defines to match the defines in the header file. Signed-off-by: Shuah Khan Acked-by: John Stultz Acked-by: Thomas Gleixner Signed-off-by: Shuah Khan --- tools/testing/selftests/timers/Makefile | 2 +- tools/testing/selftests/timers/adjtick.c | 4 +--- tools/testing/selftests/timers/alarmtimer-suspend.c | 2 +- tools/testing/selftests/timers/inconsistency-check.c | 2 +- tools/testing/selftests/timers/leap-a-day.c | 2 +- tools/testing/selftests/timers/mqueue-lat.c | 2 +- tools/testing/selftests/timers/nanosleep.c | 3 +-- tools/testing/selftests/timers/nsleep-lat.c | 3 +-- tools/testing/selftests/timers/posix_timers.c | 15 +++++++-------- tools/testing/selftests/timers/raw_skew.c | 2 +- tools/testing/selftests/timers/set-2038.c | 3 +-- tools/testing/selftests/timers/set-timer-lat.c | 3 +-- tools/testing/selftests/timers/valid-adjtimex.c | 4 +--- 13 files changed, 19 insertions(+), 28 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile index 0e73a16874c4..32203593c62e 100644 --- a/tools/testing/selftests/timers/Makefile +++ b/tools/testing/selftests/timers/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -CFLAGS += -O3 -Wl,-no-as-needed -Wall +CFLAGS += -O3 -Wl,-no-as-needed -Wall -I $(top_srcdir) LDLIBS += -lrt -lpthread -lm # these are all "safe" tests that don't modify diff --git a/tools/testing/selftests/timers/adjtick.c b/tools/testing/selftests/timers/adjtick.c index 205b76a4abb4..cb9a30f54662 100644 --- a/tools/testing/selftests/timers/adjtick.c +++ b/tools/testing/selftests/timers/adjtick.c @@ -22,14 +22,12 @@ #include #include #include +#include #include "../kselftest.h" #define CLOCK_MONOTONIC_RAW 4 -#define NSEC_PER_SEC 1000000000LL -#define USEC_PER_SEC 1000000 - #define MILLION 1000000 long systick; diff --git a/tools/testing/selftests/timers/alarmtimer-suspend.c b/tools/testing/selftests/timers/alarmtimer-suspend.c index ad52e608b88e..62da2a3f949e 100644 --- a/tools/testing/selftests/timers/alarmtimer-suspend.c +++ b/tools/testing/selftests/timers/alarmtimer-suspend.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "../kselftest.h" #define CLOCK_REALTIME 0 @@ -45,7 +46,6 @@ #define NR_CLOCKIDS 12 -#define NSEC_PER_SEC 1000000000ULL #define UNREASONABLE_LAT (NSEC_PER_SEC * 5) /* hopefully we resume in 5 secs */ #define SUSPEND_SECS 15 diff --git a/tools/testing/selftests/timers/inconsistency-check.c b/tools/testing/selftests/timers/inconsistency-check.c index 36a49fba6c9b..75650cf0503f 100644 --- a/tools/testing/selftests/timers/inconsistency-check.c +++ b/tools/testing/selftests/timers/inconsistency-check.c @@ -28,10 +28,10 @@ #include #include #include +#include #include "../kselftest.h" #define CALLS_PER_LOOP 64 -#define NSEC_PER_SEC 1000000000ULL #define CLOCK_REALTIME 0 #define CLOCK_MONOTONIC 1 diff --git a/tools/testing/selftests/timers/leap-a-day.c b/tools/testing/selftests/timers/leap-a-day.c index 986abbdb1521..04004a7c0934 100644 --- a/tools/testing/selftests/timers/leap-a-day.c +++ b/tools/testing/selftests/timers/leap-a-day.c @@ -48,9 +48,9 @@ #include #include #include +#include #include "../kselftest.h" -#define NSEC_PER_SEC 1000000000ULL #define CLOCK_TAI 11 time_t next_leap; diff --git a/tools/testing/selftests/timers/mqueue-lat.c b/tools/testing/selftests/timers/mqueue-lat.c index f3179a605bba..63de2334a291 100644 --- a/tools/testing/selftests/timers/mqueue-lat.c +++ b/tools/testing/selftests/timers/mqueue-lat.c @@ -29,9 +29,9 @@ #include #include #include +#include #include "../kselftest.h" -#define NSEC_PER_SEC 1000000000ULL #define TARGET_TIMEOUT 100000000 /* 100ms in nanoseconds */ #define UNRESONABLE_LATENCY 40000000 /* 40ms in nanosecs */ diff --git a/tools/testing/selftests/timers/nanosleep.c b/tools/testing/selftests/timers/nanosleep.c index df1d03516e7b..9a354e38a569 100644 --- a/tools/testing/selftests/timers/nanosleep.c +++ b/tools/testing/selftests/timers/nanosleep.c @@ -27,10 +27,9 @@ #include #include #include +#include #include "../kselftest.h" -#define NSEC_PER_SEC 1000000000ULL - #define CLOCK_REALTIME 0 #define CLOCK_MONOTONIC 1 #define CLOCK_PROCESS_CPUTIME_ID 2 diff --git a/tools/testing/selftests/timers/nsleep-lat.c b/tools/testing/selftests/timers/nsleep-lat.c index edb5acacf214..f6a99490b291 100644 --- a/tools/testing/selftests/timers/nsleep-lat.c +++ b/tools/testing/selftests/timers/nsleep-lat.c @@ -24,10 +24,9 @@ #include #include #include +#include #include "../kselftest.h" -#define NSEC_PER_SEC 1000000000ULL - #define UNRESONABLE_LATENCY 40000000 /* 40ms in nanosecs */ diff --git a/tools/testing/selftests/timers/posix_timers.c b/tools/testing/selftests/timers/posix_timers.c index ddb1cebc844e..9814b3a1c77d 100644 --- a/tools/testing/selftests/timers/posix_timers.c +++ b/tools/testing/selftests/timers/posix_timers.c @@ -15,13 +15,12 @@ #include #include #include +#include #include #include "../kselftest.h" #define DELAY 2 -#define USECS_PER_SEC 1000000 -#define NSECS_PER_SEC 1000000000 static void __fatal_error(const char *test, const char *name, const char *what) { @@ -86,9 +85,9 @@ static int check_diff(struct timeval start, struct timeval end) long long diff; diff = end.tv_usec - start.tv_usec; - diff += (end.tv_sec - start.tv_sec) * USECS_PER_SEC; + diff += (end.tv_sec - start.tv_sec) * USEC_PER_SEC; - if (llabs(diff - DELAY * USECS_PER_SEC) > USECS_PER_SEC / 2) { + if (llabs(diff - DELAY * USEC_PER_SEC) > USEC_PER_SEC / 2) { printf("Diff too high: %lld..", diff); return -1; } @@ -448,7 +447,7 @@ static inline int64_t calcdiff_ns(struct timespec t1, struct timespec t2) { int64_t diff; - diff = NSECS_PER_SEC * (int64_t)((int) t1.tv_sec - (int) t2.tv_sec); + diff = NSEC_PER_SEC * (int64_t)((int) t1.tv_sec - (int) t2.tv_sec); diff += ((int) t1.tv_nsec - (int) t2.tv_nsec); return diff; } @@ -479,7 +478,7 @@ static void check_sigev_none(int which, const char *name) do { if (clock_gettime(which, &now)) fatal_error(name, "clock_gettime()"); - } while (calcdiff_ns(now, start) < NSECS_PER_SEC); + } while (calcdiff_ns(now, start) < NSEC_PER_SEC); if (timer_gettime(timerid, &its)) fatal_error(name, "timer_gettime()"); @@ -536,7 +535,7 @@ static void check_gettime(int which, const char *name) wraps++; prev = its; - } while (calcdiff_ns(now, start) < NSECS_PER_SEC); + } while (calcdiff_ns(now, start) < NSEC_PER_SEC); if (timer_delete(timerid)) fatal_error(name, "timer_delete()"); @@ -587,7 +586,7 @@ static void check_overrun(int which, const char *name) do { if (clock_gettime(which, &now)) fatal_error(name, "clock_gettime()"); - } while (calcdiff_ns(now, start) < NSECS_PER_SEC); + } while (calcdiff_ns(now, start) < NSEC_PER_SEC); /* Unblock it, which should deliver a signal */ if (sigprocmask(SIG_UNBLOCK, &set, NULL)) diff --git a/tools/testing/selftests/timers/raw_skew.c b/tools/testing/selftests/timers/raw_skew.c index 030143eb09b4..ea50e4efc422 100644 --- a/tools/testing/selftests/timers/raw_skew.c +++ b/tools/testing/selftests/timers/raw_skew.c @@ -25,10 +25,10 @@ #include #include #include +#include #include "../kselftest.h" #define CLOCK_MONOTONIC_RAW 4 -#define NSEC_PER_SEC 1000000000LL #define shift_right(x, s) ({ \ __typeof__(x) __x = (x); \ diff --git a/tools/testing/selftests/timers/set-2038.c b/tools/testing/selftests/timers/set-2038.c index f7d978721b9e..ed244315e11c 100644 --- a/tools/testing/selftests/timers/set-2038.c +++ b/tools/testing/selftests/timers/set-2038.c @@ -27,10 +27,9 @@ #include #include #include +#include #include "../kselftest.h" -#define NSEC_PER_SEC 1000000000LL - #define KTIME_MAX ((long long)~((unsigned long long)1 << 63)) #define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC) diff --git a/tools/testing/selftests/timers/set-timer-lat.c b/tools/testing/selftests/timers/set-timer-lat.c index 7ce240c89b21..5365e9ae61c3 100644 --- a/tools/testing/selftests/timers/set-timer-lat.c +++ b/tools/testing/selftests/timers/set-timer-lat.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "../kselftest.h" #define CLOCK_REALTIME 0 @@ -44,8 +45,6 @@ #define CLOCK_TAI 11 #define NR_CLOCKIDS 12 - -#define NSEC_PER_SEC 1000000000ULL #define UNRESONABLE_LATENCY 40000000 /* 40ms in nanosecs */ #define TIMER_SECS 1 diff --git a/tools/testing/selftests/timers/valid-adjtimex.c b/tools/testing/selftests/timers/valid-adjtimex.c index d500884801d8..6b7801055ad1 100644 --- a/tools/testing/selftests/timers/valid-adjtimex.c +++ b/tools/testing/selftests/timers/valid-adjtimex.c @@ -29,11 +29,9 @@ #include #include #include +#include #include "../kselftest.h" -#define NSEC_PER_SEC 1000000000LL -#define USEC_PER_SEC 1000000LL - #define ADJ_SETOFFSET 0x0100 #include -- cgit v1.2.3 From d70d4218339e657e80ea478e43ec327cf374826b Mon Sep 17 00:00:00 2001 From: Gianfranco Trad Date: Thu, 29 Aug 2024 17:37:25 +0200 Subject: selftests: timers: improve timer_create failure message improve timer_create failure message with strerror() function to give more information to the user. Signed-off-by: Gianfranco Trad Acked-by: John Stultz Signed-off-by: Shuah Khan --- tools/testing/selftests/timers/alarmtimer-suspend.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/timers/alarmtimer-suspend.c b/tools/testing/selftests/timers/alarmtimer-suspend.c index 62da2a3f949e..9877158a0853 100644 --- a/tools/testing/selftests/timers/alarmtimer-suspend.c +++ b/tools/testing/selftests/timers/alarmtimer-suspend.c @@ -29,6 +29,7 @@ #include #include #include +#include #include "../kselftest.h" #define CLOCK_REALTIME 0 @@ -142,8 +143,8 @@ int main(void) alarmcount = 0; if (timer_create(alarm_clock_id, &se, &tm1) == -1) { - printf("timer_create failed, %s unsupported?\n", - clockstring(alarm_clock_id)); + printf("timer_create failed, %s unsupported?: %s\n", + clockstring(alarm_clock_id), strerror(errno)); break; } -- cgit v1.2.3 From 488be88a3237f840fd5992465945ed6914b46257 Mon Sep 17 00:00:00 2001 From: Chen Ni Date: Thu, 10 Oct 2024 15:37:07 +0800 Subject: selftests: timers: Remove unneeded semicolon Remove unnecessary semicolons reported by Coccinelle/coccicheck and the semantic patch at scripts/coccinelle/misc/semicolon.cocci. Signed-off-by: Chen Ni Acked-by: John Stultz Signed-off-by: Shuah Khan --- tools/testing/selftests/timers/set-timer-lat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/timers/set-timer-lat.c b/tools/testing/selftests/timers/set-timer-lat.c index 5365e9ae61c3..7a1a2382538c 100644 --- a/tools/testing/selftests/timers/set-timer-lat.c +++ b/tools/testing/selftests/timers/set-timer-lat.c @@ -79,7 +79,7 @@ char *clockstring(int clockid) return "CLOCK_BOOTTIME_ALARM"; case CLOCK_TAI: return "CLOCK_TAI"; - }; + } return "UNKNOWN_CLOCKID"; } -- cgit v1.2.3 From ecfe6870abac400036d802e28dde4822ec153ffd Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Fri, 11 Oct 2024 16:52:36 -0600 Subject: selftests:timers: remove local CLOCKID defines timers tests defines CLOCKIDs locally. Remove all local CLOCKIDs except CLOCK_HWSPECIFIC and use defines from time.h header file. CLOCK_HWSPECIFIC and CLOCK_SGI_CYCLE are the same and CLOCK_SGI_CYCLE is deprecated, Signed-off-by: Shuah Khan Acked-by: John Stultz Signed-off-by: Shuah Khan --- tools/testing/selftests/timers/adjtick.c | 2 -- tools/testing/selftests/timers/alarmtimer-suspend.c | 15 --------------- tools/testing/selftests/timers/inconsistency-check.c | 19 ++++--------------- tools/testing/selftests/timers/nanosleep.c | 18 ++++-------------- tools/testing/selftests/timers/nsleep-lat.c | 19 ++++--------------- tools/testing/selftests/timers/raw_skew.c | 2 -- tools/testing/selftests/timers/set-timer-lat.c | 16 +++------------- 7 files changed, 15 insertions(+), 76 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/timers/adjtick.c b/tools/testing/selftests/timers/adjtick.c index cb9a30f54662..777d9494b683 100644 --- a/tools/testing/selftests/timers/adjtick.c +++ b/tools/testing/selftests/timers/adjtick.c @@ -26,8 +26,6 @@ #include "../kselftest.h" -#define CLOCK_MONOTONIC_RAW 4 - #define MILLION 1000000 long systick; diff --git a/tools/testing/selftests/timers/alarmtimer-suspend.c b/tools/testing/selftests/timers/alarmtimer-suspend.c index 9877158a0853..a9ef76ea6051 100644 --- a/tools/testing/selftests/timers/alarmtimer-suspend.c +++ b/tools/testing/selftests/timers/alarmtimer-suspend.c @@ -32,21 +32,6 @@ #include #include "../kselftest.h" -#define CLOCK_REALTIME 0 -#define CLOCK_MONOTONIC 1 -#define CLOCK_PROCESS_CPUTIME_ID 2 -#define CLOCK_THREAD_CPUTIME_ID 3 -#define CLOCK_MONOTONIC_RAW 4 -#define CLOCK_REALTIME_COARSE 5 -#define CLOCK_MONOTONIC_COARSE 6 -#define CLOCK_BOOTTIME 7 -#define CLOCK_REALTIME_ALARM 8 -#define CLOCK_BOOTTIME_ALARM 9 -#define CLOCK_HWSPECIFIC 10 -#define CLOCK_TAI 11 -#define NR_CLOCKIDS 12 - - #define UNREASONABLE_LAT (NSEC_PER_SEC * 5) /* hopefully we resume in 5 secs */ #define SUSPEND_SECS 15 diff --git a/tools/testing/selftests/timers/inconsistency-check.c b/tools/testing/selftests/timers/inconsistency-check.c index 75650cf0503f..9d1573769d55 100644 --- a/tools/testing/selftests/timers/inconsistency-check.c +++ b/tools/testing/selftests/timers/inconsistency-check.c @@ -31,21 +31,10 @@ #include #include "../kselftest.h" -#define CALLS_PER_LOOP 64 - -#define CLOCK_REALTIME 0 -#define CLOCK_MONOTONIC 1 -#define CLOCK_PROCESS_CPUTIME_ID 2 -#define CLOCK_THREAD_CPUTIME_ID 3 -#define CLOCK_MONOTONIC_RAW 4 -#define CLOCK_REALTIME_COARSE 5 -#define CLOCK_MONOTONIC_COARSE 6 -#define CLOCK_BOOTTIME 7 -#define CLOCK_REALTIME_ALARM 8 -#define CLOCK_BOOTTIME_ALARM 9 +/* CLOCK_HWSPECIFIC == CLOCK_SGI_CYCLE (Deprecated) */ #define CLOCK_HWSPECIFIC 10 -#define CLOCK_TAI 11 -#define NR_CLOCKIDS 12 + +#define CALLS_PER_LOOP 64 char *clockstring(int clockid) { @@ -152,7 +141,7 @@ int main(int argc, char *argv[]) { int clockid, opt; int userclock = CLOCK_REALTIME; - int maxclocks = NR_CLOCKIDS; + int maxclocks = CLOCK_TAI + 1; int runtime = 10; struct timespec ts; diff --git a/tools/testing/selftests/timers/nanosleep.c b/tools/testing/selftests/timers/nanosleep.c index 9a354e38a569..252c6308c569 100644 --- a/tools/testing/selftests/timers/nanosleep.c +++ b/tools/testing/selftests/timers/nanosleep.c @@ -30,19 +30,8 @@ #include #include "../kselftest.h" -#define CLOCK_REALTIME 0 -#define CLOCK_MONOTONIC 1 -#define CLOCK_PROCESS_CPUTIME_ID 2 -#define CLOCK_THREAD_CPUTIME_ID 3 -#define CLOCK_MONOTONIC_RAW 4 -#define CLOCK_REALTIME_COARSE 5 -#define CLOCK_MONOTONIC_COARSE 6 -#define CLOCK_BOOTTIME 7 -#define CLOCK_REALTIME_ALARM 8 -#define CLOCK_BOOTTIME_ALARM 9 +/* CLOCK_HWSPECIFIC == CLOCK_SGI_CYCLE (Deprecated) */ #define CLOCK_HWSPECIFIC 10 -#define CLOCK_TAI 11 -#define NR_CLOCKIDS 12 #define UNSUPPORTED 0xf00f @@ -131,11 +120,12 @@ int main(int argc, char **argv) { long long length; int clockid, ret; + int max_clocks = CLOCK_TAI + 1; ksft_print_header(); - ksft_set_plan(NR_CLOCKIDS); + ksft_set_plan(max_clocks); - for (clockid = CLOCK_REALTIME; clockid < NR_CLOCKIDS; clockid++) { + for (clockid = CLOCK_REALTIME; clockid < max_clocks; clockid++) { /* Skip cputime clockids since nanosleep won't increment cputime */ if (clockid == CLOCK_PROCESS_CPUTIME_ID || diff --git a/tools/testing/selftests/timers/nsleep-lat.c b/tools/testing/selftests/timers/nsleep-lat.c index f6a99490b291..de23dc0c9f97 100644 --- a/tools/testing/selftests/timers/nsleep-lat.c +++ b/tools/testing/selftests/timers/nsleep-lat.c @@ -29,20 +29,8 @@ #define UNRESONABLE_LATENCY 40000000 /* 40ms in nanosecs */ - -#define CLOCK_REALTIME 0 -#define CLOCK_MONOTONIC 1 -#define CLOCK_PROCESS_CPUTIME_ID 2 -#define CLOCK_THREAD_CPUTIME_ID 3 -#define CLOCK_MONOTONIC_RAW 4 -#define CLOCK_REALTIME_COARSE 5 -#define CLOCK_MONOTONIC_COARSE 6 -#define CLOCK_BOOTTIME 7 -#define CLOCK_REALTIME_ALARM 8 -#define CLOCK_BOOTTIME_ALARM 9 +/* CLOCK_HWSPECIFIC == CLOCK_SGI_CYCLE (Deprecated) */ #define CLOCK_HWSPECIFIC 10 -#define CLOCK_TAI 11 -#define NR_CLOCKIDS 12 #define UNSUPPORTED 0xf00f @@ -144,11 +132,12 @@ int main(int argc, char **argv) { long long length; int clockid, ret; + int max_clocks = CLOCK_TAI + 1; ksft_print_header(); - ksft_set_plan(NR_CLOCKIDS - CLOCK_REALTIME - SKIPPED_CLOCK_COUNT); + ksft_set_plan(max_clocks - CLOCK_REALTIME - SKIPPED_CLOCK_COUNT); - for (clockid = CLOCK_REALTIME; clockid < NR_CLOCKIDS; clockid++) { + for (clockid = CLOCK_REALTIME; clockid < max_clocks; clockid++) { /* Skip cputime clockids since nanosleep won't increment cputime */ if (clockid == CLOCK_PROCESS_CPUTIME_ID || diff --git a/tools/testing/selftests/timers/raw_skew.c b/tools/testing/selftests/timers/raw_skew.c index ea50e4efc422..957f7cd29cb1 100644 --- a/tools/testing/selftests/timers/raw_skew.c +++ b/tools/testing/selftests/timers/raw_skew.c @@ -28,8 +28,6 @@ #include #include "../kselftest.h" -#define CLOCK_MONOTONIC_RAW 4 - #define shift_right(x, s) ({ \ __typeof__(x) __x = (x); \ __typeof__(s) __s = (s); \ diff --git a/tools/testing/selftests/timers/set-timer-lat.c b/tools/testing/selftests/timers/set-timer-lat.c index 7a1a2382538c..9d8437c13929 100644 --- a/tools/testing/selftests/timers/set-timer-lat.c +++ b/tools/testing/selftests/timers/set-timer-lat.c @@ -31,19 +31,8 @@ #include #include "../kselftest.h" -#define CLOCK_REALTIME 0 -#define CLOCK_MONOTONIC 1 -#define CLOCK_PROCESS_CPUTIME_ID 2 -#define CLOCK_THREAD_CPUTIME_ID 3 -#define CLOCK_MONOTONIC_RAW 4 -#define CLOCK_REALTIME_COARSE 5 -#define CLOCK_MONOTONIC_COARSE 6 -#define CLOCK_BOOTTIME 7 -#define CLOCK_REALTIME_ALARM 8 -#define CLOCK_BOOTTIME_ALARM 9 +/* CLOCK_HWSPECIFIC == CLOCK_SGI_CYCLE (Deprecated) */ #define CLOCK_HWSPECIFIC 10 -#define CLOCK_TAI 11 -#define NR_CLOCKIDS 12 #define UNRESONABLE_LATENCY 40000000 /* 40ms in nanosecs */ @@ -253,6 +242,7 @@ int main(void) struct sigaction act; int signum = SIGRTMAX; int ret = 0; + int max_clocks = CLOCK_TAI + 1; /* Set up signal handler: */ sigfillset(&act.sa_mask); @@ -261,7 +251,7 @@ int main(void) sigaction(signum, &act, NULL); printf("Setting timers for every %i seconds\n", TIMER_SECS); - for (clock_id = 0; clock_id < NR_CLOCKIDS; clock_id++) { + for (clock_id = 0; clock_id < max_clocks; clock_id++) { if ((clock_id == CLOCK_PROCESS_CPUTIME_ID) || (clock_id == CLOCK_THREAD_CPUTIME_ID) || -- cgit v1.2.3 From 516010460011ae74ac3b7383cf90ed27e2711cd6 Mon Sep 17 00:00:00 2001 From: Joe Damato Date: Fri, 11 Oct 2024 18:44:57 +0000 Subject: netdev-genl: Dump napi_defer_hard_irqs Support dumping defer_hard_irqs for a NAPI ID. Signed-off-by: Joe Damato Reviewed-by: Eric Dumazet Reviewed-by: Jakub Kicinski Link: https://patch.msgid.link/20241011184527.16393-3-jdamato@fastly.com Signed-off-by: Jakub Kicinski --- tools/include/uapi/linux/netdev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h index 7c308f04e7a0..13dc0b027e86 100644 --- a/tools/include/uapi/linux/netdev.h +++ b/tools/include/uapi/linux/netdev.h @@ -122,6 +122,7 @@ enum { NETDEV_A_NAPI_ID, NETDEV_A_NAPI_IRQ, NETDEV_A_NAPI_PID, + NETDEV_A_NAPI_DEFER_HARD_IRQS, __NETDEV_A_NAPI_MAX, NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1) -- cgit v1.2.3 From 0137891e74576f77a7901718dc0ce08ca074ae74 Mon Sep 17 00:00:00 2001 From: Joe Damato Date: Fri, 11 Oct 2024 18:44:59 +0000 Subject: netdev-genl: Dump gro_flush_timeout Support dumping gro_flush_timeout for a NAPI ID. Signed-off-by: Joe Damato Reviewed-by: Jakub Kicinski Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20241011184527.16393-5-jdamato@fastly.com Signed-off-by: Jakub Kicinski --- tools/include/uapi/linux/netdev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h index 13dc0b027e86..cacd33359c76 100644 --- a/tools/include/uapi/linux/netdev.h +++ b/tools/include/uapi/linux/netdev.h @@ -123,6 +123,7 @@ enum { NETDEV_A_NAPI_IRQ, NETDEV_A_NAPI_PID, NETDEV_A_NAPI_DEFER_HARD_IRQS, + NETDEV_A_NAPI_GRO_FLUSH_TIMEOUT, __NETDEV_A_NAPI_MAX, NETDEV_A_NAPI_MAX = (__NETDEV_A_NAPI_MAX - 1) -- cgit v1.2.3 From 1287c1ae0fc227e5acef11a539eb4e75646e31c7 Mon Sep 17 00:00:00 2001 From: Joe Damato Date: Fri, 11 Oct 2024 18:45:01 +0000 Subject: netdev-genl: Support setting per-NAPI config values Add support to set per-NAPI defer_hard_irqs and gro_flush_timeout. Signed-off-by: Joe Damato Reviewed-by: Jakub Kicinski Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20241011184527.16393-7-jdamato@fastly.com Signed-off-by: Jakub Kicinski --- tools/include/uapi/linux/netdev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h index cacd33359c76..e3ebb49f60d2 100644 --- a/tools/include/uapi/linux/netdev.h +++ b/tools/include/uapi/linux/netdev.h @@ -201,6 +201,7 @@ enum { NETDEV_CMD_NAPI_GET, NETDEV_CMD_QSTATS_GET, NETDEV_CMD_BIND_RX, + NETDEV_CMD_NAPI_SET, __NETDEV_CMD_MAX, NETDEV_CMD_MAX = (__NETDEV_CMD_MAX - 1) -- cgit v1.2.3 From 0cb06dc6c42b1b2940e01f207ddf980f2d637545 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Fri, 11 Oct 2024 16:03:10 -0700 Subject: selftests: net: rebuild YNL if dependencies changed Try to rebuild YNL if either user added a new family or the specs of the families have changed. Stanislav's ncdevmem cause a false positive build failure in NIPA because libynl.a isn't rebuilt after ethtool is added to YNL_GENS. Note that sha1sum is already used in other parts of the build system. Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20241011230311.2529760-1-kuba@kernel.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/ynl.mk | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/ynl.mk b/tools/testing/selftests/net/ynl.mk index 1ef24119def0..add5c0cdeac4 100644 --- a/tools/testing/selftests/net/ynl.mk +++ b/tools/testing/selftests/net/ynl.mk @@ -9,6 +9,8 @@ # YNL_GEN_FILES: TEST_GEN_FILES which need YNL YNL_OUTPUTS := $(patsubst %,$(OUTPUT)/%,$(YNL_GEN_FILES)) +YNL_SPECS := \ + $(patsubst %,$(top_srcdir)/Documentation/netlink/specs/%.yaml,$(YNL_GENS)) $(YNL_OUTPUTS): $(OUTPUT)/libynl.a $(YNL_OUTPUTS): CFLAGS += \ @@ -16,10 +18,19 @@ $(YNL_OUTPUTS): CFLAGS += \ -I$(top_srcdir)/tools/net/ynl/lib/ \ -I$(top_srcdir)/tools/net/ynl/generated/ -$(OUTPUT)/libynl.a: +# Make sure we rebuild libynl if user added a new family. We can't easily +# depend on the contents of a variable so create a fake file with a hash. +YNL_GENS_HASH := $(shell echo $(YNL_GENS) | sha1sum | cut -c1-8) +$(OUTPUT)/.libynl-$(YNL_GENS_HASH).sig: + $(Q)rm -f $(OUTPUT)/.libynl-*.sig + $(Q)touch $(OUTPUT)/.libynl-$(YNL_GENS_HASH).sig + +$(OUTPUT)/libynl.a: $(YNL_SPECS) $(OUTPUT)/.libynl-$(YNL_GENS_HASH).sig + $(Q)rm -f $(top_srcdir)/tools/net/ynl/libynl.a $(Q)$(MAKE) -C $(top_srcdir)/tools/net/ynl GENS="$(YNL_GENS)" libynl.a $(Q)cp $(top_srcdir)/tools/net/ynl/libynl.a $(OUTPUT)/libynl.a EXTRA_CLEAN += \ $(top_srcdir)/tools/net/ynl/lib/__pycache__ \ - $(top_srcdir)/tools/net/ynl/lib/*.[ado] + $(top_srcdir)/tools/net/ynl/lib/*.[ado] \ + $(OUTPUT)/.libynl-*.sig -- cgit v1.2.3 From 60b4d49b9621db4b000c9065dd6457c9a0eda80b Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Fri, 11 Oct 2024 16:03:11 -0700 Subject: selftests: net: move EXTRA_CLEAN of libynl.a into ynl.mk Commit 1fd9e4f25782 ("selftests: make kselftest-clean remove libynl outputs") added EXTRA_CLEAN of YNL generated files to ynl.mk. We already had a EXTRA_CLEAN in the file including the snippet. Consolidate them. Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20241011230311.2529760-2-kuba@kernel.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/Makefile | 1 - tools/testing/selftests/net/ynl.mk | 3 ++- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 649f1fe0dc46..26a4883a65c9 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -98,7 +98,6 @@ TEST_PROGS += vlan_hw_filter.sh TEST_PROGS += bpf_offload.py # YNL files, must be before "include ..lib.mk" -EXTRA_CLEAN += $(OUTPUT)/libynl.a YNL_GEN_FILES := ncdevmem TEST_GEN_FILES += $(YNL_GEN_FILES) diff --git a/tools/testing/selftests/net/ynl.mk b/tools/testing/selftests/net/ynl.mk index add5c0cdeac4..d43afe243779 100644 --- a/tools/testing/selftests/net/ynl.mk +++ b/tools/testing/selftests/net/ynl.mk @@ -33,4 +33,5 @@ $(OUTPUT)/libynl.a: $(YNL_SPECS) $(OUTPUT)/.libynl-$(YNL_GENS_HASH).sig EXTRA_CLEAN += \ $(top_srcdir)/tools/net/ynl/lib/__pycache__ \ $(top_srcdir)/tools/net/ynl/lib/*.[ado] \ - $(OUTPUT)/.libynl-*.sig + $(OUTPUT)/.libynl-*.sig \ + $(OUTPUT)/libynl.a -- cgit v1.2.3 From 11312c86f9d7d1bffe0587185934a7070ce9ec33 Mon Sep 17 00:00:00 2001 From: Xiu Jianfeng Date: Fri, 11 Oct 2024 06:11:53 +0000 Subject: selftests/cgroup: Fix compile error in test_cpu.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When compiling the cgroup selftests with the following command: make -C tools/testing/selftests/cgroup/ the compiler complains as below: test_cpu.c: In function ‘test_cpucg_nice’: test_cpu.c:284:39: error: incompatible type for argument 2 of ‘hog_cpus_timed’ 284 | hog_cpus_timed(cpucg, param); | ^~~~~ | | | struct cpu_hog_func_param test_cpu.c:132:53: note: expected ‘void *’ but argument is of type ‘struct cpu_hog_func_param’ 132 | static int hog_cpus_timed(const char *cgroup, void *arg) | ~~~~~~^~~ Fix it by passing the address of param to hog_cpus_timed(). Fixes: 2e82c0d4562a ("cgroup/rstat: Selftests for niced CPU statistics") Signed-off-by: Xiu Jianfeng Signed-off-by: Tejun Heo --- tools/testing/selftests/cgroup/test_cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/cgroup/test_cpu.c b/tools/testing/selftests/cgroup/test_cpu.c index 201ce14cb422..a2b50af8e9ee 100644 --- a/tools/testing/selftests/cgroup/test_cpu.c +++ b/tools/testing/selftests/cgroup/test_cpu.c @@ -281,7 +281,7 @@ static int test_cpucg_nice(const char *root) /* Try to keep niced CPU usage as constrained to hog_cpu as possible */ nice(1); - hog_cpus_timed(cpucg, param); + hog_cpus_timed(cpucg, ¶m); exit(0); } else { waitpid(pid, &status, 0); -- cgit v1.2.3 From bcbbfaa2612d7d0e9c3eafade5f6e93c3672f34f Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 10 Oct 2024 08:12:48 -0700 Subject: tools: ynl-gen: use names of constants in generated limits YNL specs can use string expressions for limits, like s32-min or u16-max. We convert all of those into their numeric values when generating the code, which isn't always helpful. Try to retain the string representations in the output. Any sort of calculations still need the integers. Signed-off-by: Jakub Kicinski Reviewed-by: Joe Damato Link: https://patch.msgid.link/20241010151248.2049755-1-kuba@kernel.org [pabeni@redhat.com: regenerated netdev-genl-gen.c] Signed-off-by: Paolo Abeni --- tools/net/ynl/ynl-gen-c.py | 36 +++++++++++++++++++++++------------- 1 file changed, 23 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py index 9e8254aad578..d64cb2b49c44 100755 --- a/tools/net/ynl/ynl-gen-c.py +++ b/tools/net/ynl/ynl-gen-c.py @@ -80,11 +80,21 @@ class Type(SpecAttr): value = self.checks.get(limit, default) if value is None: return value - elif value in self.family.consts: + if isinstance(value, int): + return value + if value in self.family.consts: + raise Exception("Resolving family constants not implemented, yet") + return limit_to_number(value) + + def get_limit_str(self, limit, default=None, suffix=''): + value = self.checks.get(limit, default) + if value is None: + return '' + if isinstance(value, int): + return str(value) + suffix + if value in self.family.consts: return c_upper(f"{self.family['name']}-{value}") - if not isinstance(value, int): - value = limit_to_number(value) - return value + return c_upper(value) def resolve(self): if 'name-prefix' in self.attr: @@ -358,11 +368,11 @@ class TypeScalar(Type): elif 'full-range' in self.checks: return f"NLA_POLICY_FULL_RANGE({policy}, &{c_lower(self.enum_name)}_range)" elif 'range' in self.checks: - return f"NLA_POLICY_RANGE({policy}, {self.get_limit('min')}, {self.get_limit('max')})" + return f"NLA_POLICY_RANGE({policy}, {self.get_limit_str('min')}, {self.get_limit_str('max')})" elif 'min' in self.checks: - return f"NLA_POLICY_MIN({policy}, {self.get_limit('min')})" + return f"NLA_POLICY_MIN({policy}, {self.get_limit_str('min')})" elif 'max' in self.checks: - return f"NLA_POLICY_MAX({policy}, {self.get_limit('max')})" + return f"NLA_POLICY_MAX({policy}, {self.get_limit_str('max')})" return super()._attr_policy(policy) def _attr_typol(self): @@ -413,11 +423,11 @@ class TypeString(Type): def _attr_policy(self, policy): if 'exact-len' in self.checks: - mem = 'NLA_POLICY_EXACT_LEN(' + str(self.get_limit('exact-len')) + ')' + mem = 'NLA_POLICY_EXACT_LEN(' + self.get_limit_str('exact-len') + ')' else: mem = '{ .type = ' + policy if 'max-len' in self.checks: - mem += ', .len = ' + str(self.get_limit('max-len')) + mem += ', .len = ' + self.get_limit_str('max-len') mem += ', }' return mem @@ -476,9 +486,9 @@ class TypeBinary(Type): if len(self.checks) == 0: mem = '{ .type = NLA_BINARY, }' elif 'exact-len' in self.checks: - mem = 'NLA_POLICY_EXACT_LEN(' + str(self.get_limit('exact-len')) + ')' + mem = 'NLA_POLICY_EXACT_LEN(' + self.get_limit_str('exact-len') + ')' elif 'min-len' in self.checks: - mem = '{ .len = ' + str(self.get_limit('min-len')) + ', }' + mem = '{ .len = ' + self.get_limit_str('min-len') + ', }' return mem @@ -2166,9 +2176,9 @@ def print_kernel_policy_ranges(family, cw): cw.block_start(line=f'static const struct netlink_range_validation{sign} {c_lower(attr.enum_name)}_range =') members = [] if 'min' in attr.checks: - members.append(('min', str(attr.get_limit('min')) + suffix)) + members.append(('min', attr.get_limit_str('min', suffix=suffix))) if 'max' in attr.checks: - members.append(('max', str(attr.get_limit('max')) + suffix)) + members.append(('max', attr.get_limit_str('max', suffix=suffix))) cw.write_struct_init(members) cw.block_end(line=';') cw.nl() -- cgit v1.2.3 From d59dfd625a8bae3bfc527dd61f24750c4f87266c Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Tue, 15 Oct 2024 13:15:29 +0200 Subject: selftests: add test for specifying 500 lower layers Verify that we can actually specify 500 lower layers and fail at the 501st one. Link: https://lore.kernel.org/r/20241015-leiht-filmabend-a86eed4ff304@brauner Reviewed-by: Amir Goldstein Signed-off-by: Christian Brauner --- .../filesystems/overlayfs/set_layers_via_fds.c | 65 ++++++++++++++++++++++ 1 file changed, 65 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/filesystems/overlayfs/set_layers_via_fds.c b/tools/testing/selftests/filesystems/overlayfs/set_layers_via_fds.c index 301fb5c02852..1d0ae785a667 100644 --- a/tools/testing/selftests/filesystems/overlayfs/set_layers_via_fds.c +++ b/tools/testing/selftests/filesystems/overlayfs/set_layers_via_fds.c @@ -149,4 +149,69 @@ TEST_F(set_layers_via_fds, set_layers_via_fds) ASSERT_EQ(fclose(f_mountinfo), 0); } +TEST_F(set_layers_via_fds, set_500_layers_via_fds) +{ + int fd_context, fd_tmpfs, fd_overlay, fd_work, fd_upper, fd_lower; + int layer_fds[500] = { [0 ... 499] = -EBADF }; + + ASSERT_EQ(unshare(CLONE_NEWNS), 0); + ASSERT_EQ(sys_mount(NULL, "/", NULL, MS_SLAVE | MS_REC, NULL), 0); + + fd_context = sys_fsopen("tmpfs", 0); + ASSERT_GE(fd_context, 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_CMD_CREATE, NULL, NULL, 0), 0); + fd_tmpfs = sys_fsmount(fd_context, 0, 0); + ASSERT_GE(fd_tmpfs, 0); + ASSERT_EQ(close(fd_context), 0); + + for (int i = 0; i < ARRAY_SIZE(layer_fds); i++) { + char path[100]; + + sprintf(path, "l%d", i); + ASSERT_EQ(mkdirat(fd_tmpfs, path, 0755), 0); + layer_fds[i] = openat(fd_tmpfs, path, O_DIRECTORY); + ASSERT_GE(layer_fds[i], 0); + } + + ASSERT_EQ(mkdirat(fd_tmpfs, "w", 0755), 0); + fd_work = openat(fd_tmpfs, "w", O_DIRECTORY); + ASSERT_GE(fd_work, 0); + + ASSERT_EQ(mkdirat(fd_tmpfs, "u", 0755), 0); + fd_upper = openat(fd_tmpfs, "u", O_DIRECTORY); + ASSERT_GE(fd_upper, 0); + + ASSERT_EQ(mkdirat(fd_tmpfs, "l501", 0755), 0); + fd_lower = openat(fd_tmpfs, "l501", O_DIRECTORY); + ASSERT_GE(fd_lower, 0); + + ASSERT_EQ(sys_move_mount(fd_tmpfs, "", -EBADF, "/tmp", MOVE_MOUNT_F_EMPTY_PATH), 0); + ASSERT_EQ(close(fd_tmpfs), 0); + + fd_context = sys_fsopen("overlay", 0); + ASSERT_GE(fd_context, 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "workdir", NULL, fd_work), 0); + ASSERT_EQ(close(fd_work), 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "upperdir", NULL, fd_upper), 0); + ASSERT_EQ(close(fd_upper), 0); + + for (int i = 0; i < ARRAY_SIZE(layer_fds); i++) { + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "lowerdir+", NULL, layer_fds[i]), 0); + ASSERT_EQ(close(layer_fds[i]), 0); + } + + ASSERT_NE(sys_fsconfig(fd_context, FSCONFIG_SET_FD, "lowerdir+", NULL, fd_lower), 0); + ASSERT_EQ(close(fd_lower), 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_CMD_CREATE, NULL, NULL, 0), 0); + + fd_overlay = sys_fsmount(fd_context, 0, 0); + ASSERT_GE(fd_overlay, 0); + ASSERT_EQ(close(fd_context), 0); + ASSERT_EQ(close(fd_overlay), 0); +} + TEST_HARNESS_MAIN -- cgit v1.2.3 From 9317e8933e27501575cbef923dfab30867484e7e Mon Sep 17 00:00:00 2001 From: Gur Stavi Date: Sun, 13 Oct 2024 10:15:26 +0300 Subject: selftests: net/psock_fanout: socket joins fanout when link is down Modify test_control_group to have toggle parameter. When toggle is non-zero, loopback device will be set down for the initialization of fd[1] which is still expected to successfully join the fanout. Signed-off-by: Gur Stavi Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/6f4a506ed5f08f8fc00a966dec8febd1030c6e98.1728802323.git.gur.stavi@huawei.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/psock_fanout.c | 42 +++++++++++++++++++++++++++--- 1 file changed, 39 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c index 4f31e92ebd96..acdfae8f8a9a 100644 --- a/tools/testing/selftests/net/psock_fanout.c +++ b/tools/testing/selftests/net/psock_fanout.c @@ -48,6 +48,7 @@ #include #include #include +#include #include #include #include @@ -59,6 +60,33 @@ static uint32_t cfg_max_num_members; +static void loopback_set_up_down(int state_up) +{ + struct ifreq ifreq = {}; + int fd, err; + + fd = socket(AF_PACKET, SOCK_RAW, 0); + if (fd < 0) { + perror("socket loopback"); + exit(1); + } + strcpy(ifreq.ifr_name, "lo"); + err = ioctl(fd, SIOCGIFFLAGS, &ifreq); + if (err) { + perror("SIOCGIFFLAGS"); + exit(1); + } + if (state_up != !!(ifreq.ifr_flags & IFF_UP)) { + ifreq.ifr_flags ^= IFF_UP; + err = ioctl(fd, SIOCSIFFLAGS, &ifreq); + if (err) { + perror("SIOCSIFFLAGS"); + exit(1); + } + } + close(fd); +} + /* Open a socket in a given fanout mode. * @return -1 if mode is bad, a valid socket otherwise */ static int sock_fanout_open(uint16_t typeflags, uint16_t group_id) @@ -264,17 +292,22 @@ static void test_control_single(void) } /* Test illegal group with different modes or flags */ -static void test_control_group(void) +static void test_control_group(int toggle) { int fds[2]; - fprintf(stderr, "test: control multiple sockets\n"); + if (toggle) + fprintf(stderr, "test: control multiple sockets with link down toggle\n"); + else + fprintf(stderr, "test: control multiple sockets\n"); fds[0] = sock_fanout_open(PACKET_FANOUT_HASH, 0); if (fds[0] == -1) { fprintf(stderr, "ERROR: failed to open HASH socket\n"); exit(1); } + if (toggle) + loopback_set_up_down(0); if (sock_fanout_open(PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_DEFRAG, 0) != -1) { fprintf(stderr, "ERROR: joined group with wrong flag defrag\n"); @@ -294,6 +327,8 @@ static void test_control_group(void) fprintf(stderr, "ERROR: failed to join group\n"); exit(1); } + if (toggle) + loopback_set_up_down(1); if (close(fds[1]) || close(fds[0])) { fprintf(stderr, "ERROR: closing sockets\n"); exit(1); @@ -489,7 +524,8 @@ int main(int argc, char **argv) int port_off = 2, tries = 20, ret; test_control_single(); - test_control_group(); + test_control_group(0); + test_control_group(1); test_control_group_max_num_members(); test_unique_fanout_group_ids(); -- cgit v1.2.3 From 7ec02a3aef05098a413e1d1c7326c15b92189d0c Mon Sep 17 00:00:00 2001 From: Gur Stavi Date: Sun, 13 Oct 2024 10:15:27 +0300 Subject: selftests: net/psock_fanout: unbound socket fanout Add a test that validates that an unbound packet socket cannot create/join a fanout group. Signed-off-by: Gur Stavi Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/7612fa90f613100e2b64c563cab3d7fdf36010db.1728802323.git.gur.stavi@huawei.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/psock_fanout.c | 36 ++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c index acdfae8f8a9a..84c524357075 100644 --- a/tools/testing/selftests/net/psock_fanout.c +++ b/tools/testing/selftests/net/psock_fanout.c @@ -279,6 +279,41 @@ static int sock_fanout_read(int fds[], char *rings[], const int expect[]) return 0; } +/* Test that creating/joining a fanout group fails for unbound socket without + * a specified protocol + */ +static void test_unbound_fanout(void) +{ + int val, fd0, fd1, err; + + fprintf(stderr, "test: unbound fanout\n"); + fd0 = socket(PF_PACKET, SOCK_RAW, 0); + if (fd0 < 0) { + perror("socket packet"); + exit(1); + } + /* Try to create a new fanout group. Should fail. */ + val = (PACKET_FANOUT_HASH << 16) | 1; + err = setsockopt(fd0, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val)); + if (!err) { + fprintf(stderr, "ERROR: unbound socket fanout create\n"); + exit(1); + } + fd1 = sock_fanout_open(PACKET_FANOUT_HASH, 1); + if (fd1 == -1) { + fprintf(stderr, "ERROR: failed to open HASH socket\n"); + exit(1); + } + /* Try to join an existing fanout group. Should fail. */ + err = setsockopt(fd0, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val)); + if (!err) { + fprintf(stderr, "ERROR: unbound socket fanout join\n"); + exit(1); + } + close(fd0); + close(fd1); +} + /* Test illegal mode + flag combination */ static void test_control_single(void) { @@ -523,6 +558,7 @@ int main(int argc, char **argv) const int expect_uniqueid[2][2] = { { 20, 20}, { 20, 20 } }; int port_off = 2, tries = 20, ret; + test_unbound_fanout(); test_control_single(); test_control_group(0); test_control_group(1); -- cgit v1.2.3 From 8c763ffafe218da98575855105f0102dc593381c Mon Sep 17 00:00:00 2001 From: Todd Brandt Date: Wed, 11 Sep 2024 22:59:56 -0700 Subject: pm-graph v5.13 - fix link to pm-graph homepage and in comments - add usleep_range() kprobe to -dev mode - add SIGUSR1 and SIGUSR2 to list of captured signals - kill -s USR1 causes sleepgraph to print out stack trace - kill -s USR2 prints stack trace and exits - stack trace is also printed to -result file - add legacy support for /sys/kernel/debug/tracing/ - allow multiple instances of trace funcs in the same phase - update javascript to draw device detail for multiple trace func instances - add -debugtiming option to print out timestamps on all outputs Signed-off-by: Todd Brandt Link: https://patch.msgid.link/20240912055956.30108-1-todd.e.brandt@intel.com Signed-off-by: Rafael J. Wysocki --- tools/power/pm-graph/sleepgraph.8 | 3 ++ tools/power/pm-graph/sleepgraph.py | 59 ++++++++++++++++++++++++++++---------- 2 files changed, 47 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/power/pm-graph/sleepgraph.8 b/tools/power/pm-graph/sleepgraph.8 index 643271b6fc6f..491ca21dccdb 100644 --- a/tools/power/pm-graph/sleepgraph.8 +++ b/tools/power/pm-graph/sleepgraph.8 @@ -81,6 +81,9 @@ as resume failures. .TP \fB-wifitrace\fR Trace through the wifi reconnect time and include it in the timeline. +.TP +\fB-debugtiming\fR +Add timestamp to each printed output line, accurate to the millisecond. .SS "advanced" .TP diff --git a/tools/power/pm-graph/sleepgraph.py b/tools/power/pm-graph/sleepgraph.py index ef87e63c05c7..918eae58b0b4 100755 --- a/tools/power/pm-graph/sleepgraph.py +++ b/tools/power/pm-graph/sleepgraph.py @@ -18,7 +18,7 @@ # # Links: # Home Page -# https://01.org/pm-graph +# https://www.intel.com/content/www/us/en/developer/topic-technology/open/pm-graph/overview.html # Source repo # git@github.com:intel/pm-graph # @@ -65,6 +65,7 @@ import gzip from threading import Thread from subprocess import call, Popen, PIPE import base64 +import traceback debugtiming = False mystarttime = time.time() @@ -86,7 +87,7 @@ def ascii(text): # store system values and test parameters class SystemValues: title = 'SleepGraph' - version = '5.12' + version = '5.13' ansi = False rs = 0 display = '' @@ -236,7 +237,11 @@ class SystemValues: 'msleep': { 'args_x86_64': {'time':'%di:s32'}, 'ub': 1 }, 'schedule_timeout': { 'args_x86_64': {'timeout':'%di:s32'}, 'ub': 1 }, 'udelay': { 'func':'__const_udelay', 'args_x86_64': {'loops':'%di:s32'}, 'ub': 1 }, - 'usleep_range': { 'args_x86_64': {'min':'%di:s32', 'max':'%si:s32'}, 'ub': 1 }, + 'usleep_range': { + 'func':'usleep_range_state', + 'args_x86_64': {'min':'%di:s32', 'max':'%si:s32'}, + 'ub': 1 + }, 'mutex_lock_slowpath': { 'func':'__mutex_lock_slowpath', 'ub': 1 }, 'acpi_os_stall': {'ub': 1}, 'rt_mutex_slowlock': {'ub': 1}, @@ -342,15 +347,21 @@ class SystemValues: if self.verbose or msg.startswith('WARNING:'): pprint(msg) def signalHandler(self, signum, frame): - if not self.result: - return signame = self.signames[signum] if signum in self.signames else 'UNKNOWN' - msg = 'Signal %s caused a tool exit, line %d' % (signame, frame.f_lineno) + if signame in ['SIGUSR1', 'SIGUSR2', 'SIGSEGV']: + traceback.print_stack() + stack = traceback.format_list(traceback.extract_stack()) + self.outputResult({'stack':stack}) + if signame == 'SIGUSR1': + return + msg = '%s caused a tool exit, line %d' % (signame, frame.f_lineno) + pprint(msg) self.outputResult({'error':msg}) + os.kill(os.getpid(), signal.SIGKILL) sys.exit(3) def signalHandlerInit(self): capture = ['BUS', 'SYS', 'XCPU', 'XFSZ', 'PWR', 'HUP', 'INT', 'QUIT', - 'ILL', 'ABRT', 'FPE', 'SEGV', 'TERM'] + 'ILL', 'ABRT', 'FPE', 'SEGV', 'TERM', 'USR1', 'USR2'] self.signames = dict() for i in capture: s = 'SIG'+i @@ -859,6 +870,11 @@ class SystemValues: # files needed for any trace data files = ['buffer_size_kb', 'current_tracer', 'trace', 'trace_clock', 'trace_marker', 'trace_options', 'tracing_on'] + # legacy check for old systems + if not os.path.exists(self.tpath+'trace'): + self.tpath = '/sys/kernel/debug/tracing/' + if not os.path.exists(self.epath): + self.epath = '/sys/kernel/debug/tracing/events/power/' # files needed for callgraph trace data tp = self.tpath if(self.usecallgraph): @@ -911,6 +927,13 @@ class SystemValues: if num > 0: n = '%d' % num fp = open(self.result, 'a') + if 'stack' in testdata: + fp.write('Printing stack trace:\n') + for line in testdata['stack']: + fp.write(line) + fp.close() + self.sudoUserchown(self.result) + return if 'error' in testdata: fp.write('result%s: fail\n' % n) fp.write('error%s: %s\n' % (n, testdata['error'])) @@ -1980,7 +2003,7 @@ class Data: length = -1.0 if(start >= 0 and end >= 0): length = end - start - if pid == -2 or name not in sysvals.tracefuncs.keys(): + if pid >= -2: i = 2 origname = name while(name in list): @@ -2753,7 +2776,8 @@ class Timeline: def createHeader(self, sv, stamp): if(not stamp['time']): return - self.html += '
%s v%s
' \ + self.html += '
%s v%s
' \ % (sv.title, sv.version) if sv.logmsg and sv.testlog: self.html += '' @@ -5238,12 +5262,16 @@ def addScriptCode(hf, testruns): } var info = dev[i].title.split(" "); var pname = info[info.length-1]; - pd[pname] = parseFloat(info[info.length-3].slice(1)); - total[0] += pd[pname]; + var length = parseFloat(info[info.length-3].slice(1)); + if (pname in pd) + pd[pname] += length; + else + pd[pname] = length; + total[0] += length; if(pname.indexOf("suspend") >= 0) - total[tidx] += pd[pname]; + total[tidx] += length; else - total[tidx+1] += pd[pname]; + total[tidx+1] += length; } } var devname = deviceTitle(this.title, total, cpu); @@ -5262,7 +5290,7 @@ def addScriptCode(hf, testruns): phases[i].style.left = left+"%"; phases[i].title = phases[i].id+" "+pd[phases[i].id]+" ms"; left += w; - var time = ""+pd[phases[i].id]+" ms
"; + var time = ""+pd[phases[i].id].toFixed(3)+" ms
"; var pname = ""+phases[i].id.replace(new RegExp("_", "g"), " ")+""; phases[i].innerHTML = time+pname; } else { @@ -6742,6 +6770,7 @@ def printHelp(): ' -wifi If a wifi connection is available, check that it reconnects after resume.\n'\ ' -wifitrace Trace kernel execution through wifi reconnect.\n'\ ' -netfix Use netfix to reset the network in the event it fails to resume.\n'\ + ' -debugtiming Add timestamp to each printed line\n'\ ' [testprep]\n'\ ' -sync Sync the filesystems before starting the test\n'\ ' -rs on/off Enable/disable runtime suspend for all devices, restore all after test\n'\ @@ -7047,7 +7076,6 @@ if __name__ == '__main__': except: doError('No result file supplied', True) sysvals.result = val - sysvals.signalHandlerInit() else: doError('Invalid argument: '+arg, True) @@ -7057,6 +7085,7 @@ if __name__ == '__main__': if(sysvals.usecallgraph and sysvals.useprocmon): doError('-proc is not compatible with -f') + sysvals.signalHandlerInit() if sysvals.usecallgraph and sysvals.cgskip: sysvals.vprint('Using cgskip file: %s' % sysvals.cgskip) sysvals.setCallgraphBlacklist(sysvals.cgskip) -- cgit v1.2.3 From 8684f2f37d65eeb30b6f704750c691b6e697854b Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Fri, 11 Oct 2024 13:20:42 -0400 Subject: selftests/ftrace: Fix check of return value in fgraph-retval.tc test The addition of recording both the function name and return address to the function graph tracer updated the selftest to check for "=-5" from "= -5". But this causes the test to fail on certain configs, as "= -5" is still a value that can be returned if function addresses are not enabled (older kernels). Check for both "=-5" and " -5" as a success value. Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Cc: Shuah Khan Cc: Donglin Peng Link: https://lore.kernel.org/20241011132042.435f43cc@gandalf.local.home Fixes: 21e92806d39c6 ("function_graph: Support recording and printing the function return address") Signed-off-by: Steven Rostedt (Google) --- tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc index e8e46378b88d..4307d4eef417 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-retval.tc @@ -29,7 +29,7 @@ set -e : "Test printing the error code in signed decimal format" echo 0 > options/funcgraph-retval-hex -count=`cat trace | grep 'proc_reg_write' | grep '=-5' | wc -l` +count=`cat trace | grep 'proc_reg_write' | grep -e '=-5 ' -e '= -5 ' | wc -l` if [ $count -eq 0 ]; then fail "Return value can not be printed in signed decimal format" fi -- cgit v1.2.3 From b78abc21b263ed412f4ba2e02ef8b94571865fce Mon Sep 17 00:00:00 2001 From: Kieran Moy Date: Wed, 16 Oct 2024 02:53:47 +0800 Subject: cpupower: Add Chinese Simplified translation Add Chinese Simplified translations for cpufrequtils package. Signed-off-by: Kieran Moy Reviewed-by: Candice Cheng Signed-off-by: Shuah Khan --- tools/power/cpupower/Makefile | 2 +- tools/power/cpupower/po/zh_CN.po | 942 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 943 insertions(+), 1 deletion(-) create mode 100644 tools/power/cpupower/po/zh_CN.po (limited to 'tools') diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile index e2a48af6fa2a..c74c762002e8 100644 --- a/tools/power/cpupower/Makefile +++ b/tools/power/cpupower/Makefile @@ -57,7 +57,7 @@ LIB_MIN= 1 PACKAGE = cpupower PACKAGE_BUGREPORT = linux-pm@vger.kernel.org -LANGUAGES = de fr it cs pt ka +LANGUAGES = de fr it cs pt ka zh_CN # Directory definitions. These are default and most probably diff --git a/tools/power/cpupower/po/zh_CN.po b/tools/power/cpupower/po/zh_CN.po new file mode 100644 index 000000000000..0489abffb702 --- /dev/null +++ b/tools/power/cpupower/po/zh_CN.po @@ -0,0 +1,942 @@ +# Chinese Simplified translations for cpufrequtils package +# Copyright (C) 2004 THE PACKAGE'S COPYRIGHT HOLDER +# This file is distributed under the same license as the cpufrequtils package. +# +#, fuzzy +msgid "" +msgstr "" +"Project-Id-Version: cpufrequtils 006\n" +"Report-Msgid-Bugs-To: \n" +"POT-Creation-Date: 2011-03-08 17:03+0100\n" +"PO-Revision-Date: 2024-05-22 15:36+0000\n" +"Last-Translator: Kieran Moy \n" +"Language-Team: NONE\n" +"Language: zh_CN\n" +"MIME-Version: 1.0\n" +"Content-Type: text/plain; charset=UTF-8\n" +"Content-Transfer-Encoding: 8bit\n" +"X-Generator: Poedit 3.4.2\n" + +#: utils/idle_monitor/nhm_idle.c:36 +msgid "Processor Core C3" +msgstr "处理器 Core C3" + +#: utils/idle_monitor/nhm_idle.c:43 +msgid "Processor Core C6" +msgstr "处理器 Core C6" + +#: utils/idle_monitor/nhm_idle.c:51 +msgid "Processor Package C3" +msgstr "处理器套件 C3" + +#: utils/idle_monitor/nhm_idle.c:58 utils/idle_monitor/amd_fam14h_idle.c:70 +msgid "Processor Package C6" +msgstr "处理器套件 C6" + +#: utils/idle_monitor/snb_idle.c:33 +msgid "Processor Core C7" +msgstr "处理器 Core C7" + +#: utils/idle_monitor/snb_idle.c:40 +msgid "Processor Package C2" +msgstr "处理器套件 C2" + +#: utils/idle_monitor/snb_idle.c:47 +msgid "Processor Package C7" +msgstr "处理器套件 C7" + +#: utils/idle_monitor/amd_fam14h_idle.c:56 +msgid "Package in sleep state (PC1 or deeper)" +msgstr "Package in sleep state （PC1 或更深）" + +#: utils/idle_monitor/amd_fam14h_idle.c:63 +msgid "Processor Package C1" +msgstr "处理器套件 C1" + +#: utils/idle_monitor/amd_fam14h_idle.c:77 +msgid "North Bridge P1 boolean counter (returns 0 or 1)" +msgstr "北桥 P1 布尔计数器（返回 0 或 1）" + +#: utils/idle_monitor/mperf_monitor.c:35 +msgid "Processor Core not idle" +msgstr "处理器 Core不空闲" + +#: utils/idle_monitor/mperf_monitor.c:42 +msgid "Processor Core in an idle state" +msgstr "处理器 Core处于空闲状态" + +#: utils/idle_monitor/mperf_monitor.c:50 +msgid "Average Frequency (including boost) in MHz" +msgstr "平均频率（包括增加频率），单位 MHz" + +#: utils/idle_monitor/cpupower-monitor.c:66 +#, c-format +msgid "" +"cpupower monitor: [-h] [ [-t] | [-l] | [-m ,[] ] ] [-i " +"interval_sec | -c command ...]\n" +msgstr "" +"cpupower monitor：[-h] [ [-t] | [-l] | [-m ,[] ] ] [-i " +"interval_sec | -c command...]\n" + +#: utils/idle_monitor/cpupower-monitor.c:69 +#, c-format +msgid "" +"cpupower monitor: [-v] [-h] [ [-t] | [-l] | [-m ,[] ] ] [-i " +"interval_sec | -c command ...]\n" +msgstr "" +"cpupower monitor：[-v] [-h] [ [-t] | [-l] | [-m ,[] ] ] [-i " +"interval_sec | -c command...]\n" + +#: utils/idle_monitor/cpupower-monitor.c:71 +#, c-format +msgid "\t -v: be more verbose\n" +msgstr "-v：更详细\n" + +#: utils/idle_monitor/cpupower-monitor.c:73 +#, c-format +msgid "\t -h: print this help\n" +msgstr "-h：打印此帮助\n" + +#: utils/idle_monitor/cpupower-monitor.c:74 +#, c-format +msgid "\t -i: time interval to measure for in seconds (default 1)\n" +msgstr "-i：测量的时间间隔（以秒为单位）（默认 1）\n" + +#: utils/idle_monitor/cpupower-monitor.c:75 +#, c-format +msgid "\t -t: show CPU topology/hierarchy\n" +msgstr "-t：显示CPU拓扑/层次结构\n" + +#: utils/idle_monitor/cpupower-monitor.c:76 +#, c-format +msgid "\t -l: list available CPU sleep monitors (for use with -m)\n" +msgstr "-l：列出可用的 CPU 睡眠监视器（与 -m 一起使用）\n" + +#: utils/idle_monitor/cpupower-monitor.c:77 +#, c-format +msgid "\t -m: show specific CPU sleep monitors only (in same order)\n" +msgstr "-m：仅显示特定的CPU睡眠监视器（按相同顺序）\n" + +#: utils/idle_monitor/cpupower-monitor.c:79 +#, c-format +msgid "" +"only one of: -t, -l, -m are allowed\n" +"If none of them is passed," +msgstr "" +"仅允许以下之一：-t、-l、-m\n" +"如果都没有通过的话" + +#: utils/idle_monitor/cpupower-monitor.c:80 +#, c-format +msgid " all supported monitors are shown\n" +msgstr " 显示所有支持的显示器\n" + +#: utils/idle_monitor/cpupower-monitor.c:197 +#, c-format +msgid "Monitor %s, Counter %s has no count function. Implementation error\n" +msgstr "监视器 %s、计数器 %s 无计数功能。 执行错误\n" + +#: utils/idle_monitor/cpupower-monitor.c:207 +#, c-format +msgid " *is offline\n" +msgstr " *离线\n" + +#: utils/idle_monitor/cpupower-monitor.c:236 +#, c-format +msgid "%s: max monitor name length (%d) exceeded\n" +msgstr "%s：超出最大监视器名称长度 (%d)\n" + +#: utils/idle_monitor/cpupower-monitor.c:250 +#, c-format +msgid "No matching monitor found in %s, try -l option\n" +msgstr "在 %s 中找不到匹配的监视器，请尝试 -l 选项\n" + +#: utils/idle_monitor/cpupower-monitor.c:266 +#, c-format +msgid "Monitor \"%s\" (%d states) - Might overflow after %u s\n" +msgstr "监视器“%s”（%d 状态）- 可能会在 %u 秒后溢出\n" + +#: utils/idle_monitor/cpupower-monitor.c:319 +#, c-format +msgid "%s took %.5f seconds and exited with status %d\n" +msgstr "%s 用了 %.5f 秒并退出，状态为 %d\n" + +#: utils/idle_monitor/cpupower-monitor.c:406 +#, c-format +msgid "Cannot read number of available processors\n" +msgstr "无法读取可用处理器的数量\n" + +#: utils/idle_monitor/cpupower-monitor.c:417 +#, c-format +msgid "Available monitor %s needs root access\n" +msgstr "可用监视器 %s 需要 root 访问权限\n" + +#: utils/idle_monitor/cpupower-monitor.c:428 +#, c-format +msgid "No HW Cstate monitors found\n" +msgstr "未找到 HW Cstate 监视器\n" + +#: utils/cpupower.c:78 +#, c-format +msgid "cpupower [ -c cpulist ] subcommand [ARGS]\n" +msgstr "cpupower [ -c cpulist ] subcommand [ARGS]\n" + +#: utils/cpupower.c:79 +#, c-format +msgid "cpupower --version\n" +msgstr "cpupower --version\n" + +#: utils/cpupower.c:80 +#, c-format +msgid "Supported subcommands are:\n" +msgstr "支持的子命令有：\n" + +#: utils/cpupower.c:83 +#, c-format +msgid "" +"\n" +"Some subcommands can make use of the -c cpulist option.\n" +msgstr "" +"\n" +"某些子命令可以使用 -c cpulist 选项。\n" + +#: utils/cpupower.c:84 +#, c-format +msgid "Look at the general cpupower manpage how to use it\n" +msgstr "看看一般的cpupower manpage如何使用它\n" + +#: utils/cpupower.c:85 +#, c-format +msgid "and read up the subcommand's manpage whether it is supported.\n" +msgstr "并阅读子命令的manpage是否受支持。\n" + +#: utils/cpupower.c:86 +#, c-format +msgid "" +"\n" +"Use cpupower help subcommand for getting help for above subcommands.\n" +msgstr "" +"\n" +"使用 cpupower help subcommand获取上述子命令的帮助。\n" + +#: utils/cpupower.c:91 +#, c-format +msgid "Report errors and bugs to %s, please.\n" +msgstr "请向 %s 报告错误和错误。\n" + +#: utils/cpupower.c:114 +#, c-format +msgid "Error parsing cpu list\n" +msgstr "解析cpu列表时出错\n" + +#: utils/cpupower.c:172 +#, c-format +msgid "Subcommand %s needs root privileges\n" +msgstr "子命令 %s 需要 root 权限\n" + +#: utils/cpufreq-info.c:31 +#, c-format +msgid "Couldn't count the number of CPUs (%s: %s), assuming 1\n" +msgstr "无法计算 CPU 数量（%s：%s），假设为 1\n" + +#: utils/cpufreq-info.c:63 +#, c-format +msgid "" +" minimum CPU frequency - maximum CPU frequency - governor\n" +msgstr "最低 CPU 频率 - 最高 CPU 频率 - 调速器\n" + +#: utils/cpufreq-info.c:151 +#, c-format +msgid "Error while evaluating Boost Capabilities on CPU %d -- are you root?\n" +msgstr "评估 CPU %d 上的 Boost 功能时出错 - 您是 root 吗？\n" + +#. P state changes via MSR are identified via cpuid 80000007 +#. on Intel and AMD, but we assume boost capable machines can do that +#. if (cpuid_eax(0x80000000) >= 0x80000007 +#. && (cpuid_edx(0x80000007) & (1 << 7))) +#. +#: utils/cpufreq-info.c:161 +#, c-format +msgid " boost state support: \n" +msgstr " 升压状态支持：\n" + +#: utils/cpufreq-info.c:163 +#, c-format +msgid " Supported: %s\n" +msgstr " 支持：%s\n" + +#: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164 +msgid "yes" +msgstr "是" + +#: utils/cpufreq-info.c:163 utils/cpufreq-info.c:164 +msgid "no" +msgstr "不是" + +#: utils/cpufreq-info.c:164 +#, c-format +msgid " Active: %s\n" +msgstr " 活跃：%s\n" + +#: utils/cpufreq-info.c:177 +#, c-format +msgid " Boost States: %d\n" +msgstr " 提升状态：%d\n" + +#: utils/cpufreq-info.c:178 +#, c-format +msgid " Total States: %d\n" +msgstr " 状态总数：%d\n" + +#: utils/cpufreq-info.c:181 +#, c-format +msgid " Pstate-Pb%d: %luMHz (boost state)\n" +msgstr " Pstate-Pb%d：%luMHz（升压状态）\n" + +#: utils/cpufreq-info.c:184 +#, c-format +msgid " Pstate-P%d: %luMHz\n" +msgstr " Pstate-P%d：%luMHz\n" + +#: utils/cpufreq-info.c:211 +#, c-format +msgid " no or unknown cpufreq driver is active on this CPU\n" +msgstr " 该 CPU 上没有或未知的 cpufreq 驱动程序处于活动状态\n" + +#: utils/cpufreq-info.c:213 +#, c-format +msgid " driver: %s\n" +msgstr " 驱动程序：%s\n" + +#: utils/cpufreq-info.c:219 +#, c-format +msgid " CPUs which run at the same hardware frequency: " +msgstr " 以相同硬件频率运行的 CPU：" + +#: utils/cpufreq-info.c:230 +#, c-format +msgid " CPUs which need to have their frequency coordinated by software: " +msgstr " 需要通过软件协调频率的 CPU：" + +#: utils/cpufreq-info.c:241 +#, c-format +msgid " maximum transition latency: " +msgstr " 最大转换延迟：" + +#: utils/cpufreq-info.c:247 +#, c-format +msgid " hardware limits: " +msgstr " 硬件限制：" + +#: utils/cpufreq-info.c:256 +#, c-format +msgid " available frequency steps: " +msgstr " 可用频率范围：" + +#: utils/cpufreq-info.c:269 +#, c-format +msgid " available cpufreq governors: " +msgstr " 可用的cpufreq调节器：" + +#: utils/cpufreq-info.c:280 +#, c-format +msgid " current policy: frequency should be within " +msgstr " 当前政策：频率应在" + +#: utils/cpufreq-info.c:282 +#, c-format +msgid " and " +msgstr "和" + +#: utils/cpufreq-info.c:286 +#, c-format +msgid "" +"The governor \"%s\" may decide which speed to use\n" +" within this range.\n" +msgstr "" +"调速器“%s”可以决定使用哪种速度\n" +" 在这个范围内。\n" + +#: utils/cpufreq-info.c:293 +#, c-format +msgid " current CPU frequency is " +msgstr " 当前CPU频率是" + +#: utils/cpufreq-info.c:296 +#, c-format +msgid " (asserted by call to hardware)" +msgstr " （通过调用硬件来断言）" + +#: utils/cpufreq-info.c:304 +#, c-format +msgid " cpufreq stats: " +msgstr " cpu频率统计：" + +#: utils/cpufreq-info.c:472 +#, c-format +msgid "Usage: cpupower freqinfo [options]\n" +msgstr "用法：cpupower freqinfo [选项]\n" + +#: utils/cpufreq-info.c:473 utils/cpufreq-set.c:26 utils/cpupower-set.c:23 +#: utils/cpupower-info.c:22 utils/cpuidle-info.c:148 +#, c-format +msgid "Options:\n" +msgstr "选项：\n" + +#: utils/cpufreq-info.c:474 +#, c-format +msgid " -e, --debug Prints out debug information [default]\n" +msgstr " -e, --debug 打印出调试信息[默认]\n" + +#: utils/cpufreq-info.c:475 +#, c-format +msgid "" +" -f, --freq Get frequency the CPU currently runs at, according\n" +" to the cpufreq core *\n" +msgstr "" +" -f, --freq 获取CPU当前运行的频率，根据\n" +" 到 cpufreq 核心 *\n" + +#: utils/cpufreq-info.c:477 +#, c-format +msgid "" +" -w, --hwfreq Get frequency the CPU currently runs at, by reading\n" +" it from hardware (only available to root) *\n" +msgstr "" +" -w, --hwfreq 通过读取获取CPU当前运行的频率\n" +" 它来自硬件（仅适用于root）*\n" + +#: utils/cpufreq-info.c:479 +#, c-format +msgid "" +" -l, --hwlimits Determine the minimum and maximum CPU frequency " +"allowed *\n" +msgstr " -l, --hwlimits 确定允许的最小和最大 CPU 频率 *\n" + +#: utils/cpufreq-info.c:480 +#, c-format +msgid " -d, --driver Determines the used cpufreq kernel driver *\n" +msgstr " -d, --driver 确定使用的 cpufreq 内核驱动程序 *\n" + +#: utils/cpufreq-info.c:481 +#, c-format +msgid " -p, --policy Gets the currently used cpufreq policy *\n" +msgstr " -p, --policy 获取当前使用的cpufreq策略 *\n" + +#: utils/cpufreq-info.c:482 +#, c-format +msgid " -g, --governors Determines available cpufreq governors *\n" +msgstr " -g, --governors 确定可用的 cpufreq 调节器 *\n" + +#: utils/cpufreq-info.c:483 +#, c-format +msgid "" +" -r, --related-cpus Determines which CPUs run at the same hardware " +"frequency *\n" +msgstr " -r, --lated-cpus 确定哪些 CPU 以相同的硬件频率运行 *\n" + +#: utils/cpufreq-info.c:484 +#, c-format +msgid "" +" -a, --affected-cpus Determines which CPUs need to have their frequency\n" +" coordinated by software *\n" +msgstr "" +" -a, --affected-cpus 确定哪些 CPU 需要其频率\n" +" 由软件协调*\n" + +#: utils/cpufreq-info.c:486 +#, c-format +msgid " -s, --stats Shows cpufreq statistics if available\n" +msgstr " -s, --stats 显示 cpufreq 统计信息（如果有）\n" + +#: utils/cpufreq-info.c:487 +#, c-format +msgid "" +" -y, --latency Determines the maximum latency on CPU frequency " +"changes *\n" +msgstr " -y, --latency 确定 CPU 频率变化的最大延迟*\n" + +#: utils/cpufreq-info.c:488 +#, c-format +msgid " -b, --boost Checks for turbo or boost modes *\n" +msgstr " -b, --boost 检查 Turbo 或 boost 模式 *\n" + +#: utils/cpufreq-info.c:489 +#, c-format +msgid "" +" -o, --proc Prints out information like provided by the /proc/" +"cpufreq\n" +" interface in 2.4. and early 2.6. kernels\n" +msgstr "" +" -o, --proc 打印 /proc/cpufreq 提供的信息\n" +" 2.4 中的接口。 以及 2.6 之前的内核。\n" + +#: utils/cpufreq-info.c:491 +#, c-format +msgid "" +" -m, --human human-readable output for the -f, -w, -s and -y " +"parameters\n" +msgstr " -m, -- human -f, -w, -s 和 -y 参数的人类可读输出\n" + +#: utils/cpufreq-info.c:492 utils/cpuidle-info.c:152 +#, c-format +msgid " -h, --help Prints out this screen\n" +msgstr " -h, --help 打印此屏幕\n" + +#: utils/cpufreq-info.c:495 +#, c-format +msgid "" +"If no argument or only the -c, --cpu parameter is given, debug output " +"about\n" +"cpufreq is printed which is useful e.g. for reporting bugs.\n" +msgstr "" +"screen如果没有参数或仅给出了 -c, --cpu 参数，则调试输出有关\n" +"cpufreq 被打印出来，这很有用，例如 用于报告错误。\n" + +#: utils/cpufreq-info.c:497 +#, c-format +msgid "" +"For the arguments marked with *, omitting the -c or --cpu argument is\n" +"equivalent to setting it to zero\n" +msgstr "" +"对于标有 * 的参数，省略 -c 或 --cpu 参数是\n" +"相当于将其设置为零\n" + +#: utils/cpufreq-info.c:580 +#, c-format +msgid "" +"The argument passed to this tool can't be combined with passing a --cpu " +"argument\n" +msgstr "传递给此工具的参数不能与传递 --cpu 参数结合使用\n" + +#: utils/cpufreq-info.c:596 +#, c-format +msgid "" +"You can't specify more than one --cpu parameter and/or\n" +"more than one output-specific argument\n" +msgstr "" +"您不能指定多个 --cpu 参数和/或\n" +"多个特定于输出的参数\n" + +#: utils/cpufreq-info.c:600 utils/cpufreq-set.c:82 utils/cpupower-set.c:42 +#: utils/cpupower-info.c:42 utils/cpuidle-info.c:213 +#, c-format +msgid "invalid or unknown argument\n" +msgstr "无效或未知的参数\n" + +#: utils/cpufreq-info.c:617 +#, c-format +msgid "couldn't analyze CPU %d as it doesn't seem to be present\n" +msgstr "无法分析 CPU %d，因为它似乎不存在\n" + +#: utils/cpufreq-info.c:620 utils/cpupower-info.c:142 +#, c-format +msgid "analyzing CPU %d:\n" +msgstr "分析 CPU %d：\n" + +#: utils/cpufreq-set.c:25 +#, c-format +msgid "Usage: cpupower frequency-set [options]\n" +msgstr "用法：cpupower frequency-set [选项]\n" + +#: utils/cpufreq-set.c:27 +#, c-format +msgid "" +" -d FREQ, --min FREQ new minimum CPU frequency the governor may " +"select\n" +msgstr " -d FREQ, --min FREQ 调控器可以选择的新的最小 CPU 频率\n" + +#: utils/cpufreq-set.c:28 +#, c-format +msgid "" +" -u FREQ, --max FREQ new maximum CPU frequency the governor may " +"select\n" +msgstr " -u FREQ, --max FREQ 调控器可以选择的新的最大 CPU 频率\n" + +#: utils/cpufreq-set.c:29 +#, c-format +msgid " -g GOV, --governor GOV new cpufreq governor\n" +msgstr " -g GOV, --governor GOV 新的 cpufreq 调节器\n" + +#: utils/cpufreq-set.c:30 +#, c-format +msgid "" +" -f FREQ, --freq FREQ specific frequency to be set. Requires " +"userspace\n" +" governor to be available and loaded\n" +msgstr "" +" -f FREQ, --freq FREQ 要设置的特定频率。 需要用户空间\n" +" 调速器可用并已加载\n" + +#: utils/cpufreq-set.c:32 +#, c-format +msgid " -r, --related Switches all hardware-related CPUs\n" +msgstr " -r, --related 切换所有与硬件相关的CPU\n" + +#: utils/cpufreq-set.c:33 utils/cpupower-set.c:28 utils/cpupower-info.c:27 +#, c-format +msgid " -h, --help Prints out this screen\n" +msgstr " -h, --help 打印此屏幕\n" + +#: utils/cpufreq-set.c:35 +#, c-format +msgid "" +"Notes:\n" +"1. Omitting the -c or --cpu argument is equivalent to setting it to " +"\"all\"\n" +msgstr "" +"注意：\n" +"1.省略-c或--cpu参数相当于将其设置为“all”\n" + +#: utils/cpufreq-set.c:37 +#, c-format +msgid "" +"2. The -f FREQ, --freq FREQ parameter cannot be combined with any other " +"parameter\n" +" except the -c CPU, --cpu CPU parameter\n" +"3. FREQuencies can be passed in Hz, kHz (default), MHz, GHz, or THz\n" +" by postfixing the value with the wanted unit name, without any space\n" +" (FREQuency in kHz =^ Hz * 0.001 =^ MHz * 1000 =^ GHz * 1000000).\n" +msgstr "" +"2. -f FREQ、--freq FREQ参数不能与任何其他参数组合使用\n" +" 除了 -c CPU、--cpu CPU 参数\n" +"3. 频率可以以 Hz、kHz（默认）、MHz、GHz 或 THz 为单位传递\n" +" 通过在值后面添加所需的单位名称，不带任何空格\n" +" （以 kHz 为单位的频率 =^ Hz * 0.001 =^ MHz * 1000 =^ GHz * 1000000）。\n" + +#: utils/cpufreq-set.c:57 +#, c-format +msgid "" +"Error setting new values. Common errors:\n" +"- Do you have proper administration rights? (super-user?)\n" +"- Is the governor you requested available and modprobed?\n" +"- Trying to set an invalid policy?\n" +"- Trying to set a specific frequency, but userspace governor is not " +"available,\n" +" for example because of hardware which cannot be set to a specific " +"frequency\n" +" or because the userspace governor isn't loaded?\n" +msgstr "" +"设置新值时出错。 常见错误：\n" +"- 您有适当的管理权吗？ （超级用户？）\n" +"- 您请求的调控器是否可用并已进行 modprobed？\n" +"- 尝试设置无效的策略？\n" +"- 尝试设置特定频率，但用户空间调控器不可用，\n" +" 例如由于硬件无法设置为特定频率\n" +" 或者因为用户空间调控器未加载？\n" + +#: utils/cpufreq-set.c:170 +#, c-format +msgid "wrong, unknown or unhandled CPU?\n" +msgstr "错误、未知或未处理的CPU？\n" + +#: utils/cpufreq-set.c:302 +#, c-format +msgid "" +"the -f/--freq parameter cannot be combined with -d/--min, -u/--max or\n" +"-g/--governor parameters\n" +msgstr "" +"-f/--freq 参数不能与 -d/--min、-u/--max 或\n" +"-g/--调速器参数\n" + +#: utils/cpufreq-set.c:308 +#, c-format +msgid "" +"At least one parameter out of -f/--freq, -d/--min, -u/--max, and\n" +"-g/--governor must be passed\n" +msgstr "" +"-f/--freq、-d/--min、-u/--max 和 -f/--freq 中的至少一个参数\n" +"-g/--governor 必须通过\n" + +#: utils/cpufreq-set.c:347 +#, c-format +msgid "Setting cpu: %d\n" +msgstr "设置CPU：%d\n" + +#: utils/cpupower-set.c:22 +#, c-format +msgid "Usage: cpupower set [ -b val ] [ -m val ] [ -s val ]\n" +msgstr "用法： cpupower set [ -b val ] [ -m val ] [ -s val ]\n" + +#: utils/cpupower-set.c:24 +#, c-format +msgid "" +" -b, --perf-bias [VAL] Sets CPU's power vs performance policy on some\n" +" Intel models [0-15], see manpage for details\n" +msgstr "" +" -b, --perf-bias [VAL] 设置 CPU 的功耗与性能策略\n" +" Intel 型号 [0-15]，请参阅manpage了解详细信息\n" + +#: utils/cpupower-set.c:26 +#, c-format +msgid "" +" -m, --sched-mc [VAL] Sets the kernel's multi core scheduler policy.\n" +msgstr " -m, --sched-mc [VAL] 设置内核的多核调度程序策略。\n" + +#: utils/cpupower-set.c:27 +#, c-format +msgid "" +" -s, --sched-smt [VAL] Sets the kernel's thread sibling scheduler " +"policy.\n" +msgstr " -s, --sched-smt [VAL] 设置内核的线程同级调度程序策略。\n" + +#: utils/cpupower-set.c:80 +#, c-format +msgid "--perf-bias param out of range [0-%d]\n" +msgstr "--perf-bias 参数超出范围 [0-%d]\n" + +#: utils/cpupower-set.c:91 +#, c-format +msgid "--sched-mc param out of range [0-%d]\n" +msgstr "--sched-mc 参数超出范围 [0-%d]\n" + +#: utils/cpupower-set.c:102 +#, c-format +msgid "--sched-smt param out of range [0-%d]\n" +msgstr "--sched-smt 参数超出范围 [0-%d]\n" + +#: utils/cpupower-set.c:121 +#, c-format +msgid "Error setting sched-mc %s\n" +msgstr "设置 sched-mc %s 时出错\n" + +#: utils/cpupower-set.c:127 +#, c-format +msgid "Error setting sched-smt %s\n" +msgstr "设置 sched-smt %s 时出错\n" + +#: utils/cpupower-set.c:146 +#, c-format +msgid "Error setting perf-bias value on CPU %d\n" +msgstr "在 CPU %d 上设置性能偏差值时出错\n" + +#: utils/cpupower-info.c:21 +#, c-format +msgid "Usage: cpupower info [ -b ] [ -m ] [ -s ]\n" +msgstr "用法：cpupower info [-b][-m][-s]\n" + +#: utils/cpupower-info.c:23 +#, c-format +msgid "" +" -b, --perf-bias Gets CPU's power vs performance policy on some\n" +" Intel models [0-15], see manpage for details\n" +msgstr "" +" -b, --perf-bias 获取 CPU 在某些方面的功耗与性能策略\n" +" Intel 型号 [0-15]，请参阅联机帮助页了解详细信" +"息\n" + +#: utils/cpupower-info.c:25 +#, c-format +msgid " -m, --sched-mc Gets the kernel's multi core scheduler policy.\n" +msgstr " -m, --sched-mc 获取内核的多核调度程序策略。\n" + +#: utils/cpupower-info.c:26 +#, c-format +msgid "" +" -s, --sched-smt Gets the kernel's thread sibling scheduler policy.\n" +msgstr " -s, --sched-smt 获取内核的线程同级调度程序策略。\n" + +#: utils/cpupower-info.c:28 +#, c-format +msgid "" +"\n" +"Passing no option will show all info, by default only on core 0\n" +msgstr "" +"\n" +"不传递任何选项将显示所有信息，默认情况下仅在核心 0 上\n" + +#: utils/cpupower-info.c:102 +#, c-format +msgid "System's multi core scheduler setting: " +msgstr "系统的多核调度器设置：" + +#. if sysfs file is missing it's: errno == ENOENT +#: utils/cpupower-info.c:105 utils/cpupower-info.c:114 +#, c-format +msgid "not supported\n" +msgstr "不支持\n" + +#: utils/cpupower-info.c:111 +#, c-format +msgid "System's thread sibling scheduler setting: " +msgstr "系统的线程兄调度程序设置：" + +#: utils/cpupower-info.c:126 +#, c-format +msgid "Intel's performance bias setting needs root privileges\n" +msgstr "Intel的性能偏差设置需要root权限\n" + +#: utils/cpupower-info.c:128 +#, c-format +msgid "System does not support Intel's performance bias setting\n" +msgstr "系统不支持Intel的性能偏差设置\n" + +#: utils/cpupower-info.c:147 +#, c-format +msgid "Could not read perf-bias value\n" +msgstr "无法读取性能偏差值\n" + +#: utils/cpupower-info.c:150 +#, c-format +msgid "perf-bias: %d\n" +msgstr "性能偏差：%d\n" + +#: utils/cpuidle-info.c:28 +#, c-format +msgid "Analyzing CPU %d:\n" +msgstr "正在分析 CPU %d：\n" + +#: utils/cpuidle-info.c:32 +#, c-format +msgid "CPU %u: No idle states\n" +msgstr "CPU %u：无空闲状态\n" + +#: utils/cpuidle-info.c:36 +#, c-format +msgid "CPU %u: Can't read idle state info\n" +msgstr "CPU %u：无法读取空闲状态信息\n" + +#: utils/cpuidle-info.c:41 +#, c-format +msgid "Could not determine max idle state %u\n" +msgstr "无法确定最大空闲状态 %u\n" + +#: utils/cpuidle-info.c:46 +#, c-format +msgid "Number of idle states: %d\n" +msgstr "空闲状态数：%d\n" + +#: utils/cpuidle-info.c:48 +#, c-format +msgid "Available idle states:" +msgstr "可用的空闲状态：" + +#: utils/cpuidle-info.c:71 +#, c-format +msgid "Flags/Description: %s\n" +msgstr "标志/描述：%s\n" + +#: utils/cpuidle-info.c:74 +#, c-format +msgid "Latency: %lu\n" +msgstr "延迟：%lu\n" + +#: utils/cpuidle-info.c:76 +#, c-format +msgid "Usage: %lu\n" +msgstr "用法：%lu\n" + +#: utils/cpuidle-info.c:78 +#, c-format +msgid "Duration: %llu\n" +msgstr "持续时间：%llu\n" + +#: utils/cpuidle-info.c:90 +#, c-format +msgid "Could not determine cpuidle driver\n" +msgstr "无法确定 cpuidle 驱动程序\n" + +#: utils/cpuidle-info.c:94 +#, c-format +msgid "CPUidle driver: %s\n" +msgstr "CPU 空闲驱动程序：%s\n" + +#: utils/cpuidle-info.c:99 +#, c-format +msgid "Could not determine cpuidle governor\n" +msgstr "无法确定 cpuidle 调控器\n" + +#: utils/cpuidle-info.c:103 +#, c-format +msgid "CPUidle governor: %s\n" +msgstr "CPU 空闲调节器：%s\n" + +#: utils/cpuidle-info.c:122 +#, c-format +msgid "CPU %u: Can't read C-state info\n" +msgstr "CPU %u：无法读取 C 状态信息\n" + +#. printf("Cstates: %d\n", cstates); +#: utils/cpuidle-info.c:127 +#, c-format +msgid "active state: C0\n" +msgstr "活动状态: C0\n" + +#: utils/cpuidle-info.c:128 +#, c-format +msgid "max_cstate: C%u\n" +msgstr "最大c状态: C%u\n" + +#: utils/cpuidle-info.c:129 +#, c-format +msgid "maximum allowed latency: %lu usec\n" +msgstr "允许的最大延迟：%lu usec\n" + +#: utils/cpuidle-info.c:130 +#, c-format +msgid "states:\t\n" +msgstr "状态：\t\n" + +#: utils/cpuidle-info.c:132 +#, c-format +msgid " C%d: type[C%d] " +msgstr " C%d: 类型[C%d]" + +#: utils/cpuidle-info.c:134 +#, c-format +msgid "promotion[--] demotion[--] " +msgstr "晋升[--] 降级[--]" + +#: utils/cpuidle-info.c:135 +#, c-format +msgid "latency[%03lu] " +msgstr "延迟[%03lu]" + +#: utils/cpuidle-info.c:137 +#, c-format +msgid "usage[%08lu] " +msgstr "使用情况[%08lu]" + +#: utils/cpuidle-info.c:139 +#, c-format +msgid "duration[%020Lu] \n" +msgstr "持续时间[%020Lu]\n" + +#: utils/cpuidle-info.c:147 +#, c-format +msgid "Usage: cpupower idleinfo [options]\n" +msgstr "用法：cpupower idleinfo [选项]\n" + +#: utils/cpuidle-info.c:149 +#, c-format +msgid " -s, --silent Only show general C-state information\n" +msgstr " -s, --silent 只显示一般C状态信息\n" + +#: utils/cpuidle-info.c:150 +#, c-format +msgid "" +" -o, --proc Prints out information like provided by the /proc/" +"acpi/processor/*/power\n" +" interface in older kernels\n" +msgstr "" +" -o, --proc 打印 /proc/acpi/processor/*/power 提供的信息\n" +" 旧内核中的接口\n" + +#: utils/cpuidle-info.c:209 +#, c-format +msgid "You can't specify more than one output-specific argument\n" +msgstr "您不能指定多个特定于输出的参数\n" + +#~ msgid "" +#~ " -c CPU, --cpu CPU CPU number which information shall be determined " +#~ "about\n" +#~ msgstr "" +#~ " -c CPU, --cpu CPU Numéro du CPU pour lequel l'information sera " +#~ "affichée\n" + +#~ msgid "" +#~ " -c CPU, --cpu CPU number of CPU where cpufreq settings shall be " +#~ "modified\n" +#~ msgstr "" +#~ " -c CPU, --cpu CPU numéro du CPU à prendre en compte pour les\n" +#~ " changements\n" -- cgit v1.2.3 From 0161bd38c24312853ed5ae9a425a1c41c4ac674a Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Thu, 10 Oct 2024 00:17:57 +0200 Subject: powerpc/vdso: Flag VDSO64 entry points as functions On powerpc64 as shown below by readelf, vDSO functions symbols have type NOTYPE. $ powerpc64-linux-gnu-readelf -a arch/powerpc/kernel/vdso/vdso64.so.dbg ELF Header: Magic: 7f 45 4c 46 02 02 01 00 00 00 00 00 00 00 00 00 Class: ELF64 Data: 2's complement, big endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: DYN (Shared object file) Machine: PowerPC64 Version: 0x1 ... Symbol table '.dynsym' contains 12 entries: Num: Value Size Type Bind Vis Ndx Name ... 1: 0000000000000524 84 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15 ... 4: 0000000000000000 0 OBJECT GLOBAL DEFAULT ABS LINUX_2.6.15 5: 00000000000006c0 48 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15 Symbol table '.symtab' contains 56 entries: Num: Value Size Type Bind Vis Ndx Name ... 45: 0000000000000000 0 OBJECT GLOBAL DEFAULT ABS LINUX_2.6.15 46: 00000000000006c0 48 NOTYPE GLOBAL DEFAULT 8 __kernel_getcpu 47: 0000000000000524 84 NOTYPE GLOBAL DEFAULT 8 __kernel_clock_getres To overcome that, commit ba83b3239e65 ("selftests: vDSO: fix vDSO symbols lookup for powerpc64") was applied to have selftests also look for NOTYPE symbols, but the correct fix should be to flag VDSO entry points as functions. The original commit that brought VDSO support into powerpc/64 has the following explanation: Note that the symbols exposed by the vDSO aren't "normal" function symbols, apps can't be expected to link against them directly, the vDSO's are both seen as if they were linked at 0 and the symbols just contain offsets to the various functions. This is done on purpose to avoid a relocation step (ppc64 functions normally have descriptors with abs addresses in them). When glibc uses those functions, it's expected to use it's own trampolines that know how to reach them. The descriptors it's talking about are the OPD function descriptors used on ABI v1 (big endian). But it would be more correct for a text symbol to have type function, even if there's no function descriptor for it. glibc has a special case already for handling the VDSO symbols which creates a fake opd pointing at the kernel symbol. So changing the VDSO symbol type to function shouldn't affect that. For ABI v2, there is no function descriptors and VDSO functions can safely have function type. So lets flag VDSO entry points as functions and revert the selftest change. Link: https://github.com/mpe/linux-fullhistory/commit/5f2dd691b62da9d9cc54b938f8b29c22c93cb805 Fixes: ba83b3239e65 ("selftests: vDSO: fix vDSO symbols lookup for powerpc64") Signed-off-by: Christophe Leroy Reviewed-By: Segher Boessenkool Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/b6ad2f1ee9887af3ca5ecade2a56f4acda517a85.1728512263.git.christophe.leroy@csgroup.eu --- tools/testing/selftests/vDSO/parse_vdso.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/vDSO/parse_vdso.c b/tools/testing/selftests/vDSO/parse_vdso.c index 7dd5668ea8a6..28f35620c499 100644 --- a/tools/testing/selftests/vDSO/parse_vdso.c +++ b/tools/testing/selftests/vDSO/parse_vdso.c @@ -222,8 +222,7 @@ void *vdso_sym(const char *version, const char *name) ELF(Sym) *sym = &vdso_info.symtab[chain]; /* Check for a defined global or weak function w/ right name. */ - if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC && - ELF64_ST_TYPE(sym->st_info) != STT_NOTYPE) + if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC) continue; if (ELF64_ST_BIND(sym->st_info) != STB_GLOBAL && ELF64_ST_BIND(sym->st_info) != STB_WEAK) -- cgit v1.2.3 From 27879e8cb6b0fdb5cdcd76685f290729309711c6 Mon Sep 17 00:00:00 2001 From: Yang Shi Date: Tue, 1 Oct 2024 15:52:20 -0700 Subject: selftests: arm64: add hugetlb mte tests The tests cover mmap, mprotect hugetlb with MTE prot and COW. Signed-off-by: Yang Shi Link: https://lore.kernel.org/r/20241001225220.271178-2-yang@os.amperecomputing.com Signed-off-by: Catalin Marinas --- .../selftests/arm64/mte/check_hugetlb_options.c | 285 +++++++++++++++++++++ 1 file changed, 285 insertions(+) create mode 100644 tools/testing/selftests/arm64/mte/check_hugetlb_options.c (limited to 'tools') diff --git a/tools/testing/selftests/arm64/mte/check_hugetlb_options.c b/tools/testing/selftests/arm64/mte/check_hugetlb_options.c new file mode 100644 index 000000000000..303260a6dc65 --- /dev/null +++ b/tools/testing/selftests/arm64/mte/check_hugetlb_options.c @@ -0,0 +1,285 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2024 Ampere Computing LLC + +#define _GNU_SOURCE + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "kselftest.h" +#include "mte_common_util.h" +#include "mte_def.h" + +#define TAG_CHECK_ON 0 +#define TAG_CHECK_OFF 1 + +static unsigned long default_huge_page_size(void) +{ + unsigned long hps = 0; + char *line = NULL; + size_t linelen = 0; + FILE *f = fopen("/proc/meminfo", "r"); + + if (!f) + return 0; + while (getline(&line, &linelen, f) > 0) { + if (sscanf(line, "Hugepagesize: %lu kB", &hps) == 1) { + hps <<= 10; + break; + } + } + + free(line); + fclose(f); + return hps; +} + +static bool is_hugetlb_allocated(void) +{ + unsigned long hps = 0; + char *line = NULL; + size_t linelen = 0; + FILE *f = fopen("/proc/meminfo", "r"); + + if (!f) + return false; + while (getline(&line, &linelen, f) > 0) { + if (sscanf(line, "Hugetlb: %lu kB", &hps) == 1) { + hps <<= 10; + break; + } + } + + free(line); + fclose(f); + + if (hps > 0) + return true; + + return false; +} + +static void write_sysfs(char *str, unsigned long val) +{ + FILE *f; + + f = fopen(str, "w"); + if (!f) { + ksft_print_msg("ERR: missing %s\n", str); + return; + } + fprintf(f, "%lu", val); + fclose(f); +} + +static void allocate_hugetlb() +{ + write_sysfs("/proc/sys/vm/nr_hugepages", 2); +} + +static void free_hugetlb() +{ + write_sysfs("/proc/sys/vm/nr_hugepages", 0); +} + +static int check_child_tag_inheritance(char *ptr, int size, int mode) +{ + int i, parent_tag, child_tag, fault, child_status; + pid_t child; + + parent_tag = MT_FETCH_TAG((uintptr_t)ptr); + fault = 0; + + child = fork(); + if (child == -1) { + ksft_print_msg("FAIL: child process creation\n"); + return KSFT_FAIL; + } else if (child == 0) { + mte_initialize_current_context(mode, (uintptr_t)ptr, size); + /* Do copy on write */ + memset(ptr, '1', size); + mte_wait_after_trig(); + if (cur_mte_cxt.fault_valid == true) { + fault = 1; + goto check_child_tag_inheritance_err; + } + for (i = 0; i < size; i += MT_GRANULE_SIZE) { + child_tag = MT_FETCH_TAG((uintptr_t)(mte_get_tag_address(ptr + i))); + if (parent_tag != child_tag) { + ksft_print_msg("FAIL: child mte tag (%d) mismatch\n", i); + fault = 1; + goto check_child_tag_inheritance_err; + } + } +check_child_tag_inheritance_err: + _exit(fault); + } + /* Wait for child process to terminate */ + wait(&child_status); + if (WIFEXITED(child_status)) + fault = WEXITSTATUS(child_status); + else + fault = 1; + return (fault) ? KSFT_FAIL : KSFT_PASS; +} + +static int check_mte_memory(char *ptr, int size, int mode, int tag_check) +{ + mte_initialize_current_context(mode, (uintptr_t)ptr, size); + memset(ptr, '1', size); + mte_wait_after_trig(); + if (cur_mte_cxt.fault_valid == true) + return KSFT_FAIL; + + return KSFT_PASS; +} + +static int check_hugetlb_memory_mapping(int mem_type, int mode, int mapping, int tag_check) +{ + char *ptr, *map_ptr; + int result; + unsigned long map_size; + + map_size = default_huge_page_size(); + + mte_switch_mode(mode, MTE_ALLOW_NON_ZERO_TAG); + map_ptr = (char *)mte_allocate_memory(map_size, mem_type, mapping, false); + if (check_allocated_memory(map_ptr, map_size, mem_type, false) != KSFT_PASS) + return KSFT_FAIL; + + mte_initialize_current_context(mode, (uintptr_t)map_ptr, map_size); + /* Only mte enabled memory will allow tag insertion */ + ptr = mte_insert_tags((void *)map_ptr, map_size); + if (!ptr || cur_mte_cxt.fault_valid == true) { + ksft_print_msg("FAIL: Insert tags on anonymous mmap memory\n"); + munmap((void *)map_ptr, map_size); + return KSFT_FAIL; + } + result = check_mte_memory(ptr, map_size, mode, tag_check); + mte_clear_tags((void *)ptr, map_size); + mte_free_memory((void *)map_ptr, map_size, mem_type, false); + if (result == KSFT_FAIL) + return KSFT_FAIL; + + return KSFT_PASS; +} + +static int check_clear_prot_mte_flag(int mem_type, int mode, int mapping) +{ + char *map_ptr; + int prot_flag, result; + unsigned long map_size; + + prot_flag = PROT_READ | PROT_WRITE; + mte_switch_mode(mode, MTE_ALLOW_NON_ZERO_TAG); + map_size = default_huge_page_size(); + map_ptr = (char *)mte_allocate_memory_tag_range(map_size, mem_type, mapping, + 0, 0); + if (check_allocated_memory_range(map_ptr, map_size, mem_type, + 0, 0) != KSFT_PASS) + return KSFT_FAIL; + /* Try to clear PROT_MTE property and verify it by tag checking */ + if (mprotect(map_ptr, map_size, prot_flag)) { + mte_free_memory_tag_range((void *)map_ptr, map_size, mem_type, + 0, 0); + ksft_print_msg("FAIL: mprotect not ignoring clear PROT_MTE property\n"); + return KSFT_FAIL; + } + result = check_mte_memory(map_ptr, map_size, mode, TAG_CHECK_ON); + mte_free_memory_tag_range((void *)map_ptr, map_size, mem_type, 0, 0); + if (result != KSFT_PASS) + return KSFT_FAIL; + + return KSFT_PASS; +} + +static int check_child_hugetlb_memory_mapping(int mem_type, int mode, int mapping) +{ + char *ptr; + int result; + unsigned long map_size; + + map_size = default_huge_page_size(); + + mte_switch_mode(mode, MTE_ALLOW_NON_ZERO_TAG); + ptr = (char *)mte_allocate_memory_tag_range(map_size, mem_type, mapping, + 0, 0); + if (check_allocated_memory_range(ptr, map_size, mem_type, + 0, 0) != KSFT_PASS) + return KSFT_FAIL; + result = check_child_tag_inheritance(ptr, map_size, mode); + mte_free_memory_tag_range((void *)ptr, map_size, mem_type, 0, 0); + if (result == KSFT_FAIL) + return result; + + return KSFT_PASS; +} + +int main(int argc, char *argv[]) +{ + int err; + + err = mte_default_setup(); + if (err) + return err; + + /* Register signal handlers */ + mte_register_signal(SIGBUS, mte_default_handler); + mte_register_signal(SIGSEGV, mte_default_handler); + + allocate_hugetlb(); + + if (!is_hugetlb_allocated()) { + ksft_print_msg("ERR: Unable allocate hugetlb pages\n"); + return KSFT_FAIL; + } + + /* Set test plan */ + ksft_set_plan(12); + + mte_enable_pstate_tco(); + + evaluate_test(check_hugetlb_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE | MAP_HUGETLB, TAG_CHECK_OFF), + "Check hugetlb memory with private mapping, sync error mode, mmap memory and tag check off\n"); + + mte_disable_pstate_tco(); + evaluate_test(check_hugetlb_memory_mapping(USE_MMAP, MTE_NONE_ERR, MAP_PRIVATE | MAP_HUGETLB, TAG_CHECK_OFF), + "Check hugetlb memory with private mapping, no error mode, mmap memory and tag check off\n"); + + evaluate_test(check_hugetlb_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE | MAP_HUGETLB, TAG_CHECK_ON), + "Check hugetlb memory with private mapping, sync error mode, mmap memory and tag check on\n"); + evaluate_test(check_hugetlb_memory_mapping(USE_MPROTECT, MTE_SYNC_ERR, MAP_PRIVATE | MAP_HUGETLB, TAG_CHECK_ON), + "Check hugetlb memory with private mapping, sync error mode, mmap/mprotect memory and tag check on\n"); + evaluate_test(check_hugetlb_memory_mapping(USE_MMAP, MTE_ASYNC_ERR, MAP_PRIVATE | MAP_HUGETLB, TAG_CHECK_ON), + "Check hugetlb memory with private mapping, async error mode, mmap memory and tag check on\n"); + evaluate_test(check_hugetlb_memory_mapping(USE_MPROTECT, MTE_ASYNC_ERR, MAP_PRIVATE | MAP_HUGETLB, TAG_CHECK_ON), + "Check hugetlb memory with private mapping, async error mode, mmap/mprotect memory and tag check on\n"); + + evaluate_test(check_clear_prot_mte_flag(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE | MAP_HUGETLB), + "Check clear PROT_MTE flags with private mapping, sync error mode and mmap memory\n"); + evaluate_test(check_clear_prot_mte_flag(USE_MPROTECT, MTE_SYNC_ERR, MAP_PRIVATE | MAP_HUGETLB), + "Check clear PROT_MTE flags with private mapping and sync error mode and mmap/mprotect memory\n"); + + evaluate_test(check_child_hugetlb_memory_mapping(USE_MMAP, MTE_SYNC_ERR, MAP_PRIVATE | MAP_HUGETLB), + "Check child hugetlb memory with private mapping, precise mode and mmap memory\n"); + evaluate_test(check_child_hugetlb_memory_mapping(USE_MMAP, MTE_ASYNC_ERR, MAP_PRIVATE | MAP_HUGETLB), + "Check child hugetlb memory with private mapping, precise mode and mmap memory\n"); + evaluate_test(check_child_hugetlb_memory_mapping(USE_MPROTECT, MTE_SYNC_ERR, MAP_PRIVATE | MAP_HUGETLB), + "Check child hugetlb memory with private mapping, precise mode and mmap/mprotect memory\n"); + evaluate_test(check_child_hugetlb_memory_mapping(USE_MPROTECT, MTE_ASYNC_ERR, MAP_PRIVATE | MAP_HUGETLB), + "Check child hugetlb memory with private mapping, precise mode and mmap/mprotect memory\n"); + + mte_restore_setup(); + free_hugetlb(); + ksft_print_cnts(); + return ksft_get_fail_cnt() == 0 ? KSFT_PASS : KSFT_FAIL; +} -- cgit v1.2.3 From 48f8d9cef766f8ed4bbccc0d759710262d34f40b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 5 Oct 2024 01:17:18 +0100 Subject: kselftest/arm64: Validate that GCS push and write permissions work Add trivial assembly programs which give themselves the appropriate permissions and then execute GCSPUSHM and GCSSTR, they will report errors by generating signals on the non-permitted instructions. Not using libc minimises the interaction with any policy set for the system but we skip on failure to get the permissions in case the system is locked down to make them inaccessible. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241005-arm64-gcs-test-flags-v1-1-03cb9786c5cd@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/gcs/.gitignore | 2 + tools/testing/selftests/arm64/gcs/Makefile | 8 ++- tools/testing/selftests/arm64/gcs/gcspushm.S | 96 +++++++++++++++++++++++++++ tools/testing/selftests/arm64/gcs/gcsstr.S | 99 ++++++++++++++++++++++++++++ 4 files changed, 204 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/arm64/gcs/gcspushm.S create mode 100644 tools/testing/selftests/arm64/gcs/gcsstr.S (limited to 'tools') diff --git a/tools/testing/selftests/arm64/gcs/.gitignore b/tools/testing/selftests/arm64/gcs/.gitignore index 1e8d1f6b27f2..bbb8e40a7e52 100644 --- a/tools/testing/selftests/arm64/gcs/.gitignore +++ b/tools/testing/selftests/arm64/gcs/.gitignore @@ -3,3 +3,5 @@ libc-gcs gcs-locking gcs-stress gcs-stress-thread +gcspushm +gcsstr diff --git a/tools/testing/selftests/arm64/gcs/Makefile b/tools/testing/selftests/arm64/gcs/Makefile index d8b06ca51e22..d2f3497a9103 100644 --- a/tools/testing/selftests/arm64/gcs/Makefile +++ b/tools/testing/selftests/arm64/gcs/Makefile @@ -6,7 +6,7 @@ # nolibc. # -TEST_GEN_PROGS := basic-gcs libc-gcs gcs-locking gcs-stress +TEST_GEN_PROGS := basic-gcs libc-gcs gcs-locking gcs-stress gcspushm gcsstr TEST_GEN_PROGS_EXTENDED := gcs-stress-thread LDLIBS+=-lpthread @@ -22,3 +22,9 @@ $(OUTPUT)/basic-gcs: basic-gcs.c $(OUTPUT)/gcs-stress-thread: gcs-stress-thread.S $(CC) -nostdlib $^ -o $@ + +$(OUTPUT)/gcspushm: gcspushm.S + $(CC) -nostdlib $^ -o $@ + +$(OUTPUT)/gcsstr: gcsstr.S + $(CC) -nostdlib $^ -o $@ diff --git a/tools/testing/selftests/arm64/gcs/gcspushm.S b/tools/testing/selftests/arm64/gcs/gcspushm.S new file mode 100644 index 000000000000..bbe17c1325ac --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/gcspushm.S @@ -0,0 +1,96 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright 2024 Arm Limited +// +// Give ourselves GCS push permissions then use them + +#include + +/* Shadow Stack/Guarded Control Stack interface */ +#define PR_GET_SHADOW_STACK_STATUS 74 +#define PR_SET_SHADOW_STACK_STATUS 75 +#define PR_LOCK_SHADOW_STACK_STATUS 76 + +# define PR_SHADOW_STACK_ENABLE (1UL << 0) +# define PR_SHADOW_STACK_WRITE (1UL << 1) +# define PR_SHADOW_STACK_PUSH (1UL << 2) + +#define KSFT_SKIP 4 + +.macro function name + .macro endfunction + .type \name, @function + .purgem endfunction + .endm +\name: +.endm + +// Print a single character x0 to stdout +// Clobbers x0-x2,x8 +function putc + str x0, [sp, #-16]! + + mov x0, #1 // STDOUT_FILENO + mov x1, sp + mov x2, #1 + mov x8, #__NR_write + svc #0 + + add sp, sp, #16 + ret +endfunction +.globl putc + +// Print a NUL-terminated string starting at address x0 to stdout +// Clobbers x0-x3,x8 +function puts + mov x1, x0 + + mov x2, #0 +0: ldrb w3, [x0], #1 + cbz w3, 1f + add x2, x2, #1 + b 0b + +1: mov w0, #1 // STDOUT_FILENO + mov x8, #__NR_write + svc #0 + + ret +endfunction +.globl puts + +// Utility macro to print a literal string +// Clobbers x0-x4,x8 +.macro puts string + .pushsection .rodata.str1.1, "aMS", @progbits, 1 +.L__puts_literal\@: .string "\string" + .popsection + + ldr x0, =.L__puts_literal\@ + bl puts +.endm + +.globl _start +function _start + // Run with GCS + mov x0, PR_SET_SHADOW_STACK_STATUS + mov x1, PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_PUSH + mov x2, xzr + mov x3, xzr + mov x4, xzr + mov x5, xzr + mov x8, #__NR_prctl + svc #0 + cbz x0, 1f + puts "Failed to enable GCS with push permission\n" + mov x0, #KSFT_SKIP + b 2f +1: + sys #3, c7, c7, #0, x0 // GCSPUSHM + sysl x0, #3, c7, c7, #1 // GCSPOPM + + mov x0, #0 +2: + mov x8, #__NR_exit + svc #0 diff --git a/tools/testing/selftests/arm64/gcs/gcsstr.S b/tools/testing/selftests/arm64/gcs/gcsstr.S new file mode 100644 index 000000000000..a42bba6e30b1 --- /dev/null +++ b/tools/testing/selftests/arm64/gcs/gcsstr.S @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright 2024 Arm Limited +// +// Give ourselves GCS write permissions then use them + +#include + +/* Shadow Stack/Guarded Control Stack interface */ +#define PR_GET_SHADOW_STACK_STATUS 74 +#define PR_SET_SHADOW_STACK_STATUS 75 +#define PR_LOCK_SHADOW_STACK_STATUS 76 + +# define PR_SHADOW_STACK_ENABLE (1UL << 0) +# define PR_SHADOW_STACK_WRITE (1UL << 1) +# define PR_SHADOW_STACK_PUSH (1UL << 2) + +#define GCSPR_EL0 S3_3_C2_C5_1 + +#define KSFT_SKIP 4 + +.macro function name + .macro endfunction + .type \name, @function + .purgem endfunction + .endm +\name: +.endm + +// Print a single character x0 to stdout +// Clobbers x0-x2,x8 +function putc + str x0, [sp, #-16]! + + mov x0, #1 // STDOUT_FILENO + mov x1, sp + mov x2, #1 + mov x8, #__NR_write + svc #0 + + add sp, sp, #16 + ret +endfunction +.globl putc + +// Print a NUL-terminated string starting at address x0 to stdout +// Clobbers x0-x3,x8 +function puts + mov x1, x0 + + mov x2, #0 +0: ldrb w3, [x0], #1 + cbz w3, 1f + add x2, x2, #1 + b 0b + +1: mov w0, #1 // STDOUT_FILENO + mov x8, #__NR_write + svc #0 + + ret +endfunction +.globl puts + +// Utility macro to print a literal string +// Clobbers x0-x4,x8 +.macro puts string + .pushsection .rodata.str1.1, "aMS", @progbits, 1 +.L__puts_literal\@: .string "\string" + .popsection + + ldr x0, =.L__puts_literal\@ + bl puts +.endm + +.globl _start +function _start + // Run with GCS + mov x0, PR_SET_SHADOW_STACK_STATUS + mov x1, PR_SHADOW_STACK_ENABLE | PR_SHADOW_STACK_WRITE + mov x2, xzr + mov x3, xzr + mov x4, xzr + mov x5, xzr + mov x8, #__NR_prctl + svc #0 + cbz x0, 1f + puts "Failed to enable GCS with write permission\n" + mov x0, #KSFT_SKIP + b 2f +1: + mrs x0, GCSPR_EL0 + sub x0, x0, #8 + .inst 0xd91f1c01 // GCSSTR x1, x0 + + mov x0, #0 +2: + mov x8, #__NR_exit + svc #0 -- cgit v1.2.3 From 9b9be78258511e67767e4aa51f587cf22feb5065 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Oct 2024 15:36:25 +0100 Subject: kselftest/arm64: Ensure stable names for GCS stress test results The GCS stress test program currently uses the PID of the threads it creates in the test names it reports, resulting in unstable test names between runs. Fix this by using a thread number instead. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241011-arm64-gcs-stress-stable-name-v1-1-4950f226218e@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/gcs/gcs-stress.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/gcs/gcs-stress.c b/tools/testing/selftests/arm64/gcs/gcs-stress.c index bdec7ee8cfd5..03222c36c436 100644 --- a/tools/testing/selftests/arm64/gcs/gcs-stress.c +++ b/tools/testing/selftests/arm64/gcs/gcs-stress.c @@ -56,7 +56,7 @@ static int num_processors(void) return nproc; } -static void start_thread(struct child_data *child) +static void start_thread(struct child_data *child, int id) { int ret, pipefd[2], i; struct epoll_event ev; @@ -132,7 +132,7 @@ static void start_thread(struct child_data *child) ev.events = EPOLLIN | EPOLLHUP; ev.data.ptr = child; - ret = asprintf(&child->name, "Thread-%d", child->pid); + ret = asprintf(&child->name, "Thread-%d", id); if (ret == -1) ksft_exit_fail_msg("asprintf() failed\n"); @@ -437,7 +437,7 @@ int main(int argc, char **argv) tests); for (i = 0; i < gcs_threads; i++) - start_thread(&children[i]); + start_thread(&children[i], i); /* * All children started, close the startup pipe and let them -- cgit v1.2.3 From a496d0cdc84d81fbfd2026ef41c8ae9385d01fbb Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 10 Oct 2024 16:25:05 -0700 Subject: selftests/bpf: Add a test for kmem_cache_iter The test traverses all slab caches using the kmem_cache_iter and save the data into slab_result array map. And check if current task's pointer is from "task_struct" slab cache using bpf_get_kmem_cache(). Also compare the result array with /proc/slabinfo if available (when CONFIG_SLUB_DEBUG is on). Note that many of the fields in the slabinfo are transient, so it only compares the name and objsize fields. Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20241010232505.1339892-4-namhyung@kernel.org Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/prog_tests/kmem_cache_iter.c | 115 +++++++++++++++++++++ tools/testing/selftests/bpf/progs/bpf_iter.h | 7 ++ .../testing/selftests/bpf/progs/kmem_cache_iter.c | 87 ++++++++++++++++ 3 files changed, 209 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/kmem_cache_iter.c create mode 100644 tools/testing/selftests/bpf/progs/kmem_cache_iter.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/kmem_cache_iter.c b/tools/testing/selftests/bpf/prog_tests/kmem_cache_iter.c new file mode 100644 index 000000000000..848d8fc9171f --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/kmem_cache_iter.c @@ -0,0 +1,115 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Google */ + +#include +#include +#include +#include "kmem_cache_iter.skel.h" + +#define SLAB_NAME_MAX 32 + +struct kmem_cache_result { + char name[SLAB_NAME_MAX]; + long obj_size; +}; + +static void subtest_kmem_cache_iter_check_task_struct(struct kmem_cache_iter *skel) +{ + LIBBPF_OPTS(bpf_test_run_opts, opts, + .flags = 0, /* Run it with the current task */ + ); + int prog_fd = bpf_program__fd(skel->progs.check_task_struct); + + /* Get task_struct and check it if's from a slab cache */ + ASSERT_OK(bpf_prog_test_run_opts(prog_fd, &opts), "prog_test_run"); + + /* The BPF program should set 'found' variable */ + ASSERT_EQ(skel->bss->task_struct_found, 1, "task_struct_found"); +} + +static void subtest_kmem_cache_iter_check_slabinfo(struct kmem_cache_iter *skel) +{ + FILE *fp; + int map_fd; + char name[SLAB_NAME_MAX]; + unsigned long objsize; + char rest_of_line[1000]; + struct kmem_cache_result r; + int seen = 0; + + fp = fopen("/proc/slabinfo", "r"); + if (fp == NULL) { + /* CONFIG_SLUB_DEBUG is not enabled */ + return; + } + + map_fd = bpf_map__fd(skel->maps.slab_result); + + /* Ignore first two lines for header */ + fscanf(fp, "slabinfo - version: %*d.%*d\n"); + fscanf(fp, "# %*s %*s %*s %*s %*s %*s : %[^\n]\n", rest_of_line); + + /* Compare name and objsize only - others can be changes frequently */ + while (fscanf(fp, "%s %*u %*u %lu %*u %*u : %[^\n]\n", + name, &objsize, rest_of_line) == 3) { + int ret = bpf_map_lookup_elem(map_fd, &seen, &r); + + if (!ASSERT_OK(ret, "kmem_cache_lookup")) + break; + + ASSERT_STREQ(r.name, name, "kmem_cache_name"); + ASSERT_EQ(r.obj_size, objsize, "kmem_cache_objsize"); + + seen++; + } + + ASSERT_EQ(skel->bss->kmem_cache_seen, seen, "kmem_cache_seen_eq"); + + fclose(fp); +} + +void test_kmem_cache_iter(void) +{ + DECLARE_LIBBPF_OPTS(bpf_iter_attach_opts, opts); + struct kmem_cache_iter *skel = NULL; + union bpf_iter_link_info linfo = {}; + struct bpf_link *link; + char buf[256]; + int iter_fd; + + skel = kmem_cache_iter__open_and_load(); + if (!ASSERT_OK_PTR(skel, "kmem_cache_iter__open_and_load")) + return; + + opts.link_info = &linfo; + opts.link_info_len = sizeof(linfo); + + link = bpf_program__attach_iter(skel->progs.slab_info_collector, &opts); + if (!ASSERT_OK_PTR(link, "attach_iter")) + goto destroy; + + iter_fd = bpf_iter_create(bpf_link__fd(link)); + if (!ASSERT_GE(iter_fd, 0, "iter_create")) + goto free_link; + + memset(buf, 0, sizeof(buf)); + while (read(iter_fd, buf, sizeof(buf) > 0)) { + /* Read out all contents */ + printf("%s", buf); + } + + /* Next reads should return 0 */ + ASSERT_EQ(read(iter_fd, buf, sizeof(buf)), 0, "read"); + + if (test__start_subtest("check_task_struct")) + subtest_kmem_cache_iter_check_task_struct(skel); + if (test__start_subtest("check_slabinfo")) + subtest_kmem_cache_iter_check_slabinfo(skel); + + close(iter_fd); + +free_link: + bpf_link__destroy(link); +destroy: + kmem_cache_iter__destroy(skel); +} diff --git a/tools/testing/selftests/bpf/progs/bpf_iter.h b/tools/testing/selftests/bpf/progs/bpf_iter.h index c41ee80533ca..3305dc3a74b3 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter.h +++ b/tools/testing/selftests/bpf/progs/bpf_iter.h @@ -24,6 +24,7 @@ #define BTF_F_PTR_RAW BTF_F_PTR_RAW___not_used #define BTF_F_ZERO BTF_F_ZERO___not_used #define bpf_iter__ksym bpf_iter__ksym___not_used +#define bpf_iter__kmem_cache bpf_iter__kmem_cache___not_used #include "vmlinux.h" #undef bpf_iter_meta #undef bpf_iter__bpf_map @@ -48,6 +49,7 @@ #undef BTF_F_PTR_RAW #undef BTF_F_ZERO #undef bpf_iter__ksym +#undef bpf_iter__kmem_cache struct bpf_iter_meta { struct seq_file *seq; @@ -165,3 +167,8 @@ struct bpf_iter__ksym { struct bpf_iter_meta *meta; struct kallsym_iter *ksym; }; + +struct bpf_iter__kmem_cache { + struct bpf_iter_meta *meta; + struct kmem_cache *s; +} __attribute__((preserve_access_index)); diff --git a/tools/testing/selftests/bpf/progs/kmem_cache_iter.c b/tools/testing/selftests/bpf/progs/kmem_cache_iter.c new file mode 100644 index 000000000000..72c9dafecd98 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/kmem_cache_iter.c @@ -0,0 +1,87 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Google */ + +#include "bpf_iter.h" +#include +#include + +char _license[] SEC("license") = "GPL"; + +#define SLAB_NAME_MAX 32 + +struct kmem_cache_result { + char name[SLAB_NAME_MAX]; + long obj_size; +}; + +struct { + __uint(type, BPF_MAP_TYPE_HASH); + __uint(key_size, sizeof(void *)); + __uint(value_size, SLAB_NAME_MAX); + __uint(max_entries, 1); +} slab_hash SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __uint(key_size, sizeof(int)); + __uint(value_size, sizeof(struct kmem_cache_result)); + __uint(max_entries, 1024); +} slab_result SEC(".maps"); + +extern struct kmem_cache *bpf_get_kmem_cache(u64 addr) __ksym; + +/* Result, will be checked by userspace */ +int task_struct_found; +int kmem_cache_seen; + +SEC("iter/kmem_cache") +int slab_info_collector(struct bpf_iter__kmem_cache *ctx) +{ + struct seq_file *seq = ctx->meta->seq; + struct kmem_cache *s = ctx->s; + struct kmem_cache_result *r; + int idx; + + if (s) { + /* To make sure if the slab_iter implements the seq interface + * properly and it's also useful for debugging. + */ + BPF_SEQ_PRINTF(seq, "%s: %u\n", s->name, s->size); + + idx = kmem_cache_seen; + r = bpf_map_lookup_elem(&slab_result, &idx); + if (r == NULL) + return 0; + + kmem_cache_seen++; + + /* Save name and size to match /proc/slabinfo */ + bpf_probe_read_kernel_str(r->name, sizeof(r->name), s->name); + r->obj_size = s->size; + + if (!bpf_strncmp(r->name, 11, "task_struct")) + bpf_map_update_elem(&slab_hash, &s, r->name, BPF_NOEXIST); + } + + return 0; +} + +SEC("raw_tp/bpf_test_finish") +int BPF_PROG(check_task_struct) +{ + u64 curr = bpf_get_current_task(); + struct kmem_cache *s; + char *name; + + s = bpf_get_kmem_cache(curr); + if (s == NULL) { + task_struct_found = -1; + return 0; + } + name = bpf_map_lookup_elem(&slab_hash, &s); + if (name && !bpf_strncmp(name, 11, "task_struct")) + task_struct_found = 1; + else + task_struct_found = -2; + return 0; +} -- cgit v1.2.3 From f987a640e853e96c85f8193d0c2f79744622e3d8 Mon Sep 17 00:00:00 2001 From: Juntong Deng Date: Mon, 14 Oct 2024 10:25:53 +0100 Subject: selftests/bpf: Add tests for bpf_task_from_vpid() kfunc This patch adds test cases for bpf_task_from_vpid() kfunc. task_kfunc_from_vpid_no_null_check is used to test the case where the return value is not checked for NULL pointer. test_task_from_vpid_current is used to test obtaining the struct task_struct of the process in the pid namespace based on vpid. test_task_from_vpid_invalid is used to test the case of invalid vpid. test_task_from_vpid_current and test_task_from_vpid_invalid will run in the new namespace. Signed-off-by: Juntong Deng Link: https://lore.kernel.org/r/AM6PR03MB5848F13435CD650AC4B7BD7099442@AM6PR03MB5848.eurprd03.prod.outlook.com Signed-off-by: Alexei Starovoitov --- .../testing/selftests/bpf/prog_tests/task_kfunc.c | 80 ++++++++++++++++++++++ .../selftests/bpf/progs/task_kfunc_common.h | 1 + .../selftests/bpf/progs/task_kfunc_failure.c | 14 ++++ .../selftests/bpf/progs/task_kfunc_success.c | 51 ++++++++++++++ 4 files changed, 146 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/task_kfunc.c b/tools/testing/selftests/bpf/prog_tests/task_kfunc.c index d4579f735398..83b90335967a 100644 --- a/tools/testing/selftests/bpf/prog_tests/task_kfunc.c +++ b/tools/testing/selftests/bpf/prog_tests/task_kfunc.c @@ -68,6 +68,74 @@ cleanup: task_kfunc_success__destroy(skel); } +static int run_vpid_test(void *prog_name) +{ + struct task_kfunc_success *skel; + struct bpf_program *prog; + int prog_fd, err = 0; + + if (getpid() != 1) + return 1; + + skel = open_load_task_kfunc_skel(); + if (!skel) + return 2; + + if (skel->bss->err) { + err = 3; + goto cleanup; + } + + prog = bpf_object__find_program_by_name(skel->obj, prog_name); + if (!prog) { + err = 4; + goto cleanup; + } + + prog_fd = bpf_program__fd(prog); + if (prog_fd < 0) { + err = 5; + goto cleanup; + } + + if (bpf_prog_test_run_opts(prog_fd, NULL)) { + err = 6; + goto cleanup; + } + + if (skel->bss->err) + err = 7 + skel->bss->err; +cleanup: + task_kfunc_success__destroy(skel); + return err; +} + +static void run_vpid_success_test(const char *prog_name) +{ + const int stack_size = 1024 * 1024; + int child_pid, wstatus; + char *stack; + + stack = (char *)malloc(stack_size); + if (!ASSERT_OK_PTR(stack, "clone_stack")) + return; + + child_pid = clone(run_vpid_test, stack + stack_size, + CLONE_NEWPID | SIGCHLD, (void *)prog_name); + if (!ASSERT_GT(child_pid, -1, "child_pid")) + goto cleanup; + + if (!ASSERT_GT(waitpid(child_pid, &wstatus, 0), -1, "waitpid")) + goto cleanup; + + if (WEXITSTATUS(wstatus) > 7) + ASSERT_OK(WEXITSTATUS(wstatus) - 7, "vpid_test_failure"); + else + ASSERT_OK(WEXITSTATUS(wstatus), "run_vpid_test_err"); +cleanup: + free(stack); +} + static const char * const success_tests[] = { "test_task_acquire_release_argument", "test_task_acquire_release_current", @@ -83,6 +151,11 @@ static const char * const success_tests[] = { "test_task_kfunc_flavor_relo_not_found", }; +static const char * const vpid_success_tests[] = { + "test_task_from_vpid_current", + "test_task_from_vpid_invalid", +}; + void test_task_kfunc(void) { int i; @@ -94,5 +167,12 @@ void test_task_kfunc(void) run_success_test(success_tests[i]); } + for (i = 0; i < ARRAY_SIZE(vpid_success_tests); i++) { + if (!test__start_subtest(vpid_success_tests[i])) + continue; + + run_vpid_success_test(vpid_success_tests[i]); + } + RUN_TESTS(task_kfunc_failure); } diff --git a/tools/testing/selftests/bpf/progs/task_kfunc_common.h b/tools/testing/selftests/bpf/progs/task_kfunc_common.h index 6720c4b5be41..e9c4fea7a4bb 100644 --- a/tools/testing/selftests/bpf/progs/task_kfunc_common.h +++ b/tools/testing/selftests/bpf/progs/task_kfunc_common.h @@ -23,6 +23,7 @@ struct { struct task_struct *bpf_task_acquire(struct task_struct *p) __ksym; void bpf_task_release(struct task_struct *p) __ksym; struct task_struct *bpf_task_from_pid(s32 pid) __ksym; +struct task_struct *bpf_task_from_vpid(s32 vpid) __ksym; void bpf_rcu_read_lock(void) __ksym; void bpf_rcu_read_unlock(void) __ksym; diff --git a/tools/testing/selftests/bpf/progs/task_kfunc_failure.c b/tools/testing/selftests/bpf/progs/task_kfunc_failure.c index ad88a3796ddf..4c07ea193f72 100644 --- a/tools/testing/selftests/bpf/progs/task_kfunc_failure.c +++ b/tools/testing/selftests/bpf/progs/task_kfunc_failure.c @@ -247,6 +247,20 @@ int BPF_PROG(task_kfunc_from_pid_no_null_check, struct task_struct *task, u64 cl return 0; } +SEC("tp_btf/task_newtask") +__failure __msg("Possibly NULL pointer passed to trusted arg0") +int BPF_PROG(task_kfunc_from_vpid_no_null_check, struct task_struct *task, u64 clone_flags) +{ + struct task_struct *acquired; + + acquired = bpf_task_from_vpid(task->pid); + + /* Releasing bpf_task_from_vpid() lookup without a NULL check. */ + bpf_task_release(acquired); + + return 0; +} + SEC("lsm/task_free") __failure __msg("R1 must be a rcu pointer") int BPF_PROG(task_kfunc_from_lsm_task_free, struct task_struct *task) diff --git a/tools/testing/selftests/bpf/progs/task_kfunc_success.c b/tools/testing/selftests/bpf/progs/task_kfunc_success.c index a55149015063..5fb4fc19d26a 100644 --- a/tools/testing/selftests/bpf/progs/task_kfunc_success.c +++ b/tools/testing/selftests/bpf/progs/task_kfunc_success.c @@ -366,3 +366,54 @@ int BPF_PROG(task_kfunc_acquire_trusted_walked, struct task_struct *task, u64 cl return 0; } + +SEC("syscall") +int test_task_from_vpid_current(const void *ctx) +{ + struct task_struct *current, *v_task; + + v_task = bpf_task_from_vpid(1); + if (!v_task) { + err = 1; + return 0; + } + + current = bpf_get_current_task_btf(); + + /* The current process should be the init process (pid 1) in the new pid namespace. */ + if (current != v_task) + err = 2; + + bpf_task_release(v_task); + return 0; +} + +SEC("syscall") +int test_task_from_vpid_invalid(const void *ctx) +{ + struct task_struct *v_task; + + v_task = bpf_task_from_vpid(-1); + if (v_task) { + err = 1; + goto err; + } + + /* There should be only one process (current process) in the new pid namespace. */ + v_task = bpf_task_from_vpid(2); + if (v_task) { + err = 2; + goto err; + } + + v_task = bpf_task_from_vpid(9999); + if (v_task) { + err = 3; + goto err; + } + + return 0; +err: + bpf_task_release(v_task); + return 0; +} -- cgit v1.2.3 From 021611d33e78694f4bd54573093c6fc70a812644 Mon Sep 17 00:00:00 2001 From: Leon Hwang Date: Tue, 15 Oct 2024 23:02:07 +0800 Subject: selftests/bpf: Add test to verify tailcall and freplace restrictions Add a test case to ensure that attaching a tail callee program with an freplace program fails, and that updating an extended program to a prog_array map is also prohibited. This test is designed to prevent the potential infinite loop issue caused by the combination of tail calls and freplace, ensuring the correct behavior and stability of the system. Additionally, fix the broken tailcalls/tailcall_freplace selftest because an extension prog should not be tailcalled. cd tools/testing/selftests/bpf; ./test_progs -t tailcalls 337/25 tailcalls/tailcall_freplace:OK 337/26 tailcalls/tailcall_bpf2bpf_freplace:OK 337 tailcalls:OK Summary: 1/26 PASSED, 0 SKIPPED, 0 FAILED Acked-by: Eduard Zingerman Signed-off-by: Leon Hwang Link: https://lore.kernel.org/r/20241015150207.70264-3-leon.hwang@linux.dev Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/prog_tests/tailcalls.c | 120 ++++++++++++++++++--- tools/testing/selftests/bpf/progs/tc_bpf2bpf.c | 5 +- 2 files changed, 109 insertions(+), 16 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/tailcalls.c b/tools/testing/selftests/bpf/prog_tests/tailcalls.c index 21c5a37846ad..40f22454cf05 100644 --- a/tools/testing/selftests/bpf/prog_tests/tailcalls.c +++ b/tools/testing/selftests/bpf/prog_tests/tailcalls.c @@ -1496,8 +1496,8 @@ static void test_tailcall_bpf2bpf_hierarchy_3(void) RUN_TESTS(tailcall_bpf2bpf_hierarchy3); } -/* test_tailcall_freplace checks that the attached freplace prog is OK to - * update the prog_array map. +/* test_tailcall_freplace checks that the freplace prog fails to update the + * prog_array map, no matter whether the freplace prog attaches to its target. */ static void test_tailcall_freplace(void) { @@ -1505,7 +1505,7 @@ static void test_tailcall_freplace(void) struct bpf_link *freplace_link = NULL; struct bpf_program *freplace_prog; struct tc_bpf2bpf *tc_skel = NULL; - int prog_fd, map_fd; + int prog_fd, tc_prog_fd, map_fd; char buff[128] = {}; int err, key; @@ -1523,9 +1523,10 @@ static void test_tailcall_freplace(void) if (!ASSERT_OK_PTR(tc_skel, "tc_bpf2bpf__open_and_load")) goto out; - prog_fd = bpf_program__fd(tc_skel->progs.entry_tc); + tc_prog_fd = bpf_program__fd(tc_skel->progs.entry_tc); freplace_prog = freplace_skel->progs.entry_freplace; - err = bpf_program__set_attach_target(freplace_prog, prog_fd, "subprog"); + err = bpf_program__set_attach_target(freplace_prog, tc_prog_fd, + "subprog_tc"); if (!ASSERT_OK(err, "set_attach_target")) goto out; @@ -1533,27 +1534,116 @@ static void test_tailcall_freplace(void) if (!ASSERT_OK(err, "tailcall_freplace__load")) goto out; - freplace_link = bpf_program__attach_freplace(freplace_prog, prog_fd, - "subprog"); + map_fd = bpf_map__fd(freplace_skel->maps.jmp_table); + prog_fd = bpf_program__fd(freplace_prog); + key = 0; + err = bpf_map_update_elem(map_fd, &key, &prog_fd, BPF_ANY); + ASSERT_ERR(err, "update jmp_table failure"); + + freplace_link = bpf_program__attach_freplace(freplace_prog, tc_prog_fd, + "subprog_tc"); if (!ASSERT_OK_PTR(freplace_link, "attach_freplace")) goto out; - map_fd = bpf_map__fd(freplace_skel->maps.jmp_table); - prog_fd = bpf_program__fd(freplace_prog); + err = bpf_map_update_elem(map_fd, &key, &prog_fd, BPF_ANY); + ASSERT_ERR(err, "update jmp_table failure"); + +out: + bpf_link__destroy(freplace_link); + tailcall_freplace__destroy(freplace_skel); + tc_bpf2bpf__destroy(tc_skel); +} + +/* test_tailcall_bpf2bpf_freplace checks the failure that fails to attach a tail + * callee prog with freplace prog or fails to update an extended prog to + * prog_array map. + */ +static void test_tailcall_bpf2bpf_freplace(void) +{ + struct tailcall_freplace *freplace_skel = NULL; + struct bpf_link *freplace_link = NULL; + struct tc_bpf2bpf *tc_skel = NULL; + char buff[128] = {}; + int prog_fd, map_fd; + int err, key; + + LIBBPF_OPTS(bpf_test_run_opts, topts, + .data_in = buff, + .data_size_in = sizeof(buff), + .repeat = 1, + ); + + tc_skel = tc_bpf2bpf__open_and_load(); + if (!ASSERT_OK_PTR(tc_skel, "tc_bpf2bpf__open_and_load")) + goto out; + + prog_fd = bpf_program__fd(tc_skel->progs.entry_tc); + freplace_skel = tailcall_freplace__open(); + if (!ASSERT_OK_PTR(freplace_skel, "tailcall_freplace__open")) + goto out; + + err = bpf_program__set_attach_target(freplace_skel->progs.entry_freplace, + prog_fd, "subprog_tc"); + if (!ASSERT_OK(err, "set_attach_target")) + goto out; + + err = tailcall_freplace__load(freplace_skel); + if (!ASSERT_OK(err, "tailcall_freplace__load")) + goto out; + + /* OK to attach then detach freplace prog. */ + + freplace_link = bpf_program__attach_freplace(freplace_skel->progs.entry_freplace, + prog_fd, "subprog_tc"); + if (!ASSERT_OK_PTR(freplace_link, "attach_freplace")) + goto out; + + err = bpf_link__destroy(freplace_link); + if (!ASSERT_OK(err, "destroy link")) + goto out; + + /* OK to update prog_array map then delete element from the map. */ + key = 0; + map_fd = bpf_map__fd(freplace_skel->maps.jmp_table); err = bpf_map_update_elem(map_fd, &key, &prog_fd, BPF_ANY); if (!ASSERT_OK(err, "update jmp_table")) goto out; - prog_fd = bpf_program__fd(tc_skel->progs.entry_tc); - err = bpf_prog_test_run_opts(prog_fd, &topts); - ASSERT_OK(err, "test_run"); - ASSERT_EQ(topts.retval, 34, "test_run retval"); + err = bpf_map_delete_elem(map_fd, &key); + if (!ASSERT_OK(err, "delete_elem from jmp_table")) + goto out; + + /* Fail to attach a tail callee prog with freplace prog. */ + + err = bpf_map_update_elem(map_fd, &key, &prog_fd, BPF_ANY); + if (!ASSERT_OK(err, "update jmp_table")) + goto out; + + freplace_link = bpf_program__attach_freplace(freplace_skel->progs.entry_freplace, + prog_fd, "subprog_tc"); + if (!ASSERT_ERR_PTR(freplace_link, "attach_freplace failure")) + goto out; + + err = bpf_map_delete_elem(map_fd, &key); + if (!ASSERT_OK(err, "delete_elem from jmp_table")) + goto out; + + /* Fail to update an extended prog to prog_array map. */ + + freplace_link = bpf_program__attach_freplace(freplace_skel->progs.entry_freplace, + prog_fd, "subprog_tc"); + if (!ASSERT_OK_PTR(freplace_link, "attach_freplace")) + goto out; + + err = bpf_map_update_elem(map_fd, &key, &prog_fd, BPF_ANY); + if (!ASSERT_ERR(err, "update jmp_table failure")) + goto out; out: bpf_link__destroy(freplace_link); - tc_bpf2bpf__destroy(tc_skel); tailcall_freplace__destroy(freplace_skel); + tc_bpf2bpf__destroy(tc_skel); } void test_tailcalls(void) @@ -1606,4 +1696,6 @@ void test_tailcalls(void) test_tailcall_bpf2bpf_hierarchy_3(); if (test__start_subtest("tailcall_freplace")) test_tailcall_freplace(); + if (test__start_subtest("tailcall_bpf2bpf_freplace")) + test_tailcall_bpf2bpf_freplace(); } diff --git a/tools/testing/selftests/bpf/progs/tc_bpf2bpf.c b/tools/testing/selftests/bpf/progs/tc_bpf2bpf.c index 8a0632c37839..d1a57f7d09bd 100644 --- a/tools/testing/selftests/bpf/progs/tc_bpf2bpf.c +++ b/tools/testing/selftests/bpf/progs/tc_bpf2bpf.c @@ -5,10 +5,11 @@ #include "bpf_misc.h" __noinline -int subprog(struct __sk_buff *skb) +int subprog_tc(struct __sk_buff *skb) { int ret = 1; + __sink(skb); __sink(ret); return ret; } @@ -16,7 +17,7 @@ int subprog(struct __sk_buff *skb) SEC("tc") int entry_tc(struct __sk_buff *skb) { - return subprog(skb); + return subprog_tc(skb); } char __license[] SEC("license") = "GPL"; -- cgit v1.2.3 From 42fd7cac57d6001974a0546e5eb50a430aa95b11 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 09:04:13 -0700 Subject: perf tool_pmu: Remove duplicate io.h header Remove duplicate inclusion of api/io.h. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202410131417.ynhvnEJb-lkp@intel.com/ Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20241016160413.51587-1-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/tool_pmu.c | 1 - 1 file changed, 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c index bd1cee643eb5..4fb097578479 100644 --- a/tools/perf/util/tool_pmu.c +++ b/tools/perf/util/tool_pmu.c @@ -11,7 +11,6 @@ #include "tsc.h" #include #include -#include #include #include #include -- cgit v1.2.3 From b68b5b36c790a82522623f9f1fd1c4e1f06aff2d Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Fri, 11 Oct 2024 11:02:06 +0000 Subject: perf x86/topdown: Make topdown metrics comparators be symmetric The commit "3b5edc0421e2 (perf x86/topdown: Don't move topdown metric events in group)" modifies topdown metrics comparator to move topdown metrics events which are not in same group with previous event. But it just modifies the 2nd comparator and causes the comparators become asymmetric. Thus modify the 1st topdown metrics comparator and make the two comparators be symmetric, and refine the comments as well. Suggested-by: Ian Rogers Signed-off-by: Dapeng Mi Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20241011110207.1032235-1-dapeng1.mi@linux.intel.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/evlist.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/evlist.c b/tools/perf/arch/x86/util/evlist.c index 438e4639fa89..447a734e591c 100644 --- a/tools/perf/arch/x86/util/evlist.c +++ b/tools/perf/arch/x86/util/evlist.c @@ -52,7 +52,7 @@ int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) * 3,015,058 cycles * topdown-retiring * - * if slots event and topdown metrics events are in two groups, the group which + * If slots event and topdown metrics events are in two groups, the group which * has topdown metrics events must contain only the topdown metrics event, * otherwise topdown metrics event can't be regrouped correctly as well, e.g. * @@ -69,13 +69,16 @@ int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) return -1; if (arch_is_topdown_slots(rhs)) return 1; - /* Followed by topdown events. */ - if (arch_is_topdown_metrics(lhs) && !arch_is_topdown_metrics(rhs)) - return -1; + /* - * Move topdown events forward only when topdown events - * are not in same group with previous event. + * Move topdown metrics events forward only when topdown metrics + * events are not in same group with previous slots event. If + * topdown metrics events are already in same group with slots + * event, do nothing. */ + if (arch_is_topdown_metrics(lhs) && !arch_is_topdown_metrics(rhs) && + lhs->core.leader != rhs->core.leader) + return -1; if (!arch_is_topdown_metrics(lhs) && arch_is_topdown_metrics(rhs) && lhs->core.leader != rhs->core.leader) return 1; -- cgit v1.2.3 From fbc798316bef1b143e2cd0665cc6079529d6b0db Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Fri, 11 Oct 2024 11:02:07 +0000 Subject: perf x86/topdown: Refine helper arch_is_topdown_metrics() Leverage the existed function perf_pmu__name_from_config() to check if an event is topdown metrics event. perf_pmu__name_from_config() goes through the defined formats and figures out the config of pre-defined topdown events. This avoids to figure out the config of topdown pre-defined events with hard-coded format strings "event=" and "umask=" and provides more flexibility. Suggested-by: Ian Rogers Signed-off-by: Dapeng Mi Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20241011110207.1032235-2-dapeng1.mi@linux.intel.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/topdown.c | 39 +++++++++----------------------------- 1 file changed, 9 insertions(+), 30 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/topdown.c b/tools/perf/arch/x86/util/topdown.c index cb2c64928bc4..f63747d0abdf 100644 --- a/tools/perf/arch/x86/util/topdown.c +++ b/tools/perf/arch/x86/util/topdown.c @@ -41,43 +41,22 @@ bool arch_is_topdown_slots(const struct evsel *evsel) return false; } -static int compare_topdown_event(void *vstate, struct pmu_event_info *info) -{ - int *config = vstate; - int event = 0; - int umask = 0; - char *str; - - if (!strcasestr(info->name, "topdown")) - return 0; - - str = strcasestr(info->str, "event="); - if (str) - sscanf(str, "event=%x", &event); - - str = strcasestr(info->str, "umask="); - if (str) - sscanf(str, "umask=%x", &umask); - - if (event == 0 && *config == (event | umask << 8)) - return 1; - - return 0; -} - bool arch_is_topdown_metrics(const struct evsel *evsel) { - struct perf_pmu *pmu = evsel__find_pmu(evsel); int config = evsel->core.attr.config; + const char *name_from_config; + struct perf_pmu *pmu; - if (!pmu || !pmu->is_core) + /* All topdown events have an event code of 0. */ + if ((config & 0xFF) != 0) return false; - if (perf_pmu__for_each_event(pmu, false, &config, - compare_topdown_event)) - return true; + pmu = evsel__find_pmu(evsel); + if (!pmu || !pmu->is_core) + return false; - return false; + name_from_config = perf_pmu__name_from_config(pmu, config); + return name_from_config && strcasestr(name_from_config, "topdown"); } /* -- cgit v1.2.3 From ee9b352ce4650ffc0d8ca0ac373d7c009c7e561e Mon Sep 17 00:00:00 2001 From: Zijian Zhang Date: Sat, 12 Oct 2024 20:37:30 +0000 Subject: selftests/bpf: Fix msg_verify_data in test_sockmap Function msg_verify_data should have context of bytes_cnt and k instead of assuming they are zero. Otherwise, test_sockmap with data integrity test will report some errors. I also fix the logic related to size and index j 1/ 6 sockmap::txmsg test passthrough:FAIL 2/ 6 sockmap::txmsg test redirect:FAIL 7/12 sockmap::txmsg test apply:FAIL 10/11 sockmap::txmsg test push_data:FAIL 11/17 sockmap::txmsg test pull-data:FAIL 12/ 9 sockmap::txmsg test pop-data:FAIL 13/ 1 sockmap::txmsg test push/pop data:FAIL ... Pass: 24 Fail: 52 After applying this patch, some of the errors are solved, but for push, pull and pop, we may need more fixes to msg_verify_data, added a TODO 10/11 sockmap::txmsg test push_data:FAIL 11/17 sockmap::txmsg test pull-data:FAIL 12/ 9 sockmap::txmsg test pop-data:FAIL ... Pass: 37 Fail: 15 Besides, added a custom errno EDATAINTEGRITY for msg_verify_data, we shall not ignore the error in txmsg_cork case. Fixes: 753fb2ee0934 ("bpf: sockmap, add msg_peek tests to test_sockmap") Fixes: 16edddfe3c5d ("selftests/bpf: test_sockmap, check test failure") Acked-by: John Fastabend Signed-off-by: Zijian Zhang Link: https://lore.kernel.org/r/20241012203731.1248619-2-zijianzhang@bytedance.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/test_sockmap.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 3e02d7267de8..8249f3c1fbd6 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -56,6 +56,8 @@ static void running_handler(int a); #define BPF_SOCKHASH_FILENAME "test_sockhash_kern.bpf.o" #define CG_PATH "/sockmap" +#define EDATAINTEGRITY 2001 + /* global sockets */ int s1, s2, c1, c2, p1, p2; int test_cnt; @@ -510,23 +512,25 @@ unwind_iov: return -ENOMEM; } -static int msg_verify_data(struct msghdr *msg, int size, int chunk_sz) +/* TODO: Add verification logic for push, pull and pop data */ +static int msg_verify_data(struct msghdr *msg, int size, int chunk_sz, + unsigned char *k_p, int *bytes_cnt_p) { - int i, j = 0, bytes_cnt = 0; - unsigned char k = 0; + int i, j, bytes_cnt = *bytes_cnt_p; + unsigned char k = *k_p; - for (i = 0; i < msg->msg_iovlen; i++) { + for (i = 0, j = 0; i < msg->msg_iovlen && size; i++, j = 0) { unsigned char *d = msg->msg_iov[i].iov_base; /* Special case test for skb ingress + ktls */ if (i == 0 && txmsg_ktls_skb) { if (msg->msg_iov[i].iov_len < 4) - return -EIO; + return -EDATAINTEGRITY; if (memcmp(d, "PASS", 4) != 0) { fprintf(stderr, "detected skb data error with skb ingress update @iov[%i]:%i \"%02x %02x %02x %02x\" != \"PASS\"\n", i, 0, d[0], d[1], d[2], d[3]); - return -EIO; + return -EDATAINTEGRITY; } j = 4; /* advance index past PASS header */ } @@ -536,7 +540,7 @@ static int msg_verify_data(struct msghdr *msg, int size, int chunk_sz) fprintf(stderr, "detected data corruption @iov[%i]:%i %02x != %02x, %02x ?= %02x\n", i, j, d[j], k - 1, d[j+1], k); - return -EIO; + return -EDATAINTEGRITY; } bytes_cnt++; if (bytes_cnt == chunk_sz) { @@ -546,6 +550,8 @@ static int msg_verify_data(struct msghdr *msg, int size, int chunk_sz) size--; } } + *k_p = k; + *bytes_cnt_p = bytes_cnt; return 0; } @@ -602,6 +608,8 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, float total_bytes, txmsg_pop_total; int fd_flags = O_NONBLOCK; struct timeval timeout; + unsigned char k = 0; + int bytes_cnt = 0; fd_set w; fcntl(fd, fd_flags); @@ -696,7 +704,7 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, iov_length * cnt : iov_length * iov_count; - errno = msg_verify_data(&msg, recv, chunk_sz); + errno = msg_verify_data(&msg, recv, chunk_sz, &k, &bytes_cnt); if (errno) { perror("data verify msg failed"); goto out_errno; @@ -704,7 +712,9 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, if (recvp) { errno = msg_verify_data(&msg_peek, recvp, - chunk_sz); + chunk_sz, + &k, + &bytes_cnt); if (errno) { perror("data verify msg_peek failed"); goto out_errno; @@ -812,7 +822,7 @@ static int sendmsg_test(struct sockmap_options *opt) s.bytes_sent, sent_Bps, sent_Bps/giga, s.bytes_recvd, recvd_Bps, recvd_Bps/giga, peek_flag ? "(peek_msg)" : ""); - if (err && txmsg_cork) + if (err && err != -EDATAINTEGRITY && txmsg_cork) err = 0; exit(err ? 1 : 0); } else if (rxpid == -1) { -- cgit v1.2.3 From b29e231d66303c12b7b8ac3ac2a057df06b161e8 Mon Sep 17 00:00:00 2001 From: Zijian Zhang Date: Sat, 12 Oct 2024 20:37:31 +0000 Subject: selftests/bpf: Fix txmsg_redir of test_txmsg_pull in test_sockmap txmsg_redir in "Test pull + redirect" case of test_txmsg_pull should be 1 instead of 0. Fixes: 328aa08a081b ("bpf: Selftests, break down test_sockmap into subtests") Acked-by: John Fastabend Signed-off-by: Zijian Zhang Link: https://lore.kernel.org/r/20241012203731.1248619-3-zijianzhang@bytedance.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/test_sockmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 8249f3c1fbd6..075c93ed143e 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -1606,7 +1606,7 @@ static void test_txmsg_pull(int cgrp, struct sockmap_options *opt) test_send_large(opt, cgrp); /* Test pull + redirect */ - txmsg_redir = 0; + txmsg_redir = 1; txmsg_start = 1; txmsg_end = 2; test_send(opt, cgrp); -- cgit v1.2.3 From 1ec43493c94f1661e5db79743bc720e1fe5ddb7f Mon Sep 17 00:00:00 2001 From: Daniel Zahka Date: Fri, 11 Oct 2024 11:35:48 -0700 Subject: selftests: drv-net: rss_ctx: add rss ctx busy testcase It should be invalid to delete an rss context while it is being referenced from an ntuple filter. ethtool core should prevent this from happening. This patch adds a testcase to verify this behavior. Signed-off-by: Daniel Zahka Signed-off-by: Paolo Abeni --- tools/testing/selftests/drivers/net/hw/rss_ctx.py | 32 +++++++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/hw/rss_ctx.py b/tools/testing/selftests/drivers/net/hw/rss_ctx.py index 9d7adb3cf33b..29995586993c 100755 --- a/tools/testing/selftests/drivers/net/hw/rss_ctx.py +++ b/tools/testing/selftests/drivers/net/hw/rss_ctx.py @@ -6,7 +6,7 @@ import random from lib.py import ksft_run, ksft_pr, ksft_exit, ksft_eq, ksft_ne, ksft_ge, ksft_lt from lib.py import NetDrvEpEnv from lib.py import EthtoolFamily, NetdevFamily -from lib.py import KsftSkipEx +from lib.py import KsftSkipEx, KsftFailEx from lib.py import rand_port from lib.py import ethtool, ip, defer, GenerateTraffic, CmdExitFailure @@ -606,6 +606,33 @@ def test_rss_context_overlap2(cfg): test_rss_context_overlap(cfg, True) +def test_delete_rss_context_busy(cfg): + """ + Test that deletion returns -EBUSY when an rss context is being used + by an ntuple filter. + """ + + require_ntuple(cfg) + + # create additional rss context + ctx_id = ethtool_create(cfg, "-X", "context new") + ctx_deleter = defer(ethtool, f"-X {cfg.ifname} context {ctx_id} delete") + + # utilize context from ntuple filter + port = rand_port() + flow = f"flow-type tcp{cfg.addr_ipver} dst-port {port} context {ctx_id}" + ntuple_id = ethtool_create(cfg, "-N", flow) + defer(ethtool, f"-N {cfg.ifname} delete {ntuple_id}") + + # attempt to delete in-use context + try: + ctx_deleter.exec_only() + ctx_deleter.cancel() + raise KsftFailEx(f"deleted context {ctx_id} used by rule {ntuple_id}") + except CmdExitFailure: + pass + + def main() -> None: with NetDrvEpEnv(__file__, nsim_test=False) as cfg: cfg.ethnl = EthtoolFamily() @@ -616,7 +643,8 @@ def main() -> None: test_rss_context, test_rss_context4, test_rss_context32, test_rss_context_dump, test_rss_context_queue_reconfigure, test_rss_context_overlap, test_rss_context_overlap2, - test_rss_context_out_of_order, test_rss_context4_create_with_cfg], + test_rss_context_out_of_order, test_rss_context4_create_with_cfg, + test_delete_rss_context_busy], args=(cfg, )) ksft_exit() -- cgit v1.2.3 From 3662f82f16814636aaa152cdbd8db4b96984abea Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:56:54 -0700 Subject: perf test: Speed up some tests using perf list On my system, perf list is very slow to print the whole events. I think there's a performance issue in SDT and uprobes event listing. I noticed this issue while running perf test on x86 but it takes long to check some CoreSight event which should be skipped quickly. Anyway, some test uses perf list to check whether the required event is available before running the test. The perf list command can take an argument to specify event class or (glob) pattern. But glob pattern is only to suppress output for unmatched ones after checking all events. In this case, specifying event class is better to reduce the number of events it checks and to avoid buggy subsystems entirely. No functional changes intended. Reviewed-by: James Clark Reviewed-by: Ian Rogers Cc: German Gomez Cc: Carsten Haitzler Cc: Leo Yan Link: https://lore.kernel.org/r/20241016065654.269994-1-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/lib/coresight.sh | 2 +- tools/perf/tests/shell/lock_contention.sh | 2 +- tools/perf/tests/shell/record.sh | 2 +- tools/perf/tests/shell/test_arm_coresight.sh | 2 +- tools/perf/tests/shell/test_arm_coresight_disasm.sh | 2 +- tools/perf/tests/shell/test_arm_spe.sh | 2 +- tools/perf/tests/shell/test_arm_spe_fork.sh | 2 +- tools/perf/tests/shell/test_intel_pt.sh | 2 +- tools/perf/tests/shell/trace+probe_vfs_getname.sh | 2 +- 9 files changed, 9 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/lib/coresight.sh b/tools/perf/tests/shell/lib/coresight.sh index 11ed2c25ed91..184d62e7e5bd 100644 --- a/tools/perf/tests/shell/lib/coresight.sh +++ b/tools/perf/tests/shell/lib/coresight.sh @@ -18,7 +18,7 @@ BIN="$DIR/$TEST" # If the test tool/binary does not exist and is executable then skip the test if ! test -x "$BIN"; then exit 2; fi # If CoreSight is not available, skip the test -perf list cs_etm | grep -q cs_etm || exit 2 +perf list pmu | grep -q cs_etm || exit 2 DATD="." # If the data dir env is set then make the data dir use that instead of ./ if test -n "$PERF_TEST_CORESIGHT_DATADIR"; then diff --git a/tools/perf/tests/shell/lock_contention.sh b/tools/perf/tests/shell/lock_contention.sh index c1ec5762215b..30d195d4c62f 100755 --- a/tools/perf/tests/shell/lock_contention.sh +++ b/tools/perf/tests/shell/lock_contention.sh @@ -27,7 +27,7 @@ check() { exit fi - if ! perf list | grep -q lock:contention_begin; then + if ! perf list tracepoint | grep -q lock:contention_begin; then echo "[Skip] No lock contention tracepoints" err=2 exit diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh index 8d6366d96883..3eee72242290 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -94,7 +94,7 @@ test_per_thread() { test_register_capture() { echo "Register capture test" - if ! perf list | grep -q 'br_inst_retired.near_call' + if ! perf list pmu | grep -q 'br_inst_retired.near_call' then echo "Register capture test [Skipped missing event]" return diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh index 3302ea0b9672..6b8c4831eedc 100755 --- a/tools/perf/tests/shell/test_arm_coresight.sh +++ b/tools/perf/tests/shell/test_arm_coresight.sh @@ -12,7 +12,7 @@ glb_err=0 skip_if_no_cs_etm_event() { - perf list | grep -q 'cs_etm//' && return 0 + perf list pmu | grep -q 'cs_etm//' && return 0 # cs_etm event doesn't exist return 2 diff --git a/tools/perf/tests/shell/test_arm_coresight_disasm.sh b/tools/perf/tests/shell/test_arm_coresight_disasm.sh index af63e3757cb0..dba086a40d84 100755 --- a/tools/perf/tests/shell/test_arm_coresight_disasm.sh +++ b/tools/perf/tests/shell/test_arm_coresight_disasm.sh @@ -8,7 +8,7 @@ # the script. Test all 3 parts are working correctly by running the script. skip_if_no_cs_etm_event() { - perf list | grep -q 'cs_etm//' && return 0 + perf list pmu | grep -q 'cs_etm//' && return 0 # cs_etm event doesn't exist return 2 diff --git a/tools/perf/tests/shell/test_arm_spe.sh b/tools/perf/tests/shell/test_arm_spe.sh index 03d5c7d12ee5..6c21fb1f10d8 100755 --- a/tools/perf/tests/shell/test_arm_spe.sh +++ b/tools/perf/tests/shell/test_arm_spe.sh @@ -9,7 +9,7 @@ # German Gomez , 2021 skip_if_no_arm_spe_event() { - perf list | grep -E -q 'arm_spe_[0-9]+//' && return 0 + perf list pmu | grep -E -q 'arm_spe_[0-9]+//' && return 0 # arm_spe event doesn't exist return 2 diff --git a/tools/perf/tests/shell/test_arm_spe_fork.sh b/tools/perf/tests/shell/test_arm_spe_fork.sh index 1a7e6a82d0e3..8efeef9fb956 100755 --- a/tools/perf/tests/shell/test_arm_spe_fork.sh +++ b/tools/perf/tests/shell/test_arm_spe_fork.sh @@ -5,7 +5,7 @@ # German Gomez , 2022 skip_if_no_arm_spe_event() { - perf list | grep -E -q 'arm_spe_[0-9]+//' && return 0 + perf list pmu | grep -E -q 'arm_spe_[0-9]+//' && return 0 return 2 } diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh index 723ec501f99a..bf9017b812aa 100755 --- a/tools/perf/tests/shell/test_intel_pt.sh +++ b/tools/perf/tests/shell/test_intel_pt.sh @@ -5,7 +5,7 @@ set -e # Skip if no Intel PT -perf list | grep -q 'intel_pt//' || exit 2 +perf list pmu | grep -q 'intel_pt//' || exit 2 shelldir=$(dirname "$0") # shellcheck source=lib/waiting.sh diff --git a/tools/perf/tests/shell/trace+probe_vfs_getname.sh b/tools/perf/tests/shell/trace+probe_vfs_getname.sh index 3146a1eece07..97b4b9cd2378 100755 --- a/tools/perf/tests/shell/trace+probe_vfs_getname.sh +++ b/tools/perf/tests/shell/trace+probe_vfs_getname.sh @@ -19,7 +19,7 @@ skip_if_no_perf_trace || exit 2 . "$(dirname $0)"/lib/probe_vfs_getname.sh trace_open_vfs_getname() { - evts="$(echo "$(perf list syscalls:sys_enter_open* 2>/dev/null | grep -E 'open(at)? ' | sed -r 's/.*sys_enter_([a-z]+) +\[.*$/\1/')" | sed ':a;N;s:\n:,:g')" + evts="$(echo "$(perf list tracepoint 2>/dev/null | grep -E 'syscalls:sys_enter_open(at)? ' | sed -r 's/.*sys_enter_([a-z]+) +\[.*$/\1/')" | sed ':a;N;s:\n:,:g')" perf trace -e $evts touch $file 2>&1 | \ grep -E " +[0-9]+\.[0-9]+ +\( +[0-9]+\.[0-9]+ ms\): +touch/[0-9]+ open(at)?\((dfd: +CWD, +)?filename: +\"?${file}\"?, +flags: CREAT\|NOCTTY\|NONBLOCK\|WRONLY, +mode: +IRUGO\|IWUGO\) += +[0-9]+$" } -- cgit v1.2.3 From d08e3f14e87259b9d63bf7eea7072d1bd61392ef Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Sat, 12 Oct 2024 21:47:23 +0100 Subject: perf probe: Use the MAX_EVENT_NAME_LEN macro The MAX_EVENT_NAME_LEN macro has been defined in the kernel. Use the same definition in the tool for more readable. Signed-off-by: Leo Yan Acked-by: Masami Hiramatsu (Google) Link: https://lore.kernel.org/r/20241012204725.928794-2-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/probe-event.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 698a92875374..83b5744da50c 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -51,6 +51,9 @@ #define PERFPROBE_GROUP "probe" +/* Defined in kernel/trace/trace.h */ +#define MAX_EVENT_NAME_LEN 64 + bool probe_event_dry_run; /* Dry run flag */ struct probe_conf probe_conf = { .magic_num = DEFAULT_PROBE_MAGIC_NUM }; @@ -2841,7 +2844,7 @@ static int probe_trace_event__set_name(struct probe_trace_event *tev, bool allow_suffix) { const char *event, *group; - char buf[64]; + char buf[MAX_EVENT_NAME_LEN]; int ret; /* If probe_event or trace_event already have the name, reuse it */ -- cgit v1.2.3 From 6768faf9b70eec01c3c6d685b4f39049c561dbda Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Sat, 12 Oct 2024 21:47:24 +0100 Subject: perf probe: Check group string length In the kernel, the probe group string length is limited up to MAX_EVENT_NAME_LEN (including the NULL terminator). Check for this limitation and report an error if it is exceeded. Acked-by: Masami Hiramatsu (Google) Signed-off-by: Leo Yan Link: https://lore.kernel.org/r/20241012204725.928794-3-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/probe-event.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 83b5744da50c..2903341a4309 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2868,6 +2868,12 @@ static int probe_trace_event__set_name(struct probe_trace_event *tev, else group = PERFPROBE_GROUP; + if (strlen(group) >= MAX_EVENT_NAME_LEN) { + pr_err("Probe group string='%s' is too long (>= %d bytes)\n", + group, MAX_EVENT_NAME_LEN); + return -ENOMEM; + } + /* Get an unused new event name */ ret = get_new_event_name(buf, sizeof(buf), event, namelist, tev->point.retprobe, allow_suffix); -- cgit v1.2.3 From e34f6ac511be5347b270e42a7a23a4569ea74bc2 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Sat, 12 Oct 2024 21:47:25 +0100 Subject: perf probe: Improve log for long event name failure If a symbol name is longer than the maximum event length (64 bytes), the perf tool reports error: # perf probe -x test_cpp_mangle --add "this_is_a_very_very_long_print_data_abcdefghijklmnopqrstuvwxyz(int)" snprintf() failed: -7; the event name nbase='this_is_a_very_very_long_print_data_abcdefghijklmnopqrstuvwxyz(int)' is too long Error: Failed to add events. An information is missed in the log that the symbol name and the event name can be set separately. Especially, this is recommended for adding probe for a long symbol. This commit refines the log for reminding event syntax. After: # perf probe -x test_cpp_mangle --add "this_is_a_very_very_long_print_data_abcdefghijklmnopqrstuvwxyz(int)" snprintf() failed: -7; the event name 'this_is_a_very_very_long_print_data_abcdefghijklmnopqrstuvwxyz(int)' is too long Hint: Set a shorter event with syntax "EVENT=PROBEDEF" EVENT: Event name (max length: 64 bytes). Error: Failed to add events. Signed-off-by: Leo Yan Acked-by: Masami Hiramatsu (Google) Link: https://lore.kernel.org/r/20241012204725.928794-4-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/probe-event.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 2903341a4309..2c8d94d09e86 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2760,7 +2760,10 @@ static int get_new_event_name(char *buf, size_t len, const char *base, /* Try no suffix number */ ret = e_snprintf(buf, len, "%s%s", nbase, ret_event ? "__return" : ""); if (ret < 0) { - pr_warning("snprintf() failed: %d; the event name nbase='%s' is too long\n", ret, nbase); + pr_warning("snprintf() failed: %d; the event name '%s' is too long\n" + " Hint: Set a shorter event with syntax \"EVENT=PROBEDEF\"\n" + " EVENT: Event name (max length: %d bytes).\n", + ret, nbase, MAX_EVENT_NAME_LEN); goto out; } if (!strlist__has_entry(namelist, buf)) @@ -2780,7 +2783,10 @@ static int get_new_event_name(char *buf, size_t len, const char *base, for (i = 1; i < MAX_EVENT_INDEX; i++) { ret = e_snprintf(buf, len, "%s_%d", nbase, i); if (ret < 0) { - pr_debug("snprintf() failed: %d\n", ret); + pr_warning("Add suffix failed: %d; the event name '%s' is too long\n" + " Hint: Set a shorter event with syntax \"EVENT=PROBEDEF\"\n" + " EVENT: Event name (max length: %d bytes).\n", + ret, nbase, MAX_EVENT_NAME_LEN); goto out; } if (!strlist__has_entry(namelist, buf)) -- cgit v1.2.3 From 05a62936e6b14c005db3b0c9c7d8b93d825dd9ca Mon Sep 17 00:00:00 2001 From: Veronika Molnarova Date: Thu, 10 Oct 2024 16:48:36 +0200 Subject: perf dso: Fix symtab_type for kmod compression During the rework of the dso structure in patch ee756ef7491eafd an increment was forgotten for the symtab_type in case the data for the kernel module are compressed. This affects the probing of the kernel modules, which fails if the data are not already cached. Increment the value of the symtab_type to its compressed variant so the data could be recovered successfully. Fixes: ee756ef7491eafd7 ("perf dso: Add reference count checking and accessor functions") Signed-off-by: Veronika Molnarova Acked-by: Michael Petlan Acked-by: Namhyung Kim Tested-by: Michael Petlan Link: https://lore.kernel.org/r/20241010144836.16424-1-vmolnaro@redhat.com Signed-off-by: Namhyung Kim --- tools/perf/util/machine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index fad227b625d1..4f0ac998b0cc 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -1343,7 +1343,7 @@ static int maps__set_module_path(struct maps *maps, const char *path, struct kmo * we need to update the symtab_type if needed. */ if (m->comp && is_kmod_dso(dso)) { - dso__set_symtab_type(dso, dso__symtab_type(dso)); + dso__set_symtab_type(dso, dso__symtab_type(dso)+1); dso__set_comp(dso, m->comp); } map__put(map); -- cgit v1.2.3 From a2aa5dcc6393dc08844a3f76aa5b7694fbbf99c8 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 16 Aug 2024 16:32:44 +0100 Subject: kselftest/arm64: signal: drop now redundant GNU_SOURCE definition The definition of GNU_SOURCE was recently centralised in an upper layer kselftest Makefile, so the definition in the arm64 signal tests Makefile is no longer needed. To make things worse, since both definitions are not strictly identical, the compiler warns about it: : warning: "_GNU_SOURCE" redefined : note: this is the location of the previous definition Drop the definition in the arm64/signal Makefile. Fixes: cc937dad85ae ("selftests: centralize -D_GNU_SOURCE= to CFLAGS in lib.mk") Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20240816153251.2833702-2-andre.przywara@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/signal/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/signal/Makefile b/tools/testing/selftests/arm64/signal/Makefile index edb3613513b8..1381039fb36f 100644 --- a/tools/testing/selftests/arm64/signal/Makefile +++ b/tools/testing/selftests/arm64/signal/Makefile @@ -2,7 +2,7 @@ # Copyright (C) 2019 ARM Limited # Additional include paths needed by kselftest.h and local headers -CFLAGS += -D_GNU_SOURCE -std=gnu99 -I. +CFLAGS += -std=gnu99 -I. SRCS := $(filter-out testcases/testcases.c,$(wildcard testcases/*.c)) PROGS := $(patsubst %.c,%,$(SRCS)) -- cgit v1.2.3 From b0d80dbc378d52155c9ecf9579986edccceed3aa Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 16 Aug 2024 16:32:45 +0100 Subject: kselftest/arm64: hwcap: fix f8dp2 cpuinfo name The F8DP2 DPISA extension has a separate cpuinfo field, named accordingly. Change the erroneously placed name of "f8dp4" to "f8dp2". Fixes: 44d10c27bd75 ("kselftest/arm64: Add 2023 DPISA hwcap test coverage") Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20240816153251.2833702-3-andre.przywara@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/abi/hwcap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index f2d6007a2b98..7e95ba5fd496 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -490,7 +490,7 @@ static const struct hwcap_data { .name = "F8DP2", .at_hwcap = AT_HWCAP2, .hwcap_bit = HWCAP2_F8DP2, - .cpuinfo = "f8dp4", + .cpuinfo = "f8dp2", .sigill_fn = f8dp2_sigill, }, { -- cgit v1.2.3 From bf52ca5912c07664276c7b94db820fa2d638b681 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 16 Aug 2024 16:32:46 +0100 Subject: kselftest/arm64: mte: use proper SKIP syntax If MTE is not available on a system, we detect this early and skip all the MTE selftests. However this happens before we print the TAP plan, so tools parsing the TAP output get confused and report an error. Use the existing ksft_exit_skip() function to handle this, which uses a dummy plan to work with tools expecting proper TAP syntax, as described in the TAP specification. Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20240816153251.2833702-4-andre.przywara@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/mte/mte_common_util.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c index 00ffd34c66d3..69e4a67853c4 100644 --- a/tools/testing/selftests/arm64/mte/mte_common_util.c +++ b/tools/testing/selftests/arm64/mte/mte_common_util.c @@ -319,10 +319,9 @@ int mte_default_setup(void) unsigned long en = 0; int ret; - if (!(hwcaps2 & HWCAP2_MTE)) { - ksft_print_msg("SKIP: MTE features unavailable\n"); - return KSFT_SKIP; - } + if (!(hwcaps2 & HWCAP2_MTE)) + ksft_exit_skip("MTE features unavailable\n"); + /* Get current mte mode */ ret = prctl(PR_GET_TAGGED_ADDR_CTRL, en, 0, 0, 0); if (ret < 0) { -- cgit v1.2.3 From 0f995f22a03fef8f3bff51d22a0a78c768536814 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 16 Aug 2024 16:32:47 +0100 Subject: kselftest/arm64: mte: use string literal for printf-style functions Using pointers for the format specifier strings in printf-style functions can create potential security problems, as the number of arguments to be parsed could vary from call to call. Most compilers consequently warn about those: "format not a string literal and no format arguments [-Wformat-security]" If we only want to print a constant string, we can just use a fixed "%s" format instead, and pass the string as an argument. Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20240816153251.2833702-5-andre.przywara@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/mte/mte_common_util.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.h b/tools/testing/selftests/arm64/mte/mte_common_util.h index 2d3e71724e55..a0017a303beb 100644 --- a/tools/testing/selftests/arm64/mte/mte_common_util.h +++ b/tools/testing/selftests/arm64/mte/mte_common_util.h @@ -77,13 +77,13 @@ static inline void evaluate_test(int err, const char *msg) { switch (err) { case KSFT_PASS: - ksft_test_result_pass(msg); + ksft_test_result_pass("%s", msg); break; case KSFT_FAIL: - ksft_test_result_fail(msg); + ksft_test_result_fail("%s", msg); break; case KSFT_SKIP: - ksft_test_result_skip(msg); + ksft_test_result_skip("%s", msg); break; default: ksft_test_result_error("Unknown return code %d from %s", -- cgit v1.2.3 From 7e893dc81de3e342156389ea0b83ec7d07f25281 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 16 Aug 2024 16:32:49 +0100 Subject: kselftest/arm64: mte: fix printf type warnings about __u64 When printing the signal context's PC, we use a "%lx" format specifier, which matches the common userland (glibc's) definition of uint64_t as an "unsigned long". However the structure in question is defined in a kernel uapi header, which uses a self defined __u64 type, and the arm64 kernel headers define this using "int-ll64.h", so it becomes an "unsigned long long". This mismatch leads to the usual compiler warning. The common fix would be to use "PRIx64", but because this is defined by the userland's toolchain libc headers, it wouldn't match as well. Since we know the exact type of __u64, just use "%llx" here instead, to silence this warning. This also fixes a more severe typo: "$lx" is not a valid format specifier. Fixes: 191e678bdc9b ("kselftest/arm64: Log unexpected asynchronous MTE faults") Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20240816153251.2833702-7-andre.przywara@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/mte/mte_common_util.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c index 69e4a67853c4..9380edca29c7 100644 --- a/tools/testing/selftests/arm64/mte/mte_common_util.c +++ b/tools/testing/selftests/arm64/mte/mte_common_util.c @@ -38,7 +38,7 @@ void mte_default_handler(int signum, siginfo_t *si, void *uc) if (cur_mte_cxt.trig_si_code == si->si_code) cur_mte_cxt.fault_valid = true; else - ksft_print_msg("Got unexpected SEGV_MTEAERR at pc=$lx, fault addr=%lx\n", + ksft_print_msg("Got unexpected SEGV_MTEAERR at pc=%llx, fault addr=%lx\n", ((ucontext_t *)uc)->uc_mcontext.pc, addr); return; @@ -64,7 +64,7 @@ void mte_default_handler(int signum, siginfo_t *si, void *uc) exit(1); } } else if (signum == SIGBUS) { - ksft_print_msg("INFO: SIGBUS signal at pc=%lx, fault addr=%lx, si_code=%lx\n", + ksft_print_msg("INFO: SIGBUS signal at pc=%llx, fault addr=%lx, si_code=%x\n", ((ucontext_t *)uc)->uc_mcontext.pc, addr, si->si_code); if ((cur_mte_cxt.trig_range >= 0 && addr >= MT_CLEAR_TAG(cur_mte_cxt.trig_addr) && -- cgit v1.2.3 From 4716f719202e900b52f5f2270ac16b6a8ae40a47 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 16 Aug 2024 16:32:50 +0100 Subject: kselftest/arm64: mte: fix printf type warnings about pointers When printing the value of a pointer, we should not use an integer format specifier, but the dedicated "%p" instead. Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20240816153251.2833702-8-andre.przywara@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/mte/check_buffer_fill.c | 4 ++-- tools/testing/selftests/arm64/mte/mte_common_util.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/mte/check_buffer_fill.c b/tools/testing/selftests/arm64/mte/check_buffer_fill.c index 1dbbbd47dd50..2ee7f114d7fa 100644 --- a/tools/testing/selftests/arm64/mte/check_buffer_fill.c +++ b/tools/testing/selftests/arm64/mte/check_buffer_fill.c @@ -91,7 +91,7 @@ static int check_buffer_underflow_by_byte(int mem_type, int mode, for (j = 0; j < sizes[i]; j++) { if (ptr[j] != '1') { err = true; - ksft_print_msg("Buffer is not filled at index:%d of ptr:0x%lx\n", + ksft_print_msg("Buffer is not filled at index:%d of ptr:0x%p\n", j, ptr); break; } @@ -189,7 +189,7 @@ static int check_buffer_overflow_by_byte(int mem_type, int mode, for (j = 0; j < sizes[i]; j++) { if (ptr[j] != '1') { err = true; - ksft_print_msg("Buffer is not filled at index:%d of ptr:0x%lx\n", + ksft_print_msg("Buffer is not filled at index:%d of ptr:0x%p\n", j, ptr); break; } diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c index 9380edca29c7..17fbe5cfe472 100644 --- a/tools/testing/selftests/arm64/mte/mte_common_util.c +++ b/tools/testing/selftests/arm64/mte/mte_common_util.c @@ -100,7 +100,7 @@ void *mte_insert_tags(void *ptr, size_t size) int align_size; if (!ptr || (unsigned long)(ptr) & MT_ALIGN_GRANULE) { - ksft_print_msg("FAIL: Addr=%lx: invalid\n", ptr); + ksft_print_msg("FAIL: Addr=%p: invalid\n", ptr); return NULL; } align_size = MT_ALIGN_UP(size); @@ -112,7 +112,7 @@ void *mte_insert_tags(void *ptr, size_t size) void mte_clear_tags(void *ptr, size_t size) { if (!ptr || (unsigned long)(ptr) & MT_ALIGN_GRANULE) { - ksft_print_msg("FAIL: Addr=%lx: invalid\n", ptr); + ksft_print_msg("FAIL: Addr=%p: invalid\n", ptr); return; } size = MT_ALIGN_UP(size); -- cgit v1.2.3 From 96dddb7b9406259baace9a1831e8da155311be6f Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 16 Aug 2024 16:32:51 +0100 Subject: kselftest/arm64: mte: fix printf type warnings about longs When checking MTE tags, we print some diagnostic messages when the tests fail. Some variables uses there are "longs", however we only use "%x" for the format specifier. Update the format specifiers to "%lx", to match the variable types they are supposed to print. Fixes: f3b2a26ca78d ("kselftest/arm64: Verify mte tag inclusion via prctl") Signed-off-by: Andre Przywara Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20240816153251.2833702-9-andre.przywara@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/mte/check_tags_inclusion.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/mte/check_tags_inclusion.c b/tools/testing/selftests/arm64/mte/check_tags_inclusion.c index 2b1425b92b69..a3d1e23fe02a 100644 --- a/tools/testing/selftests/arm64/mte/check_tags_inclusion.c +++ b/tools/testing/selftests/arm64/mte/check_tags_inclusion.c @@ -65,7 +65,7 @@ static int check_single_included_tags(int mem_type, int mode) ptr = mte_insert_tags(ptr, BUFFER_SIZE); /* Check tag value */ if (MT_FETCH_TAG((uintptr_t)ptr) == tag) { - ksft_print_msg("FAIL: wrong tag = 0x%x with include mask=0x%x\n", + ksft_print_msg("FAIL: wrong tag = 0x%lx with include mask=0x%x\n", MT_FETCH_TAG((uintptr_t)ptr), MT_INCLUDE_VALID_TAG(tag)); result = KSFT_FAIL; @@ -97,7 +97,7 @@ static int check_multiple_included_tags(int mem_type, int mode) ptr = mte_insert_tags(ptr, BUFFER_SIZE); /* Check tag value */ if (MT_FETCH_TAG((uintptr_t)ptr) < tag) { - ksft_print_msg("FAIL: wrong tag = 0x%x with include mask=0x%x\n", + ksft_print_msg("FAIL: wrong tag = 0x%lx with include mask=0x%lx\n", MT_FETCH_TAG((uintptr_t)ptr), MT_INCLUDE_VALID_TAGS(excl_mask)); result = KSFT_FAIL; -- cgit v1.2.3 From 86f45d0f17d2f4d4857a8553673add9c71fb45aa Mon Sep 17 00:00:00 2001 From: Athira Rajeev Date: Thu, 10 Oct 2024 20:21:06 +0530 Subject: tools/perf/pmu-events/powerpc: Add support for compat events in json perf list picks the events supported for specific platform from pmu-events/arch/powerpc/. Example power10 events are in pmu-events/arch/powerpc/power10, power9 events are part of pmu-events/arch/powerpc/power9. The decision of which platform to pick is determined based on PVR value in powerpc. The PVR value is matched from pmu-events/arch/powerpc/mapfile.csv Example: Format: PVR,Version,JSON/file/pathname,Type 0x004[bcd][[:xdigit:]]{4},1,power8,core 0x0066[[:xdigit:]]{4},1,power8,core 0x004e[[:xdigit:]]{4},1,power9,core 0x0080[[:xdigit:]]{4},1,power10,core 0x0082[[:xdigit:]]{4},1,power10,core The code gets the PVR from system using get_cpuid_str function in arch/powerpc/util/headers.c ( from SPRN_PVR ) and compares with value from mapfile.csv In case of compat mode, say when partition is booted in a power9 mode when the system is a power10, add an entry to pick the ISA architected events from "pmu-events/arch/powerpc/compat". Add json file generic-events.json which will contain these events which is supported in compat mode. Suggested-by: Madhavan Srinivasan Signed-off-by: Athira Rajeev Tested-by: Disha Goel Cc: akanksha@linux.ibm.com Cc: hbathini@linux.ibm.com Cc: kjain@linux.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20241010145107.51211-1-atrajeev@linux.vnet.ibm.com Signed-off-by: Namhyung Kim --- .../arch/powerpc/compat/generic-events.json | 117 +++++++++++++++++++++ tools/perf/pmu-events/arch/powerpc/mapfile.csv | 1 + 2 files changed, 118 insertions(+) create mode 100644 tools/perf/pmu-events/arch/powerpc/compat/generic-events.json (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/powerpc/compat/generic-events.json b/tools/perf/pmu-events/arch/powerpc/compat/generic-events.json new file mode 100644 index 000000000000..6f5e8efcb098 --- /dev/null +++ b/tools/perf/pmu-events/arch/powerpc/compat/generic-events.json @@ -0,0 +1,117 @@ +[ + { + "EventCode": "0x600F4", + "EventName": "PM_CYC", + "BriefDescription": "Processor cycles." + }, + { + "EventCode": "0x100F2", + "EventName": "PM_CYC_INST_CMPL", + "BriefDescription": "1 or more ppc insts finished" + }, + { + "EventCode": "0x100f4", + "EventName": "PM_FLOP_CMPL", + "BriefDescription": "Floating Point Operations Finished." + }, + { + "EventCode": "0x100F6", + "EventName": "PM_L1_ITLB_MISS", + "BriefDescription": "Number of I-ERAT reloads." + }, + { + "EventCode": "0x100F8", + "EventName": "PM_NO_INST_AVAIL", + "BriefDescription": "Number of cycles the ICT has no itags assigned to this thread." + }, + { + "EventCode": "0x100fc", + "EventName": "PM_LD_CMPL", + "BriefDescription": "Load instruction completed." + }, + { + "EventCode": "0x200F0", + "EventName": "PM_ST_CMPL", + "BriefDescription": "Stores completed from S2Q (2nd-level store queue)." + }, + { + "EventCode": "0x200F2", + "EventName": "PM_INST_DISP", + "BriefDescription": "PowerPC instruction dispatched." + }, + { + "EventCode": "0x200F4", + "EventName": "PM_RUN_CYC", + "BriefDescription": "Processor cycles gated by the run latch." + }, + { + "EventCode": "0x200F6", + "EventName": "PM_L1_DTLB_RELOAD", + "BriefDescription": "DERAT Reloaded due to a DERAT miss." + }, + { + "EventCode": "0x200FA", + "EventName": "PM_BR_TAKEN_CMPL", + "BriefDescription": "Branch Taken instruction completed." + }, + { + "EventCode": "0x200FC", + "EventName": "PM_L1_ICACHE_MISS", + "BriefDescription": "Demand instruction cache miss." + }, + { + "EventCode": "0x200FE", + "EventName": "PM_L1_RELOAD_FROM_MEM", + "BriefDescription": "L1 Dcache reload from memory" + }, + { + "EventCode": "0x300F0", + "EventName": "PM_ST_MISS_L1", + "BriefDescription": "Store Missed L1" + }, + { + "EventCode": "0x300FC", + "EventName": "PM_DTLB_MISS", + "BriefDescription": "Data PTEG reload" + }, + { + "EventCode": "0x300FE", + "EventName": "PM_DATA_FROM_L3MISS", + "BriefDescription": "Demand LD - L3 Miss (not L2 hit and not L3 hit)" + }, + { + "EventCode": "0x400F0", + "EventName": "PM_LD_MISS_L1", + "BriefDescription": "L1 Dcache load miss" + }, + { + "EventCode": "0x400F2", + "EventName": "PM_CYC_INST_DISP", + "BriefDescription": "Cycle when instruction(s) dispatched." + }, + { + "EventCode": "0x400F6", + "EventName": "PM_BR_MPRED_CMPL", + "BriefDescription": "A mispredicted branch completed. Includes direction and target." + }, + { + "EventCode": "0x400FA", + "EventName": "PM_RUN_INST_CMPL", + "BriefDescription": "PowerPC instruction completed while the run latch is set." + }, + { + "EventCode": "0x400FC", + "EventName": "PM_ITLB_MISS", + "BriefDescription": "Instruction TLB reload (after a miss), all page sizes. Includes only demand misses." + }, + { + "EventCode": "0x400fe", + "EventName": "PM_LD_NOT_CACHED", + "BriefDescription": "Load data not cached." + }, + { + "EventCode": "0x500fa", + "EventName": "PM_INST_CMPL", + "BriefDescription": "Instructions." + } +] diff --git a/tools/perf/pmu-events/arch/powerpc/mapfile.csv b/tools/perf/pmu-events/arch/powerpc/mapfile.csv index 4d5e9138d4cc..cbd3cb443784 100644 --- a/tools/perf/pmu-events/arch/powerpc/mapfile.csv +++ b/tools/perf/pmu-events/arch/powerpc/mapfile.csv @@ -16,3 +16,4 @@ 0x004e[[:xdigit:]]{4},1,power9,core 0x0080[[:xdigit:]]{4},1,power10,core 0x0082[[:xdigit:]]{4},1,power10,core +0x00ffffff,1,compat,core -- cgit v1.2.3 From 54f9aa109245717df95d8dd2a1f42a3f42abdd3b Mon Sep 17 00:00:00 2001 From: Athira Rajeev Date: Thu, 10 Oct 2024 20:21:07 +0530 Subject: tools/perf/powerpc/util: Add support to handle compatible mode PVR for perf json events perf list picks the events supported for specific platform from pmu-events/arch/powerpc/. Example power10 events are in pmu-events/arch/powerpc/power10, power9 events are part of pmu-events/arch/powerpc/power9. The decision of which platform to pick is determined based on PVR value in powerpc. The PVR value is matched from pmu-events/arch/powerpc/mapfile.csv Example: Format: PVR,Version,JSON/file/pathname,Type 0x004[bcd][[:xdigit:]]{4},1,power8,core 0x0066[[:xdigit:]]{4},1,power8,core 0x004e[[:xdigit:]]{4},1,power9,core 0x0080[[:xdigit:]]{4},1,power10,core 0x0082[[:xdigit:]]{4},1,power10,core The code gets the PVR from system using get_cpuid_str function in arch/powerpc/util/headers.c ( from SPRN_PVR ) and compares with value from mapfile.csv In case of compat mode, say when partition is booted in a power9 mode when the system is a power10, this picks incorrectly. Because PVR will point to power10 where as it should pick events from power9 folder. To support generic events, add new folder pmu-events/arch/powerpc/compat to contain the ISA architected events which is supported in compat mode. Also return 0x00ffffff as pvr when booted in compat mode. Based on this pvr value, json will pick events from pmu-events/arch/powerpc/compat Suggested-by: Madhavan Srinivasan Signed-off-by: Athira Rajeev Tested-by: Disha Goel Cc: akanksha@linux.ibm.com Cc: hbathini@linux.ibm.com Cc: kjain@linux.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20241010145107.51211-2-atrajeev@linux.vnet.ibm.com Signed-off-by: Namhyung Kim --- tools/perf/arch/powerpc/util/header.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c index 6b00efd53638..251cdbf58a4d 100644 --- a/tools/perf/arch/powerpc/util/header.c +++ b/tools/perf/arch/powerpc/util/header.c @@ -10,6 +10,18 @@ #include "utils_header.h" #include "metricgroup.h" #include +#include + +static bool is_compat_mode(void) +{ + u64 base_platform = getauxval(AT_BASE_PLATFORM); + u64 platform = getauxval(AT_PLATFORM); + + if (!strcmp((char *)platform, (char *)base_platform)) + return false; + + return true; +} int get_cpuid(char *buffer, size_t sz) @@ -33,8 +45,26 @@ char * get_cpuid_str(struct perf_pmu *pmu __maybe_unused) { char *bufp; + unsigned long pvr; + + /* + * IBM Power System supports compatible mode. That is + * Nth generation platform can support previous generation + * OS in a mode called compatibile mode. For ex. LPAR can be + * booted in a Power9 mode when the system is a Power10. + * + * In the compatible mode, care must be taken when generating + * PVR value. When read, PVR will be of the AT_BASE_PLATFORM + * To support generic events, return 0x00ffffff as pvr when + * booted in compat mode. Based on this pvr value, json will + * pick events from pmu-events/arch/powerpc/compat + */ + if (!is_compat_mode()) + pvr = mfspr(SPRN_PVR); + else + pvr = 0x00ffffff; - if (asprintf(&bufp, "0x%.8lx", mfspr(SPRN_PVR)) < 0) + if (asprintf(&bufp, "0x%.8lx", pvr) < 0) bufp = NULL; return bufp; -- cgit v1.2.3 From 1280f012e06e1555de47e3c3a9be898d8cbda5fb Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 16:56:21 -0700 Subject: perf disasm: Fix capstone memory leak The insn argument passed to cs_disasm needs freeing. To support accurately having count, add an additional free_count variable. Fixes: c5d60de1813a ("perf annotate: Add support to use libcapstone in powerpc") Signed-off-by: Ian Rogers Reviewed-by: James Clark Cc: David S. Miller Cc: Steinar H. Gunderson Cc: Alexander Lobakin Cc: Masami Hiramatsu (Google) Cc: Kajol Jain Cc: Athira Rajeev Cc: Hemant Kumar Link: https://lore.kernel.org/r/20241016235622.52166-2-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/disasm.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c index f05ba7739c1e..2c8063660f2e 100644 --- a/tools/perf/util/disasm.c +++ b/tools/perf/util/disasm.c @@ -1627,12 +1627,12 @@ static int symbol__disassemble_capstone(char *filename, struct symbol *sym, u64 start = map__rip_2objdump(map, sym->start); u64 len; u64 offset; - int i, count; + int i, count, free_count; bool is_64bit = false; bool needs_cs_close = false; u8 *buf = NULL; csh handle; - cs_insn *insn; + cs_insn *insn = NULL; char disasm_buf[512]; struct disasm_line *dl; @@ -1664,7 +1664,7 @@ static int symbol__disassemble_capstone(char *filename, struct symbol *sym, needs_cs_close = true; - count = cs_disasm(handle, buf, len, start, len, &insn); + free_count = count = cs_disasm(handle, buf, len, start, len, &insn); for (i = 0, offset = 0; i < count; i++) { int printed; @@ -1702,8 +1702,11 @@ static int symbol__disassemble_capstone(char *filename, struct symbol *sym, } out: - if (needs_cs_close) + if (needs_cs_close) { cs_close(&handle); + if (free_count > 0) + cs_free(insn, free_count); + } free(buf); return count < 0 ? count : 0; -- cgit v1.2.3 From 4585038b8e186252141ef86e9f0d8e97f11dce8d Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 16:56:22 -0700 Subject: perf probe: Fix libdw memory leak Add missing dwarf_cfi_end to free memory associated with probe_finder cfi_eh which is allocated and owned via a call to dwarf_getcfi_elf. Confusingly cfi_dbg shouldn't be freed as its memory is owned by the passed in debuginfo struct. Add comments to highlight this. This addresses leak sanitizer issues seen in: tools/perf/tests/shell/test_uprobe_from_different_cu.sh Fixes: 270bde1e76f4 ("perf probe: Search both .eh_frame and .debug_frame sections for probe location") Signed-off-by: Ian Rogers Cc: David S. Miller Cc: Steinar H. Gunderson Cc: Alexander Lobakin Cc: Masami Hiramatsu (Google) Cc: Kajol Jain Cc: Athira Rajeev Cc: Hemant Kumar Link: https://lore.kernel.org/r/20241016235622.52166-3-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/probe-finder.c | 4 ++++ tools/perf/util/probe-finder.h | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 630e16c54ed5..d6b902899940 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -1379,6 +1379,10 @@ int debuginfo__find_trace_events(struct debuginfo *dbg, if (ret >= 0 && tf.pf.skip_empty_arg) ret = fill_empty_trace_arg(pev, tf.tevs, tf.ntevs); +#if _ELFUTILS_PREREQ(0, 142) + dwarf_cfi_end(tf.pf.cfi_eh); +#endif + if (ret < 0 || tf.ntevs == 0) { for (i = 0; i < tf.ntevs; i++) clear_probe_trace_event(&tf.tevs[i]); diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h index 3add5ff516e1..724db829b49e 100644 --- a/tools/perf/util/probe-finder.h +++ b/tools/perf/util/probe-finder.h @@ -64,9 +64,9 @@ struct probe_finder { /* For variable searching */ #if _ELFUTILS_PREREQ(0, 142) - /* Call Frame Information from .eh_frame */ + /* Call Frame Information from .eh_frame. Owned by this struct. */ Dwarf_CFI *cfi_eh; - /* Call Frame Information from .debug_frame */ + /* Call Frame Information from .debug_frame. Not owned. */ Dwarf_CFI *cfi_dbg; #endif Dwarf_Op *fb_ops; /* Frame base attribute */ -- cgit v1.2.3 From 58fc358a3e2d484697afbae86496fc5982f222f3 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 17 Oct 2024 10:53:50 -0700 Subject: perf color: Add printf format checking and resolve issues Add printf format checking to vararg printf routines in color.h. Resolve build errors/bugs that are found through this checking. Signed-off-by: Ian Rogers Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Leo Yan Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Tim Chen Cc: John Garry Link: https://lore.kernel.org/r/20241017175356.783793-2-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-sched.c | 2 +- tools/perf/builtin-trace.c | 2 +- tools/perf/util/arm-spe.c | 2 +- tools/perf/util/color.h | 9 +++++---- tools/perf/util/intel-bts.c | 2 +- tools/perf/util/intel-pt.c | 2 +- tools/perf/util/s390-cpumsf.c | 2 +- tools/perf/util/s390-sample-raw.c | 8 ++++---- 8 files changed, 15 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index c053074b98b4..7049c60ebf77 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1743,7 +1743,7 @@ static int map_switch_event(struct perf_sched *sched, struct evsel *evsel, } if (sched->map.comp && new_cpu) - color_fprintf(stdout, color, " (CPU %d)", this_cpu); + color_fprintf(stdout, color, " (CPU %d)", this_cpu.cpu); if (proceed != 1) { color_fprintf(stdout, color, "\n"); diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 0b30297b4ecb..748b061f8678 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1873,7 +1873,7 @@ static int trace__process_event(struct trace *trace, struct machine *machine, switch (event->header.type) { case PERF_RECORD_LOST: color_fprintf(trace->output, PERF_COLOR_RED, - "LOST %" PRIu64 " events!\n", event->lost.lost); + "LOST %" PRIu64 " events!\n", (u64)event->lost.lost); ret = machine__process_lost_event(machine, event, sample); break; default: diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index c424e5b9a11d..856cc36f33d7 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -122,7 +122,7 @@ static void arm_spe_dump(struct arm_spe *spe __maybe_unused, else pkt_len = 1; printf("."); - color_fprintf(stdout, color, " %08x: ", pos); + color_fprintf(stdout, color, " %08zx: ", pos); for (i = 0; i < pkt_len; i++) color_fprintf(stdout, color, " %02x", buf[i]); for (; i < 16; i++) diff --git a/tools/perf/util/color.h b/tools/perf/util/color.h index aecf56dae73f..b2f37de305f6 100644 --- a/tools/perf/util/color.h +++ b/tools/perf/util/color.h @@ -2,6 +2,7 @@ #ifndef __PERF_COLOR_H #define __PERF_COLOR_H +#include #include #include @@ -37,11 +38,11 @@ int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty) int color_vsnprintf(char *bf, size_t size, const char *color, const char *fmt, va_list args); int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args); -int color_fprintf(FILE *fp, const char *color, const char *fmt, ...); -int color_snprintf(char *bf, size_t size, const char *color, const char *fmt, ...); +int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) __printf(3, 4); +int color_snprintf(char *bf, size_t size, const char *color, const char *fmt, ...) __printf(4, 5); int value_color_snprintf(char *bf, size_t size, const char *fmt, double value); -int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...); -int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...); +int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...) __printf(3, 4); +int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...) __printf(3, 4); int percent_color_fprintf(FILE *fp, const char *fmt, double percent); const char *get_percent_color(double percent); diff --git a/tools/perf/util/intel-bts.c b/tools/perf/util/intel-bts.c index 27d9b5c9fec8..3ea82d5e8d2e 100644 --- a/tools/perf/util/intel-bts.c +++ b/tools/perf/util/intel-bts.c @@ -100,7 +100,7 @@ static void intel_bts_dump(struct intel_bts *bts __maybe_unused, else sz = len; printf("."); - color_fprintf(stdout, color, " %08x: ", pos); + color_fprintf(stdout, color, " %08zx: ", pos); for (i = 0; i < sz; i++) color_fprintf(stdout, color, " %02x", buf[i]); for (; i < br_sz; i++) diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index fd2597613f3d..3fe67bf652b6 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -249,7 +249,7 @@ static void intel_pt_dump(struct intel_pt *pt __maybe_unused, else pkt_len = 1; printf("."); - color_fprintf(stdout, color, " %08x: ", pos); + color_fprintf(stdout, color, " %08zx: ", pos); for (i = 0; i < pkt_len; i++) color_fprintf(stdout, color, " %02x", buf[i]); for (; i < 16; i++) diff --git a/tools/perf/util/s390-cpumsf.c b/tools/perf/util/s390-cpumsf.c index 73846b73d0cf..30638653ad2d 100644 --- a/tools/perf/util/s390-cpumsf.c +++ b/tools/perf/util/s390-cpumsf.c @@ -345,7 +345,7 @@ static bool s390_cpumsf_trailer_show(const char *color, size_t pos, } color_fprintf(stdout, color, " [%#08zx] Trailer %c%c%c bsdes:%d" " dsdes:%d Overflow:%lld Time:%#llx\n" - "\t\tC:%d TOD:%#lx\n", + "\t\tC:%d TOD:%#llx\n", pos, te->f ? 'F' : ' ', te->a ? 'A' : ' ', diff --git a/tools/perf/util/s390-sample-raw.c b/tools/perf/util/s390-sample-raw.c index 53383e97ec9d..335217bb532b 100644 --- a/tools/perf/util/s390-sample-raw.c +++ b/tools/perf/util/s390-sample-raw.c @@ -98,12 +98,12 @@ static void s390_cpumcfdg_dumptrail(const char *color, size_t offset, te.res2 = be32_to_cpu(tep->res2); color_fprintf(stdout, color, " [%#08zx] Trailer:%c%c%c%c%c" - " Cfvn:%d Csvn:%d Speed:%d TOD:%#llx\n", + " Cfvn:%d Csvn:%d Speed:%d TOD:%#lx\n", offset, te.clock_base ? 'T' : ' ', te.speed ? 'S' : ' ', te.mtda ? 'M' : ' ', te.caca ? 'C' : ' ', te.lcda ? 'L' : ' ', te.cfvn, te.csvn, te.cpu_speed, te.timestamp); - color_fprintf(stdout, color, "\t\t1:%lx 2:%lx 3:%lx TOD-Base:%#llx" + color_fprintf(stdout, color, "\t\t1:%lx 2:%lx 3:%lx TOD-Base:%#lx" " Type:%x\n\n", te.progusage1, te.progusage2, te.progusage3, te.tod_base, te.mach_type); @@ -205,7 +205,7 @@ static void s390_cpumcfdg_dump(struct perf_pmu *pmu, struct perf_sample *sample) char *ev_name = get_counter_name(ce.set, i, pmu); color_fprintf(stdout, color, - "\tCounter:%03d %s Value:%#018lx\n", i, + "\tCounter:%03zd %s Value:%#018"PRIx64"\n", i, ev_name ?: "", be64_to_cpu(*p)); free(ev_name); } @@ -260,7 +260,7 @@ static void s390_pai_all_dump(struct evsel *evsel, struct perf_sample *sample) ev_name = get_counter_name(evsel->core.attr.config, pai_data.event_nr, evsel->pmu); - color_fprintf(stdout, color, "\tCounter:%03d %s Value:%#018lx\n", + color_fprintf(stdout, color, "\tCounter:%03d %s Value:%#018"PRIx64"\n", pai_data.event_nr, ev_name ?: "", pai_data.event_val); free(ev_name); -- cgit v1.2.3 From 9809b2b1f23d0b7e0c6154ee0e94445e584435d4 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 17 Oct 2024 10:53:51 -0700 Subject: perf stat: Fix/add parameter names for print_metric The print_metric parameter names were rearranged, fix and add comments in the stat-shadow callers to ensure they are correct. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Leo Yan Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Tim Chen Cc: John Garry Link: https://lore.kernel.org/r/20241017175356.783793-3-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/stat-shadow.c | 55 +++++++++++++++++++++++++------------------ tools/perf/util/stat.h | 6 +++-- 2 files changed, 36 insertions(+), 25 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 6227de848083..512890d50b69 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -196,17 +196,21 @@ static void print_ratio(struct perf_stat_config *config, const struct evsel *evsel, int aggr_idx, double numerator, struct perf_stat_output_ctx *out, enum stat_type denominator_type, - const double color_ratios[3], const char *unit) + const double color_ratios[3], const char *_unit) { double denominator = find_stat(evsel, aggr_idx, denominator_type); + double ratio = 0; + const char *color = NULL; + const char *fmt = NULL; + const char *unit = NULL; if (numerator && denominator) { - double ratio = numerator / denominator * 100.0; - const char *color = get_ratio_color(color_ratios, ratio); - - out->print_metric(config, out->ctx, color, "%7.2f%%", unit, ratio); - } else - out->print_metric(config, out->ctx, NULL, NULL, unit, 0); + ratio = numerator / denominator * 100.0; + color = get_ratio_color(color_ratios, ratio); + fmt = "%7.2f%%"; + unit = _unit; + } + out->print_metric(config, out->ctx, color, fmt, unit, ratio); } static void print_stalled_cycles_front(struct perf_stat_config *config, @@ -320,14 +324,15 @@ static void print_instructions(struct perf_stat_config *config, find_stat(evsel, aggr_idx, STAT_STALLED_CYCLES_BACK)); if (cycles) { - print_metric(config, ctxp, NULL, "%7.2f ", "insn per cycle", - instructions / cycles); - } else - print_metric(config, ctxp, NULL, NULL, "insn per cycle", 0); + print_metric(config, ctxp, /*color=*/NULL, "%7.2f ", "insn per cycle", + instructions / cycles); + } else { + print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, "insn per cycle", 0); + } if (max_stalled && instructions) { out->new_line(config, ctxp); - print_metric(config, ctxp, NULL, "%7.2f ", "stalled cycles per insn", + print_metric(config, ctxp, /*color=*/NULL, "%7.2f ", "stalled cycles per insn", max_stalled / instructions); } } @@ -342,9 +347,10 @@ static void print_cycles(struct perf_stat_config *config, if (cycles && nsecs) { double ratio = cycles / nsecs; - out->print_metric(config, out->ctx, NULL, "%8.3f", "GHz", ratio); - } else - out->print_metric(config, out->ctx, NULL, NULL, "GHz", 0); + out->print_metric(config, out->ctx, /*color=*/NULL, "%8.3f", "GHz", ratio); + } else { + out->print_metric(config, out->ctx, /*color=*/NULL, /*fmt=*/NULL, "GHz", 0); + } } static void print_nsecs(struct perf_stat_config *config, @@ -357,10 +363,11 @@ static void print_nsecs(struct perf_stat_config *config, double wall_time = avg_stats(&walltime_nsecs_stats); if (wall_time) { - print_metric(config, ctxp, NULL, "%8.3f", "CPUs utilized", + print_metric(config, ctxp, /*color=*/NULL, "%8.3f", "CPUs utilized", nsecs / (wall_time * evsel->scale)); - } else - print_metric(config, ctxp, NULL, NULL, "CPUs utilized", 0); + } else { + print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, "CPUs utilized", 0); + } } static int prepare_metric(const struct metric_expr *mexp, @@ -542,12 +549,12 @@ static void generic_metric(struct perf_stat_config *config, ratio); } } else { - print_metric(config, ctxp, color, /*unit=*/NULL, + print_metric(config, ctxp, color, /*fmt=*/NULL, out->force_header ? (metric_name ?: evsel->name) : "", 0); } } else { - print_metric(config, ctxp, color, /*unit=*/NULL, + print_metric(config, ctxp, color, /*fmt=*/NULL, out->force_header ? (metric_name ?: evsel->name) : "", 0); } @@ -718,9 +725,11 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config, if (unit != ' ') snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit); - print_metric(config, ctxp, NULL, "%8.3f", unit_buf, ratio); - } else + print_metric(config, ctxp, /*color=*/NULL, "%8.3f", + unit_buf, ratio); + } else { num = 0; + } } } @@ -728,7 +737,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config, &num, NULL, out, metric_events); if (num == 0) - print_metric(config, ctxp, NULL, NULL, NULL, 0); + print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, /*unit=*/NULL, 0); } /** diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h index fd7a187551bd..a5f3d7d00101 100644 --- a/tools/perf/util/stat.h +++ b/tools/perf/util/stat.h @@ -155,8 +155,10 @@ extern struct stats walltime_nsecs_stats; extern struct rusage_stats ru_stats; typedef void (*print_metric_t)(struct perf_stat_config *config, - void *ctx, const char *color, const char *unit, - const char *fmt, double val); + void *ctx, const char *color, + const char *fmt, + const char *unit, + double val); typedef void (*new_line_t)(struct perf_stat_config *config, void *ctx); /* Used to print the display name of the Default metricgroup for now. */ -- cgit v1.2.3 From 1133e7f7dc53edcb26c0e07d345f7285c3246efa Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 17 Oct 2024 10:53:52 -0700 Subject: perf stat: Display "none" for NaN with metric only json Return earlier for an empty unit case. If snprintf of the fmt doesn't produce digits between vals and ends, as happens with NaN, make the value "none" as happens in print_metric_end. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Leo Yan Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Tim Chen Cc: John Garry Link: https://lore.kernel.org/r/20241017175356.783793-4-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/stat-display.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index ef0ca8cd802d..a137b377efa4 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -610,19 +610,22 @@ static void print_metric_only_json(struct perf_stat_config *config __maybe_unuse { struct outstate *os = ctx; FILE *out = os->fh; - char buf[64], *vals, *ends; + char buf[64], *ends; char tbuf[1024]; + const char *vals; if (!valid_only_metric(unit)) return; unit = fixunit(tbuf, os->evsel, unit); + if (!unit[0]) + return; snprintf(buf, sizeof(buf), fmt ?: "", val); - ends = vals = skip_spaces(buf); + vals = ends = skip_spaces(buf); while (isdigit(*ends) || *ends == '.') ends++; *ends = 0; - if (!unit[0] || !vals[0]) - return; + if (!vals[0]) + vals = "none"; fprintf(out, "%s\"%s\" : \"%s\"", os->first ? "" : ", ", unit, vals); os->first = false; } -- cgit v1.2.3 From e1cc918b6cfd12064f9b085f4c5b059d183bd8c6 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 17 Oct 2024 10:53:53 -0700 Subject: perf stat: Drop metric-unit if unit is NULL Avoid cases like: ``` $ perf stat -a -M topdownl1 -j -I 1000 ... {"interval" : 11.127757275, "counter-value" : "85715898.000000", "unit" : "", "event" : "IDQ.MITE_UOPS", "event-runtime" : 988376123, "pcnt-running" : 100.00, "metric-value" : "0.000000", "metric-unit" : "(null)"} ... ``` If there is no unit then drop the metric-value too as: Suggested-by: Tim Chen Signed-off-by: Ian Rogers Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Leo Yan Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Tim Chen Cc: John Garry Link: https://lore.kernel.org/r/20241017175356.783793-5-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/stat-display.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index a137b377efa4..c6d33010ed22 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -471,8 +471,8 @@ static void print_metric_json(struct perf_stat_config *config __maybe_unused, struct outstate *os = ctx; FILE *out = os->fh; - fprintf(out, "\"metric-value\" : \"%f\", ", val); - fprintf(out, "\"metric-unit\" : \"%s\"", unit); + if (unit) + fprintf(out, "\"metric-value\" : \"%f\", \"metric-unit\" : \"%s\"", val, unit); if (!config->metric_only) fprintf(out, "}"); } -- cgit v1.2.3 From 37b77ae954167f0ed1bf3dd610b319eeb43cf854 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 17 Oct 2024 10:53:54 -0700 Subject: perf stat: Change color to threshold in print_metric Colors don't mean things in CSV and JSON output, switch to a threshold enum value that the standard output can convert to a color. Updating the CSV and JSON output will be later changes. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Leo Yan Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Tim Chen Cc: John Garry Link: https://lore.kernel.org/r/20241017175356.783793-6-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/iostat.c | 2 +- tools/perf/builtin-script.c | 6 +-- tools/perf/util/stat-display.c | 40 +++++++++++---- tools/perf/util/stat-shadow.c | 105 +++++++++++++++++++------------------- tools/perf/util/stat.h | 12 ++++- 5 files changed, 97 insertions(+), 68 deletions(-) (limited to 'tools') diff --git a/tools/perf/arch/x86/util/iostat.c b/tools/perf/arch/x86/util/iostat.c index df7b5dfcc26a..366b44d0bb7e 100644 --- a/tools/perf/arch/x86/util/iostat.c +++ b/tools/perf/arch/x86/util/iostat.c @@ -444,7 +444,7 @@ void iostat_print_metric(struct perf_stat_config *config, struct evsel *evsel, iostat_value = (count->val - prev_count_val) / ((double) count->run / count->ena); } - out->print_metric(config, out->ctx, NULL, "%8.0f", iostat_metric, + out->print_metric(config, out->ctx, METRIC_THRESHOLD_UNKNOWN, "%8.0f", iostat_metric, iostat_value / (256 * 1024)); } diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index a644787fa9e1..8c5d5cecfba4 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -2136,11 +2136,11 @@ struct metric_ctx { }; static void script_print_metric(struct perf_stat_config *config __maybe_unused, - void *ctx, const char *color, - const char *fmt, - const char *unit, double val) + void *ctx, enum metric_threshold_classify thresh, + const char *fmt, const char *unit, double val) { struct metric_ctx *mctx = ctx; + const char *color = metric_threshold_classify__color(thresh); if (!fmt) return; diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index c6d33010ed22..5974aaead95f 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -73,6 +73,19 @@ static const char *aggr_header_std[] = { [AGGR_GLOBAL] = "" }; +const char *metric_threshold_classify__color(enum metric_threshold_classify thresh) +{ + const char * const colors[] = { + "", /* unknown */ + PERF_COLOR_RED, /* bad */ + PERF_COLOR_MAGENTA, /* nearly bad */ + PERF_COLOR_YELLOW, /* less good */ + PERF_COLOR_GREEN, /* good */ + }; + static_assert(ARRAY_SIZE(colors) - 1 == METRIC_THRESHOLD_GOOD, "missing enum value"); + return colors[thresh]; +} + static void print_running_std(struct perf_stat_config *config, u64 run, u64 ena) { if (run != ena) @@ -405,13 +418,14 @@ static void do_new_line_std(struct perf_stat_config *config, } static void print_metric_std(struct perf_stat_config *config, - void *ctx, const char *color, const char *fmt, - const char *unit, double val) + void *ctx, enum metric_threshold_classify thresh, + const char *fmt, const char *unit, double val) { struct outstate *os = ctx; FILE *out = os->fh; int n; bool newline = os->newline; + const char *color = metric_threshold_classify__color(thresh); os->newline = false; @@ -443,7 +457,7 @@ static void new_line_csv(struct perf_stat_config *config, void *ctx) static void print_metric_csv(struct perf_stat_config *config __maybe_unused, void *ctx, - const char *color __maybe_unused, + enum metric_threshold_classify thresh __maybe_unused, const char *fmt, const char *unit, double val) { struct outstate *os = ctx; @@ -464,7 +478,7 @@ static void print_metric_csv(struct perf_stat_config *config __maybe_unused, static void print_metric_json(struct perf_stat_config *config __maybe_unused, void *ctx, - const char *color __maybe_unused, + enum metric_threshold_classify thresh __maybe_unused, const char *fmt __maybe_unused, const char *unit, double val) { @@ -559,13 +573,14 @@ static const char *fixunit(char *buf, struct evsel *evsel, } static void print_metric_only(struct perf_stat_config *config, - void *ctx, const char *color, const char *fmt, - const char *unit, double val) + void *ctx, enum metric_threshold_classify thresh, + const char *fmt, const char *unit, double val) { struct outstate *os = ctx; FILE *out = os->fh; char buf[1024], str[1024]; unsigned mlen = config->metric_only_len; + const char *color = metric_threshold_classify__color(thresh); if (!valid_only_metric(unit)) return; @@ -582,7 +597,8 @@ static void print_metric_only(struct perf_stat_config *config, } static void print_metric_only_csv(struct perf_stat_config *config __maybe_unused, - void *ctx, const char *color __maybe_unused, + void *ctx, + enum metric_threshold_classify thresh __maybe_unused, const char *fmt, const char *unit, double val) { @@ -604,7 +620,8 @@ static void print_metric_only_csv(struct perf_stat_config *config __maybe_unused } static void print_metric_only_json(struct perf_stat_config *config __maybe_unused, - void *ctx, const char *color __maybe_unused, + void *ctx, + enum metric_threshold_classify thresh __maybe_unused, const char *fmt, const char *unit, double val) { @@ -636,7 +653,8 @@ static void new_line_metric(struct perf_stat_config *config __maybe_unused, } static void print_metric_header(struct perf_stat_config *config, - void *ctx, const char *color __maybe_unused, + void *ctx, + enum metric_threshold_classify thresh __maybe_unused, const char *fmt __maybe_unused, const char *unit, double val __maybe_unused) { @@ -810,7 +828,7 @@ static void printout(struct perf_stat_config *config, struct outstate *os, if (run == 0 || ena == 0 || counter->counts->scaled == -1) { if (config->metric_only) { - pm(config, os, NULL, "", "", 0); + pm(config, os, METRIC_THRESHOLD_UNKNOWN, "", "", 0); return; } @@ -865,7 +883,7 @@ static void printout(struct perf_stat_config *config, struct outstate *os, perf_stat__print_shadow_stats(config, counter, uval, aggr_idx, &out, &config->metric_events); } else { - pm(config, os, /*color=*/NULL, /*format=*/NULL, /*unit=*/"", /*val=*/0); + pm(config, os, METRIC_THRESHOLD_UNKNOWN, /*format=*/NULL, /*unit=*/"", /*val=*/0); } if (!config->metric_only) { diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 512890d50b69..ada787947e16 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -137,18 +137,14 @@ static enum stat_type evsel__stat_type(struct evsel *evsel) return STAT_NONE; } -static const char *get_ratio_color(const double ratios[3], double val) +static enum metric_threshold_classify get_ratio_thresh(const double ratios[3], double val) { - const char *color = PERF_COLOR_NORMAL; + assert(ratios[0] > ratios[1]); + assert(ratios[1] > ratios[2]); - if (val > ratios[0]) - color = PERF_COLOR_RED; - else if (val > ratios[1]) - color = PERF_COLOR_MAGENTA; - else if (val > ratios[2]) - color = PERF_COLOR_YELLOW; - - return color; + return val > ratios[1] + ? (val > ratios[0] ? METRIC_THRESHOLD_BAD : METRIC_THRESHOLD_NEARLY_BAD) + : (val > ratios[2] ? METRIC_THRESHOLD_LESS_GOOD : METRIC_THRESHOLD_GOOD); } static double find_stat(const struct evsel *evsel, int aggr_idx, enum stat_type type) @@ -196,21 +192,21 @@ static void print_ratio(struct perf_stat_config *config, const struct evsel *evsel, int aggr_idx, double numerator, struct perf_stat_output_ctx *out, enum stat_type denominator_type, - const double color_ratios[3], const char *_unit) + const double thresh_ratios[3], const char *_unit) { double denominator = find_stat(evsel, aggr_idx, denominator_type); double ratio = 0; - const char *color = NULL; + enum metric_threshold_classify thresh = METRIC_THRESHOLD_UNKNOWN; const char *fmt = NULL; const char *unit = NULL; if (numerator && denominator) { ratio = numerator / denominator * 100.0; - color = get_ratio_color(color_ratios, ratio); + thresh = get_ratio_thresh(thresh_ratios, ratio); fmt = "%7.2f%%"; unit = _unit; } - out->print_metric(config, out->ctx, color, fmt, unit, ratio); + out->print_metric(config, out->ctx, thresh, fmt, unit, ratio); } static void print_stalled_cycles_front(struct perf_stat_config *config, @@ -218,9 +214,9 @@ static void print_stalled_cycles_front(struct perf_stat_config *config, int aggr_idx, double stalled, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {50.0, 30.0, 10.0}; + const double thresh_ratios[3] = {50.0, 30.0, 10.0}; - print_ratio(config, evsel, aggr_idx, stalled, out, STAT_CYCLES, color_ratios, + print_ratio(config, evsel, aggr_idx, stalled, out, STAT_CYCLES, thresh_ratios, "frontend cycles idle"); } @@ -229,9 +225,9 @@ static void print_stalled_cycles_back(struct perf_stat_config *config, int aggr_idx, double stalled, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {75.0, 50.0, 20.0}; + const double thresh_ratios[3] = {75.0, 50.0, 20.0}; - print_ratio(config, evsel, aggr_idx, stalled, out, STAT_CYCLES, color_ratios, + print_ratio(config, evsel, aggr_idx, stalled, out, STAT_CYCLES, thresh_ratios, "backend cycles idle"); } @@ -240,9 +236,9 @@ static void print_branch_miss(struct perf_stat_config *config, int aggr_idx, double misses, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {20.0, 10.0, 5.0}; + const double thresh_ratios[3] = {20.0, 10.0, 5.0}; - print_ratio(config, evsel, aggr_idx, misses, out, STAT_BRANCHES, color_ratios, + print_ratio(config, evsel, aggr_idx, misses, out, STAT_BRANCHES, thresh_ratios, "of all branches"); } @@ -251,9 +247,9 @@ static void print_l1d_miss(struct perf_stat_config *config, int aggr_idx, double misses, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {20.0, 10.0, 5.0}; + const double thresh_ratios[3] = {20.0, 10.0, 5.0}; - print_ratio(config, evsel, aggr_idx, misses, out, STAT_L1_DCACHE, color_ratios, + print_ratio(config, evsel, aggr_idx, misses, out, STAT_L1_DCACHE, thresh_ratios, "of all L1-dcache accesses"); } @@ -262,9 +258,9 @@ static void print_l1i_miss(struct perf_stat_config *config, int aggr_idx, double misses, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {20.0, 10.0, 5.0}; + const double thresh_ratios[3] = {20.0, 10.0, 5.0}; - print_ratio(config, evsel, aggr_idx, misses, out, STAT_L1_ICACHE, color_ratios, + print_ratio(config, evsel, aggr_idx, misses, out, STAT_L1_ICACHE, thresh_ratios, "of all L1-icache accesses"); } @@ -273,9 +269,9 @@ static void print_ll_miss(struct perf_stat_config *config, int aggr_idx, double misses, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {20.0, 10.0, 5.0}; + const double thresh_ratios[3] = {20.0, 10.0, 5.0}; - print_ratio(config, evsel, aggr_idx, misses, out, STAT_LL_CACHE, color_ratios, + print_ratio(config, evsel, aggr_idx, misses, out, STAT_LL_CACHE, thresh_ratios, "of all LL-cache accesses"); } @@ -284,9 +280,9 @@ static void print_dtlb_miss(struct perf_stat_config *config, int aggr_idx, double misses, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {20.0, 10.0, 5.0}; + const double thresh_ratios[3] = {20.0, 10.0, 5.0}; - print_ratio(config, evsel, aggr_idx, misses, out, STAT_DTLB_CACHE, color_ratios, + print_ratio(config, evsel, aggr_idx, misses, out, STAT_DTLB_CACHE, thresh_ratios, "of all dTLB cache accesses"); } @@ -295,9 +291,9 @@ static void print_itlb_miss(struct perf_stat_config *config, int aggr_idx, double misses, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {20.0, 10.0, 5.0}; + const double thresh_ratios[3] = {20.0, 10.0, 5.0}; - print_ratio(config, evsel, aggr_idx, misses, out, STAT_ITLB_CACHE, color_ratios, + print_ratio(config, evsel, aggr_idx, misses, out, STAT_ITLB_CACHE, thresh_ratios, "of all iTLB cache accesses"); } @@ -306,9 +302,9 @@ static void print_cache_miss(struct perf_stat_config *config, int aggr_idx, double misses, struct perf_stat_output_ctx *out) { - static const double color_ratios[3] = {20.0, 10.0, 5.0}; + const double thresh_ratios[3] = {20.0, 10.0, 5.0}; - print_ratio(config, evsel, aggr_idx, misses, out, STAT_CACHE_REFS, color_ratios, + print_ratio(config, evsel, aggr_idx, misses, out, STAT_CACHE_REFS, thresh_ratios, "of all cache refs"); } @@ -324,16 +320,16 @@ static void print_instructions(struct perf_stat_config *config, find_stat(evsel, aggr_idx, STAT_STALLED_CYCLES_BACK)); if (cycles) { - print_metric(config, ctxp, /*color=*/NULL, "%7.2f ", "insn per cycle", - instructions / cycles); + print_metric(config, ctxp, METRIC_THRESHOLD_UNKNOWN, "%7.2f ", + "insn per cycle", instructions / cycles); } else { - print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, "insn per cycle", 0); + print_metric(config, ctxp, METRIC_THRESHOLD_UNKNOWN, /*fmt=*/NULL, + "insn per cycle", 0); } - if (max_stalled && instructions) { out->new_line(config, ctxp); - print_metric(config, ctxp, /*color=*/NULL, "%7.2f ", "stalled cycles per insn", - max_stalled / instructions); + print_metric(config, ctxp, METRIC_THRESHOLD_UNKNOWN, "%7.2f ", + "stalled cycles per insn", max_stalled / instructions); } } @@ -347,9 +343,11 @@ static void print_cycles(struct perf_stat_config *config, if (cycles && nsecs) { double ratio = cycles / nsecs; - out->print_metric(config, out->ctx, /*color=*/NULL, "%8.3f", "GHz", ratio); + out->print_metric(config, out->ctx, METRIC_THRESHOLD_UNKNOWN, "%8.3f", + "GHz", ratio); } else { - out->print_metric(config, out->ctx, /*color=*/NULL, /*fmt=*/NULL, "GHz", 0); + out->print_metric(config, out->ctx, METRIC_THRESHOLD_UNKNOWN, /*fmt=*/NULL, + "GHz", 0); } } @@ -363,10 +361,11 @@ static void print_nsecs(struct perf_stat_config *config, double wall_time = avg_stats(&walltime_nsecs_stats); if (wall_time) { - print_metric(config, ctxp, /*color=*/NULL, "%8.3f", "CPUs utilized", + print_metric(config, ctxp, METRIC_THRESHOLD_UNKNOWN, "%8.3f", "CPUs utilized", nsecs / (wall_time * evsel->scale)); } else { - print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, "CPUs utilized", 0); + print_metric(config, ctxp, METRIC_THRESHOLD_UNKNOWN, /*fmt=*/NULL, + "CPUs utilized", 0); } } @@ -500,7 +499,7 @@ static void generic_metric(struct perf_stat_config *config, double ratio, scale, threshold; int i; void *ctxp = out->ctx; - const char *color = NULL; + enum metric_threshold_classify thresh = METRIC_THRESHOLD_UNKNOWN; pctx = expr__ctx_new(); if (!pctx) @@ -523,8 +522,8 @@ static void generic_metric(struct perf_stat_config *config, if (metric_threshold && expr__parse(&threshold, pctx, metric_threshold) == 0 && !isnan(threshold)) { - color = fpclassify(threshold) == FP_ZERO - ? PERF_COLOR_GREEN : PERF_COLOR_RED; + thresh = fpclassify(threshold) == FP_ZERO + ? METRIC_THRESHOLD_GOOD : METRIC_THRESHOLD_BAD; } if (metric_unit && metric_name) { @@ -539,22 +538,22 @@ static void generic_metric(struct perf_stat_config *config, scnprintf(metric_bf, sizeof(metric_bf), "%s %s", unit, metric_name); - print_metric(config, ctxp, color, "%8.1f", + print_metric(config, ctxp, thresh, "%8.1f", metric_bf, ratio); } else { - print_metric(config, ctxp, color, "%8.2f", + print_metric(config, ctxp, thresh, "%8.2f", metric_name ? metric_name : out->force_header ? evsel->name : "", ratio); } } else { - print_metric(config, ctxp, color, /*fmt=*/NULL, + print_metric(config, ctxp, thresh, /*fmt=*/NULL, out->force_header ? (metric_name ?: evsel->name) : "", 0); } } else { - print_metric(config, ctxp, color, /*fmt=*/NULL, + print_metric(config, ctxp, thresh, /*fmt=*/NULL, out->force_header ? (metric_name ?: evsel->name) : "", 0); } @@ -725,7 +724,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config, if (unit != ' ') snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit); - print_metric(config, ctxp, /*color=*/NULL, "%8.3f", + print_metric(config, ctxp, METRIC_THRESHOLD_UNKNOWN, "%8.3f", unit_buf, ratio); } else { num = 0; @@ -736,8 +735,10 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config, perf_stat__print_shadow_stats_metricgroup(config, evsel, aggr_idx, &num, NULL, out, metric_events); - if (num == 0) - print_metric(config, ctxp, /*color=*/NULL, /*fmt=*/NULL, /*unit=*/NULL, 0); + if (num == 0) { + print_metric(config, ctxp, METRIC_THRESHOLD_UNKNOWN, + /*fmt=*/NULL, /*unit=*/NULL, 0); + } } /** diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h index a5f3d7d00101..6f8cff3cd39a 100644 --- a/tools/perf/util/stat.h +++ b/tools/perf/util/stat.h @@ -154,8 +154,18 @@ struct evlist; extern struct stats walltime_nsecs_stats; extern struct rusage_stats ru_stats; +enum metric_threshold_classify { + METRIC_THRESHOLD_UNKNOWN, + METRIC_THRESHOLD_BAD, + METRIC_THRESHOLD_NEARLY_BAD, + METRIC_THRESHOLD_LESS_GOOD, + METRIC_THRESHOLD_GOOD, +}; +const char *metric_threshold_classify__color(enum metric_threshold_classify thresh); + typedef void (*print_metric_t)(struct perf_stat_config *config, - void *ctx, const char *color, + void *ctx, + enum metric_threshold_classify thresh, const char *fmt, const char *unit, double val); -- cgit v1.2.3 From f9825601aa5e8f45a21ead5dd9b48e7f5119b3b0 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 17 Oct 2024 10:53:55 -0700 Subject: perf stat: Add metric-threshold to json output When the threshold isn't unknown add a value to the json like: "metric-threshold" : "good" A more complete example: ``` $ perf stat -a -j -I 1000 {"interval" : 1.001089747, "counter-value" : "16045.281449", "unit" : "msec", "event" : "cpu-clock", "event-runtime" : 16045355135, "pcnt-running" : 100.00, "metric-value" : "16.045281", "metric-unit" : "CPUs utilized"} {"interval" : 1.001089747, "counter-value" : "10003.000000", "unit" : "", "event" : "context-switches", "event-runtime" : 16045314844, "pcnt-running" : 100.00, "metric-value" : "623.423156", "metric-unit" : "/sec"} {"interval" : 1.001089747, "counter-value" : "328.000000", "unit" : "", "event" : "cpu-migrations", "event-runtime" : 16045321403, "pcnt-running" : 100.00, "metric-value" : "20.442147", "metric-unit" : "/sec"} {"interval" : 1.001089747, "counter-value" : "20114.000000", "unit" : "", "event" : "page-faults", "event-runtime" : 16045355927, "pcnt-running" : 100.00, "metric-value" : "1.253577", "metric-unit" : "K/sec"} {"interval" : 1.001089747, "counter-value" : "4066679471.000000", "unit" : "", "event" : "instructions", "event-runtime" : 16045369123, "pcnt-running" : 100.00, "metric-value" : "1.628330", "metric-unit" : "insn per cycle"} {"interval" : 1.001089747, "counter-value" : "2497454658.000000", "unit" : "", "event" : "cycles", "event-runtime" : 16045374810, "pcnt-running" : 100.00, "metric-value" : "0.155650", "metric-unit" : "GHz"} {"interval" : 1.001089747, "counter-value" : "914974294.000000", "unit" : "", "event" : "branches", "event-runtime" : 16045379877, "pcnt-running" : 100.00, "metric-value" : "57.024509", "metric-unit" : "M/sec"} {"interval" : 1.001089747, "counter-value" : "9237201.000000", "unit" : "", "event" : "branch-misses", "event-runtime" : 16045375017, "pcnt-running" : 100.00, "metric-value" : "1.009559", "metric-unit" : "of all branches", "metric-threshold" : "good"} {"interval" : 1.001089747, "event-runtime" : 16045397172, "pcnt-running" : 100.00, "metricgroup" : "TopdownL1"} {"interval" : 1.001089747, "metric-value" : "22.036686", "metric-unit" : "% tma_backend_bound", "metric-threshold" : "bad"} {"interval" : 1.001089747, "metric-value" : "7.610161", "metric-unit" : "% tma_bad_speculation", "metric-threshold" : "good"} {"interval" : 1.001089747, "metric-value" : "36.729687", "metric-unit" : "% tma_frontend_bound", "metric-threshold" : "bad"} {"interval" : 1.001089747, "metric-value" : "33.623465", "metric-unit" : "% tma_retiring"} ... ``` Signed-off-by: Ian Rogers Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Leo Yan Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Tim Chen Cc: John Garry Link: https://lore.kernel.org/r/20241017175356.783793-7-irogers@google.com Signed-off-by: Namhyung Kim --- .../perf/tests/shell/lib/perf_json_output_lint.py | 5 ++++- tools/perf/util/stat-display.c | 22 ++++++++++++++++++++-- 2 files changed, 24 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/lib/perf_json_output_lint.py b/tools/perf/tests/shell/lib/perf_json_output_lint.py index abc1fd737782..8ddb85586131 100644 --- a/tools/perf/tests/shell/lib/perf_json_output_lint.py +++ b/tools/perf/tests/shell/lib/perf_json_output_lint.py @@ -57,6 +57,7 @@ def check_json_output(expected_items): 'interval': lambda x: isfloat(x), 'metric-unit': lambda x: True, 'metric-value': lambda x: isfloat(x), + 'metric-threshold': lambda x: x in ['unknown', 'good', 'less good', 'nearly bad', 'bad'], 'metricgroup': lambda x: True, 'node': lambda x: True, 'pcnt-running': lambda x: isfloat(x), @@ -68,13 +69,15 @@ def check_json_output(expected_items): for item in json.loads(input): if expected_items != -1: count = len(item) - if count != expected_items and count >= 1 and count <= 6 and 'metric-value' in item: + if count != expected_items and count >= 1 and count <= 7 and 'metric-value' in item: # Events that generate >1 metric may have isolated metric # values and possibly other prefixes like interval, core, # aggregate-number, or event-runtime/pcnt-running from multiplexing. pass elif count != expected_items and count >= 1 and count <= 5 and 'metricgroup' in item: pass + elif count == expected_items + 1 and 'metric-threshold' in item: + pass elif count != expected_items: raise RuntimeError(f'wrong number of fields. counted {count} expected {expected_items}' f' in \'{item}\'') diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index 5974aaead95f..53dcdf07f5a2 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -86,6 +86,19 @@ const char *metric_threshold_classify__color(enum metric_threshold_classify thre return colors[thresh]; } +static const char *metric_threshold_classify__str(enum metric_threshold_classify thresh) +{ + const char * const strs[] = { + "unknown", + "bad", + "nearly bad", + "less good", + "good", + }; + static_assert(ARRAY_SIZE(strs) - 1 == METRIC_THRESHOLD_GOOD, "missing enum value"); + return strs[thresh]; +} + static void print_running_std(struct perf_stat_config *config, u64 run, u64 ena) { if (run != ena) @@ -478,15 +491,20 @@ static void print_metric_csv(struct perf_stat_config *config __maybe_unused, static void print_metric_json(struct perf_stat_config *config __maybe_unused, void *ctx, - enum metric_threshold_classify thresh __maybe_unused, + enum metric_threshold_classify thresh, const char *fmt __maybe_unused, const char *unit, double val) { struct outstate *os = ctx; FILE *out = os->fh; - if (unit) + if (unit) { fprintf(out, "\"metric-value\" : \"%f\", \"metric-unit\" : \"%s\"", val, unit); + if (thresh != METRIC_THRESHOLD_UNKNOWN) { + fprintf(out, ", \"metric-threshold\" : \"%s\"", + metric_threshold_classify__str(thresh)); + } + } if (!config->metric_only) fprintf(out, "}"); } -- cgit v1.2.3 From 17df33fe22c71e0b07567e3c3c35c678b08e8689 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 17 Oct 2024 10:53:56 -0700 Subject: perf stat: Disable metric thresholds for CSV and JSON metric-only mode These modes don't use the threshold, so don't compute it saving time and potentially reducing events. Signed-off-by: Ian Rogers Cc: Yicong Yang Cc: Weilin Wang Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Leo Yan Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Tim Chen Cc: John Garry Link: https://lore.kernel.org/r/20241017175356.783793-8-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index b5e18853982c..7639ecda6c05 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2561,6 +2561,14 @@ int cmd_stat(int argc, const char **argv) goto out; } + if (stat_config.csv_output || (stat_config.metric_only && stat_config.json_output)) { + /* + * Current CSV and metric-only JSON output doesn't display the + * metric threshold so don't compute it. + */ + stat_config.metric_no_threshold = true; + } + if (stat_config.walltime_run_table && stat_config.run_count <= 1) { fprintf(stderr, "--table is only supported with -r\n"); parse_options_usage(stat_usage, stat_options, "r", 1); -- cgit v1.2.3 From 314909f13cc12d47c468602c37dace512d225eeb Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Sat, 12 Oct 2024 15:14:32 +0100 Subject: perf probe: Correct demangled symbols in C++ program An issue can be observed when probe C++ demangled symbol with steps: # nm test_cpp_mangle | grep print_data 0000000000000c94 t _GLOBAL__sub_I__Z10print_datai 0000000000000afc T _Z10print_datai 0000000000000b38 T _Z10print_dataR5Point # perf probe -x /home/niayan01/test_cpp_mangle -F --demangle ... print_data(Point&) print_data(int) ... # perf --debug verbose=3 probe -x test_cpp_mangle --add "test=print_data(int)" probe-definition(0): test=print_data(int) symbol:print_data(int) file:(null) line:0 offset:0 return:0 lazy:(null) 0 arguments Open Debuginfo file: /home/niayan01/test_cpp_mangle Try to find probe point from debuginfo. Symbol print_data(int) address found : afc Matched function: print_data [2ccf] Probe point found: print_data+0 Found 1 probe_trace_events. Opening /sys/kernel/tracing//uprobe_events write=1 Opening /sys/kernel/tracing//README write=0 Writing event: p:probe_test_cpp_mangle/test /home/niayan01/test_cpp_mangle:0xb38 ... When tried to probe symbol "print_data(int)", the log shows: Symbol print_data(int) address found : afc The found address is 0xafc - which is right with verifying the output result from nm. Afterwards when write event, the command uses offset 0xb38 in the last log, which is a wrong address. The dwarf_diename() gets a common function name, in above case, it returns string "print_data". As a result, the tool parses the offset based on the common name. This leads to probe at the wrong symbol "print_data(Point&)". To fix the issue, use the die_get_linkage_name() function to retrieve the distinct linkage name - this is the mangled name for the C++ case. Based on this unique name, the tool can get a correct offset for probing. Based on DWARF doc, it is possible the linkage name is missed in the DIE, it rolls back to use dwarf_diename(). After: # perf --debug verbose=3 probe -x test_cpp_mangle --add "test=print_data(int)" probe-definition(0): test=print_data(int) symbol:print_data(int) file:(null) line:0 offset:0 return:0 lazy:(null) 0 arguments Open Debuginfo file: /home/niayan01/test_cpp_mangle Try to find probe point from debuginfo. Symbol print_data(int) address found : afc Matched function: print_data [2d06] Probe point found: print_data+0 Found 1 probe_trace_events. Opening /sys/kernel/tracing//uprobe_events write=1 Opening /sys/kernel/tracing//README write=0 Writing event: p:probe_test_cpp_mangle/test /home/niayan01/test_cpp_mangle:0xafc Added new event: probe_test_cpp_mangle:test (on print_data(int) in /home/niayan01/test_cpp_mangle) You can now use it in all perf tools, such as: perf record -e probe_test_cpp_mangle:test -aR sleep 1 # perf --debug verbose=3 probe -x test_cpp_mangle --add "test2=print_data(Point&)" probe-definition(0): test2=print_data(Point&) symbol:print_data(Point&) file:(null) line:0 offset:0 return:0 lazy:(null) 0 arguments Open Debuginfo file: /home/niayan01/test_cpp_mangle Try to find probe point from debuginfo. Symbol print_data(Point&) address found : b38 Matched function: print_data [2ccf] Probe point found: print_data+0 Found 1 probe_trace_events. Opening /sys/kernel/tracing//uprobe_events write=1 Parsing probe_events: p:probe_test_cpp_mangle/test /home/niayan01/test_cpp_mangle:0x0000000000000afc Group:probe_test_cpp_mangle Event:test probe:p Opening /sys/kernel/tracing//README write=0 Writing event: p:probe_test_cpp_mangle/test2 /home/niayan01/test_cpp_mangle:0xb38 Added new event: probe_test_cpp_mangle:test2 (on print_data(Point&) in /home/niayan01/test_cpp_mangle) You can now use it in all perf tools, such as: perf record -e probe_test_cpp_mangle:test2 -aR sleep 1 Fixes: fb1587d869a3 ("perf probe: List probes with line number and file name") Signed-off-by: Leo Yan Acked-by: Masami Hiramatsu (Google) Link: https://lore.kernel.org/r/20241012141432.877894-1-leo.yan@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/probe-finder.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index d6b902899940..a30f88ed0300 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -1587,8 +1587,21 @@ int debuginfo__find_probe_point(struct debuginfo *dbg, u64 addr, /* Find a corresponding function (name, baseline and baseaddr) */ if (die_find_realfunc(&cudie, (Dwarf_Addr)addr, &spdie)) { - /* Get function entry information */ - func = basefunc = dwarf_diename(&spdie); + /* + * Get function entry information. + * + * As described in the document DWARF Debugging Information + * Format Version 5, section 2.22 Linkage Names, "mangled names, + * are used in various ways, ... to distinguish multiple + * entities that have the same name". + * + * Firstly try to get distinct linkage name, if fail then + * rollback to get associated name in DIE. + */ + func = basefunc = die_get_linkage_name(&spdie); + if (!func) + func = basefunc = dwarf_diename(&spdie); + if (!func || die_entrypc(&spdie, &baseaddr) != 0 || dwarf_decl_line(&spdie, &baseline) != 0) { -- cgit v1.2.3 From 8519e4f44c2af72214dc029f0334be068466e71f Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 14 Oct 2024 17:01:56 -0700 Subject: perf test: Add a shell wrapper for "Setup struct perf_event_attr" The "Setup struct perf_event_attr" test in attr.c does a bunch of directory finding to set up running a python test that in general is more brittle than similar logic we have in shell tests. Add a shell test that invokes and runs the tests in the python attr.py script. Signed-off-by: Ian Rogers Tested-by: Athira Rajeev Cc: Stephen Rothwell Cc: zhaimingbing Cc: Howard Chu Cc: Ze Gao Cc: Weilin Wang Cc: James Clark Cc: Leo Yan Cc: Thomas Richter Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241015000158.871828-2-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/attr.sh | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100755 tools/perf/tests/shell/attr.sh (limited to 'tools') diff --git a/tools/perf/tests/shell/attr.sh b/tools/perf/tests/shell/attr.sh new file mode 100755 index 000000000000..e094f3baffb7 --- /dev/null +++ b/tools/perf/tests/shell/attr.sh @@ -0,0 +1,22 @@ +#!/bin/bash +# Perf attribute expectations test +# SPDX-License-Identifier: GPL-2.0 + +err=0 + +cleanup() { + trap - EXIT TERM INT +} + +trap_cleanup() { + echo "Unexpected signal in ${FUNCNAME[1]}" + cleanup + exit 1 +} +trap trap_cleanup EXIT TERM INT + +shelldir=$(dirname "$0") +perf_path=$(which perf) +python "${shelldir}"/../attr.py -d "${shelldir}"/../attr -v -p "$perf_path" +cleanup +exit $err -- cgit v1.2.3 From 3a447031f5fc21c4e112a5ca52d091d1ef33aeb6 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 14 Oct 2024 17:01:57 -0700 Subject: perf test: Remove C test wrapper for attr.py Remove the C wrapper now a shell script wrapper exists. Move perf_event_attr dumping functions to evsel.c and reduce the scope of variables/defines. Use fprintf to avoid snprintf complexities in WRITE_ASS. Add __SANE_USERSPACE_TYPES__ to evsel.c to fix format flag issues on PowerPC triggered by moving attr.c functions to evsel.c. Signed-off-by: Ian Rogers Tested-by: Athira Rajeev Cc: Stephen Rothwell Cc: zhaimingbing Cc: Howard Chu Cc: Ze Gao Cc: Weilin Wang Cc: James Clark Cc: Leo Yan Cc: Thomas Richter Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241015000158.871828-3-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/perf.c | 2 - tools/perf/tests/Build | 1 - tools/perf/tests/attr.c | 218 ---------------------------------------- tools/perf/tests/builtin-test.c | 1 - tools/perf/util/evsel.c | 127 ++++++++++++++++++++++- tools/perf/util/util.h | 7 -- 6 files changed, 123 insertions(+), 233 deletions(-) delete mode 100644 tools/perf/tests/attr.c (limited to 'tools') diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 4def800f4089..a2987f2cfe1a 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -542,8 +542,6 @@ int main(int argc, const char **argv) } cmd = argv[0]; - test_attr__init(); - /* * We use PATH to find perf commands, but we prepend some higher * precedence paths: the "--exec-path" option, the PERF_EXEC_PATH diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index a771e4928247..03cbdf7c50a0 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -4,7 +4,6 @@ perf-test-y += builtin-test.o perf-test-y += tests-scripts.o perf-test-y += parse-events.o perf-test-y += dso-data.o -perf-test-y += attr.o perf-test-y += vmlinux-kallsyms.o perf-test-$(CONFIG_LIBTRACEEVENT) += openat-syscall.o perf-test-$(CONFIG_LIBTRACEEVENT) += openat-syscall-all-cpus.o diff --git a/tools/perf/tests/attr.c b/tools/perf/tests/attr.c deleted file mode 100644 index 97e1bdd6ec0e..000000000000 --- a/tools/perf/tests/attr.c +++ /dev/null @@ -1,218 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * The struct perf_event_attr test support. - * - * This test is embedded inside into perf directly and is governed - * by the PERF_TEST_ATTR environment variable and hook inside - * sys_perf_event_open function. - * - * The general idea is to store 'struct perf_event_attr' details for - * each event created within single perf command. Each event details - * are stored into separate text file. Once perf command is finished - * these files can be checked for values we expect for command. - * - * Besides 'struct perf_event_attr' values we also store 'fd' and - * 'group_fd' values to allow checking for groups created. - * - * This all is triggered by setting PERF_TEST_ATTR environment variable. - * It must contain name of existing directory with access and write - * permissions. All the event text files are stored there. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "event.h" -#include "util.h" -#include "tests.h" -#include "pmus.h" - -#define ENV "PERF_TEST_ATTR" - -static char *dir; -static bool ready; - -void test_attr__init(void) -{ - dir = getenv(ENV); - test_attr__enabled = (dir != NULL); -} - -#define BUFSIZE 1024 - -#define __WRITE_ASS(str, fmt, data) \ -do { \ - char buf[BUFSIZE]; \ - size_t size; \ - \ - size = snprintf(buf, BUFSIZE, #str "=%"fmt "\n", data); \ - if (1 != fwrite(buf, size, 1, file)) { \ - perror("test attr - failed to write event file"); \ - fclose(file); \ - return -1; \ - } \ - \ -} while (0) - -#define WRITE_ASS(field, fmt) __WRITE_ASS(field, fmt, attr->field) - -static int store_event(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu, - int fd, int group_fd, unsigned long flags) -{ - FILE *file; - char path[PATH_MAX]; - - if (!ready) - return 0; - - snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir, - attr->type, attr->config, fd); - - file = fopen(path, "w+"); - if (!file) { - perror("test attr - failed to open event file"); - return -1; - } - - if (fprintf(file, "[event-%d-%llu-%d]\n", - attr->type, attr->config, fd) < 0) { - perror("test attr - failed to write event file"); - fclose(file); - return -1; - } - - /* syscall arguments */ - __WRITE_ASS(fd, "d", fd); - __WRITE_ASS(group_fd, "d", group_fd); - __WRITE_ASS(cpu, "d", cpu.cpu); - __WRITE_ASS(pid, "d", pid); - __WRITE_ASS(flags, "lu", flags); - - /* struct perf_event_attr */ - WRITE_ASS(type, PRIu32); - WRITE_ASS(size, PRIu32); - WRITE_ASS(config, "llu"); - WRITE_ASS(sample_period, "llu"); - WRITE_ASS(sample_type, "llu"); - WRITE_ASS(read_format, "llu"); - WRITE_ASS(disabled, "d"); - WRITE_ASS(inherit, "d"); - WRITE_ASS(pinned, "d"); - WRITE_ASS(exclusive, "d"); - WRITE_ASS(exclude_user, "d"); - WRITE_ASS(exclude_kernel, "d"); - WRITE_ASS(exclude_hv, "d"); - WRITE_ASS(exclude_idle, "d"); - WRITE_ASS(mmap, "d"); - WRITE_ASS(comm, "d"); - WRITE_ASS(freq, "d"); - WRITE_ASS(inherit_stat, "d"); - WRITE_ASS(enable_on_exec, "d"); - WRITE_ASS(task, "d"); - WRITE_ASS(watermark, "d"); - WRITE_ASS(precise_ip, "d"); - WRITE_ASS(mmap_data, "d"); - WRITE_ASS(sample_id_all, "d"); - WRITE_ASS(exclude_host, "d"); - WRITE_ASS(exclude_guest, "d"); - WRITE_ASS(exclude_callchain_kernel, "d"); - WRITE_ASS(exclude_callchain_user, "d"); - WRITE_ASS(mmap2, "d"); - WRITE_ASS(comm_exec, "d"); - WRITE_ASS(context_switch, "d"); - WRITE_ASS(write_backward, "d"); - WRITE_ASS(namespaces, "d"); - WRITE_ASS(use_clockid, "d"); - WRITE_ASS(wakeup_events, PRIu32); - WRITE_ASS(bp_type, PRIu32); - WRITE_ASS(config1, "llu"); - WRITE_ASS(config2, "llu"); - WRITE_ASS(branch_sample_type, "llu"); - WRITE_ASS(sample_regs_user, "llu"); - WRITE_ASS(sample_stack_user, PRIu32); - - fclose(file); - return 0; -} - -void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu, - int fd, int group_fd, unsigned long flags) -{ - int errno_saved = errno; - - if ((fd != -1) && store_event(attr, pid, cpu, fd, group_fd, flags)) { - pr_err("test attr FAILED"); - exit(128); - } - - errno = errno_saved; -} - -void test_attr__ready(void) -{ - if (unlikely(test_attr__enabled) && !ready) - ready = true; -} - -static int run_dir(const char *d, const char *perf) -{ - char v[] = "-vvvvv"; - int vcnt = min(verbose, (int) sizeof(v) - 1); - char cmd[3*PATH_MAX]; - - if (verbose > 0) - vcnt++; - - scnprintf(cmd, 3*PATH_MAX, PYTHON " %s/attr.py -d %s/attr/ -p %s %.*s", - d, d, perf, vcnt, v); - - return system(cmd) ? TEST_FAIL : TEST_OK; -} - -static int test__attr(struct test_suite *test __maybe_unused, int subtest __maybe_unused) -{ - struct stat st; - char path_perf[PATH_MAX]; - char path_dir[PATH_MAX]; - char *exec_path; - - if (perf_pmus__num_core_pmus() > 1) { - /* - * TODO: Attribute tests hard code the PMU type. If there are >1 - * core PMU then each PMU will have a different type which - * requires additional support. - */ - pr_debug("Skip test on hybrid systems"); - return TEST_SKIP; - } - - /* First try development tree tests. */ - if (!lstat("./tests", &st)) - return run_dir("./tests", "./perf"); - - exec_path = get_argv_exec_path(); - if (exec_path == NULL) - return -1; - - /* Then installed path. */ - snprintf(path_dir, PATH_MAX, "%s/tests", exec_path); - snprintf(path_perf, PATH_MAX, "%s/perf", BINDIR); - free(exec_path); - - if (!lstat(path_dir, &st) && - !lstat(path_perf, &st)) - return run_dir(path_dir, path_perf); - - return TEST_SKIP; -} - -DEFINE_SUITE("Setup struct perf_event_attr", attr); diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 3b30f258c395..50533446e747 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -80,7 +80,6 @@ static struct test_suite *generic_tests[] = { &suite__perf_evsel__tp_sched_test, &suite__syscall_openat_tp_fields, #endif - &suite__attr, &suite__hists_link, &suite__python_use, &suite__bp_signal, diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index e9e1f576d34d..14663ad14c53 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -5,6 +5,11 @@ * Parts came from builtin-{top,stat,record}.c, see those files for further * copyright notes. */ +/* + * Powerpc needs __SANE_USERSPACE_TYPES__ before to select + * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu. + */ +#define __SANE_USERSPACE_TYPES__ #include #include @@ -76,7 +81,123 @@ static int evsel__no_extra_init(struct evsel *evsel __maybe_unused) return 0; } -void __weak test_attr__ready(void) { } +static bool test_attr__enabled(void) +{ + static bool test_attr__enabled; + static bool test_attr__enabled_tested; + + if (!test_attr__enabled_tested) { + char *dir = getenv("PERF_TEST_ATTR"); + + test_attr__enabled = (dir != NULL); + test_attr__enabled_tested = true; + } + return test_attr__enabled; +} + +#define __WRITE_ASS(str, fmt, data) \ +do { \ + if (fprintf(file, #str "=%"fmt "\n", data) < 0) { \ + perror("test attr - failed to write event file"); \ + fclose(file); \ + return -1; \ + } \ +} while (0) + +#define WRITE_ASS(field, fmt) __WRITE_ASS(field, fmt, attr->field) + +static int store_event(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu, + int fd, int group_fd, unsigned long flags) +{ + FILE *file; + char path[PATH_MAX]; + char *dir = getenv("PERF_TEST_ATTR"); + + snprintf(path, PATH_MAX, "%s/event-%d-%llu-%d", dir, + attr->type, attr->config, fd); + + file = fopen(path, "w+"); + if (!file) { + perror("test attr - failed to open event file"); + return -1; + } + + if (fprintf(file, "[event-%d-%llu-%d]\n", + attr->type, attr->config, fd) < 0) { + perror("test attr - failed to write event file"); + fclose(file); + return -1; + } + + /* syscall arguments */ + __WRITE_ASS(fd, "d", fd); + __WRITE_ASS(group_fd, "d", group_fd); + __WRITE_ASS(cpu, "d", cpu.cpu); + __WRITE_ASS(pid, "d", pid); + __WRITE_ASS(flags, "lu", flags); + + /* struct perf_event_attr */ + WRITE_ASS(type, PRIu32); + WRITE_ASS(size, PRIu32); + WRITE_ASS(config, "llu"); + WRITE_ASS(sample_period, "llu"); + WRITE_ASS(sample_type, "llu"); + WRITE_ASS(read_format, "llu"); + WRITE_ASS(disabled, "d"); + WRITE_ASS(inherit, "d"); + WRITE_ASS(pinned, "d"); + WRITE_ASS(exclusive, "d"); + WRITE_ASS(exclude_user, "d"); + WRITE_ASS(exclude_kernel, "d"); + WRITE_ASS(exclude_hv, "d"); + WRITE_ASS(exclude_idle, "d"); + WRITE_ASS(mmap, "d"); + WRITE_ASS(comm, "d"); + WRITE_ASS(freq, "d"); + WRITE_ASS(inherit_stat, "d"); + WRITE_ASS(enable_on_exec, "d"); + WRITE_ASS(task, "d"); + WRITE_ASS(watermark, "d"); + WRITE_ASS(precise_ip, "d"); + WRITE_ASS(mmap_data, "d"); + WRITE_ASS(sample_id_all, "d"); + WRITE_ASS(exclude_host, "d"); + WRITE_ASS(exclude_guest, "d"); + WRITE_ASS(exclude_callchain_kernel, "d"); + WRITE_ASS(exclude_callchain_user, "d"); + WRITE_ASS(mmap2, "d"); + WRITE_ASS(comm_exec, "d"); + WRITE_ASS(context_switch, "d"); + WRITE_ASS(write_backward, "d"); + WRITE_ASS(namespaces, "d"); + WRITE_ASS(use_clockid, "d"); + WRITE_ASS(wakeup_events, PRIu32); + WRITE_ASS(bp_type, PRIu32); + WRITE_ASS(config1, "llu"); + WRITE_ASS(config2, "llu"); + WRITE_ASS(branch_sample_type, "llu"); + WRITE_ASS(sample_regs_user, "llu"); + WRITE_ASS(sample_stack_user, PRIu32); + + fclose(file); + return 0; +} + +#undef __WRITE_ASS +#undef WRITE_ASS + +static void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu, + int fd, int group_fd, unsigned long flags) +{ + int errno_saved = errno; + + if ((fd != -1) && store_event(attr, pid, cpu, fd, group_fd, flags)) { + pr_err("test attr FAILED"); + exit(128); + } + + errno = errno_saved; +} static void evsel__no_extra_fini(struct evsel *evsel __maybe_unused) { @@ -2145,8 +2266,6 @@ retry_open: goto out_close; } - test_attr__ready(); - /* Debug message used by test scripts */ pr_debug2_peo("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx", pid, perf_cpu_map__cpu(cpus, idx).cpu, group_fd, evsel->open_flags); @@ -2167,7 +2286,7 @@ retry_open: bpf_counter__install_pe(evsel, idx, fd); - if (unlikely(test_attr__enabled)) { + if (unlikely(test_attr__enabled())) { test_attr__open(&evsel->core.attr, pid, perf_cpu_map__cpu(cpus, idx), fd, group_fd, evsel->open_flags); diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 9966c21aaf04..14f2c70906be 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -81,13 +81,6 @@ char *perf_exe(char *buf, int len); #endif #endif -extern bool test_attr__enabled; -void test_attr__ready(void); -void test_attr__init(void); -struct perf_event_attr; -void test_attr__open(struct perf_event_attr *attr, pid_t pid, struct perf_cpu cpu, - int fd, int group_fd, unsigned long flags); - struct perf_debuginfod { const char *urls; bool set; -- cgit v1.2.3 From 8296aa0f28c2433f213fce18bad00a97965c052f Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 14 Oct 2024 17:01:58 -0700 Subject: perf test: Move attr files into shell directory where they are used Now the attr tests are shell tests move the associated python and configuration files. Update the installation build rules for the new directories. Recycle the lib install rules for python files allowing the explicit attr.py install line to be dropped. Signed-off-by: Ian Rogers Tested-by: Athira Rajeev Cc: Stephen Rothwell Cc: zhaimingbing Cc: Howard Chu Cc: Ze Gao Cc: Weilin Wang Cc: James Clark Cc: Leo Yan Cc: Thomas Richter Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241015000158.871828-4-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/Makefile.perf | 5 +- tools/perf/tests/attr.py | 476 --------------------- tools/perf/tests/attr/README | 71 --- tools/perf/tests/attr/base-record | 41 -- tools/perf/tests/attr/base-record-spe | 40 -- tools/perf/tests/attr/base-stat | 41 -- tools/perf/tests/attr/system-wide-dummy | 52 --- tools/perf/tests/attr/test-record-C0 | 24 -- tools/perf/tests/attr/test-record-basic | 6 - tools/perf/tests/attr/test-record-branch-any | 8 - .../perf/tests/attr/test-record-branch-filter-any | 8 - .../tests/attr/test-record-branch-filter-any_call | 8 - .../tests/attr/test-record-branch-filter-any_ret | 8 - tools/perf/tests/attr/test-record-branch-filter-hv | 8 - .../tests/attr/test-record-branch-filter-ind_call | 8 - tools/perf/tests/attr/test-record-branch-filter-k | 8 - tools/perf/tests/attr/test-record-branch-filter-u | 8 - tools/perf/tests/attr/test-record-count | 9 - tools/perf/tests/attr/test-record-data | 10 - tools/perf/tests/attr/test-record-dummy-C0 | 55 --- tools/perf/tests/attr/test-record-freq | 7 - tools/perf/tests/attr/test-record-graph-default | 9 - .../tests/attr/test-record-graph-default-aarch64 | 9 - tools/perf/tests/attr/test-record-graph-dwarf | 12 - tools/perf/tests/attr/test-record-graph-fp | 9 - tools/perf/tests/attr/test-record-graph-fp-aarch64 | 9 - tools/perf/tests/attr/test-record-group-sampling | 40 -- tools/perf/tests/attr/test-record-group-sampling1 | 50 --- tools/perf/tests/attr/test-record-group-sampling2 | 61 --- tools/perf/tests/attr/test-record-group1 | 23 - tools/perf/tests/attr/test-record-group2 | 30 -- tools/perf/tests/attr/test-record-group3 | 31 -- tools/perf/tests/attr/test-record-no-buffering | 9 - tools/perf/tests/attr/test-record-no-inherit | 8 - tools/perf/tests/attr/test-record-no-samples | 7 - tools/perf/tests/attr/test-record-period | 8 - tools/perf/tests/attr/test-record-pfm-period | 9 - tools/perf/tests/attr/test-record-raw | 7 - tools/perf/tests/attr/test-record-spe-period | 12 - tools/perf/tests/attr/test-record-spe-period-term | 12 - .../tests/attr/test-record-spe-physical-address | 12 - .../attr/test-record-user-regs-no-sve-aarch64 | 9 - .../attr/test-record-user-regs-old-sve-aarch64 | 10 - .../tests/attr/test-record-user-regs-sve-aarch64 | 14 - tools/perf/tests/attr/test-stat-C0 | 10 - tools/perf/tests/attr/test-stat-basic | 7 - tools/perf/tests/attr/test-stat-default | 229 ---------- tools/perf/tests/attr/test-stat-detailed-1 | 271 ------------ tools/perf/tests/attr/test-stat-detailed-2 | 331 -------------- tools/perf/tests/attr/test-stat-detailed-3 | 351 --------------- tools/perf/tests/attr/test-stat-group1 | 17 - tools/perf/tests/attr/test-stat-no-inherit | 8 - tools/perf/tests/shell/attr.sh | 2 +- tools/perf/tests/shell/attr/README | 71 +++ tools/perf/tests/shell/attr/base-record | 41 ++ tools/perf/tests/shell/attr/base-record-spe | 40 ++ tools/perf/tests/shell/attr/base-stat | 41 ++ tools/perf/tests/shell/attr/system-wide-dummy | 52 +++ tools/perf/tests/shell/attr/test-record-C0 | 24 ++ tools/perf/tests/shell/attr/test-record-basic | 6 + tools/perf/tests/shell/attr/test-record-branch-any | 8 + .../tests/shell/attr/test-record-branch-filter-any | 8 + .../shell/attr/test-record-branch-filter-any_call | 8 + .../shell/attr/test-record-branch-filter-any_ret | 8 + .../tests/shell/attr/test-record-branch-filter-hv | 8 + .../shell/attr/test-record-branch-filter-ind_call | 8 + .../tests/shell/attr/test-record-branch-filter-k | 8 + .../tests/shell/attr/test-record-branch-filter-u | 8 + tools/perf/tests/shell/attr/test-record-count | 9 + tools/perf/tests/shell/attr/test-record-data | 10 + tools/perf/tests/shell/attr/test-record-dummy-C0 | 55 +++ tools/perf/tests/shell/attr/test-record-freq | 7 + .../tests/shell/attr/test-record-graph-default | 9 + .../shell/attr/test-record-graph-default-aarch64 | 9 + .../perf/tests/shell/attr/test-record-graph-dwarf | 12 + tools/perf/tests/shell/attr/test-record-graph-fp | 9 + .../tests/shell/attr/test-record-graph-fp-aarch64 | 9 + .../tests/shell/attr/test-record-group-sampling | 40 ++ .../tests/shell/attr/test-record-group-sampling1 | 50 +++ .../tests/shell/attr/test-record-group-sampling2 | 61 +++ tools/perf/tests/shell/attr/test-record-group1 | 23 + tools/perf/tests/shell/attr/test-record-group2 | 30 ++ tools/perf/tests/shell/attr/test-record-group3 | 31 ++ .../perf/tests/shell/attr/test-record-no-buffering | 9 + tools/perf/tests/shell/attr/test-record-no-inherit | 8 + tools/perf/tests/shell/attr/test-record-no-samples | 7 + tools/perf/tests/shell/attr/test-record-period | 8 + tools/perf/tests/shell/attr/test-record-pfm-period | 9 + tools/perf/tests/shell/attr/test-record-raw | 7 + tools/perf/tests/shell/attr/test-record-spe-period | 12 + .../tests/shell/attr/test-record-spe-period-term | 12 + .../shell/attr/test-record-spe-physical-address | 12 + .../attr/test-record-user-regs-no-sve-aarch64 | 9 + .../attr/test-record-user-regs-old-sve-aarch64 | 10 + .../shell/attr/test-record-user-regs-sve-aarch64 | 14 + tools/perf/tests/shell/attr/test-stat-C0 | 10 + tools/perf/tests/shell/attr/test-stat-basic | 7 + tools/perf/tests/shell/attr/test-stat-default | 229 ++++++++++ tools/perf/tests/shell/attr/test-stat-detailed-1 | 271 ++++++++++++ tools/perf/tests/shell/attr/test-stat-detailed-2 | 331 ++++++++++++++ tools/perf/tests/shell/attr/test-stat-detailed-3 | 351 +++++++++++++++ tools/perf/tests/shell/attr/test-stat-group1 | 17 + tools/perf/tests/shell/attr/test-stat-no-inherit | 8 + tools/perf/tests/shell/lib/attr.py | 476 +++++++++++++++++++++ 104 files changed, 2523 insertions(+), 2524 deletions(-) delete mode 100644 tools/perf/tests/attr.py delete mode 100644 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-1128,12 +1128,11 @@ endif install-tests: all install-gtk $(call QUIET_INSTALL, tests) \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests'; \ - $(INSTALL) tests/attr.py -m 644 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests'; \ $(INSTALL) tests/pe-file.exe* '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests'; \ - $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/attr'; \ - $(INSTALL) tests/attr/* -m 644 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/attr'; \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell'; \ $(INSTALL) tests/shell/*.sh '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell'; \ + $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/attr'; \ + $(INSTALL) tests/shell/attr/* -m 644 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/attr'; \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib'; \ $(INSTALL) tests/shell/lib/*.sh -m 644 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib'; \ $(INSTALL) tests/shell/lib/*.py -m 644 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib'; \ diff --git a/tools/perf/tests/attr.py b/tools/perf/tests/attr.py deleted file mode 100644 index 3db9a7d78715..000000000000 --- a/tools/perf/tests/attr.py +++ /dev/null @@ -1,476 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 - -from __future__ import print_function - -import os -import sys -import glob -import optparse -import platform -import tempfile -import logging -import re -import shutil -import subprocess - -try: - import configparser -except ImportError: - import ConfigParser as configparser - -def data_equal(a, b): - # Allow multiple values in assignment separated by '|' - a_list = a.split('|') - b_list = b.split('|') - - for a_item in a_list: - for b_item in b_list: - if (a_item == b_item): - return True - elif (a_item == '*') or (b_item == '*'): - return True - - return False - -class Fail(Exception): - def __init__(self, test, msg): - self.msg = msg - self.test = test - def getMsg(self): - return '\'%s\' - %s' % (self.test.path, self.msg) - -class Notest(Exception): - def __init__(self, test, arch): - self.arch = arch - self.test = test - def getMsg(self): - return '[%s] \'%s\'' % (self.arch, self.test.path) - -class Unsup(Exception): - def __init__(self, test): - self.test = test - def getMsg(self): - return '\'%s\'' % self.test.path - -class Event(dict): - terms = [ - 'cpu', - 'flags', - 'type', - 'size', - 'config', - 'sample_period', - 'sample_type', - 'read_format', - 'disabled', - 'inherit', - 'pinned', - 'exclusive', - 'exclude_user', - 'exclude_kernel', - 'exclude_hv', - 'exclude_idle', - 'mmap', - 'comm', - 'freq', - 'inherit_stat', - 'enable_on_exec', - 'task', - 'watermark', - 'precise_ip', - 'mmap_data', - 'sample_id_all', - 'exclude_host', - 'exclude_guest', - 'exclude_callchain_kernel', - 'exclude_callchain_user', - 'wakeup_events', - 'bp_type', - 'config1', - 'config2', - 'branch_sample_type', - 'sample_regs_user', - 'sample_stack_user', - ] - - def add(self, data): - for key, val in data: - log.debug(" %s = %s" % (key, val)) - self[key] = val - - def __init__(self, name, data, base): - log.debug(" Event %s" % name); - self.name = name; - self.group = '' - self.add(base) - self.add(data) - - def equal(self, other): - for t in Event.terms: - log.debug(" [%s] %s %s" % (t, self[t], other[t])); - if t not in self or t not in other: - return False - if not data_equal(self[t], other[t]): - return False - return True - - def optional(self): - if 'optional' in self and self['optional'] == '1': - return True - return False - - def diff(self, other): - for t in Event.terms: - if t not in self or t not in other: - continue - if not data_equal(self[t], other[t]): - log.warning("expected %s=%s, got %s" % (t, self[t], other[t])) - -def parse_version(version): - if not version: - return None - return [int(v) for v in version.split(".")[0:2]] - -# Test file description needs to have following sections: -# [config] -# - just single instance in file -# - needs to specify: -# 'command' - perf command name -# 'args' - special command arguments -# 'ret' - Skip test if Perf doesn't exit with this value (0 by default) -# 'test_ret'- If set to 'true', fail test instead of skipping for 'ret' argument -# 'arch' - architecture specific test (optional) -# comma separated list, ! at the beginning -# negates it. -# 'auxv' - Truthy statement that is evaled in the scope of the auxv map. When false, -# the test is skipped. For example 'auxv["AT_HWCAP"] == 10'. (optional) -# 'kernel_since' - Inclusive kernel version from which the test will start running. Only the -# first two values are supported, for example "6.1" (optional) -# 'kernel_until' - Exclusive kernel version from which the test will stop running. (optional) -# [eventX:base] -# - one or multiple instances in file -# - expected values assignments -class Test(object): - def __init__(self, path, options): - parser = configparser.ConfigParser() - parser.read(path) - - log.warning("running '%s'" % path) - - self.path = path - self.test_dir = options.test_dir - self.perf = options.perf - self.command = parser.get('config', 'command') - self.args = parser.get('config', 'args') - - try: - self.ret = parser.get('config', 'ret') - except: - self.ret = 0 - - self.test_ret = parser.getboolean('config', 'test_ret', fallback=False) - - try: - self.arch = parser.get('config', 'arch') - log.warning("test limitation '%s'" % self.arch) - except: - self.arch = '' - - self.auxv = parser.get('config', 'auxv', fallback=None) - self.kernel_since = parse_version(parser.get('config', 'kernel_since', fallback=None)) - self.kernel_until = parse_version(parser.get('config', 'kernel_until', fallback=None)) - self.expect = {} - self.result = {} - log.debug(" loading expected events"); - self.load_events(path, self.expect) - - def is_event(self, name): - if name.find("event") == -1: - return False - else: - return True - - def skip_test_kernel_since(self): - if not self.kernel_since: - return False - return not self.kernel_since <= parse_version(platform.release()) - - def skip_test_kernel_until(self): - if not self.kernel_until: - return False - return not parse_version(platform.release()) < self.kernel_until - - def skip_test_auxv(self): - def new_auxv(a, pattern): - items = list(filter(None, pattern.split(a))) - # AT_HWCAP is hex but doesn't have a prefix, so special case it - if items[0] == "AT_HWCAP": - value = int(items[-1], 16) - else: - try: - value = int(items[-1], 0) - except: - value = items[-1] - return (items[0], value) - - if not self.auxv: - return False - auxv = subprocess.check_output("LD_SHOW_AUXV=1 sleep 0", shell=True) \ - .decode(sys.stdout.encoding) - pattern = re.compile(r"[: ]+") - auxv = dict([new_auxv(a, pattern) for a in auxv.splitlines()]) - return not eval(self.auxv) - - def skip_test_arch(self, myarch): - # If architecture not set always run test - if self.arch == '': - # log.warning("test for arch %s is ok" % myarch) - return False - - # Allow multiple values in assignment separated by ',' - arch_list = self.arch.split(',') - - # Handle negated list such as !s390x,ppc - if arch_list[0][0] == '!': - arch_list[0] = arch_list[0][1:] - log.warning("excluded architecture list %s" % arch_list) - for arch_item in arch_list: - # log.warning("test for %s arch is %s" % (arch_item, myarch)) - if arch_item == myarch: - return True - return False - - for arch_item in arch_list: - # log.warning("test for architecture '%s' current '%s'" % (arch_item, myarch)) - if arch_item == myarch: - return False - return True - - def restore_sample_rate(self, value=10000): - try: - # Check value of sample_rate - with open("/proc/sys/kernel/perf_event_max_sample_rate", "r") as fIn: - curr_value = fIn.readline() - # If too low restore to reasonable value - if not curr_value or int(curr_value) < int(value): - with open("/proc/sys/kernel/perf_event_max_sample_rate", "w") as fOut: - fOut.write(str(value)) - - except IOError as e: - log.warning("couldn't restore sample_rate value: I/O error %s" % e) - except ValueError as e: - log.warning("couldn't restore sample_rate value: Value error %s" % e) - except TypeError as e: - log.warning("couldn't restore sample_rate value: Type error %s" % e) - - def load_events(self, path, events): - parser_event = configparser.ConfigParser() - parser_event.read(path) - - # The event record section header contains 'event' word, - # optionaly followed by ':' allowing to load 'parent - # event' first as a base - for section in filter(self.is_event, parser_event.sections()): - - parser_items = parser_event.items(section); - base_items = {} - - # Read parent event if there's any - if (':' in section): - base = section[section.index(':') + 1:] - parser_base = configparser.ConfigParser() - parser_base.read(self.test_dir + '/' + base) - base_items = parser_base.items('event') - - e = Event(section, parser_items, base_items) - events[section] = e - - def run_cmd(self, tempdir): - junk1, junk2, junk3, junk4, myarch = (os.uname()) - - if self.skip_test_arch(myarch): - raise Notest(self, myarch) - - if self.skip_test_auxv(): - raise Notest(self, "auxv skip") - - if self.skip_test_kernel_since(): - raise Notest(self, "old kernel skip") - - if self.skip_test_kernel_until(): - raise Notest(self, "new kernel skip") - - self.restore_sample_rate() - cmd = "PERF_TEST_ATTR=%s %s %s -o %s/perf.data %s" % (tempdir, - self.perf, self.command, tempdir, self.args) - ret = os.WEXITSTATUS(os.system(cmd)) - - log.info(" '%s' ret '%s', expected '%s'" % (cmd, str(ret), str(self.ret))) - - if not data_equal(str(ret), str(self.ret)): - if self.test_ret: - raise Fail(self, "Perf exit code failure") - else: - raise Unsup(self) - - def compare(self, expect, result): - match = {} - - log.debug(" compare"); - - # For each expected event find all matching - # events in result. Fail if there's not any. - for exp_name, exp_event in expect.items(): - exp_list = [] - res_event = {} - log.debug(" matching [%s]" % exp_name) - for res_name, res_event in result.items(): - log.debug(" to [%s]" % res_name) - if (exp_event.equal(res_event)): - exp_list.append(res_name) - log.debug(" ->OK") - else: - log.debug(" ->FAIL"); - - log.debug(" match: [%s] matches %s" % (exp_name, str(exp_list))) - - # we did not any matching event - fail - if not exp_list: - if exp_event.optional(): - log.debug(" %s does not match, but is optional" % exp_name) - else: - if not res_event: - log.debug(" res_event is empty"); - else: - exp_event.diff(res_event) - raise Fail(self, 'match failure'); - - match[exp_name] = exp_list - - # For each defined group in the expected events - # check we match the same group in the result. - for exp_name, exp_event in expect.items(): - group = exp_event.group - - if (group == ''): - continue - - for res_name in match[exp_name]: - res_group = result[res_name].group - if res_group not in match[group]: - raise Fail(self, 'group failure') - - log.debug(" group: [%s] matches group leader %s" % - (exp_name, str(match[group]))) - - log.debug(" matched") - - def resolve_groups(self, events): - for name, event in events.items(): - group_fd = event['group_fd']; - if group_fd == '-1': - continue; - - for iname, ievent in events.items(): - if (ievent['fd'] == group_fd): - event.group = iname - log.debug('[%s] has group leader [%s]' % (name, iname)) - break; - - def run(self): - tempdir = tempfile.mkdtemp(); - - try: - # run the test script - self.run_cmd(tempdir); - - # load events expectation for the test - log.debug(" loading result events"); - for f in glob.glob(tempdir + '/event*'): - self.load_events(f, self.result); - - # resolve group_fd to event names - self.resolve_groups(self.expect); - self.resolve_groups(self.result); - - # do the expectation - results matching - both ways - self.compare(self.expect, self.result) - self.compare(self.result, self.expect) - - finally: - # cleanup - shutil.rmtree(tempdir) - - -def run_tests(options): - for f in glob.glob(options.test_dir + '/' + options.test): - try: - Test(f, options).run() - except Unsup as obj: - log.warning("unsupp %s" % obj.getMsg()) - except Notest as obj: - log.warning("skipped %s" % obj.getMsg()) - -def setup_log(verbose): - global log - level = logging.CRITICAL - - if verbose == 1: - level = logging.WARNING - if verbose == 2: - level = logging.INFO - if verbose >= 3: - level = logging.DEBUG - - log = logging.getLogger('test') - log.setLevel(level) - ch = logging.StreamHandler() - ch.setLevel(level) - formatter = logging.Formatter('%(message)s') - ch.setFormatter(formatter) - log.addHandler(ch) - -USAGE = '''%s [OPTIONS] - -d dir # tests dir - -p path # perf binary - -t test # single test - -v # verbose level -''' % sys.argv[0] - -def main(): - parser = optparse.OptionParser(usage=USAGE) - - parser.add_option("-t", "--test", - action="store", type="string", dest="test") - parser.add_option("-d", "--test-dir", - action="store", type="string", dest="test_dir") - parser.add_option("-p", "--perf", - action="store", type="string", dest="perf") - parser.add_option("-v", "--verbose", - default=0, action="count", dest="verbose") - - options, args = parser.parse_args() - if args: - parser.error('FAILED wrong arguments %s' % ' '.join(args)) - return -1 - - setup_log(options.verbose) - - if not options.test_dir: - print('FAILED no -d option specified') - sys.exit(-1) - - if not options.test: - options.test = 'test*' - - try: - run_tests(options) - - except Fail as obj: - print("FAILED %s" % obj.getMsg()) - sys.exit(-1) - - sys.exit(0) - -if __name__ == '__main__': - main() diff --git a/tools/perf/tests/attr/README b/tools/perf/tests/attr/README deleted file mode 100644 index 67c4ca76b85d..000000000000 --- a/tools/perf/tests/attr/README +++ /dev/null @@ -1,71 +0,0 @@ -The struct perf_event_attr test (attr tests) support -==================================================== -This testing support is embedded into perf directly and is governed -by the PERF_TEST_ATTR environment variable and hook inside the -sys_perf_event_open function. - -The general idea is to store 'struct perf_event_attr' details for -each event created within single perf command. Each event details -are stored into separate text file. Once perf command is finished -these files are checked for values we expect for command. - -The attr tests consist of following parts: - -tests/attr.c ------------- -This is the sys_perf_event_open hook implementation. The hook -is triggered when the PERF_TEST_ATTR environment variable is -defined. It must contain name of existing directory with access -and write permissions. - -For each sys_perf_event_open call event details are stored in -separate file. Besides 'struct perf_event_attr' values we also -store 'fd' and 'group_fd' values to allow checking for groups. - -tests/attr.py -------------- -This is the python script that does all the hard work. It reads -the test definition, executes it and checks results. - -tests/attr/ ------------ -Directory containing all attr test definitions. -Following tests are defined (with perf commands): - - perf record kill (test-record-basic) - perf record -b kill (test-record-branch-any) - perf record -j any kill (test-record-branch-filter-any) - perf record -j any_call kill (test-record-branch-filter-any_call) - perf record -j any_ret kill (test-record-branch-filter-any_ret) - perf record -j hv kill (test-record-branch-filter-hv) - perf record -j ind_call kill (test-record-branch-filter-ind_call) - perf record -j k kill (test-record-branch-filter-k) - perf record -j u kill (test-record-branch-filter-u) - perf record -c 123 kill (test-record-count) - perf record -d kill (test-record-data) - perf record -F 100 kill (test-record-freq) - perf record -g kill (test-record-graph-default) - perf record -g kill (test-record-graph-default-aarch64) - perf record --call-graph dwarf kill (test-record-graph-dwarf) - perf record --call-graph fp kill (test-record-graph-fp) - perf record --call-graph fp kill (test-record-graph-fp-aarch64) - perf record -e '{cycles,instructions}' kill (test-record-group1) - perf record -e '{cycles/period=1/,instructions/period=2/}:S' kill (test-record-group2) - perf record -e '{cycles,cache-misses}:S' kill (test-record-group-sampling1) - perf record -c 10000 -e '{cycles,cache-misses}:S' kill (test-record-group-sampling2) - perf record -D kill (test-record-no-delay) - perf record -i kill (test-record-no-inherit) - perf record -n kill (test-record-no-samples) - perf record -c 100 -P kill (test-record-period) - perf record -c 1 --pfm-events=cycles:period=2 (test-record-pfm-period) - perf record -R kill (test-record-raw) - perf record -c 2 -e arm_spe_0// -- kill (test-record-spe-period) - perf record -e arm_spe_0/period=3/ -- kill (test-record-spe-period-term) - perf record -e arm_spe_0/pa_enable=1/ -- kill (test-record-spe-physical-address) - perf stat -e cycles kill (test-stat-basic) - perf stat kill (test-stat-default) - perf stat -d kill (test-stat-detailed-1) - perf stat -dd kill (test-stat-detailed-2) - perf stat -ddd kill (test-stat-detailed-3) - perf stat -e '{cycles,instructions}' kill (test-stat-group1) - perf stat -i -e cycles kill (test-stat-no-inherit) diff --git a/tools/perf/tests/attr/base-record b/tools/perf/tests/attr/base-record deleted file mode 100644 index b44e4e6e4443..000000000000 --- a/tools/perf/tests/attr/base-record +++ /dev/null @@ -1,41 +0,0 @@ -[event] -fd=1 -group_fd=-1 -# 0 or PERF_FLAG_FD_CLOEXEC flag -flags=0|8 -cpu=* -type=0|1 -size=136 -config=0|1 -sample_period=* -sample_type=263 -read_format=0|4|20 -disabled=1 -inherit=1 -pinned=0 -exclusive=0 -exclude_user=0 -exclude_kernel=0|1 -exclude_hv=0|1 -exclude_idle=0 -mmap=1 -comm=1 -freq=1 -inherit_stat=0 -enable_on_exec=1 -task=1 -watermark=0 -precise_ip=0|1|2|3 -mmap_data=0 -sample_id_all=1 -exclude_host=0|1 -exclude_guest=0|1 -exclude_callchain_kernel=0 -exclude_callchain_user=0 -wakeup_events=0 -bp_type=0 -config1=0 -config2=0 -branch_sample_type=0 -sample_regs_user=0 -sample_stack_user=0 diff --git a/tools/perf/tests/attr/base-record-spe b/tools/perf/tests/attr/base-record-spe deleted file mode 100644 index 08fa96b59240..000000000000 --- a/tools/perf/tests/attr/base-record-spe +++ /dev/null @@ -1,40 +0,0 @@ -[event] -fd=* -group_fd=-1 -flags=* -cpu=* -type=* -size=* -config=* -sample_period=* -sample_type=* -read_format=* -disabled=* -inherit=* -pinned=* -exclusive=* -exclude_user=* -exclude_kernel=* -exclude_hv=* -exclude_idle=* -mmap=* -comm=* -freq=* -inherit_stat=* -enable_on_exec=* -task=* -watermark=* -precise_ip=* -mmap_data=* -sample_id_all=* -exclude_host=* -exclude_guest=* -exclude_callchain_kernel=* -exclude_callchain_user=* -wakeup_events=* -bp_type=* -config1=* -config2=* -branch_sample_type=* -sample_regs_user=* -sample_stack_user=* diff --git a/tools/perf/tests/attr/base-stat b/tools/perf/tests/attr/base-stat deleted file mode 100644 index fccd8ec4d1b0..000000000000 --- a/tools/perf/tests/attr/base-stat +++ /dev/null @@ -1,41 +0,0 @@ -[event] -fd=1 -group_fd=-1 -# 0 or PERF_FLAG_FD_CLOEXEC flag -flags=0|8 -cpu=* -type=0 -size=136 -config=0 -sample_period=0 -sample_type=65536 -read_format=3 -disabled=1 -inherit=1 -pinned=0 -exclusive=0 -exclude_user=0 -exclude_kernel=0|1 -exclude_hv=0|1 -exclude_idle=0 -mmap=0 -comm=0 -freq=0 -inherit_stat=0 -enable_on_exec=1 -task=0 -watermark=0 -precise_ip=0 -mmap_data=0 -sample_id_all=0 -exclude_host=0|1 -exclude_guest=0|1 -exclude_callchain_kernel=0 -exclude_callchain_user=0 -wakeup_events=0 -bp_type=0 -config1=0 -config2=0 -branch_sample_type=0 -sample_regs_user=0 -sample_stack_user=0 diff --git a/tools/perf/tests/attr/system-wide-dummy b/tools/perf/tests/attr/system-wide-dummy deleted file mode 100644 index a1e1d6a263bf..000000000000 --- a/tools/perf/tests/attr/system-wide-dummy +++ /dev/null @@ -1,52 +0,0 @@ -# Event added by system-wide or CPU perf-record to handle the race of -# processes starting while /proc is processed. -[event] -fd=1 -group_fd=-1 -cpu=* -pid=-1 -flags=8 -type=1 -size=136 -config=9 -sample_period=1 -# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | -# PERF_SAMPLE_CPU | PERF_SAMPLE_IDENTIFIER -sample_type=65671 -read_format=4|20 -# Event will be enabled right away. -disabled=0 -inherit=1 -pinned=0 -exclusive=0 -exclude_user=0 -exclude_kernel=1 -exclude_hv=1 -exclude_idle=0 -mmap=1 -comm=1 -freq=0 -inherit_stat=0 -enable_on_exec=0 -task=1 -watermark=0 -precise_ip=0 -mmap_data=0 -sample_id_all=1 -exclude_host=0 -exclude_guest=1 -exclude_callchain_kernel=0 -exclude_callchain_user=0 -mmap2=1 -comm_exec=1 -context_switch=0 -write_backward=0 -namespaces=0 -use_clockid=0 -wakeup_events=0 -bp_type=0 -config1=0 -config2=0 -branch_sample_type=0 -sample_regs_user=0 -sample_stack_user=0 diff --git a/tools/perf/tests/attr/test-record-C0 b/tools/perf/tests/attr/test-record-C0 deleted file mode 100644 index 1049ac8b52f2..000000000000 --- a/tools/perf/tests/attr/test-record-C0 +++ /dev/null @@ -1,24 +0,0 @@ -[config] -command = record -args = --no-bpf-event -C 0 kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -cpu=0 - -# no enable on exec for CPU attached -enable_on_exec=0 - -# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | -# PERF_SAMPLE_PERIOD | PERF_SAMPLE_IDENTIFIER -# + PERF_SAMPLE_CPU added by -C 0 -sample_type=65927 - -# Dummy event handles mmaps, comm and task. -mmap=0 -comm=0 -task=0 -inherit=0 - -[event:system-wide-dummy] -inherit=0 diff --git a/tools/perf/tests/attr/test-record-basic b/tools/perf/tests/attr/test-record-basic deleted file mode 100644 index b0ca42a5ecc9..000000000000 --- a/tools/perf/tests/attr/test-record-basic +++ /dev/null @@ -1,6 +0,0 @@ -[config] -command = record -args = --no-bpf-event kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] diff --git a/tools/perf/tests/attr/test-record-branch-any b/tools/perf/tests/attr/test-record-branch-any deleted file mode 100644 index 1a99b3ce6b89..000000000000 --- a/tools/perf/tests/attr/test-record-branch-any +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -b kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=2311 -branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-branch-filter-any b/tools/perf/tests/attr/test-record-branch-filter-any deleted file mode 100644 index 709768b508c6..000000000000 --- a/tools/perf/tests/attr/test-record-branch-filter-any +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -j any kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=2311 -branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-branch-filter-any_call b/tools/perf/tests/attr/test-record-branch-filter-any_call deleted file mode 100644 index f943221f7825..000000000000 --- a/tools/perf/tests/attr/test-record-branch-filter-any_call +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -j any_call kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=2311 -branch_sample_type=16 diff --git a/tools/perf/tests/attr/test-record-branch-filter-any_ret b/tools/perf/tests/attr/test-record-branch-filter-any_ret deleted file mode 100644 index fd4f5b4154a9..000000000000 --- a/tools/perf/tests/attr/test-record-branch-filter-any_ret +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -j any_ret kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=2311 -branch_sample_type=32 diff --git a/tools/perf/tests/attr/test-record-branch-filter-hv b/tools/perf/tests/attr/test-record-branch-filter-hv deleted file mode 100644 index 4e52d685ebe1..000000000000 --- a/tools/perf/tests/attr/test-record-branch-filter-hv +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -j hv kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=2311 -branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-branch-filter-ind_call b/tools/perf/tests/attr/test-record-branch-filter-ind_call deleted file mode 100644 index e08c6ab3796e..000000000000 --- a/tools/perf/tests/attr/test-record-branch-filter-ind_call +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -j ind_call kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=2311 -branch_sample_type=64 diff --git a/tools/perf/tests/attr/test-record-branch-filter-k b/tools/perf/tests/attr/test-record-branch-filter-k deleted file mode 100644 index b4b98f84fc2f..000000000000 --- a/tools/perf/tests/attr/test-record-branch-filter-k +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -j k kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=2311 -branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-branch-filter-u b/tools/perf/tests/attr/test-record-branch-filter-u deleted file mode 100644 index fb9610edbb0d..000000000000 --- a/tools/perf/tests/attr/test-record-branch-filter-u +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -j u kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=2311 -branch_sample_type=8 diff --git a/tools/perf/tests/attr/test-record-count b/tools/perf/tests/attr/test-record-count deleted file mode 100644 index 5e9b9019d786..000000000000 --- a/tools/perf/tests/attr/test-record-count +++ /dev/null @@ -1,9 +0,0 @@ -[config] -command = record -args = --no-bpf-event -c 123 kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_period=123 -sample_type=7 -freq=0 diff --git a/tools/perf/tests/attr/test-record-data b/tools/perf/tests/attr/test-record-data deleted file mode 100644 index a99bb13149c2..000000000000 --- a/tools/perf/tests/attr/test-record-data +++ /dev/null @@ -1,10 +0,0 @@ -[config] -command = record -args = --no-bpf-event -d kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -# sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | -# PERF_SAMPLE_ADDR | PERF_SAMPLE_PERIOD | PERF_SAMPLE_DATA_SRC -sample_type=33039 -mmap_data=1 diff --git a/tools/perf/tests/attr/test-record-dummy-C0 b/tools/perf/tests/attr/test-record-dummy-C0 deleted file mode 100644 index 3050298bd614..000000000000 --- a/tools/perf/tests/attr/test-record-dummy-C0 +++ /dev/null @@ -1,55 +0,0 @@ -[config] -command = record -args = --no-bpf-event -e dummy -C 0 kill >/dev/null 2>&1 -ret = 1 - -[event] -fd=1 -group_fd=-1 -cpu=0 -pid=-1 -flags=8 -type=1 -size=136 -config=9 -sample_period=4000 -# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | -# PERF_SAMPLE_PERIOD -# + PERF_SAMPLE_CPU added by -C 0 -sample_type=391 -read_format=4|20 -disabled=0 -inherit=0 -pinned=0 -exclusive=0 -exclude_user=0 -exclude_kernel=0 -exclude_hv=0 -exclude_idle=0 -mmap=1 -comm=1 -freq=1 -inherit_stat=0 -enable_on_exec=0 -task=1 -watermark=0 -precise_ip=0 -mmap_data=0 -sample_id_all=1 -exclude_host=0 -exclude_guest=1 -exclude_callchain_kernel=0 -exclude_callchain_user=0 -mmap2=1 -comm_exec=1 -context_switch=0 -write_backward=0 -namespaces=0 -use_clockid=0 -wakeup_events=0 -bp_type=0 -config1=0 -config2=0 -branch_sample_type=0 -sample_regs_user=0 -sample_stack_user=0 diff --git a/tools/perf/tests/attr/test-record-freq b/tools/perf/tests/attr/test-record-freq deleted file mode 100644 index 89e29f6b2ae0..000000000000 --- a/tools/perf/tests/attr/test-record-freq +++ /dev/null @@ -1,7 +0,0 @@ -[config] -command = record -args = --no-bpf-event -F 100 kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_period=100 diff --git a/tools/perf/tests/attr/test-record-graph-default b/tools/perf/tests/attr/test-record-graph-default deleted file mode 100644 index f0a18b4ea4f5..000000000000 --- a/tools/perf/tests/attr/test-record-graph-default +++ /dev/null @@ -1,9 +0,0 @@ -[config] -command = record -args = --no-bpf-event -g kill >/dev/null 2>&1 -ret = 1 -# arm64 enables registers in the default mode (fp) -arch = !aarch64 - -[event:base-record] -sample_type=295 diff --git a/tools/perf/tests/attr/test-record-graph-default-aarch64 b/tools/perf/tests/attr/test-record-graph-default-aarch64 deleted file mode 100644 index e98d62efb6f7..000000000000 --- a/tools/perf/tests/attr/test-record-graph-default-aarch64 +++ /dev/null @@ -1,9 +0,0 @@ -[config] -command = record -args = --no-bpf-event -g kill >/dev/null 2>&1 -ret = 1 -arch = aarch64 - -[event:base-record] -sample_type=4391 -sample_regs_user=1073741824 diff --git a/tools/perf/tests/attr/test-record-graph-dwarf b/tools/perf/tests/attr/test-record-graph-dwarf deleted file mode 100644 index ae92061d611d..000000000000 --- a/tools/perf/tests/attr/test-record-graph-dwarf +++ /dev/null @@ -1,12 +0,0 @@ -[config] -command = record -args = --no-bpf-event --call-graph dwarf -- kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=45359 -exclude_callchain_user=1 -sample_stack_user=8192 -# TODO different for each arch, no support for that now -sample_regs_user=* -mmap_data=1 diff --git a/tools/perf/tests/attr/test-record-graph-fp b/tools/perf/tests/attr/test-record-graph-fp deleted file mode 100644 index a6e60e839205..000000000000 --- a/tools/perf/tests/attr/test-record-graph-fp +++ /dev/null @@ -1,9 +0,0 @@ -[config] -command = record -args = --no-bpf-event --call-graph fp kill >/dev/null 2>&1 -ret = 1 -# arm64 enables registers in fp mode -arch = !aarch64 - -[event:base-record] -sample_type=295 diff --git a/tools/perf/tests/attr/test-record-graph-fp-aarch64 b/tools/perf/tests/attr/test-record-graph-fp-aarch64 deleted file mode 100644 index cbeea9971285..000000000000 --- a/tools/perf/tests/attr/test-record-graph-fp-aarch64 +++ /dev/null @@ -1,9 +0,0 @@ -[config] -command = record -args = --no-bpf-event --call-graph fp kill >/dev/null 2>&1 -ret = 1 -arch = aarch64 - -[event:base-record] -sample_type=4391 -sample_regs_user=1073741824 diff --git a/tools/perf/tests/attr/test-record-group-sampling b/tools/perf/tests/attr/test-record-group-sampling deleted file mode 100644 index 86a940d7895d..000000000000 --- a/tools/perf/tests/attr/test-record-group-sampling +++ /dev/null @@ -1,40 +0,0 @@ -[config] -command = record -args = --no-bpf-event -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 -ret = 1 -kernel_until = 6.12 - -[event-1:base-record] -fd=1 -group_fd=-1 -sample_type=343 -read_format=12|28 -inherit=0 - -[event-2:base-record] -fd=2 -group_fd=1 - -# cache-misses -type=0 -config=3 - -# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD -sample_type=343 - -# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST -read_format=12|28 -task=0 -mmap=0 -comm=0 -enable_on_exec=0 -disabled=0 - -# inherit is disabled for group sampling -inherit=0 - -# sampling disabled -sample_freq=0 -sample_period=0 -freq=0 -write_backward=0 diff --git a/tools/perf/tests/attr/test-record-group-sampling1 b/tools/perf/tests/attr/test-record-group-sampling1 deleted file mode 100644 index 4748ab7bf684..000000000000 --- a/tools/perf/tests/attr/test-record-group-sampling1 +++ /dev/null @@ -1,50 +0,0 @@ -[config] -command = record -args = --no-bpf-event -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 -ret = 1 -kernel_since = 6.12 - -[event-1:base-record] -fd=1 -group_fd=-1 - -# cycles -type=0 -config=0 - -# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD -sample_type=343 - -# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING -read_format=28|31 -task=1 -mmap=1 -comm=1 -enable_on_exec=1 -disabled=1 - -# inherit is enabled for group sampling -inherit=1 - -[event-2:base-record] -fd=2 -group_fd=1 - -# cache-misses -type=0 -config=3 - -# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD -sample_type=343 - -# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING -read_format=28|31 -task=0 -mmap=0 -comm=0 -enable_on_exec=0 -disabled=0 -freq=0 - -# inherit is enabled for group sampling -inherit=1 diff --git a/tools/perf/tests/attr/test-record-group-sampling2 b/tools/perf/tests/attr/test-record-group-sampling2 deleted file mode 100644 index e0432244a0eb..000000000000 --- a/tools/perf/tests/attr/test-record-group-sampling2 +++ /dev/null @@ -1,61 +0,0 @@ -[config] -command = record -args = --no-bpf-event -c 10000 -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 -ret = 1 -kernel_since = 6.12 - -[event-1:base-record] -fd=1 -group_fd=-1 - -# cycles -type=0 -config=0 - -# default | PERF_SAMPLE_READ -sample_type=87 - -# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING -read_format=28|31 -task=1 -mmap=1 -comm=1 -enable_on_exec=1 -disabled=1 - -# inherit is enabled for group sampling -inherit=1 - -# sampling disabled -sample_freq=0 -sample_period=10000 -freq=0 -write_backward=0 - -[event-2:base-record] -fd=2 -group_fd=1 - -# cache-misses -type=0 -config=3 - -# default | PERF_SAMPLE_READ -sample_type=87 - -# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING -read_format=28|31 -task=0 -mmap=0 -comm=0 -enable_on_exec=0 -disabled=0 - -# inherit is enabled for group sampling -inherit=1 - -# sampling disabled -sample_freq=0 -sample_period=0 -freq=0 -write_backward=0 diff --git a/tools/perf/tests/attr/test-record-group1 b/tools/perf/tests/attr/test-record-group1 deleted file mode 100644 index eeb1db392bc9..000000000000 --- a/tools/perf/tests/attr/test-record-group1 +++ /dev/null @@ -1,23 +0,0 @@ -[config] -command = record -args = --no-bpf-event -e '{cycles,instructions}' kill >/dev/null 2>&1 -ret = 1 - -[event-1:base-record] -fd=1 -group_fd=-1 -sample_type=327 -read_format=4|20 - -[event-2:base-record] -fd=2 -group_fd=1 -type=0 -config=1 -sample_type=327 -read_format=4|20 -mmap=0 -comm=0 -task=0 -enable_on_exec=0 -disabled=0 diff --git a/tools/perf/tests/attr/test-record-group2 b/tools/perf/tests/attr/test-record-group2 deleted file mode 100644 index 891d41a7bddf..000000000000 --- a/tools/perf/tests/attr/test-record-group2 +++ /dev/null @@ -1,30 +0,0 @@ -[config] -command = record -args = --no-bpf-event -e '{cycles/period=1234000/,instructions/period=6789000/}:S' kill >/dev/null 2>&1 -ret = 1 -kernel_until = 6.12 - -[event-1:base-record] -fd=1 -group_fd=-1 -config=0|1 -sample_period=1234000 -sample_type=87 -read_format=12|28 -inherit=0 -freq=0 - -[event-2:base-record] -fd=2 -group_fd=1 -config=0|1 -sample_period=6789000 -sample_type=87 -read_format=12|28 -disabled=0 -inherit=0 -mmap=0 -comm=0 -freq=0 -enable_on_exec=0 -task=0 diff --git a/tools/perf/tests/attr/test-record-group3 b/tools/perf/tests/attr/test-record-group3 deleted file mode 100644 index 249be884959e..000000000000 --- a/tools/perf/tests/attr/test-record-group3 +++ /dev/null @@ -1,31 +0,0 @@ -[config] -command = record -args = --no-bpf-event -e '{cycles/period=1234000/,instructions/period=6789000/}:S' kill >/dev/null 2>&1 -ret = 1 -kernel_since = 6.12 - -[event-1:base-record] -fd=1 -group_fd=-1 -config=0|1 -sample_period=1234000 -sample_type=87 -read_format=28|31 -disabled=1 -inherit=1 -freq=0 - -[event-2:base-record] -fd=2 -group_fd=1 -config=0|1 -sample_period=6789000 -sample_type=87 -read_format=28|31 -disabled=0 -inherit=1 -mmap=0 -comm=0 -freq=0 -enable_on_exec=0 -task=0 diff --git a/tools/perf/tests/attr/test-record-no-buffering b/tools/perf/tests/attr/test-record-no-buffering deleted file mode 100644 index 583dcbb078ba..000000000000 --- a/tools/perf/tests/attr/test-record-no-buffering +++ /dev/null @@ -1,9 +0,0 @@ -[config] -command = record -args = --no-bpf-event --no-buffering kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=263 -watermark=0 -wakeup_events=1 diff --git a/tools/perf/tests/attr/test-record-no-inherit b/tools/perf/tests/attr/test-record-no-inherit deleted file mode 100644 index 15d1dc162e1c..000000000000 --- a/tools/perf/tests/attr/test-record-no-inherit +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -i kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=263 -inherit=0 diff --git a/tools/perf/tests/attr/test-record-no-samples b/tools/perf/tests/attr/test-record-no-samples deleted file mode 100644 index 596fbd6d5a2c..000000000000 --- a/tools/perf/tests/attr/test-record-no-samples +++ /dev/null @@ -1,7 +0,0 @@ -[config] -command = record -args = --no-bpf-event -n kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_period=0 diff --git a/tools/perf/tests/attr/test-record-period b/tools/perf/tests/attr/test-record-period deleted file mode 100644 index 119101154c5e..000000000000 --- a/tools/perf/tests/attr/test-record-period +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = record -args = --no-bpf-event -c 100 -P kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_period=100 -freq=0 diff --git a/tools/perf/tests/attr/test-record-pfm-period b/tools/perf/tests/attr/test-record-pfm-period deleted file mode 100644 index 368f5b814094..000000000000 --- a/tools/perf/tests/attr/test-record-pfm-period +++ /dev/null @@ -1,9 +0,0 @@ -[config] -command = record -args = --no-bpf-event -c 10000 --pfm-events=cycles:period=77777 kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_period=77777 -sample_type=7 -freq=0 diff --git a/tools/perf/tests/attr/test-record-raw b/tools/perf/tests/attr/test-record-raw deleted file mode 100644 index 13a5f7860c78..000000000000 --- a/tools/perf/tests/attr/test-record-raw +++ /dev/null @@ -1,7 +0,0 @@ -[config] -command = record -args = --no-bpf-event -R kill >/dev/null 2>&1 -ret = 1 - -[event:base-record] -sample_type=1415 diff --git a/tools/perf/tests/attr/test-record-spe-period b/tools/perf/tests/attr/test-record-spe-period deleted file mode 100644 index 75f8c9cd8e3f..000000000000 --- a/tools/perf/tests/attr/test-record-spe-period +++ /dev/null @@ -1,12 +0,0 @@ -[config] -command = record -args = --no-bpf-event -c 2 -e arm_spe_0// -- kill >/dev/null 2>&1 -ret = 1 -arch = aarch64 - -[event-10:base-record-spe] -sample_period=2 -freq=0 - -# dummy event -[event-1:base-record-spe] diff --git a/tools/perf/tests/attr/test-record-spe-period-term b/tools/perf/tests/attr/test-record-spe-period-term deleted file mode 100644 index 8f60a4fec657..000000000000 --- a/tools/perf/tests/attr/test-record-spe-period-term +++ /dev/null @@ -1,12 +0,0 @@ -[config] -command = record -args = --no-bpf-event -e arm_spe_0/period=3/ -- kill >/dev/null 2>&1 -ret = 1 -arch = aarch64 - -[event-10:base-record-spe] -sample_period=3 -freq=0 - -# dummy event -[event-1:base-record-spe] diff --git a/tools/perf/tests/attr/test-record-spe-physical-address b/tools/perf/tests/attr/test-record-spe-physical-address deleted file mode 100644 index 7ebcf5012ce3..000000000000 --- a/tools/perf/tests/attr/test-record-spe-physical-address +++ /dev/null @@ -1,12 +0,0 @@ -[config] -command = record -args = --no-bpf-event -e arm_spe_0/pa_enable=1/ -- kill >/dev/null 2>&1 -ret = 1 -arch = aarch64 - -[event-10:base-record-spe] -# 622727 is the decimal of IP|TID|TIME|CPU|IDENTIFIER|DATA_SRC|PHYS_ADDR -sample_type=622727 - -# dummy event -[event-1:base-record-spe] \ No newline at end of file diff --git a/tools/perf/tests/attr/test-record-user-regs-no-sve-aarch64 b/tools/perf/tests/attr/test-record-user-regs-no-sve-aarch64 deleted file mode 100644 index bed765450ca9..000000000000 --- a/tools/perf/tests/attr/test-record-user-regs-no-sve-aarch64 +++ /dev/null @@ -1,9 +0,0 @@ -# Test that asking for VG fails if the system doesn't support SVE. This -# applies both before and after the feature was added in 6.1 -[config] -command = record -args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1 -ret = 129 -test_ret = true -arch = aarch64 -auxv = auxv["AT_HWCAP"] & 0x400000 == 0 diff --git a/tools/perf/tests/attr/test-record-user-regs-old-sve-aarch64 b/tools/perf/tests/attr/test-record-user-regs-old-sve-aarch64 deleted file mode 100644 index 15ebfc3418e3..000000000000 --- a/tools/perf/tests/attr/test-record-user-regs-old-sve-aarch64 +++ /dev/null @@ -1,10 +0,0 @@ -# Test that asking for VG always fails on old kernels because it was -# added in 6.1. This applies to systems that either support or don't -# support SVE. -[config] -command = record -args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1 -ret = 129 -test_ret = true -arch = aarch64 -kernel_until = 6.1 diff --git a/tools/perf/tests/attr/test-record-user-regs-sve-aarch64 b/tools/perf/tests/attr/test-record-user-regs-sve-aarch64 deleted file mode 100644 index a65113cd7311..000000000000 --- a/tools/perf/tests/attr/test-record-user-regs-sve-aarch64 +++ /dev/null @@ -1,14 +0,0 @@ -# Test that asking for VG works if the system has SVE and after the -# feature was added in 6.1 -[config] -command = record -args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1 -ret = 1 -test_ret = true -arch = aarch64 -auxv = auxv["AT_HWCAP"] & 0x400000 == 0x400000 -kernel_since = 6.1 - -[event:base-record] -sample_type=4359 -sample_regs_user=70368744177664 diff --git a/tools/perf/tests/attr/test-stat-C0 b/tools/perf/tests/attr/test-stat-C0 deleted file mode 100644 index a2c76d10b2bb..000000000000 --- a/tools/perf/tests/attr/test-stat-C0 +++ /dev/null @@ -1,10 +0,0 @@ -[config] -command = stat -args = -e cycles -C 0 kill >/dev/null 2>&1 -ret = 1 - -[event:base-stat] -# events are disabled by default when attached to cpu -disabled=1 -enable_on_exec=0 -optional=1 diff --git a/tools/perf/tests/attr/test-stat-basic b/tools/perf/tests/attr/test-stat-basic deleted file mode 100644 index 69867d049fda..000000000000 --- a/tools/perf/tests/attr/test-stat-basic +++ /dev/null @@ -1,7 +0,0 @@ -[config] -command = stat -args = -e cycles kill >/dev/null 2>&1 -ret = 1 - -[event:base-stat] -optional=1 diff --git a/tools/perf/tests/attr/test-stat-default b/tools/perf/tests/attr/test-stat-default deleted file mode 100644 index e47fb4944679..000000000000 --- a/tools/perf/tests/attr/test-stat-default +++ /dev/null @@ -1,229 +0,0 @@ -[config] -command = stat -args = kill >/dev/null 2>&1 -ret = 1 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK -[event1:base-stat] -fd=1 -type=1 -config=1 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES -[event2:base-stat] -fd=2 -type=1 -config=3 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS -[event3:base-stat] -fd=3 -type=1 -config=4 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS -[event4:base-stat] -fd=4 -type=1 -config=2 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES -[event5:base-stat] -fd=5 -type=0 -config=0 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND -[event6:base-stat] -fd=6 -type=0 -config=7 -optional=1 -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND -[event7:base-stat] -fd=7 -type=0 -config=8 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS -[event8:base-stat] -fd=8 -type=0 -config=1 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS -[event9:base-stat] -fd=9 -type=0 -config=4 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES -[event10:base-stat] -fd=10 -type=0 -config=5 -optional=1 - -# PERF_TYPE_RAW / slots (0x400) -[event11:base-stat] -fd=11 -group_fd=-1 -type=4 -config=1024 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-retiring (0x8000) -[event12:base-stat] -fd=12 -group_fd=11 -type=4 -config=32768 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-bad-spec (0x8100) -[event13:base-stat] -fd=13 -group_fd=11 -type=4 -config=33024 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-fe-bound (0x8200) -[event14:base-stat] -fd=14 -group_fd=11 -type=4 -config=33280 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-be-bound (0x8300) -[event15:base-stat] -fd=15 -group_fd=11 -type=4 -config=33536 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) -[event16:base-stat] -fd=16 -group_fd=11 -type=4 -config=33792 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) -[event17:base-stat] -fd=17 -group_fd=11 -type=4 -config=34048 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) -[event18:base-stat] -fd=18 -group_fd=11 -type=4 -config=34304 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-mem-bound (0x8700) -[event19:base-stat] -fd=19 -group_fd=11 -type=4 -config=34560 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING -[event20:base-stat] -fd=20 -type=4 -config=4109 -optional=1 - -# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ -[event21:base-stat] -fd=21 -type=4 -config=17039629 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD -[event22:base-stat] -fd=22 -type=4 -config=60 -optional=1 - -# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY -[event23:base-stat] -fd=23 -type=4 -config=2097421 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK -[event24:base-stat] -fd=24 -type=4 -config=316 -optional=1 - -# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE -[event25:base-stat] -fd=25 -type=4 -config=412 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE -[event26:base-stat] -fd=26 -type=4 -config=572 -optional=1 - -# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS -[event27:base-stat] -fd=27 -type=4 -config=706 -optional=1 - -# PERF_TYPE_RAW / UOPS_ISSUED.ANY -[event28:base-stat] -fd=28 -type=4 -config=270 -optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-1 b/tools/perf/tests/attr/test-stat-detailed-1 deleted file mode 100644 index 3d500d3e0c5c..000000000000 --- a/tools/perf/tests/attr/test-stat-detailed-1 +++ /dev/null @@ -1,271 +0,0 @@ -[config] -command = stat -args = -d kill >/dev/null 2>&1 -ret = 1 - - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK -[event1:base-stat] -fd=1 -type=1 -config=1 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES -[event2:base-stat] -fd=2 -type=1 -config=3 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS -[event3:base-stat] -fd=3 -type=1 -config=4 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS -[event4:base-stat] -fd=4 -type=1 -config=2 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES -[event5:base-stat] -fd=5 -type=0 -config=0 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND -[event6:base-stat] -fd=6 -type=0 -config=7 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND -[event7:base-stat] -fd=7 -type=0 -config=8 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS -[event8:base-stat] -fd=8 -type=0 -config=1 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS -[event9:base-stat] -fd=9 -type=0 -config=4 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES -[event10:base-stat] -fd=10 -type=0 -config=5 -optional=1 - -# PERF_TYPE_RAW / slots (0x400) -[event11:base-stat] -fd=11 -group_fd=-1 -type=4 -config=1024 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-retiring (0x8000) -[event12:base-stat] -fd=12 -group_fd=11 -type=4 -config=32768 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-bad-spec (0x8100) -[event13:base-stat] -fd=13 -group_fd=11 -type=4 -config=33024 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-fe-bound (0x8200) -[event14:base-stat] -fd=14 -group_fd=11 -type=4 -config=33280 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-be-bound (0x8300) -[event15:base-stat] -fd=15 -group_fd=11 -type=4 -config=33536 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) -[event16:base-stat] -fd=16 -group_fd=11 -type=4 -config=33792 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) -[event17:base-stat] -fd=17 -group_fd=11 -type=4 -config=34048 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) -[event18:base-stat] -fd=18 -group_fd=11 -type=4 -config=34304 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-mem-bound (0x8700) -[event19:base-stat] -fd=19 -group_fd=11 -type=4 -config=34560 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING -[event20:base-stat] -fd=20 -type=4 -config=4109 -optional=1 - -# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ -[event21:base-stat] -fd=21 -type=4 -config=17039629 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD -[event22:base-stat] -fd=22 -type=4 -config=60 -optional=1 - -# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY -[event23:base-stat] -fd=23 -type=4 -config=2097421 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK -[event24:base-stat] -fd=24 -type=4 -config=316 -optional=1 - -# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE -[event25:base-stat] -fd=25 -type=4 -config=412 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE -[event26:base-stat] -fd=26 -type=4 -config=572 -optional=1 - -# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS -[event27:base-stat] -fd=27 -type=4 -config=706 -optional=1 - -# PERF_TYPE_RAW / UOPS_ISSUED.ANY -[event28:base-stat] -fd=28 -type=4 -config=270 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_L1D << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event29:base-stat] -fd=29 -type=3 -config=0 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_L1D << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event30:base-stat] -fd=30 -type=3 -config=65536 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_LL << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event31:base-stat] -fd=31 -type=3 -config=2 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_LL << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event32:base-stat] -fd=32 -type=3 -config=65538 -optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-2 b/tools/perf/tests/attr/test-stat-detailed-2 deleted file mode 100644 index 01777a63752f..000000000000 --- a/tools/perf/tests/attr/test-stat-detailed-2 +++ /dev/null @@ -1,331 +0,0 @@ -[config] -command = stat -args = -dd kill >/dev/null 2>&1 -ret = 1 - - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK -[event1:base-stat] -fd=1 -type=1 -config=1 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES -[event2:base-stat] -fd=2 -type=1 -config=3 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS -[event3:base-stat] -fd=3 -type=1 -config=4 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS -[event4:base-stat] -fd=4 -type=1 -config=2 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES -[event5:base-stat] -fd=5 -type=0 -config=0 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND -[event6:base-stat] -fd=6 -type=0 -config=7 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND -[event7:base-stat] -fd=7 -type=0 -config=8 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS -[event8:base-stat] -fd=8 -type=0 -config=1 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS -[event9:base-stat] -fd=9 -type=0 -config=4 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES -[event10:base-stat] -fd=10 -type=0 -config=5 -optional=1 - -# PERF_TYPE_RAW / slots (0x400) -[event11:base-stat] -fd=11 -group_fd=-1 -type=4 -config=1024 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-retiring (0x8000) -[event12:base-stat] -fd=12 -group_fd=11 -type=4 -config=32768 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-bad-spec (0x8100) -[event13:base-stat] -fd=13 -group_fd=11 -type=4 -config=33024 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-fe-bound (0x8200) -[event14:base-stat] -fd=14 -group_fd=11 -type=4 -config=33280 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-be-bound (0x8300) -[event15:base-stat] -fd=15 -group_fd=11 -type=4 -config=33536 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) -[event16:base-stat] -fd=16 -group_fd=11 -type=4 -config=33792 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) -[event17:base-stat] -fd=17 -group_fd=11 -type=4 -config=34048 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) -[event18:base-stat] -fd=18 -group_fd=11 -type=4 -config=34304 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-mem-bound (0x8700) -[event19:base-stat] -fd=19 -group_fd=11 -type=4 -config=34560 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING -[event20:base-stat] -fd=20 -type=4 -config=4109 -optional=1 - -# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ -[event21:base-stat] -fd=21 -type=4 -config=17039629 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD -[event22:base-stat] -fd=22 -type=4 -config=60 -optional=1 - -# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY -[event23:base-stat] -fd=23 -type=4 -config=2097421 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK -[event24:base-stat] -fd=24 -type=4 -config=316 -optional=1 - -# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE -[event25:base-stat] -fd=25 -type=4 -config=412 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE -[event26:base-stat] -fd=26 -type=4 -config=572 -optional=1 - -# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS -[event27:base-stat] -fd=27 -type=4 -config=706 -optional=1 - -# PERF_TYPE_RAW / UOPS_ISSUED.ANY -[event28:base-stat] -fd=28 -type=4 -config=270 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_L1D << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event29:base-stat] -fd=29 -type=3 -config=0 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_L1D << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event30:base-stat] -fd=30 -type=3 -config=65536 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_LL << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event31:base-stat] -fd=31 -type=3 -config=2 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_LL << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event32:base-stat] -fd=32 -type=3 -config=65538 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_L1I << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event33:base-stat] -fd=33 -type=3 -config=1 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_L1I << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event34:base-stat] -fd=34 -type=3 -config=65537 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_DTLB << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event35:base-stat] -fd=35 -type=3 -config=3 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_DTLB << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event36:base-stat] -fd=36 -type=3 -config=65539 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_ITLB << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event37:base-stat] -fd=37 -type=3 -config=4 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_ITLB << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event38:base-stat] -fd=38 -type=3 -config=65540 -optional=1 diff --git a/tools/perf/tests/attr/test-stat-detailed-3 b/tools/perf/tests/attr/test-stat-detailed-3 deleted file mode 100644 index 8400abd7e1e4..000000000000 --- a/tools/perf/tests/attr/test-stat-detailed-3 +++ /dev/null @@ -1,351 +0,0 @@ -[config] -command = stat -args = -ddd kill >/dev/null 2>&1 -ret = 1 - - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK -[event1:base-stat] -fd=1 -type=1 -config=1 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES -[event2:base-stat] -fd=2 -type=1 -config=3 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS -[event3:base-stat] -fd=3 -type=1 -config=4 - -# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS -[event4:base-stat] -fd=4 -type=1 -config=2 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES -[event5:base-stat] -fd=5 -type=0 -config=0 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND -[event6:base-stat] -fd=6 -type=0 -config=7 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND -[event7:base-stat] -fd=7 -type=0 -config=8 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS -[event8:base-stat] -fd=8 -type=0 -config=1 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS -[event9:base-stat] -fd=9 -type=0 -config=4 -optional=1 - -# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES -[event10:base-stat] -fd=10 -type=0 -config=5 -optional=1 - -# PERF_TYPE_RAW / slots (0x400) -[event11:base-stat] -fd=11 -group_fd=-1 -type=4 -config=1024 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-retiring (0x8000) -[event12:base-stat] -fd=12 -group_fd=11 -type=4 -config=32768 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-bad-spec (0x8100) -[event13:base-stat] -fd=13 -group_fd=11 -type=4 -config=33024 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-fe-bound (0x8200) -[event14:base-stat] -fd=14 -group_fd=11 -type=4 -config=33280 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-be-bound (0x8300) -[event15:base-stat] -fd=15 -group_fd=11 -type=4 -config=33536 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) -[event16:base-stat] -fd=16 -group_fd=11 -type=4 -config=33792 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) -[event17:base-stat] -fd=17 -group_fd=11 -type=4 -config=34048 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) -[event18:base-stat] -fd=18 -group_fd=11 -type=4 -config=34304 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / topdown-mem-bound (0x8700) -[event19:base-stat] -fd=19 -group_fd=11 -type=4 -config=34560 -disabled=0 -enable_on_exec=0 -read_format=15 -optional=1 - -# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING -[event20:base-stat] -fd=20 -type=4 -config=4109 -optional=1 - -# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ -[event21:base-stat] -fd=21 -type=4 -config=17039629 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD -[event22:base-stat] -fd=22 -type=4 -config=60 -optional=1 - -# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY -[event23:base-stat] -fd=23 -type=4 -config=2097421 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK -[event24:base-stat] -fd=24 -type=4 -config=316 -optional=1 - -# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE -[event25:base-stat] -fd=25 -type=4 -config=412 -optional=1 - -# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE -[event26:base-stat] -fd=26 -type=4 -config=572 -optional=1 - -# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS -[event27:base-stat] -fd=27 -type=4 -config=706 -optional=1 - -# PERF_TYPE_RAW / UOPS_ISSUED.ANY -[event28:base-stat] -fd=28 -type=4 -config=270 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_L1D << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event29:base-stat] -fd=29 -type=3 -config=0 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_L1D << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event30:base-stat] -fd=30 -type=3 -config=65536 -optional=1 - -# PERF_TYPE_HW_CACHE / -# PERF_COUNT_HW_CACHE_LL << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event31:base-stat] -fd=31 -type=3 -config=2 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_LL << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event32:base-stat] -fd=32 -type=3 -config=65538 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_L1I << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event33:base-stat] -fd=33 -type=3 -config=1 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_L1I << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event34:base-stat] -fd=34 -type=3 -config=65537 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_DTLB << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event35:base-stat] -fd=35 -type=3 -config=3 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_DTLB << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event36:base-stat] -fd=36 -type=3 -config=65539 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_ITLB << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event37:base-stat] -fd=37 -type=3 -config=4 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_ITLB << 0 | -# (PERF_COUNT_HW_CACHE_OP_READ << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event38:base-stat] -fd=38 -type=3 -config=65540 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_L1D << 0 | -# (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) -[event39:base-stat] -fd=39 -type=3 -config=512 -optional=1 - -# PERF_TYPE_HW_CACHE, -# PERF_COUNT_HW_CACHE_L1D << 0 | -# (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | -# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) -[event40:base-stat] -fd=40 -type=3 -config=66048 -optional=1 diff --git a/tools/perf/tests/attr/test-stat-group1 b/tools/perf/tests/attr/test-stat-group1 deleted file mode 100644 index 1746751123dc..000000000000 --- a/tools/perf/tests/attr/test-stat-group1 +++ /dev/null @@ -1,17 +0,0 @@ -[config] -command = stat -args = -e '{cycles,instructions}' kill >/dev/null 2>&1 -ret = 1 - -[event-1:base-stat] -fd=1 -group_fd=-1 -read_format=3|15 - -[event-2:base-stat] -fd=2 -group_fd=1 -config=1 -disabled=0 -enable_on_exec=0 -read_format=3|15 diff --git a/tools/perf/tests/attr/test-stat-no-inherit b/tools/perf/tests/attr/test-stat-no-inherit deleted file mode 100644 index 924fbb9300d1..000000000000 --- a/tools/perf/tests/attr/test-stat-no-inherit +++ /dev/null @@ -1,8 +0,0 @@ -[config] -command = stat -args = -i -e cycles kill >/dev/null 2>&1 -ret = 1 - -[event:base-stat] -inherit=0 -optional=1 diff --git a/tools/perf/tests/shell/attr.sh b/tools/perf/tests/shell/attr.sh index e094f3baffb7..5a4e43b2471d 100755 --- a/tools/perf/tests/shell/attr.sh +++ b/tools/perf/tests/shell/attr.sh @@ -17,6 +17,6 @@ trap trap_cleanup EXIT TERM INT shelldir=$(dirname "$0") perf_path=$(which perf) -python "${shelldir}"/../attr.py -d "${shelldir}"/../attr -v -p "$perf_path" +python "${shelldir}"/lib/attr.py -d "${shelldir}"/attr -v -p "$perf_path" cleanup exit $err diff --git a/tools/perf/tests/shell/attr/README b/tools/perf/tests/shell/attr/README new file mode 100644 index 000000000000..67c4ca76b85d --- /dev/null +++ b/tools/perf/tests/shell/attr/README @@ -0,0 +1,71 @@ +The struct perf_event_attr test (attr tests) support +==================================================== +This testing support is embedded into perf directly and is governed +by the PERF_TEST_ATTR environment variable and hook inside the +sys_perf_event_open function. + +The general idea is to store 'struct perf_event_attr' details for +each event created within single perf command. Each event details +are stored into separate text file. Once perf command is finished +these files are checked for values we expect for command. + +The attr tests consist of following parts: + +tests/attr.c +------------ +This is the sys_perf_event_open hook implementation. The hook +is triggered when the PERF_TEST_ATTR environment variable is +defined. It must contain name of existing directory with access +and write permissions. + +For each sys_perf_event_open call event details are stored in +separate file. Besides 'struct perf_event_attr' values we also +store 'fd' and 'group_fd' values to allow checking for groups. + +tests/attr.py +------------- +This is the python script that does all the hard work. It reads +the test definition, executes it and checks results. + +tests/attr/ +----------- +Directory containing all attr test definitions. +Following tests are defined (with perf commands): + + perf record kill (test-record-basic) + perf record -b kill (test-record-branch-any) + perf record -j any kill (test-record-branch-filter-any) + perf record -j any_call kill (test-record-branch-filter-any_call) + perf record -j any_ret kill (test-record-branch-filter-any_ret) + perf record -j hv kill (test-record-branch-filter-hv) + perf record -j ind_call kill (test-record-branch-filter-ind_call) + perf record -j k kill (test-record-branch-filter-k) + perf record -j u kill (test-record-branch-filter-u) + perf record -c 123 kill (test-record-count) + perf record -d kill (test-record-data) + perf record -F 100 kill (test-record-freq) + perf record -g kill (test-record-graph-default) + perf record -g kill (test-record-graph-default-aarch64) + perf record --call-graph dwarf kill (test-record-graph-dwarf) + perf record --call-graph fp kill (test-record-graph-fp) + perf record --call-graph fp kill (test-record-graph-fp-aarch64) + perf record -e '{cycles,instructions}' kill (test-record-group1) + perf record -e '{cycles/period=1/,instructions/period=2/}:S' kill (test-record-group2) + perf record -e '{cycles,cache-misses}:S' kill (test-record-group-sampling1) + perf record -c 10000 -e '{cycles,cache-misses}:S' kill (test-record-group-sampling2) + perf record -D kill (test-record-no-delay) + perf record -i kill (test-record-no-inherit) + perf record -n kill (test-record-no-samples) + perf record -c 100 -P kill (test-record-period) + perf record -c 1 --pfm-events=cycles:period=2 (test-record-pfm-period) + perf record -R kill (test-record-raw) + perf record -c 2 -e arm_spe_0// -- kill (test-record-spe-period) + perf record -e arm_spe_0/period=3/ -- kill (test-record-spe-period-term) + perf record -e arm_spe_0/pa_enable=1/ -- kill (test-record-spe-physical-address) + perf stat -e cycles kill (test-stat-basic) + perf stat kill (test-stat-default) + perf stat -d kill (test-stat-detailed-1) + perf stat -dd kill (test-stat-detailed-2) + perf stat -ddd kill (test-stat-detailed-3) + perf stat -e '{cycles,instructions}' kill (test-stat-group1) + perf stat -i -e cycles kill (test-stat-no-inherit) diff --git a/tools/perf/tests/shell/attr/base-record b/tools/perf/tests/shell/attr/base-record new file mode 100644 index 000000000000..b44e4e6e4443 --- /dev/null +++ b/tools/perf/tests/shell/attr/base-record @@ -0,0 +1,41 @@ +[event] +fd=1 +group_fd=-1 +# 0 or PERF_FLAG_FD_CLOEXEC flag +flags=0|8 +cpu=* +type=0|1 +size=136 +config=0|1 +sample_period=* +sample_type=263 +read_format=0|4|20 +disabled=1 +inherit=1 +pinned=0 +exclusive=0 +exclude_user=0 +exclude_kernel=0|1 +exclude_hv=0|1 +exclude_idle=0 +mmap=1 +comm=1 +freq=1 +inherit_stat=0 +enable_on_exec=1 +task=1 +watermark=0 +precise_ip=0|1|2|3 +mmap_data=0 +sample_id_all=1 +exclude_host=0|1 +exclude_guest=0|1 +exclude_callchain_kernel=0 +exclude_callchain_user=0 +wakeup_events=0 +bp_type=0 +config1=0 +config2=0 +branch_sample_type=0 +sample_regs_user=0 +sample_stack_user=0 diff --git a/tools/perf/tests/shell/attr/base-record-spe b/tools/perf/tests/shell/attr/base-record-spe new file mode 100644 index 000000000000..08fa96b59240 --- /dev/null +++ b/tools/perf/tests/shell/attr/base-record-spe @@ -0,0 +1,40 @@ +[event] +fd=* +group_fd=-1 +flags=* +cpu=* +type=* +size=* +config=* +sample_period=* +sample_type=* +read_format=* +disabled=* +inherit=* +pinned=* +exclusive=* +exclude_user=* +exclude_kernel=* +exclude_hv=* +exclude_idle=* +mmap=* +comm=* +freq=* +inherit_stat=* +enable_on_exec=* +task=* +watermark=* +precise_ip=* +mmap_data=* +sample_id_all=* +exclude_host=* +exclude_guest=* +exclude_callchain_kernel=* +exclude_callchain_user=* +wakeup_events=* +bp_type=* +config1=* +config2=* +branch_sample_type=* +sample_regs_user=* +sample_stack_user=* diff --git a/tools/perf/tests/shell/attr/base-stat b/tools/perf/tests/shell/attr/base-stat new file mode 100644 index 000000000000..fccd8ec4d1b0 --- /dev/null +++ b/tools/perf/tests/shell/attr/base-stat @@ -0,0 +1,41 @@ +[event] +fd=1 +group_fd=-1 +# 0 or PERF_FLAG_FD_CLOEXEC flag +flags=0|8 +cpu=* +type=0 +size=136 +config=0 +sample_period=0 +sample_type=65536 +read_format=3 +disabled=1 +inherit=1 +pinned=0 +exclusive=0 +exclude_user=0 +exclude_kernel=0|1 +exclude_hv=0|1 +exclude_idle=0 +mmap=0 +comm=0 +freq=0 +inherit_stat=0 +enable_on_exec=1 +task=0 +watermark=0 +precise_ip=0 +mmap_data=0 +sample_id_all=0 +exclude_host=0|1 +exclude_guest=0|1 +exclude_callchain_kernel=0 +exclude_callchain_user=0 +wakeup_events=0 +bp_type=0 +config1=0 +config2=0 +branch_sample_type=0 +sample_regs_user=0 +sample_stack_user=0 diff --git a/tools/perf/tests/shell/attr/system-wide-dummy b/tools/perf/tests/shell/attr/system-wide-dummy new file mode 100644 index 000000000000..a1e1d6a263bf --- /dev/null +++ b/tools/perf/tests/shell/attr/system-wide-dummy @@ -0,0 +1,52 @@ +# Event added by system-wide or CPU perf-record to handle the race of +# processes starting while /proc is processed. +[event] +fd=1 +group_fd=-1 +cpu=* +pid=-1 +flags=8 +type=1 +size=136 +config=9 +sample_period=1 +# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | +# PERF_SAMPLE_CPU | PERF_SAMPLE_IDENTIFIER +sample_type=65671 +read_format=4|20 +# Event will be enabled right away. +disabled=0 +inherit=1 +pinned=0 +exclusive=0 +exclude_user=0 +exclude_kernel=1 +exclude_hv=1 +exclude_idle=0 +mmap=1 +comm=1 +freq=0 +inherit_stat=0 +enable_on_exec=0 +task=1 +watermark=0 +precise_ip=0 +mmap_data=0 +sample_id_all=1 +exclude_host=0 +exclude_guest=1 +exclude_callchain_kernel=0 +exclude_callchain_user=0 +mmap2=1 +comm_exec=1 +context_switch=0 +write_backward=0 +namespaces=0 +use_clockid=0 +wakeup_events=0 +bp_type=0 +config1=0 +config2=0 +branch_sample_type=0 +sample_regs_user=0 +sample_stack_user=0 diff --git a/tools/perf/tests/shell/attr/test-record-C0 b/tools/perf/tests/shell/attr/test-record-C0 new file mode 100644 index 000000000000..1049ac8b52f2 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-C0 @@ -0,0 +1,24 @@ +[config] +command = record +args = --no-bpf-event -C 0 kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +cpu=0 + +# no enable on exec for CPU attached +enable_on_exec=0 + +# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | +# PERF_SAMPLE_PERIOD | PERF_SAMPLE_IDENTIFIER +# + PERF_SAMPLE_CPU added by -C 0 +sample_type=65927 + +# Dummy event handles mmaps, comm and task. +mmap=0 +comm=0 +task=0 +inherit=0 + +[event:system-wide-dummy] +inherit=0 diff --git a/tools/perf/tests/shell/attr/test-record-basic b/tools/perf/tests/shell/attr/test-record-basic new file mode 100644 index 000000000000..b0ca42a5ecc9 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-basic @@ -0,0 +1,6 @@ +[config] +command = record +args = --no-bpf-event kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] diff --git a/tools/perf/tests/shell/attr/test-record-branch-any b/tools/perf/tests/shell/attr/test-record-branch-any new file mode 100644 index 000000000000..1a99b3ce6b89 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-branch-any @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -b kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/shell/attr/test-record-branch-filter-any b/tools/perf/tests/shell/attr/test-record-branch-filter-any new file mode 100644 index 000000000000..709768b508c6 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-branch-filter-any @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j any kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/shell/attr/test-record-branch-filter-any_call b/tools/perf/tests/shell/attr/test-record-branch-filter-any_call new file mode 100644 index 000000000000..f943221f7825 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-branch-filter-any_call @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j any_call kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=16 diff --git a/tools/perf/tests/shell/attr/test-record-branch-filter-any_ret b/tools/perf/tests/shell/attr/test-record-branch-filter-any_ret new file mode 100644 index 000000000000..fd4f5b4154a9 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-branch-filter-any_ret @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j any_ret kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=32 diff --git a/tools/perf/tests/shell/attr/test-record-branch-filter-hv b/tools/perf/tests/shell/attr/test-record-branch-filter-hv new file mode 100644 index 000000000000..4e52d685ebe1 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-branch-filter-hv @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j hv kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/shell/attr/test-record-branch-filter-ind_call b/tools/perf/tests/shell/attr/test-record-branch-filter-ind_call new file mode 100644 index 000000000000..e08c6ab3796e --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-branch-filter-ind_call @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j ind_call kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=64 diff --git a/tools/perf/tests/shell/attr/test-record-branch-filter-k b/tools/perf/tests/shell/attr/test-record-branch-filter-k new file mode 100644 index 000000000000..b4b98f84fc2f --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-branch-filter-k @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j k kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/shell/attr/test-record-branch-filter-u b/tools/perf/tests/shell/attr/test-record-branch-filter-u new file mode 100644 index 000000000000..fb9610edbb0d --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-branch-filter-u @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -j u kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=2311 +branch_sample_type=8 diff --git a/tools/perf/tests/shell/attr/test-record-count b/tools/perf/tests/shell/attr/test-record-count new file mode 100644 index 000000000000..5e9b9019d786 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-count @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event -c 123 kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=123 +sample_type=7 +freq=0 diff --git a/tools/perf/tests/shell/attr/test-record-data b/tools/perf/tests/shell/attr/test-record-data new file mode 100644 index 000000000000..a99bb13149c2 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-data @@ -0,0 +1,10 @@ +[config] +command = record +args = --no-bpf-event -d kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +# sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | +# PERF_SAMPLE_ADDR | PERF_SAMPLE_PERIOD | PERF_SAMPLE_DATA_SRC +sample_type=33039 +mmap_data=1 diff --git a/tools/perf/tests/shell/attr/test-record-dummy-C0 b/tools/perf/tests/shell/attr/test-record-dummy-C0 new file mode 100644 index 000000000000..3050298bd614 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-dummy-C0 @@ -0,0 +1,55 @@ +[config] +command = record +args = --no-bpf-event -e dummy -C 0 kill >/dev/null 2>&1 +ret = 1 + +[event] +fd=1 +group_fd=-1 +cpu=0 +pid=-1 +flags=8 +type=1 +size=136 +config=9 +sample_period=4000 +# PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME | +# PERF_SAMPLE_PERIOD +# + PERF_SAMPLE_CPU added by -C 0 +sample_type=391 +read_format=4|20 +disabled=0 +inherit=0 +pinned=0 +exclusive=0 +exclude_user=0 +exclude_kernel=0 +exclude_hv=0 +exclude_idle=0 +mmap=1 +comm=1 +freq=1 +inherit_stat=0 +enable_on_exec=0 +task=1 +watermark=0 +precise_ip=0 +mmap_data=0 +sample_id_all=1 +exclude_host=0 +exclude_guest=1 +exclude_callchain_kernel=0 +exclude_callchain_user=0 +mmap2=1 +comm_exec=1 +context_switch=0 +write_backward=0 +namespaces=0 +use_clockid=0 +wakeup_events=0 +bp_type=0 +config1=0 +config2=0 +branch_sample_type=0 +sample_regs_user=0 +sample_stack_user=0 diff --git a/tools/perf/tests/shell/attr/test-record-freq b/tools/perf/tests/shell/attr/test-record-freq new file mode 100644 index 000000000000..89e29f6b2ae0 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-freq @@ -0,0 +1,7 @@ +[config] +command = record +args = --no-bpf-event -F 100 kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=100 diff --git a/tools/perf/tests/shell/attr/test-record-graph-default b/tools/perf/tests/shell/attr/test-record-graph-default new file mode 100644 index 000000000000..f0a18b4ea4f5 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-graph-default @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event -g kill >/dev/null 2>&1 +ret = 1 +# arm64 enables registers in the default mode (fp) +arch = !aarch64 + +[event:base-record] +sample_type=295 diff --git a/tools/perf/tests/shell/attr/test-record-graph-default-aarch64 b/tools/perf/tests/shell/attr/test-record-graph-default-aarch64 new file mode 100644 index 000000000000..e98d62efb6f7 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-graph-default-aarch64 @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event -g kill >/dev/null 2>&1 +ret = 1 +arch = aarch64 + +[event:base-record] +sample_type=4391 +sample_regs_user=1073741824 diff --git a/tools/perf/tests/shell/attr/test-record-graph-dwarf b/tools/perf/tests/shell/attr/test-record-graph-dwarf new file mode 100644 index 000000000000..ae92061d611d --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-graph-dwarf @@ -0,0 +1,12 @@ +[config] +command = record +args = --no-bpf-event --call-graph dwarf -- kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=45359 +exclude_callchain_user=1 +sample_stack_user=8192 +# TODO different for each arch, no support for that now +sample_regs_user=* +mmap_data=1 diff --git a/tools/perf/tests/shell/attr/test-record-graph-fp b/tools/perf/tests/shell/attr/test-record-graph-fp new file mode 100644 index 000000000000..a6e60e839205 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-graph-fp @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event --call-graph fp kill >/dev/null 2>&1 +ret = 1 +# arm64 enables registers in fp mode +arch = !aarch64 + +[event:base-record] +sample_type=295 diff --git a/tools/perf/tests/shell/attr/test-record-graph-fp-aarch64 b/tools/perf/tests/shell/attr/test-record-graph-fp-aarch64 new file mode 100644 index 000000000000..cbeea9971285 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-graph-fp-aarch64 @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event --call-graph fp kill >/dev/null 2>&1 +ret = 1 +arch = aarch64 + +[event:base-record] +sample_type=4391 +sample_regs_user=1073741824 diff --git a/tools/perf/tests/shell/attr/test-record-group-sampling b/tools/perf/tests/shell/attr/test-record-group-sampling new file mode 100644 index 000000000000..86a940d7895d --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-group-sampling @@ -0,0 +1,40 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 +ret = 1 +kernel_until = 6.12 + +[event-1:base-record] +fd=1 +group_fd=-1 +sample_type=343 +read_format=12|28 +inherit=0 + +[event-2:base-record] +fd=2 +group_fd=1 + +# cache-misses +type=0 +config=3 + +# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD +sample_type=343 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST +read_format=12|28 +task=0 +mmap=0 +comm=0 +enable_on_exec=0 +disabled=0 + +# inherit is disabled for group sampling +inherit=0 + +# sampling disabled +sample_freq=0 +sample_period=0 +freq=0 +write_backward=0 diff --git a/tools/perf/tests/shell/attr/test-record-group-sampling1 b/tools/perf/tests/shell/attr/test-record-group-sampling1 new file mode 100644 index 000000000000..4748ab7bf684 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-group-sampling1 @@ -0,0 +1,50 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 +ret = 1 +kernel_since = 6.12 + +[event-1:base-record] +fd=1 +group_fd=-1 + +# cycles +type=0 +config=0 + +# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD +sample_type=343 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING +read_format=28|31 +task=1 +mmap=1 +comm=1 +enable_on_exec=1 +disabled=1 + +# inherit is enabled for group sampling +inherit=1 + +[event-2:base-record] +fd=2 +group_fd=1 + +# cache-misses +type=0 +config=3 + +# default | PERF_SAMPLE_READ | PERF_SAMPLE_PERIOD +sample_type=343 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING +read_format=28|31 +task=0 +mmap=0 +comm=0 +enable_on_exec=0 +disabled=0 +freq=0 + +# inherit is enabled for group sampling +inherit=1 diff --git a/tools/perf/tests/shell/attr/test-record-group-sampling2 b/tools/perf/tests/shell/attr/test-record-group-sampling2 new file mode 100644 index 000000000000..e0432244a0eb --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-group-sampling2 @@ -0,0 +1,61 @@ +[config] +command = record +args = --no-bpf-event -c 10000 -e '{cycles,cache-misses}:S' kill >/dev/null 2>&1 +ret = 1 +kernel_since = 6.12 + +[event-1:base-record] +fd=1 +group_fd=-1 + +# cycles +type=0 +config=0 + +# default | PERF_SAMPLE_READ +sample_type=87 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING +read_format=28|31 +task=1 +mmap=1 +comm=1 +enable_on_exec=1 +disabled=1 + +# inherit is enabled for group sampling +inherit=1 + +# sampling disabled +sample_freq=0 +sample_period=10000 +freq=0 +write_backward=0 + +[event-2:base-record] +fd=2 +group_fd=1 + +# cache-misses +type=0 +config=3 + +# default | PERF_SAMPLE_READ +sample_type=87 + +# PERF_FORMAT_ID | PERF_FORMAT_GROUP | PERF_FORMAT_LOST | PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING +read_format=28|31 +task=0 +mmap=0 +comm=0 +enable_on_exec=0 +disabled=0 + +# inherit is enabled for group sampling +inherit=1 + +# sampling disabled +sample_freq=0 +sample_period=0 +freq=0 +write_backward=0 diff --git a/tools/perf/tests/shell/attr/test-record-group1 b/tools/perf/tests/shell/attr/test-record-group1 new file mode 100644 index 000000000000..eeb1db392bc9 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-group1 @@ -0,0 +1,23 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles,instructions}' kill >/dev/null 2>&1 +ret = 1 + +[event-1:base-record] +fd=1 +group_fd=-1 +sample_type=327 +read_format=4|20 + +[event-2:base-record] +fd=2 +group_fd=1 +type=0 +config=1 +sample_type=327 +read_format=4|20 +mmap=0 +comm=0 +task=0 +enable_on_exec=0 +disabled=0 diff --git a/tools/perf/tests/shell/attr/test-record-group2 b/tools/perf/tests/shell/attr/test-record-group2 new file mode 100644 index 000000000000..891d41a7bddf --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-group2 @@ -0,0 +1,30 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles/period=1234000/,instructions/period=6789000/}:S' kill >/dev/null 2>&1 +ret = 1 +kernel_until = 6.12 + +[event-1:base-record] +fd=1 +group_fd=-1 +config=0|1 +sample_period=1234000 +sample_type=87 +read_format=12|28 +inherit=0 +freq=0 + +[event-2:base-record] +fd=2 +group_fd=1 +config=0|1 +sample_period=6789000 +sample_type=87 +read_format=12|28 +disabled=0 +inherit=0 +mmap=0 +comm=0 +freq=0 +enable_on_exec=0 +task=0 diff --git a/tools/perf/tests/shell/attr/test-record-group3 b/tools/perf/tests/shell/attr/test-record-group3 new file mode 100644 index 000000000000..249be884959e --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-group3 @@ -0,0 +1,31 @@ +[config] +command = record +args = --no-bpf-event -e '{cycles/period=1234000/,instructions/period=6789000/}:S' kill >/dev/null 2>&1 +ret = 1 +kernel_since = 6.12 + +[event-1:base-record] +fd=1 +group_fd=-1 +config=0|1 +sample_period=1234000 +sample_type=87 +read_format=28|31 +disabled=1 +inherit=1 +freq=0 + +[event-2:base-record] +fd=2 +group_fd=1 +config=0|1 +sample_period=6789000 +sample_type=87 +read_format=28|31 +disabled=0 +inherit=1 +mmap=0 +comm=0 +freq=0 +enable_on_exec=0 +task=0 diff --git a/tools/perf/tests/shell/attr/test-record-no-buffering b/tools/perf/tests/shell/attr/test-record-no-buffering new file mode 100644 index 000000000000..583dcbb078ba --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-no-buffering @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event --no-buffering kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=263 +watermark=0 +wakeup_events=1 diff --git a/tools/perf/tests/shell/attr/test-record-no-inherit b/tools/perf/tests/shell/attr/test-record-no-inherit new file mode 100644 index 000000000000..15d1dc162e1c --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-no-inherit @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -i kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=263 +inherit=0 diff --git a/tools/perf/tests/shell/attr/test-record-no-samples b/tools/perf/tests/shell/attr/test-record-no-samples new file mode 100644 index 000000000000..596fbd6d5a2c --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-no-samples @@ -0,0 +1,7 @@ +[config] +command = record +args = --no-bpf-event -n kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=0 diff --git a/tools/perf/tests/shell/attr/test-record-period b/tools/perf/tests/shell/attr/test-record-period new file mode 100644 index 000000000000..119101154c5e --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-period @@ -0,0 +1,8 @@ +[config] +command = record +args = --no-bpf-event -c 100 -P kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=100 +freq=0 diff --git a/tools/perf/tests/shell/attr/test-record-pfm-period b/tools/perf/tests/shell/attr/test-record-pfm-period new file mode 100644 index 000000000000..368f5b814094 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-pfm-period @@ -0,0 +1,9 @@ +[config] +command = record +args = --no-bpf-event -c 10000 --pfm-events=cycles:period=77777 kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_period=77777 +sample_type=7 +freq=0 diff --git a/tools/perf/tests/shell/attr/test-record-raw b/tools/perf/tests/shell/attr/test-record-raw new file mode 100644 index 000000000000..13a5f7860c78 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-raw @@ -0,0 +1,7 @@ +[config] +command = record +args = --no-bpf-event -R kill >/dev/null 2>&1 +ret = 1 + +[event:base-record] +sample_type=1415 diff --git a/tools/perf/tests/shell/attr/test-record-spe-period b/tools/perf/tests/shell/attr/test-record-spe-period new file mode 100644 index 000000000000..75f8c9cd8e3f --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-spe-period @@ -0,0 +1,12 @@ +[config] +command = record +args = --no-bpf-event -c 2 -e arm_spe_0// -- kill >/dev/null 2>&1 +ret = 1 +arch = aarch64 + +[event-10:base-record-spe] +sample_period=2 +freq=0 + +# dummy event +[event-1:base-record-spe] diff --git a/tools/perf/tests/shell/attr/test-record-spe-period-term b/tools/perf/tests/shell/attr/test-record-spe-period-term new file mode 100644 index 000000000000..8f60a4fec657 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-spe-period-term @@ -0,0 +1,12 @@ +[config] +command = record +args = --no-bpf-event -e arm_spe_0/period=3/ -- kill >/dev/null 2>&1 +ret = 1 +arch = aarch64 + +[event-10:base-record-spe] +sample_period=3 +freq=0 + +# dummy event +[event-1:base-record-spe] diff --git a/tools/perf/tests/shell/attr/test-record-spe-physical-address b/tools/perf/tests/shell/attr/test-record-spe-physical-address new file mode 100644 index 000000000000..7ebcf5012ce3 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-spe-physical-address @@ -0,0 +1,12 @@ +[config] +command = record +args = --no-bpf-event -e arm_spe_0/pa_enable=1/ -- kill >/dev/null 2>&1 +ret = 1 +arch = aarch64 + +[event-10:base-record-spe] +# 622727 is the decimal of IP|TID|TIME|CPU|IDENTIFIER|DATA_SRC|PHYS_ADDR +sample_type=622727 + +# dummy event +[event-1:base-record-spe] \ No newline at end of file diff --git a/tools/perf/tests/shell/attr/test-record-user-regs-no-sve-aarch64 b/tools/perf/tests/shell/attr/test-record-user-regs-no-sve-aarch64 new file mode 100644 index 000000000000..bed765450ca9 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-user-regs-no-sve-aarch64 @@ -0,0 +1,9 @@ +# Test that asking for VG fails if the system doesn't support SVE. This +# applies both before and after the feature was added in 6.1 +[config] +command = record +args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1 +ret = 129 +test_ret = true +arch = aarch64 +auxv = auxv["AT_HWCAP"] & 0x400000 == 0 diff --git a/tools/perf/tests/shell/attr/test-record-user-regs-old-sve-aarch64 b/tools/perf/tests/shell/attr/test-record-user-regs-old-sve-aarch64 new file mode 100644 index 000000000000..15ebfc3418e3 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-user-regs-old-sve-aarch64 @@ -0,0 +1,10 @@ +# Test that asking for VG always fails on old kernels because it was +# added in 6.1. This applies to systems that either support or don't +# support SVE. +[config] +command = record +args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1 +ret = 129 +test_ret = true +arch = aarch64 +kernel_until = 6.1 diff --git a/tools/perf/tests/shell/attr/test-record-user-regs-sve-aarch64 b/tools/perf/tests/shell/attr/test-record-user-regs-sve-aarch64 new file mode 100644 index 000000000000..a65113cd7311 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-record-user-regs-sve-aarch64 @@ -0,0 +1,14 @@ +# Test that asking for VG works if the system has SVE and after the +# feature was added in 6.1 +[config] +command = record +args = --no-bpf-event --user-regs=vg kill >/dev/null 2>&1 +ret = 1 +test_ret = true +arch = aarch64 +auxv = auxv["AT_HWCAP"] & 0x400000 == 0x400000 +kernel_since = 6.1 + +[event:base-record] +sample_type=4359 +sample_regs_user=70368744177664 diff --git a/tools/perf/tests/shell/attr/test-stat-C0 b/tools/perf/tests/shell/attr/test-stat-C0 new file mode 100644 index 000000000000..a2c76d10b2bb --- /dev/null +++ b/tools/perf/tests/shell/attr/test-stat-C0 @@ -0,0 +1,10 @@ +[config] +command = stat +args = -e cycles -C 0 kill >/dev/null 2>&1 +ret = 1 + +[event:base-stat] +# events are disabled by default when attached to cpu +disabled=1 +enable_on_exec=0 +optional=1 diff --git a/tools/perf/tests/shell/attr/test-stat-basic b/tools/perf/tests/shell/attr/test-stat-basic new file mode 100644 index 000000000000..69867d049fda --- /dev/null +++ b/tools/perf/tests/shell/attr/test-stat-basic @@ -0,0 +1,7 @@ +[config] +command = stat +args = -e cycles kill >/dev/null 2>&1 +ret = 1 + +[event:base-stat] +optional=1 diff --git a/tools/perf/tests/shell/attr/test-stat-default b/tools/perf/tests/shell/attr/test-stat-default new file mode 100644 index 000000000000..e47fb4944679 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-stat-default @@ -0,0 +1,229 @@ +[config] +command = stat +args = kill >/dev/null 2>&1 +ret = 1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK +[event1:base-stat] +fd=1 +type=1 +config=1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES +[event2:base-stat] +fd=2 +type=1 +config=3 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS +[event3:base-stat] +fd=3 +type=1 +config=4 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS +[event4:base-stat] +fd=4 +type=1 +config=2 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES +[event5:base-stat] +fd=5 +type=0 +config=0 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND +[event6:base-stat] +fd=6 +type=0 +config=7 +optional=1 +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND +[event7:base-stat] +fd=7 +type=0 +config=8 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS +[event8:base-stat] +fd=8 +type=0 +config=1 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS +[event9:base-stat] +fd=9 +type=0 +config=4 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES +[event10:base-stat] +fd=10 +type=0 +config=5 +optional=1 + +# PERF_TYPE_RAW / slots (0x400) +[event11:base-stat] +fd=11 +group_fd=-1 +type=4 +config=1024 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-retiring (0x8000) +[event12:base-stat] +fd=12 +group_fd=11 +type=4 +config=32768 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-bad-spec (0x8100) +[event13:base-stat] +fd=13 +group_fd=11 +type=4 +config=33024 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-fe-bound (0x8200) +[event14:base-stat] +fd=14 +group_fd=11 +type=4 +config=33280 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-be-bound (0x8300) +[event15:base-stat] +fd=15 +group_fd=11 +type=4 +config=33536 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) +[event16:base-stat] +fd=16 +group_fd=11 +type=4 +config=33792 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) +[event17:base-stat] +fd=17 +group_fd=11 +type=4 +config=34048 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) +[event18:base-stat] +fd=18 +group_fd=11 +type=4 +config=34304 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-mem-bound (0x8700) +[event19:base-stat] +fd=19 +group_fd=11 +type=4 +config=34560 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING +[event20:base-stat] +fd=20 +type=4 +config=4109 +optional=1 + +# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ +[event21:base-stat] +fd=21 +type=4 +config=17039629 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD +[event22:base-stat] +fd=22 +type=4 +config=60 +optional=1 + +# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY +[event23:base-stat] +fd=23 +type=4 +config=2097421 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK +[event24:base-stat] +fd=24 +type=4 +config=316 +optional=1 + +# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +[event25:base-stat] +fd=25 +type=4 +config=412 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +[event26:base-stat] +fd=26 +type=4 +config=572 +optional=1 + +# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +[event27:base-stat] +fd=27 +type=4 +config=706 +optional=1 + +# PERF_TYPE_RAW / UOPS_ISSUED.ANY +[event28:base-stat] +fd=28 +type=4 +config=270 +optional=1 diff --git a/tools/perf/tests/shell/attr/test-stat-detailed-1 b/tools/perf/tests/shell/attr/test-stat-detailed-1 new file mode 100644 index 000000000000..3d500d3e0c5c --- /dev/null +++ b/tools/perf/tests/shell/attr/test-stat-detailed-1 @@ -0,0 +1,271 @@ +[config] +command = stat +args = -d kill >/dev/null 2>&1 +ret = 1 + + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK +[event1:base-stat] +fd=1 +type=1 +config=1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES +[event2:base-stat] +fd=2 +type=1 +config=3 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS +[event3:base-stat] +fd=3 +type=1 +config=4 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS +[event4:base-stat] +fd=4 +type=1 +config=2 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES +[event5:base-stat] +fd=5 +type=0 +config=0 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND +[event6:base-stat] +fd=6 +type=0 +config=7 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND +[event7:base-stat] +fd=7 +type=0 +config=8 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS +[event8:base-stat] +fd=8 +type=0 +config=1 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS +[event9:base-stat] +fd=9 +type=0 +config=4 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES +[event10:base-stat] +fd=10 +type=0 +config=5 +optional=1 + +# PERF_TYPE_RAW / slots (0x400) +[event11:base-stat] +fd=11 +group_fd=-1 +type=4 +config=1024 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-retiring (0x8000) +[event12:base-stat] +fd=12 +group_fd=11 +type=4 +config=32768 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-bad-spec (0x8100) +[event13:base-stat] +fd=13 +group_fd=11 +type=4 +config=33024 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-fe-bound (0x8200) +[event14:base-stat] +fd=14 +group_fd=11 +type=4 +config=33280 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-be-bound (0x8300) +[event15:base-stat] +fd=15 +group_fd=11 +type=4 +config=33536 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) +[event16:base-stat] +fd=16 +group_fd=11 +type=4 +config=33792 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) +[event17:base-stat] +fd=17 +group_fd=11 +type=4 +config=34048 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) +[event18:base-stat] +fd=18 +group_fd=11 +type=4 +config=34304 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-mem-bound (0x8700) +[event19:base-stat] +fd=19 +group_fd=11 +type=4 +config=34560 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING +[event20:base-stat] +fd=20 +type=4 +config=4109 +optional=1 + +# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ +[event21:base-stat] +fd=21 +type=4 +config=17039629 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD +[event22:base-stat] +fd=22 +type=4 +config=60 +optional=1 + +# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY +[event23:base-stat] +fd=23 +type=4 +config=2097421 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK +[event24:base-stat] +fd=24 +type=4 +config=316 +optional=1 + +# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +[event25:base-stat] +fd=25 +type=4 +config=412 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +[event26:base-stat] +fd=26 +type=4 +config=572 +optional=1 + +# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +[event27:base-stat] +fd=27 +type=4 +config=706 +optional=1 + +# PERF_TYPE_RAW / UOPS_ISSUED.ANY +[event28:base-stat] +fd=28 +type=4 +config=270 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event29:base-stat] +fd=29 +type=3 +config=0 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event30:base-stat] +fd=30 +type=3 +config=65536 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event31:base-stat] +fd=31 +type=3 +config=2 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event32:base-stat] +fd=32 +type=3 +config=65538 +optional=1 diff --git a/tools/perf/tests/shell/attr/test-stat-detailed-2 b/tools/perf/tests/shell/attr/test-stat-detailed-2 new file mode 100644 index 000000000000..01777a63752f --- /dev/null +++ b/tools/perf/tests/shell/attr/test-stat-detailed-2 @@ -0,0 +1,331 @@ +[config] +command = stat +args = -dd kill >/dev/null 2>&1 +ret = 1 + + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK +[event1:base-stat] +fd=1 +type=1 +config=1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES +[event2:base-stat] +fd=2 +type=1 +config=3 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS +[event3:base-stat] +fd=3 +type=1 +config=4 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS +[event4:base-stat] +fd=4 +type=1 +config=2 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES +[event5:base-stat] +fd=5 +type=0 +config=0 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND +[event6:base-stat] +fd=6 +type=0 +config=7 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND +[event7:base-stat] +fd=7 +type=0 +config=8 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS +[event8:base-stat] +fd=8 +type=0 +config=1 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS +[event9:base-stat] +fd=9 +type=0 +config=4 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES +[event10:base-stat] +fd=10 +type=0 +config=5 +optional=1 + +# PERF_TYPE_RAW / slots (0x400) +[event11:base-stat] +fd=11 +group_fd=-1 +type=4 +config=1024 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-retiring (0x8000) +[event12:base-stat] +fd=12 +group_fd=11 +type=4 +config=32768 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-bad-spec (0x8100) +[event13:base-stat] +fd=13 +group_fd=11 +type=4 +config=33024 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-fe-bound (0x8200) +[event14:base-stat] +fd=14 +group_fd=11 +type=4 +config=33280 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-be-bound (0x8300) +[event15:base-stat] +fd=15 +group_fd=11 +type=4 +config=33536 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) +[event16:base-stat] +fd=16 +group_fd=11 +type=4 +config=33792 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) +[event17:base-stat] +fd=17 +group_fd=11 +type=4 +config=34048 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) +[event18:base-stat] +fd=18 +group_fd=11 +type=4 +config=34304 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-mem-bound (0x8700) +[event19:base-stat] +fd=19 +group_fd=11 +type=4 +config=34560 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING +[event20:base-stat] +fd=20 +type=4 +config=4109 +optional=1 + +# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ +[event21:base-stat] +fd=21 +type=4 +config=17039629 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD +[event22:base-stat] +fd=22 +type=4 +config=60 +optional=1 + +# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY +[event23:base-stat] +fd=23 +type=4 +config=2097421 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK +[event24:base-stat] +fd=24 +type=4 +config=316 +optional=1 + +# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +[event25:base-stat] +fd=25 +type=4 +config=412 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +[event26:base-stat] +fd=26 +type=4 +config=572 +optional=1 + +# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +[event27:base-stat] +fd=27 +type=4 +config=706 +optional=1 + +# PERF_TYPE_RAW / UOPS_ISSUED.ANY +[event28:base-stat] +fd=28 +type=4 +config=270 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event29:base-stat] +fd=29 +type=3 +config=0 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event30:base-stat] +fd=30 +type=3 +config=65536 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event31:base-stat] +fd=31 +type=3 +config=2 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event32:base-stat] +fd=32 +type=3 +config=65538 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1I << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event33:base-stat] +fd=33 +type=3 +config=1 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1I << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event34:base-stat] +fd=34 +type=3 +config=65537 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_DTLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event35:base-stat] +fd=35 +type=3 +config=3 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_DTLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event36:base-stat] +fd=36 +type=3 +config=65539 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_ITLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event37:base-stat] +fd=37 +type=3 +config=4 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_ITLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event38:base-stat] +fd=38 +type=3 +config=65540 +optional=1 diff --git a/tools/perf/tests/shell/attr/test-stat-detailed-3 b/tools/perf/tests/shell/attr/test-stat-detailed-3 new file mode 100644 index 000000000000..8400abd7e1e4 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-stat-detailed-3 @@ -0,0 +1,351 @@ +[config] +command = stat +args = -ddd kill >/dev/null 2>&1 +ret = 1 + + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_TASK_CLOCK +[event1:base-stat] +fd=1 +type=1 +config=1 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CONTEXT_SWITCHES +[event2:base-stat] +fd=2 +type=1 +config=3 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_CPU_MIGRATIONS +[event3:base-stat] +fd=3 +type=1 +config=4 + +# PERF_TYPE_SOFTWARE / PERF_COUNT_SW_PAGE_FAULTS +[event4:base-stat] +fd=4 +type=1 +config=2 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_CPU_CYCLES +[event5:base-stat] +fd=5 +type=0 +config=0 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_FRONTEND +[event6:base-stat] +fd=6 +type=0 +config=7 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_STALLED_CYCLES_BACKEND +[event7:base-stat] +fd=7 +type=0 +config=8 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_INSTRUCTIONS +[event8:base-stat] +fd=8 +type=0 +config=1 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_INSTRUCTIONS +[event9:base-stat] +fd=9 +type=0 +config=4 +optional=1 + +# PERF_TYPE_HARDWARE / PERF_COUNT_HW_BRANCH_MISSES +[event10:base-stat] +fd=10 +type=0 +config=5 +optional=1 + +# PERF_TYPE_RAW / slots (0x400) +[event11:base-stat] +fd=11 +group_fd=-1 +type=4 +config=1024 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-retiring (0x8000) +[event12:base-stat] +fd=12 +group_fd=11 +type=4 +config=32768 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-bad-spec (0x8100) +[event13:base-stat] +fd=13 +group_fd=11 +type=4 +config=33024 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-fe-bound (0x8200) +[event14:base-stat] +fd=14 +group_fd=11 +type=4 +config=33280 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-be-bound (0x8300) +[event15:base-stat] +fd=15 +group_fd=11 +type=4 +config=33536 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-heavy-ops (0x8400) +[event16:base-stat] +fd=16 +group_fd=11 +type=4 +config=33792 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-br-mispredict (0x8500) +[event17:base-stat] +fd=17 +group_fd=11 +type=4 +config=34048 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-fetch-lat (0x8600) +[event18:base-stat] +fd=18 +group_fd=11 +type=4 +config=34304 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / topdown-mem-bound (0x8700) +[event19:base-stat] +fd=19 +group_fd=11 +type=4 +config=34560 +disabled=0 +enable_on_exec=0 +read_format=15 +optional=1 + +# PERF_TYPE_RAW / INT_MISC.UOP_DROPPING +[event20:base-stat] +fd=20 +type=4 +config=4109 +optional=1 + +# PERF_TYPE_RAW / cpu/INT_MISC.RECOVERY_CYCLES,cmask=1,edge/ +[event21:base-stat] +fd=21 +type=4 +config=17039629 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.THREAD +[event22:base-stat] +fd=22 +type=4 +config=60 +optional=1 + +# PERF_TYPE_RAW / INT_MISC.RECOVERY_CYCLES_ANY +[event23:base-stat] +fd=23 +type=4 +config=2097421 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.REF_XCLK +[event24:base-stat] +fd=24 +type=4 +config=316 +optional=1 + +# PERF_TYPE_RAW / IDQ_UOPS_NOT_DELIVERED.CORE +[event25:base-stat] +fd=25 +type=4 +config=412 +optional=1 + +# PERF_TYPE_RAW / CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE +[event26:base-stat] +fd=26 +type=4 +config=572 +optional=1 + +# PERF_TYPE_RAW / UOPS_RETIRED.RETIRE_SLOTS +[event27:base-stat] +fd=27 +type=4 +config=706 +optional=1 + +# PERF_TYPE_RAW / UOPS_ISSUED.ANY +[event28:base-stat] +fd=28 +type=4 +config=270 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event29:base-stat] +fd=29 +type=3 +config=0 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event30:base-stat] +fd=30 +type=3 +config=65536 +optional=1 + +# PERF_TYPE_HW_CACHE / +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event31:base-stat] +fd=31 +type=3 +config=2 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_LL << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event32:base-stat] +fd=32 +type=3 +config=65538 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1I << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event33:base-stat] +fd=33 +type=3 +config=1 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1I << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event34:base-stat] +fd=34 +type=3 +config=65537 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_DTLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event35:base-stat] +fd=35 +type=3 +config=3 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_DTLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event36:base-stat] +fd=36 +type=3 +config=65539 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_ITLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event37:base-stat] +fd=37 +type=3 +config=4 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_ITLB << 0 | +# (PERF_COUNT_HW_CACHE_OP_READ << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event38:base-stat] +fd=38 +type=3 +config=65540 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) +[event39:base-stat] +fd=39 +type=3 +config=512 +optional=1 + +# PERF_TYPE_HW_CACHE, +# PERF_COUNT_HW_CACHE_L1D << 0 | +# (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | +# (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) +[event40:base-stat] +fd=40 +type=3 +config=66048 +optional=1 diff --git a/tools/perf/tests/shell/attr/test-stat-group1 b/tools/perf/tests/shell/attr/test-stat-group1 new file mode 100644 index 000000000000..1746751123dc --- /dev/null +++ b/tools/perf/tests/shell/attr/test-stat-group1 @@ -0,0 +1,17 @@ +[config] +command = stat +args = -e '{cycles,instructions}' kill >/dev/null 2>&1 +ret = 1 + +[event-1:base-stat] +fd=1 +group_fd=-1 +read_format=3|15 + +[event-2:base-stat] +fd=2 +group_fd=1 +config=1 +disabled=0 +enable_on_exec=0 +read_format=3|15 diff --git a/tools/perf/tests/shell/attr/test-stat-no-inherit b/tools/perf/tests/shell/attr/test-stat-no-inherit new file mode 100644 index 000000000000..924fbb9300d1 --- /dev/null +++ b/tools/perf/tests/shell/attr/test-stat-no-inherit @@ -0,0 +1,8 @@ +[config] +command = stat +args = -i -e cycles kill >/dev/null 2>&1 +ret = 1 + +[event:base-stat] +inherit=0 +optional=1 diff --git a/tools/perf/tests/shell/lib/attr.py b/tools/perf/tests/shell/lib/attr.py new file mode 100644 index 000000000000..3db9a7d78715 --- /dev/null +++ b/tools/perf/tests/shell/lib/attr.py @@ -0,0 +1,476 @@ +# SPDX-License-Identifier: GPL-2.0 + +from __future__ import print_function + +import os +import sys +import glob +import optparse +import platform +import tempfile +import logging +import re +import shutil +import subprocess + +try: + import configparser +except ImportError: + import ConfigParser as configparser + +def data_equal(a, b): + # Allow multiple values in assignment separated by '|' + a_list = a.split('|') + b_list = b.split('|') + + for a_item in a_list: + for b_item in b_list: + if (a_item == b_item): + return True + elif (a_item == '*') or (b_item == '*'): + return True + + return False + +class Fail(Exception): + def __init__(self, test, msg): + self.msg = msg + self.test = test + def getMsg(self): + return '\'%s\' - %s' % (self.test.path, self.msg) + +class Notest(Exception): + def __init__(self, test, arch): + self.arch = arch + self.test = test + def getMsg(self): + return '[%s] \'%s\'' % (self.arch, self.test.path) + +class Unsup(Exception): + def __init__(self, test): + self.test = test + def getMsg(self): + return '\'%s\'' % self.test.path + +class Event(dict): + terms = [ + 'cpu', + 'flags', + 'type', + 'size', + 'config', + 'sample_period', + 'sample_type', + 'read_format', + 'disabled', + 'inherit', + 'pinned', + 'exclusive', + 'exclude_user', + 'exclude_kernel', + 'exclude_hv', + 'exclude_idle', + 'mmap', + 'comm', + 'freq', + 'inherit_stat', + 'enable_on_exec', + 'task', + 'watermark', + 'precise_ip', + 'mmap_data', + 'sample_id_all', + 'exclude_host', + 'exclude_guest', + 'exclude_callchain_kernel', + 'exclude_callchain_user', + 'wakeup_events', + 'bp_type', + 'config1', + 'config2', + 'branch_sample_type', + 'sample_regs_user', + 'sample_stack_user', + ] + + def add(self, data): + for key, val in data: + log.debug(" %s = %s" % (key, val)) + self[key] = val + + def __init__(self, name, data, base): + log.debug(" Event %s" % name); + self.name = name; + self.group = '' + self.add(base) + self.add(data) + + def equal(self, other): + for t in Event.terms: + log.debug(" [%s] %s %s" % (t, self[t], other[t])); + if t not in self or t not in other: + return False + if not data_equal(self[t], other[t]): + return False + return True + + def optional(self): + if 'optional' in self and self['optional'] == '1': + return True + return False + + def diff(self, other): + for t in Event.terms: + if t not in self or t not in other: + continue + if not data_equal(self[t], other[t]): + log.warning("expected %s=%s, got %s" % (t, self[t], other[t])) + +def parse_version(version): + if not version: + return None + return [int(v) for v in version.split(".")[0:2]] + +# Test file description needs to have following sections: +# [config] +# - just single instance in file +# - needs to specify: +# 'command' - perf command name +# 'args' - special command arguments +# 'ret' - Skip test if Perf doesn't exit with this value (0 by default) +# 'test_ret'- If set to 'true', fail test instead of skipping for 'ret' argument +# 'arch' - architecture specific test (optional) +# comma separated list, ! at the beginning +# negates it. +# 'auxv' - Truthy statement that is evaled in the scope of the auxv map. When false, +# the test is skipped. For example 'auxv["AT_HWCAP"] == 10'. (optional) +# 'kernel_since' - Inclusive kernel version from which the test will start running. Only the +# first two values are supported, for example "6.1" (optional) +# 'kernel_until' - Exclusive kernel version from which the test will stop running. (optional) +# [eventX:base] +# - one or multiple instances in file +# - expected values assignments +class Test(object): + def __init__(self, path, options): + parser = configparser.ConfigParser() + parser.read(path) + + log.warning("running '%s'" % path) + + self.path = path + self.test_dir = options.test_dir + self.perf = options.perf + self.command = parser.get('config', 'command') + self.args = parser.get('config', 'args') + + try: + self.ret = parser.get('config', 'ret') + except: + self.ret = 0 + + self.test_ret = parser.getboolean('config', 'test_ret', fallback=False) + + try: + self.arch = parser.get('config', 'arch') + log.warning("test limitation '%s'" % self.arch) + except: + self.arch = '' + + self.auxv = parser.get('config', 'auxv', fallback=None) + self.kernel_since = parse_version(parser.get('config', 'kernel_since', fallback=None)) + self.kernel_until = parse_version(parser.get('config', 'kernel_until', fallback=None)) + self.expect = {} + self.result = {} + log.debug(" loading expected events"); + self.load_events(path, self.expect) + + def is_event(self, name): + if name.find("event") == -1: + return False + else: + return True + + def skip_test_kernel_since(self): + if not self.kernel_since: + return False + return not self.kernel_since <= parse_version(platform.release()) + + def skip_test_kernel_until(self): + if not self.kernel_until: + return False + return not parse_version(platform.release()) < self.kernel_until + + def skip_test_auxv(self): + def new_auxv(a, pattern): + items = list(filter(None, pattern.split(a))) + # AT_HWCAP is hex but doesn't have a prefix, so special case it + if items[0] == "AT_HWCAP": + value = int(items[-1], 16) + else: + try: + value = int(items[-1], 0) + except: + value = items[-1] + return (items[0], value) + + if not self.auxv: + return False + auxv = subprocess.check_output("LD_SHOW_AUXV=1 sleep 0", shell=True) \ + .decode(sys.stdout.encoding) + pattern = re.compile(r"[: ]+") + auxv = dict([new_auxv(a, pattern) for a in auxv.splitlines()]) + return not eval(self.auxv) + + def skip_test_arch(self, myarch): + # If architecture not set always run test + if self.arch == '': + # log.warning("test for arch %s is ok" % myarch) + return False + + # Allow multiple values in assignment separated by ',' + arch_list = self.arch.split(',') + + # Handle negated list such as !s390x,ppc + if arch_list[0][0] == '!': + arch_list[0] = arch_list[0][1:] + log.warning("excluded architecture list %s" % arch_list) + for arch_item in arch_list: + # log.warning("test for %s arch is %s" % (arch_item, myarch)) + if arch_item == myarch: + return True + return False + + for arch_item in arch_list: + # log.warning("test for architecture '%s' current '%s'" % (arch_item, myarch)) + if arch_item == myarch: + return False + return True + + def restore_sample_rate(self, value=10000): + try: + # Check value of sample_rate + with open("/proc/sys/kernel/perf_event_max_sample_rate", "r") as fIn: + curr_value = fIn.readline() + # If too low restore to reasonable value + if not curr_value or int(curr_value) < int(value): + with open("/proc/sys/kernel/perf_event_max_sample_rate", "w") as fOut: + fOut.write(str(value)) + + except IOError as e: + log.warning("couldn't restore sample_rate value: I/O error %s" % e) + except ValueError as e: + log.warning("couldn't restore sample_rate value: Value error %s" % e) + except TypeError as e: + log.warning("couldn't restore sample_rate value: Type error %s" % e) + + def load_events(self, path, events): + parser_event = configparser.ConfigParser() + parser_event.read(path) + + # The event record section header contains 'event' word, + # optionaly followed by ':' allowing to load 'parent + # event' first as a base + for section in filter(self.is_event, parser_event.sections()): + + parser_items = parser_event.items(section); + base_items = {} + + # Read parent event if there's any + if (':' in section): + base = section[section.index(':') + 1:] + parser_base = configparser.ConfigParser() + parser_base.read(self.test_dir + '/' + base) + base_items = parser_base.items('event') + + e = Event(section, parser_items, base_items) + events[section] = e + + def run_cmd(self, tempdir): + junk1, junk2, junk3, junk4, myarch = (os.uname()) + + if self.skip_test_arch(myarch): + raise Notest(self, myarch) + + if self.skip_test_auxv(): + raise Notest(self, "auxv skip") + + if self.skip_test_kernel_since(): + raise Notest(self, "old kernel skip") + + if self.skip_test_kernel_until(): + raise Notest(self, "new kernel skip") + + self.restore_sample_rate() + cmd = "PERF_TEST_ATTR=%s %s %s -o %s/perf.data %s" % (tempdir, + self.perf, self.command, tempdir, self.args) + ret = os.WEXITSTATUS(os.system(cmd)) + + log.info(" '%s' ret '%s', expected '%s'" % (cmd, str(ret), str(self.ret))) + + if not data_equal(str(ret), str(self.ret)): + if self.test_ret: + raise Fail(self, "Perf exit code failure") + else: + raise Unsup(self) + + def compare(self, expect, result): + match = {} + + log.debug(" compare"); + + # For each expected event find all matching + # events in result. Fail if there's not any. + for exp_name, exp_event in expect.items(): + exp_list = [] + res_event = {} + log.debug(" matching [%s]" % exp_name) + for res_name, res_event in result.items(): + log.debug(" to [%s]" % res_name) + if (exp_event.equal(res_event)): + exp_list.append(res_name) + log.debug(" ->OK") + else: + log.debug(" ->FAIL"); + + log.debug(" match: [%s] matches %s" % (exp_name, str(exp_list))) + + # we did not any matching event - fail + if not exp_list: + if exp_event.optional(): + log.debug(" %s does not match, but is optional" % exp_name) + else: + if not res_event: + log.debug(" res_event is empty"); + else: + exp_event.diff(res_event) + raise Fail(self, 'match failure'); + + match[exp_name] = exp_list + + # For each defined group in the expected events + # check we match the same group in the result. + for exp_name, exp_event in expect.items(): + group = exp_event.group + + if (group == ''): + continue + + for res_name in match[exp_name]: + res_group = result[res_name].group + if res_group not in match[group]: + raise Fail(self, 'group failure') + + log.debug(" group: [%s] matches group leader %s" % + (exp_name, str(match[group]))) + + log.debug(" matched") + + def resolve_groups(self, events): + for name, event in events.items(): + group_fd = event['group_fd']; + if group_fd == '-1': + continue; + + for iname, ievent in events.items(): + if (ievent['fd'] == group_fd): + event.group = iname + log.debug('[%s] has group leader [%s]' % (name, iname)) + break; + + def run(self): + tempdir = tempfile.mkdtemp(); + + try: + # run the test script + self.run_cmd(tempdir); + + # load events expectation for the test + log.debug(" loading result events"); + for f in glob.glob(tempdir + '/event*'): + self.load_events(f, self.result); + + # resolve group_fd to event names + self.resolve_groups(self.expect); + self.resolve_groups(self.result); + + # do the expectation - results matching - both ways + self.compare(self.expect, self.result) + self.compare(self.result, self.expect) + + finally: + # cleanup + shutil.rmtree(tempdir) + + +def run_tests(options): + for f in glob.glob(options.test_dir + '/' + options.test): + try: + Test(f, options).run() + except Unsup as obj: + log.warning("unsupp %s" % obj.getMsg()) + except Notest as obj: + log.warning("skipped %s" % obj.getMsg()) + +def setup_log(verbose): + global log + level = logging.CRITICAL + + if verbose == 1: + level = logging.WARNING + if verbose == 2: + level = logging.INFO + if verbose >= 3: + level = logging.DEBUG + + log = logging.getLogger('test') + log.setLevel(level) + ch = logging.StreamHandler() + ch.setLevel(level) + formatter = logging.Formatter('%(message)s') + ch.setFormatter(formatter) + log.addHandler(ch) + +USAGE = '''%s [OPTIONS] + -d dir # tests dir + -p path # perf binary + -t test # single test + -v # verbose level +''' % sys.argv[0] + +def main(): + parser = optparse.OptionParser(usage=USAGE) + + parser.add_option("-t", "--test", + action="store", type="string", dest="test") + parser.add_option("-d", "--test-dir", + action="store", type="string", dest="test_dir") + parser.add_option("-p", "--perf", + action="store", type="string", dest="perf") + parser.add_option("-v", "--verbose", + default=0, action="count", dest="verbose") + + options, args = parser.parse_args() + if args: + parser.error('FAILED wrong arguments %s' % ' '.join(args)) + return -1 + + setup_log(options.verbose) + + if not options.test_dir: + print('FAILED no -d option specified') + sys.exit(-1) + + if not options.test: + options.test = 'test*' + + try: + run_tests(options) + + except Fail as obj: + print("FAILED %s" % obj.getMsg()) + sys.exit(-1) + + sys.exit(0) + +if __name__ == '__main__': + main() -- cgit v1.2.3 From 0f59a6c9c421a44e652353e3ec15cf2425b904fe Mon Sep 17 00:00:00 2001 From: Tomas Glozar Date: Thu, 17 Oct 2024 16:09:09 +0200 Subject: tools/build: Add libcpupower dependency detection Add the ability to detect the presence of libcpupower on a system to the Makefiles in tools/build. Link: https://lore.kernel.org/20241017140914.3200454-2-tglozar@redhat.com Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/build/Makefile.feature | 1 + tools/build/feature/Makefile | 4 ++++ tools/build/feature/test-libcpupower.c | 8 ++++++++ 3 files changed, 13 insertions(+) create mode 100644 tools/build/feature/test-libcpupower.c (limited to 'tools') diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index ffd117135094..2ebfb826dcea 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -53,6 +53,7 @@ FEATURE_TESTS_BASIC := \ libslang-include-subdir \ libtraceevent \ libtracefs \ + libcpupower \ libcrypto \ libunwind \ pthread-attr-setaffinity-np \ diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 5938cf799dc6..6ef3e1ca583e 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -38,6 +38,7 @@ FILES= \ test-libslang.bin \ test-libslang-include-subdir.bin \ test-libtraceevent.bin \ + test-libcpupower.bin \ test-libtracefs.bin \ test-libcrypto.bin \ test-libunwind.bin \ @@ -245,6 +246,9 @@ $(OUTPUT)test-libslang-include-subdir.bin: $(OUTPUT)test-libtraceevent.bin: $(BUILD) -ltraceevent +$(OUTPUT)test-libcpupower.bin: + $(BUILD) -lcpupower + $(OUTPUT)test-libtracefs.bin: $(BUILD) $(shell $(PKG_CONFIG) --cflags libtracefs 2>/dev/null) -ltracefs diff --git a/tools/build/feature/test-libcpupower.c b/tools/build/feature/test-libcpupower.c new file mode 100644 index 000000000000..a346aa332a71 --- /dev/null +++ b/tools/build/feature/test-libcpupower.c @@ -0,0 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 +#include + +int main(void) +{ + int rv = cpuidle_state_count(0); + return rv; +} -- cgit v1.2.3 From e2b48b226b84848972c4fde6066ed9ff1254463f Mon Sep 17 00:00:00 2001 From: Tomas Glozar Date: Thu, 17 Oct 2024 16:09:10 +0200 Subject: rtla: Add optional dependency on libcpupower If libcpupower is present, set HAVE_LIBCPUPOWER_SUPPORT macro to allow features depending on libcpupower in rtla. Link: https://lore.kernel.org/20241017140914.3200454-3-tglozar@redhat.com Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/Makefile | 2 ++ tools/tracing/rtla/Makefile.config | 10 ++++++++++ 2 files changed, 12 insertions(+) (limited to 'tools') diff --git a/tools/tracing/rtla/Makefile b/tools/tracing/rtla/Makefile index b5878be36125..a6a7dee16622 100644 --- a/tools/tracing/rtla/Makefile +++ b/tools/tracing/rtla/Makefile @@ -32,8 +32,10 @@ DOCSRC := ../../../Documentation/tools/rtla/ FEATURE_TESTS := libtraceevent FEATURE_TESTS += libtracefs +FEATURE_TESTS += libcpupower FEATURE_DISPLAY := libtraceevent FEATURE_DISPLAY += libtracefs +FEATURE_DISPLAY += libcpupower ifeq ($(V),1) Q = diff --git a/tools/tracing/rtla/Makefile.config b/tools/tracing/rtla/Makefile.config index 5f8c286712d4..92a6e12e42d3 100644 --- a/tools/tracing/rtla/Makefile.config +++ b/tools/tracing/rtla/Makefile.config @@ -43,6 +43,16 @@ else $(info libtracefs is missing. Please install libtracefs-dev/libtracefs-devel) endif +$(call feature_check,libcpupower) +ifeq ($(feature-libcpupower), 1) + $(call detected,CONFIG_LIBCPUPOWER) + CFLAGS += -DHAVE_LIBCPUPOWER_SUPPORT + EXTLIBS += -lcpupower +else + $(info libcpupower is missing, building without --deepest-idle-state support.) + $(info Please install libcpupower-dev/kernel-tools-libs-devel) +endif + ifeq ($(STOP_ERROR),1) $(error Please, check the errors above.) endif -- cgit v1.2.3 From 083d29d3784319e9e9fab3ac02683a7b26ae3480 Mon Sep 17 00:00:00 2001 From: Tomas Glozar Date: Thu, 17 Oct 2024 16:09:11 +0200 Subject: rtla/utils: Add idle state disabling via libcpupower Add functions to utils.c to disable idle states through functions of libcpupower. This will serve as the basis for disabling idle states per cpu when running timerlat. Link: https://lore.kernel.org/20241017140914.3200454-4-tglozar@redhat.com Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/utils.c | 150 +++++++++++++++++++++++++++++++++++++++++ tools/tracing/rtla/src/utils.h | 13 ++++ 2 files changed, 163 insertions(+) (limited to 'tools') diff --git a/tools/tracing/rtla/src/utils.c b/tools/tracing/rtla/src/utils.c index 6fae234aaf36..4995d35cf3ec 100644 --- a/tools/tracing/rtla/src/utils.c +++ b/tools/tracing/rtla/src/utils.c @@ -4,6 +4,9 @@ */ #define _GNU_SOURCE +#ifdef HAVE_LIBCPUPOWER_SUPPORT +#include +#endif /* HAVE_LIBCPUPOWER_SUPPORT */ #include #include #include @@ -515,6 +518,153 @@ int set_cpu_dma_latency(int32_t latency) return fd; } +#ifdef HAVE_LIBCPUPOWER_SUPPORT +static unsigned int **saved_cpu_idle_disable_state; +static size_t saved_cpu_idle_disable_state_alloc_ctr; + +/* + * save_cpu_idle_state_disable - save disable for all idle states of a cpu + * + * Saves the current disable of all idle states of a cpu, to be subsequently + * restored via restore_cpu_idle_disable_state. + * + * Return: idle state count on success, negative on error + */ +int save_cpu_idle_disable_state(unsigned int cpu) +{ + unsigned int nr_states; + unsigned int state; + int disabled; + int nr_cpus; + + nr_states = cpuidle_state_count(cpu); + + if (nr_states == 0) + return 0; + + if (saved_cpu_idle_disable_state == NULL) { + nr_cpus = sysconf(_SC_NPROCESSORS_CONF); + saved_cpu_idle_disable_state = calloc(nr_cpus, sizeof(unsigned int *)); + if (!saved_cpu_idle_disable_state) + return -1; + } + + saved_cpu_idle_disable_state[cpu] = calloc(nr_states, sizeof(unsigned int)); + if (!saved_cpu_idle_disable_state[cpu]) + return -1; + saved_cpu_idle_disable_state_alloc_ctr++; + + for (state = 0; state < nr_states; state++) { + disabled = cpuidle_is_state_disabled(cpu, state); + if (disabled < 0) + return disabled; + saved_cpu_idle_disable_state[cpu][state] = disabled; + } + + return nr_states; +} + +/* + * restore_cpu_idle_disable_state - restore disable for all idle states of a cpu + * + * Restores the current disable state of all idle states of a cpu that was + * previously saved by save_cpu_idle_disable_state. + * + * Return: idle state count on success, negative on error + */ +int restore_cpu_idle_disable_state(unsigned int cpu) +{ + unsigned int nr_states; + unsigned int state; + int disabled; + int result; + + nr_states = cpuidle_state_count(cpu); + + if (nr_states == 0) + return 0; + + if (!saved_cpu_idle_disable_state) + return -1; + + for (state = 0; state < nr_states; state++) { + if (!saved_cpu_idle_disable_state[cpu]) + return -1; + disabled = saved_cpu_idle_disable_state[cpu][state]; + result = cpuidle_state_disable(cpu, state, disabled); + if (result < 0) + return result; + } + + free(saved_cpu_idle_disable_state[cpu]); + saved_cpu_idle_disable_state[cpu] = NULL; + saved_cpu_idle_disable_state_alloc_ctr--; + if (saved_cpu_idle_disable_state_alloc_ctr == 0) { + free(saved_cpu_idle_disable_state); + saved_cpu_idle_disable_state = NULL; + } + + return nr_states; +} + +/* + * free_cpu_idle_disable_states - free saved idle state disable for all cpus + * + * Frees the memory used for storing cpu idle state disable for all cpus + * and states. + * + * Normally, the memory is freed automatically in + * restore_cpu_idle_disable_state; this is mostly for cleaning up after an + * error. + */ +void free_cpu_idle_disable_states(void) +{ + int cpu; + int nr_cpus; + + if (!saved_cpu_idle_disable_state) + return; + + nr_cpus = sysconf(_SC_NPROCESSORS_CONF); + + for (cpu = 0; cpu < nr_cpus; cpu++) { + free(saved_cpu_idle_disable_state[cpu]); + saved_cpu_idle_disable_state[cpu] = NULL; + } + + free(saved_cpu_idle_disable_state); + saved_cpu_idle_disable_state = NULL; +} + +/* + * set_deepest_cpu_idle_state - limit idle state of cpu + * + * Disables all idle states deeper than the one given in + * deepest_state (assuming states with higher number are deeper). + * + * This is used to reduce the exit from idle latency. Unlike + * set_cpu_dma_latency, it can disable idle states per cpu. + * + * Return: idle state count on success, negative on error + */ +int set_deepest_cpu_idle_state(unsigned int cpu, unsigned int deepest_state) +{ + unsigned int nr_states; + unsigned int state; + int result; + + nr_states = cpuidle_state_count(cpu); + + for (state = deepest_state + 1; state < nr_states; state++) { + result = cpuidle_state_disable(cpu, state, 1); + if (result < 0) + return result; + } + + return nr_states; +} +#endif /* HAVE_LIBCPUPOWER_SUPPORT */ + #define _STR(x) #x #define STR(x) _STR(x) diff --git a/tools/tracing/rtla/src/utils.h b/tools/tracing/rtla/src/utils.h index 99c9cf81bcd0..101d4799a009 100644 --- a/tools/tracing/rtla/src/utils.h +++ b/tools/tracing/rtla/src/utils.h @@ -66,6 +66,19 @@ int set_comm_sched_attr(const char *comm_prefix, struct sched_attr *attr); int set_comm_cgroup(const char *comm_prefix, const char *cgroup); int set_pid_cgroup(pid_t pid, const char *cgroup); int set_cpu_dma_latency(int32_t latency); +#ifdef HAVE_LIBCPUPOWER_SUPPORT +int save_cpu_idle_disable_state(unsigned int cpu); +int restore_cpu_idle_disable_state(unsigned int cpu); +void free_cpu_idle_disable_states(void); +int set_deepest_cpu_idle_state(unsigned int cpu, unsigned int state); +static inline int have_libcpupower_support(void) { return 1; } +#else +static inline int save_cpu_idle_disable_state(unsigned int cpu) { return -1; } +static inline int restore_cpu_idle_disable_state(unsigned int cpu) { return -1; } +static inline void free_cpu_idle_disable_states(void) { } +static inline int set_deepest_cpu_idle_state(unsigned int cpu, unsigned int state) { return -1; } +static inline int have_libcpupower_support(void) { return 0; } +#endif /* HAVE_LIBCPUPOWER_SUPPORT */ int auto_house_keeping(cpu_set_t *monitored_cpus); #define ns_to_usf(x) (((double)x/1000)) -- cgit v1.2.3 From 549b92c94c7e6db12842c5d64c036e6613dbd902 Mon Sep 17 00:00:00 2001 From: Tomas Glozar Date: Thu, 17 Oct 2024 16:09:12 +0200 Subject: rtla/timerlat: Add --deepest-idle-state for top Add option to limit deepest idle state on CPUs where timerlat is running for the duration of the workload. Link: https://lore.kernel.org/20241017140914.3200454-5-tglozar@redhat.com Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/timerlat_top.c | 42 ++++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c index 7fb85c8ee3bc..fca0da3caa87 100644 --- a/tools/tracing/rtla/src/timerlat_top.c +++ b/tools/tracing/rtla/src/timerlat_top.c @@ -48,6 +48,7 @@ struct timerlat_top_params { int pretty_output; int warmup; int buffer_size; + int deepest_idle_state; cpu_set_t hk_cpu_set; struct sched_attr sched_param; struct trace_events *events; @@ -447,7 +448,7 @@ static void timerlat_top_usage(char *usage) "", " usage: rtla timerlat [top] [-h] [-q] [-a us] [-d s] [-D] [-n] [-p us] [-i us] [-T us] [-s us] \\", " [[-t[file]] [-e sys[:event]] [--filter ] [--trigger ] [-c cpu-list] [-H cpu-list]\\", - " [-P priority] [--dma-latency us] [--aa-only us] [-C[=cgroup_name]] [-u|-k] [--warm-up s]", + " [-P priority] [--dma-latency us] [--aa-only us] [-C[=cgroup_name]] [-u|-k] [--warm-up s] [--deepest-idle-state n]", "", " -h/--help: print this menu", " -a/--auto: set automatic trace mode, stopping the session if argument in us latency is hit", @@ -481,6 +482,7 @@ static void timerlat_top_usage(char *usage) " -U/--user-load: enable timerlat for user-defined user-space workload", " --warm-up s: let the workload run for s seconds before collecting data", " --trace-buffer-size kB: set the per-cpu trace buffer size in kB", + " --deepest-idle-state n: only go down to idle state n on cpus used by timerlat to reduce exit from idle latency", NULL, }; @@ -518,6 +520,9 @@ static struct timerlat_top_params /* disabled by default */ params->dma_latency = -1; + /* disabled by default */ + params->deepest_idle_state = -2; + /* display data in microseconds */ params->output_divisor = 1000; @@ -550,6 +555,7 @@ static struct timerlat_top_params {"aa-only", required_argument, 0, '5'}, {"warm-up", required_argument, 0, '6'}, {"trace-buffer-size", required_argument, 0, '7'}, + {"deepest-idle-state", required_argument, 0, '8'}, {0, 0, 0, 0} }; @@ -726,6 +732,9 @@ static struct timerlat_top_params case '7': params->buffer_size = get_llong_from_str(optarg); break; + case '8': + params->deepest_idle_state = get_llong_from_str(optarg); + break; default: timerlat_top_usage("Invalid option"); } @@ -922,6 +931,7 @@ int timerlat_top_main(int argc, char *argv[]) int return_value = 1; char *max_lat; int retval; + int nr_cpus, i; params = timerlat_top_parse_args(argc, argv); if (!params) @@ -971,6 +981,28 @@ int timerlat_top_main(int argc, char *argv[]) } } + if (params->deepest_idle_state >= -1) { + if (!have_libcpupower_support()) { + err_msg("rtla built without libcpupower, --deepest-idle-state is not supported\n"); + goto out_free; + } + + nr_cpus = sysconf(_SC_NPROCESSORS_CONF); + + for (i = 0; i < nr_cpus; i++) { + if (params->cpus && !CPU_ISSET(i, ¶ms->monitored_cpus)) + continue; + if (save_cpu_idle_disable_state(i) < 0) { + err_msg("Could not save cpu idle state.\n"); + goto out_free; + } + if (set_deepest_cpu_idle_state(i, params->deepest_idle_state) < 0) { + err_msg("Could not set deepest cpu idle state.\n"); + goto out_free; + } + } + } + if (params->trace_output) { record = osnoise_init_trace_tool("timerlat"); if (!record) { @@ -1125,6 +1157,13 @@ out_top: timerlat_aa_destroy(); if (dma_latency_fd >= 0) close(dma_latency_fd); + if (params->deepest_idle_state >= -1) { + for (i = 0; i < nr_cpus; i++) { + if (params->cpus && !CPU_ISSET(i, ¶ms->monitored_cpus)) + continue; + restore_cpu_idle_disable_state(i); + } + } trace_events_destroy(&record->trace, params->events); params->events = NULL; out_free: @@ -1134,6 +1173,7 @@ out_free: osnoise_destroy_tool(record); osnoise_destroy_tool(top); free(params); + free_cpu_idle_disable_states(); out_exit: exit(return_value); } -- cgit v1.2.3 From cfbfbfc96f6d6947605ed905d73b05feaac78181 Mon Sep 17 00:00:00 2001 From: Tomas Glozar Date: Thu, 17 Oct 2024 16:09:13 +0200 Subject: rtla/timerlat: Add --deepest-idle-state for hist Support limiting deepest idle state also for timerlat-hist. Link: https://lore.kernel.org/20241017140914.3200454-6-tglozar@redhat.com Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/src/timerlat_hist.c | 42 +++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c index d49c8f0855fe..01dd337da13a 100644 --- a/tools/tracing/rtla/src/timerlat_hist.c +++ b/tools/tracing/rtla/src/timerlat_hist.c @@ -55,6 +55,7 @@ struct timerlat_hist_params { int entries; int warmup; int buffer_size; + int deepest_idle_state; }; struct timerlat_hist_cpu { @@ -655,7 +656,7 @@ static void timerlat_hist_usage(char *usage) " [-t[file]] [-e sys[:event]] [--filter ] [--trigger ] [-c cpu-list] [-H cpu-list]\\", " [-P priority] [-E N] [-b N] [--no-irq] [--no-thread] [--no-header] [--no-summary] \\", " [--no-index] [--with-zeros] [--dma-latency us] [-C[=cgroup_name]] [--no-aa] [--dump-task] [-u|-k]", - " [--warm-up s]", + " [--warm-up s] [--deepest-idle-state n]", "", " -h/--help: print this menu", " -a/--auto: set automatic trace mode, stopping the session if argument in us latency is hit", @@ -695,6 +696,7 @@ static void timerlat_hist_usage(char *usage) " -U/--user-load: enable timerlat for user-defined user-space workload", " --warm-up s: let the workload run for s seconds before collecting data", " --trace-buffer-size kB: set the per-cpu trace buffer size in kB", + " --deepest-idle-state n: only go down to idle state n on cpus used by timerlat to reduce exit from idle latency", NULL, }; @@ -732,6 +734,9 @@ static struct timerlat_hist_params /* disabled by default */ params->dma_latency = -1; + /* disabled by default */ + params->deepest_idle_state = -2; + /* display data in microseconds */ params->output_divisor = 1000; params->bucket_size = 1; @@ -772,6 +777,7 @@ static struct timerlat_hist_params {"dump-task", no_argument, 0, '\1'}, {"warm-up", required_argument, 0, '\2'}, {"trace-buffer-size", required_argument, 0, '\3'}, + {"deepest-idle-state", required_argument, 0, '\4'}, {0, 0, 0, 0} }; @@ -960,6 +966,9 @@ static struct timerlat_hist_params case '\3': params->buffer_size = get_llong_from_str(optarg); break; + case '\4': + params->deepest_idle_state = get_llong_from_str(optarg); + break; default: timerlat_hist_usage("Invalid option"); } @@ -1152,6 +1161,7 @@ int timerlat_hist_main(int argc, char *argv[]) int return_value = 1; pthread_t timerlat_u; int retval; + int nr_cpus, i; params = timerlat_hist_parse_args(argc, argv); if (!params) @@ -1201,6 +1211,28 @@ int timerlat_hist_main(int argc, char *argv[]) } } + if (params->deepest_idle_state >= -1) { + if (!have_libcpupower_support()) { + err_msg("rtla built without libcpupower, --deepest-idle-state is not supported\n"); + goto out_free; + } + + nr_cpus = sysconf(_SC_NPROCESSORS_CONF); + + for (i = 0; i < nr_cpus; i++) { + if (params->cpus && !CPU_ISSET(i, ¶ms->monitored_cpus)) + continue; + if (save_cpu_idle_disable_state(i) < 0) { + err_msg("Could not save cpu idle state.\n"); + goto out_free; + } + if (set_deepest_cpu_idle_state(i, params->deepest_idle_state) < 0) { + err_msg("Could not set deepest cpu idle state.\n"); + goto out_free; + } + } + } + if (params->trace_output) { record = osnoise_init_trace_tool("timerlat"); if (!record) { @@ -1332,6 +1364,13 @@ out_hist: timerlat_aa_destroy(); if (dma_latency_fd >= 0) close(dma_latency_fd); + if (params->deepest_idle_state >= -1) { + for (i = 0; i < nr_cpus; i++) { + if (params->cpus && !CPU_ISSET(i, ¶ms->monitored_cpus)) + continue; + restore_cpu_idle_disable_state(i); + } + } trace_events_destroy(&record->trace, params->events); params->events = NULL; out_free: @@ -1340,6 +1379,7 @@ out_free: osnoise_destroy_tool(record); osnoise_destroy_tool(tool); free(params); + free_cpu_idle_disable_states(); out_exit: exit(return_value); } -- cgit v1.2.3 From 13216486e3ede30d6910a22e0e15988b7016366b Mon Sep 17 00:00:00 2001 From: Tomas Glozar Date: Thu, 17 Oct 2024 16:09:14 +0200 Subject: rtla: Documentation: Mention --deepest-idle-state Add --deepest-idle-state to manpage and mention libcpupower dependency in README.txt. Link: https://lore.kernel.org/20241017140914.3200454-7-tglozar@redhat.com Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) --- tools/tracing/rtla/README.txt | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/tracing/rtla/README.txt b/tools/tracing/rtla/README.txt index 4af3fd40f171..dd5621038c55 100644 --- a/tools/tracing/rtla/README.txt +++ b/tools/tracing/rtla/README.txt @@ -11,6 +11,7 @@ RTLA depends on the following libraries and tools: - libtracefs - libtraceevent + - libcpupower (optional, for --deepest-idle-state) It also depends on python3-docutils to compile man pages. @@ -26,6 +27,9 @@ For development, we suggest the following steps for compiling rtla: $ make $ sudo make install $ cd .. + $ cd $libcpupower_src + $ make + $ sudo make install $ cd $rtla_src $ make $ sudo make install -- cgit v1.2.3 From ed1cb76ebdeb88cf0603b9cb543f43f09ab704a1 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Thu, 3 Oct 2024 17:31:10 -0700 Subject: objtool: Detect non-relocated text references When kernel IBT is enabled, objtool detects all text references in order to determine which functions can be indirectly branched to. In text, such references look like one of the following: mov $0x0,%rax R_X86_64_32S .init.text+0x7e0a0 lea 0x0(%rip),%rax R_X86_64_PC32 autoremove_wake_function-0x4 Either way the function pointer is denoted by a relocation, so objtool just reads that. However there are some "lea xxx(%rip)" cases which don't use relocations because they're referencing code in the same translation unit. Objtool doesn't have visibility to those. The only currently known instances of that are a few hand-coded asm text references which don't actually need ENDBR. So it's not actually a problem at the moment. However if we enable -fpie, the compiler would start generating them and there would definitely be bugs in the IBT sealing. Detect non-relocated text references and handle them appropriately. [ Note: I removed the manual static_call_tramp check -- that should already be handled by the noendbr check. ] Reported-by: Ard Biesheuvel Tested-by: Ard Biesheuvel Acked-by: Peter Zijlstra (Intel) Signed-off-by: Josh Poimboeuf --- tools/objtool/arch/x86/decode.c | 15 +++-- tools/objtool/check.c | 112 ++++++++++++++++++++--------------- tools/objtool/include/objtool/arch.h | 1 + 3 files changed, 75 insertions(+), 53 deletions(-) (limited to 'tools') diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c index ed6bff0e01dc..fe1362c34564 100644 --- a/tools/objtool/arch/x86/decode.c +++ b/tools/objtool/arch/x86/decode.c @@ -456,10 +456,6 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec if (!rex_w) break; - /* skip RIP relative displacement */ - if (is_RIP()) - break; - /* skip nontrivial SIB */ if (have_SIB()) { modrm_rm = sib_base; @@ -467,6 +463,12 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec break; } + /* lea disp(%rip), %dst */ + if (is_RIP()) { + insn->type = INSN_LEA_RIP; + break; + } + /* lea disp(%src), %dst */ ADD_OP(op) { op->src.offset = ins.displacement.value; @@ -737,7 +739,10 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec break; } - insn->immediate = ins.immediate.nbytes ? ins.immediate.value : 0; + if (ins.immediate.nbytes) + insn->immediate = ins.immediate.value; + else if (ins.displacement.nbytes) + insn->immediate = ins.displacement.value; return 0; } diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 6604f5d038aa..7fc96c30b79c 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -4392,6 +4392,51 @@ static bool noendbr_range(struct objtool_file *file, struct instruction *insn) return insn->offset == sym->offset + sym->len; } +static int __validate_ibt_insn(struct objtool_file *file, struct instruction *insn, + struct instruction *dest) +{ + if (dest->type == INSN_ENDBR) { + mark_endbr_used(dest); + return 0; + } + + if (insn_func(dest) && insn_func(insn) && + insn_func(dest)->pfunc == insn_func(insn)->pfunc) { + /* + * Anything from->to self is either _THIS_IP_ or + * IRET-to-self. + * + * There is no sane way to annotate _THIS_IP_ since the + * compiler treats the relocation as a constant and is + * happy to fold in offsets, skewing any annotation we + * do, leading to vast amounts of false-positives. + * + * There's also compiler generated _THIS_IP_ through + * KCOV and such which we have no hope of annotating. + * + * As such, blanket accept self-references without + * issue. + */ + return 0; + } + + /* + * Accept anything ANNOTATE_NOENDBR. + */ + if (dest->noendbr) + return 0; + + /* + * Accept if this is the instruction after a symbol + * that is (no)endbr -- typical code-range usage. + */ + if (noendbr_range(file, dest)) + return 0; + + WARN_INSN(insn, "relocation to !ENDBR: %s", offstr(dest->sec, dest->offset)); + return 1; +} + static int validate_ibt_insn(struct objtool_file *file, struct instruction *insn) { struct instruction *dest; @@ -4404,6 +4449,7 @@ static int validate_ibt_insn(struct objtool_file *file, struct instruction *insn * direct/indirect branches: */ switch (insn->type) { + case INSN_CALL: case INSN_CALL_DYNAMIC: case INSN_JUMP_CONDITIONAL: @@ -4413,6 +4459,23 @@ static int validate_ibt_insn(struct objtool_file *file, struct instruction *insn case INSN_RETURN: case INSN_NOP: return 0; + + case INSN_LEA_RIP: + if (!insn_reloc(file, insn)) { + /* local function pointer reference without reloc */ + + off = arch_jump_destination(insn); + + dest = find_insn(file, insn->sec, off); + if (!dest) { + WARN_INSN(insn, "corrupt function pointer reference"); + return 1; + } + + return __validate_ibt_insn(file, insn, dest); + } + break; + default: break; } @@ -4423,13 +4486,6 @@ static int validate_ibt_insn(struct objtool_file *file, struct instruction *insn reloc_offset(reloc) + 1, (insn->offset + insn->len) - (reloc_offset(reloc) + 1))) { - /* - * static_call_update() references the trampoline, which - * doesn't have (or need) ENDBR. Skip warning in that case. - */ - if (reloc->sym->static_call_tramp) - continue; - off = reloc->sym->offset; if (reloc_type(reloc) == R_X86_64_PC32 || reloc_type(reloc) == R_X86_64_PLT32) @@ -4441,47 +4497,7 @@ static int validate_ibt_insn(struct objtool_file *file, struct instruction *insn if (!dest) continue; - if (dest->type == INSN_ENDBR) { - mark_endbr_used(dest); - continue; - } - - if (insn_func(dest) && insn_func(insn) && - insn_func(dest)->pfunc == insn_func(insn)->pfunc) { - /* - * Anything from->to self is either _THIS_IP_ or - * IRET-to-self. - * - * There is no sane way to annotate _THIS_IP_ since the - * compiler treats the relocation as a constant and is - * happy to fold in offsets, skewing any annotation we - * do, leading to vast amounts of false-positives. - * - * There's also compiler generated _THIS_IP_ through - * KCOV and such which we have no hope of annotating. - * - * As such, blanket accept self-references without - * issue. - */ - continue; - } - - /* - * Accept anything ANNOTATE_NOENDBR. - */ - if (dest->noendbr) - continue; - - /* - * Accept if this is the instruction after a symbol - * that is (no)endbr -- typical code-range usage. - */ - if (noendbr_range(file, dest)) - continue; - - WARN_INSN(insn, "relocation to !ENDBR: %s", offstr(dest->sec, dest->offset)); - - warnings++; + warnings += __validate_ibt_insn(file, insn, dest); } return warnings; diff --git a/tools/objtool/include/objtool/arch.h b/tools/objtool/include/objtool/arch.h index 0b303eba660e..d63b46a19f39 100644 --- a/tools/objtool/include/objtool/arch.h +++ b/tools/objtool/include/objtool/arch.h @@ -28,6 +28,7 @@ enum insn_type { INSN_CLD, INSN_TRAP, INSN_ENDBR, + INSN_LEA_RIP, INSN_OTHER, }; -- cgit v1.2.3 From 32b504854bd96f707a03c6ddecb0af9d7fbc4775 Mon Sep 17 00:00:00 2001 From: HONG Yifan Date: Tue, 8 Oct 2024 23:47:17 +0000 Subject: objtool: Also include tools/include/uapi When building objtool against a sysroot that contains a stripped down version of the UAPI headers, the following error happens: In file included from arch/x86/decode.c:10: In file included from .../tools/arch/x86/include/asm/insn.h:10: In file included from /include/asm/byteorder.h:9: In file included from /include/linux/byteorder/little_endian.h:15: In file included from /include/linux/stddef.h:9: In file included from .../tools/include/linux/compiler_types.h:36: .../tools/include/linux/compiler-gcc.h:3:2: error: "Please don't include directly, include instead." 3 | #error "Please don't include directly, include instead." | ^ 1 error generated. As hinted by the error, this is because /include/linux/stddef.h (a stripped-down version of uapi/include/linux/stddef.h) includes linux/compiler_types.h directly. However, this gets resolved to tools/include/linux/compiler_types.h, which is not expected to be included directly. To resolve this, I added tools/include/uapi to the include paths when building objtool. With this trick, linux/stddef.h is resolved to tools/include/uapi/linux/stddef.h, which doesn't include linux/compiler_types.h. Signed-off-by: HONG Yifan Signed-off-by: Josh Poimboeuf --- tools/objtool/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile index bf7f7f84ac62..f56e27727534 100644 --- a/tools/objtool/Makefile +++ b/tools/objtool/Makefile @@ -24,6 +24,7 @@ LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lel all: $(OBJTOOL) INCLUDES := -I$(srctree)/tools/include \ + -I$(srctree)/tools/include/uapi \ -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \ -I$(srctree)/tools/arch/$(SRCARCH)/include \ -I$(srctree)/tools/objtool/include \ -- cgit v1.2.3 From a9823dae4ccf70c388371e1e135fda0a3e08f4e6 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:44 -0700 Subject: perf build: Fix LIBDW_DIR Testing with a LIBDW_DIR showed that in Makefile.config the dwarf feature tests need the LIBDW_DIR setting in the CFLAGS/LDFLAGS. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-2-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/Makefile.config | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'tools') diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 4ddb27a48eed..c1c7c25887a7 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -162,8 +162,14 @@ ifeq ($(findstring -static,${LDFLAGS}),-static) # Must put -ldl after -lebl for dependency DWARFLIBS += -ldl endif +FEATURE_CHECK_CFLAGS-dwarf := $(LIBDW_CFLAGS) +FEATURE_CHECK_LDFLAGS-dwarf := $(LIBDW_LDFLAGS) $(DWARFLIBS) FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS) FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS) +FEATURE_CHECK_CFLAGS-dwarf_getlocations := $(LIBDW_CFLAGS) +FEATURE_CHECK_LDFLAGS-dwarf_getlocations := $(LIBDW_LDFLAGS) $(DWARFLIBS) +FEATURE_CHECK_CFLAGS-dwarf_getcfi := $(LIBDW_CFLAGS) +FEATURE_CHECK_LDFLAGS-dwarf_getcfi := $(LIBDW_LDFLAGS) $(DWARFLIBS) # for linking with debug library, run like: # make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/ -- cgit v1.2.3 From 54a1368567e8edd4f452085d89239b8b05d36856 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:45 -0700 Subject: perf build: Rename NO_DWARF to NO_LIBDW NO_DWARF could mean more than NO_LIBDW support, in particular no libunwind support. Rename to be more intention revealing. Signed-off-by: Ian Rogers Reviewed-by: Masami Hiramatsu (Google) Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-3-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/Makefile.config | 16 ++++++++-------- tools/perf/Makefile.perf | 2 +- tools/perf/arch/arm/Makefile | 2 +- tools/perf/arch/arm64/Makefile | 2 +- tools/perf/arch/csky/Makefile | 2 +- tools/perf/arch/loongarch/Makefile | 2 +- tools/perf/arch/mips/Makefile | 2 +- tools/perf/arch/powerpc/Makefile | 2 +- tools/perf/arch/riscv/Makefile | 2 +- tools/perf/arch/s390/Makefile | 2 +- tools/perf/arch/sh/Makefile | 2 +- tools/perf/arch/sparc/Makefile | 2 +- tools/perf/arch/x86/Makefile | 2 +- tools/perf/arch/xtensa/Makefile | 2 +- tools/perf/builtin-probe.c | 2 +- 15 files changed, 22 insertions(+), 22 deletions(-) (limited to 'tools') diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index c1c7c25887a7..cc2cfc3aab40 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -432,7 +432,7 @@ ifeq ($(feature-file-handle), 1) endif ifdef NO_LIBELF - NO_DWARF := 1 + NO_LIBDW := 1 NO_LIBUNWIND := 1 NO_LIBDW_DWARF_UNWIND := 1 NO_LIBBPF := 1 @@ -474,9 +474,9 @@ else endif endif ifneq ($(feature-dwarf), 1) - ifndef NO_DWARF + ifndef NO_LIBDW $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev) - NO_DWARF := 1 + NO_LIBDW := 1 endif else ifneq ($(feature-dwarf_getlocations), 1) @@ -499,7 +499,7 @@ ifeq ($(feature-libaio), 1) endif endif -ifdef NO_DWARF +ifdef NO_LIBDW NO_LIBDW_DWARF_UNWIND := 1 endif @@ -577,17 +577,17 @@ ifndef NO_LIBELF endif endif - ifndef NO_DWARF + ifndef NO_LIBDW ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined) $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled) - NO_DWARF := 1 + NO_LIBDW := 1 else CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS) LDFLAGS += $(LIBDW_LDFLAGS) EXTLIBS += ${DWARFLIBS} $(call detected,CONFIG_DWARF) endif # PERF_HAVE_DWARF_REGS - endif # NO_DWARF + endif # NO_LIBDW ifndef NO_LIBBPF ifeq ($(feature-bpf), 1) @@ -636,7 +636,7 @@ ifdef PERF_HAVE_JITDUMP endif ifeq ($(SRCARCH),powerpc) - ifndef NO_DWARF + ifndef NO_LIBDW CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX endif endif diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 105f734b6820..b4dee7c20ed1 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -40,7 +40,7 @@ include ../scripts/utilities.mak # # Define EXTRA_PERFLIBS to pass extra libraries to PERFLIBS. # -# Define NO_DWARF if you do not want debug-info analysis feature at all. +# Define NO_LIBDW if you do not want debug-info analysis feature at all. # # Define WERROR=0 to disable treating any warnings as errors. # diff --git a/tools/perf/arch/arm/Makefile b/tools/perf/arch/arm/Makefile index 1d88fdab13bf..9b164d379548 100644 --- a/tools/perf/arch/arm/Makefile +++ b/tools/perf/arch/arm/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif PERF_HAVE_JITDUMP := 1 diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile index 5735ed4479bb..8a5ffbfe809f 100644 --- a/tools/perf/arch/arm64/Makefile +++ b/tools/perf/arch/arm64/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif PERF_HAVE_JITDUMP := 1 diff --git a/tools/perf/arch/csky/Makefile b/tools/perf/arch/csky/Makefile index 88c08eed9c7b..119b06a64bed 100644 --- a/tools/perf/arch/csky/Makefile +++ b/tools/perf/arch/csky/Makefile @@ -1,4 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif diff --git a/tools/perf/arch/loongarch/Makefile b/tools/perf/arch/loongarch/Makefile index c89d6bb6b184..1cc5eb01f32b 100644 --- a/tools/perf/arch/loongarch/Makefile +++ b/tools/perf/arch/loongarch/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1 diff --git a/tools/perf/arch/mips/Makefile b/tools/perf/arch/mips/Makefile index cd0b011b3be5..733f7b76f52d 100644 --- a/tools/perf/arch/mips/Makefile +++ b/tools/perf/arch/mips/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif diff --git a/tools/perf/arch/powerpc/Makefile b/tools/perf/arch/powerpc/Makefile index bf6d323574f6..7672d555f6cd 100644 --- a/tools/perf/arch/powerpc/Makefile +++ b/tools/perf/arch/powerpc/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif diff --git a/tools/perf/arch/riscv/Makefile b/tools/perf/arch/riscv/Makefile index 90c3c476a242..4664a78a1afd 100644 --- a/tools/perf/arch/riscv/Makefile +++ b/tools/perf/arch/riscv/Makefile @@ -1,4 +1,4 @@ -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1 diff --git a/tools/perf/arch/s390/Makefile b/tools/perf/arch/s390/Makefile index 56994e63b43a..3f66e2ede3f7 100644 --- a/tools/perf/arch/s390/Makefile +++ b/tools/perf/arch/s390/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif HAVE_KVM_STAT_SUPPORT := 1 diff --git a/tools/perf/arch/sh/Makefile b/tools/perf/arch/sh/Makefile index 88c08eed9c7b..119b06a64bed 100644 --- a/tools/perf/arch/sh/Makefile +++ b/tools/perf/arch/sh/Makefile @@ -1,4 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif diff --git a/tools/perf/arch/sparc/Makefile b/tools/perf/arch/sparc/Makefile index 4031db72ba71..7741184894c8 100644 --- a/tools/perf/arch/sparc/Makefile +++ b/tools/perf/arch/sparc/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif diff --git a/tools/perf/arch/x86/Makefile b/tools/perf/arch/x86/Makefile index 67b4969a6738..9aa58acb5564 100644 --- a/tools/perf/arch/x86/Makefile +++ b/tools/perf/arch/x86/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif HAVE_KVM_STAT_SUPPORT := 1 diff --git a/tools/perf/arch/xtensa/Makefile b/tools/perf/arch/xtensa/Makefile index 88c08eed9c7b..119b06a64bed 100644 --- a/tools/perf/arch/xtensa/Makefile +++ b/tools/perf/arch/xtensa/Makefile @@ -1,4 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only -ifndef NO_DWARF +ifndef NO_LIBDW PERF_HAVE_DWARF_REGS := 1 endif diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index 003a3bcebfdf..91672bb3047c 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -616,7 +616,7 @@ __cmd_probe(int argc, const char **argv) set_option_flag(options, 'L', "line", PARSE_OPT_EXCLUSIVE); set_option_flag(options, 'V', "vars", PARSE_OPT_EXCLUSIVE); #else -# define set_nobuild(s, l, c) set_option_nobuild(options, s, l, "NO_DWARF=1", c) +# define set_nobuild(s, l, c) set_option_nobuild(options, s, l, "NO_LIBDW=1", c) set_nobuild('L', "line", false); set_nobuild('V', "vars", false); set_nobuild('\0', "externs", false); -- cgit v1.2.3 From a6c55df973a8399d06d1bed676cb9ea4792e4e29 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:46 -0700 Subject: perf build: Remove defined but never used variable Previously NO_DWARF_UNWIND was part of conditional compilation but it is now unused so remove. Signed-off-by: Ian Rogers Reviewed-by: Masami Hiramatsu (Google) Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-4-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/Makefile.config | 2 -- 1 file changed, 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index cc2cfc3aab40..dd5468b8b5de 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -756,8 +756,6 @@ endif ifeq ($(dwarf-post-unwind),1) CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT $(call detected,CONFIG_DWARF_UNWIND) -else - NO_DWARF_UNWIND := 1 endif ifndef NO_LOCAL_LIBUNWIND -- cgit v1.2.3 From 7c943261a1becfda44ac0468ca329e0f2bb95f2a Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:47 -0700 Subject: perf build: Rename test-dwarf to test-libdw Be more intention revealing that the dwarf test is actually testing for libdw support. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-5-irogers@google.com Signed-off-by: Namhyung Kim --- tools/build/Makefile.feature | 6 +++--- tools/build/feature/Makefile | 16 ++++++++-------- tools/build/feature/test-all.c | 6 +++--- tools/build/feature/test-dwarf.c | 11 ----------- tools/build/feature/test-libdw.c | 11 +++++++++++ tools/perf/Makefile.config | 6 +++--- 6 files changed, 28 insertions(+), 28 deletions(-) delete mode 100644 tools/build/feature/test-dwarf.c create mode 100644 tools/build/feature/test-libdw.c (limited to 'tools') diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index ffd117135094..6025810cc346 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -30,7 +30,7 @@ endef # FEATURE_TESTS_BASIC := \ backtrace \ - dwarf \ + libdw \ dwarf_getlocations \ dwarf_getcfi \ eventfd \ @@ -120,7 +120,7 @@ ifeq ($(FEATURE_TESTS),all) endif FEATURE_DISPLAY ?= \ - dwarf \ + libdw \ dwarf_getlocations \ glibc \ libbfd \ @@ -233,7 +233,7 @@ endef # # generates feature value assignment for name, like: -# $(call feature_assign,dwarf) == feature-dwarf=1 +# $(call feature_assign,libdw) == feature-libdw=1 # feature_assign = feature-$(1)=$(feature-$(1)) diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 1658596188bf..7a1c028ce40b 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -5,7 +5,7 @@ FILES= \ test-all.bin \ test-backtrace.bin \ test-bionic.bin \ - test-dwarf.bin \ + test-libdw.bin \ test-dwarf_getlocations.bin \ test-dwarf_getcfi.bin \ test-eventfd.bin \ @@ -168,9 +168,9 @@ $(OUTPUT)test-libopencsd.bin: $(BUILD) # -lopencsd_c_api -lopencsd provided by # $(FEATURE_CHECK_LDFLAGS-libopencsd) -DWARFLIBS := -ldw +DWLIBS := -ldw ifeq ($(findstring -static,${LDFLAGS}),-static) - DWARFLIBS += -lelf -lz -llzma -lbz2 -lzstd + DWLIBS += -lelf -lz -llzma -lbz2 -lzstd LIBDW_VERSION := $(shell $(PKG_CONFIG) --modversion libdw).0.0 LIBDW_VERSION_1 := $(word 1, $(subst ., ,$(LIBDW_VERSION))) @@ -179,21 +179,21 @@ ifeq ($(findstring -static,${LDFLAGS}),-static) # Elfutils merged libebl.a into libdw.a starting from version 0.177, # Link libebl.a only if libdw is older than this version. ifeq ($(shell test $(LIBDW_VERSION_2) -lt 177; echo $$?),0) - DWARFLIBS += -lebl + DWLIBS += -lebl endif # Must put -ldl after -lebl for dependency DWARFLIBS += -ldl endif -$(OUTPUT)test-dwarf.bin: - $(BUILD) $(DWARFLIBS) +$(OUTPUT)test-libdw.bin: + $(BUILD) $(DWLIBS) $(OUTPUT)test-dwarf_getlocations.bin: - $(BUILD) $(DWARFLIBS) + $(BUILD) $(DWLIBS) $(OUTPUT)test-dwarf_getcfi.bin: - $(BUILD) $(DWARFLIBS) + $(BUILD) $(DWLIBS) $(OUTPUT)test-libelf-getphdrnum.bin: $(BUILD) -lelf diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c index 6f4bf386a3b5..d60e072b6eca 100644 --- a/tools/build/feature/test-all.c +++ b/tools/build/feature/test-all.c @@ -38,8 +38,8 @@ # include "test-glibc.c" #undef main -#define main main_test_dwarf -# include "test-dwarf.c" +#define main main_test_libdw +# include "test-libdw.c" #undef main #define main main_test_dwarf_getlocations @@ -187,7 +187,7 @@ int main(int argc, char *argv[]) main_test_get_current_dir_name(); main_test_gettid(); main_test_glibc(); - main_test_dwarf(); + main_test_libdw(); main_test_dwarf_getlocations(); main_test_eventfd(); main_test_libelf_getphdrnum(); diff --git a/tools/build/feature/test-dwarf.c b/tools/build/feature/test-dwarf.c deleted file mode 100644 index 8d474bd7371b..000000000000 --- a/tools/build/feature/test-dwarf.c +++ /dev/null @@ -1,11 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include -#include - -int main(void) -{ - Dwarf *dbg = dwarf_begin(0, DWARF_C_READ); - - return (long)dbg; -} diff --git a/tools/build/feature/test-libdw.c b/tools/build/feature/test-libdw.c new file mode 100644 index 000000000000..8d474bd7371b --- /dev/null +++ b/tools/build/feature/test-libdw.c @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include + +int main(void) +{ + Dwarf *dbg = dwarf_begin(0, DWARF_C_READ); + + return (long)dbg; +} diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index dd5468b8b5de..f1e24c4ae123 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -162,8 +162,8 @@ ifeq ($(findstring -static,${LDFLAGS}),-static) # Must put -ldl after -lebl for dependency DWARFLIBS += -ldl endif -FEATURE_CHECK_CFLAGS-dwarf := $(LIBDW_CFLAGS) -FEATURE_CHECK_LDFLAGS-dwarf := $(LIBDW_LDFLAGS) $(DWARFLIBS) +FEATURE_CHECK_CFLAGS-libdw := $(LIBDW_CFLAGS) +FEATURE_CHECK_LDFLAGS-libdw := $(LIBDW_LDFLAGS) $(DWARFLIBS) FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS) FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS) FEATURE_CHECK_CFLAGS-dwarf_getlocations := $(LIBDW_CFLAGS) @@ -473,7 +473,7 @@ else $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR) endif endif - ifneq ($(feature-dwarf), 1) + ifneq ($(feature-libdw), 1) ifndef NO_LIBDW $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev) NO_LIBDW := 1 -- cgit v1.2.3 From 3034b48a4bc13effd3be03b44111b1cf0384bc13 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:48 -0700 Subject: perf build: Combine libdw-dwarf-unwind into libdw feature tests Support in libdw has been present for 10 years so let's simplify the build logic with a single feature test. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-6-irogers@google.com Signed-off-by: Namhyung Kim --- tools/build/Makefile.feature | 2 -- tools/build/feature/Makefile | 4 ---- tools/build/feature/test-all.c | 5 ----- tools/build/feature/test-libdw-dwarf-unwind.c | 14 -------------- tools/build/feature/test-libdw.c | 19 ++++++++++++++++++- tools/perf/Makefile.config | 8 -------- 6 files changed, 18 insertions(+), 34 deletions(-) delete mode 100644 tools/build/feature/test-libdw-dwarf-unwind.c (limited to 'tools') diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index 6025810cc346..db3695ec5f83 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -60,7 +60,6 @@ FEATURE_TESTS_BASIC := \ reallocarray \ stackprotector-all \ timerfd \ - libdw-dwarf-unwind \ zlib \ lzma \ get_cpuid \ @@ -133,7 +132,6 @@ FEATURE_DISPLAY ?= \ libpython \ libcrypto \ libunwind \ - libdw-dwarf-unwind \ libcapstone \ llvm-perf \ zlib \ diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 7a1c028ce40b..18f8fef5e843 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -52,7 +52,6 @@ FILES= \ test-pthread-barrier.bin \ test-stackprotector-all.bin \ test-timerfd.bin \ - test-libdw-dwarf-unwind.bin \ test-libbabeltrace.bin \ test-libcapstone.bin \ test-compile-32.bin \ @@ -317,9 +316,6 @@ $(OUTPUT)test-backtrace.bin: $(OUTPUT)test-timerfd.bin: $(BUILD) -$(OUTPUT)test-libdw-dwarf-unwind.bin: - $(BUILD) # -ldw provided by $(FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind) - $(OUTPUT)test-libbabeltrace.bin: $(BUILD) # -lbabeltrace provided by $(FEATURE_CHECK_LDFLAGS-libbabeltrace) diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c index d60e072b6eca..863c82516433 100644 --- a/tools/build/feature/test-all.c +++ b/tools/build/feature/test-all.c @@ -98,10 +98,6 @@ # include "test-stackprotector-all.c" #undef main -#define main main_test_libdw_dwarf_unwind -# include "test-libdw-dwarf-unwind.c" -#undef main - #define main main_test_zlib # include "test-zlib.c" #undef main @@ -202,7 +198,6 @@ int main(int argc, char *argv[]) main_test_numa_num_possible_cpus(); main_test_timerfd(); main_test_stackprotector_all(); - main_test_libdw_dwarf_unwind(); main_test_zlib(); main_test_pthread_attr_setaffinity_np(); main_test_pthread_barrier(); diff --git a/tools/build/feature/test-libdw-dwarf-unwind.c b/tools/build/feature/test-libdw-dwarf-unwind.c deleted file mode 100644 index ed03d9505609..000000000000 --- a/tools/build/feature/test-libdw-dwarf-unwind.c +++ /dev/null @@ -1,14 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -#include - -int main(void) -{ - /* - * This function is guarded via: __nonnull_attribute__ (1, 2). - * Passing '1' as arguments value. This code is never executed, - * only compiled. - */ - dwfl_thread_getframes((void *) 1, (void *) 1, NULL); - return 0; -} diff --git a/tools/build/feature/test-libdw.c b/tools/build/feature/test-libdw.c index 8d474bd7371b..793f4ac49514 100644 --- a/tools/build/feature/test-libdw.c +++ b/tools/build/feature/test-libdw.c @@ -1,11 +1,28 @@ // SPDX-License-Identifier: GPL-2.0 #include #include +#include #include -int main(void) +int test_libdw(void) { Dwarf *dbg = dwarf_begin(0, DWARF_C_READ); return (long)dbg; } + +int test_libdw_unwind(void) +{ + /* + * This function is guarded via: __nonnull_attribute__ (1, 2). + * Passing '1' as arguments value. This code is never executed, + * only compiled. + */ + dwfl_thread_getframes((void *) 1, (void *) 1, NULL); + return 0; +} + +int main(void) +{ + return test_libdw() + test_libdw_unwind(); +} diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index f1e24c4ae123..fa59ecce4470 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -164,8 +164,6 @@ ifeq ($(findstring -static,${LDFLAGS}),-static) endif FEATURE_CHECK_CFLAGS-libdw := $(LIBDW_CFLAGS) FEATURE_CHECK_LDFLAGS-libdw := $(LIBDW_LDFLAGS) $(DWARFLIBS) -FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS) -FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS) FEATURE_CHECK_CFLAGS-dwarf_getlocations := $(LIBDW_CFLAGS) FEATURE_CHECK_LDFLAGS-dwarf_getlocations := $(LIBDW_LDFLAGS) $(DWARFLIBS) FEATURE_CHECK_CFLAGS-dwarf_getcfi := $(LIBDW_CFLAGS) @@ -467,12 +465,6 @@ else endif endif else - ifndef NO_LIBDW_DWARF_UNWIND - ifneq ($(feature-libdw-dwarf-unwind),1) - NO_LIBDW_DWARF_UNWIND := 1 - $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR) - endif - endif ifneq ($(feature-libdw), 1) ifndef NO_LIBDW $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev) -- cgit v1.2.3 From 23580d7bb1f9a60bf60a26ce25615d18ca9b3e55 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:49 -0700 Subject: perf build: Combine test-dwarf-getlocations into test-libdw dwarf_getlocations support in libdw is more than 10 years old. Make libdw imply dwarf_getlocations support and simplify build logic. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-7-irogers@google.com Signed-off-by: Namhyung Kim --- tools/build/Makefile.feature | 2 -- tools/build/feature/Makefile | 4 ---- tools/build/feature/test-all.c | 5 ----- tools/build/feature/test-dwarf_getlocations.c | 13 ------------- tools/build/feature/test-libdw.c | 14 +++++++++++++- tools/perf/Makefile.config | 10 ++-------- 6 files changed, 15 insertions(+), 33 deletions(-) delete mode 100644 tools/build/feature/test-dwarf_getlocations.c (limited to 'tools') diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index db3695ec5f83..cf6a967575ea 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -31,7 +31,6 @@ endef FEATURE_TESTS_BASIC := \ backtrace \ libdw \ - dwarf_getlocations \ dwarf_getcfi \ eventfd \ fortify-source \ @@ -120,7 +119,6 @@ endif FEATURE_DISPLAY ?= \ libdw \ - dwarf_getlocations \ glibc \ libbfd \ libbfd-buildid \ diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 18f8fef5e843..0af3e0255fed 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -6,7 +6,6 @@ FILES= \ test-backtrace.bin \ test-bionic.bin \ test-libdw.bin \ - test-dwarf_getlocations.bin \ test-dwarf_getcfi.bin \ test-eventfd.bin \ test-fortify-source.bin \ @@ -188,9 +187,6 @@ endif $(OUTPUT)test-libdw.bin: $(BUILD) $(DWLIBS) -$(OUTPUT)test-dwarf_getlocations.bin: - $(BUILD) $(DWLIBS) - $(OUTPUT)test-dwarf_getcfi.bin: $(BUILD) $(DWLIBS) diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c index 863c82516433..59ef3d7fe6a4 100644 --- a/tools/build/feature/test-all.c +++ b/tools/build/feature/test-all.c @@ -42,10 +42,6 @@ # include "test-libdw.c" #undef main -#define main main_test_dwarf_getlocations -# include "test-dwarf_getlocations.c" -#undef main - #define main main_test_eventfd # include "test-eventfd.c" #undef main @@ -184,7 +180,6 @@ int main(int argc, char *argv[]) main_test_gettid(); main_test_glibc(); main_test_libdw(); - main_test_dwarf_getlocations(); main_test_eventfd(); main_test_libelf_getphdrnum(); main_test_libelf_gelf_getnote(); diff --git a/tools/build/feature/test-dwarf_getlocations.c b/tools/build/feature/test-dwarf_getlocations.c deleted file mode 100644 index 78fb4a1fa68c..000000000000 --- a/tools/build/feature/test-dwarf_getlocations.c +++ /dev/null @@ -1,13 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -int main(void) -{ - Dwarf_Addr base, start, end; - Dwarf_Attribute attr; - Dwarf_Op *op; - size_t nops; - ptrdiff_t offset = 0; - return (int)dwarf_getlocations(&attr, offset, &base, &start, &end, &op, &nops); -} diff --git a/tools/build/feature/test-libdw.c b/tools/build/feature/test-libdw.c index 793f4ac49514..83ea5d5f235d 100644 --- a/tools/build/feature/test-libdw.c +++ b/tools/build/feature/test-libdw.c @@ -1,4 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 +#include #include #include #include @@ -22,7 +23,18 @@ int test_libdw_unwind(void) return 0; } +int test_libdw_getlocations(void) +{ + Dwarf_Addr base, start, end; + Dwarf_Attribute attr; + Dwarf_Op *op; + size_t nops; + ptrdiff_t offset = 0; + + return (int)dwarf_getlocations(&attr, offset, &base, &start, &end, &op, &nops); +} + int main(void) { - return test_libdw() + test_libdw_unwind(); + return test_libdw() + test_libdw_unwind() + test_libdw_getlocations(); } diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index fa59ecce4470..fefa779041a0 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -164,8 +164,6 @@ ifeq ($(findstring -static,${LDFLAGS}),-static) endif FEATURE_CHECK_CFLAGS-libdw := $(LIBDW_CFLAGS) FEATURE_CHECK_LDFLAGS-libdw := $(LIBDW_LDFLAGS) $(DWARFLIBS) -FEATURE_CHECK_CFLAGS-dwarf_getlocations := $(LIBDW_CFLAGS) -FEATURE_CHECK_LDFLAGS-dwarf_getlocations := $(LIBDW_LDFLAGS) $(DWARFLIBS) FEATURE_CHECK_CFLAGS-dwarf_getcfi := $(LIBDW_CFLAGS) FEATURE_CHECK_LDFLAGS-dwarf_getcfi := $(LIBDW_LDFLAGS) $(DWARFLIBS) @@ -467,15 +465,11 @@ else else ifneq ($(feature-libdw), 1) ifndef NO_LIBDW - $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev) + $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.157, disables dwarf support. Please install new elfutils-devel/libdw-dev) NO_LIBDW := 1 endif else - ifneq ($(feature-dwarf_getlocations), 1) - $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157) - else - CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT - endif # dwarf_getlocations + CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT ifneq ($(feature-dwarf_getcfi), 1) $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.142) else -- cgit v1.2.3 From 26385fd237260f27befd49e25674baf3901050d4 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:50 -0700 Subject: perf build: Combine test-dwarf-getcfi into test-libdw dwarf_getcfi support in libdw is 15 years old. Make libdw imply dwarf_getcfi support and simplify build logic. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-8-irogers@google.com Signed-off-by: Namhyung Kim --- tools/build/Makefile.feature | 1 - tools/build/feature/Makefile | 4 ---- tools/build/feature/test-dwarf_getcfi.c | 9 --------- tools/build/feature/test-libdw.c | 10 +++++++++- tools/perf/Makefile.config | 8 +------- 5 files changed, 10 insertions(+), 22 deletions(-) delete mode 100644 tools/build/feature/test-dwarf_getcfi.c (limited to 'tools') diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index cf6a967575ea..ef72aae3dd49 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -31,7 +31,6 @@ endef FEATURE_TESTS_BASIC := \ backtrace \ libdw \ - dwarf_getcfi \ eventfd \ fortify-source \ get_current_dir_name \ diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 0af3e0255fed..d28ad7672a27 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -6,7 +6,6 @@ FILES= \ test-backtrace.bin \ test-bionic.bin \ test-libdw.bin \ - test-dwarf_getcfi.bin \ test-eventfd.bin \ test-fortify-source.bin \ test-get_current_dir_name.bin \ @@ -187,9 +186,6 @@ endif $(OUTPUT)test-libdw.bin: $(BUILD) $(DWLIBS) -$(OUTPUT)test-dwarf_getcfi.bin: - $(BUILD) $(DWLIBS) - $(OUTPUT)test-libelf-getphdrnum.bin: $(BUILD) -lelf diff --git a/tools/build/feature/test-dwarf_getcfi.c b/tools/build/feature/test-dwarf_getcfi.c deleted file mode 100644 index 50e7d7cb7bdf..000000000000 --- a/tools/build/feature/test-dwarf_getcfi.c +++ /dev/null @@ -1,9 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -int main(void) -{ - Dwarf *dwarf = NULL; - return dwarf_getcfi(dwarf) == NULL; -} diff --git a/tools/build/feature/test-libdw.c b/tools/build/feature/test-libdw.c index 83ea5d5f235d..71c6f8e3b0ee 100644 --- a/tools/build/feature/test-libdw.c +++ b/tools/build/feature/test-libdw.c @@ -34,7 +34,15 @@ int test_libdw_getlocations(void) return (int)dwarf_getlocations(&attr, offset, &base, &start, &end, &op, &nops); } +int test_libdw_getcfi(void) +{ + Dwarf *dwarf = NULL; + + return dwarf_getcfi(dwarf) == NULL; +} + int main(void) { - return test_libdw() + test_libdw_unwind() + test_libdw_getlocations(); + return test_libdw() + test_libdw_unwind() + test_libdw_getlocations() + + test_libdw_getcfi(); } diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index fefa779041a0..6378811f2568 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -164,8 +164,6 @@ ifeq ($(findstring -static,${LDFLAGS}),-static) endif FEATURE_CHECK_CFLAGS-libdw := $(LIBDW_CFLAGS) FEATURE_CHECK_LDFLAGS-libdw := $(LIBDW_LDFLAGS) $(DWARFLIBS) -FEATURE_CHECK_CFLAGS-dwarf_getcfi := $(LIBDW_CFLAGS) -FEATURE_CHECK_LDFLAGS-dwarf_getcfi := $(LIBDW_LDFLAGS) $(DWARFLIBS) # for linking with debug library, run like: # make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/ @@ -470,11 +468,7 @@ else endif else CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT - ifneq ($(feature-dwarf_getcfi), 1) - $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.142) - else - CFLAGS += -DHAVE_DWARF_CFI_SUPPORT - endif # dwarf_getcfi + CFLAGS += -DHAVE_DWARF_CFI_SUPPORT endif # Dwarf support endif # libelf support endif # NO_LIBELF -- cgit v1.2.3 From 91e81e988fc9c51f9f9f4cf6de74aa66a57b4361 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:51 -0700 Subject: perf probe: Move elfutils support check to libdw check The test _ELFUTILS_PREREQ(0, 142) is false for elfutils before 2009-06-13, but that is 15 years ago and very unlikely. Add a test to test-libdw.c and assume the libdw version is at least 0.142 to simplify the build logic. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-9-irogers@google.com Signed-off-by: Namhyung Kim --- tools/build/feature/test-libdw.c | 10 +++++++++- tools/perf/util/probe-finder.c | 2 -- tools/perf/util/probe-finder.h | 2 -- 3 files changed, 9 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/build/feature/test-libdw.c b/tools/build/feature/test-libdw.c index 71c6f8e3b0ee..2fb59479ab77 100644 --- a/tools/build/feature/test-libdw.c +++ b/tools/build/feature/test-libdw.c @@ -41,8 +41,16 @@ int test_libdw_getcfi(void) return dwarf_getcfi(dwarf) == NULL; } +int test_elfutils(void) +{ + Dwarf_CFI *cfi = NULL; + + dwarf_cfi_end(cfi); + return 0; +} + int main(void) { return test_libdw() + test_libdw_unwind() + test_libdw_getlocations() + - test_libdw_getcfi(); + test_libdw_getcfi() + test_elfutils(); } diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index a30f88ed0300..bb27a406b7c6 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -1379,9 +1379,7 @@ int debuginfo__find_trace_events(struct debuginfo *dbg, if (ret >= 0 && tf.pf.skip_empty_arg) ret = fill_empty_trace_arg(pev, tf.tevs, tf.ntevs); -#if _ELFUTILS_PREREQ(0, 142) dwarf_cfi_end(tf.pf.cfi_eh); -#endif if (ret < 0 || tf.ntevs == 0) { for (i = 0; i < tf.ntevs; i++) diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h index 724db829b49e..5ced3b058fd8 100644 --- a/tools/perf/util/probe-finder.h +++ b/tools/perf/util/probe-finder.h @@ -63,12 +63,10 @@ struct probe_finder { struct intlist *lcache; /* Line cache for lazy match */ /* For variable searching */ -#if _ELFUTILS_PREREQ(0, 142) /* Call Frame Information from .eh_frame. Owned by this struct. */ Dwarf_CFI *cfi_eh; /* Call Frame Information from .debug_frame. Not owned. */ Dwarf_CFI *cfi_dbg; -#endif Dwarf_Op *fb_ops; /* Frame base attribute */ unsigned int machine; /* Target machine arch */ struct perf_probe_arg *pvar; /* Current target variable */ -- cgit v1.2.3 From 5eb2242513072b9ad3d39ff13d771479554ae4aa Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:52 -0700 Subject: perf libdw: Remove unnecessary defines As HAVE_DWARF_GETLOCATIONS_SUPPORT and HAVE_DWARF_CFI_SUPPORT always match HAVE_DWARF_SUPPORT remove the macros and use HAVE_DWARF_SUPPORT. If building the file is guarded by CONFIG_DWARF then remove all ifs. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-10-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-check.txt | 2 +- tools/perf/Makefile.config | 3 -- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-check.c | 2 +- tools/perf/builtin-report.c | 2 +- tools/perf/util/dwarf-aux.c | 6 ---- tools/perf/util/dwarf-aux.h | 54 --------------------------------- tools/perf/util/probe-finder.c | 4 --- 8 files changed, 4 insertions(+), 71 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-check.txt b/tools/perf/Documentation/perf-check.txt index 10f69fb6850b..45101a8e4154 100644 --- a/tools/perf/Documentation/perf-check.txt +++ b/tools/perf/Documentation/perf-check.txt @@ -48,7 +48,7 @@ feature:: bpf_skeletons / HAVE_BPF_SKEL debuginfod / HAVE_DEBUGINFOD_SUPPORT dwarf / HAVE_DWARF_SUPPORT - dwarf_getlocations / HAVE_DWARF_GETLOCATIONS_SUPPORT + dwarf_getlocations / HAVE_DWARF_SUPPORT dwarf-unwind / HAVE_DWARF_UNWIND_SUPPORT auxtrace / HAVE_AUXTRACE_SUPPORT libaudit / HAVE_LIBAUDIT_SUPPORT diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 6378811f2568..7dbcf8394f3d 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -466,9 +466,6 @@ else $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.157, disables dwarf support. Please install new elfutils-devel/libdw-dev) NO_LIBDW := 1 endif - else - CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT - CFLAGS += -DHAVE_DWARF_CFI_SUPPORT endif # Dwarf support endif # libelf support endif # NO_LIBELF diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 3dc6197ef3fa..04af13eb4a4c 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -840,7 +840,7 @@ int cmd_annotate(int argc, const char **argv) } #endif -#ifndef HAVE_DWARF_GETLOCATIONS_SUPPORT +#ifndef HAVE_DWARF_SUPPORT if (annotate.data_type) { pr_err("Error: Data type profiling is disabled due to missing DWARF support\n"); return -ENOTSUP; diff --git a/tools/perf/builtin-check.c b/tools/perf/builtin-check.c index 0b76b6e42b78..18c0a815243b 100644 --- a/tools/perf/builtin-check.c +++ b/tools/perf/builtin-check.c @@ -28,7 +28,7 @@ struct feature_status supported_features[] = { FEATURE_STATUS("bpf_skeletons", HAVE_BPF_SKEL), FEATURE_STATUS("debuginfod", HAVE_DEBUGINFOD_SUPPORT), FEATURE_STATUS("dwarf", HAVE_DWARF_SUPPORT), - FEATURE_STATUS("dwarf_getlocations", HAVE_DWARF_GETLOCATIONS_SUPPORT), + FEATURE_STATUS("dwarf_getlocations", HAVE_DWARF_SUPPORT), FEATURE_STATUS("dwarf-unwind", HAVE_DWARF_UNWIND_SUPPORT), FEATURE_STATUS("auxtrace", HAVE_AUXTRACE_SUPPORT), FEATURE_STATUS("libaudit", HAVE_LIBAUDIT_SUPPORT), diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 36b344e39dd6..2251aa61ea53 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -1705,7 +1705,7 @@ repeat: report.data_type = true; annotate_opts.annotate_src = false; -#ifndef HAVE_DWARF_GETLOCATIONS_SUPPORT +#ifndef HAVE_DWARF_SUPPORT pr_err("Error: Data type profiling is disabled due to missing DWARF support\n"); goto error; #endif diff --git a/tools/perf/util/dwarf-aux.c b/tools/perf/util/dwarf-aux.c index 92eb9c8dc3e5..559c953ca172 100644 --- a/tools/perf/util/dwarf-aux.c +++ b/tools/perf/util/dwarf-aux.c @@ -1182,7 +1182,6 @@ int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf) return ret < 0 ? ret : strbuf_addf(buf, "\t%s", dwarf_diename(vr_die)); } -#if defined(HAVE_DWARF_GETLOCATIONS_SUPPORT) || defined(HAVE_DWARF_CFI_SUPPORT) static int reg_from_dwarf_op(Dwarf_Op *op) { switch (op->atom) { @@ -1245,9 +1244,7 @@ static bool check_allowed_ops(Dwarf_Op *ops, size_t nops) } return true; } -#endif /* HAVE_DWARF_GETLOCATIONS_SUPPORT || HAVE_DWARF_CFI_SUPPORT */ -#ifdef HAVE_DWARF_GETLOCATIONS_SUPPORT /** * die_get_var_innermost_scope - Get innermost scope range of given variable DIE * @sp_die: a subprogram DIE @@ -1697,9 +1694,7 @@ void die_collect_global_vars(Dwarf_Die *cu_die, struct die_var_type **var_types) die_find_child(cu_die, __die_collect_global_vars_cb, (void *)var_types, &die_mem); } -#endif /* HAVE_DWARF_GETLOCATIONS_SUPPORT */ -#ifdef HAVE_DWARF_CFI_SUPPORT /** * die_get_cfa - Get frame base information * @dwarf: a Dwarf info @@ -1732,7 +1727,6 @@ int die_get_cfa(Dwarf *dwarf, u64 pc, int *preg, int *poffset) } return -1; } -#endif /* HAVE_DWARF_CFI_SUPPORT */ /* * die_has_loclist - Check if DW_AT_location of @vr_die is a location list diff --git a/tools/perf/util/dwarf-aux.h b/tools/perf/util/dwarf-aux.h index bd7505812569..892c8c5c23fc 100644 --- a/tools/perf/util/dwarf-aux.h +++ b/tools/perf/util/dwarf-aux.h @@ -9,7 +9,6 @@ #include #include #include -#include struct strbuf; @@ -157,8 +156,6 @@ Dwarf_Die *die_get_member_type(Dwarf_Die *type_die, int offset, Dwarf_Die *die_m /* Return type info where the pointer and offset point to */ Dwarf_Die *die_deref_ptr_type(Dwarf_Die *ptr_die, int offset, Dwarf_Die *die_mem); -#ifdef HAVE_DWARF_GETLOCATIONS_SUPPORT - /* Get byte offset range of given variable DIE */ int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf); @@ -177,58 +174,7 @@ void die_collect_vars(Dwarf_Die *sc_die, struct die_var_type **var_types); /* Save all global variables in this CU */ void die_collect_global_vars(Dwarf_Die *cu_die, struct die_var_type **var_types); -#else /* HAVE_DWARF_GETLOCATIONS_SUPPORT */ - -static inline int die_get_var_range(Dwarf_Die *sp_die __maybe_unused, - Dwarf_Die *vr_die __maybe_unused, - struct strbuf *buf __maybe_unused) -{ - return -ENOTSUP; -} - -static inline Dwarf_Die *die_find_variable_by_reg(Dwarf_Die *sc_die __maybe_unused, - Dwarf_Addr pc __maybe_unused, - int reg __maybe_unused, - int *poffset __maybe_unused, - bool is_fbreg __maybe_unused, - Dwarf_Die *die_mem __maybe_unused) -{ - return NULL; -} - -static inline Dwarf_Die *die_find_variable_by_addr(Dwarf_Die *sc_die __maybe_unused, - Dwarf_Addr addr __maybe_unused, - Dwarf_Die *die_mem __maybe_unused, - int *offset __maybe_unused) -{ - return NULL; -} - -static inline void die_collect_vars(Dwarf_Die *sc_die __maybe_unused, - struct die_var_type **var_types __maybe_unused) -{ -} - -static inline void die_collect_global_vars(Dwarf_Die *cu_die __maybe_unused, - struct die_var_type **var_types __maybe_unused) -{ -} - -#endif /* HAVE_DWARF_GETLOCATIONS_SUPPORT */ - -#ifdef HAVE_DWARF_CFI_SUPPORT - /* Get the frame base information from CFA */ int die_get_cfa(Dwarf *dwarf, u64 pc, int *preg, int *poffset); -#else /* HAVE_DWARF_CFI_SUPPORT */ - -static inline int die_get_cfa(Dwarf *dwarf __maybe_unused, u64 pc __maybe_unused, - int *preg __maybe_unused, int *poffset __maybe_unused) -{ - return -1; -} - -#endif /* HAVE_DWARF_CFI_SUPPORT */ - #endif /* _DWARF_AUX_H */ diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index bb27a406b7c6..18181017f5fd 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -602,7 +602,6 @@ static int call_probe_finder(Dwarf_Die *sc_die, struct probe_finder *pf) ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1); if (ret <= 0 || nops == 0) { pf->fb_ops = NULL; -#ifdef HAVE_DWARF_CFI_SUPPORT } else if (nops == 1 && pf->fb_ops[0].atom == DW_OP_call_frame_cfa && (pf->cfi_eh != NULL || pf->cfi_dbg != NULL)) { if ((dwarf_cfi_addrframe(pf->cfi_eh, pf->addr, &frame) != 0 && @@ -613,7 +612,6 @@ static int call_probe_finder(Dwarf_Die *sc_die, struct probe_finder *pf) free(frame); return -ENOENT; } -#endif /* HAVE_DWARF_CFI_SUPPORT */ } /* Call finder's callback handler */ @@ -1138,7 +1136,6 @@ static int debuginfo__find_probes(struct debuginfo *dbg, pf->machine = ehdr.e_machine; -#ifdef HAVE_DWARF_CFI_SUPPORT do { GElf_Shdr shdr; @@ -1148,7 +1145,6 @@ static int debuginfo__find_probes(struct debuginfo *dbg, pf->cfi_dbg = dwarf_getcfi(dbg->dbg); } while (0); -#endif /* HAVE_DWARF_CFI_SUPPORT */ ret = debuginfo__find_probe_location(dbg, pf); return ret; -- cgit v1.2.3 From 8838abf6261444f7d8047c363f90cafbd2ff32c5 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:53 -0700 Subject: perf build: Rename HAVE_DWARF_SUPPORT to HAVE_LIBDW_SUPPORT In Makefile.config for unwinding the name dwarf implies either libunwind or libdw. Make it clearer that HAVE_DWARF_SUPPORT is really just defined when libdw is present by renaming to HAVE_LIBDW_SUPPORT. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-11-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-check.txt | 6 +++--- tools/perf/Makefile.config | 2 +- tools/perf/arch/powerpc/annotate/instructions.c | 4 ++-- tools/perf/arch/x86/annotate/instructions.c | 2 +- tools/perf/builtin-annotate.c | 2 +- tools/perf/builtin-check.c | 6 +++--- tools/perf/builtin-probe.c | 12 ++++++------ tools/perf/builtin-report.c | 4 ++-- tools/perf/util/annotate-data.h | 8 ++++---- tools/perf/util/debuginfo.h | 6 +++--- tools/perf/util/disasm.c | 4 ++-- tools/perf/util/disasm.h | 4 ++-- tools/perf/util/genelf.c | 4 ++-- tools/perf/util/genelf.h | 2 +- tools/perf/util/include/dwarf-regs.h | 6 +++--- tools/perf/util/probe-event.c | 4 ++-- tools/perf/util/probe-finder.h | 4 ++-- 17 files changed, 40 insertions(+), 40 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-check.txt b/tools/perf/Documentation/perf-check.txt index 45101a8e4154..31741499e786 100644 --- a/tools/perf/Documentation/perf-check.txt +++ b/tools/perf/Documentation/perf-check.txt @@ -47,15 +47,15 @@ feature:: bpf / HAVE_LIBBPF_SUPPORT bpf_skeletons / HAVE_BPF_SKEL debuginfod / HAVE_DEBUGINFOD_SUPPORT - dwarf / HAVE_DWARF_SUPPORT - dwarf_getlocations / HAVE_DWARF_SUPPORT + dwarf / HAVE_LIBDW_SUPPORT + dwarf_getlocations / HAVE_LIBDW_SUPPORT dwarf-unwind / HAVE_DWARF_UNWIND_SUPPORT auxtrace / HAVE_AUXTRACE_SUPPORT libaudit / HAVE_LIBAUDIT_SUPPORT libbfd / HAVE_LIBBFD_SUPPORT libcapstone / HAVE_LIBCAPSTONE_SUPPORT libcrypto / HAVE_LIBCRYPTO_SUPPORT - libdw-dwarf-unwind / HAVE_DWARF_SUPPORT + libdw-dwarf-unwind / HAVE_LIBDW_SUPPORT libelf / HAVE_LIBELF_SUPPORT libnuma / HAVE_LIBNUMA_SUPPORT libopencsd / HAVE_CSTRACE_SUPPORT diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 7dbcf8394f3d..d0ad2919983c 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -559,7 +559,7 @@ ifndef NO_LIBELF $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled) NO_LIBDW := 1 else - CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS) + CFLAGS += -DHAVE_LIBDW_SUPPORT $(LIBDW_CFLAGS) LDFLAGS += $(LIBDW_LDFLAGS) EXTLIBS += ${DWARFLIBS} $(call detected,CONFIG_DWARF) diff --git a/tools/perf/arch/powerpc/annotate/instructions.c b/tools/perf/arch/powerpc/annotate/instructions.c index ede9eeade0ab..54478cf5cccc 100644 --- a/tools/perf/arch/powerpc/annotate/instructions.c +++ b/tools/perf/arch/powerpc/annotate/instructions.c @@ -255,7 +255,7 @@ static struct ins_ops *check_ppc_insn(struct disasm_line *dl) * is moved to r31. update_insn_state_powerpc tracks these state * changes */ -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT static void update_insn_state_powerpc(struct type_state *state, struct data_loc_info *dloc, Dwarf_Die * cu_die __maybe_unused, struct disasm_line *dl) @@ -300,7 +300,7 @@ static void update_insn_state_powerpc(struct type_state *state, insn_offset, src->reg1, dst->reg1); pr_debug_type_name(&tsr->type, tsr->kind); } -#endif /* HAVE_DWARF_SUPPORT */ +#endif /* HAVE_LIBDW_SUPPORT */ static int powerpc__annotate_init(struct arch *arch, char *cpuid __maybe_unused) { diff --git a/tools/perf/arch/x86/annotate/instructions.c b/tools/perf/arch/x86/annotate/instructions.c index 5caf5a17f03d..c869abe3c31d 100644 --- a/tools/perf/arch/x86/annotate/instructions.c +++ b/tools/perf/arch/x86/annotate/instructions.c @@ -207,7 +207,7 @@ static int x86__annotate_init(struct arch *arch, char *cpuid) return err; } -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT static void update_insn_state_x86(struct type_state *state, struct data_loc_info *dloc, Dwarf_Die *cu_die, struct disasm_line *dl) diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 04af13eb4a4c..bb87e6e7687d 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -840,7 +840,7 @@ int cmd_annotate(int argc, const char **argv) } #endif -#ifndef HAVE_DWARF_SUPPORT +#ifndef HAVE_LIBDW_SUPPORT if (annotate.data_type) { pr_err("Error: Data type profiling is disabled due to missing DWARF support\n"); return -ENOTSUP; diff --git a/tools/perf/builtin-check.c b/tools/perf/builtin-check.c index 18c0a815243b..2346536a5ee1 100644 --- a/tools/perf/builtin-check.c +++ b/tools/perf/builtin-check.c @@ -27,15 +27,15 @@ struct feature_status supported_features[] = { FEATURE_STATUS("bpf", HAVE_LIBBPF_SUPPORT), FEATURE_STATUS("bpf_skeletons", HAVE_BPF_SKEL), FEATURE_STATUS("debuginfod", HAVE_DEBUGINFOD_SUPPORT), - FEATURE_STATUS("dwarf", HAVE_DWARF_SUPPORT), - FEATURE_STATUS("dwarf_getlocations", HAVE_DWARF_SUPPORT), + FEATURE_STATUS("dwarf", HAVE_LIBDW_SUPPORT), + FEATURE_STATUS("dwarf_getlocations", HAVE_LIBDW_SUPPORT), FEATURE_STATUS("dwarf-unwind", HAVE_DWARF_UNWIND_SUPPORT), FEATURE_STATUS("auxtrace", HAVE_AUXTRACE_SUPPORT), FEATURE_STATUS("libaudit", HAVE_LIBAUDIT_SUPPORT), FEATURE_STATUS("libbfd", HAVE_LIBBFD_SUPPORT), FEATURE_STATUS("libcapstone", HAVE_LIBCAPSTONE_SUPPORT), FEATURE_STATUS("libcrypto", HAVE_LIBCRYPTO_SUPPORT), - FEATURE_STATUS("libdw-dwarf-unwind", HAVE_DWARF_SUPPORT), + FEATURE_STATUS("libdw-dwarf-unwind", HAVE_LIBDW_SUPPORT), FEATURE_STATUS("libelf", HAVE_LIBELF_SUPPORT), FEATURE_STATUS("libnuma", HAVE_LIBNUMA_SUPPORT), FEATURE_STATUS("libopencsd", HAVE_CSTRACE_SUPPORT), diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index 91672bb3047c..69800e4d9530 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -229,7 +229,7 @@ static int opt_set_target_ns(const struct option *opt __maybe_unused, /* Command option callbacks */ -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT static int opt_show_lines(const struct option *opt, const char *str, int unset __maybe_unused) { @@ -505,7 +505,7 @@ out: return ret; } -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT #define PROBEDEF_STR \ "[EVENT=]FUNC[@SRC][+OFF|%return|:RL|;PT]|SRC:AL|SRC;PT [[NAME=]ARG ...]" #else @@ -521,7 +521,7 @@ __cmd_probe(int argc, const char **argv) "perf probe [] --add 'PROBEDEF' [--add 'PROBEDEF' ...]", "perf probe [] --del '[GROUP:]EVENT' ...", "perf probe --list [GROUP:]EVENT ...", -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT "perf probe [] --line 'LINEDESC'", "perf probe [] --vars 'PROBEPOINT'", #endif @@ -545,7 +545,7 @@ __cmd_probe(int argc, const char **argv) "\t\tFUNC:\tFunction name\n" "\t\tOFF:\tOffset from function entry (in byte)\n" "\t\t%return:\tPut the probe at function return\n" -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT "\t\tSRC:\tSource code path\n" "\t\tRL:\tRelative line number from function entry.\n" "\t\tAL:\tAbsolute line number in file.\n" @@ -612,7 +612,7 @@ __cmd_probe(int argc, const char **argv) set_option_flag(options, 'd', "del", PARSE_OPT_EXCLUSIVE); set_option_flag(options, 'D', "definition", PARSE_OPT_EXCLUSIVE); set_option_flag(options, 'l', "list", PARSE_OPT_EXCLUSIVE); -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT set_option_flag(options, 'L', "line", PARSE_OPT_EXCLUSIVE); set_option_flag(options, 'V', "vars", PARSE_OPT_EXCLUSIVE); #else @@ -694,7 +694,7 @@ __cmd_probe(int argc, const char **argv) if (ret < 0) pr_err_with_code(" Error: Failed to show functions.", ret); return ret; -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT case 'L': ret = show_line_range(¶ms->line_range, params->target, params->nsi, params->uprobes); diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 2251aa61ea53..45304ee5537c 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -455,7 +455,7 @@ static int report__setup_sample_type(struct report *rep) if (!(evlist__combined_branch_type(session->evlist) & PERF_SAMPLE_BRANCH_ANY)) rep->nonany_branch_mode = true; -#if !defined(HAVE_LIBUNWIND_SUPPORT) && !defined(HAVE_DWARF_SUPPORT) +#if !defined(HAVE_LIBUNWIND_SUPPORT) && !defined(HAVE_LIBDW_SUPPORT) if (dwarf_callchain_users) { ui__warning("Please install libunwind or libdw " "development packages during the perf build.\n"); @@ -1705,7 +1705,7 @@ repeat: report.data_type = true; annotate_opts.annotate_src = false; -#ifndef HAVE_DWARF_SUPPORT +#ifndef HAVE_LIBDW_SUPPORT pr_err("Error: Data type profiling is disabled due to missing DWARF support\n"); goto error; #endif diff --git a/tools/perf/util/annotate-data.h b/tools/perf/util/annotate-data.h index 8ac0fd94a0ba..98c80b2268dd 100644 --- a/tools/perf/util/annotate-data.h +++ b/tools/perf/util/annotate-data.h @@ -9,7 +9,7 @@ #include "dwarf-regs.h" #include "annotate.h" -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT #include "debuginfo.h" #endif @@ -165,7 +165,7 @@ struct annotated_data_stat { }; extern struct annotated_data_stat ann_data_stat; -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT /* * Type information in a register, valid when @ok is true. * The @caller_saved registers are invalidated after a function call. @@ -244,7 +244,7 @@ bool get_global_var_info(struct data_loc_info *dloc, u64 addr, const char **var_name, int *var_offset); void pr_debug_type_name(Dwarf_Die *die, enum type_state_kind kind); -#else /* HAVE_DWARF_SUPPORT */ +#else /* HAVE_LIBDW_SUPPORT */ static inline struct annotated_data_type * find_data_type(struct data_loc_info *dloc __maybe_unused) @@ -276,7 +276,7 @@ static inline int hist_entry__annotate_data_tty(struct hist_entry *he __maybe_un return -1; } -#endif /* HAVE_DWARF_SUPPORT */ +#endif /* HAVE_LIBDW_SUPPORT */ #ifdef HAVE_SLANG_SUPPORT int hist_entry__annotate_data_tui(struct hist_entry *he, struct evsel *evsel, diff --git a/tools/perf/util/debuginfo.h b/tools/perf/util/debuginfo.h index ad6422c3f8ca..a52d69932815 100644 --- a/tools/perf/util/debuginfo.h +++ b/tools/perf/util/debuginfo.h @@ -5,7 +5,7 @@ #include #include -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT #include "dwarf-aux.h" @@ -25,7 +25,7 @@ void debuginfo__delete(struct debuginfo *dbg); int debuginfo__get_text_offset(struct debuginfo *dbg, Dwarf_Addr *offs, bool adjust_offset); -#else /* HAVE_DWARF_SUPPORT */ +#else /* HAVE_LIBDW_SUPPORT */ /* dummy debug information structure */ struct debuginfo { @@ -49,7 +49,7 @@ static inline int debuginfo__get_text_offset(struct debuginfo *dbg __maybe_unuse return -EINVAL; } -#endif /* HAVE_DWARF_SUPPORT */ +#endif /* HAVE_LIBDW_SUPPORT */ #ifdef HAVE_DEBUGINFOD_SUPPORT int get_source_from_debuginfod(const char *raw_path, const char *sbuild_id, diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c index 2c8063660f2e..aef06a36bf40 100644 --- a/tools/perf/util/disasm.c +++ b/tools/perf/util/disasm.c @@ -151,14 +151,14 @@ static struct arch architectures[] = { .memory_ref_char = '(', .imm_char = '$', }, -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT .update_insn_state = update_insn_state_x86, #endif }, { .name = "powerpc", .init = powerpc__annotate_init, -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT .update_insn_state = update_insn_state_powerpc, #endif }, diff --git a/tools/perf/util/disasm.h b/tools/perf/util/disasm.h index f56beedeb9da..486c269b29ba 100644 --- a/tools/perf/util/disasm.h +++ b/tools/perf/util/disasm.h @@ -4,7 +4,7 @@ #include "map_symbol.h" -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT #include "dwarf-aux.h" #endif @@ -39,7 +39,7 @@ struct arch { char memory_ref_char; char imm_char; } objdump; -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT void (*update_insn_state)(struct type_state *state, struct data_loc_info *dloc, Dwarf_Die *cu_die, struct disasm_line *dl); diff --git a/tools/perf/util/genelf.c b/tools/perf/util/genelf.c index c8f6bee1fa61..cdce7f173d00 100644 --- a/tools/perf/util/genelf.c +++ b/tools/perf/util/genelf.c @@ -16,7 +16,7 @@ #include #include #include -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT #include #endif @@ -499,7 +499,7 @@ jit_write_elf(int fd, uint64_t load_addr, const char *sym, shdr->sh_size = sizeof(bnote); shdr->sh_entsize = 0; -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT if (debug && nr_debug_entries) { retval = jit_add_debug_info(e, load_addr, debug, nr_debug_entries); if (retval) diff --git a/tools/perf/util/genelf.h b/tools/perf/util/genelf.h index 4e2e4f40e134..9f0b875d6548 100644 --- a/tools/perf/util/genelf.h +++ b/tools/perf/util/genelf.h @@ -8,7 +8,7 @@ int jit_write_elf(int fd, uint64_t code_addr, const char *sym, const void *code, int csize, void *debug, int nr_debug_entries, void *unwinding, uint64_t unwinding_header_size, uint64_t unwinding_size); -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT /* genelf_debug.c */ int jit_add_debug_info(Elf *e, uint64_t code_addr, void *debug, int nr_debug_entries); #endif diff --git a/tools/perf/util/include/dwarf-regs.h b/tools/perf/util/include/dwarf-regs.h index 75b28dcc8317..29a7d0546b82 100644 --- a/tools/perf/util/include/dwarf-regs.h +++ b/tools/perf/util/include/dwarf-regs.h @@ -6,7 +6,7 @@ #define DWARF_REG_PC 0xd3af9c /* random number */ #define DWARF_REG_FB 0xd3affb /* random number */ -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT const char *get_arch_regstr(unsigned int n); /* * get_dwarf_regstr - Returns ftrace register string from DWARF regnum @@ -23,7 +23,7 @@ int get_arch_regnum(const char *name); */ int get_dwarf_regnum(const char *name, unsigned int machine); -#else /* HAVE_DWARF_SUPPORT */ +#else /* HAVE_LIBDW_SUPPORT */ static inline int get_dwarf_regnum(const char *name __maybe_unused, unsigned int machine __maybe_unused) @@ -32,7 +32,7 @@ static inline int get_dwarf_regnum(const char *name __maybe_unused, } #endif -#if !defined(__powerpc__) || !defined(HAVE_DWARF_SUPPORT) +#if !defined(__powerpc__) || !defined(HAVE_LIBDW_SUPPORT) static inline void get_powerpc_regs(u32 raw_insn __maybe_unused, int is_source __maybe_unused, struct annotated_op_loc *op_loc __maybe_unused) { diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 2c8d94d09e86..a580aa2cd512 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -345,7 +345,7 @@ elf_err: return mod_name; } -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT static int kernel_get_module_dso(const char *module, struct dso **pdso) { @@ -1253,7 +1253,7 @@ out: return ret; } -#else /* !HAVE_DWARF_SUPPORT */ +#else /* !HAVE_LIBDW_SUPPORT */ static void debuginfo_cache__exit(void) { diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h index 5ced3b058fd8..dfcf8cdd9e8d 100644 --- a/tools/perf/util/probe-finder.h +++ b/tools/perf/util/probe-finder.h @@ -21,7 +21,7 @@ static inline int is_c_varname(const char *name) return isalpha(name[0]) || name[0] == '_'; } -#ifdef HAVE_DWARF_SUPPORT +#ifdef HAVE_LIBDW_SUPPORT #include "dwarf-aux.h" #include "debuginfo.h" @@ -102,6 +102,6 @@ struct line_finder { int found; }; -#endif /* HAVE_DWARF_SUPPORT */ +#endif /* HAVE_LIBDW_SUPPORT */ #endif /*_PROBE_FINDER_H */ -- cgit v1.2.3 From 5455d89bf3da85176606ff861f4178f6bea648ba Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 16 Oct 2024 17:13:54 -0700 Subject: perf build: Rename CONFIG_DWARF to CONFIG_LIBDW In Makefile.config for unwinding the name dwarf implies either libunwind or libdw. Make it clearer that CONFIG_DWARF is really just defined when libdw is present by renaming to CONFIG_LIBDW. Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-riscv@lists.infradead.org Cc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.org Link: https://lore.kernel.org/r/20241017001354.56973-12-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/Makefile.config | 2 +- tools/perf/arch/arm/util/Build | 2 +- tools/perf/arch/arm64/util/Build | 2 +- tools/perf/arch/csky/util/Build | 2 +- tools/perf/arch/loongarch/util/Build | 2 +- tools/perf/arch/mips/util/Build | 2 +- tools/perf/arch/powerpc/util/Build | 4 ++-- tools/perf/arch/riscv/util/Build | 2 +- tools/perf/arch/s390/util/Build | 2 +- tools/perf/arch/sh/util/Build | 2 +- tools/perf/arch/sparc/util/Build | 2 +- tools/perf/arch/x86/util/Build | 2 +- tools/perf/arch/xtensa/util/Build | 2 +- tools/perf/util/Build | 12 ++++++------ 14 files changed, 20 insertions(+), 20 deletions(-) (limited to 'tools') diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index d0ad2919983c..b93ed2b7623f 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -562,7 +562,7 @@ ifndef NO_LIBELF CFLAGS += -DHAVE_LIBDW_SUPPORT $(LIBDW_CFLAGS) LDFLAGS += $(LIBDW_LDFLAGS) EXTLIBS += ${DWARFLIBS} - $(call detected,CONFIG_DWARF) + $(call detected,CONFIG_LIBDW) endif # PERF_HAVE_DWARF_REGS endif # NO_LIBDW diff --git a/tools/perf/arch/arm/util/Build b/tools/perf/arch/arm/util/Build index e6dd7cd79ebd..e06fea1ea8ff 100644 --- a/tools/perf/arch/arm/util/Build +++ b/tools/perf/arch/arm/util/Build @@ -1,6 +1,6 @@ perf-util-y += perf_regs.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/arch/arm64/util/Build b/tools/perf/arch/arm64/util/Build index 343ef7589a77..4387a6d6a6c3 100644 --- a/tools/perf/arch/arm64/util/Build +++ b/tools/perf/arch/arm64/util/Build @@ -4,7 +4,7 @@ perf-util-y += perf_regs.o perf-util-y += tsc.o perf-util-y += pmu.o perf-util-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/arch/csky/util/Build b/tools/perf/arch/csky/util/Build index 99d83f41bf43..1325310cab6a 100644 --- a/tools/perf/arch/csky/util/Build +++ b/tools/perf/arch/csky/util/Build @@ -1,4 +1,4 @@ perf-util-y += perf_regs.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/arch/loongarch/util/Build b/tools/perf/arch/loongarch/util/Build index b6b97de48233..06ff95394921 100644 --- a/tools/perf/arch/loongarch/util/Build +++ b/tools/perf/arch/loongarch/util/Build @@ -1,7 +1,7 @@ perf-util-y += header.o perf-util-y += perf_regs.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o perf-util-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o diff --git a/tools/perf/arch/mips/util/Build b/tools/perf/arch/mips/util/Build index e4644f1e68a0..b328109fc16c 100644 --- a/tools/perf/arch/mips/util/Build +++ b/tools/perf/arch/mips/util/Build @@ -1,3 +1,3 @@ perf-util-y += perf_regs.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o diff --git a/tools/perf/arch/powerpc/util/Build b/tools/perf/arch/powerpc/util/Build index 6c588ecdf3bd..3d979480a188 100644 --- a/tools/perf/arch/powerpc/util/Build +++ b/tools/perf/arch/powerpc/util/Build @@ -7,8 +7,8 @@ perf-util-y += sym-handling.o perf-util-y += evsel.o perf-util-y += event.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o -perf-util-$(CONFIG_DWARF) += skip-callchain-idx.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += skip-callchain-idx.o perf-util-$(CONFIG_LIBUNWIND) += unwind-libunwind.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/arch/riscv/util/Build b/tools/perf/arch/riscv/util/Build index f865cb0489ec..8f93091b8345 100644 --- a/tools/perf/arch/riscv/util/Build +++ b/tools/perf/arch/riscv/util/Build @@ -2,5 +2,5 @@ perf-util-y += perf_regs.o perf-util-y += header.o perf-util-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/arch/s390/util/Build b/tools/perf/arch/s390/util/Build index 1ac830030ff3..787410f99bb3 100644 --- a/tools/perf/arch/s390/util/Build +++ b/tools/perf/arch/s390/util/Build @@ -2,7 +2,7 @@ perf-util-y += header.o perf-util-$(CONFIG_LIBTRACEEVENT) += kvm-stat.o perf-util-y += perf_regs.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o perf-util-y += machine.o diff --git a/tools/perf/arch/sh/util/Build b/tools/perf/arch/sh/util/Build index 32f44fc4ab98..2337a0b710a2 100644 --- a/tools/perf/arch/sh/util/Build +++ b/tools/perf/arch/sh/util/Build @@ -1 +1 @@ -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o diff --git a/tools/perf/arch/sparc/util/Build b/tools/perf/arch/sparc/util/Build index 32f44fc4ab98..2337a0b710a2 100644 --- a/tools/perf/arch/sparc/util/Build +++ b/tools/perf/arch/sparc/util/Build @@ -1 +1 @@ -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o diff --git a/tools/perf/arch/x86/util/Build b/tools/perf/arch/x86/util/Build index 2607ed5c4296..9705cda4f240 100644 --- a/tools/perf/arch/x86/util/Build +++ b/tools/perf/arch/x86/util/Build @@ -12,7 +12,7 @@ perf-util-y += evsel.o perf-util-y += iostat.o perf-util-y += env.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_BPF_PROLOGUE) += dwarf-regs.o perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o diff --git a/tools/perf/arch/xtensa/util/Build b/tools/perf/arch/xtensa/util/Build index e813e618954b..2d1a48696ad9 100644 --- a/tools/perf/arch/xtensa/util/Build +++ b/tools/perf/arch/xtensa/util/Build @@ -1 +1 @@ -perf-$(CONFIG_DWARF) += dwarf-regs.o +perf-$(CONFIG_LIBDW) += dwarf-regs.o diff --git a/tools/perf/util/Build b/tools/perf/util/Build index fa508e113dd0..1eedead5f2f2 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -200,11 +200,11 @@ ifndef CONFIG_SETNS perf-util-y += setns.o endif -perf-util-$(CONFIG_DWARF) += probe-finder.o -perf-util-$(CONFIG_DWARF) += dwarf-aux.o -perf-util-$(CONFIG_DWARF) += dwarf-regs.o -perf-util-$(CONFIG_DWARF) += debuginfo.o -perf-util-$(CONFIG_DWARF) += annotate-data.o +perf-util-$(CONFIG_LIBDW) += probe-finder.o +perf-util-$(CONFIG_LIBDW) += dwarf-aux.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += debuginfo.o +perf-util-$(CONFIG_LIBDW) += annotate-data.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind-local.o @@ -235,7 +235,7 @@ perf-util-$(CONFIG_LIBLLVM) += llvm-c-helpers.o ifdef CONFIG_JITDUMP perf-util-$(CONFIG_LIBELF) += jitdump.o perf-util-$(CONFIG_LIBELF) += genelf.o -perf-util-$(CONFIG_DWARF) += genelf_debug.o +perf-util-$(CONFIG_LIBDW) += genelf_debug.o endif perf-util-y += perf-hooks.o -- cgit v1.2.3 From e2cb1db7daf8b7863aeec07bb574d3fae54518e6 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 18 Oct 2024 13:43:06 -0700 Subject: perf test: Update all metrics test like metricgroups test Like in the metricgroup tests, it should check the permission first and then skip relevant failures accordingly. Also it needs to try again with the system wide flag properly. On the second round, check if the result has the metric name because other failure cases are checked in the first round already. Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20241018204306.741972-1-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/stat_all_metrics.sh | 87 ++++++++++++++++++++++-------- 1 file changed, 66 insertions(+), 21 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/stat_all_metrics.sh b/tools/perf/tests/shell/stat_all_metrics.sh index 54774525e18a..73e9347e88a9 100755 --- a/tools/perf/tests/shell/stat_all_metrics.sh +++ b/tools/perf/tests/shell/stat_all_metrics.sh @@ -2,42 +2,87 @@ # perf all metrics test # SPDX-License-Identifier: GPL-2.0 +ParanoidAndNotRoot() +{ + [ "$(id -u)" != 0 ] && [ "$(cat /proc/sys/kernel/perf_event_paranoid)" -gt $1 ] +} + +system_wide_flag="-a" +if ParanoidAndNotRoot 0 +then + system_wide_flag="" +fi + err=0 for m in $(perf list --raw-dump metrics); do echo "Testing $m" - result=$(perf stat -M "$m" true 2>&1) - if [[ "$result" =~ ${m:0:50} ]] || [[ "$result" =~ "" ]] + result=$(perf stat -M "$m" $system_wide_flag -- sleep 0.01 2>&1) + result_err=$? + if [[ $result_err -gt 0 ]] then - continue + if [[ "$result" =~ \ + "Access to performance monitoring and observability operations is limited" ]] + then + echo "Permission failure" + echo $result + if [[ $err -eq 0 ]] + then + err=2 # Skip + fi + continue + elif [[ "$result" =~ "in per-thread mode, enable system wide" ]] + then + echo "Permissions - need system wide mode" + echo $result + if [[ $err -eq 0 ]] + then + err=2 # Skip + fi + continue + elif [[ "$result" =~ "" ]] + then + echo "Not supported events" + echo $result + if [[ $err -eq 0 ]] + then + err=2 # Skip + fi + continue + elif [[ "$result" =~ "FP_ARITH" || "$result" =~ "AMX" ]] + then + echo "FP issues" + echo $result + if [[ $err -eq 0 ]] + then + err=2 # Skip + fi + continue + elif [[ "$result" =~ "PMM" ]] + then + echo "Optane memory issues" + echo $result + if [[ $err -eq 0 ]] + then + err=2 # Skip + fi + continue + fi fi - # Failed so try system wide. - result=$(perf stat -M "$m" -a sleep 0.01 2>&1) + if [[ "$result" =~ ${m:0:50} ]] then continue fi - # Failed again, possibly the workload was too small so retry with something - # longer. - result=$(perf stat -M "$m" perf bench internals synthesize 2>&1) + + # Failed, possibly the workload was too small so retry with something longer. + result=$(perf stat -M "$m" $system_wide_flag -- perf bench internals synthesize 2>&1) if [[ "$result" =~ ${m:0:50} ]] then continue fi echo "Metric '$m' not printed in:" echo "$result" - if [[ "$err" != "1" ]] - then - err=2 - if [[ "$result" =~ "FP_ARITH" || "$result" =~ "AMX" ]] - then - echo "Skip, not fail, for FP issues" - elif [[ "$result" =~ "PMM" ]] - then - echo "Skip, not fail, for Optane memory issues" - else - err=1 - fi - fi + err=1 done exit "$err" -- cgit v1.2.3 From 21677f653f1a6b9a3796d3ed7406722d289ef781 Mon Sep 17 00:00:00 2001 From: Thomas Richter Date: Fri, 18 Oct 2024 10:17:32 +0200 Subject: perf test: Fix perf test case 84 on s390 Perf test case 84 'perf pipe recording and injection test' sometime fails on s390, especially on z/VM virtual machines. This is caused by a very short run time of workload # perf test -w noploop which runs for 1 second. Occasionally this is not long enough and the perf report has no samples for symbol noploop. Fix this and enlarge the runtime for the perf work load to 3 seconds. This ensures the symbol noploop is always present. Since only s390 is affected, make this loop architecture dependend. Output before: Inject -b build-ids test [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.195 MB - ] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.277 MB - ] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.195 MB - ] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.160 MB /tmp/perf.data.ELzRdq (4031 samples) ] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.195 MB - ] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.195 MB - ] Inject -b build-ids test [Success] Inject --buildid-all build-ids test [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.195 MB - ] [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.014 MB - ] Inject --buildid-all build-ids test [Failed - cannot find noploop function in pipe #2] Output after: Successful execution for over 10 times in a loop. Signed-off-by: Thomas Richter Reviewed-by: Sumanth Korikkar Reviewed-by: Ian Rogers Suggested-by: Namhyung Kim Cc: agordeev@linux.ibm.com Cc: gor@linux.ibm.com Cc: hca@linux.ibm.com Link: https://lore.kernel.org/r/20241018081732.1391060-1-tmricht@linux.ibm.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/pipe_test.sh | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/tests/shell/pipe_test.sh b/tools/perf/tests/shell/pipe_test.sh index d4c8005ce9b9..e459aa99a951 100755 --- a/tools/perf/tests/shell/pipe_test.sh +++ b/tools/perf/tests/shell/pipe_test.sh @@ -13,6 +13,7 @@ skip_test_missing_symbol ${sym} data=$(mktemp /tmp/perf.data.XXXXXX) data2=$(mktemp /tmp/perf.data2.XXXXXX) prog="perf test -w noploop" +[ "$(uname -m)" = "s390x" ] && prog="$prog 3" err=0 set -e -- cgit v1.2.3 From f101a8e345c22a588132fda52055a16ec54e7621 Mon Sep 17 00:00:00 2001 From: Sandipan Das Date: Fri, 18 Oct 2024 15:01:03 +0530 Subject: perf vendor events amd: Add Zen 5 data fabric events Add data fabric events taken from Section 2.1.16.2 "Performance Measurement" in the Processor Programming Reference (PPR) for AMD Family 1Ah Model 02h Revision C1 Processors document available at the link below. This constitutes events which capture the flow of data beats at various links and interfaces in the data fabric. Link: https://bugzilla.kernel.org/attachment.cgi?id=307010 Signed-off-by: Sandipan Das Reviewed-by: Ian Rogers Cc: ananth.narayan@amd.com Cc: ravi.bangoria@amd.com Cc: eranian@google.com Link: https://lore.kernel.org/r/198049e27366f3980e4991b95cec5eaac6d31d75.1729242778.git.sandipan.das@amd.com Signed-off-by: Namhyung Kim --- .../pmu-events/arch/x86/amdzen5/data-fabric.json | 1634 ++++++++++++++++++++ 1 file changed, 1634 insertions(+) create mode 100644 tools/perf/pmu-events/arch/x86/amdzen5/data-fabric.json (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/x86/amdzen5/data-fabric.json b/tools/perf/pmu-events/arch/x86/amdzen5/data-fabric.json new file mode 100644 index 000000000000..fa06569d881d --- /dev/null +++ b/tools/perf/pmu-events/arch/x86/amdzen5/data-fabric.json @@ -0,0 +1,1634 @@ +[ + { + "EventName": "local_or_remote_socket_read_data_beats_dram_0", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 0.", + "EventCode": "0x1f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_1", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 1.", + "EventCode": "0x5f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_2", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 2.", + "EventCode": "0x9f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_3", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 3.", + "EventCode": "0xdf", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_4", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 4.", + "EventCode": "0x11f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_5", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 5.", + "EventCode": "0x15f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_6", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 6.", + "EventCode": "0x19f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_7", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 7.", + "EventCode": "0x1df", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_8", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 8.", + "EventCode": "0x21f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_9", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 9.", + "EventCode": "0x25f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_10", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 10.", + "EventCode": "0x29f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_read_data_beats_dram_11", + "PublicDescription": "Read data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 11.", + "EventCode": "0x2df", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_0", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 0.", + "EventCode": "0x1f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_1", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 1.", + "EventCode": "0x5f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_2", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 2.", + "EventCode": "0x9f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_3", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 3.", + "EventCode": "0xdf", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_4", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 4.", + "EventCode": "0x11f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_5", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 5.", + "EventCode": "0x15f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_6", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 6.", + "EventCode": "0x19f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_7", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 7.", + "EventCode": "0x1df", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_8", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 8.", + "EventCode": "0x21f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_9", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 9.", + "EventCode": "0x25f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_10", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 10.", + "EventCode": "0x29f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_write_data_beats_dram_11", + "PublicDescription": "Write data beats (64 bytes) for transactions between local socket and DRAM Channel 11.", + "EventCode": "0x2df", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_0", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 0.", + "EventCode": "0x1f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_1", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 1.", + "EventCode": "0x5f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_2", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 2.", + "EventCode": "0x9f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_3", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 3.", + "EventCode": "0xdf", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_4", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 4.", + "EventCode": "0x11f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_5", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 5.", + "EventCode": "0x15f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_6", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 6.", + "EventCode": "0x19f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_7", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 7.", + "EventCode": "0x1df", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_8", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 8.", + "EventCode": "0x21f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_9", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 9.", + "EventCode": "0x25f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_10", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 10.", + "EventCode": "0x29f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_write_data_beats_dram_11", + "PublicDescription": "Write data beats (64 bytes) for transactions between remote socket and DRAM Channel 11.", + "EventCode": "0x2df", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_0", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 0.", + "EventCode": "0x1f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_1", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 1.", + "EventCode": "0x5f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_2", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 2.", + "EventCode": "0x9f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_3", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 3.", + "EventCode": "0xdf", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_4", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 4.", + "EventCode": "0x11f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_5", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 5.", + "EventCode": "0x15f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_6", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 6.", + "EventCode": "0x19f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_7", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 7.", + "EventCode": "0x1df", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_8", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 8.", + "EventCode": "0x21f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_9", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 9.", + "EventCode": "0x25f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_10", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 10.", + "EventCode": "0x29f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_write_data_beats_dram_11", + "PublicDescription": "Write data beats (64 bytes) for transactions between local or remote socket and DRAM Channel 11.", + "EventCode": "0x2df", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_read_data_beats_io_0", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local socket and IO Root Complex 0.", + "EventCode": "0x81f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_read_data_beats_io_1", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local socket and IO Root Complex 1.", + "EventCode": "0x85f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_read_data_beats_io_2", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local socket and IO Root Complex 2.", + "EventCode": "0x89f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_read_data_beats_io_3", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local socket and IO Root Complex 3.", + "EventCode": "0x8df", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_read_data_beats_io_4", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local socket and IO Root Complex 4.", + "EventCode": "0x91f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_read_data_beats_io_5", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local socket and IO Root Complex 5.", + "EventCode": "0x95f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_read_data_beats_io_6", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local socket and IO Root Complex 6.", + "EventCode": "0x99f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_read_data_beats_io_7", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local socket and IO Root Complex 7.", + "EventCode": "0x9df", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_write_data_beats_io_0", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local socket and IO Root Complex 0.", + "EventCode": "0x81f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_write_data_beats_io_1", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local socket and IO Root Complex 1.", + "EventCode": "0x85f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_write_data_beats_io_2", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local socket and IO Root Complex 2.", + "EventCode": "0x89f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_write_data_beats_io_3", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local socket and IO Root Complex 3.", + "EventCode": "0x8df", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_write_data_beats_io_4", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local socket and IO Root Complex 4.", + "EventCode": "0x91f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_write_data_beats_io_5", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local socket and IO Root Complex 5.", + "EventCode": "0x95f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_write_data_beats_io_6", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local socket and IO Root Complex 6.", + "EventCode": "0x99f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_upstream_write_data_beats_io_7", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local socket and IO Root Complex 7.", + "EventCode": "0x9df", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_read_data_beats_io_0", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between remote socket and IO Root Complex 0.", + "EventCode": "0x81f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_read_data_beats_io_1", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between remote socket and IO Root Complex 1.", + "EventCode": "0x85f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_read_data_beats_io_2", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between remote socket and IO Root Complex 2.", + "EventCode": "0x89f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_read_data_beats_io_3", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between remote socket and IO Root Complex 3.", + "EventCode": "0x8df", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_read_data_beats_io_4", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between remote socket and IO Root Complex 4.", + "EventCode": "0x91f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_read_data_beats_io_5", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between remote socket and IO Root Complex 5.", + "EventCode": "0x95f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_read_data_beats_io_6", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between remote socket and IO Root Complex 6.", + "EventCode": "0x99f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_read_data_beats_io_7", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between remote socket and IO Root Complex 7.", + "EventCode": "0x9df", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_write_data_beats_io_0", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between remote socket and IO Root Complex 0.", + "EventCode": "0x81f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_write_data_beats_io_1", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between remote socket and IO Root Complex 1.", + "EventCode": "0x85f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_write_data_beats_io_2", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between remote socket and IO Root Complex 2.", + "EventCode": "0x89f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_write_data_beats_io_3", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between remote socket and IO Root Complex 3.", + "EventCode": "0x8df", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_write_data_beats_io_4", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between remote socket and IO Root Complex 4.", + "EventCode": "0x91f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_write_data_beats_io_5", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between remote socket and IO Root Complex 5.", + "EventCode": "0x95f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_write_data_beats_io_6", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between remote socket and IO Root Complex 6.", + "EventCode": "0x99f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_upstream_write_data_beats_io_7", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between remote socket and IO Root Complex 7.", + "EventCode": "0x9df", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_read_data_beats_io_0", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 0.", + "EventCode": "0x81f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_read_data_beats_io_1", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 1.", + "EventCode": "0x85f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_read_data_beats_io_2", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 2.", + "EventCode": "0x89f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_read_data_beats_io_3", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 3.", + "EventCode": "0x8df", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_read_data_beats_io_4", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 4.", + "EventCode": "0x91f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_read_data_beats_io_5", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 5.", + "EventCode": "0x95f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_read_data_beats_io_6", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 6.", + "EventCode": "0x99f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_read_data_beats_io_7", + "PublicDescription": "Upstream DMA read data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 7.", + "EventCode": "0x9df", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_write_data_beats_io_0", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 0.", + "EventCode": "0x81f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_write_data_beats_io_1", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 1.", + "EventCode": "0x85f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_write_data_beats_io_2", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 2.", + "EventCode": "0x89f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_write_data_beats_io_3", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 3.", + "EventCode": "0x8df", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_write_data_beats_io_4", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 4.", + "EventCode": "0x91f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_write_data_beats_io_5", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 5.", + "EventCode": "0x95f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_write_data_beats_io_6", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 6.", + "EventCode": "0x99f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_upstream_write_data_beats_io_7", + "PublicDescription": "Upstream DMA write data beats (64 bytes) for transactions between local or remote socket and IO Root Complex 7.", + "EventCode": "0x9df", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_0", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 0.", + "EventCode": "0x41e", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_1", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 1.", + "EventCode": "0x45e", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_2", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 2.", + "EventCode": "0x49e", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_3", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 3.", + "EventCode": "0x4de", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_4", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 4.", + "EventCode": "0x51e", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_5", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 5.", + "EventCode": "0x55e", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_6", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 6.", + "EventCode": "0x59e", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_7", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 7.", + "EventCode": "0x5de", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_8", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 8.", + "EventCode": "0x41f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_9", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 9.", + "EventCode": "0x45f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_10", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 10.", + "EventCode": "0x49f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_11", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 11.", + "EventCode": "0x4df", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_12", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 12.", + "EventCode": "0x51f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_13", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 13.", + "EventCode": "0x55f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_14", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 14.", + "EventCode": "0x59f", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_cfi_15", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local socket and Core-to-Fabric Interface 15.", + "EventCode": "0x5df", + "UMask": "0x7fe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_0", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 0.", + "EventCode": "0x41e", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_1", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 1.", + "EventCode": "0x45e", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_2", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 2.", + "EventCode": "0x49e", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_3", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 3.", + "EventCode": "0x4de", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_4", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 4.", + "EventCode": "0x51e", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_5", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 5.", + "EventCode": "0x55e", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_6", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 6.", + "EventCode": "0x59e", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_7", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 7.", + "EventCode": "0x5de", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_8", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 8.", + "EventCode": "0x41f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_9", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 9.", + "EventCode": "0x45f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_10", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 10.", + "EventCode": "0x49f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_11", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 11.", + "EventCode": "0x4df", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_12", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 12.", + "EventCode": "0x51f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_13", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 13.", + "EventCode": "0x55f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_14", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 14.", + "EventCode": "0x59f", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_cfi_15", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and Core-to-Fabric Interface 15.", + "EventCode": "0x5df", + "UMask": "0x7ff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_0", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 0.", + "EventCode": "0x41e", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_1", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 1.", + "EventCode": "0x45e", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_2", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 2.", + "EventCode": "0x49e", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_3", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 3.", + "EventCode": "0x4de", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_4", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 4.", + "EventCode": "0x51e", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_5", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 5.", + "EventCode": "0x55e", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_6", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 6.", + "EventCode": "0x59e", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_7", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 7.", + "EventCode": "0x5de", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_8", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 8.", + "EventCode": "0x41f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_9", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 9.", + "EventCode": "0x45f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_10", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 10.", + "EventCode": "0x49f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_11", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 11.", + "EventCode": "0x4df", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_12", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 12.", + "EventCode": "0x51f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_13", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 13.", + "EventCode": "0x55f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_14", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 14.", + "EventCode": "0x59f", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_inbound_data_beats_cfi_15", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between remote socket and Core-to-Fabric Interface 15.", + "EventCode": "0x5df", + "UMask": "0xbfe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_0", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 0.", + "EventCode": "0x41e", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_1", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 1.", + "EventCode": "0x45e", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_2", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 2.", + "EventCode": "0x49e", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_3", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 3.", + "EventCode": "0x4de", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_4", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 4.", + "EventCode": "0x51e", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_5", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 5.", + "EventCode": "0x55e", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_6", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 6.", + "EventCode": "0x59e", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_7", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 7.", + "EventCode": "0x5de", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_8", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 8.", + "EventCode": "0x41f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_9", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 9.", + "EventCode": "0x45f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_10", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 10.", + "EventCode": "0x49f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_11", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 11.", + "EventCode": "0x4df", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_12", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 12.", + "EventCode": "0x51f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_13", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 13.", + "EventCode": "0x55f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_14", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 14.", + "EventCode": "0x59f", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "remote_socket_outbound_data_beats_cfi_15", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between remote socket and Core-to-Fabric Interface 15.", + "EventCode": "0x5df", + "UMask": "0xbff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_0", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 0.", + "EventCode": "0x41e", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_1", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 1.", + "EventCode": "0x45e", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_2", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 2.", + "EventCode": "0x49e", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_3", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 3.", + "EventCode": "0x4de", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_4", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 4.", + "EventCode": "0x51e", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_5", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 5.", + "EventCode": "0x55e", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_6", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 6.", + "EventCode": "0x59e", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_7", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 7.", + "EventCode": "0x5de", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_8", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 8.", + "EventCode": "0x41f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_9", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 9.", + "EventCode": "0x45f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_10", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 10.", + "EventCode": "0x49f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_11", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 11.", + "EventCode": "0x4df", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_12", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 12.", + "EventCode": "0x51f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_13", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 13.", + "EventCode": "0x55f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_14", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 14.", + "EventCode": "0x59f", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_inbound_data_beats_cfi_15", + "PublicDescription": "Inbound data beats (32 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 15.", + "EventCode": "0x5df", + "UMask": "0xffe", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_0", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 0.", + "EventCode": "0x41e", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_1", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 1.", + "EventCode": "0x45e", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_2", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 2.", + "EventCode": "0x49e", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_3", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 3.", + "EventCode": "0x4de", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_4", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 4.", + "EventCode": "0x51e", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_5", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 5.", + "EventCode": "0x55e", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_6", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 6.", + "EventCode": "0x59e", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_7", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 7.", + "EventCode": "0x5de", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_8", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 8.", + "EventCode": "0x41f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_9", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 9.", + "EventCode": "0x45f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_10", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 10.", + "EventCode": "0x49f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_11", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 11.", + "EventCode": "0x4df", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_12", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 12.", + "EventCode": "0x51f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_13", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 13.", + "EventCode": "0x55f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_14", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 14.", + "EventCode": "0x59f", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_or_remote_socket_outbound_data_beats_cfi_15", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local or remote socket and Core-to-Fabric Interface 15.", + "EventCode": "0x5df", + "UMask": "0xfff", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_link_0", + "PublicDescription": "Inbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 0.", + "EventCode": "0xd5f", + "UMask": "0xf3f", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_link_1", + "PublicDescription": "Inbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 1.", + "EventCode": "0xd9f", + "UMask": "0xf3f", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_link_2", + "PublicDescription": "Inbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 2.", + "EventCode": "0xddf", + "UMask": "0xf3f", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_link_3", + "PublicDescription": "Inbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 3.", + "EventCode": "0xe1f", + "UMask": "0xf3f", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_link_4", + "PublicDescription": "Inbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 4.", + "EventCode": "0xe5f", + "UMask": "0xf3f", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_inbound_data_beats_link_5", + "PublicDescription": "Inbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 5.", + "EventCode": "0xe9f", + "UMask": "0xf3f", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_link_0", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 0.", + "EventCode": "0xd5f", + "UMask": "0xf3e", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_link_1", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 1.", + "EventCode": "0xd9f", + "UMask": "0xf3e", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_link_2", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 2.", + "EventCode": "0xddf", + "UMask": "0xf3e", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_link_3", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 3.", + "EventCode": "0xe1f", + "UMask": "0xf3e", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_link_4", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 4.", + "EventCode": "0xe5f", + "UMask": "0xf3e", + "PerPkg": "1", + "Unit": "DFPMC" + }, + { + "EventName": "local_socket_outbound_data_beats_link_5", + "PublicDescription": "Outbound data beats (64 bytes) for transactions between local socket and remote socket over Cross-socket Link 5.", + "EventCode": "0xe9f", + "UMask": "0xf3e", + "PerPkg": "1", + "Unit": "DFPMC" + } +] -- cgit v1.2.3 From 17aedce6e0ff80d5e210b7a773738877336f1ca5 Mon Sep 17 00:00:00 2001 From: Sandipan Das Date: Fri, 18 Oct 2024 15:01:04 +0530 Subject: perf vendor events amd: Add Zen 5 data fabric metrics Add data fabric metrics taken from Section 2.1.16.2 "Performance Measurement" in the Processor Programming Reference (PPR) for AMD Family 1Ah Model 02h Revision C1 Processors document available at the link below. The recommended metrics are sourced from Table 28 "Guidance for Common Performance Statistics with Complex Event Selects". They capture data bandwidth for various links and interfaces in the data fabric. Link: https://bugzilla.kernel.org/attachment.cgi?id=307010 Signed-off-by: Sandipan Das Reviewed-by: Ian Rogers Cc: ananth.narayan@amd.com Cc: ravi.bangoria@amd.com Cc: eranian@google.com Link: https://lore.kernel.org/r/e8757bb9f511907a52bc182de9395c5edec2fccf.1729242778.git.sandipan.das@amd.com Signed-off-by: Namhyung Kim --- .../pmu-events/arch/x86/amdzen5/recommended.json | 112 +++++++++++++++++++++ 1 file changed, 112 insertions(+) (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/x86/amdzen5/recommended.json b/tools/perf/pmu-events/arch/x86/amdzen5/recommended.json index c97874039c1e..635d57e3bc15 100644 --- a/tools/perf/pmu-events/arch/x86/amdzen5/recommended.json +++ b/tools/perf/pmu-events/arch/x86/amdzen5/recommended.json @@ -341,5 +341,117 @@ "MetricGroup": "memory_controller", "PerPkg": "1", "ScaleUnit": "1per_memclk" + }, + { + "MetricName": "dram_read_bandwidth_for_local_or_remote_socket", + "BriefDescription": "DRAM read data bandwidth for accesses in local or remote socket.", + "MetricExpr": "(local_or_remote_socket_read_data_beats_dram_0 + local_or_remote_socket_read_data_beats_dram_1 + local_or_remote_socket_read_data_beats_dram_2 + local_or_remote_socket_read_data_beats_dram_3 + local_or_remote_socket_read_data_beats_dram_4 + local_or_remote_socket_read_data_beats_dram_5 + local_or_remote_socket_read_data_beats_dram_6 + local_or_remote_socket_read_data_beats_dram_7 + local_or_remote_socket_read_data_beats_dram_8 + local_or_remote_socket_read_data_beats_dram_9 + local_or_remote_socket_read_data_beats_dram_10 + local_or_remote_socket_read_data_beats_dram_11) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "dram_write_bandwidth_for_local_socket", + "BriefDescription": "DRAM write data bandwidth for accesses in local socket.", + "MetricExpr": "(local_socket_write_data_beats_dram_0 + local_socket_write_data_beats_dram_1 + local_socket_write_data_beats_dram_2 + local_socket_write_data_beats_dram_3 + local_socket_write_data_beats_dram_4 + local_socket_write_data_beats_dram_5 + local_socket_write_data_beats_dram_6 + local_socket_write_data_beats_dram_7 + local_socket_write_data_beats_dram_8 + local_socket_write_data_beats_dram_9 + local_socket_write_data_beats_dram_10 + local_socket_write_data_beats_dram_11) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "dram_write_bandwidth_for_remote_socket", + "BriefDescription": "DRAM write data bandwidth for accesses in remote socket.", + "MetricExpr": "(remote_socket_write_data_beats_dram_0 + remote_socket_write_data_beats_dram_1 + remote_socket_write_data_beats_dram_2 + remote_socket_write_data_beats_dram_3 + remote_socket_write_data_beats_dram_4 + remote_socket_write_data_beats_dram_5 + remote_socket_write_data_beats_dram_6 + remote_socket_write_data_beats_dram_7 + remote_socket_write_data_beats_dram_8 + remote_socket_write_data_beats_dram_9 + remote_socket_write_data_beats_dram_10 + remote_socket_write_data_beats_dram_11) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "dram_write_bandwidth_for_local_or_remote_socket", + "BriefDescription": "DRAM write data bandwidth for accesses in local or remote socket.", + "MetricExpr": "(local_or_remote_socket_write_data_beats_dram_0 + local_or_remote_socket_write_data_beats_dram_1 + local_or_remote_socket_write_data_beats_dram_2 + local_or_remote_socket_write_data_beats_dram_3 + local_or_remote_socket_write_data_beats_dram_4 + local_or_remote_socket_write_data_beats_dram_5 + local_or_remote_socket_write_data_beats_dram_6 + local_or_remote_socket_write_data_beats_dram_7 + local_or_remote_socket_write_data_beats_dram_8 + local_or_remote_socket_write_data_beats_dram_9 + local_or_remote_socket_write_data_beats_dram_10 + local_or_remote_socket_write_data_beats_dram_11) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "upstream_dma_read_bandwidth_for_local_socket", + "BriefDescription": "Upstream DMA read data bandwidth for accesses in local socket.", + "MetricExpr": "(local_socket_upstream_read_data_beats_io_0 + local_socket_upstream_read_data_beats_io_1 + local_socket_upstream_read_data_beats_io_2 + local_socket_upstream_read_data_beats_io_3 + local_socket_upstream_read_data_beats_io_4 + local_socket_upstream_read_data_beats_io_5 + local_socket_upstream_read_data_beats_io_6 + local_socket_upstream_read_data_beats_io_7) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "upstream_dma_write_bandwidth_for_local_socket", + "BriefDescription": "Upstream DMA write data bandwidth for accesses in local socket.", + "MetricExpr": "(local_socket_upstream_write_data_beats_io_0 + local_socket_upstream_write_data_beats_io_1 + local_socket_upstream_write_data_beats_io_2 + local_socket_upstream_write_data_beats_io_3 + local_socket_upstream_write_data_beats_io_4 + local_socket_upstream_write_data_beats_io_5 + local_socket_upstream_write_data_beats_io_6 + local_socket_upstream_write_data_beats_io_7) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "upstream_dma_read_bandwidth_for_remote_socket", + "BriefDescription": "Upstream DMA read data bandwidth for accesses in remote socket.", + "MetricExpr": "(remote_socket_upstream_read_data_beats_io_0 + remote_socket_upstream_read_data_beats_io_1 + remote_socket_upstream_read_data_beats_io_2 + remote_socket_upstream_read_data_beats_io_3 + remote_socket_upstream_read_data_beats_io_4 + remote_socket_upstream_read_data_beats_io_5 + remote_socket_upstream_read_data_beats_io_6 + remote_socket_upstream_read_data_beats_io_7) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "upstream_dma_write_bandwidth_for_remote_socket", + "BriefDescription": "Upstream DMA write data bandwidth for accesses in remote socket.", + "MetricExpr": "(remote_socket_upstream_write_data_beats_io_0 + remote_socket_upstream_write_data_beats_io_1 + remote_socket_upstream_write_data_beats_io_2 + remote_socket_upstream_write_data_beats_io_3 + remote_socket_upstream_write_data_beats_io_4 + remote_socket_upstream_write_data_beats_io_5 + remote_socket_upstream_write_data_beats_io_6 + remote_socket_upstream_write_data_beats_io_7) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "core_inbound_data_bandwidth_for_local_socket", + "BriefDescription": "Core inbound data bandwidth for accesses in local socket.", + "MetricExpr": "(local_socket_inbound_data_beats_cfi_0 + local_socket_inbound_data_beats_cfi_1 + local_socket_inbound_data_beats_cfi_2 + local_socket_inbound_data_beats_cfi_3 + local_socket_inbound_data_beats_cfi_4 + local_socket_inbound_data_beats_cfi_5 + local_socket_inbound_data_beats_cfi_6 + local_socket_inbound_data_beats_cfi_7 + local_socket_inbound_data_beats_cfi_8 + local_socket_inbound_data_beats_cfi_9 + local_socket_inbound_data_beats_cfi_10 + local_socket_inbound_data_beats_cfi_11 + local_socket_inbound_data_beats_cfi_12 + local_socket_inbound_data_beats_cfi_13 + local_socket_inbound_data_beats_cfi_14 + local_socket_inbound_data_beats_cfi_15) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "3.2e-5MB/s" + }, + { + "MetricName": "core_outbound_data_bandwidth_for_local_socket", + "BriefDescription": "Core outbound data bandwidth for accesses in local socket.", + "MetricExpr": "(local_socket_outbound_data_beats_cfi_0 + local_socket_outbound_data_beats_cfi_1 + local_socket_outbound_data_beats_cfi_2 + local_socket_outbound_data_beats_cfi_3 + local_socket_outbound_data_beats_cfi_4 + local_socket_outbound_data_beats_cfi_5 + local_socket_outbound_data_beats_cfi_6 + local_socket_outbound_data_beats_cfi_7 + local_socket_outbound_data_beats_cfi_8 + local_socket_outbound_data_beats_cfi_9 + local_socket_outbound_data_beats_cfi_10 + local_socket_outbound_data_beats_cfi_11 + local_socket_outbound_data_beats_cfi_12 + local_socket_outbound_data_beats_cfi_13 + local_socket_outbound_data_beats_cfi_14 + local_socket_outbound_data_beats_cfi_15) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "core_inbound_data_bandwidth_for_remote_socket", + "BriefDescription": "Core inbound data bandwidth for accesses in remote socket.", + "MetricExpr": "(remote_socket_inbound_data_beats_cfi_0 + remote_socket_inbound_data_beats_cfi_1 + remote_socket_inbound_data_beats_cfi_2 + remote_socket_inbound_data_beats_cfi_3 + remote_socket_inbound_data_beats_cfi_4 + remote_socket_inbound_data_beats_cfi_5 + remote_socket_inbound_data_beats_cfi_6 + remote_socket_inbound_data_beats_cfi_7 + remote_socket_inbound_data_beats_cfi_8 + remote_socket_inbound_data_beats_cfi_9 + remote_socket_inbound_data_beats_cfi_10 + remote_socket_inbound_data_beats_cfi_11 + remote_socket_inbound_data_beats_cfi_12 + remote_socket_inbound_data_beats_cfi_13 + remote_socket_inbound_data_beats_cfi_14 + remote_socket_inbound_data_beats_cfi_15) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "3.2e-5MB/s" + }, + { + "MetricName": "core_outbound_data_bandwidth_for_remote_socket", + "BriefDescription": "Core outbound data bandwidth for accesses in remote socket.", + "MetricExpr": "(remote_socket_outbound_data_beats_cfi_0 + remote_socket_outbound_data_beats_cfi_1 + remote_socket_outbound_data_beats_cfi_2 + remote_socket_outbound_data_beats_cfi_3 + remote_socket_outbound_data_beats_cfi_4 + remote_socket_outbound_data_beats_cfi_5 + remote_socket_outbound_data_beats_cfi_6 + remote_socket_outbound_data_beats_cfi_7 + remote_socket_outbound_data_beats_cfi_8 + remote_socket_outbound_data_beats_cfi_9 + remote_socket_outbound_data_beats_cfi_10 + remote_socket_outbound_data_beats_cfi_11 + remote_socket_outbound_data_beats_cfi_12 + remote_socket_outbound_data_beats_cfi_13 + remote_socket_outbound_data_beats_cfi_14 + remote_socket_outbound_data_beats_cfi_15) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "cross_socket_inbound_data_bandwidth_for_local_socket", + "BriefDescription": "Inbound data bandwidth for accesses between local socket and remote socket.", + "MetricExpr": "(local_socket_inbound_data_beats_link_0 + local_socket_inbound_data_beats_link_1 + local_socket_inbound_data_beats_link_2 + local_socket_inbound_data_beats_link_3 + local_socket_inbound_data_beats_link_4 + local_socket_inbound_data_beats_link_5) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" + }, + { + "MetricName": "cross_socket_outbound_data_bandwidth_for_local_socket", + "BriefDescription": "Outbound data bandwidth for accesses between local socket and remote socket.", + "MetricExpr": "(local_socket_outbound_data_beats_link_0 + local_socket_outbound_data_beats_link_1 + local_socket_outbound_data_beats_link_2 + local_socket_outbound_data_beats_link_3 + local_socket_outbound_data_beats_link_4 + local_socket_outbound_data_beats_link_5) / duration_time", + "MetricGroup": "data_fabric", + "PerPkg": "1", + "ScaleUnit": "6.4e-5MB/s" } ] -- cgit v1.2.3 From 46610ba41ef10b9570c5f5b12bde2f2eabb25bb5 Mon Sep 17 00:00:00 2001 From: Sandipan Das Date: Fri, 18 Oct 2024 15:01:05 +0530 Subject: perf vendor events amd: Update Zen 5 data cache fill events For events that count data cache fills, some combinations of the unit mask bits are useful for counting fills from local caches, DRAM or any far sources. However, named events currently exist for PMCx044 (Any Data Cache Fills) only. Add similar events for the following base events. * PMCx043 (Demand Data Cache Fills) * PMCx059 (Software Prefetch Data Cache Fills) * PMCx05A (Hardware Prefetch Data Cache Fills) While at it, remove "ls_any_fills_from_sys.all_dram_io" since it is a duplicate of "ls_any_fills_from_sys.dram_io_all". Event descriptions can be found in Section 2.1.16.5.2 "Load/Store (LS) Events" of the Processor Programming Reference (PPR) for AMD Family 1Ah Model 02h Revision C1 Processors document available at the link below. Link: https://bugzilla.kernel.org/attachment.cgi?id=307010 Signed-off-by: Sandipan Das Reviewed-by: Ian Rogers Cc: ananth.narayan@amd.com Cc: ravi.bangoria@amd.com Cc: eranian@google.com Link: https://lore.kernel.org/r/e036e3c9fb962c939fa06c855b68e532ee609e01.1729242778.git.sandipan.das@amd.com Signed-off-by: Namhyung Kim --- .../pmu-events/arch/x86/amdzen5/load-store.json | 78 ++++++++++++++++++++-- 1 file changed, 72 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/x86/amdzen5/load-store.json b/tools/perf/pmu-events/arch/x86/amdzen5/load-store.json index af2fdf1f55d6..ff6627a77805 100644 --- a/tools/perf/pmu-events/arch/x86/amdzen5/load-store.json +++ b/tools/perf/pmu-events/arch/x86/amdzen5/load-store.json @@ -96,6 +96,12 @@ "BriefDescription": "Demand data cache fills from L3 cache or different L2 cache in the same CCX.", "UMask": "0x02" }, + { + "EventName": "ls_dmnd_fills_from_sys.local_all", + "EventCode": "0x43", + "BriefDescription": "Demand data cache fills from local L2 cache, L3 cache or different L2 cache in the same CCX.", + "UMask": "0x03" + }, { "EventName": "ls_dmnd_fills_from_sys.near_cache", "EventCode": "0x43", @@ -114,12 +120,30 @@ "BriefDescription": "Demand data cache fills from cache of another CCX when the address was in a different NUMA node.", "UMask": "0x10" }, + { + "EventName": "ls_dmnd_fills_from_sys.remote_cache", + "EventCode": "0x43", + "BriefDescription": "Demand data cache fills from cache of another CCX when the address was in the same or a different NUMA node.", + "UMask": "0x14" + }, { "EventName": "ls_dmnd_fills_from_sys.dram_io_far", "EventCode": "0x43", "BriefDescription": "Demand data cache fills from either DRAM or MMIO in a different NUMA node (same or different socket).", "UMask": "0x40" }, + { + "EventName": "ls_dmnd_fills_from_sys.dram_io_all", + "EventCode": "0x43", + "BriefDescription": "Demand data cache fills from either DRAM or MMIO in the same or a different NUMA node (same or different socket).", + "UMask": "0x48" + }, + { + "EventName": "ls_dmnd_fills_from_sys.far_all", + "EventCode": "0x43", + "BriefDescription": "Demand data cache fills from either cache of another CCX, DRAM or MMIO when the address was in a different NUMA node (same or different socket).", + "UMask": "0x50" + }, { "EventName": "ls_dmnd_fills_from_sys.alternate_memories", "EventCode": "0x43", @@ -192,12 +216,6 @@ "BriefDescription": "Any data cache fills from either cache of another CCX, DRAM or MMIO when the address was in a different NUMA node (same or different socket).", "UMask": "0x50" }, - { - "EventName": "ls_any_fills_from_sys.all_dram_io", - "EventCode": "0x44", - "BriefDescription": "Any data cache fills from either DRAM or MMIO in any NUMA node (same or different socket).", - "UMask": "0x48" - }, { "EventName": "ls_any_fills_from_sys.alternate_memories", "EventCode": "0x44", @@ -342,6 +360,12 @@ "BriefDescription": "Software prefetch data cache fills from L3 cache or different L2 cache in the same CCX.", "UMask": "0x02" }, + { + "EventName": "ls_sw_pf_dc_fills.local_all", + "EventCode": "0x59", + "BriefDescription": "Software prefetch data cache fills from local L2 cache, L3 cache or different L2 cache in the same CCX.", + "UMask": "0x03" + }, { "EventName": "ls_sw_pf_dc_fills.near_cache", "EventCode": "0x59", @@ -360,12 +384,30 @@ "BriefDescription": "Software prefetch data cache fills from cache of another CCX in a different NUMA node.", "UMask": "0x10" }, + { + "EventName": "ls_sw_pf_dc_fills.remote_cache", + "EventCode": "0x59", + "BriefDescription": "Software prefetch data cache fills from cache of another CCX when the address was in the same or a different NUMA node.", + "UMask": "0x14" + }, { "EventName": "ls_sw_pf_dc_fills.dram_io_far", "EventCode": "0x59", "BriefDescription": "Software prefetch data cache fills from either DRAM or MMIO in a different NUMA node (same or different socket).", "UMask": "0x40" }, + { + "EventName": "ls_sw_pf_dc_fills.dram_io_all", + "EventCode": "0x59", + "BriefDescription": "Software prefetch data cache fills from either DRAM or MMIO in the same or a different NUMA node (same or different socket).", + "UMask": "0x48" + }, + { + "EventName": "ls_sw_pf_dc_fills.far_all", + "EventCode": "0x59", + "BriefDescription": "Software prefetch data cache fills from either cache of another CCX, DRAM or MMIO when the address was in a different NUMA node (same or different socket).", + "UMask": "0x50" + }, { "EventName": "ls_sw_pf_dc_fills.alternate_memories", "EventCode": "0x59", @@ -390,6 +432,12 @@ "BriefDescription": "Hardware prefetch data cache fills from L3 cache or different L2 cache in the same CCX.", "UMask": "0x02" }, + { + "EventName": "ls_hw_pf_dc_fills.local_all", + "EventCode": "0x5a", + "BriefDescription": "Hardware prefetch data cache fills from local L2 cache, L3 cache or different L2 cache in the same CCX.", + "UMask": "0x03" + }, { "EventName": "ls_hw_pf_dc_fills.near_cache", "EventCode": "0x5a", @@ -408,12 +456,30 @@ "BriefDescription": "Hardware prefetch data cache fills from cache of another CCX when the address was in a different NUMA node.", "UMask": "0x10" }, + { + "EventName": "ls_hw_pf_dc_fills.remote_cache", + "EventCode": "0x5a", + "BriefDescription": "Hardware prefetch data cache fills from cache of another CCX when the address was in the same or a different NUMA node.", + "UMask": "0x14" + }, { "EventName": "ls_hw_pf_dc_fills.dram_io_far", "EventCode": "0x5a", "BriefDescription": "Hardware prefetch data cache fills from either DRAM or MMIO in a different NUMA node (same or different socket).", "UMask": "0x40" }, + { + "EventName": "ls_hw_pf_dc_fills.dram_io_all", + "EventCode": "0x5a", + "BriefDescription": "Hardware prefetch data cache fills from either DRAM or MMIO in the same or a different NUMA node (same or different socket).", + "UMask": "0x48" + }, + { + "EventName": "ls_hw_pf_dc_fills.far_all", + "EventCode": "0x5a", + "BriefDescription": "Hardware prefetch data cache fills from either cache of another CCX, DRAM or MMIO when the address was in a different NUMA node (same or different socket).", + "UMask": "0x50" + }, { "EventName": "ls_hw_pf_dc_fills.alternate_memories", "EventCode": "0x5a", -- cgit v1.2.3 From a0b6594e411dcae0cc563f5157cf062e93603388 Mon Sep 17 00:00:00 2001 From: Srikar Dronamraju Date: Wed, 25 Sep 2024 11:16:18 +0530 Subject: gpio: sloppy-logic-analyzer remove reference to rcu_momentary_dyntick_idle() There is one last reference to rcu_momentary_dyntick_idle() after commit 32a9f26e5e26 ("rcu: Rename rcu_momentary_dyntick_idle() into rcu_momentary_eqs()") Rename it for consistency. Fixes: 32a9f26e5e26 ("rcu: Rename rcu_momentary_dyntick_idle() into rcu_momentary_eqs()") Signed-off-by: Srikar Dronamraju Acked-by: Frederic Weisbecker Link: https://lore.kernel.org/r/20240925054619.568209-1-srikar@linux.ibm.com Signed-off-by: Bartosz Golaszewski --- tools/gpio/gpio-sloppy-logic-analyzer.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/gpio/gpio-sloppy-logic-analyzer.sh b/tools/gpio/gpio-sloppy-logic-analyzer.sh index ed21a110df5e..3ef2278e49f9 100755 --- a/tools/gpio/gpio-sloppy-logic-analyzer.sh +++ b/tools/gpio/gpio-sloppy-logic-analyzer.sh @@ -113,7 +113,7 @@ init_cpu() taskset -p "$newmask" "$p" || continue done 2>/dev/null >/dev/null - # Big hammer! Working with 'rcu_momentary_dyntick_idle()' for a more fine-grained solution + # Big hammer! Working with 'rcu_momentary_eqs()' for a more fine-grained solution # still printed warnings. Same for re-enabling the stall detector after sampling. echo 1 > /sys/module/rcupdate/parameters/rcu_cpu_stall_suppress -- cgit v1.2.3 From fb6f20ecb121cef4d7946f834a6ee867c4e21b4a Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 17 Oct 2024 12:28:23 +0200 Subject: reiserfs: The last commit Deprecation period of reiserfs ends with the end of this year so it is time to remove it from the kernel. Acked-by: Darrick J. Wong Acked-by: Christian Brauner Signed-off-by: Jan Kara --- tools/objtool/noreturns.h | 1 - tools/testing/selftests/filesystems/statmount/statmount_test.c | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/objtool/noreturns.h b/tools/objtool/noreturns.h index e7da92489167..f37614cc2c1b 100644 --- a/tools/objtool/noreturns.h +++ b/tools/objtool/noreturns.h @@ -11,7 +11,6 @@ NORETURN(__ia32_sys_exit) NORETURN(__ia32_sys_exit_group) NORETURN(__kunit_abort) NORETURN(__module_put_and_kthread_exit) -NORETURN(__reiserfs_panic) NORETURN(__stack_chk_fail) NORETURN(__tdx_hypercall_failed) NORETURN(__ubsan_handle_builtin_unreachable) diff --git a/tools/testing/selftests/filesystems/statmount/statmount_test.c b/tools/testing/selftests/filesystems/statmount/statmount_test.c index c773334bbcc9..8eb6aa606a0d 100644 --- a/tools/testing/selftests/filesystems/statmount/statmount_test.c +++ b/tools/testing/selftests/filesystems/statmount/statmount_test.c @@ -27,7 +27,7 @@ static const char *const known_fs[] = { "ipathfs", "iso9660", "jffs2", "jfs", "minix", "mqueue", "msdos", "nfs", "nfs4", "nfsd", "nilfs2", "nsfs", "ntfs", "ntfs3", "ocfs2", "ocfs2_dlmfs", "ocxlflash", "omfs", "openpromfs", "overlay", "pipefs", - "proc", "pstore", "pvfs2", "qnx4", "qnx6", "ramfs", "reiserfs", + "proc", "pstore", "pvfs2", "qnx4", "qnx6", "ramfs", "resctrl", "romfs", "rootfs", "rpc_pipefs", "s390_hypfs", "secretmem", "securityfs", "selinuxfs", "smackfs", "smb3", "sockfs", "spufs", "squashfs", "sysfs", "sysv", "tmpfs", "tracefs", "ubifs", "udf", -- cgit v1.2.3 From 6414b3e5d5d44cd214161abf2ce2221d9e9de7bf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Sun, 20 Oct 2024 21:22:53 +0200 Subject: selftests/bpf: factorize conn and syncookies tests in a single runner MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit btf_skc_cls_ingress currently describe two tests, both running a simple tcp server and then initializing a connection to it. The sole difference between the tests is about the tcp_syncookie configuration, and some checks around this feature being enabled/disabled. Share the common code between those two tests by moving the code into a single runner, parameterized by a "gen_cookies" argument. Split the performed checks accordingly. Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241020-syncookie-v2-1-2db240225fed@bootlin.com Signed-off-by: Martin KaFai Lau --- .../selftests/bpf/prog_tests/btf_skc_cls_ingress.c | 106 +++++++-------------- 1 file changed, 37 insertions(+), 69 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c index ef4d6a3ae423..5d8d7736edc0 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c @@ -71,13 +71,14 @@ static void print_err_line(void) printf("bpf prog error at line %u\n", skel->bss->linum); } -static void test_conn(void) +static void run_test(bool gen_cookies) { + const char *tcp_syncookies = gen_cookies ? "2" : "1"; int listen_fd = -1, cli_fd = -1, srv_fd = -1, err; socklen_t addrlen = sizeof(srv_sa6); int srv_port; - if (write_sysctl("/proc/sys/net/ipv4/tcp_syncookies", "1")) + if (write_sysctl("/proc/sys/net/ipv4/tcp_syncookies", tcp_syncookies)) return; listen_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0); @@ -99,19 +100,36 @@ static void test_conn(void) if (CHECK_FAIL(srv_fd == -1)) goto done; - if (CHECK(skel->bss->listen_tp_sport != srv_port || - skel->bss->req_sk_sport != srv_port, - "Unexpected sk src port", - "listen_tp_sport:%u req_sk_sport:%u expected:%u\n", - skel->bss->listen_tp_sport, skel->bss->req_sk_sport, - srv_port)) + if (CHECK(skel->bss->listen_tp_sport != srv_port, + "Unexpected listen tp src port", + "listen_tp_sport:%u expected:%u\n", + skel->bss->listen_tp_sport, srv_port)) goto done; - if (CHECK(skel->bss->gen_cookie || skel->bss->recv_cookie, - "Unexpected syncookie states", - "gen_cookie:%u recv_cookie:%u\n", - skel->bss->gen_cookie, skel->bss->recv_cookie)) - goto done; + if (!gen_cookies) { + if (CHECK(skel->bss->req_sk_sport != srv_port, + "Unexpected req_sk src port", + "req_sk_sport:%u expected:%u\n", + skel->bss->req_sk_sport, srv_port)) + goto done; + if (CHECK(skel->bss->gen_cookie || skel->bss->recv_cookie, + "Unexpected syncookie states", + "gen_cookie:%u recv_cookie:%u\n", + skel->bss->gen_cookie, skel->bss->recv_cookie)) + goto done; + } else { + if (CHECK(skel->bss->req_sk_sport, + "Unexpected req_sk src port", + "req_sk_sport:%u expected:0\n", + skel->bss->req_sk_sport)) + goto done; + if (CHECK(!skel->bss->gen_cookie || + skel->bss->gen_cookie != skel->bss->recv_cookie, + "Unexpected syncookie states", + "gen_cookie:%u recv_cookie:%u\n", + skel->bss->gen_cookie, skel->bss->recv_cookie)) + goto done; + } CHECK(skel->bss->linum, "bpf prog detected error", "at line %u\n", skel->bss->linum); @@ -125,64 +143,14 @@ done: close(srv_fd); } -static void test_syncookie(void) +static void test_conn(void) { - int listen_fd = -1, cli_fd = -1, srv_fd = -1, err; - socklen_t addrlen = sizeof(srv_sa6); - int srv_port; - - /* Enforce syncookie mode */ - if (write_sysctl("/proc/sys/net/ipv4/tcp_syncookies", "2")) - return; - - listen_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0); - if (CHECK_FAIL(listen_fd == -1)) - return; - - err = getsockname(listen_fd, (struct sockaddr *)&srv_sa6, &addrlen); - if (CHECK(err, "getsockname(listen_fd)", "err:%d errno:%d\n", err, - errno)) - goto done; - memcpy(&skel->bss->srv_sa6, &srv_sa6, sizeof(srv_sa6)); - srv_port = ntohs(srv_sa6.sin6_port); - - cli_fd = connect_to_fd(listen_fd, 0); - if (CHECK_FAIL(cli_fd == -1)) - goto done; - - srv_fd = accept(listen_fd, NULL, NULL); - if (CHECK_FAIL(srv_fd == -1)) - goto done; - - if (CHECK(skel->bss->listen_tp_sport != srv_port, - "Unexpected tp src port", - "listen_tp_sport:%u expected:%u\n", - skel->bss->listen_tp_sport, srv_port)) - goto done; - - if (CHECK(skel->bss->req_sk_sport, - "Unexpected req_sk src port", - "req_sk_sport:%u expected:0\n", - skel->bss->req_sk_sport)) - goto done; - - if (CHECK(!skel->bss->gen_cookie || - skel->bss->gen_cookie != skel->bss->recv_cookie, - "Unexpected syncookie states", - "gen_cookie:%u recv_cookie:%u\n", - skel->bss->gen_cookie, skel->bss->recv_cookie)) - goto done; - - CHECK(skel->bss->linum, "bpf prog detected error", "at line %u\n", - skel->bss->linum); + run_test(false); +} -done: - if (listen_fd != -1) - close(listen_fd); - if (cli_fd != -1) - close(cli_fd); - if (srv_fd != -1) - close(srv_fd); +static void test_syncookie(void) +{ + run_test(true); } struct test { -- cgit v1.2.3 From 0335dd6b5a4c178d9ae34694a0be7862873378bd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Sun, 20 Oct 2024 21:22:54 +0200 Subject: selftests/bpf: add missing ns cleanups in btf_skc_cls_ingress MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit btf_skc_cls_ingress.c currently runs two subtests, and create a dedicated network namespace for each, but never cleans up the created namespace once the test has ended. Add missing namespace cleanup after each subtest to avoid accumulating namespaces for each new subtest. While at it, switch namespace management to netns_{new,free} Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241020-syncookie-v2-2-2db240225fed@bootlin.com Signed-off-by: Martin KaFai Lau --- .../selftests/bpf/prog_tests/btf_skc_cls_ingress.c | 33 +++++++++++++--------- 1 file changed, 19 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c index 5d8d7736edc0..c88fb0e3048c 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c @@ -17,32 +17,30 @@ #include "test_progs.h" #include "test_btf_skc_cls_ingress.skel.h" +#define TEST_NS "skc_cls_ingress" + static struct test_btf_skc_cls_ingress *skel; static struct sockaddr_in6 srv_sa6; static __u32 duration; -static int prepare_netns(void) +static struct netns_obj *prepare_netns(void) { LIBBPF_OPTS(bpf_tc_hook, qdisc_lo, .attach_point = BPF_TC_INGRESS); LIBBPF_OPTS(bpf_tc_opts, tc_attach, .prog_fd = bpf_program__fd(skel->progs.cls_ingress)); + struct netns_obj *ns = NULL; - if (CHECK(unshare(CLONE_NEWNET), "create netns", - "unshare(CLONE_NEWNET): %s (%d)", - strerror(errno), errno)) - return -1; - - if (CHECK(system("ip link set dev lo up"), - "ip link set dev lo up", "failed\n")) - return -1; + ns = netns_new(TEST_NS, true); + if (!ASSERT_OK_PTR(ns, "create and join netns")) + return ns; qdisc_lo.ifindex = if_nametoindex("lo"); if (!ASSERT_OK(bpf_tc_hook_create(&qdisc_lo), "qdisc add dev lo clsact")) - return -1; + goto free_ns; if (!ASSERT_OK(bpf_tc_attach(&qdisc_lo, &tc_attach), "filter add dev lo ingress")) - return -1; + goto free_ns; /* Ensure 20 bytes options (i.e. in total 40 bytes tcp header) for the * bpf_tcp_gen_syncookie() helper. @@ -50,9 +48,13 @@ static int prepare_netns(void) if (write_sysctl("/proc/sys/net/ipv4/tcp_window_scaling", "1") || write_sysctl("/proc/sys/net/ipv4/tcp_timestamps", "1") || write_sysctl("/proc/sys/net/ipv4/tcp_sack", "1")) - return -1; + goto free_ns; + + return ns; - return 0; +free_ns: + netns_free(ns); + return NULL; } static void reset_test(void) @@ -169,6 +171,7 @@ void test_btf_skc_cls_ingress(void) int i; skel = test_btf_skc_cls_ingress__open_and_load(); + struct netns_obj *ns; if (CHECK(!skel, "test_btf_skc_cls_ingress__open_and_load", "failed\n")) return; @@ -176,13 +179,15 @@ void test_btf_skc_cls_ingress(void) if (!test__start_subtest(tests[i].desc)) continue; - if (prepare_netns()) + ns = prepare_netns(); + if (!ns) break; tests[i].run(); print_err_line(); reset_test(); + netns_free(ns); } test_btf_skc_cls_ingress__destroy(skel); -- cgit v1.2.3 From 0da0a75cf649e1e5a688af1763653206260f17a9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Sun, 20 Oct 2024 21:22:55 +0200 Subject: selftests/bpf: get rid of global vars in btf_skc_cls_ingress MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are a few global variables in btf_skc_cls_ingress.c, which are not really used by different tests. Get rid of those global variables, by performing the following updates: - make srv_sa6 local to the main runner function - make skel local to the main function, and propagate it through function arguments - get rid of duration by replacing CHECK macros with the ASSERT_XXX macros. While updating those assert macros: - do not return early on asserts performing some actual tests, let the other tests run as well (keep the early return for parts handling test setup) - instead of converting the CHECK on skel->bss->linum, just remove it, since there is already a call to print_err_line after the test to print the failing line in the bpf program Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241020-syncookie-v2-3-2db240225fed@bootlin.com Signed-off-by: Martin KaFai Lau --- .../selftests/bpf/prog_tests/btf_skc_cls_ingress.c | 87 +++++++++------------- 1 file changed, 34 insertions(+), 53 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c index c88fb0e3048c..426c9d5402fa 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c @@ -19,11 +19,7 @@ #define TEST_NS "skc_cls_ingress" -static struct test_btf_skc_cls_ingress *skel; -static struct sockaddr_in6 srv_sa6; -static __u32 duration; - -static struct netns_obj *prepare_netns(void) +static struct netns_obj *prepare_netns(struct test_btf_skc_cls_ingress *skel) { LIBBPF_OPTS(bpf_tc_hook, qdisc_lo, .attach_point = BPF_TC_INGRESS); LIBBPF_OPTS(bpf_tc_opts, tc_attach, @@ -57,7 +53,7 @@ free_ns: return NULL; } -static void reset_test(void) +static void reset_test(struct test_btf_skc_cls_ingress *skel) { memset(&skel->bss->srv_sa6, 0, sizeof(skel->bss->srv_sa6)); skel->bss->listen_tp_sport = 0; @@ -67,16 +63,17 @@ static void reset_test(void) skel->bss->linum = 0; } -static void print_err_line(void) +static void print_err_line(struct test_btf_skc_cls_ingress *skel) { if (skel->bss->linum) printf("bpf prog error at line %u\n", skel->bss->linum); } -static void run_test(bool gen_cookies) +static void run_test(struct test_btf_skc_cls_ingress *skel, bool gen_cookies) { const char *tcp_syncookies = gen_cookies ? "2" : "1"; int listen_fd = -1, cli_fd = -1, srv_fd = -1, err; + struct sockaddr_in6 srv_sa6; socklen_t addrlen = sizeof(srv_sa6); int srv_port; @@ -84,58 +81,41 @@ static void run_test(bool gen_cookies) return; listen_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0); - if (CHECK_FAIL(listen_fd == -1)) + if (!ASSERT_OK_FD(listen_fd, "start server")) return; err = getsockname(listen_fd, (struct sockaddr *)&srv_sa6, &addrlen); - if (CHECK(err, "getsockname(listen_fd)", "err:%d errno:%d\n", err, - errno)) + if (!ASSERT_OK(err, "getsockname(listen_fd)")) goto done; memcpy(&skel->bss->srv_sa6, &srv_sa6, sizeof(srv_sa6)); srv_port = ntohs(srv_sa6.sin6_port); cli_fd = connect_to_fd(listen_fd, 0); - if (CHECK_FAIL(cli_fd == -1)) + if (!ASSERT_OK_FD(cli_fd, "connect client")) goto done; srv_fd = accept(listen_fd, NULL, NULL); - if (CHECK_FAIL(srv_fd == -1)) + if (!ASSERT_OK_FD(srv_fd, "accept connection")) goto done; - if (CHECK(skel->bss->listen_tp_sport != srv_port, - "Unexpected listen tp src port", - "listen_tp_sport:%u expected:%u\n", - skel->bss->listen_tp_sport, srv_port)) - goto done; + ASSERT_EQ(skel->bss->listen_tp_sport, srv_port, "listen tp src port"); if (!gen_cookies) { - if (CHECK(skel->bss->req_sk_sport != srv_port, - "Unexpected req_sk src port", - "req_sk_sport:%u expected:%u\n", - skel->bss->req_sk_sport, srv_port)) - goto done; - if (CHECK(skel->bss->gen_cookie || skel->bss->recv_cookie, - "Unexpected syncookie states", - "gen_cookie:%u recv_cookie:%u\n", - skel->bss->gen_cookie, skel->bss->recv_cookie)) - goto done; + ASSERT_EQ(skel->bss->req_sk_sport, srv_port, + "request socket source port with syncookies disabled"); + ASSERT_EQ(skel->bss->gen_cookie, 0, + "generated syncookie with syncookies disabled"); + ASSERT_EQ(skel->bss->recv_cookie, 0, + "received syncookie with syncookies disabled"); } else { - if (CHECK(skel->bss->req_sk_sport, - "Unexpected req_sk src port", - "req_sk_sport:%u expected:0\n", - skel->bss->req_sk_sport)) - goto done; - if (CHECK(!skel->bss->gen_cookie || - skel->bss->gen_cookie != skel->bss->recv_cookie, - "Unexpected syncookie states", - "gen_cookie:%u recv_cookie:%u\n", - skel->bss->gen_cookie, skel->bss->recv_cookie)) - goto done; + ASSERT_EQ(skel->bss->req_sk_sport, 0, + "request socket source port with syncookies enabled"); + ASSERT_NEQ(skel->bss->gen_cookie, 0, + "syncookie properly generated"); + ASSERT_EQ(skel->bss->gen_cookie, skel->bss->recv_cookie, + "matching syncookies on client and server"); } - CHECK(skel->bss->linum, "bpf prog detected error", "at line %u\n", - skel->bss->linum); - done: if (listen_fd != -1) close(listen_fd); @@ -145,19 +125,19 @@ done: close(srv_fd); } -static void test_conn(void) +static void test_conn(struct test_btf_skc_cls_ingress *skel) { - run_test(false); + run_test(skel, false); } -static void test_syncookie(void) +static void test_syncookie(struct test_btf_skc_cls_ingress *skel) { - run_test(true); + run_test(skel, true); } struct test { const char *desc; - void (*run)(void); + void (*run)(struct test_btf_skc_cls_ingress *skel); }; #define DEF_TEST(name) { #name, test_##name } @@ -168,25 +148,26 @@ static struct test tests[] = { void test_btf_skc_cls_ingress(void) { + struct test_btf_skc_cls_ingress *skel; + struct netns_obj *ns; int i; skel = test_btf_skc_cls_ingress__open_and_load(); - struct netns_obj *ns; - if (CHECK(!skel, "test_btf_skc_cls_ingress__open_and_load", "failed\n")) + if (!ASSERT_OK_PTR(skel, "test_btf_skc_cls_ingress__open_and_load")) return; for (i = 0; i < ARRAY_SIZE(tests); i++) { if (!test__start_subtest(tests[i].desc)) continue; - ns = prepare_netns(); + ns = prepare_netns(skel); if (!ns) break; - tests[i].run(); + tests[i].run(skel); - print_err_line(); - reset_test(); + print_err_line(skel); + reset_test(skel); netns_free(ns); } -- cgit v1.2.3 From 8a5cd986023547b3499072e17ff1ddae2c7c66a4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Sun, 20 Oct 2024 21:22:56 +0200 Subject: selftests/bpf: add ipv4 and dual ipv4/ipv6 support in btf_skc_cls_ingress MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit btf_skc_cls_ingress test currently checks that syncookie and bpf_sk_assign/release helpers behave correctly in multiple scenarios, but only with ipv6 socket. Increase those helpers coverage by adding testing support for IPv4 sockets and IPv4/IPv6 sockets. The rework is mostly based on features brought earlier in test_tcp_check_syncookie.sh to cover some fixes performed on those helpers, but test_tcp_check_syncookie.sh is not integrated in test_progs. The most notable changes linked to this are: - some rework in the corresponding eBPF program to support both types of traffic - the switch from start_server to start_server_str to allow to check some socket options - the introduction of new subtests for ipv4 and ipv4/ipv6 Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241020-syncookie-v2-4-2db240225fed@bootlin.com Signed-off-by: Martin KaFai Lau --- .../selftests/bpf/prog_tests/btf_skc_cls_ingress.c | 117 ++++++++++++++++++--- .../selftests/bpf/progs/test_btf_skc_cls_ingress.c | 80 +++++++++----- 2 files changed, 158 insertions(+), 39 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c index 426c9d5402fa..29b946d84816 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c @@ -19,6 +19,15 @@ #define TEST_NS "skc_cls_ingress" +#define BIT(n) (1 << (n)) +#define TEST_MODE_IPV4 BIT(0) +#define TEST_MODE_IPV6 BIT(1) +#define TEST_MODE_DUAL (TEST_MODE_IPV4 | TEST_MODE_IPV6) + +#define SERVER_ADDR_IPV4 "127.0.0.1" +#define SERVER_ADDR_IPV6 "::1" +#define SERVER_ADDR_DUAL "::0" + static struct netns_obj *prepare_netns(struct test_btf_skc_cls_ingress *skel) { LIBBPF_OPTS(bpf_tc_hook, qdisc_lo, .attach_point = BPF_TC_INGRESS); @@ -55,6 +64,7 @@ free_ns: static void reset_test(struct test_btf_skc_cls_ingress *skel) { + memset(&skel->bss->srv_sa4, 0, sizeof(skel->bss->srv_sa4)); memset(&skel->bss->srv_sa6, 0, sizeof(skel->bss->srv_sa6)); skel->bss->listen_tp_sport = 0; skel->bss->req_sk_sport = 0; @@ -69,26 +79,85 @@ static void print_err_line(struct test_btf_skc_cls_ingress *skel) printf("bpf prog error at line %u\n", skel->bss->linum); } -static void run_test(struct test_btf_skc_cls_ingress *skel, bool gen_cookies) +static int v6only_true(int fd, void *opts) +{ + int mode = true; + + return setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &mode, sizeof(mode)); +} + +static int v6only_false(int fd, void *opts) +{ + int mode = false; + + return setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &mode, sizeof(mode)); +} + +static void run_test(struct test_btf_skc_cls_ingress *skel, bool gen_cookies, + int ip_mode) { const char *tcp_syncookies = gen_cookies ? "2" : "1"; int listen_fd = -1, cli_fd = -1, srv_fd = -1, err; + struct network_helper_opts opts = { 0 }; + struct sockaddr_storage *addr; struct sockaddr_in6 srv_sa6; - socklen_t addrlen = sizeof(srv_sa6); + struct sockaddr_in srv_sa4; + socklen_t addr_len; + int sock_family; + char *srv_addr; int srv_port; + switch (ip_mode) { + case TEST_MODE_IPV4: + sock_family = AF_INET; + srv_addr = SERVER_ADDR_IPV4; + addr = (struct sockaddr_storage *)&srv_sa4; + addr_len = sizeof(srv_sa4); + break; + case TEST_MODE_IPV6: + opts.post_socket_cb = v6only_true; + sock_family = AF_INET6; + srv_addr = SERVER_ADDR_IPV6; + addr = (struct sockaddr_storage *)&srv_sa6; + addr_len = sizeof(srv_sa6); + break; + case TEST_MODE_DUAL: + opts.post_socket_cb = v6only_false; + sock_family = AF_INET6; + srv_addr = SERVER_ADDR_DUAL; + addr = (struct sockaddr_storage *)&srv_sa6; + addr_len = sizeof(srv_sa6); + break; + default: + PRINT_FAIL("Unknown IP mode %d", ip_mode); + return; + } + if (write_sysctl("/proc/sys/net/ipv4/tcp_syncookies", tcp_syncookies)) return; - listen_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0); + listen_fd = start_server_str(sock_family, SOCK_STREAM, srv_addr, 0, + &opts); if (!ASSERT_OK_FD(listen_fd, "start server")) return; - err = getsockname(listen_fd, (struct sockaddr *)&srv_sa6, &addrlen); + err = getsockname(listen_fd, (struct sockaddr *)addr, &addr_len); if (!ASSERT_OK(err, "getsockname(listen_fd)")) goto done; - memcpy(&skel->bss->srv_sa6, &srv_sa6, sizeof(srv_sa6)); - srv_port = ntohs(srv_sa6.sin6_port); + + switch (ip_mode) { + case TEST_MODE_IPV4: + memcpy(&skel->bss->srv_sa4, &srv_sa4, sizeof(srv_sa4)); + srv_port = ntohs(srv_sa4.sin_port); + break; + case TEST_MODE_IPV6: + case TEST_MODE_DUAL: + memcpy(&skel->bss->srv_sa6, &srv_sa6, sizeof(srv_sa6)); + srv_port = ntohs(srv_sa6.sin6_port); + break; + default: + goto done; + } cli_fd = connect_to_fd(listen_fd, 0); if (!ASSERT_OK_FD(cli_fd, "connect client")) @@ -125,14 +194,34 @@ done: close(srv_fd); } -static void test_conn(struct test_btf_skc_cls_ingress *skel) +static void test_conn_ipv4(struct test_btf_skc_cls_ingress *skel) +{ + run_test(skel, false, TEST_MODE_IPV4); +} + +static void test_conn_ipv6(struct test_btf_skc_cls_ingress *skel) +{ + run_test(skel, false, TEST_MODE_IPV6); +} + +static void test_conn_dual(struct test_btf_skc_cls_ingress *skel) +{ + run_test(skel, false, TEST_MODE_DUAL); +} + +static void test_syncookie_ipv4(struct test_btf_skc_cls_ingress *skel) +{ + run_test(skel, true, TEST_MODE_IPV4); +} + +static void test_syncookie_ipv6(struct test_btf_skc_cls_ingress *skel) { - run_test(skel, false); + run_test(skel, true, TEST_MODE_IPV6); } -static void test_syncookie(struct test_btf_skc_cls_ingress *skel) +static void test_syncookie_dual(struct test_btf_skc_cls_ingress *skel) { - run_test(skel, true); + run_test(skel, true, TEST_MODE_DUAL); } struct test { @@ -142,8 +231,12 @@ struct test { #define DEF_TEST(name) { #name, test_##name } static struct test tests[] = { - DEF_TEST(conn), - DEF_TEST(syncookie), + DEF_TEST(conn_ipv4), + DEF_TEST(conn_ipv6), + DEF_TEST(conn_dual), + DEF_TEST(syncookie_ipv4), + DEF_TEST(syncookie_ipv6), + DEF_TEST(syncookie_dual), }; void test_btf_skc_cls_ingress(void) diff --git a/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c index f0759efff6ef..b38ca3c35994 100644 --- a/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c +++ b/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c @@ -10,6 +10,7 @@ #endif struct sockaddr_in6 srv_sa6 = {}; +struct sockaddr_in srv_sa4 = {}; __u16 listen_tp_sport = 0; __u16 req_sk_sport = 0; __u32 recv_cookie = 0; @@ -18,8 +19,8 @@ __u32 linum = 0; #define LOG() ({ if (!linum) linum = __LINE__; }) -static void test_syncookie_helper(struct ipv6hdr *ip6h, struct tcphdr *th, - struct tcp_sock *tp, +static void test_syncookie_helper(void *iphdr, int iphdr_size, + struct tcphdr *th, struct tcp_sock *tp, struct __sk_buff *skb) { if (th->syn) { @@ -38,7 +39,7 @@ static void test_syncookie_helper(struct ipv6hdr *ip6h, struct tcphdr *th, return; } - mss_cookie = bpf_tcp_gen_syncookie(tp, ip6h, sizeof(*ip6h), + mss_cookie = bpf_tcp_gen_syncookie(tp, iphdr, iphdr_size, th, 40); if (mss_cookie < 0) { if (mss_cookie != -ENOENT) @@ -48,7 +49,7 @@ static void test_syncookie_helper(struct ipv6hdr *ip6h, struct tcphdr *th, } } else if (gen_cookie) { /* It was in cookie mode */ - int ret = bpf_tcp_check_syncookie(tp, ip6h, sizeof(*ip6h), + int ret = bpf_tcp_check_syncookie(tp, iphdr, iphdr_size, th, sizeof(*th)); if (ret < 0) { @@ -60,26 +61,58 @@ static void test_syncookie_helper(struct ipv6hdr *ip6h, struct tcphdr *th, } } -static int handle_ip6_tcp(struct ipv6hdr *ip6h, struct __sk_buff *skb) +static int handle_ip_tcp(struct ethhdr *eth, struct __sk_buff *skb) { - struct bpf_sock_tuple *tuple; + struct bpf_sock_tuple *tuple = NULL; + unsigned int tuple_len = 0; struct bpf_sock *bpf_skc; - unsigned int tuple_len; + void *data_end, *iphdr; + struct ipv6hdr *ip6h; + struct iphdr *ip4h; struct tcphdr *th; - void *data_end; + int iphdr_size; data_end = (void *)(long)(skb->data_end); - th = (struct tcphdr *)(ip6h + 1); - if (th + 1 > data_end) - return TC_ACT_OK; - - /* Is it the testing traffic? */ - if (th->dest != srv_sa6.sin6_port) + switch (eth->h_proto) { + case bpf_htons(ETH_P_IP): + ip4h = (struct iphdr *)(eth + 1); + if (ip4h + 1 > data_end) + return TC_ACT_OK; + if (ip4h->protocol != IPPROTO_TCP) + return TC_ACT_OK; + th = (struct tcphdr *)(ip4h + 1); + if (th + 1 > data_end) + return TC_ACT_OK; + /* Is it the testing traffic? */ + if (th->dest != srv_sa4.sin_port) + return TC_ACT_OK; + tuple_len = sizeof(tuple->ipv4); + tuple = (struct bpf_sock_tuple *)&ip4h->saddr; + iphdr = ip4h; + iphdr_size = sizeof(*ip4h); + break; + case bpf_htons(ETH_P_IPV6): + ip6h = (struct ipv6hdr *)(eth + 1); + if (ip6h + 1 > data_end) + return TC_ACT_OK; + if (ip6h->nexthdr != IPPROTO_TCP) + return TC_ACT_OK; + th = (struct tcphdr *)(ip6h + 1); + if (th + 1 > data_end) + return TC_ACT_OK; + /* Is it the testing traffic? */ + if (th->dest != srv_sa6.sin6_port) + return TC_ACT_OK; + tuple_len = sizeof(tuple->ipv6); + tuple = (struct bpf_sock_tuple *)&ip6h->saddr; + iphdr = ip6h; + iphdr_size = sizeof(*ip6h); + break; + default: return TC_ACT_OK; + } - tuple_len = sizeof(tuple->ipv6); - tuple = (struct bpf_sock_tuple *)&ip6h->saddr; if ((void *)tuple + tuple_len > data_end) { LOG(); return TC_ACT_OK; @@ -126,7 +159,7 @@ static int handle_ip6_tcp(struct ipv6hdr *ip6h, struct __sk_buff *skb) listen_tp_sport = tp->inet_conn.icsk_inet.sk.__sk_common.skc_num; - test_syncookie_helper(ip6h, th, tp, skb); + test_syncookie_helper(iphdr, iphdr_size, th, tp, skb); bpf_sk_release(tp); return TC_ACT_OK; } @@ -142,7 +175,6 @@ release: SEC("tc") int cls_ingress(struct __sk_buff *skb) { - struct ipv6hdr *ip6h; struct ethhdr *eth; void *data_end; @@ -152,17 +184,11 @@ int cls_ingress(struct __sk_buff *skb) if (eth + 1 > data_end) return TC_ACT_OK; - if (eth->h_proto != bpf_htons(ETH_P_IPV6)) - return TC_ACT_OK; - - ip6h = (struct ipv6hdr *)(eth + 1); - if (ip6h + 1 > data_end) + if (eth->h_proto != bpf_htons(ETH_P_IP) && + eth->h_proto != bpf_htons(ETH_P_IPV6)) return TC_ACT_OK; - if (ip6h->nexthdr == IPPROTO_TCP) - return handle_ip6_tcp(ip6h, skb); - - return TC_ACT_OK; + return handle_ip_tcp(eth, skb); } char _license[] SEC("license") = "GPL"; -- cgit v1.2.3 From 3845ce74777eeb94892cdeedaf4b76e2341f3f42 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Sun, 20 Oct 2024 21:22:57 +0200 Subject: selftests/bpf: test MSS value returned with bpf_tcp_gen_syncookie MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit One remaining difference between test_tcp_check_syncookie.sh and btf_skc_cls_ingress is a small test on the mss value embedded in the cookie generated with the eBPF helper. Bring the corresponding test in btf_skc_cls_ingress. Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241020-syncookie-v2-5-2db240225fed@bootlin.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c | 7 +++++++ tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c | 2 ++ 2 files changed, 9 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c index 29b946d84816..cf15cc3be491 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_skc_cls_ingress.c @@ -27,6 +27,8 @@ #define SERVER_ADDR_IPV4 "127.0.0.1" #define SERVER_ADDR_IPV6 "::1" #define SERVER_ADDR_DUAL "::0" +/* RFC791, 576 for minimal IPv4 datagram, minus 40 bytes of TCP header */ +#define MIN_IPV4_MSS 536 static struct netns_obj *prepare_netns(struct test_btf_skc_cls_ingress *skel) { @@ -71,6 +73,7 @@ static void reset_test(struct test_btf_skc_cls_ingress *skel) skel->bss->recv_cookie = 0; skel->bss->gen_cookie = 0; skel->bss->linum = 0; + skel->bss->mss = 0; } static void print_err_line(struct test_btf_skc_cls_ingress *skel) @@ -183,6 +186,10 @@ static void run_test(struct test_btf_skc_cls_ingress *skel, bool gen_cookies, "syncookie properly generated"); ASSERT_EQ(skel->bss->gen_cookie, skel->bss->recv_cookie, "matching syncookies on client and server"); + ASSERT_GT(skel->bss->mss, MIN_IPV4_MSS, + "MSS in cookie min value"); + ASSERT_LT(skel->bss->mss, USHRT_MAX, + "MSS in cookie max value"); } done: diff --git a/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c index b38ca3c35994..1cd1a1b72cb5 100644 --- a/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c +++ b/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c @@ -15,6 +15,7 @@ __u16 listen_tp_sport = 0; __u16 req_sk_sport = 0; __u32 recv_cookie = 0; __u32 gen_cookie = 0; +__u32 mss = 0; __u32 linum = 0; #define LOG() ({ if (!linum) linum = __LINE__; }) @@ -46,6 +47,7 @@ static void test_syncookie_helper(void *iphdr, int iphdr_size, LOG(); } else { gen_cookie = (__u32)mss_cookie; + mss = mss_cookie >> 32; } } else if (gen_cookie) { /* It was in cookie mode */ -- cgit v1.2.3 From c3566ee6c66c3d6113739ec00cda7e23f39a3744 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexis=20Lothor=C3=A9=20=28eBPF=20Foundation=29?= Date: Sun, 20 Oct 2024 21:22:58 +0200 Subject: selftests/bpf: remove test_tcp_check_syncookie MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Now that btf_skc_cls_ingress has the same coverage as test_tcp_check_syncookie, remove the second one and keep the first one as it is integrated in test_progs Signed-off-by: Alexis Lothoré (eBPF Foundation) Link: https://lore.kernel.org/r/20241020-syncookie-v2-6-2db240225fed@bootlin.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/.gitignore | 1 - tools/testing/selftests/bpf/Makefile | 9 +- .../bpf/progs/test_tcp_check_syncookie_kern.c | 167 ---------------- .../selftests/bpf/test_tcp_check_syncookie.sh | 85 -------- .../selftests/bpf/test_tcp_check_syncookie_user.c | 213 --------------------- 5 files changed, 3 insertions(+), 472 deletions(-) delete mode 100644 tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c delete mode 100755 tools/testing/selftests/bpf/test_tcp_check_syncookie.sh delete mode 100644 tools/testing/selftests/bpf/test_tcp_check_syncookie_user.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore index e6533b3400de..7e88551f2d38 100644 --- a/tools/testing/selftests/bpf/.gitignore +++ b/tools/testing/selftests/bpf/.gitignore @@ -24,7 +24,6 @@ test_flow_dissector flow_dissector_load test_tcpnotify_user test_libbpf -test_tcp_check_syncookie_user test_sysctl xdping test_cpp diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index f04af11df8eb..46924f406d06 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -137,7 +137,6 @@ TEST_PROGS := test_kmod.sh \ test_xdp_vlan_mode_generic.sh \ test_xdp_vlan_mode_native.sh \ test_lwt_ip_encap.sh \ - test_tcp_check_syncookie.sh \ test_tc_tunnel.sh \ test_tc_edt.sh \ test_xdping.sh \ @@ -154,10 +153,9 @@ TEST_PROGS_EXTENDED := with_addr.sh \ # Compile but not part of 'make run_tests' TEST_GEN_PROGS_EXTENDED = \ - flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \ - test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \ - xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \ - xdp_features bpf_test_no_cfi.ko + flow_dissector_load test_flow_dissector test_lirc_mode2_user xdping \ + test_cpp runqslower bench bpf_testmod.ko xskxceiver xdp_redirect_multi \ + xdp_synproxy veristat xdp_hw_metadata xdp_features bpf_test_no_cfi.ko TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi @@ -347,7 +345,6 @@ $(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) $(OUTPUT)/test_maps: $(TESTING_HELPERS) $(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) $(OUTPUT)/xsk.o: $(BPFOBJ) -$(OUTPUT)/test_tcp_check_syncookie_user: $(NETWORK_HELPERS) BPFTOOL ?= $(DEFAULT_BPFTOOL) $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ diff --git a/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c b/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c deleted file mode 100644 index 6edebce563b5..000000000000 --- a/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c +++ /dev/null @@ -1,167 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// Copyright (c) 2018 Facebook -// Copyright (c) 2019 Cloudflare - -#include - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __type(key, __u32); - __type(value, __u32); - __uint(max_entries, 3); -} results SEC(".maps"); - -static __always_inline __s64 gen_syncookie(void *data_end, struct bpf_sock *sk, - void *iph, __u32 ip_size, - struct tcphdr *tcph) -{ - __u32 thlen = tcph->doff * 4; - - if (tcph->syn && !tcph->ack) { - // packet should only have an MSS option - if (thlen != 24) - return 0; - - if ((void *)tcph + thlen > data_end) - return 0; - - return bpf_tcp_gen_syncookie(sk, iph, ip_size, tcph, thlen); - } - return 0; -} - -static __always_inline void check_syncookie(void *ctx, void *data, - void *data_end) -{ - struct bpf_sock_tuple tup; - struct bpf_sock *sk; - struct ethhdr *ethh; - struct iphdr *ipv4h; - struct ipv6hdr *ipv6h; - struct tcphdr *tcph; - int ret; - __u32 key_mss = 2; - __u32 key_gen = 1; - __u32 key = 0; - __s64 seq_mss; - - ethh = data; - if (ethh + 1 > data_end) - return; - - switch (bpf_ntohs(ethh->h_proto)) { - case ETH_P_IP: - ipv4h = data + sizeof(struct ethhdr); - if (ipv4h + 1 > data_end) - return; - - if (ipv4h->ihl != 5) - return; - - tcph = data + sizeof(struct ethhdr) + sizeof(struct iphdr); - if (tcph + 1 > data_end) - return; - - tup.ipv4.saddr = ipv4h->saddr; - tup.ipv4.daddr = ipv4h->daddr; - tup.ipv4.sport = tcph->source; - tup.ipv4.dport = tcph->dest; - - sk = bpf_skc_lookup_tcp(ctx, &tup, sizeof(tup.ipv4), - BPF_F_CURRENT_NETNS, 0); - if (!sk) - return; - - if (sk->state != BPF_TCP_LISTEN) - goto release; - - seq_mss = gen_syncookie(data_end, sk, ipv4h, sizeof(*ipv4h), - tcph); - - ret = bpf_tcp_check_syncookie(sk, ipv4h, sizeof(*ipv4h), - tcph, sizeof(*tcph)); - break; - - case ETH_P_IPV6: - ipv6h = data + sizeof(struct ethhdr); - if (ipv6h + 1 > data_end) - return; - - if (ipv6h->nexthdr != IPPROTO_TCP) - return; - - tcph = data + sizeof(struct ethhdr) + sizeof(struct ipv6hdr); - if (tcph + 1 > data_end) - return; - - memcpy(tup.ipv6.saddr, &ipv6h->saddr, sizeof(tup.ipv6.saddr)); - memcpy(tup.ipv6.daddr, &ipv6h->daddr, sizeof(tup.ipv6.daddr)); - tup.ipv6.sport = tcph->source; - tup.ipv6.dport = tcph->dest; - - sk = bpf_skc_lookup_tcp(ctx, &tup, sizeof(tup.ipv6), - BPF_F_CURRENT_NETNS, 0); - if (!sk) - return; - - if (sk->state != BPF_TCP_LISTEN) - goto release; - - seq_mss = gen_syncookie(data_end, sk, ipv6h, sizeof(*ipv6h), - tcph); - - ret = bpf_tcp_check_syncookie(sk, ipv6h, sizeof(*ipv6h), - tcph, sizeof(*tcph)); - break; - - default: - return; - } - - if (seq_mss > 0) { - __u32 cookie = (__u32)seq_mss; - __u32 mss = seq_mss >> 32; - - bpf_map_update_elem(&results, &key_gen, &cookie, 0); - bpf_map_update_elem(&results, &key_mss, &mss, 0); - } - - if (ret == 0) { - __u32 cookie = bpf_ntohl(tcph->ack_seq) - 1; - - bpf_map_update_elem(&results, &key, &cookie, 0); - } - -release: - bpf_sk_release(sk); -} - -SEC("tc") -int check_syncookie_clsact(struct __sk_buff *skb) -{ - check_syncookie(skb, (void *)(long)skb->data, - (void *)(long)skb->data_end); - return TC_ACT_OK; -} - -SEC("xdp") -int check_syncookie_xdp(struct xdp_md *ctx) -{ - check_syncookie(ctx, (void *)(long)ctx->data, - (void *)(long)ctx->data_end); - return XDP_PASS; -} - -char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh b/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh deleted file mode 100755 index b42c24282c25..000000000000 --- a/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh +++ /dev/null @@ -1,85 +0,0 @@ -#!/bin/sh -# SPDX-License-Identifier: GPL-2.0 -# Copyright (c) 2018 Facebook -# Copyright (c) 2019 Cloudflare - -set -eu -readonly NS1="ns1-$(mktemp -u XXXXXX)" - -wait_for_ip() -{ - local _i - printf "Wait for IP %s to become available " "$1" - for _i in $(seq ${MAX_PING_TRIES}); do - printf "." - if ns1_exec ping -c 1 -W 1 "$1" >/dev/null 2>&1; then - echo " OK" - return - fi - sleep 1 - done - echo 1>&2 "ERROR: Timeout waiting for test IP to become available." - exit 1 -} - -get_prog_id() -{ - awk '/ id / {sub(/.* id /, "", $0); print($1)}' -} - -ns1_exec() -{ - ip netns exec ${NS1} "$@" -} - -setup() -{ - ip netns add ${NS1} - ns1_exec ip link set lo up - - ns1_exec sysctl -w net.ipv4.tcp_syncookies=2 - ns1_exec sysctl -w net.ipv4.tcp_window_scaling=0 - ns1_exec sysctl -w net.ipv4.tcp_timestamps=0 - ns1_exec sysctl -w net.ipv4.tcp_sack=0 - - wait_for_ip 127.0.0.1 - wait_for_ip ::1 -} - -cleanup() -{ - ip netns del ns1 2>/dev/null || : -} - -main() -{ - trap cleanup EXIT 2 3 6 15 - setup - - printf "Testing clsact..." - ns1_exec tc qdisc add dev "${TEST_IF}" clsact - ns1_exec tc filter add dev "${TEST_IF}" ingress \ - bpf obj "${BPF_PROG_OBJ}" sec "${CLSACT_SECTION}" da - - BPF_PROG_ID=$(ns1_exec tc filter show dev "${TEST_IF}" ingress | \ - get_prog_id) - ns1_exec "${PROG}" "${BPF_PROG_ID}" - ns1_exec tc qdisc del dev "${TEST_IF}" clsact - - printf "Testing XDP..." - ns1_exec ip link set "${TEST_IF}" xdp \ - object "${BPF_PROG_OBJ}" section "${XDP_SECTION}" - BPF_PROG_ID=$(ns1_exec ip link show "${TEST_IF}" | get_prog_id) - ns1_exec "${PROG}" "${BPF_PROG_ID}" -} - -DIR=$(dirname $0) -TEST_IF=lo -MAX_PING_TRIES=5 -BPF_PROG_OBJ="${DIR}/test_tcp_check_syncookie_kern.bpf.o" -CLSACT_SECTION="tc" -XDP_SECTION="xdp" -BPF_PROG_ID=0 -PROG="${DIR}/test_tcp_check_syncookie_user" - -main diff --git a/tools/testing/selftests/bpf/test_tcp_check_syncookie_user.c b/tools/testing/selftests/bpf/test_tcp_check_syncookie_user.c deleted file mode 100644 index 3844f9b8232a..000000000000 --- a/tools/testing/selftests/bpf/test_tcp_check_syncookie_user.c +++ /dev/null @@ -1,213 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// Copyright (c) 2018 Facebook -// Copyright (c) 2019 Cloudflare - -#include -#include -#include -#include - -#include -#include -#include -#include - -#include -#include - -#include "cgroup_helpers.h" -#include "network_helpers.h" - -static int get_map_fd_by_prog_id(int prog_id, bool *xdp) -{ - struct bpf_prog_info info = {}; - __u32 info_len = sizeof(info); - __u32 map_ids[1]; - int prog_fd = -1; - int map_fd = -1; - - prog_fd = bpf_prog_get_fd_by_id(prog_id); - if (prog_fd < 0) { - log_err("Failed to get fd by prog id %d", prog_id); - goto err; - } - - info.nr_map_ids = 1; - info.map_ids = (__u64)(unsigned long)map_ids; - - if (bpf_prog_get_info_by_fd(prog_fd, &info, &info_len)) { - log_err("Failed to get info by prog fd %d", prog_fd); - goto err; - } - - if (!info.nr_map_ids) { - log_err("No maps found for prog fd %d", prog_fd); - goto err; - } - - *xdp = info.type == BPF_PROG_TYPE_XDP; - - map_fd = bpf_map_get_fd_by_id(map_ids[0]); - if (map_fd < 0) - log_err("Failed to get fd by map id %d", map_ids[0]); -err: - if (prog_fd >= 0) - close(prog_fd); - return map_fd; -} - -static int run_test(int server_fd, int results_fd, bool xdp) -{ - int client = -1, srv_client = -1; - int ret = 0; - __u32 key = 0; - __u32 key_gen = 1; - __u32 key_mss = 2; - __u32 value = 0; - __u32 value_gen = 0; - __u32 value_mss = 0; - - if (bpf_map_update_elem(results_fd, &key, &value, 0) < 0) { - log_err("Can't clear results"); - goto err; - } - - if (bpf_map_update_elem(results_fd, &key_gen, &value_gen, 0) < 0) { - log_err("Can't clear results"); - goto err; - } - - if (bpf_map_update_elem(results_fd, &key_mss, &value_mss, 0) < 0) { - log_err("Can't clear results"); - goto err; - } - - client = connect_to_fd(server_fd, 0); - if (client == -1) - goto err; - - srv_client = accept(server_fd, NULL, 0); - if (srv_client == -1) { - log_err("Can't accept connection"); - goto err; - } - - if (bpf_map_lookup_elem(results_fd, &key, &value) < 0) { - log_err("Can't lookup result"); - goto err; - } - - if (value == 0) { - log_err("Didn't match syncookie: %u", value); - goto err; - } - - if (bpf_map_lookup_elem(results_fd, &key_gen, &value_gen) < 0) { - log_err("Can't lookup result"); - goto err; - } - - if (xdp && value_gen == 0) { - // SYN packets do not get passed through generic XDP, skip the - // rest of the test. - printf("Skipping XDP cookie check\n"); - goto out; - } - - if (bpf_map_lookup_elem(results_fd, &key_mss, &value_mss) < 0) { - log_err("Can't lookup result"); - goto err; - } - - if (value != value_gen) { - log_err("BPF generated cookie does not match kernel one"); - goto err; - } - - if (value_mss < 536 || value_mss > USHRT_MAX) { - log_err("Unexpected MSS retrieved"); - goto err; - } - - goto out; - -err: - ret = 1; -out: - close(client); - close(srv_client); - return ret; -} - -static int v6only_true(int fd, void *opts) -{ - int mode = true; - - return setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &mode, sizeof(mode)); -} - -static int v6only_false(int fd, void *opts) -{ - int mode = false; - - return setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &mode, sizeof(mode)); -} - -int main(int argc, char **argv) -{ - struct network_helper_opts opts = { 0 }; - int server = -1; - int server_v6 = -1; - int server_dual = -1; - int results = -1; - int err = 0; - bool xdp; - - if (argc < 2) { - fprintf(stderr, "Usage: %s prog_id\n", argv[0]); - exit(1); - } - - /* Use libbpf 1.0 API mode */ - libbpf_set_strict_mode(LIBBPF_STRICT_ALL); - - results = get_map_fd_by_prog_id(atoi(argv[1]), &xdp); - if (results < 0) { - log_err("Can't get map"); - goto err; - } - - server = start_server_str(AF_INET, SOCK_STREAM, "127.0.0.1", 0, NULL); - if (server == -1) - goto err; - - opts.post_socket_cb = v6only_true; - server_v6 = start_server_str(AF_INET6, SOCK_STREAM, "::1", 0, &opts); - if (server_v6 == -1) - goto err; - - opts.post_socket_cb = v6only_false; - server_dual = start_server_str(AF_INET6, SOCK_STREAM, "::0", 0, &opts); - if (server_dual == -1) - goto err; - - if (run_test(server, results, xdp)) - goto err; - - if (run_test(server_v6, results, xdp)) - goto err; - - if (run_test(server_dual, results, xdp)) - goto err; - - printf("ok\n"); - goto out; -err: - err = 1; -out: - close(server); - close(server_v6); - close(server_dual); - close(results); - return err; -} -- cgit v1.2.3 From 0e14189459f6c424a95a146d288d59f0ed27fd3f Mon Sep 17 00:00:00 2001 From: Puranjay Mohan Date: Wed, 16 Oct 2024 08:41:36 +0000 Subject: selftests/bpf: Augment send_signal test with remote signaling Add testcases to test bpf_send_signal_task(). In these new test cases, the main process triggers the BPF program and the forked process receives the signals. The target process's signal handler receives a cookie from the bpf program. Signed-off-by: Puranjay Mohan Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241016084136.10305-3-puranjay@kernel.org --- .../testing/selftests/bpf/prog_tests/send_signal.c | 133 ++++++++++++++++----- .../selftests/bpf/progs/test_send_signal_kern.c | 35 +++++- 2 files changed, 130 insertions(+), 38 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/send_signal.c b/tools/testing/selftests/bpf/prog_tests/send_signal.c index 6cc69900b310..1aed94ec14ef 100644 --- a/tools/testing/selftests/bpf/prog_tests/send_signal.c +++ b/tools/testing/selftests/bpf/prog_tests/send_signal.c @@ -8,17 +8,25 @@ static int sigusr1_received; static void sigusr1_handler(int signum) { - sigusr1_received = 1; + sigusr1_received = 8; +} + +static void sigusr1_siginfo_handler(int s, siginfo_t *i, void *v) +{ + sigusr1_received = (int)(long long)i->si_value.sival_ptr; } static void test_send_signal_common(struct perf_event_attr *attr, - bool signal_thread) + bool signal_thread, bool remote) { struct test_send_signal_kern *skel; + struct sigaction sa; int pipe_c2p[2], pipe_p2c[2]; int err = -1, pmu_fd = -1; + volatile int j = 0; char buf[256]; pid_t pid; + int old_prio; if (!ASSERT_OK(pipe(pipe_c2p), "pipe_c2p")) return; @@ -39,11 +47,14 @@ static void test_send_signal_common(struct perf_event_attr *attr, } if (pid == 0) { - int old_prio; - volatile int j = 0; - /* install signal handler and notify parent */ - ASSERT_NEQ(signal(SIGUSR1, sigusr1_handler), SIG_ERR, "signal"); + if (remote) { + sa.sa_sigaction = sigusr1_siginfo_handler; + sa.sa_flags = SA_RESTART | SA_SIGINFO; + ASSERT_NEQ(sigaction(SIGUSR1, &sa, NULL), -1, "sigaction"); + } else { + ASSERT_NEQ(signal(SIGUSR1, sigusr1_handler), SIG_ERR, "signal"); + } close(pipe_c2p[0]); /* close read */ close(pipe_p2c[1]); /* close write */ @@ -52,10 +63,12 @@ static void test_send_signal_common(struct perf_event_attr *attr, * that if an interrupt happens, the underlying task * is this process. */ - errno = 0; - old_prio = getpriority(PRIO_PROCESS, 0); - ASSERT_OK(errno, "getpriority"); - ASSERT_OK(setpriority(PRIO_PROCESS, 0, -20), "setpriority"); + if (!remote) { + errno = 0; + old_prio = getpriority(PRIO_PROCESS, 0); + ASSERT_OK(errno, "getpriority"); + ASSERT_OK(setpriority(PRIO_PROCESS, 0, -20), "setpriority"); + } /* notify parent signal handler is installed */ ASSERT_EQ(write(pipe_c2p[1], buf, 1), 1, "pipe_write"); @@ -66,20 +79,25 @@ static void test_send_signal_common(struct perf_event_attr *attr, /* wait a little for signal handler */ for (int i = 0; i < 1000000000 && !sigusr1_received; i++) { j /= i + j + 1; - if (!attr) - /* trigger the nanosleep tracepoint program. */ - usleep(1); + if (remote) + sleep(1); + else + if (!attr) + /* trigger the nanosleep tracepoint program. */ + usleep(1); } - buf[0] = sigusr1_received ? '2' : '0'; - ASSERT_EQ(sigusr1_received, 1, "sigusr1_received"); + buf[0] = sigusr1_received; + + ASSERT_EQ(sigusr1_received, 8, "sigusr1_received"); ASSERT_EQ(write(pipe_c2p[1], buf, 1), 1, "pipe_write"); /* wait for parent notification and exit */ ASSERT_EQ(read(pipe_p2c[0], buf, 1), 1, "pipe_read"); /* restore the old priority */ - ASSERT_OK(setpriority(PRIO_PROCESS, 0, old_prio), "setpriority"); + if (!remote) + ASSERT_OK(setpriority(PRIO_PROCESS, 0, old_prio), "setpriority"); close(pipe_c2p[1]); close(pipe_p2c[0]); @@ -93,6 +111,17 @@ static void test_send_signal_common(struct perf_event_attr *attr, if (!ASSERT_OK_PTR(skel, "skel_open_and_load")) goto skel_open_load_failure; + /* boost with a high priority so we got a higher chance + * that if an interrupt happens, the underlying task + * is this process. + */ + if (remote) { + errno = 0; + old_prio = getpriority(PRIO_PROCESS, 0); + ASSERT_OK(errno, "getpriority"); + ASSERT_OK(setpriority(PRIO_PROCESS, 0, -20), "setpriority"); + } + if (!attr) { err = test_send_signal_kern__attach(skel); if (!ASSERT_OK(err, "skel_attach")) { @@ -100,8 +129,12 @@ static void test_send_signal_common(struct perf_event_attr *attr, goto destroy_skel; } } else { - pmu_fd = syscall(__NR_perf_event_open, attr, pid, -1 /* cpu */, - -1 /* group id */, 0 /* flags */); + if (!remote) + pmu_fd = syscall(__NR_perf_event_open, attr, pid, -1 /* cpu */, + -1 /* group id */, 0 /* flags */); + else + pmu_fd = syscall(__NR_perf_event_open, attr, getpid(), -1 /* cpu */, + -1 /* group id */, 0 /* flags */); if (!ASSERT_GE(pmu_fd, 0, "perf_event_open")) { err = -1; goto destroy_skel; @@ -119,11 +152,30 @@ static void test_send_signal_common(struct perf_event_attr *attr, /* trigger the bpf send_signal */ skel->bss->signal_thread = signal_thread; skel->bss->sig = SIGUSR1; - skel->bss->pid = pid; + if (!remote) { + skel->bss->target_pid = 0; + skel->bss->pid = pid; + } else { + skel->bss->target_pid = pid; + skel->bss->pid = getpid(); + } /* notify child that bpf program can send_signal now */ ASSERT_EQ(write(pipe_p2c[1], buf, 1), 1, "pipe_write"); + /* For the remote test, the BPF program is triggered from this + * process but the other process/thread is signaled. + */ + if (remote) { + if (!attr) { + for (int i = 0; i < 10; i++) + usleep(1); + } else { + for (int i = 0; i < 100000000; i++) + j /= i + 1; + } + } + /* wait for result */ err = read(pipe_c2p[0], buf, 1); if (!ASSERT_GE(err, 0, "reading pipe")) @@ -133,7 +185,7 @@ static void test_send_signal_common(struct perf_event_attr *attr, goto disable_pmu; } - ASSERT_EQ(buf[0], '2', "incorrect result"); + ASSERT_EQ(buf[0], 8, "incorrect result"); /* notify child safe to exit */ ASSERT_EQ(write(pipe_p2c[1], buf, 1), 1, "pipe_write"); @@ -142,18 +194,21 @@ disable_pmu: close(pmu_fd); destroy_skel: test_send_signal_kern__destroy(skel); + /* restore the old priority */ + if (remote) + ASSERT_OK(setpriority(PRIO_PROCESS, 0, old_prio), "setpriority"); skel_open_load_failure: close(pipe_c2p[0]); close(pipe_p2c[1]); wait(NULL); } -static void test_send_signal_tracepoint(bool signal_thread) +static void test_send_signal_tracepoint(bool signal_thread, bool remote) { - test_send_signal_common(NULL, signal_thread); + test_send_signal_common(NULL, signal_thread, remote); } -static void test_send_signal_perf(bool signal_thread) +static void test_send_signal_perf(bool signal_thread, bool remote) { struct perf_event_attr attr = { .freq = 1, @@ -162,10 +217,10 @@ static void test_send_signal_perf(bool signal_thread) .config = PERF_COUNT_SW_CPU_CLOCK, }; - test_send_signal_common(&attr, signal_thread); + test_send_signal_common(&attr, signal_thread, remote); } -static void test_send_signal_nmi(bool signal_thread) +static void test_send_signal_nmi(bool signal_thread, bool remote) { struct perf_event_attr attr = { .sample_period = 1, @@ -191,21 +246,35 @@ static void test_send_signal_nmi(bool signal_thread) close(pmu_fd); } - test_send_signal_common(&attr, signal_thread); + test_send_signal_common(&attr, signal_thread, remote); } void test_send_signal(void) { if (test__start_subtest("send_signal_tracepoint")) - test_send_signal_tracepoint(false); + test_send_signal_tracepoint(false, false); if (test__start_subtest("send_signal_perf")) - test_send_signal_perf(false); + test_send_signal_perf(false, false); if (test__start_subtest("send_signal_nmi")) - test_send_signal_nmi(false); + test_send_signal_nmi(false, false); if (test__start_subtest("send_signal_tracepoint_thread")) - test_send_signal_tracepoint(true); + test_send_signal_tracepoint(true, false); if (test__start_subtest("send_signal_perf_thread")) - test_send_signal_perf(true); + test_send_signal_perf(true, false); if (test__start_subtest("send_signal_nmi_thread")) - test_send_signal_nmi(true); + test_send_signal_nmi(true, false); + + /* Signal remote thread and thread group */ + if (test__start_subtest("send_signal_tracepoint_remote")) + test_send_signal_tracepoint(false, true); + if (test__start_subtest("send_signal_perf_remote")) + test_send_signal_perf(false, true); + if (test__start_subtest("send_signal_nmi_remote")) + test_send_signal_nmi(false, true); + if (test__start_subtest("send_signal_tracepoint_thread_remote")) + test_send_signal_tracepoint(true, true); + if (test__start_subtest("send_signal_perf_thread_remote")) + test_send_signal_perf(true, true); + if (test__start_subtest("send_signal_nmi_thread_remote")) + test_send_signal_nmi(true, true); } diff --git a/tools/testing/selftests/bpf/progs/test_send_signal_kern.c b/tools/testing/selftests/bpf/progs/test_send_signal_kern.c index 92354cd72044..176a355e3062 100644 --- a/tools/testing/selftests/bpf/progs/test_send_signal_kern.c +++ b/tools/testing/selftests/bpf/progs/test_send_signal_kern.c @@ -1,27 +1,50 @@ // SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2019 Facebook -#include +#include #include #include -__u32 sig = 0, pid = 0, status = 0, signal_thread = 0; +struct task_struct *bpf_task_from_pid(int pid) __ksym; +void bpf_task_release(struct task_struct *p) __ksym; +int bpf_send_signal_task(struct task_struct *task, int sig, enum pid_type type, u64 value) __ksym; + +__u32 sig = 0, pid = 0, status = 0, signal_thread = 0, target_pid = 0; static __always_inline int bpf_send_signal_test(void *ctx) { + struct task_struct *target_task = NULL; int ret; + u64 value; if (status != 0 || pid == 0) return 0; if ((bpf_get_current_pid_tgid() >> 32) == pid) { - if (signal_thread) - ret = bpf_send_signal_thread(sig); - else - ret = bpf_send_signal(sig); + if (target_pid) { + target_task = bpf_task_from_pid(target_pid); + if (!target_task) + return 0; + value = 8; + } + + if (signal_thread) { + if (target_pid) + ret = bpf_send_signal_task(target_task, sig, PIDTYPE_PID, value); + else + ret = bpf_send_signal_thread(sig); + } else { + if (target_pid) + ret = bpf_send_signal_task(target_task, sig, PIDTYPE_TGID, value); + else + ret = bpf_send_signal(sig); + } if (ret == 0) status = 1; } + if (target_task) + bpf_task_release(target_task); + return 0; } -- cgit v1.2.3 From 47d7650b9cb10381e5472840cf180a803f61fb0e Mon Sep 17 00:00:00 2001 From: Siddharth Menon Date: Fri, 18 Oct 2024 10:22:48 +0530 Subject: cpupower: add checks for xgettext and msgfmt Check whether xgettext and msgfmt are available on the system before attempting to generate GNU gettext Language Translations. In case of missing dependency, generate error message directing user to install the necessary package. Tested-by: John B. Wyatt IV Tested-by: John B. Wyatt IV Suggested-by: Shuah Khan Signed-off-by: Siddharth Menon Signed-off-by: Shuah Khan --- tools/power/cpupower/Makefile | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'tools') diff --git a/tools/power/cpupower/Makefile b/tools/power/cpupower/Makefile index c74c762002e8..175004ce44b2 100644 --- a/tools/power/cpupower/Makefile +++ b/tools/power/cpupower/Makefile @@ -218,17 +218,28 @@ else endif $(QUIET) $(STRIPCMD) $@ +ifeq (, $(shell which xgettext)) +$(warning "Install xgettext to extract translatable strings.") +else $(OUTPUT)po/$(PACKAGE).pot: $(UTIL_SRC) $(ECHO) " GETTEXT " $@ $(QUIET) xgettext --default-domain=$(PACKAGE) --add-comments \ --keyword=_ --keyword=N_ $(UTIL_SRC) -p $(@D) -o $(@F) +endif +ifeq (, $(shell which msgfmt)) +$(warning "Install msgfmt to generate binary message catalogs.") +else $(OUTPUT)po/%.gmo: po/%.po $(ECHO) " MSGFMT " $@ $(QUIET) msgfmt -o $@ po/$*.po +endif create-gmo: ${GMO_FILES} +ifeq (, $(shell which msgmerge)) +$(warning "Install msgmerge to merge translations.") +else update-po: $(OUTPUT)po/$(PACKAGE).pot $(ECHO) " MSGMRG " $@ $(QUIET) @for HLANG in $(LANGUAGES); do \ @@ -241,6 +252,7 @@ update-po: $(OUTPUT)po/$(PACKAGE).pot rm -f $(OUTPUT)po/$$HLANG.new.po; \ fi; \ done; +endif compile-bench: $(OUTPUT)libcpupower.so.$(LIB_MAJ) @V=$(V) confdir=$(confdir) $(MAKE) -C bench O=$(OUTPUT) -- cgit v1.2.3 From 18b63d63cd0148fef02c6c3f33a596ad7ee97a9a Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sat, 19 Oct 2024 23:18:40 -0300 Subject: perf test: Introduce workloads__for_each() And use it in run_workload(). Testing it: root@x1:~# perf trace -e *landlock* perf test -w landlock 0.000 ( 0.015 ms): :1274331/1274331 landlock_add_rule(ruleset_fd: 11, rule_type: LANDLOCK_RULE_PATH_BENEATH, rule_attr: 0x7ffd3fea55e0, flags: 45) = -1 EINVAL (Invalid argument) 0.018 ( 0.003 ms): :1274331/1274331 landlock_add_rule(ruleset_fd: 11, rule_type: LANDLOCK_RULE_NET_PORT, rule_attr: 0x7ffd3fea55f0, flags: 45) = -1 EINVAL (Invalid argument) root@x1:~# perf test -w bla No workload found: bla root@x1:~# Signed-off-by: Arnaldo Carvalho de Melo Reviewed-by: James Clark Cc: Thomas Gleixner Cc: Clark Williams Link: https://lore.kernel.org/r/20241020021842.1752770-2-acme@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 50533446e747..b47d53764d81 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -155,6 +155,9 @@ static struct test_workload *workloads[] = { &workload__landlock, }; +#define workloads__for_each(workload) \ + for (unsigned i = 0; i < ARRAY_SIZE(workloads) && ({ workload = workloads[i]; 1; }); i++) + static int num_subtests(const struct test_suite *t) { int num; @@ -504,11 +507,9 @@ static int perf_test__list(int argc, const char **argv) static int run_workload(const char *work, int argc, const char **argv) { - unsigned int i = 0; struct test_workload *twl; - for (i = 0; i < ARRAY_SIZE(workloads); i++) { - twl = workloads[i]; + workloads__for_each(twl) { if (!strcmp(twl->name, work)) return twl->func(argc, argv); } -- cgit v1.2.3 From 13c138308d15cb194db53d0f24a4dd9de37193f3 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sat, 19 Oct 2024 23:18:41 -0300 Subject: perf test: Introduce --list-workloads to list the available workloads Using it: $ perf test -w noplop No workload found: noplop $ $ perf test -w Error: switch `w' requires a value Usage: perf test [] [{list |[|]}] -w, --workload workload to run for testing, use '--list-workloads' to list the available ones. $ $ perf test --list-workloads noploop thloop leafloop sqrtloop brstack datasym landlock $ Would be good at some point to have a description in 'struct test_workload'. Signed-off-by: Arnaldo Carvalho de Melo Reviewed-by: James Clark Cc: Thomas Gleixner Cc: Clark Williams Link: https://lore.kernel.org/r/20241020021842.1752770-3-acme@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index b47d53764d81..7d27e30d9b2d 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -505,6 +505,17 @@ static int perf_test__list(int argc, const char **argv) return 0; } +static int workloads__fprintf_list(FILE *fp) +{ + struct test_workload *twl; + int printed = 0; + + workloads__for_each(twl) + printed += fprintf(fp, "%s\n", twl->name); + + return printed; +} + static int run_workload(const char *work, int argc, const char **argv) { struct test_workload *twl; @@ -535,6 +546,7 @@ int cmd_test(int argc, const char **argv) }; const char *skip = NULL; const char *workload = NULL; + bool list_workloads = false; const struct option test_options[] = { OPT_STRING('s', "skip", &skip, "tests", "tests to skip"), OPT_INCR('v', "verbose", &verbose, @@ -544,7 +556,8 @@ int cmd_test(int argc, const char **argv) OPT_BOOLEAN('p', "parallel", ¶llel, "Run the tests in parallel"), OPT_BOOLEAN('S', "sequential", &sequential, "Run the tests one after another rather than in parallel"), - OPT_STRING('w', "workload", &workload, "work", "workload to run for testing"), + OPT_STRING('w', "workload", &workload, "work", "workload to run for testing, use '--list-workloads' to list the available ones."), + OPT_BOOLEAN(0, "list-workloads", &list_workloads, "List the available builtin workloads to use with -w/--workload"), OPT_STRING(0, "dso", &dso_to_test, "dso", "dso to test"), OPT_STRING(0, "objdump", &test_objdump_path, "path", "objdump binary to use for disassembly and annotations"), @@ -570,6 +583,11 @@ int cmd_test(int argc, const char **argv) if (workload) return run_workload(workload, argc, argv); + if (list_workloads) { + workloads__fprintf_list(stdout); + return 0; + } + if (dont_fork) sequential = true; else if (parallel) -- cgit v1.2.3 From 915a377627f7ad91983377f68c3096b3594961a4 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sat, 19 Oct 2024 23:18:42 -0300 Subject: perf test: Document the -w/--workload option Wasn't documented so far, mention that it is mostly used in the shell regression tests. Signed-off-by: Arnaldo Carvalho de Melo Reviewed-by: James Clark Cc: Thomas Gleixner Cc: Clark Williams Link: https://lore.kernel.org/r/20241020021842.1752770-4-acme@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-test.txt | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-test.txt b/tools/perf/Documentation/perf-test.txt index 9acb8d1f6588..efcdec528a8f 100644 --- a/tools/perf/Documentation/perf-test.txt +++ b/tools/perf/Documentation/perf-test.txt @@ -48,3 +48,20 @@ OPTIONS --dso:: Specify a DSO for the "Symbols" test. + +-w:: +--workload=:: + Run a built-in workload, to list them use '--list-workloads', current ones include: + noploop, thloop, leafloop, sqrtloop, brstack, datasym and landlock. + + Used with the shell script regression tests. + + Some accept an extra parameter: + + seconds: leafloop, noploop, sqrtloop, thloop + nrloops: brstack + + The datasym and landlock workloads don't accept any. + +--list-workloads:: + List the available workloads to use with -w/--workload. -- cgit v1.2.3 From 3e2d4df574fc6bbd00b422f2f1ce5c1ac251feae Mon Sep 17 00:00:00 2001 From: Brian Geffon Date: Wed, 16 Oct 2024 15:00:09 -0400 Subject: perf tools: sched-pipe bench: add (-n) nonblocking benchmark The -n mode will benchmark pipes in a non-blocking mode using epoll_wait. This specific mode was added to demonstrate the broken sync nature of epoll: https://lore.kernel.org/lkml/20240426-zupfen-jahrzehnt-5be786bcdf04@brauner Signed-off-by: Brian Geffon Reviewed-by: Ian Rogers Cc: Steven Rostedt Link: https://lore.kernel.org/r/20241016190009.866615-1-bgeffon@google.com Signed-off-by: Namhyung Kim --- tools/perf/bench/sched-pipe.c | 43 ++++++++++++++++++++++++++++++++++++------- 1 file changed, 36 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/perf/bench/sched-pipe.c b/tools/perf/bench/sched-pipe.c index 3af6d3c55aba..e2562677df96 100644 --- a/tools/perf/bench/sched-pipe.c +++ b/tools/perf/bench/sched-pipe.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -34,6 +35,8 @@ struct thread_data { int nr; int pipe_read; int pipe_write; + struct epoll_event epoll_ev; + int epoll_fd; bool cgroup_failed; pthread_t pthread; }; @@ -44,6 +47,7 @@ static int loops = LOOPS_DEFAULT; /* Use processes by default: */ static bool threaded; +static bool nonblocking; static char *cgrp_names[2]; static struct cgroup *cgrps[2]; @@ -81,6 +85,7 @@ out: } static const struct option options[] = { + OPT_BOOLEAN('n', "nonblocking", &nonblocking, "Use non-blocking operations"), OPT_INTEGER('l', "loop", &loops, "Specify number of loops"), OPT_BOOLEAN('T', "threaded", &threaded, "Specify threads/process based task setup"), OPT_CALLBACK('G', "cgroups", NULL, "SEND,RECV", @@ -165,11 +170,25 @@ static void exit_cgroup(int nr) free(cgrp_names[nr]); } +static inline int read_pipe(struct thread_data *td) +{ + int ret, m; +retry: + if (nonblocking) { + ret = epoll_wait(td->epoll_fd, &td->epoll_ev, 1, -1); + if (ret < 0) + return ret; + } + ret = read(td->pipe_read, &m, sizeof(int)); + if (nonblocking && ret < 0 && errno == EWOULDBLOCK) + goto retry; + return ret; +} + static void *worker_thread(void *__tdata) { struct thread_data *td = __tdata; - int m = 0, i; - int ret; + int i, ret, m = 0; ret = enter_cgroup(td->nr); if (ret < 0) { @@ -177,16 +196,23 @@ static void *worker_thread(void *__tdata) return NULL; } + if (nonblocking) { + td->epoll_ev.events = EPOLLIN; + td->epoll_fd = epoll_create(1); + BUG_ON(td->epoll_fd < 0); + BUG_ON(epoll_ctl(td->epoll_fd, EPOLL_CTL_ADD, td->pipe_read, &td->epoll_ev) < 0); + } + for (i = 0; i < loops; i++) { if (!td->nr) { - ret = read(td->pipe_read, &m, sizeof(int)); + ret = read_pipe(td); BUG_ON(ret != sizeof(int)); ret = write(td->pipe_write, &m, sizeof(int)); BUG_ON(ret != sizeof(int)); } else { ret = write(td->pipe_write, &m, sizeof(int)); BUG_ON(ret != sizeof(int)); - ret = read(td->pipe_read, &m, sizeof(int)); + ret = read_pipe(td); BUG_ON(ret != sizeof(int)); } } @@ -209,13 +235,16 @@ int bench_sched_pipe(int argc, const char **argv) * discarding returned value of read(), write() * causes error in building environment for perf */ - int __maybe_unused ret, wait_stat; + int __maybe_unused ret, wait_stat, flags = 0; pid_t pid, retpid __maybe_unused; argc = parse_options(argc, argv, options, bench_sched_pipe_usage, 0); - BUG_ON(pipe(pipe_1)); - BUG_ON(pipe(pipe_2)); + if (nonblocking) + flags |= O_NONBLOCK; + + BUG_ON(pipe2(pipe_1, flags)); + BUG_ON(pipe2(pipe_2, flags)); gettimeofday(&start, NULL); -- cgit v1.2.3 From 7a08cb9b4bb92fb86f5fe8a3aa0ac08a9b3d783b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 17 Oct 2024 18:43:31 +0100 Subject: kselftest/arm64: Fail the overall fp-stress test if any test fails Currently fp-stress does not report a top level test result if it runs to completion, it always exits with a return code 0. Use the ksft_finished() helper to ensure that the exit code for the top level program reports a failure if any of the individual tests has failed. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241017-arm64-fp-stress-exit-code-v1-1-f528e53a2321@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/fp-stress.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/fp-stress.c b/tools/testing/selftests/arm64/fp/fp-stress.c index faac24bdefeb..e62c9dbad501 100644 --- a/tools/testing/selftests/arm64/fp/fp-stress.c +++ b/tools/testing/selftests/arm64/fp/fp-stress.c @@ -651,7 +651,5 @@ int main(int argc, char **argv) drain_output(true); - ksft_print_cnts(); - - return 0; + ksft_finished(); } -- cgit v1.2.3 From a6e263f125cd7b10614a83159c453c061dbf6877 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:43 +0200 Subject: selftests: net: lib: Introduce deferred commands In commit 8510801a9dbd ("selftests: drv-net: add ability to schedule cleanup with defer()"), a defer helper was added to Python selftests. The idea is to keep cleanup commands close to their dirtying counterparts, thereby making it more transparent what is cleaning up what, making it harder to miss a cleanup, and make the whole cleanup business exception safe. All these benefits are applicable to bash as well, exception safety can be interpreted in terms of safety vs. a SIGINT. This patch therefore introduces a framework of several helpers that serve to schedule cleanups in bash selftests: - defer_scope_push(), defer_scope_pop(): Deferred statements can be batched together in scopes. When a scope is popped, the deferred commands scheduled in that scope are executed in the order opposite to order of their scheduling. - defer(): Schedules a defer to the most recently pushed scope (or the default scope if none was pushed.) - defer_prio(): Schedules a defer on the priority track. The priority defer queue is run before the default defer queue when scope is popped. The issue that this is addressing is specifically the one of restoring devlink shared buffer threshold type. When setting up static thresholds, one has to first change the threshold type to static, then override the individual thresholds. When cleaning up, it would be natural to reset the threshold values first, then change the threshold type. But the values that are valid for dynamic thresholds are generally invalid for static thresholds and vice versa. Attempts to restore the values first would be bounced. Thus one has to first reset the threshold type, then adjust the thresholds. (You could argue that the shared buffer threshold type API is broken and you would be right, but here we are.) This cannot be solved by pure defers easily. I considered making it possible to disable an existing defer, so that one could then schedule a new defer and disable the original. But this forward-shifting of the defer job would have to take place after every threshold-adjusting command, which would make it very awkward to schedule these jobs. - defer_scopes_cleanup(): Pops any unpopped scopes, including the default one. The selftests that use defer should run this in their exit trap. This is important to get cleanups of interrupted scripts. - in_defer_scope(): Sometimes a function would like to introduce a new defer scope, then run whatever it is that it wants to run, and then pop the scope to run the deferred cleanups. The helper in_defer_scope() can be used to run another command within such environment, such that any scheduled defers run after the command finishes. The framework is added as a separate file lib/sh/defer.sh so that it can be used by all bash selftests, including those that do not currently use lib.sh. lib.sh however includes the file by default, because ideally all tests would use these helpers instead of hand-rolling their cleanups. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- tools/testing/selftests/net/forwarding/lib.sh | 3 +- tools/testing/selftests/net/lib.sh | 3 + tools/testing/selftests/net/lib/Makefile | 2 +- tools/testing/selftests/net/lib/sh/defer.sh | 115 ++++++++++++++++++++++++++ 4 files changed, 121 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/net/lib/sh/defer.sh (limited to 'tools') diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh index c992e385159c..d24b6af7ebfa 100644 --- a/tools/testing/selftests/net/forwarding/lib.sh +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -1403,7 +1403,8 @@ tests_run() local current_test for current_test in ${TESTS:-$ALL_TESTS}; do - $current_test + in_defer_scope \ + $current_test done } diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh index be8707bfb46e..c8991cc6bf28 100644 --- a/tools/testing/selftests/net/lib.sh +++ b/tools/testing/selftests/net/lib.sh @@ -1,6 +1,9 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0 +net_dir=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") +source "$net_dir/lib/sh/defer.sh" + ############################################################################## # Defines diff --git a/tools/testing/selftests/net/lib/Makefile b/tools/testing/selftests/net/lib/Makefile index 82c3264b115e..18b9443454a9 100644 --- a/tools/testing/selftests/net/lib/Makefile +++ b/tools/testing/selftests/net/lib/Makefile @@ -10,6 +10,6 @@ TEST_FILES += ../../../../net/ynl TEST_GEN_FILES += csum -TEST_INCLUDES := $(wildcard py/*.py) +TEST_INCLUDES := $(wildcard py/*.py sh/*.sh) include ../../lib.mk diff --git a/tools/testing/selftests/net/lib/sh/defer.sh b/tools/testing/selftests/net/lib/sh/defer.sh new file mode 100644 index 000000000000..082f5d38321b --- /dev/null +++ b/tools/testing/selftests/net/lib/sh/defer.sh @@ -0,0 +1,115 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# map[(scope_id,track,cleanup_id) -> cleanup_command] +# track={d=default | p=priority} +declare -A __DEFER__JOBS + +# map[(scope_id,track) -> # cleanup_commands] +declare -A __DEFER__NJOBS + +# scope_id of the topmost scope. +__DEFER__SCOPE_ID=0 + +__defer__ndefer_key() +{ + local track=$1; shift + + echo $__DEFER__SCOPE_ID,$track +} + +__defer__defer_key() +{ + local track=$1; shift + local defer_ix=$1; shift + + echo $__DEFER__SCOPE_ID,$track,$defer_ix +} + +__defer__ndefers() +{ + local track=$1; shift + + echo ${__DEFER__NJOBS[$(__defer__ndefer_key $track)]} +} + +__defer__run() +{ + local track=$1; shift + local defer_ix=$1; shift + local defer_key=$(__defer__defer_key $track $defer_ix) + + ${__DEFER__JOBS[$defer_key]} + unset __DEFER__JOBS[$defer_key] +} + +__defer__schedule() +{ + local track=$1; shift + local ndefers=$(__defer__ndefers $track) + local ndefers_key=$(__defer__ndefer_key $track) + local defer_key=$(__defer__defer_key $track $ndefers) + local defer="$@" + + __DEFER__JOBS[$defer_key]="$defer" + __DEFER__NJOBS[$ndefers_key]=$((ndefers + 1)) +} + +__defer__scope_wipe() +{ + __DEFER__NJOBS[$(__defer__ndefer_key d)]=0 + __DEFER__NJOBS[$(__defer__ndefer_key p)]=0 +} + +defer_scope_push() +{ + ((__DEFER__SCOPE_ID++)) + __defer__scope_wipe +} + +defer_scope_pop() +{ + local defer_ix + + for ((defer_ix=$(__defer__ndefers p); defer_ix-->0; )); do + __defer__run p $defer_ix + done + + for ((defer_ix=$(__defer__ndefers d); defer_ix-->0; )); do + __defer__run d $defer_ix + done + + __defer__scope_wipe + ((__DEFER__SCOPE_ID--)) +} + +defer() +{ + __defer__schedule d "$@" +} + +defer_prio() +{ + __defer__schedule p "$@" +} + +defer_scopes_cleanup() +{ + while ((__DEFER__SCOPE_ID >= 0)); do + defer_scope_pop + done +} + +in_defer_scope() +{ + local ret + + defer_scope_push + "$@" + ret=$? + defer_scope_pop + + return $ret +} + +__defer__scope_wipe -- cgit v1.2.3 From b4b0549a4e59747b49619b2edabfb0d04e37c0b9 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:44 +0200 Subject: selftests: forwarding: Add a fallback cleanup() Consistent use of defers obviates the need for a separate test-specific cleanup function -- everything is just taken care of in defers. So in this patch, introduce a cleanup() helper in the forwarding lib.sh, which calls just pre_cleanup() and defer_scopes_cleanup(). Selftests are obviously still free to override the function. Since pre_cleanup() is too entangled with forwarding-specific minutia, the function cannot currently be in net/lib.sh. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- tools/testing/selftests/net/forwarding/lib.sh | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh index d24b6af7ebfa..76e6d7698caf 100644 --- a/tools/testing/selftests/net/forwarding/lib.sh +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -1408,6 +1408,12 @@ tests_run() done } +cleanup() +{ + pre_cleanup + defer_scopes_cleanup +} + multipath_eval() { local desc="$1" -- cgit v1.2.3 From 0e07d5dbfbd9b0441ae4ec07a2a72738121356e2 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:45 +0200 Subject: selftests: forwarding: lib: Allow passing PID to stop_traffic() Now that it is possible to schedule a deferral of stop_traffic() right after the traffic is started, we do not have to rely on the %% magic to kill the background process that was started last. Instead we can just give the PID explicitly. This makes it possible to start other background processes after the traffic is started without confusing the cleanup. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- tools/testing/selftests/net/forwarding/lib.sh | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh index 76e6d7698caf..89c25f72b10c 100644 --- a/tools/testing/selftests/net/forwarding/lib.sh +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -1768,8 +1768,10 @@ start_tcp_traffic() stop_traffic() { + local pid=${1-%%}; shift + # Suppress noise from killing mausezahn. - { kill %% && wait %%; } 2>/dev/null + { kill $pid && wait $pid; } 2>/dev/null } declare -A cappid -- cgit v1.2.3 From 7f46615d59373b65dcd0fea7784bf20f93c169f0 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:46 +0200 Subject: selftests: RED: Use defer for test cleanup Instead of having a suite of dedicated cleanup functions, use the defer framework to schedule cleanups right as their setup functions are run. The sleep after stop_traffic() in mlxsw selftests is necessary, but scheduling it as "defer sleep; defer stop_traffic" is silly. Instead, add a local helper to stop traffic and sleep afterwards. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- .../selftests/drivers/net/mlxsw/sch_red_core.sh | 185 ++++++++++----------- .../selftests/drivers/net/mlxsw/sch_red_ets.sh | 24 +-- .../selftests/drivers/net/mlxsw/sch_red_root.sh | 18 +- tools/testing/selftests/net/forwarding/sch_red.sh | 103 +++++------- 4 files changed, 149 insertions(+), 181 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh index f4c324957dcc..537d6baa77b7 100644 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh @@ -75,6 +75,18 @@ source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh source mlxsw_lib.sh +stop_traffic_sleep() +{ + local pid=$1; shift + + # Issuing a kill still leaves a bunch of packets lingering in the + # buffers. This traffic then arrives at the point where a follow-up test + # is already running, and can confuse the test. Therefore sleep after + # stopping traffic to flush any leftover packets. + stop_traffic "$pid" + sleep 1 +} + ipaddr() { local host=$1; shift @@ -89,39 +101,31 @@ host_create() local host=$1; shift simple_if_init $dev + defer simple_if_fini $dev + mtu_set $dev 10000 + defer mtu_restore $dev vlan_create $dev 10 v$dev $(ipaddr $host 10)/28 + defer vlan_destroy $dev 10 ip link set dev $dev.10 type vlan egress 0:0 vlan_create $dev 11 v$dev $(ipaddr $host 11)/28 + defer vlan_destroy $dev 11 ip link set dev $dev.11 type vlan egress 0:1 } -host_destroy() -{ - local dev=$1; shift - - vlan_destroy $dev 11 - vlan_destroy $dev 10 - mtu_restore $dev - simple_if_fini $dev -} - h1_create() { host_create $h1 1 } -h1_destroy() -{ - host_destroy $h1 -} - h2_create() { host_create $h2 2 + tc qdisc add dev $h2 clsact + defer tc qdisc del dev $h2 clsact # Some of the tests in this suite use multicast traffic. As this traffic # enters BR2_10 resp. BR2_11, it is flooded to all other ports. Thus @@ -139,13 +143,7 @@ h2_create() tc qdisc replace dev $h2 root handle 10: tbf rate 200mbit \ burst 128K limit 1G -} - -h2_destroy() -{ - tc qdisc del dev $h2 root handle 10: - tc qdisc del dev $h2 clsact - host_destroy $h2 + defer tc qdisc del dev $h2 root handle 10: } h3_create() @@ -153,40 +151,54 @@ h3_create() host_create $h3 3 } -h3_destroy() -{ - host_destroy $h3 -} - switch_create() { local intf local vlan ip link add dev br1_10 type bridge + defer ip link del dev br1_10 + ip link add dev br1_11 type bridge + defer ip link del dev br1_11 ip link add dev br2_10 type bridge + defer ip link del dev br2_10 + ip link add dev br2_11 type bridge + defer ip link del dev br2_11 for intf in $swp1 $swp2 $swp3 $swp4 $swp5; do ip link set dev $intf up + defer ip link set dev $intf down + mtu_set $intf 10000 + defer mtu_restore $intf done for intf in $swp1 $swp4; do for vlan in 10 11; do vlan_create $intf $vlan + defer vlan_destroy $intf $vlan + ip link set dev $intf.$vlan master br1_$vlan + defer ip link set dev $intf.$vlan nomaster + ip link set dev $intf.$vlan up + defer ip link set dev $intf.$vlan up done done for intf in $swp2 $swp3 $swp5; do for vlan in 10 11; do vlan_create $intf $vlan + defer vlan_destroy $intf $vlan + ip link set dev $intf.$vlan master br2_$vlan + defer ip link set dev $intf.$vlan nomaster + ip link set dev $intf.$vlan up + defer ip link set dev $intf.$vlan up done done @@ -201,49 +213,25 @@ switch_create() for intf in $swp3 $swp4; do tc qdisc replace dev $intf root handle 1: tbf rate 200mbit \ burst 128K limit 1G + defer tc qdisc del dev $intf root handle 1: done ip link set dev br1_10 up + defer ip link set dev br1_10 down + ip link set dev br1_11 up + defer ip link set dev br1_11 down + ip link set dev br2_10 up + defer ip link set dev br2_10 down + ip link set dev br2_11 up + defer ip link set dev br2_11 down local size=$(devlink_pool_size_thtype 0 | cut -d' ' -f 1) devlink_port_pool_th_save $swp3 8 devlink_port_pool_th_set $swp3 8 $size -} - -switch_destroy() -{ - local intf - local vlan - - devlink_port_pool_th_restore $swp3 8 - - ip link set dev br2_11 down - ip link set dev br2_10 down - ip link set dev br1_11 down - ip link set dev br1_10 down - - for intf in $swp4 $swp3; do - tc qdisc del dev $intf root handle 1: - done - - for intf in $swp5 $swp3 $swp2 $swp4 $swp1; do - for vlan in 11 10; do - ip link set dev $intf.$vlan down - ip link set dev $intf.$vlan nomaster - vlan_destroy $intf $vlan - done - - mtu_restore $intf - ip link set dev $intf down - done - - ip link del dev br2_11 - ip link del dev br2_10 - ip link del dev br1_11 - ip link del dev br1_10 + defer devlink_port_pool_th_restore $swp3 8 } setup_prepare() @@ -263,6 +251,7 @@ setup_prepare() h3_mac=$(mac_get $h3) vrf_prepare + defer vrf_cleanup h1_create h2_create @@ -270,18 +259,6 @@ setup_prepare() switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h3_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1.10 $(ipaddr 3 10) " from host 1, vlan 10" @@ -450,6 +427,7 @@ __do_ecn_test() start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \ $h3_mac tos=0x01 + defer stop_traffic_sleep $! sleep 1 ecn_test_common "$name" "$get_nmarked" $vlan $limit @@ -461,9 +439,6 @@ __do_ecn_test() build_backlog $vlan $((2 * limit)) udp >/dev/null check_fail $? "UDP traffic went into backlog instead of being early-dropped" log_test "TC $((vlan - 10)): $name backlog > limit: UDP early-dropped" - - stop_traffic - sleep 1 } do_ecn_test() @@ -471,7 +446,8 @@ do_ecn_test() local vlan=$1; shift local limit=$1; shift - __do_ecn_test get_nmarked "$vlan" "$limit" + in_defer_scope \ + __do_ecn_test get_nmarked "$vlan" "$limit" } do_ecn_test_perband() @@ -480,10 +456,11 @@ do_ecn_test_perband() local limit=$1; shift mlxsw_only_on_spectrum 3+ || return - __do_ecn_test get_qdisc_nmarked "$vlan" "$limit" "per-band ECN" + in_defer_scope \ + __do_ecn_test get_qdisc_nmarked "$vlan" "$limit" "per-band ECN" } -do_ecn_nodrop_test() +__do_ecn_nodrop_test() { local vlan=$1; shift local limit=$1; shift @@ -491,6 +468,7 @@ do_ecn_nodrop_test() start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \ $h3_mac tos=0x01 + defer stop_traffic_sleep $! sleep 1 ecn_test_common "$name" get_nmarked $vlan $limit @@ -502,12 +480,15 @@ do_ecn_nodrop_test() build_backlog $vlan $((2 * limit)) udp >/dev/null check_err $? "UDP traffic was early-dropped instead of getting into backlog" log_test "TC $((vlan - 10)): $name backlog > limit: UDP not dropped" +} - stop_traffic - sleep 1 +do_ecn_nodrop_test() +{ + in_defer_scope \ + __do_ecn_nodrop_test "$@" } -do_red_test() +__do_red_test() { local vlan=$1; shift local limit=$1; shift @@ -518,6 +499,7 @@ do_red_test() # is above limit. start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \ $h3_mac tos=0x01 + defer stop_traffic_sleep $! # Pushing below the queue limit should work. RET=0 @@ -539,12 +521,15 @@ do_red_test() ((-15 <= pct && pct <= 15)) check_err $? "backlog $backlog / $limit expected <= 15% distance" log_test "TC $((vlan - 10)): RED backlog > limit" +} - stop_traffic - sleep 1 +do_red_test() +{ + in_defer_scope \ + __do_red_test "$@" } -do_mc_backlog_test() +__do_mc_backlog_test() { local vlan=$1; shift local limit=$1; shift @@ -554,7 +539,10 @@ do_mc_backlog_test() RET=0 start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) bc + defer stop_traffic_sleep $! + start_tcp_traffic $h2.$vlan $(ipaddr 2 $vlan) $(ipaddr 3 $vlan) bc + defer stop_traffic_sleep $! qbl=$(busywait 5000 until_counter_is ">= 500000" \ get_qdisc_backlog $vlan) @@ -567,13 +555,16 @@ do_mc_backlog_test() get_mc_transmit_queue $vlan) check_err $? "MC backlog reported by qdisc not visible in ethtool" - stop_traffic - stop_traffic - log_test "TC $((vlan - 10)): Qdisc reports MC backlog" } -do_mark_test() +do_mc_backlog_test() +{ + in_defer_scope \ + __do_mc_backlog_test "$@" +} + +__do_mark_test() { local vlan=$1; shift local limit=$1; shift @@ -588,6 +579,7 @@ do_mark_test() start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \ $h3_mac tos=0x01 + defer stop_traffic_sleep $! # Create a bit of a backlog and observe no mirroring due to marks. qevent_rule_install_$subtest @@ -617,12 +609,15 @@ do_mark_test() else log_test "TC $((vlan - 10)): marked packets $subtest'd" fi +} - stop_traffic - sleep 1 +do_mark_test() +{ + in_defer_scope \ + __do_mark_test "$@" } -do_drop_test() +__do_drop_test() { local vlan=$1; shift local limit=$1; shift @@ -637,6 +632,7 @@ do_drop_test() RET=0 start_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) $h3_mac + defer stop_traffic_sleep $! # Create a bit of a backlog and observe no mirroring due to drops. qevent_rule_install_$subtest @@ -671,9 +667,12 @@ do_drop_test() check_fail $? "$((now - base)) spurious packets observed after uninstall" log_test "TC $((vlan - 10)): ${trigger}ped packets $subtest'd" +} - stop_traffic - sleep 1 +do_drop_test() +{ + in_defer_scope \ + __do_drop_test "$@" } qevent_rule_install_mirror() diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh index 576067b207a8..8902a115d9cd 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh @@ -80,36 +80,34 @@ uninstall_qdisc() ecn_test() { install_qdisc ecn + defer uninstall_qdisc do_ecn_test 10 $BACKLOG1 do_ecn_test 11 $BACKLOG2 - - uninstall_qdisc } ecn_test_perband() { install_qdisc ecn + defer uninstall_qdisc do_ecn_test_perband 10 $BACKLOG1 do_ecn_test_perband 11 $BACKLOG2 - - uninstall_qdisc } ecn_nodrop_test() { install_qdisc ecn nodrop + defer uninstall_qdisc do_ecn_nodrop_test 10 $BACKLOG1 do_ecn_nodrop_test 11 $BACKLOG2 - - uninstall_qdisc } red_test() { install_qdisc + defer uninstall_qdisc # Make sure that we get the non-zero value if there is any. local cur=$(busywait 1100 until_counter_is "> 0" \ @@ -120,50 +118,44 @@ red_test() do_red_test 10 $BACKLOG1 do_red_test 11 $BACKLOG2 - - uninstall_qdisc } mc_backlog_test() { install_qdisc + defer uninstall_qdisc # Note that the backlog numbers here do not correspond to RED # configuration, but are arbitrary. do_mc_backlog_test 10 $BACKLOG1 do_mc_backlog_test 11 $BACKLOG2 - - uninstall_qdisc } red_mirror_test() { install_qdisc qevent early_drop block 10 + defer uninstall_qdisc do_drop_mirror_test 10 $BACKLOG1 early_drop do_drop_mirror_test 11 $BACKLOG2 early_drop - - uninstall_qdisc } red_trap_test() { install_qdisc qevent early_drop block 10 + defer uninstall_qdisc do_drop_trap_test 10 $BACKLOG1 early_drop do_drop_trap_test 11 $BACKLOG2 early_drop - - uninstall_qdisc } ecn_mirror_test() { install_qdisc ecn qevent mark block 10 + defer uninstall_qdisc do_mark_mirror_test 10 $BACKLOG1 do_mark_mirror_test 11 $BACKLOG2 - - uninstall_qdisc } bail_on_lldpad "configure DCB" "configure Qdiscs" diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh index 159108d02895..e9043771787b 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh @@ -32,45 +32,51 @@ uninstall_qdisc() ecn_test() { install_qdisc ecn + defer uninstall_qdisc + do_ecn_test 10 $BACKLOG - uninstall_qdisc } ecn_test_perband() { install_qdisc ecn + defer uninstall_qdisc + do_ecn_test_perband 10 $BACKLOG - uninstall_qdisc } ecn_nodrop_test() { install_qdisc ecn nodrop + defer uninstall_qdisc + do_ecn_nodrop_test 10 $BACKLOG - uninstall_qdisc } red_test() { install_qdisc + defer uninstall_qdisc + do_red_test 10 $BACKLOG - uninstall_qdisc } mc_backlog_test() { install_qdisc + defer uninstall_qdisc + # Note that the backlog value here does not correspond to RED # configuration, but is arbitrary. do_mc_backlog_test 10 $BACKLOG - uninstall_qdisc } red_mirror_test() { install_qdisc qevent early_drop block 10 + defer uninstall_qdisc + do_drop_mirror_test 10 $BACKLOG - uninstall_qdisc } bail_on_lldpad "configure DCB" "configure Qdiscs" diff --git a/tools/testing/selftests/net/forwarding/sch_red.sh b/tools/testing/selftests/net/forwarding/sch_red.sh index 17f28644568e..af166662b78a 100755 --- a/tools/testing/selftests/net/forwarding/sch_red.sh +++ b/tools/testing/selftests/net/forwarding/sch_red.sh @@ -53,71 +53,63 @@ PKTSZ=1400 h1_create() { simple_if_init $h1 192.0.2.1/28 + defer simple_if_fini $h1 192.0.2.1/28 + mtu_set $h1 10000 + defer mtu_restore $h1 + tc qdisc replace dev $h1 root handle 1: tbf \ rate 10Mbit burst 10K limit 1M -} - -h1_destroy() -{ - tc qdisc del dev $h1 root - mtu_restore $h1 - simple_if_fini $h1 192.0.2.1/28 + defer tc qdisc del dev $h1 root } h2_create() { simple_if_init $h2 192.0.2.2/28 - mtu_set $h2 10000 -} + defer simple_if_fini $h2 192.0.2.2/28 -h2_destroy() -{ - mtu_restore $h2 - simple_if_fini $h2 192.0.2.2/28 + mtu_set $h2 10000 + defer mtu_restore $h2 } h3_create() { simple_if_init $h3 192.0.2.3/28 - mtu_set $h3 10000 -} + defer simple_if_fini $h3 192.0.2.3/28 -h3_destroy() -{ - mtu_restore $h3 - simple_if_fini $h3 192.0.2.3/28 + mtu_set $h3 10000 + defer mtu_restore $h3 } switch_create() { ip link add dev br up type bridge + defer ip link del dev br + ip link set dev $swp1 up master br + defer ip link set dev $swp1 down nomaster + ip link set dev $swp2 up master br + defer ip link set dev $swp2 down nomaster + ip link set dev $swp3 up master br + defer ip link set dev $swp3 down nomaster mtu_set $swp1 10000 + defer mtu_restore $h1 + mtu_set $swp2 10000 + defer mtu_restore $h2 + mtu_set $swp3 10000 + defer mtu_restore $h3 tc qdisc replace dev $swp3 root handle 1: tbf \ rate 10Mbit burst 10K limit 1M - ip link add name _drop_test up type dummy -} + defer tc qdisc del dev $swp3 root -switch_destroy() -{ - ip link del dev _drop_test - tc qdisc del dev $swp3 root - - mtu_restore $h3 - mtu_restore $h2 - mtu_restore $h1 - - ip link set dev $swp3 down nomaster - ip link set dev $swp2 down nomaster - ip link set dev $swp1 down nomaster - ip link del dev br + ip link add name _drop_test up type dummy + defer ip link del dev _drop_test } setup_prepare() @@ -134,6 +126,7 @@ setup_prepare() h3_mac=$(mac_get $h3) vrf_prepare + defer vrf_cleanup h1_create h2_create @@ -141,18 +134,6 @@ setup_prepare() switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h3_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1 192.0.2.3 " from host 1" @@ -287,6 +268,7 @@ do_ecn_test() $MZ $h1 -p $PKTSZ -A 192.0.2.1 -B 192.0.2.3 -c 0 \ -a own -b $h3_mac -t tcp -q tos=0x01 & + defer stop_traffic $! sleep 1 ecn_test_common "$name" $limit @@ -298,9 +280,6 @@ do_ecn_test() build_backlog $((2 * limit)) udp >/dev/null check_fail $? "UDP traffic went into backlog instead of being early-dropped" log_test "$name backlog > limit: UDP early-dropped" - - stop_traffic - sleep 1 } do_ecn_nodrop_test() @@ -310,6 +289,7 @@ do_ecn_nodrop_test() $MZ $h1 -p $PKTSZ -A 192.0.2.1 -B 192.0.2.3 -c 0 \ -a own -b $h3_mac -t tcp -q tos=0x01 & + defer stop_traffic $! sleep 1 ecn_test_common "$name" $limit @@ -321,9 +301,6 @@ do_ecn_nodrop_test() build_backlog $((2 * limit)) udp >/dev/null check_err $? "UDP traffic was early-dropped instead of getting into backlog" log_test "$name backlog > limit: UDP not dropped" - - stop_traffic - sleep 1 } do_red_test() @@ -336,6 +313,7 @@ do_red_test() # is above limit. $MZ $h1 -p $PKTSZ -A 192.0.2.1 -B 192.0.2.3 -c 0 \ -a own -b $h3_mac -t tcp -q tos=0x01 & + defer stop_traffic $! # Pushing below the queue limit should work. RET=0 @@ -352,9 +330,6 @@ do_red_test() pct=$(check_marking "== 0") check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0." log_test "RED backlog > limit" - - stop_traffic - sleep 1 } do_red_qevent_test() @@ -369,6 +344,7 @@ do_red_qevent_test() $MZ $h1 -p $PKTSZ -A 192.0.2.1 -B 192.0.2.3 -c 0 \ -a own -b $h3_mac -t udp -q & + defer stop_traffic $! sleep 1 tc filter add block 10 pref 1234 handle 102 matchall skip_hw \ @@ -396,9 +372,6 @@ do_red_qevent_test() check_err $? "Dropped packets still observed: 0 expected, $((now - base)) seen" log_test "RED early_dropped packets mirrored" - - stop_traffic - sleep 1 } do_ecn_qevent_test() @@ -410,6 +383,7 @@ do_ecn_qevent_test() $MZ $h1 -p $PKTSZ -A 192.0.2.1 -B 192.0.2.3 -c 0 \ -a own -b $h3_mac -t tcp -q tos=0x01 & + defer stop_traffic $! sleep 1 tc filter add block 10 pref 1234 handle 102 matchall skip_hw \ @@ -428,9 +402,6 @@ do_ecn_qevent_test() tc filter del block 10 pref 1234 handle 102 matchall log_test "ECN marked packets mirrored" - - stop_traffic - sleep 1 } install_qdisc() @@ -451,36 +422,36 @@ uninstall_qdisc() ecn_test() { install_qdisc ecn + defer uninstall_qdisc xfail_on_slow do_ecn_test $BACKLOG - uninstall_qdisc } ecn_nodrop_test() { install_qdisc ecn nodrop + defer uninstall_qdisc xfail_on_slow do_ecn_nodrop_test $BACKLOG - uninstall_qdisc } red_test() { install_qdisc + defer uninstall_qdisc xfail_on_slow do_red_test $BACKLOG - uninstall_qdisc } red_qevent_test() { install_qdisc qevent early_drop block 10 + defer uninstall_qdisc xfail_on_slow do_red_qevent_test $BACKLOG - uninstall_qdisc } ecn_qevent_test() { install_qdisc ecn qevent mark block 10 + defer uninstall_qdisc xfail_on_slow do_ecn_qevent_test $BACKLOG - uninstall_qdisc } trap cleanup EXIT -- cgit v1.2.3 From a1b3741dcfd16bf1e337c89b9fca5fbb9110fbed Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:47 +0200 Subject: selftests: TBF: Use defer for test cleanup Use the defer framework to schedule cleanups as soon as the command is executed. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- .../selftests/net/forwarding/sch_tbf_core.sh | 91 +++++++--------------- .../selftests/net/forwarding/sch_tbf_etsprio.sh | 7 +- .../selftests/net/forwarding/sch_tbf_root.sh | 3 +- 3 files changed, 36 insertions(+), 65 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/forwarding/sch_tbf_core.sh b/tools/testing/selftests/net/forwarding/sch_tbf_core.sh index 9cd884d4a5de..ec309a5086bc 100644 --- a/tools/testing/selftests/net/forwarding/sch_tbf_core.sh +++ b/tools/testing/selftests/net/forwarding/sch_tbf_core.sh @@ -60,68 +60,65 @@ host_create() local host=$1; shift simple_if_init $dev + defer simple_if_fini $dev + mtu_set $dev 10000 + defer mtu_restore $dev vlan_create $dev 10 v$dev $(ipaddr $host 10)/28 + defer vlan_destroy $dev 10 ip link set dev $dev.10 type vlan egress 0:0 vlan_create $dev 11 v$dev $(ipaddr $host 11)/28 + defer vlan_destroy $dev 11 ip link set dev $dev.11 type vlan egress 0:1 } -host_destroy() -{ - local dev=$1; shift - - vlan_destroy $dev 11 - vlan_destroy $dev 10 - mtu_restore $dev - simple_if_fini $dev -} - h1_create() { host_create $h1 1 } -h1_destroy() -{ - host_destroy $h1 -} - h2_create() { host_create $h2 2 tc qdisc add dev $h2 clsact + defer tc qdisc del dev $h2 clsact + tc filter add dev $h2 ingress pref 1010 prot 802.1q \ flower $TCFLAGS vlan_id 10 action pass tc filter add dev $h2 ingress pref 1011 prot 802.1q \ flower $TCFLAGS vlan_id 11 action pass } -h2_destroy() -{ - tc qdisc del dev $h2 clsact - host_destroy $h2 -} - switch_create() { local intf local vlan ip link add dev br10 type bridge + defer ip link del dev br10 + ip link add dev br11 type bridge + defer ip link del dev br11 for intf in $swp1 $swp2; do ip link set dev $intf up + defer ip link set dev $intf down + mtu_set $intf 10000 + defer mtu_restore $intf for vlan in 10 11; do vlan_create $intf $vlan + defer vlan_destroy $intf $vlan + ip link set dev $intf.$vlan master br$vlan + defer ip link set dev $intf.$vlan nomaster + ip link set dev $intf.$vlan up + defer ip link set dev $intf.$vlan down done done @@ -130,34 +127,10 @@ switch_create() done ip link set dev br10 up - ip link set dev br11 up -} - -switch_destroy() -{ - local intf - local vlan - - # A test may have been interrupted mid-run, with Qdisc installed. Delete - # it here. - tc qdisc del dev $swp2 root 2>/dev/null - - ip link set dev br11 down - ip link set dev br10 down + defer ip link set dev br10 down - for intf in $swp2 $swp1; do - for vlan in 11 10; do - ip link set dev $intf.$vlan down - ip link set dev $intf.$vlan nomaster - vlan_destroy $intf $vlan - done - - mtu_restore $intf - ip link set dev $intf down - done - - ip link del dev br11 - ip link del dev br10 + ip link set dev br11 up + defer ip link set dev br11 down } setup_prepare() @@ -177,23 +150,13 @@ setup_prepare() h2_mac=$(mac_get $h2) vrf_prepare + defer vrf_cleanup h1_create h2_create switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1.10 $(ipaddr 2 10) " vlan 10" @@ -207,18 +170,18 @@ tbf_get_counter() tc_rule_stats_get $h2 10$vlan ingress .bytes } -do_tbf_test() +__tbf_test() { local vlan=$1; shift local mbit=$1; shift start_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 2 $vlan) $h2_mac + defer stop_traffic $! sleep 5 # Wait for the burst to dwindle local t2=$(busywait_for_counter 1000 +1 tbf_get_counter $vlan) sleep 10 local t3=$(tbf_get_counter $vlan) - stop_traffic RET=0 @@ -231,3 +194,9 @@ do_tbf_test() log_test "TC $((vlan - 10)): TBF rate ${mbit}Mbit" } + +do_tbf_test() +{ + in_defer_scope \ + __tbf_test "$@" +} diff --git a/tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh b/tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh index df9bcd6a811a..c182a04282bc 100644 --- a/tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh +++ b/tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh @@ -30,8 +30,9 @@ tbf_test() # This test is used for both ETS and PRIO. Even though we only need two # bands, PRIO demands a minimum of three. tc qdisc add dev $swp2 root handle 10: $QDISC 3 priomap 2 1 0 + defer tc qdisc del dev $swp2 root + tbf_test_one 128K - tc qdisc del dev $swp2 root } tbf_root_test() @@ -42,6 +43,8 @@ tbf_root_test() tc qdisc replace dev $swp2 root handle 1: \ tbf rate 400Mbit burst $bs limit 1M + defer tc qdisc del dev $swp2 root + tc qdisc replace dev $swp2 parent 1:1 handle 10: \ $QDISC 3 priomap 2 1 0 tc qdisc replace dev $swp2 parent 10:3 handle 103: \ @@ -53,8 +56,6 @@ tbf_root_test() do_tbf_test 10 400 $bs do_tbf_test 11 400 $bs - - tc qdisc del dev $swp2 root } if type -t sch_tbf_pre_hook >/dev/null; then diff --git a/tools/testing/selftests/net/forwarding/sch_tbf_root.sh b/tools/testing/selftests/net/forwarding/sch_tbf_root.sh index 96c997be0d03..9f20320f8d84 100755 --- a/tools/testing/selftests/net/forwarding/sch_tbf_root.sh +++ b/tools/testing/selftests/net/forwarding/sch_tbf_root.sh @@ -14,13 +14,14 @@ tbf_test_one() tc qdisc replace dev $swp2 root handle 108: tbf \ rate 400Mbit burst $bs limit 1M + defer tc qdisc del dev $swp2 root + do_tbf_test 10 400 $bs } tbf_test() { tbf_test_one 128K - tc qdisc del dev $swp2 root } if type -t sch_tbf_pre_hook >/dev/null; then -- cgit v1.2.3 From cc3e7ee15ddd0d37251127b7802d4483d7f6cad3 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:48 +0200 Subject: selftests: ETS: Use defer for test cleanup Use the defer framework to schedule cleanups as soon as the command is executed. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- .../testing/selftests/drivers/net/mlxsw/sch_ets.sh | 26 ++++--- tools/testing/selftests/net/forwarding/sch_ets.sh | 7 +- .../selftests/net/forwarding/sch_ets_core.sh | 81 ++++++++-------------- .../selftests/net/forwarding/sch_ets_tests.sh | 14 ++-- 4 files changed, 50 insertions(+), 78 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_ets.sh index 139175fd03e7..4aaceb6b2b60 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_ets.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_ets.sh @@ -21,6 +21,7 @@ switch_create() # Create a bottleneck so that the DWRR process can kick in. tc qdisc replace dev $swp2 root handle 3: tbf rate 1gbit \ burst 128K limit 1G + defer tc qdisc del dev $swp2 root handle 3: ets_switch_create @@ -30,16 +31,27 @@ switch_create() # for the DWRR process. devlink_port_pool_th_save $swp1 0 devlink_port_pool_th_set $swp1 0 12 + defer devlink_port_pool_th_restore $swp1 0 + devlink_tc_bind_pool_th_save $swp1 0 ingress devlink_tc_bind_pool_th_set $swp1 0 ingress 0 12 + defer devlink_tc_bind_pool_th_restore $swp1 0 ingress + devlink_port_pool_th_save $swp2 4 devlink_port_pool_th_set $swp2 4 12 + defer devlink_port_pool_th_restore $swp2 4 + devlink_tc_bind_pool_th_save $swp2 7 egress devlink_tc_bind_pool_th_set $swp2 7 egress 4 5 + defer devlink_tc_bind_pool_th_restore $swp2 7 egress + devlink_tc_bind_pool_th_save $swp2 6 egress devlink_tc_bind_pool_th_set $swp2 6 egress 4 5 + defer devlink_tc_bind_pool_th_restore $swp2 6 egress + devlink_tc_bind_pool_th_save $swp2 5 egress devlink_tc_bind_pool_th_set $swp2 5 egress 4 5 + defer devlink_tc_bind_pool_th_restore $swp2 5 egress # Note: sch_ets_core.sh uses VLAN ingress-qos-map to assign packet # priorities at $swp1 based on their 802.1p headers. ingress-qos-map is @@ -47,20 +59,6 @@ switch_create() # 1:1, which is the mapping currently hard-coded by the driver. } -switch_destroy() -{ - devlink_tc_bind_pool_th_restore $swp2 5 egress - devlink_tc_bind_pool_th_restore $swp2 6 egress - devlink_tc_bind_pool_th_restore $swp2 7 egress - devlink_port_pool_th_restore $swp2 4 - devlink_tc_bind_pool_th_restore $swp1 0 ingress - devlink_port_pool_th_restore $swp1 0 - - ets_switch_destroy - - tc qdisc del dev $swp2 root handle 3: -} - # Callback from sch_ets_tests.sh collect_stats() { diff --git a/tools/testing/selftests/net/forwarding/sch_ets.sh b/tools/testing/selftests/net/forwarding/sch_ets.sh index e60c8b4818cc..1f6f53e284b5 100755 --- a/tools/testing/selftests/net/forwarding/sch_ets.sh +++ b/tools/testing/selftests/net/forwarding/sch_ets.sh @@ -24,15 +24,10 @@ switch_create() # Create a bottleneck so that the DWRR process can kick in. tc qdisc add dev $swp2 root handle 1: tbf \ rate 1Gbit burst 1Mbit latency 100ms + defer tc qdisc del dev $swp2 root PARENT="parent 1:" } -switch_destroy() -{ - ets_switch_destroy - tc qdisc del dev $swp2 root -} - # Callback from sch_ets_tests.sh collect_stats() { diff --git a/tools/testing/selftests/net/forwarding/sch_ets_core.sh b/tools/testing/selftests/net/forwarding/sch_ets_core.sh index f906fcc66572..8f9922c695b0 100644 --- a/tools/testing/selftests/net/forwarding/sch_ets_core.sh +++ b/tools/testing/selftests/net/forwarding/sch_ets_core.sh @@ -166,44 +166,32 @@ h1_create() local i; simple_if_init $h1 + defer simple_if_fini $h1 + mtu_set $h1 9900 + defer mtu_restore $h1 + for i in {0..2}; do vlan_create $h1 1$i v$h1 $(sip $i)/28 + defer vlan_destroy $h1 1$i ip link set dev $h1.1$i type vlan egress 0:$i done } -h1_destroy() -{ - local i - - for i in {0..2}; do - vlan_destroy $h1 1$i - done - mtu_restore $h1 - simple_if_fini $h1 -} - h2_create() { local i simple_if_init $h2 - mtu_set $h2 9900 - for i in {0..2}; do - vlan_create $h2 1$i v$h2 $(dip $i)/28 - done -} + defer simple_if_fini $h2 -h2_destroy() -{ - local i + mtu_set $h2 9900 + defer mtu_restore $h2 for i in {0..2}; do - vlan_destroy $h2 1$i + vlan_create $h2 1$i v$h2 $(dip $i)/28 + defer vlan_destroy $h2 1$i done - mtu_restore $h2 - simple_if_fini $h2 } ets_switch_create() @@ -211,44 +199,45 @@ ets_switch_create() local i ip link set dev $swp1 up + defer ip link set dev $swp1 down + mtu_set $swp1 9900 + defer mtu_restore $swp1 ip link set dev $swp2 up + defer ip link set dev $swp2 down + mtu_set $swp2 9900 + defer mtu_restore $swp2 for i in {0..2}; do vlan_create $swp1 1$i + defer vlan_destroy $swp1 1$i ip link set dev $swp1.1$i type vlan ingress 0:0 1:1 2:2 vlan_create $swp2 1$i + defer vlan_destroy $swp2 1$i ip link add dev br1$i type bridge + defer ip link del dev br1$i + ip link set dev $swp1.1$i master br1$i + defer ip link set dev $swp1.1$i nomaster + ip link set dev $swp2.1$i master br1$i + defer ip link set dev $swp2.1$i nomaster ip link set dev br1$i up - ip link set dev $swp1.1$i up - ip link set dev $swp2.1$i up - done -} + defer ip link set dev br1$i down -ets_switch_destroy() -{ - local i - - ets_delete_qdisc + ip link set dev $swp1.1$i up + defer ip link set dev $swp1.1$i down - for i in {0..2}; do - ip link del dev br1$i - vlan_destroy $swp2 1$i - vlan_destroy $swp1 1$i + ip link set dev $swp2.1$i up + defer ip link set dev $swp2.1$i down done - mtu_restore $swp2 - ip link set dev $swp2 down - - mtu_restore $swp1 - ip link set dev $swp1 down + defer ets_delete_qdisc } setup_prepare() @@ -263,23 +252,13 @@ setup_prepare() hut=$h2 vrf_prepare + defer vrf_cleanup h1_create h2_create switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1.10 $(dip 0) " vlan 10" diff --git a/tools/testing/selftests/net/forwarding/sch_ets_tests.sh b/tools/testing/selftests/net/forwarding/sch_ets_tests.sh index f9d26a7911bb..08240d3e3c87 100644 --- a/tools/testing/selftests/net/forwarding/sch_ets_tests.sh +++ b/tools/testing/selftests/net/forwarding/sch_ets_tests.sh @@ -90,6 +90,7 @@ __ets_dwrr_test() for stream in ${streams[@]}; do ets_start_traffic $stream + defer stop_traffic $! done sleep 10 @@ -120,25 +121,24 @@ __ets_dwrr_test() ${d[0]} ${d[$i]} fi done - - for stream in ${streams[@]}; do - stop_traffic - done } ets_dwrr_test_012() { - __ets_dwrr_test 0 1 2 + in_defer_scope \ + __ets_dwrr_test 0 1 2 } ets_dwrr_test_01() { - __ets_dwrr_test 0 1 + in_defer_scope \ + __ets_dwrr_test 0 1 } ets_dwrr_test_12() { - __ets_dwrr_test 1 2 + in_defer_scope \ + __ets_dwrr_test 1 2 } ets_qdisc_setup() -- cgit v1.2.3 From 979154e90ff83ab63bb1a52f48e442c953452adb Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:49 +0200 Subject: selftests: mlxsw: qos_mc_aware: Use defer for test cleanup Use the defer framework to schedule cleanups as soon as the command is executed. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- .../selftests/drivers/net/mlxsw/qos_mc_aware.sh | 138 ++++++++++----------- 1 file changed, 64 insertions(+), 74 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh index 6d892de43fa8..cd4a5c21360c 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh @@ -73,122 +73,114 @@ source qos_lib.sh h1_create() { simple_if_init $h1 192.0.2.65/28 - mtu_set $h1 10000 -} + defer simple_if_fini $h1 192.0.2.65/28 -h1_destroy() -{ - mtu_restore $h1 - simple_if_fini $h1 192.0.2.65/28 + mtu_set $h1 10000 + defer mtu_restore $h1 } h2_create() { simple_if_init $h2 + defer simple_if_fini $h2 + mtu_set $h2 10000 + defer mtu_restore $h2 vlan_create $h2 111 v$h2 192.0.2.129/28 + defer vlan_destroy $h2 111 ip link set dev $h2.111 type vlan egress-qos-map 0:1 } -h2_destroy() -{ - vlan_destroy $h2 111 - - mtu_restore $h2 - simple_if_fini $h2 -} - h3_create() { simple_if_init $h3 192.0.2.66/28 + defer simple_if_fini $h3 192.0.2.66/28 + mtu_set $h3 10000 + defer mtu_restore $h3 vlan_create $h3 111 v$h3 192.0.2.130/28 -} - -h3_destroy() -{ - vlan_destroy $h3 111 - - mtu_restore $h3 - simple_if_fini $h3 192.0.2.66/28 + defer vlan_destroy $h3 111 } switch_create() { ip link set dev $swp1 up + defer ip link set dev $swp1 down + mtu_set $swp1 10000 + defer mtu_restore $swp1 ip link set dev $swp2 up + defer ip link set dev $swp2 down + mtu_set $swp2 10000 + defer mtu_restore $swp2 ip link set dev $swp3 up + defer ip link set dev $swp3 down + mtu_set $swp3 10000 + defer mtu_restore $swp3 vlan_create $swp2 111 + defer vlan_destroy $swp2 111 + vlan_create $swp3 111 + defer vlan_destroy $swp3 111 tc qdisc replace dev $swp3 root handle 3: tbf rate 1gbit \ burst 128K limit 1G + defer tc qdisc del dev $swp3 root handle 3: + tc qdisc replace dev $swp3 parent 3:3 handle 33: \ prio bands 8 priomap 7 7 7 7 7 7 7 7 + defer tc qdisc del dev $swp3 parent 3:3 handle 33: ip link add name br1 type bridge vlan_filtering 0 + defer ip link del dev br1 ip link set dev br1 addrgenmode none ip link set dev br1 up + ip link set dev $swp1 master br1 + defer ip link set dev $swp1 nomaster + ip link set dev $swp3 master br1 + defer ip link set dev $swp3 nomaster ip link add name br111 type bridge vlan_filtering 0 + defer ip link del dev br111 ip link set dev br111 addrgenmode none ip link set dev br111 up + ip link set dev $swp2.111 master br111 + defer ip link set dev $swp2.111 nomaster + ip link set dev $swp3.111 master br111 + defer ip link set dev $swp3.111 nomaster # Make sure that ingress quotas are smaller than egress so that there is # room for both streams of traffic to be admitted to shared buffer. devlink_port_pool_th_save $swp1 0 devlink_port_pool_th_set $swp1 0 5 + defer devlink_port_pool_th_restore $swp1 0 + devlink_tc_bind_pool_th_save $swp1 0 ingress devlink_tc_bind_pool_th_set $swp1 0 ingress 0 5 + defer devlink_tc_bind_pool_th_restore $swp1 0 ingress devlink_port_pool_th_save $swp2 0 devlink_port_pool_th_set $swp2 0 5 + defer devlink_port_pool_th_restore $swp2 0 + devlink_tc_bind_pool_th_save $swp2 1 ingress devlink_tc_bind_pool_th_set $swp2 1 ingress 0 5 + defer devlink_tc_bind_pool_th_restore $swp2 1 ingress devlink_port_pool_th_save $swp3 4 devlink_port_pool_th_set $swp3 4 12 -} - -switch_destroy() -{ - devlink_port_pool_th_restore $swp3 4 - - devlink_tc_bind_pool_th_restore $swp2 1 ingress - devlink_port_pool_th_restore $swp2 0 - - devlink_tc_bind_pool_th_restore $swp1 0 ingress - devlink_port_pool_th_restore $swp1 0 - - ip link del dev br111 - ip link del dev br1 - - tc qdisc del dev $swp3 parent 3:3 handle 33: - tc qdisc del dev $swp3 root handle 3: - - vlan_destroy $swp3 111 - vlan_destroy $swp2 111 - - mtu_restore $swp3 - ip link set dev $swp3 down - - mtu_restore $swp2 - ip link set dev $swp2 down - - mtu_restore $swp1 - ip link set dev $swp1 down + defer devlink_port_pool_th_restore $swp3 4 } setup_prepare() @@ -205,6 +197,7 @@ setup_prepare() h3mac=$(mac_get $h3) vrf_prepare + defer vrf_cleanup h1_create h2_create @@ -212,45 +205,45 @@ setup_prepare() switch_create } -cleanup() +ping_ipv4() { - pre_cleanup + ping_test $h2 192.0.2.130 +} - switch_destroy - h3_destroy - h2_destroy - h1_destroy +__run_uc_measure_rate() +{ + local what=$1; shift + local -a uc_rate + + start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac + defer stop_traffic $! + + uc_rate=($(measure_rate $swp2 $h3 rx_octets_prio_1 "$what")) + check_err $? "Could not get high enough $what ingress rate" - vrf_cleanup + echo ${uc_rate[@]} } -ping_ipv4() +run_uc_measure_rate() { - ping_test $h2 192.0.2.130 + in_defer_scope __run_uc_measure_rate "$@" } test_mc_aware() { RET=0 - local -a uc_rate - start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac - uc_rate=($(measure_rate $swp2 $h3 rx_octets_prio_1 "UC-only")) - check_err $? "Could not get high enough UC-only ingress rate" - stop_traffic + local -a uc_rate=($(run_uc_measure_rate "UC-only")) local ucth1=${uc_rate[1]} start_traffic $h1 192.0.2.65 bc bc + defer stop_traffic $! local d0=$(date +%s) local t0=$(ethtool_stats_get $h3 rx_octets_prio_0) local u0=$(ethtool_stats_get $swp1 rx_octets_prio_0) - local -a uc_rate_2 - start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac - uc_rate_2=($(measure_rate $swp2 $h3 rx_octets_prio_1 "UC+MC")) - check_err $? "Could not get high enough UC+MC ingress rate" - stop_traffic + local -a uc_rate_2=($(run_uc_measure_rate "UC+MC")) local ucth2=${uc_rate_2[1]} local d1=$(date +%s) @@ -272,8 +265,6 @@ test_mc_aware() local mc_ir=$(rate $u0 $u1 $interval) local mc_er=$(rate $t0 $t1 $interval) - stop_traffic - log_test "UC performance under MC overload" echo "UC-only throughput $(humanize $ucth1)" @@ -297,6 +288,7 @@ test_uc_aware() RET=0 start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac + defer stop_traffic $! local d0=$(date +%s) local t0=$(ethtool_stats_get $h3 rx_octets_prio_1) @@ -326,8 +318,6 @@ test_uc_aware() ((attempts == passes)) check_err $? - stop_traffic - log_test "MC performance under UC overload" echo " ingress UC throughput $(humanize ${uc_ir})" echo " egress UC throughput $(humanize ${uc_er})" -- cgit v1.2.3 From 424745af5271a5990caa25358b9710db0349221c Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:50 +0200 Subject: selftests: mlxsw: qos_ets_strict: Use defer for test cleanup Use the defer framework to schedule cleanups as soon as the command is executed. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- .../selftests/drivers/net/mlxsw/qos_ets_strict.sh | 167 +++++++++++---------- 1 file changed, 85 insertions(+), 82 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_ets_strict.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_ets_strict.sh index fee74f215cec..d5b6f2cc9a29 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/qos_ets_strict.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/qos_ets_strict.sh @@ -58,65 +58,62 @@ source qos_lib.sh h1_create() { simple_if_init $h1 + defer simple_if_fini $h1 + mtu_set $h1 10000 + defer mtu_restore $h1 vlan_create $h1 111 v$h1 192.0.2.33/28 + defer vlan_destroy $h1 111 ip link set dev $h1.111 type vlan egress-qos-map 0:1 } -h1_destroy() -{ - vlan_destroy $h1 111 - - mtu_restore $h1 - simple_if_fini $h1 -} - h2_create() { simple_if_init $h2 + defer simple_if_fini $h2 + mtu_set $h2 10000 + defer mtu_restore $h2 vlan_create $h2 222 v$h2 192.0.2.65/28 + defer vlan_destroy $h2 222 ip link set dev $h2.222 type vlan egress-qos-map 0:2 } -h2_destroy() -{ - vlan_destroy $h2 222 - - mtu_restore $h2 - simple_if_fini $h2 -} - h3_create() { simple_if_init $h3 + defer simple_if_fini $h3 + mtu_set $h3 10000 + defer mtu_restore $h3 vlan_create $h3 111 v$h3 192.0.2.34/28 - vlan_create $h3 222 v$h3 192.0.2.66/28 -} - -h3_destroy() -{ - vlan_destroy $h3 222 - vlan_destroy $h3 111 + defer vlan_destroy $h3 111 - mtu_restore $h3 - simple_if_fini $h3 + vlan_create $h3 222 v$h3 192.0.2.66/28 + defer vlan_destroy $h3 222 } switch_create() { ip link set dev $swp1 up + defer ip link set dev $swp1 down + mtu_set $swp1 10000 + defer mtu_restore $swp1 ip link set dev $swp2 up + defer ip link set dev $swp2 down + mtu_set $swp2 10000 + defer mtu_restore $swp2 # prio n -> TC n, strict scheduling lldptool -T -i $swp3 -V ETS-CFG up2tc=0:0,1:1,2:2,3:3,4:4,5:5,6:6,7:7 + defer lldptool -T -i $swp3 -V ETS-CFG up2tc=0:0,1:0,2:0,3:0,4:0,5:0,6:0,7:0 + lldptool -T -i $swp3 -V ETS-CFG tsa=$( )"0:strict,"$( )"1:strict,"$( @@ -129,85 +126,90 @@ switch_create() sleep 1 ip link set dev $swp3 up + defer ip link set dev $swp3 down + mtu_set $swp3 10000 + defer mtu_restore $swp3 + tc qdisc replace dev $swp3 root handle 101: tbf rate 1gbit \ burst 128K limit 1G + defer tc qdisc del dev $swp3 root handle 101: vlan_create $swp1 111 + defer vlan_destroy $swp1 111 + vlan_create $swp2 222 + defer vlan_destroy $swp2 222 + vlan_create $swp3 111 + defer vlan_destroy $swp3 111 + vlan_create $swp3 222 + defer vlan_destroy $swp3 222 ip link add name br111 type bridge vlan_filtering 0 + defer ip link del dev br111 ip link set dev br111 addrgenmode none + ip link set dev br111 up + defer ip link set dev br111 down + ip link set dev $swp1.111 master br111 + defer ip link set dev $swp1.111 nomaster + ip link set dev $swp3.111 master br111 + defer ip link set dev $swp3.111 nomaster ip link add name br222 type bridge vlan_filtering 0 + defer ip link del dev br222 ip link set dev br222 addrgenmode none + ip link set dev br222 up + defer ip link set dev br222 down + ip link set dev $swp2.222 master br222 + defer ip link set dev $swp2.222 nomaster + ip link set dev $swp3.222 master br222 + defer ip link set dev $swp3.222 nomaster # Make sure that ingress quotas are smaller than egress so that there is # room for both streams of traffic to be admitted to shared buffer. devlink_pool_size_thtype_save 0 devlink_pool_size_thtype_set 0 dynamic 10000000 + defer devlink_pool_size_thtype_restore 0 + devlink_pool_size_thtype_save 4 devlink_pool_size_thtype_set 4 dynamic 10000000 + defer devlink_pool_size_thtype_restore 4 devlink_port_pool_th_save $swp1 0 devlink_port_pool_th_set $swp1 0 6 + defer devlink_port_pool_th_restore $swp1 0 + devlink_tc_bind_pool_th_save $swp1 1 ingress devlink_tc_bind_pool_th_set $swp1 1 ingress 0 6 + defer devlink_tc_bind_pool_th_restore $swp1 1 ingress devlink_port_pool_th_save $swp2 0 devlink_port_pool_th_set $swp2 0 6 + defer devlink_port_pool_th_restore $swp2 0 + devlink_tc_bind_pool_th_save $swp2 2 ingress devlink_tc_bind_pool_th_set $swp2 2 ingress 0 6 + defer devlink_tc_bind_pool_th_restore $swp2 2 ingress devlink_tc_bind_pool_th_save $swp3 1 egress devlink_tc_bind_pool_th_set $swp3 1 egress 4 7 + defer devlink_tc_bind_pool_th_restore $swp3 1 egress + devlink_tc_bind_pool_th_save $swp3 2 egress devlink_tc_bind_pool_th_set $swp3 2 egress 4 7 + defer devlink_tc_bind_pool_th_restore $swp3 2 egress + devlink_port_pool_th_save $swp3 4 devlink_port_pool_th_set $swp3 4 7 -} - -switch_destroy() -{ - devlink_port_pool_th_restore $swp3 4 - devlink_tc_bind_pool_th_restore $swp3 2 egress - devlink_tc_bind_pool_th_restore $swp3 1 egress - - devlink_tc_bind_pool_th_restore $swp2 2 ingress - devlink_port_pool_th_restore $swp2 0 - - devlink_tc_bind_pool_th_restore $swp1 1 ingress - devlink_port_pool_th_restore $swp1 0 - - devlink_pool_size_thtype_restore 4 - devlink_pool_size_thtype_restore 0 - - ip link del dev br222 - ip link del dev br111 - - vlan_destroy $swp3 222 - vlan_destroy $swp3 111 - vlan_destroy $swp2 222 - vlan_destroy $swp1 111 - - tc qdisc del dev $swp3 root handle 101: - mtu_restore $swp3 - ip link set dev $swp3 down - lldptool -T -i $swp3 -V ETS-CFG up2tc=0:0,1:0,2:0,3:0,4:0,5:0,6:0,7:0 - - mtu_restore $swp2 - ip link set dev $swp2 down - - mtu_restore $swp1 - ip link set dev $swp1 down + defer devlink_port_pool_th_restore $swp3 4 } setup_prepare() @@ -224,6 +226,7 @@ setup_prepare() h3mac=$(mac_get $h3) vrf_prepare + defer vrf_cleanup h1_create h2_create @@ -231,18 +234,6 @@ setup_prepare() switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h3_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1 192.0.2.34 " from H1" @@ -261,21 +252,38 @@ rel() " } +__run_hi_measure_rate() +{ + local what=$1; shift + local -a uc_rate + + start_traffic $h2.222 192.0.2.65 192.0.2.66 $h3mac + defer stop_traffic $! + + uc_rate=($(measure_rate $swp2 $h3 rx_octets_prio_2 "$what")) + check_err $? "Could not get high enough $what ingress rate" + + echo ${uc_rate[@]} +} + +run_hi_measure_rate() +{ + in_defer_scope __run_hi_measure_rate "$@" +} + test_ets_strict() { RET=0 # Run high-prio traffic on its own. - start_traffic $h2.222 192.0.2.65 192.0.2.66 $h3mac local -a rate_2 - rate_2=($(measure_rate $swp2 $h3 rx_octets_prio_2 "prio 2")) - check_err $? "Could not get high enough prio-2 ingress rate" + rate_2=($(run_hi_measure_rate "prio 2")) local rate_2_in=${rate_2[0]} local rate_2_eg=${rate_2[1]} - stop_traffic # $h2.222 # Start low-prio stream. start_traffic $h1.111 192.0.2.33 192.0.2.34 $h3mac + defer stop_traffic $! local -a rate_1 rate_1=($(measure_rate $swp1 $h3 rx_octets_prio_1 "prio 1")) @@ -290,14 +298,9 @@ test_ets_strict() check_err $(bc <<< "$rel21 > 105") # Start the high-prio stream--now both streams run. - start_traffic $h2.222 192.0.2.65 192.0.2.66 $h3mac - rate_3=($(measure_rate $swp2 $h3 rx_octets_prio_2 "prio 2 w/ 1")) - check_err $? "Could not get high enough prio-2 ingress rate with prio-1" + rate_3=($(run_hi_measure_rate "prio 2+1")) local rate_3_in=${rate_3[0]} local rate_3_eg=${rate_3[1]} - stop_traffic # $h2.222 - - stop_traffic # $h1.111 # High-prio should have about the same throughput whether or not # low-prio is in the system. -- cgit v1.2.3 From 919419a8870b33405ef9b0e34e837d407e3888f5 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:51 +0200 Subject: selftests: mlxsw: qos_max_descriptors: Use defer for test cleanup Use the defer framework to schedule cleanups as soon as the command is executed. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- .../drivers/net/mlxsw/qos_max_descriptors.sh | 118 +++++++-------------- 1 file changed, 41 insertions(+), 77 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_max_descriptors.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_max_descriptors.sh index 5ac4f795e333..2b5d2c2751d5 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/qos_max_descriptors.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/qos_max_descriptors.sh @@ -69,127 +69,103 @@ mlxsw_only_on_spectrum 2+ || exit h1_create() { simple_if_init $h1 + defer simple_if_fini $h1 vlan_create $h1 111 v$h1 192.0.2.33/28 + defer vlan_destroy $h1 111 ip link set dev $h1.111 type vlan egress-qos-map 0:1 } -h1_destroy() -{ - vlan_destroy $h1 111 - - simple_if_fini $h1 -} - h2_create() { simple_if_init $h2 + defer simple_if_fini $h2 vlan_create $h2 111 v$h2 192.0.2.34/28 -} - -h2_destroy() -{ - vlan_destroy $h2 111 - - simple_if_fini $h2 + defer vlan_destroy $h2 111 } switch_create() { # pools # ----- + # devlink_pool_size_thtype_restore needs to be done first so that we can + # reset the various limits to values that are only valid for the + # original static / dynamic setting. devlink_pool_size_thtype_save 1 - devlink_pool_size_thtype_save 6 - - devlink_port_pool_th_save $swp1 1 - devlink_port_pool_th_save $swp2 6 - - devlink_tc_bind_pool_th_save $swp1 1 ingress - devlink_tc_bind_pool_th_save $swp2 1 egress - devlink_pool_size_thtype_set 1 dynamic $MAX_POOL_SIZE + defer_prio devlink_pool_size_thtype_restore 1 + + devlink_pool_size_thtype_save 6 devlink_pool_size_thtype_set 6 static $MAX_POOL_SIZE + defer_prio devlink_pool_size_thtype_restore 6 # $swp1 # ----- ip link set dev $swp1 up + defer ip link set dev $swp1 down + vlan_create $swp1 111 + defer vlan_destroy $swp1 111 ip link set dev $swp1.111 type vlan ingress-qos-map 0:0 1:1 + devlink_port_pool_th_save $swp1 1 devlink_port_pool_th_set $swp1 1 16 + defer devlink_tc_bind_pool_th_restore $swp1 1 ingress + + devlink_tc_bind_pool_th_save $swp1 1 ingress devlink_tc_bind_pool_th_set $swp1 1 ingress 1 16 + defer devlink_port_pool_th_restore $swp1 1 tc qdisc replace dev $swp1 root handle 1: \ ets bands 8 strict 8 priomap 7 6 + defer tc qdisc del dev $swp1 root + dcb buffer set dev $swp1 prio-buffer all:0 1:1 + defer dcb buffer set dev $swp1 prio-buffer all:0 # $swp2 # ----- ip link set dev $swp2 up + defer ip link set dev $swp2 down + vlan_create $swp2 111 + defer vlan_destroy $swp2 111 ip link set dev $swp2.111 type vlan egress-qos-map 0:0 1:1 + devlink_port_pool_th_save $swp2 6 devlink_port_pool_th_set $swp2 6 $MAX_POOL_SIZE + defer devlink_tc_bind_pool_th_restore $swp2 1 egress + + devlink_tc_bind_pool_th_save $swp2 1 egress devlink_tc_bind_pool_th_set $swp2 1 egress 6 $MAX_POOL_SIZE + defer devlink_port_pool_th_restore $swp2 6 tc qdisc replace dev $swp2 root handle 1: tbf rate $SHAPER_RATE \ burst 128K limit 500M + defer tc qdisc del dev $swp2 root + tc qdisc replace dev $swp2 parent 1:1 handle 11: \ ets bands 8 strict 8 priomap 7 6 + defer tc qdisc del dev $swp2 parent 1:1 handle 11: # bridge # ------ ip link add name br1 type bridge vlan_filtering 0 + defer ip link del dev br1 + ip link set dev $swp1.111 master br1 + defer ip link set dev $swp1.111 nomaster + ip link set dev br1 up + defer ip link set dev br1 down ip link set dev $swp2.111 master br1 -} - -switch_destroy() -{ - # Do this first so that we can reset the limits to values that are only - # valid for the original static / dynamic setting. - devlink_pool_size_thtype_restore 6 - devlink_pool_size_thtype_restore 1 - - # bridge - # ------ - - ip link set dev $swp2.111 nomaster - - ip link set dev br1 down - ip link set dev $swp1.111 nomaster - ip link del dev br1 - - # $swp2 - # ----- - - tc qdisc del dev $swp2 parent 1:1 handle 11: - tc qdisc del dev $swp2 root - - devlink_tc_bind_pool_th_restore $swp2 1 egress - devlink_port_pool_th_restore $swp2 6 - - vlan_destroy $swp2 111 - ip link set dev $swp2 down - - # $swp1 - # ----- - - dcb buffer set dev $swp1 prio-buffer all:0 - tc qdisc del dev $swp1 root - - devlink_tc_bind_pool_th_restore $swp1 1 ingress - devlink_port_pool_th_restore $swp1 1 - - vlan_destroy $swp1 111 - ip link set dev $swp1 down + defer ip link set dev $swp2.111 nomaster } setup_prepare() @@ -203,23 +179,13 @@ setup_prepare() h2mac=$(mac_get $h2) vrf_prepare + defer vrf_cleanup h1_create h2_create switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1 192.0.2.34 " h1->h2" @@ -251,6 +217,7 @@ max_descriptors() log_info "Send many small packets, packet size = $pktsize bytes" start_traffic_pktsize $pktsize $h1.111 192.0.2.33 192.0.2.34 $h2mac + defer stop_traffic $! # Sleep to wait for congestion. sleep 5 @@ -268,9 +235,6 @@ max_descriptors() check_err $(bc <<< "$perc_used < $exp_perc_used") \ "Expected > $exp_perc_used% of descriptors, handle $perc_used%" - stop_traffic - sleep 1 - log_test "Maximum descriptors usage. The percentage used is $perc_used%" } -- cgit v1.2.3 From cebd281f3c753dcbd48b455bdbc6549889196aa0 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 17 Oct 2024 11:45:52 +0200 Subject: selftests: mlxsw: devlink_trap_police: Use defer for test cleanup Use the defer framework to schedule cleanups as soon as the command is executed. Note that the start_traffic commands in __burst_test() are each sending a fixed number of packets (note the -c flag) and then ending. They therefore do not need a matching stop_traffic. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni --- .../drivers/net/mlxsw/devlink_trap_policer.sh | 85 +++++++++------------- 1 file changed, 36 insertions(+), 49 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh index 0bd5ffc218ac..29a672c2270f 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh @@ -45,63 +45,52 @@ source $lib_dir/devlink_lib.sh h1_create() { simple_if_init $h1 192.0.2.1/24 + defer simple_if_fini $h1 192.0.2.1/24 + mtu_set $h1 10000 + defer mtu_restore $h1 ip -4 route add default vrf v$h1 nexthop via 192.0.2.2 -} - -h1_destroy() -{ - ip -4 route del default vrf v$h1 nexthop via 192.0.2.2 - - mtu_restore $h1 - simple_if_fini $h1 192.0.2.1/24 + defer ip -4 route del default vrf v$h1 nexthop via 192.0.2.2 } h2_create() { simple_if_init $h2 198.51.100.1/24 + defer simple_if_fini $h2 198.51.100.1/24 + mtu_set $h2 10000 + defer mtu_restore $h2 ip -4 route add default vrf v$h2 nexthop via 198.51.100.2 -} - -h2_destroy() -{ - ip -4 route del default vrf v$h2 nexthop via 198.51.100.2 - - mtu_restore $h2 - simple_if_fini $h2 198.51.100.1/24 + defer ip -4 route del default vrf v$h2 nexthop via 198.51.100.2 } router_create() { ip link set dev $rp1 up + defer ip link set dev $rp1 down + ip link set dev $rp2 up + defer ip link set dev $rp2 down __addr_add_del $rp1 add 192.0.2.2/24 + defer __addr_add_del $rp1 del 192.0.2.2/24 + __addr_add_del $rp2 add 198.51.100.2/24 + defer __addr_add_del $rp2 del 198.51.100.2/24 + mtu_set $rp1 10000 + defer mtu_restore $rp1 + mtu_set $rp2 10000 + defer mtu_restore $rp2 ip -4 route add blackhole 198.51.100.100 + defer ip -4 route del blackhole 198.51.100.100 devlink trap set $DEVLINK_DEV trap blackhole_route action trap -} - -router_destroy() -{ - devlink trap set $DEVLINK_DEV trap blackhole_route action drop - - ip -4 route del blackhole 198.51.100.100 - - mtu_restore $rp2 - mtu_restore $rp1 - __addr_add_del $rp2 del 198.51.100.2/24 - __addr_add_del $rp1 del 192.0.2.2/24 - - ip link set dev $rp2 down - ip link set dev $rp1 down + defer devlink trap set $DEVLINK_DEV trap blackhole_route action drop } setup_prepare() @@ -114,7 +103,11 @@ setup_prepare() rp1_mac=$(mac_get $rp1) + # Reload to ensure devlink-trap settings are back to default. + defer devlink_reload + vrf_prepare + defer vrf_cleanup h1_create h2_create @@ -122,21 +115,6 @@ setup_prepare() router_create } -cleanup() -{ - pre_cleanup - - router_destroy - - h2_destroy - h1_destroy - - vrf_cleanup - - # Reload to ensure devlink-trap settings are back to default. - devlink_reload -} - rate_limits_test() { RET=0 @@ -214,7 +192,10 @@ __rate_test() # by the policer. Make sure measured received rate is about 1000 pps log_info "=== Tx rate: Highest, Policer rate: 1000 pps ===" + defer_scope_push + start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac + defer stop_traffic $! sleep 5 # Take measurements when rate is stable @@ -229,13 +210,16 @@ __rate_test() check_err $? "Expected non-zero policer drop rate, got 0" log_info "Measured policer drop rate of $drop_rate pps" - stop_traffic + defer_scope_pop # Send packets at a rate of 1000 pps and make sure they are not dropped # by the policer log_info "=== Tx rate: 1000 pps, Policer rate: 1000 pps ===" + defer_scope_push + start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac -d 1msec + defer stop_traffic $! sleep 5 # Take measurements when rate is stable @@ -244,7 +228,7 @@ __rate_test() check_err $? "Expected zero policer drop rate, got a drop rate of $drop_rate pps" log_info "Measured policer drop rate of $drop_rate pps" - stop_traffic + defer_scope_pop # Unbind the policer and send packets at highest possible rate. Make # sure they are not dropped by the policer and that the measured @@ -253,7 +237,10 @@ __rate_test() devlink trap group set $DEVLINK_DEV group l3_drops nopolicer + defer_scope_push + start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac + defer stop_traffic $! rate=$(trap_rate_get) (( rate > 1000 )) @@ -265,7 +252,7 @@ __rate_test() check_err $? "Expected zero policer drop rate, got a drop rate of $drop_rate pps" log_info "Measured policer drop rate of $drop_rate pps" - stop_traffic + defer_scope_pop log_test "Trap policer rate" } -- cgit v1.2.3 From 867d13a75488d5c20256e93186d9cb6361fb75a4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Asbj=C3=B8rn=20Sloth=20T=C3=B8nnesen?= Date: Thu, 17 Oct 2024 09:47:02 +0000 Subject: tools: ynl-gen: use big-endian netlink attribute types MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change ynl-gen-c.py to use NLA_BE16 and NLA_BE32 types to represent big-endian u16 and u32 ynl types. Doing this enables those attributes to have range checks applied, as the validator will then convert to host endianness prior to validation. The autogenerated kernel/uapi code have been regenerated by running: ./tools/net/ynl/ynl-regen.sh -f This changes the policy types of the following attributes: FOU_ATTR_PORT (NLA_U16 -> NLA_BE16) FOU_ATTR_PEER_PORT (NLA_U16 -> NLA_BE16) These two are used with nla_get_be16/nla_put_be16(). MPTCP_PM_ADDR_ATTR_ADDR4 (NLA_U32 -> NLA_BE32) This one is used with nla_get_in_addr/nla_put_in_addr(), which uses nla_get_be32/nla_put_be32(). IOWs the generated changes are AFAICT aligned with their implementations. The generated userspace code remains identical, and have been verified by comparing the output generated by the following command: make -C tools/net/ynl/generated Signed-off-by: Asbjørn Sloth Tønnesen Reviewed-by: Simon Horman Link: https://patch.msgid.link/20241017094704.3222173-1-ast@fiberby.net Signed-off-by: Paolo Abeni --- tools/net/ynl/ynl-gen-c.py | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py index d64cb2b49c44..1a825b4081b2 100755 --- a/tools/net/ynl/ynl-gen-c.py +++ b/tools/net/ynl/ynl-gen-c.py @@ -167,7 +167,10 @@ class Type(SpecAttr): return '{ .type = ' + policy + ', }' def attr_policy(self, cw): - policy = c_upper('nla-' + self.attr['type']) + policy = f'NLA_{c_upper(self.type)}' + if self.attr.get('byte-order') == 'big-endian': + if self.type in {'u16', 'u32'}: + policy = f'NLA_BE{self.type[1:]}' spec = self._attr_policy(policy) cw.p(f"\t[{self.enum_name}] = {spec},") -- cgit v1.2.3 From 637c730998b8f440dc5d0c6bae254fbf19143ea4 Mon Sep 17 00:00:00 2001 From: Michael Vetter Date: Thu, 17 Oct 2024 22:01:30 +0200 Subject: selftests: livepatch: rename KLP_SYSFS_DIR to SYSFS_KLP_DIR This naming makes more sense according to the directory structure. Especially when we later add more paths. Addtionally replace `/sys/kernel/livepatch` with `$SYSFS_KLP_DIR` in the livepatch test files. Signed-off-by: Michael Vetter Reviewed-by: Miroslav Benes Reviewed-by: Joe Lawrence Tested-by: Marcos Paulo de Souza Reviewed-by: Marcos Paulo de Souza Reviewed-by: Petr Mladek Tested-by: Petr Mladek Link: https://lore.kernel.org/r/20241017200132.21946-2-mvetter@suse.com [pmladek@suse.com: Fix corrupted substitution] Signed-off-by: Petr Mladek --- tools/testing/selftests/livepatch/functions.sh | 16 +++++++-------- .../testing/selftests/livepatch/test-callbacks.sh | 24 +++++++++++----------- tools/testing/selftests/livepatch/test-ftrace.sh | 2 +- .../testing/selftests/livepatch/test-livepatch.sh | 12 +++++------ tools/testing/selftests/livepatch/test-state.sh | 8 ++++---- tools/testing/selftests/livepatch/test-syscall.sh | 2 +- tools/testing/selftests/livepatch/test-sysfs.sh | 8 ++++---- 7 files changed, 36 insertions(+), 36 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index fc4c6a016d38..7bdfe668127b 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -6,7 +6,7 @@ MAX_RETRIES=600 RETRY_INTERVAL=".1" # seconds -KLP_SYSFS_DIR="/sys/kernel/livepatch" +SYSFS_KLP_DIR="/sys/kernel/livepatch" # Kselftest framework requirement - SKIP code is 4 ksft_skip=4 @@ -183,7 +183,7 @@ function load_lp_nowait() { __load_mod "$mod" "$@" # Wait for livepatch in sysfs ... - loop_until '[[ -e "/sys/kernel/livepatch/$mod" ]]' || + loop_until '[[ -e "$SYSFS_KLP_DIR/$mod" ]]' || die "failed to load module $mod (sysfs)" } @@ -196,7 +196,7 @@ function load_lp() { load_lp_nowait "$mod" "$@" # Wait until the transition finishes ... - loop_until 'grep -q '^0$' /sys/kernel/livepatch/$mod/transition' || + loop_until 'grep -q '^0$' $SYSFS_KLP_DIR/$mod/transition' || die "failed to complete transition" } @@ -246,12 +246,12 @@ function unload_lp() { function disable_lp() { local mod="$1" - log "% echo 0 > /sys/kernel/livepatch/$mod/enabled" - echo 0 > /sys/kernel/livepatch/"$mod"/enabled + log "% echo 0 > $SYSFS_KLP_DIR/$mod/enabled" + echo 0 > "$SYSFS_KLP_DIR/$mod/enabled" # Wait until the transition finishes and the livepatch gets # removed from sysfs... - loop_until '[[ ! -e "/sys/kernel/livepatch/$mod" ]]' || + loop_until '[[ ! -e "$SYSFS_KLP_DIR/$mod" ]]' || die "failed to disable livepatch $mod" } @@ -322,7 +322,7 @@ function check_sysfs_rights() { local rel_path="$1"; shift local expected_rights="$1"; shift - local path="$KLP_SYSFS_DIR/$mod/$rel_path" + local path="$SYSFS_KLP_DIR/$mod/$rel_path" local rights=$(/bin/stat --format '%A' "$path") if test "$rights" != "$expected_rights" ; then die "Unexpected access rights of $path: $expected_rights vs. $rights" @@ -338,7 +338,7 @@ function check_sysfs_value() { local rel_path="$1"; shift local expected_value="$1"; shift - local path="$KLP_SYSFS_DIR/$mod/$rel_path" + local path="$SYSFS_KLP_DIR/$mod/$rel_path" local value=`cat $path` if test "$value" != "$expected_value" ; then die "Unexpected value in $path: $expected_value vs. $value" diff --git a/tools/testing/selftests/livepatch/test-callbacks.sh b/tools/testing/selftests/livepatch/test-callbacks.sh index 32b150e25b10..37bbc3fb2780 100755 --- a/tools/testing/selftests/livepatch/test-callbacks.sh +++ b/tools/testing/selftests/livepatch/test-callbacks.sh @@ -46,7 +46,7 @@ livepatch: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux $MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state livepatch: '$MOD_LIVEPATCH': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state @@ -94,7 +94,7 @@ livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init $MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init $MOD_TARGET: ${MOD_TARGET}_init -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state @@ -146,7 +146,7 @@ $MOD_TARGET: ${MOD_TARGET}_exit $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux livepatch: '$MOD_LIVEPATCH': starting unpatching transition @@ -195,7 +195,7 @@ $MOD_TARGET: ${MOD_TARGET}_exit $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux livepatch: '$MOD_LIVEPATCH': starting unpatching transition @@ -227,7 +227,7 @@ livepatch: '$MOD_LIVEPATCH': starting patching transition livepatch: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux livepatch: '$MOD_LIVEPATCH': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux livepatch: '$MOD_LIVEPATCH': starting unpatching transition @@ -310,7 +310,7 @@ $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full fo livepatch: pre-patch callback failed for object '$MOD_TARGET' livepatch: patch '$MOD_LIVEPATCH' failed for module '$MOD_TARGET', refusing to load module '$MOD_TARGET' insmod: ERROR: could not insert module test_modules/$MOD_TARGET.ko: No such device -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux livepatch: '$MOD_LIVEPATCH': starting unpatching transition @@ -364,7 +364,7 @@ $MOD_TARGET: ${MOD_TARGET}_exit $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state @@ -412,7 +412,7 @@ load_lp_nowait $MOD_LIVEPATCH # Wait until the livepatch reports in-transition state, i.e. that it's # stalled on $MOD_TARGET_BUSY::busymod_work_func() -loop_until 'grep -q '^1$' /sys/kernel/livepatch/$MOD_LIVEPATCH/transition' || +loop_until 'grep -q '^1$' $SYSFS_KLP_DIR/$MOD_LIVEPATCH/transition' || die "failed to stall transition" load_mod $MOD_TARGET @@ -438,7 +438,7 @@ $MOD_TARGET: ${MOD_TARGET}_init $MOD_TARGET: ${MOD_TARGET}_exit livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': reversing transition from patching to unpatching livepatch: '$MOD_LIVEPATCH': starting unpatching transition livepatch: '$MOD_LIVEPATCH': completing unpatching transition @@ -483,14 +483,14 @@ livepatch: '$MOD_LIVEPATCH2': starting patching transition livepatch: '$MOD_LIVEPATCH2': completing patching transition $MOD_LIVEPATCH2: post_patch_callback: vmlinux livepatch: '$MOD_LIVEPATCH2': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH2/enabled livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux livepatch: '$MOD_LIVEPATCH2': starting unpatching transition livepatch: '$MOD_LIVEPATCH2': completing unpatching transition $MOD_LIVEPATCH2: post_unpatch_callback: vmlinux livepatch: '$MOD_LIVEPATCH2': unpatching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux livepatch: '$MOD_LIVEPATCH': starting unpatching transition @@ -539,7 +539,7 @@ livepatch: '$MOD_LIVEPATCH2': starting patching transition livepatch: '$MOD_LIVEPATCH2': completing patching transition $MOD_LIVEPATCH2: post_patch_callback: vmlinux livepatch: '$MOD_LIVEPATCH2': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH2/enabled livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux livepatch: '$MOD_LIVEPATCH2': starting unpatching transition diff --git a/tools/testing/selftests/livepatch/test-ftrace.sh b/tools/testing/selftests/livepatch/test-ftrace.sh index 730218bce99c..fe14f248913a 100755 --- a/tools/testing/selftests/livepatch/test-ftrace.sh +++ b/tools/testing/selftests/livepatch/test-ftrace.sh @@ -53,7 +53,7 @@ livepatch: '$MOD_LIVEPATCH': starting patching transition livepatch: '$MOD_LIVEPATCH': completing patching transition livepatch: '$MOD_LIVEPATCH': patching complete livepatch: sysctl: setting key \"kernel.ftrace_enabled\": Device or resource busy -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition livepatch: '$MOD_LIVEPATCH': starting unpatching transition livepatch: '$MOD_LIVEPATCH': completing unpatching transition diff --git a/tools/testing/selftests/livepatch/test-livepatch.sh b/tools/testing/selftests/livepatch/test-livepatch.sh index bd13257bfdfe..6673023d2b66 100755 --- a/tools/testing/selftests/livepatch/test-livepatch.sh +++ b/tools/testing/selftests/livepatch/test-livepatch.sh @@ -39,7 +39,7 @@ livepatch: '$MOD_LIVEPATCH1': initializing patching transition livepatch: '$MOD_LIVEPATCH1': starting patching transition livepatch: '$MOD_LIVEPATCH1': completing patching transition livepatch: '$MOD_LIVEPATCH1': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH1/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH1/enabled livepatch: '$MOD_LIVEPATCH1': initializing unpatching transition livepatch: '$MOD_LIVEPATCH1': starting unpatching transition livepatch: '$MOD_LIVEPATCH1': completing unpatching transition @@ -92,14 +92,14 @@ livepatch: '$MOD_REPLACE': completing patching transition livepatch: '$MOD_REPLACE': patching complete $MOD_LIVEPATCH1: this has been live patched $MOD_REPLACE: this has been live patched -% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_REPLACE/enabled livepatch: '$MOD_REPLACE': initializing unpatching transition livepatch: '$MOD_REPLACE': starting unpatching transition livepatch: '$MOD_REPLACE': completing unpatching transition livepatch: '$MOD_REPLACE': unpatching complete % rmmod $MOD_REPLACE $MOD_LIVEPATCH1: this has been live patched -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH1/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH1/enabled livepatch: '$MOD_LIVEPATCH1': initializing unpatching transition livepatch: '$MOD_LIVEPATCH1': starting unpatching transition livepatch: '$MOD_LIVEPATCH1': completing unpatching transition @@ -128,7 +128,7 @@ for mod in $MOD_LIVEPATCH2 $MOD_LIVEPATCH3; do load_lp "$mod" done -mods=(/sys/kernel/livepatch/*) +mods=($SYSFS_KLP_DIR/*) nmods=${#mods[@]} if [ "$nmods" -ne 3 ]; then die "Expecting three modules listed, found $nmods" @@ -139,7 +139,7 @@ load_lp $MOD_REPLACE replace=1 grep 'live patched' /proc/cmdline > /dev/kmsg grep 'live patched' /proc/meminfo > /dev/kmsg -loop_until 'mods=(/sys/kernel/livepatch/*); nmods=${#mods[@]}; [[ "$nmods" -eq 1 ]]' || +loop_until 'mods=($SYSFS_KLP_DIR/*); nmods=${#mods[@]}; [[ "$nmods" -eq 1 ]]' || die "Expecting only one moduled listed, found $nmods" # These modules were disabled by the atomic replace @@ -188,7 +188,7 @@ $MOD_REPLACE: this has been live patched % rmmod $MOD_LIVEPATCH2 % rmmod $MOD_LIVEPATCH1 $MOD_REPLACE: this has been live patched -% echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_REPLACE/enabled livepatch: '$MOD_REPLACE': initializing unpatching transition livepatch: '$MOD_REPLACE': starting unpatching transition livepatch: '$MOD_REPLACE': completing unpatching transition diff --git a/tools/testing/selftests/livepatch/test-state.sh b/tools/testing/selftests/livepatch/test-state.sh index 10a52ac06185..04b66380f8a0 100755 --- a/tools/testing/selftests/livepatch/test-state.sh +++ b/tools/testing/selftests/livepatch/test-state.sh @@ -29,7 +29,7 @@ livepatch: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux $MOD_LIVEPATCH: fix_console_loglevel: fixing console_loglevel livepatch: '$MOD_LIVEPATCH': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH: restore_console_loglevel: restoring console_loglevel @@ -72,7 +72,7 @@ $MOD_LIVEPATCH2: post_patch_callback: vmlinux $MOD_LIVEPATCH2: fix_console_loglevel: taking over the console_loglevel change livepatch: '$MOD_LIVEPATCH2': patching complete % rmmod $MOD_LIVEPATCH -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH2/enabled livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel @@ -127,7 +127,7 @@ livepatch: '$MOD_LIVEPATCH2': completing patching transition $MOD_LIVEPATCH2: post_patch_callback: vmlinux $MOD_LIVEPATCH2: fix_console_loglevel: taking over the console_loglevel change livepatch: '$MOD_LIVEPATCH2': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH2/enabled livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel @@ -162,7 +162,7 @@ livepatch: '$MOD_LIVEPATCH2': patching complete % insmod test_modules/$MOD_LIVEPATCH.ko livepatch: Livepatch patch ($MOD_LIVEPATCH) is not compatible with the already installed livepatches. insmod: ERROR: could not insert module test_modules/$MOD_LIVEPATCH.ko: Invalid parameters -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH2/enabled livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel diff --git a/tools/testing/selftests/livepatch/test-syscall.sh b/tools/testing/selftests/livepatch/test-syscall.sh index 289eb7d4c4b3..9347464a89a0 100755 --- a/tools/testing/selftests/livepatch/test-syscall.sh +++ b/tools/testing/selftests/livepatch/test-syscall.sh @@ -46,7 +46,7 @@ livepatch: '$MOD_SYSCALL': starting patching transition livepatch: '$MOD_SYSCALL': completing patching transition livepatch: '$MOD_SYSCALL': patching complete $MOD_SYSCALL: Remaining not livepatched processes: 0 -% echo 0 > /sys/kernel/livepatch/$MOD_SYSCALL/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_SYSCALL/enabled livepatch: '$MOD_SYSCALL': initializing unpatching transition livepatch: '$MOD_SYSCALL': starting unpatching transition livepatch: '$MOD_SYSCALL': completing unpatching transition diff --git a/tools/testing/selftests/livepatch/test-sysfs.sh b/tools/testing/selftests/livepatch/test-sysfs.sh index 05a14f5a7bfb..2c91428d2997 100755 --- a/tools/testing/selftests/livepatch/test-sysfs.sh +++ b/tools/testing/selftests/livepatch/test-sysfs.sh @@ -34,7 +34,7 @@ livepatch: '$MOD_LIVEPATCH': initializing patching transition livepatch: '$MOD_LIVEPATCH': starting patching transition livepatch: '$MOD_LIVEPATCH': completing patching transition livepatch: '$MOD_LIVEPATCH': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition livepatch: '$MOD_LIVEPATCH': starting unpatching transition livepatch: '$MOD_LIVEPATCH': completing unpatching transition @@ -75,7 +75,7 @@ test_klp_callbacks_mod: test_klp_callbacks_mod_exit test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away livepatch: reverting patch 'test_klp_callbacks_demo' on unloading module 'test_klp_callbacks_mod' test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_GOING] Going away -% echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled +% echo 0 > $SYSFS_KLP_DIR/test_klp_callbacks_demo/enabled livepatch: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux livepatch: 'test_klp_callbacks_demo': starting unpatching transition @@ -101,7 +101,7 @@ livepatch: '$MOD_LIVEPATCH': initializing patching transition livepatch: '$MOD_LIVEPATCH': starting patching transition livepatch: '$MOD_LIVEPATCH': completing patching transition livepatch: '$MOD_LIVEPATCH': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition livepatch: '$MOD_LIVEPATCH': starting unpatching transition livepatch: '$MOD_LIVEPATCH': completing unpatching transition @@ -124,7 +124,7 @@ livepatch: '$MOD_LIVEPATCH': initializing patching transition livepatch: '$MOD_LIVEPATCH': starting patching transition livepatch: '$MOD_LIVEPATCH': completing patching transition livepatch: '$MOD_LIVEPATCH': patching complete -% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +% echo 0 > $SYSFS_KLP_DIR/$MOD_LIVEPATCH/enabled livepatch: '$MOD_LIVEPATCH': initializing unpatching transition livepatch: '$MOD_LIVEPATCH': starting unpatching transition livepatch: '$MOD_LIVEPATCH': completing unpatching transition -- cgit v1.2.3 From 59766286b6e54f8ad334dcef7d2e743b7550df0e Mon Sep 17 00:00:00 2001 From: Michael Vetter Date: Thu, 17 Oct 2024 22:01:31 +0200 Subject: selftests: livepatch: save and restore kprobe state Save the state of /sys/kernel/debug/kprobes/enabled during setup_config() and restore it during cleanup(). This is in preparation for a future commit that will add a test that should confirm that we cannot livepatch a kprobed function if that kprobe has a post handler. Signed-off-by: Michael Vetter Reviewed-by: Miroslav Benes Reviewed-by: Joe Lawrence Tested-by: Marcos Paulo de Souza Reviewed-by: Marcos Paulo de Souza Reviewed-by: Petr Mladek Tested-by: Petr Mladek Link: https://lore.kernel.org/r/20241017200132.21946-3-mvetter@suse.com [pmladek@suse.com: Added few more substitutions in test-syscall.sh] Signed-off-by: Petr Mladek --- tools/testing/selftests/livepatch/functions.sh | 15 +++++++++++---- tools/testing/selftests/livepatch/test-syscall.sh | 4 ++-- 2 files changed, 13 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index 7bdfe668127b..e5d06fb40233 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -6,7 +6,10 @@ MAX_RETRIES=600 RETRY_INTERVAL=".1" # seconds -SYSFS_KLP_DIR="/sys/kernel/livepatch" +SYSFS_KERNEL_DIR="/sys/kernel" +SYSFS_KLP_DIR="$SYSFS_KERNEL_DIR/livepatch" +SYSFS_DEBUG_DIR="$SYSFS_KERNEL_DIR/debug" +SYSFS_KPROBES_DIR="$SYSFS_DEBUG_DIR/kprobes" # Kselftest framework requirement - SKIP code is 4 ksft_skip=4 @@ -55,22 +58,26 @@ function die() { } function push_config() { - DYNAMIC_DEBUG=$(grep '^kernel/livepatch' /sys/kernel/debug/dynamic_debug/control | \ + DYNAMIC_DEBUG=$(grep '^kernel/livepatch' "$SYSFS_DEBUG_DIR/dynamic_debug/control" | \ awk -F'[: ]' '{print "file " $1 " line " $2 " " $4}') FTRACE_ENABLED=$(sysctl --values kernel.ftrace_enabled) + KPROBE_ENABLED=$(cat "$SYSFS_KPROBES_DIR/enabled") } function pop_config() { if [[ -n "$DYNAMIC_DEBUG" ]]; then - echo -n "$DYNAMIC_DEBUG" > /sys/kernel/debug/dynamic_debug/control + echo -n "$DYNAMIC_DEBUG" > "$SYSFS_DEBUG_DIR/dynamic_debug/control" fi if [[ -n "$FTRACE_ENABLED" ]]; then sysctl kernel.ftrace_enabled="$FTRACE_ENABLED" &> /dev/null fi + if [[ -n "$KPROBE_ENABLED" ]]; then + echo "$KPROBE_ENABLED" > "$SYSFS_KPROBES_DIR/enabled" + fi } function set_dynamic_debug() { - cat <<-EOF > /sys/kernel/debug/dynamic_debug/control + cat <<-EOF > "$SYSFS_DEBUG_DIR/dynamic_debug/control" file kernel/livepatch/* +p func klp_try_switch_task -p EOF diff --git a/tools/testing/selftests/livepatch/test-syscall.sh b/tools/testing/selftests/livepatch/test-syscall.sh index 9347464a89a0..5f9344277b62 100755 --- a/tools/testing/selftests/livepatch/test-syscall.sh +++ b/tools/testing/selftests/livepatch/test-syscall.sh @@ -27,9 +27,9 @@ pid_list=$(echo ${pids[@]} | tr ' ' ',') load_lp $MOD_SYSCALL klp_pids=$pid_list # wait for all tasks to transition to patched state -loop_until 'grep -q '^0$' /sys/kernel/test_klp_syscall/npids' +loop_until 'grep -q '^0$' $SYSFS_KERNEL_DIR/$MOD_SYSCALL/npids' -pending_pids=$(cat /sys/kernel/test_klp_syscall/npids) +pending_pids=$(cat $SYSFS_KERNEL_DIR/$MOD_SYSCALL/npids) log "$MOD_SYSCALL: Remaining not livepatched processes: $pending_pids" for pid in ${pids[@]}; do -- cgit v1.2.3 From 62597edf6340191511bdf9a7f64fa315ddc58805 Mon Sep 17 00:00:00 2001 From: Michael Vetter Date: Thu, 17 Oct 2024 22:01:32 +0200 Subject: selftests: livepatch: test livepatching a kprobed function The test proves that a function that is being kprobed and uses a post_handler cannot be livepatched. Only one ftrace_ops with FTRACE_OPS_FL_IPMODIFY set may be registered to any given function at a time. Note that the conflicting kprobe could not be created using the tracefs interface, see Documentation/trace/kprobetrace.rst. This interface uses only the pre_handler(), see alloc_trace_kprobe(). But FTRACE_OPS_FL_IPMODIFY is used only when the kprobe is using a post_handler, see arm_kprobe_ftrace(). Signed-off-by: Michael Vetter Reviewed-by: Miroslav Benes Reviewed-by: Joe Lawrence Tested-by: Marcos Paulo de Souza Reviewed-by: Marcos Paulo de Souza Reviewed-by: Petr Mladek Tested-by: Petr Mladek Link: https://lore.kernel.org/r/20241017200132.21946-4-mvetter@suse.com Signed-off-by: Petr Mladek --- tools/testing/selftests/livepatch/Makefile | 3 +- tools/testing/selftests/livepatch/test-kprobe.sh | 62 ++++++++++++++++++++++ .../selftests/livepatch/test_modules/Makefile | 3 +- .../livepatch/test_modules/test_klp_kprobe.c | 38 +++++++++++++ 4 files changed, 104 insertions(+), 2 deletions(-) create mode 100755 tools/testing/selftests/livepatch/test-kprobe.sh create mode 100644 tools/testing/selftests/livepatch/test_modules/test_klp_kprobe.c (limited to 'tools') diff --git a/tools/testing/selftests/livepatch/Makefile b/tools/testing/selftests/livepatch/Makefile index 35418a4790be..a080eb54a215 100644 --- a/tools/testing/selftests/livepatch/Makefile +++ b/tools/testing/selftests/livepatch/Makefile @@ -10,7 +10,8 @@ TEST_PROGS := \ test-state.sh \ test-ftrace.sh \ test-sysfs.sh \ - test-syscall.sh + test-syscall.sh \ + test-kprobe.sh TEST_FILES := settings diff --git a/tools/testing/selftests/livepatch/test-kprobe.sh b/tools/testing/selftests/livepatch/test-kprobe.sh new file mode 100755 index 000000000000..115065156016 --- /dev/null +++ b/tools/testing/selftests/livepatch/test-kprobe.sh @@ -0,0 +1,62 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2024 SUSE +# Author: Michael Vetter + +. $(dirname $0)/functions.sh + +MOD_LIVEPATCH=test_klp_livepatch +MOD_KPROBE=test_klp_kprobe + +setup_config + +# Kprobe a function and verify that we can't livepatch that same function +# when it uses a post_handler since only one IPMODIFY maybe be registered +# to any given function at a time. + +start_test "livepatch interaction with kprobed function with post_handler" + +echo 1 > "$SYSFS_KPROBES_DIR/enabled" + +load_mod $MOD_KPROBE has_post_handler=true +load_failing_mod $MOD_LIVEPATCH +unload_mod $MOD_KPROBE + +check_result "% insmod test_modules/test_klp_kprobe.ko has_post_handler=true +% insmod test_modules/$MOD_LIVEPATCH.ko +livepatch: enabling patch '$MOD_LIVEPATCH' +livepatch: '$MOD_LIVEPATCH': initializing patching transition +livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) +livepatch: failed to patch object 'vmlinux' +livepatch: failed to enable patch '$MOD_LIVEPATCH' +livepatch: '$MOD_LIVEPATCH': canceling patching transition, going to unpatch +livepatch: '$MOD_LIVEPATCH': completing unpatching transition +livepatch: '$MOD_LIVEPATCH': unpatching complete +insmod: ERROR: could not insert module test_modules/$MOD_LIVEPATCH.ko: Device or resource busy +% rmmod test_klp_kprobe" + +start_test "livepatch interaction with kprobed function without post_handler" + +load_mod $MOD_KPROBE has_post_handler=false +load_lp $MOD_LIVEPATCH + +unload_mod $MOD_KPROBE +disable_lp $MOD_LIVEPATCH +unload_lp $MOD_LIVEPATCH + +check_result "% insmod test_modules/test_klp_kprobe.ko has_post_handler=false +% insmod test_modules/$MOD_LIVEPATCH.ko +livepatch: enabling patch '$MOD_LIVEPATCH' +livepatch: '$MOD_LIVEPATCH': initializing patching transition +livepatch: '$MOD_LIVEPATCH': starting patching transition +livepatch: '$MOD_LIVEPATCH': completing patching transition +livepatch: '$MOD_LIVEPATCH': patching complete +% rmmod test_klp_kprobe +% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled +livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +livepatch: '$MOD_LIVEPATCH': starting unpatching transition +livepatch: '$MOD_LIVEPATCH': completing unpatching transition +livepatch: '$MOD_LIVEPATCH': unpatching complete +% rmmod $MOD_LIVEPATCH" + +exit 0 diff --git a/tools/testing/selftests/livepatch/test_modules/Makefile b/tools/testing/selftests/livepatch/test_modules/Makefile index e6e638c4bcba..939230e571f5 100644 --- a/tools/testing/selftests/livepatch/test_modules/Makefile +++ b/tools/testing/selftests/livepatch/test_modules/Makefile @@ -6,11 +6,12 @@ obj-m += test_klp_atomic_replace.o \ test_klp_callbacks_demo.o \ test_klp_callbacks_demo2.o \ test_klp_callbacks_mod.o \ + test_klp_kprobe.o \ test_klp_livepatch.o \ + test_klp_shadow_vars.o \ test_klp_state.o \ test_klp_state2.o \ test_klp_state3.o \ - test_klp_shadow_vars.o \ test_klp_syscall.o # Ensure that KDIR exists, otherwise skip the compilation diff --git a/tools/testing/selftests/livepatch/test_modules/test_klp_kprobe.c b/tools/testing/selftests/livepatch/test_modules/test_klp_kprobe.c new file mode 100644 index 000000000000..67a8d29012f6 --- /dev/null +++ b/tools/testing/selftests/livepatch/test_modules/test_klp_kprobe.c @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2024 Marcos Paulo de Souza +// Copyright (C) 2024 Michael Vetter + +#include +#include +#include + +static bool has_post_handler = true; +module_param(has_post_handler, bool, 0444); + +static void __kprobes post_handler(struct kprobe *p, struct pt_regs *regs, + unsigned long flags) +{ +} + +static struct kprobe kp = { + .symbol_name = "cmdline_proc_show", +}; + +static int __init kprobe_init(void) +{ + if (has_post_handler) + kp.post_handler = post_handler; + + return register_kprobe(&kp); +} + +static void __exit kprobe_exit(void) +{ + unregister_kprobe(&kp); +} + +module_init(kprobe_init) +module_exit(kprobe_exit) +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Michael Vetter "); +MODULE_DESCRIPTION("Livepatch test: kprobe function"); -- cgit v1.2.3 From bb6e7cb11d97ce1957894d30d13bfad3e8bfefe9 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:51 -0700 Subject: perf tools: Add fallback for exclude_guest Commit 7b100989b4f6bce70 ("perf evlist: Remove __evlist__add_default") changed to parse "cycles:P" event instead of creating a new cycles event for perf record. But it also changed the way how modifiers are handled so it doesn't set the exclude_guest bit by default. It seems Apple M1 PMU requires exclude_guest set and returns EOPNOTSUPP if not. Let's add a fallback so that it can work with default events. Also update perf stat hybrid tests to handle possible u or H modifiers. Reviewed-by: Ian Rogers Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-2-namhyung@kernel.org Fixes: 7b100989b4f6bce70 ("perf evlist: Remove __evlist__add_default") Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 18 +++++++++++++++--- tools/perf/tests/shell/stat.sh | 2 +- tools/perf/util/evsel.c | 21 +++++++++++++++++++++ 3 files changed, 37 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 7639ecda6c05..c12158d99353 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -640,8 +640,7 @@ static enum counter_recovery stat_handle_error(struct evsel *counter) * (behavior changed with commit b0a873e). */ if (errno == EINVAL || errno == ENOSYS || - errno == ENOENT || errno == EOPNOTSUPP || - errno == ENXIO) { + errno == ENOENT || errno == ENXIO) { if (verbose > 0) ui__warning("%s event is not supported by the kernel.\n", evsel__name(counter)); @@ -659,7 +658,7 @@ static enum counter_recovery stat_handle_error(struct evsel *counter) if (verbose > 0) ui__warning("%s\n", msg); return COUNTER_RETRY; - } else if (target__has_per_thread(&target) && + } else if (target__has_per_thread(&target) && errno != EOPNOTSUPP && evsel_list->core.threads && evsel_list->core.threads->err_thread != -1) { /* @@ -680,6 +679,19 @@ static enum counter_recovery stat_handle_error(struct evsel *counter) return COUNTER_SKIP; } + if (errno == EOPNOTSUPP) { + if (verbose > 0) { + ui__warning("%s event is not supported by the kernel.\n", + evsel__name(counter)); + } + counter->supported = false; + counter->errored = true; + + if ((evsel__leader(counter) != counter) || + !(counter->core.leader->nr_members > 1)) + return COUNTER_SKIP; + } + evsel__open_strerror(counter, &target, errno, msg, sizeof(msg)); ui__error("%s\n", msg); diff --git a/tools/perf/tests/shell/stat.sh b/tools/perf/tests/shell/stat.sh index f25ef468b8fc..7a8adf81e4b3 100755 --- a/tools/perf/tests/shell/stat.sh +++ b/tools/perf/tests/shell/stat.sh @@ -185,7 +185,7 @@ test_hybrid() { fi # Run default Perf stat - cycles_events=$(perf stat -- true 2>&1 | grep -E "/cycles/| cycles " | wc -l) + cycles_events=$(perf stat -- true 2>&1 | grep -E "/cycles/[uH]*| cycles[:uH]* " -c) if [ "$pmus" -ne "$cycles_events" ] then diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 14663ad14c53..8fb31f0b48b8 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -3156,6 +3156,27 @@ bool evsel__fallback(struct evsel *evsel, struct target *target, int err, evsel->core.attr.exclude_kernel = 1; evsel->core.attr.exclude_hv = 1; + return true; + } else if (err == EOPNOTSUPP && !evsel->core.attr.exclude_guest && + !evsel->exclude_GH) { + const char *name = evsel__name(evsel); + char *new_name; + const char *sep = ":"; + + /* Is there already the separator in the name. */ + if (strchr(name, '/') || + (strchr(name, ':') && !evsel->is_libpfm_event)) + sep = ""; + + if (asprintf(&new_name, "%s%sH", name, sep) < 0) + return false; + + free(evsel->name); + evsel->name = new_name; + /* Apple M1 requires exclude_guest */ + scnprintf(msg, msgsize, "trying to fall back to excluding guest samples"); + evsel->core.attr.exclude_guest = 1; + return true; } -- cgit v1.2.3 From 35c8d21371e9b342dbd91a8e9b1abaabaec95d41 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:52 -0700 Subject: perf tools: Don't set attr.exclude_guest by default The exclude_guest in the event attribute is to limit profiling in the host environment. But I'm not sure why we want to set it by default cause we don't care about it in most cases and I feel like it just makes new PMU implementation complicated. Of course it's useful for perf kvm command so I added the exclude_GH_default variable to preserve the old behavior for perf kvm and other commands like perf record and stat won't set the exclude bit. This is helpful for AMD IBS case since having exclude_guest bit will clear new feature bit due to the missing feature check logic. $ sysctl kernel.perf_event_paranoid kernel.perf_event_paranoid = 0 $ perf record -W -e ibs_op// -vv true 2>&1 | grep switching switching off PERF_FORMAT_LOST support switching off weight struct support switching off bpf_event switching off ksymbol switching off cloexec flag switching off mmap2 switching off exclude_guest, exclude_host Intestingly, I found it sets the exclude_bit if "u" modifier is used. I don't know why but it's neither intuitive nor consistent. Let's remove the bit there too. Reviewed-by: Ian Rogers Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-3-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/builtin-kvm.c | 1 + tools/perf/tests/parse-events.c | 18 +++++++++--------- tools/perf/tests/shell/attr/test-record-dummy-C0 | 2 +- tools/perf/util/parse-events.c | 2 +- tools/perf/util/util.c | 10 ++++++++-- tools/perf/util/util.h | 3 +++ 6 files changed, 23 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 55ea17c5ff02..099ce3ebf67c 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -2147,6 +2147,7 @@ int cmd_kvm(int argc, const char **argv) "buildid-list", "stat", NULL }; const char *kvm_usage[] = { NULL, NULL }; + exclude_GH_default = true; perf_host = 0; perf_guest = 1; diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index 78e999f03d2d..727683f249f6 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -932,7 +932,7 @@ static int test__group2(struct evlist *evlist) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); @@ -947,7 +947,7 @@ static int test__group2(struct evlist *evlist) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); if (evsel__has_leader(evsel, leader)) @@ -1072,7 +1072,7 @@ static int test__group3(struct evlist *evlist __maybe_unused) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); @@ -1222,7 +1222,7 @@ static int test__group5(struct evlist *evlist __maybe_unused) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); TEST_ASSERT_VAL("wrong leader", evsel__is_group_leader(evsel)); @@ -1437,7 +1437,7 @@ static int test__leader_sample1(struct evlist *evlist) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); TEST_ASSERT_VAL("wrong group name", !evsel->group_name); @@ -1453,7 +1453,7 @@ static int test__leader_sample1(struct evlist *evlist) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); TEST_ASSERT_VAL("wrong leader", evsel__has_leader(evsel, leader)); @@ -1468,7 +1468,7 @@ static int test__leader_sample1(struct evlist *evlist) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", !evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); TEST_ASSERT_VAL("wrong group name", !evsel->group_name); @@ -1497,7 +1497,7 @@ static int test__leader_sample2(struct evlist *evlist __maybe_unused) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); TEST_ASSERT_VAL("wrong group name", !evsel->group_name); @@ -1513,7 +1513,7 @@ static int test__leader_sample2(struct evlist *evlist __maybe_unused) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", !evsel->core.attr.precise_ip); TEST_ASSERT_VAL("wrong group name", !evsel->group_name); diff --git a/tools/perf/tests/shell/attr/test-record-dummy-C0 b/tools/perf/tests/shell/attr/test-record-dummy-C0 index 3050298bd614..91499405fff4 100644 --- a/tools/perf/tests/shell/attr/test-record-dummy-C0 +++ b/tools/perf/tests/shell/attr/test-record-dummy-C0 @@ -37,7 +37,7 @@ precise_ip=0 mmap_data=0 sample_id_all=1 exclude_host=0 -exclude_guest=1 +exclude_guest=0 exclude_callchain_kernel=0 exclude_callchain_user=0 mmap2=1 diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 4507ae68198b..687125570f56 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1740,7 +1740,7 @@ static int parse_events__modifier_list(struct parse_events_state *parse_state, if (mod.user) { if (!exclude) exclude = eu = ek = eh = 1; - if (!exclude_GH && !perf_guest) + if (!exclude_GH && !perf_guest && exclude_GH_default) eG = 1; eu = 0; } diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 9d55a13787ce..280c86d61d8a 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -78,17 +78,23 @@ bool sysctl__nmi_watchdog_enabled(void) bool test_attr__enabled; +bool exclude_GH_default; + bool perf_host = true; bool perf_guest = false; void event_attr_init(struct perf_event_attr *attr) { + /* to capture ABI version */ + attr->size = sizeof(*attr); + + if (!exclude_GH_default) + return; + if (!perf_host) attr->exclude_host = 1; if (!perf_guest) attr->exclude_guest = 1; - /* to capture ABI version */ - attr->size = sizeof(*attr); } int mkdir_p(char *path, mode_t mode) diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 14f2c70906be..2359362885ea 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -21,6 +21,9 @@ extern const char perf_more_info_string[]; extern const char *input_name; +/* This will control if perf_{host,guest} will set attr.exclude_{host,guest}. */ +extern bool exclude_GH_default; + extern bool perf_host; extern bool perf_guest; -- cgit v1.2.3 From d9e0970f77b92b0e2afff5e4a9e379bc9885df56 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:53 -0700 Subject: perf tools: Simplify evsel__add_modifier() Since it doesn't set the exclude_guest, no need to special handle the bit and simply show only if one of host or guest bit is set. Now the default event name might not have :H prefix anymore so change the dlfilter test not to compare the ":" at the end. Reviewed-by: Ian Rogers Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-4-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/dlfilters/dlfilter-test-api-v0.c | 2 +- tools/perf/dlfilters/dlfilter-test-api-v2.c | 2 +- tools/perf/util/evsel.c | 5 +---- 3 files changed, 3 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/dlfilters/dlfilter-test-api-v0.c b/tools/perf/dlfilters/dlfilter-test-api-v0.c index 4083b1abeaab..4ca2d7b2ea6c 100644 --- a/tools/perf/dlfilters/dlfilter-test-api-v0.c +++ b/tools/perf/dlfilters/dlfilter-test-api-v0.c @@ -220,7 +220,7 @@ static int check_sample(struct filter_data *d, const struct perf_dlfilter_sample CHECK_SAMPLE(raw_callchain_nr); CHECK(!sample->raw_callchain); -#define EVENT_NAME "branches:" +#define EVENT_NAME "branches" CHECK(!strncmp(sample->event, EVENT_NAME, strlen(EVENT_NAME))); return 0; diff --git a/tools/perf/dlfilters/dlfilter-test-api-v2.c b/tools/perf/dlfilters/dlfilter-test-api-v2.c index 32ff619e881c..00d73a16c4fd 100644 --- a/tools/perf/dlfilters/dlfilter-test-api-v2.c +++ b/tools/perf/dlfilters/dlfilter-test-api-v2.c @@ -235,7 +235,7 @@ static int check_sample(struct filter_data *d, const struct perf_dlfilter_sample CHECK_SAMPLE(raw_callchain_nr); CHECK(!sample->raw_callchain); -#define EVENT_NAME "branches:" +#define EVENT_NAME "branches" CHECK(!strncmp(sample->event, EVENT_NAME, strlen(EVENT_NAME))); return 0; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 8fb31f0b48b8..7f98f9d3394a 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -638,7 +638,6 @@ static int evsel__add_modifiers(struct evsel *evsel, char *bf, size_t size) { int colon = 0, r = 0; struct perf_event_attr *attr = &evsel->core.attr; - bool exclude_guest_default = false; #define MOD_PRINT(context, mod) do { \ if (!attr->exclude_##context) { \ @@ -650,17 +649,15 @@ static int evsel__add_modifiers(struct evsel *evsel, char *bf, size_t size) MOD_PRINT(kernel, 'k'); MOD_PRINT(user, 'u'); MOD_PRINT(hv, 'h'); - exclude_guest_default = true; } if (attr->precise_ip) { if (!colon) colon = ++r; r += scnprintf(bf + r, size - r, "%.*s", attr->precise_ip, "ppp"); - exclude_guest_default = true; } - if (attr->exclude_host || attr->exclude_guest == exclude_guest_default) { + if (attr->exclude_host || attr->exclude_guest) { MOD_PRINT(host, 'H'); MOD_PRINT(guest, 'G'); } -- cgit v1.2.3 From 88bc63d00eb6defb661b9fd79957660b4dfa4b50 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:54 -0700 Subject: perf tools: Do not set exclude_guest for precise_ip It seems perf sets the exclude_guest bit because of Intel PEBS implementation which uses a virtual address. IIUC now kernel disables PEBS when it goes to the guest mode regardless of this bit so we don't need to set it explicitly. At least for the other archs/vendors. I found the commit 1342798cc13e set the exclude_guest for precise_ip in the tool and the commit 20b279ddb38c added kernel side enforcement which was reverted by commit a706d965dcfd later. Actually it doesn't set the exclude_guest for the default event (cycles:P) already. $ grep -m1 vendor /proc/cpuinfo vendor_id : GenuineIntel $ perf record -e cycles:P true [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.002 MB perf.data (9 samples) ] $ perf evlist -v | tr ',' '\n' | grep -e exclude -e precise precise_ip: 3 But having lower 'p' modifier set the bit for some reason. $ perf record -e cycles:pp true [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.002 MB perf.data (9 samples) ] $ perf evlist -v | tr ',' '\n' | grep -e exclude -e precise precise_ip: 2 exclude_guest: 1 Actually AMD IBS suffers from this because it doesn't support excludes and having this bit effectively disables new features in the current implementation (due to the missing feature check). $ grep -m1 vendor /proc/cpuinfo vendor_id : AuthenticAMD $ perf record -W -e cycles:p -vv true 2>&1 | grep switching switching off PERF_FORMAT_LOST support switching off weight struct support switching off bpf_event switching off ksymbol switching off cloexec flag switching off mmap2 switching off exclude_guest, exclude_host By not setting exclude_guest, we can fix this inconsistency and the troubles. Reviewed-by: Ian Rogers Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-5-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/tests/parse-events.c | 12 ++++-------- tools/perf/util/parse-events.c | 4 ---- 2 files changed, 4 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c index 727683f249f6..82a19674a38f 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -898,8 +898,7 @@ static int test__group1(struct evlist *evlist) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - /* use of precise requires exclude_guest */ - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip == 2); TEST_ASSERT_VAL("wrong leader", evsel__has_leader(evsel, leader)); @@ -1016,9 +1015,8 @@ static int test__group3(struct evlist *evlist __maybe_unused) TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - /* use of precise requires exclude_guest */ TEST_ASSERT_VAL("wrong exclude guest", - evsel->core.attr.exclude_guest); + !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", @@ -1103,8 +1101,7 @@ static int test__group4(struct evlist *evlist __maybe_unused) TEST_ASSERT_VAL("wrong exclude_user", !evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - /* use of precise requires exclude_guest */ - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip == 1); TEST_ASSERT_VAL("wrong group name", !evsel->group_name); @@ -1122,8 +1119,7 @@ static int test__group4(struct evlist *evlist __maybe_unused) TEST_ASSERT_VAL("wrong exclude_user", evsel->core.attr.exclude_user); TEST_ASSERT_VAL("wrong exclude_kernel", !evsel->core.attr.exclude_kernel); TEST_ASSERT_VAL("wrong exclude_hv", evsel->core.attr.exclude_hv); - /* use of precise requires exclude_guest */ - TEST_ASSERT_VAL("wrong exclude guest", evsel->core.attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude guest", !evsel->core.attr.exclude_guest); TEST_ASSERT_VAL("wrong exclude host", !evsel->core.attr.exclude_host); TEST_ASSERT_VAL("wrong precise_ip", evsel->core.attr.precise_ip == 2); TEST_ASSERT_VAL("wrong leader", evsel__has_leader(evsel, leader)); diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 687125570f56..afeb8d815bbf 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1733,10 +1733,6 @@ static int parse_events__modifier_list(struct parse_events_state *parse_state, int exclude = eu | ek | eh; int exclude_GH = group ? evsel->exclude_GH : 0; - if (mod.precise) { - /* use of precise requires exclude_guest */ - eG = 1; - } if (mod.user) { if (!exclude) exclude = eu = ek = eh = 1; -- cgit v1.2.3 From 3b193a57baf15c468e4f86cebc694ca4fe18301b Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:55 -0700 Subject: perf tools: Detect missing kernel features properly The evsel__detect_missing_features() is to check if the attributes of the evsel is supported or not. But it checks the attribute based on the given evsel, it might miss something if the attr doesn't have the bit or give incorrect results if the event is special. Also it maintains the order of the feature that was added to the kernel which means it can assume older features should be supported once it detects the current feature is working. To minimized the confusion and to accurately check the kernel features, I think it's better to use a software event and go through all the features at once. Also make the function static since it's only used in evsel.c. Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-6-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/util/evsel.c | 403 ++++++++++++++++++++++++++++++++++++------------ tools/perf/util/evsel.h | 1 - tools/perf/util/pmu.h | 4 + 3 files changed, 307 insertions(+), 101 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 7f98f9d3394a..9d976acf08dd 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -2085,125 +2086,327 @@ int evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, return err; } -bool evsel__detect_missing_features(struct evsel *evsel) +static bool has_attr_feature(struct perf_event_attr *attr, unsigned long flags) { + int fd = syscall(SYS_perf_event_open, attr, /*pid=*/0, /*cpu=*/-1, + /*group_fd=*/-1, flags); + close(fd); + + if (fd < 0) { + attr->exclude_kernel = 1; + + fd = syscall(SYS_perf_event_open, attr, /*pid=*/0, /*cpu=*/-1, + /*group_fd=*/-1, flags); + close(fd); + } + + if (fd < 0) { + attr->exclude_hv = 1; + + fd = syscall(SYS_perf_event_open, attr, /*pid=*/0, /*cpu=*/-1, + /*group_fd=*/-1, flags); + close(fd); + } + + if (fd < 0) { + attr->exclude_guest = 1; + + fd = syscall(SYS_perf_event_open, attr, /*pid=*/0, /*cpu=*/-1, + /*group_fd=*/-1, flags); + close(fd); + } + + attr->exclude_kernel = 0; + attr->exclude_guest = 0; + attr->exclude_hv = 0; + + return fd >= 0; +} + +static void evsel__detect_missing_pmu_features(struct evsel *evsel) +{ + struct perf_event_attr attr = { + .type = evsel->core.attr.type, + .config = evsel->core.attr.config, + .disabled = 1, + }; + struct perf_pmu *pmu = evsel->pmu; + int old_errno; + + old_errno = errno; + + if (pmu == NULL) + pmu = evsel->pmu = evsel__find_pmu(evsel); + + if (pmu == NULL || pmu->missing_features.checked) + goto out; + /* * Must probe features in the order they were added to the - * perf_event_attr interface. + * perf_event_attr interface. These are PMU specific limitation + * so we can detect with the given hardware event and stop on the + * first one succeeded. */ - if (!perf_missing_features.inherit_sample_read && - evsel->core.attr.inherit && (evsel->core.attr.sample_type & PERF_SAMPLE_READ)) { - perf_missing_features.inherit_sample_read = true; - pr_debug2("Using PERF_SAMPLE_READ / :S modifier is not compatible with inherit, falling back to no-inherit.\n"); - return true; - } else if (!perf_missing_features.branch_counters && - (evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS)) { - perf_missing_features.branch_counters = true; - pr_debug2("switching off branch counters support\n"); + + /* Please add new feature detection here. */ + + attr.exclude_guest = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + pmu->missing_features.exclude_guest = true; + pr_debug2("switching off exclude_guest for PMU %s\n", pmu->name); + +found: + pmu->missing_features.checked = true; +out: + errno = old_errno; +} + +static void evsel__detect_missing_brstack_features(struct evsel *evsel) +{ + static bool detection_done = false; + struct perf_event_attr attr = { + .type = evsel->core.attr.type, + .config = evsel->core.attr.config, + .disabled = 1, + .sample_type = PERF_SAMPLE_BRANCH_STACK, + .sample_period = 1000, + }; + int old_errno; + + if (detection_done) + return; + + old_errno = errno; + + /* + * Must probe features in the order they were added to the + * perf_event_attr interface. These are PMU specific limitation + * so we can detect with the given hardware event and stop on the + * first one succeeded. + */ + + /* Please add new feature detection here. */ + + attr.branch_sample_type = PERF_SAMPLE_BRANCH_COUNTERS; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.branch_counters = true; + pr_debug2("switching off branch counters support\n"); + + attr.branch_sample_type = PERF_SAMPLE_BRANCH_HW_INDEX; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.branch_hw_idx = true; + pr_debug2("switching off branch HW index support\n"); + + attr.branch_sample_type = PERF_SAMPLE_BRANCH_NO_CYCLES | PERF_SAMPLE_BRANCH_NO_FLAGS; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.lbr_flags = true; + pr_debug2_peo("switching off branch sample type no (cycles/flags)\n"); + +found: + detection_done = true; + errno = old_errno; +} + +static bool evsel__detect_missing_features(struct evsel *evsel) +{ + static bool detection_done = false; + struct perf_event_attr attr = { + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_TASK_CLOCK, + .disabled = 1, + }; + int old_errno; + + evsel__detect_missing_pmu_features(evsel); + + if (evsel__has_br_stack(evsel)) + evsel__detect_missing_brstack_features(evsel); + + if (detection_done) + goto check; + + old_errno = errno; + + /* + * Must probe features in the order they were added to the + * perf_event_attr interface. These are kernel core limitation + * not PMU-specific so we can detect with a software event and + * stop on the first one succeeded. + */ + + /* Please add new feature detection here. */ + + attr.inherit = true; + attr.sample_type = PERF_SAMPLE_READ; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.inherit_sample_read = true; + pr_debug2("Using PERF_SAMPLE_READ / :S modifier is not compatible with inherit, falling back to no-inherit.\n"); + attr.inherit = false; + attr.sample_type = 0; + + attr.read_format = PERF_FORMAT_LOST; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.read_lost = true; + pr_debug2("switching off PERF_FORMAT_LOST support\n"); + attr.read_format = 0; + + attr.sample_type = PERF_SAMPLE_WEIGHT_STRUCT; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.weight_struct = true; + pr_debug2("switching off weight struct support\n"); + attr.sample_type = 0; + + attr.sample_type = PERF_SAMPLE_CODE_PAGE_SIZE; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.code_page_size = true; + pr_debug2_peo("Kernel has no PERF_SAMPLE_CODE_PAGE_SIZE support\n"); + attr.sample_type = 0; + + attr.sample_type = PERF_SAMPLE_DATA_PAGE_SIZE; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.data_page_size = true; + pr_debug2_peo("Kernel has no PERF_SAMPLE_DATA_PAGE_SIZE support\n"); + attr.sample_type = 0; + + attr.cgroup = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.cgroup = true; + pr_debug2_peo("Kernel has no cgroup sampling support\n"); + attr.cgroup = 0; + + attr.aux_output = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.aux_output = true; + pr_debug2_peo("Kernel has no attr.aux_output support\n"); + attr.aux_output = 0; + + attr.bpf_event = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.bpf = true; + pr_debug2_peo("switching off bpf_event\n"); + attr.bpf_event = 0; + + attr.ksymbol = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.ksymbol = true; + pr_debug2_peo("switching off ksymbol\n"); + attr.ksymbol = 0; + + attr.write_backward = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.write_backward = true; + pr_debug2_peo("switching off write_backward\n"); + attr.write_backward = 0; + + attr.use_clockid = 1; + attr.clockid = CLOCK_MONOTONIC; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.clockid = true; + pr_debug2_peo("switching off clockid\n"); + attr.use_clockid = 0; + attr.clockid = 0; + + if (has_attr_feature(&attr, /*flags=*/PERF_FLAG_FD_CLOEXEC)) + goto found; + perf_missing_features.cloexec = true; + pr_debug2_peo("switching off cloexec flag\n"); + + attr.mmap2 = 1; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.mmap2 = true; + pr_debug2_peo("switching off mmap2\n"); + attr.mmap2 = 0; + + /* set this unconditionally? */ + perf_missing_features.sample_id_all = true; + pr_debug2_peo("switching off sample_id_all\n"); + + attr.inherit = 1; + attr.read_format = PERF_FORMAT_GROUP; + if (has_attr_feature(&attr, /*flags=*/0)) + goto found; + perf_missing_features.group_read = true; + pr_debug2_peo("switching off group read\n"); + attr.inherit = 0; + attr.read_format = 0; + +found: + detection_done = true; + errno = old_errno; + +check: + if (evsel->core.attr.inherit && + (evsel->core.attr.sample_type & PERF_SAMPLE_READ) && + perf_missing_features.inherit_sample_read) return true; - } else if (!perf_missing_features.read_lost && - (evsel->core.attr.read_format & PERF_FORMAT_LOST)) { - perf_missing_features.read_lost = true; - pr_debug2("switching off PERF_FORMAT_LOST support\n"); + + if ((evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS) && + perf_missing_features.branch_counters) return true; - } else if (!perf_missing_features.weight_struct && - (evsel->core.attr.sample_type & PERF_SAMPLE_WEIGHT_STRUCT)) { - perf_missing_features.weight_struct = true; - pr_debug2("switching off weight struct support\n"); + + if ((evsel->core.attr.read_format & PERF_FORMAT_LOST) && + perf_missing_features.read_lost) return true; - } else if (!perf_missing_features.code_page_size && - (evsel->core.attr.sample_type & PERF_SAMPLE_CODE_PAGE_SIZE)) { - perf_missing_features.code_page_size = true; - pr_debug2_peo("Kernel has no PERF_SAMPLE_CODE_PAGE_SIZE support, bailing out\n"); - return false; - } else if (!perf_missing_features.data_page_size && - (evsel->core.attr.sample_type & PERF_SAMPLE_DATA_PAGE_SIZE)) { - perf_missing_features.data_page_size = true; - pr_debug2_peo("Kernel has no PERF_SAMPLE_DATA_PAGE_SIZE support, bailing out\n"); - return false; - } else if (!perf_missing_features.cgroup && evsel->core.attr.cgroup) { - perf_missing_features.cgroup = true; - pr_debug2_peo("Kernel has no cgroup sampling support, bailing out\n"); - return false; - } else if (!perf_missing_features.branch_hw_idx && - (evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX)) { - perf_missing_features.branch_hw_idx = true; - pr_debug2("switching off branch HW index support\n"); + + if ((evsel->core.attr.sample_type & PERF_SAMPLE_WEIGHT_STRUCT) && + perf_missing_features.weight_struct) return true; - } else if (!perf_missing_features.aux_output && evsel->core.attr.aux_output) { - perf_missing_features.aux_output = true; - pr_debug2_peo("Kernel has no attr.aux_output support, bailing out\n"); - return false; - } else if (!perf_missing_features.bpf && evsel->core.attr.bpf_event) { - perf_missing_features.bpf = true; - pr_debug2_peo("switching off bpf_event\n"); + + if (evsel->core.attr.use_clockid && evsel->core.attr.clockid != CLOCK_MONOTONIC && + !perf_missing_features.clockid) { + perf_missing_features.clockid_wrong = true; return true; - } else if (!perf_missing_features.ksymbol && evsel->core.attr.ksymbol) { - perf_missing_features.ksymbol = true; - pr_debug2_peo("switching off ksymbol\n"); + } + + if (evsel->core.attr.use_clockid && perf_missing_features.clockid) return true; - } else if (!perf_missing_features.write_backward && evsel->core.attr.write_backward) { - perf_missing_features.write_backward = true; - pr_debug2_peo("switching off write_backward\n"); - return false; - } else if (!perf_missing_features.clockid_wrong && evsel->core.attr.use_clockid) { - perf_missing_features.clockid_wrong = true; - pr_debug2_peo("switching off clockid\n"); + + if ((evsel->open_flags & PERF_FLAG_FD_CLOEXEC) && + perf_missing_features.cloexec) return true; - } else if (!perf_missing_features.clockid && evsel->core.attr.use_clockid) { - perf_missing_features.clockid = true; - pr_debug2_peo("switching off use_clockid\n"); + + if (evsel->core.attr.mmap2 && perf_missing_features.mmap2) return true; - } else if (!perf_missing_features.cloexec && (evsel->open_flags & PERF_FLAG_FD_CLOEXEC)) { - perf_missing_features.cloexec = true; - pr_debug2_peo("switching off cloexec flag\n"); + + if ((evsel->core.attr.branch_sample_type & (PERF_SAMPLE_BRANCH_NO_FLAGS | + PERF_SAMPLE_BRANCH_NO_CYCLES)) && + perf_missing_features.lbr_flags) return true; - } else if (!perf_missing_features.mmap2 && evsel->core.attr.mmap2) { - perf_missing_features.mmap2 = true; - pr_debug2_peo("switching off mmap2\n"); + + if (evsel->core.attr.inherit && (evsel->core.attr.read_format & PERF_FORMAT_GROUP) && + perf_missing_features.group_read) return true; - } else if (evsel->core.attr.exclude_guest || evsel->core.attr.exclude_host) { - if (evsel->pmu == NULL) - evsel->pmu = evsel__find_pmu(evsel); - - if (evsel->pmu) - evsel->pmu->missing_features.exclude_guest = true; - else { - /* we cannot find PMU, disable attrs now */ - evsel->core.attr.exclude_host = false; - evsel->core.attr.exclude_guest = false; - } - if (evsel->exclude_GH) { - pr_debug2_peo("PMU has no exclude_host/guest support, bailing out\n"); - return false; - } - if (!perf_missing_features.exclude_guest) { - perf_missing_features.exclude_guest = true; - pr_debug2_peo("switching off exclude_guest, exclude_host\n"); - } + if (evsel->core.attr.ksymbol && perf_missing_features.ksymbol) return true; - } else if (!perf_missing_features.sample_id_all) { - perf_missing_features.sample_id_all = true; - pr_debug2_peo("switching off sample_id_all\n"); + + if (evsel->core.attr.bpf_event && perf_missing_features.bpf) return true; - } else if (!perf_missing_features.lbr_flags && - (evsel->core.attr.branch_sample_type & - (PERF_SAMPLE_BRANCH_NO_CYCLES | - PERF_SAMPLE_BRANCH_NO_FLAGS))) { - perf_missing_features.lbr_flags = true; - pr_debug2_peo("switching off branch sample type no (cycles/flags)\n"); + + if ((evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX) && + perf_missing_features.branch_hw_idx) return true; - } else if (!perf_missing_features.group_read && - evsel->core.attr.inherit && - (evsel->core.attr.read_format & PERF_FORMAT_GROUP) && - evsel__is_group_leader(evsel)) { - perf_missing_features.group_read = true; - pr_debug2_peo("switching off group read\n"); + + if (evsel->core.attr.sample_id_all && perf_missing_features.sample_id_all) return true; - } else { - return false; - } + + return false; } static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 9fcaf417b277..04934a7af174 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -343,7 +343,6 @@ int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus, void evsel__close(struct evsel *evsel); int evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, struct perf_thread_map *threads); -bool evsel__detect_missing_features(struct evsel *evsel); bool evsel__precise_ip_fallback(struct evsel *evsel); diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index e400db9e9eb1..b86b3c3685a2 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -170,6 +170,10 @@ struct perf_pmu { * exclude_host. */ bool exclude_guest; + /** + * @checked: Are the missing features checked? + */ + bool checked; } missing_features; /** -- cgit v1.2.3 From 28398ce1726e5dfa74f6305dd842e0fb7e332ef1 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:56 -0700 Subject: perf tools: Move x86__is_amd_cpu() to util/env.c It can be called from non-x86 platform so let's move it to the general util directory. Also add a new helper perf_env__is_x86_amd_cpu() so that it can be called with an existing perf_env as well. Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-7-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/arch/x86/util/Build | 1 - tools/perf/arch/x86/util/env.c | 19 ------------------- tools/perf/arch/x86/util/env.h | 7 ------- tools/perf/arch/x86/util/pmu.c | 2 +- tools/perf/util/env.c | 23 +++++++++++++++++++++++ tools/perf/util/env.h | 4 ++++ 6 files changed, 28 insertions(+), 28 deletions(-) delete mode 100644 tools/perf/arch/x86/util/env.c delete mode 100644 tools/perf/arch/x86/util/env.h (limited to 'tools') diff --git a/tools/perf/arch/x86/util/Build b/tools/perf/arch/x86/util/Build index 9705cda4f240..bc56a8e70f34 100644 --- a/tools/perf/arch/x86/util/Build +++ b/tools/perf/arch/x86/util/Build @@ -10,7 +10,6 @@ perf-util-y += evlist.o perf-util-y += mem-events.o perf-util-y += evsel.o perf-util-y += iostat.o -perf-util-y += env.o perf-util-$(CONFIG_LIBDW) += dwarf-regs.o perf-util-$(CONFIG_BPF_PROLOGUE) += dwarf-regs.o diff --git a/tools/perf/arch/x86/util/env.c b/tools/perf/arch/x86/util/env.c deleted file mode 100644 index 3e537ffb1353..000000000000 --- a/tools/perf/arch/x86/util/env.c +++ /dev/null @@ -1,19 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include "linux/string.h" -#include "util/env.h" -#include "env.h" - -bool x86__is_amd_cpu(void) -{ - struct perf_env env = { .total_mem = 0, }; - static int is_amd; /* 0: Uninitialized, 1: Yes, -1: No */ - - if (is_amd) - goto ret; - - perf_env__cpuid(&env); - is_amd = env.cpuid && strstarts(env.cpuid, "AuthenticAMD") ? 1 : -1; - perf_env__exit(&env); -ret: - return is_amd >= 1 ? true : false; -} diff --git a/tools/perf/arch/x86/util/env.h b/tools/perf/arch/x86/util/env.h deleted file mode 100644 index d78f080b6b3f..000000000000 --- a/tools/perf/arch/x86/util/env.h +++ /dev/null @@ -1,7 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _X86_ENV_H -#define _X86_ENV_H - -bool x86__is_amd_cpu(void); - -#endif /* _X86_ENV_H */ diff --git a/tools/perf/arch/x86/util/pmu.c b/tools/perf/arch/x86/util/pmu.c index c3d89d6ba1bf..e0060dac2a9f 100644 --- a/tools/perf/arch/x86/util/pmu.c +++ b/tools/perf/arch/x86/util/pmu.c @@ -16,7 +16,7 @@ #include "../../../util/fncache.h" #include "../../../util/pmus.h" #include "mem-events.h" -#include "env.h" +#include "util/env.h" void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused) { diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c index 1edbccfc3281..ccb464026642 100644 --- a/tools/perf/util/env.c +++ b/tools/perf/util/env.c @@ -5,6 +5,7 @@ #include "util/header.h" #include "linux/compiler.h" #include +#include #include #include "cgroup.h" #include @@ -639,3 +640,25 @@ void perf_env__find_br_cntr_info(struct perf_env *env, env->pmu_caps->br_cntr_width; } } + +bool perf_env__is_x86_amd_cpu(struct perf_env *env) +{ + static int is_amd; /* 0: Uninitialized, 1: Yes, -1: No */ + + if (is_amd == 0) + is_amd = env->cpuid && strstarts(env->cpuid, "AuthenticAMD") ? 1 : -1; + + return is_amd >= 1 ? true : false; +} + +bool x86__is_amd_cpu(void) +{ + struct perf_env env = { .total_mem = 0, }; + bool is_amd; + + perf_env__cpuid(&env); + is_amd = perf_env__is_x86_amd_cpu(&env); + perf_env__exit(&env); + + return is_amd; +} diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h index 51b36c36019b..ae604c4edbb7 100644 --- a/tools/perf/util/env.h +++ b/tools/perf/util/env.h @@ -195,4 +195,8 @@ bool perf_env__has_pmu_mapping(struct perf_env *env, const char *pmu_name); void perf_env__find_br_cntr_info(struct perf_env *env, unsigned int *nr, unsigned int *width); + +bool x86__is_amd_cpu(void); +bool perf_env__is_x86_amd_cpu(struct perf_env *env); + #endif /* __PERF_ENV_H */ -- cgit v1.2.3 From af954f76eea56453713ae657f6812d4063f9bc57 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:57 -0700 Subject: perf tools: Check fallback error and order The perf_event_open might fail due to various reasons, so blindly reducing precise_ip level might not be the best way to deal with it. It seems the kernel return -EOPNOTSUPP when PMU doesn't support the given precise level. Let's try again with the correct error code. This caused a problem on AMD, as it stops on precise_ip of 2 for IBS but user events with exclude_kernel=1 cannot make progress. Let's add the evsel__handle_error_quirks() to this case specially. I plan to work on the kernel side to improve this situation but it'd still need some special handling for IBS. Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-8-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/util/evsel.c | 38 +++++++++++++++++++++++++++++--------- 1 file changed, 29 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 9d976acf08dd..f780e30aa259 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2143,9 +2143,9 @@ static void evsel__detect_missing_pmu_features(struct evsel *evsel) /* * Must probe features in the order they were added to the - * perf_event_attr interface. These are PMU specific limitation - * so we can detect with the given hardware event and stop on the - * first one succeeded. + * perf_event_attr interface. These are kernel core limitation but + * specific to PMUs with branch stack. So we can detect with the given + * hardware event and stop on the first one succeeded. */ /* Please add new feature detection here. */ @@ -2409,6 +2409,25 @@ check: return false; } +static bool evsel__handle_error_quirks(struct evsel *evsel, int error) +{ + /* + * AMD core PMU tries to forward events with precise_ip to IBS PMU + * implicitly. But IBS PMU has more restrictions so it can fail with + * supported event attributes. Let's forward it back to the core PMU + * by clearing precise_ip only if it's from precise_max (:P). + */ + if ((error == -EINVAL || error == -ENOENT) && x86__is_amd_cpu() && + evsel->core.attr.precise_ip && evsel->precise_max) { + evsel->core.attr.precise_ip = 0; + pr_debug2_peo("removing precise_ip on AMD\n"); + display_attr(&evsel->core.attr); + return true; + } + + return false; +} + static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, struct perf_thread_map *threads, int start_cpu_map_idx, int end_cpu_map_idx) @@ -2527,9 +2546,6 @@ retry_open: return 0; try_fallback: - if (evsel__precise_ip_fallback(evsel)) - goto retry_open; - if (evsel__ignore_missing_thread(evsel, perf_cpu_map__nr(cpus), idx, threads, thread, err)) { /* We just removed 1 thread, so lower the upper nthreads limit. */ @@ -2546,11 +2562,15 @@ try_fallback: if (err == -EMFILE && rlimit__increase_nofile(&set_rlimit)) goto retry_open; - if (err != -EINVAL || idx > 0 || thread > 0) - goto out_close; + if (err == -EOPNOTSUPP && evsel__precise_ip_fallback(evsel)) + goto retry_open; - if (evsel__detect_missing_features(evsel)) + if (err == -EINVAL && evsel__detect_missing_features(evsel)) goto fallback_missing_features; + + if (evsel__handle_error_quirks(evsel, err)) + goto retry_open; + out_close: if (err) threads->err_thread = thread; -- cgit v1.2.3 From 634d36f82517eb5c6a9b9ec7fe3ba19dbbcb7809 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:58 -0700 Subject: perf record: Just use "cycles:P" as the default event The fallback logic can add ":u" modifier if needed. Reviewed-by: Ian Rogers Reviewed-by: James Clark Reviewed-by: Ravi Bangoria Acked-by: Kan Liang Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-9-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/builtin-record.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index adbaf80b398c..f83252472921 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -4157,9 +4157,7 @@ int cmd_record(int argc, const char **argv) record.opts.tail_synthesize = true; if (rec->evlist->core.nr_entries == 0) { - bool can_profile_kernel = perf_event_paranoid_check(1); - - err = parse_event(rec->evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu"); + err = parse_event(rec->evlist, "cycles:P"); if (err) goto out; } -- cgit v1.2.3 From 36fae9f93e5f00eb3e410784ce99a4d7503aa12e Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 15 Oct 2024 23:23:59 -0700 Subject: perf test: Add precise_max subtest to the perf record shell test It's a very simply test just to run with cycles:P and instructions:P events. Cc: Ravi Bangoria Cc: James Clark Cc: Atish Patra Cc: Mingwei Zhang Cc: Kajol Jain Cc: Thomas Richter Cc: Palmer Dabbelt Link: https://lore.kernel.org/r/20241016062359.264929-10-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/record.sh | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'tools') diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh index 3eee72242290..f0e79200b981 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -271,6 +271,30 @@ test_topdown_leader_sampling() { echo "Topdown leader sampling test [Success]" } +test_precise_max() { + echo "precise_max attribute test" + if ! perf stat -e "cycles,instructions" true 2> /dev/null + then + echo "precise_max attribute [Skipped no hardware events]" + return + fi + # Just to make sure it doesn't fail + if ! perf record -o "${perfdata}" -e "cycles:P" true 2> /dev/null + then + echo "precise_max attribute [Failed cycles:P event]" + err=1 + return + fi + # On AMD, cycles and instructions events are treated differently + if ! perf record -o "${perfdata}" -e "instructions:P" true 2> /dev/null + then + echo "precise_max attribute [Failed instructions:P event]" + err=1 + return + fi + echo "precise_max attribute test [Success]" +} + # raise the limit of file descriptors to minimum if [[ $default_fd_limit -lt $min_fd_limit ]]; then ulimit -Sn $min_fd_limit @@ -284,6 +308,7 @@ test_branch_counter test_cgroup test_leader_sampling test_topdown_leader_sampling +test_precise_max # restore the default value ulimit -Sn $default_fd_limit -- cgit v1.2.3 From 94682d6ad9692855b2ae16bb93c408ad0a5bc9ba Mon Sep 17 00:00:00 2001 From: Jordan Rife Date: Tue, 22 Oct 2024 15:29:01 +0000 Subject: selftests/bpf: Migrate *_POST_BIND test cases to prog_tests Move all BPF_CGROUP_INET6_POST_BIND and BPF_CGROUP_INET4_POST_BIND test cases to a new prog_test, prog_tests/sock_post_bind.c, except for LOAD_REJECT test cases. Signed-off-by: Jordan Rife Link: https://lore.kernel.org/r/20241022152913.574836-2-jrife@google.com Signed-off-by: Martin KaFai Lau --- .../selftests/bpf/prog_tests/sock_post_bind.c | 426 +++++++++++++++++++++ tools/testing/selftests/bpf/test_sock.c | 245 ------------ 2 files changed, 426 insertions(+), 245 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/sock_post_bind.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/sock_post_bind.c b/tools/testing/selftests/bpf/prog_tests/sock_post_bind.c new file mode 100644 index 000000000000..788135c9c673 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/sock_post_bind.c @@ -0,0 +1,426 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include "cgroup_helpers.h" + +#define TEST_NS "sock_post_bind" + +static char bpf_log_buf[4096]; + +static struct sock_post_bind_test { + const char *descr; + /* BPF prog properties */ + const struct bpf_insn insns[64]; + enum bpf_attach_type attach_type; + enum bpf_attach_type expected_attach_type; + /* Socket properties */ + int domain; + int type; + /* Endpoint to bind() to */ + const char *ip; + unsigned short port; + unsigned short port_retry; + + /* Expected test result */ + enum { + ATTACH_REJECT, + BIND_REJECT, + SUCCESS, + RETRY_SUCCESS, + RETRY_REJECT + } result; +} tests[] = { + { + .descr = "attach type mismatch bind4 vs bind6", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, + .attach_type = BPF_CGROUP_INET6_POST_BIND, + .result = ATTACH_REJECT, + }, + { + .descr = "attach type mismatch bind6 vs bind4", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, + .attach_type = BPF_CGROUP_INET4_POST_BIND, + .result = ATTACH_REJECT, + }, + { + .descr = "attach type mismatch default vs bind4", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = 0, + .attach_type = BPF_CGROUP_INET4_POST_BIND, + .result = ATTACH_REJECT, + }, + { + .descr = "attach type mismatch bind6 vs sock_create", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + .result = ATTACH_REJECT, + }, + { + .descr = "bind4 reject all", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, + .attach_type = BPF_CGROUP_INET4_POST_BIND, + .domain = AF_INET, + .type = SOCK_STREAM, + .ip = "0.0.0.0", + .result = BIND_REJECT, + }, + { + .descr = "bind6 reject all", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, + .attach_type = BPF_CGROUP_INET6_POST_BIND, + .domain = AF_INET6, + .type = SOCK_STREAM, + .ip = "::", + .result = BIND_REJECT, + }, + { + .descr = "bind6 deny specific IP & port", + .insns = { + BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), + + /* if (ip == expected && port == expected) */ + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_ip6[3])), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, + __bpf_constant_ntohl(0x00000001), 4), + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_port)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2), + + /* return DENY; */ + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP_A(1), + + /* else return ALLOW; */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, + .attach_type = BPF_CGROUP_INET6_POST_BIND, + .domain = AF_INET6, + .type = SOCK_STREAM, + .ip = "::1", + .port = 8193, + .result = BIND_REJECT, + }, + { + .descr = "bind4 allow specific IP & port", + .insns = { + BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), + + /* if (ip == expected && port == expected) */ + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_ip4)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, + __bpf_constant_ntohl(0x7F000001), 4), + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_port)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2), + + /* return ALLOW; */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_JMP_A(1), + + /* else return DENY; */ + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, + .attach_type = BPF_CGROUP_INET4_POST_BIND, + .domain = AF_INET, + .type = SOCK_STREAM, + .ip = "127.0.0.1", + .port = 4098, + .result = SUCCESS, + }, + { + .descr = "bind4 deny specific IP & port of TCP, and retry", + .insns = { + BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), + + /* if (ip == expected && port == expected) */ + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_ip4)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, + __bpf_constant_ntohl(0x7F000001), 4), + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_port)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2), + + /* return DENY; */ + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP_A(1), + + /* else return ALLOW; */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, + .attach_type = BPF_CGROUP_INET4_POST_BIND, + .domain = AF_INET, + .type = SOCK_STREAM, + .ip = "127.0.0.1", + .port = 4098, + .port_retry = 5000, + .result = RETRY_SUCCESS, + }, + { + .descr = "bind4 deny specific IP & port of UDP, and retry", + .insns = { + BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), + + /* if (ip == expected && port == expected) */ + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_ip4)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, + __bpf_constant_ntohl(0x7F000001), 4), + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_port)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2), + + /* return DENY; */ + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP_A(1), + + /* else return ALLOW; */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, + .attach_type = BPF_CGROUP_INET4_POST_BIND, + .domain = AF_INET, + .type = SOCK_DGRAM, + .ip = "127.0.0.1", + .port = 4098, + .port_retry = 5000, + .result = RETRY_SUCCESS, + }, + { + .descr = "bind6 deny specific IP & port, and retry", + .insns = { + BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), + + /* if (ip == expected && port == expected) */ + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_ip6[3])), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, + __bpf_constant_ntohl(0x00000001), 4), + BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock, src_port)), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2), + + /* return DENY; */ + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP_A(1), + + /* else return ALLOW; */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, + .attach_type = BPF_CGROUP_INET6_POST_BIND, + .domain = AF_INET6, + .type = SOCK_STREAM, + .ip = "::1", + .port = 8193, + .port_retry = 9000, + .result = RETRY_SUCCESS, + }, + { + .descr = "bind4 allow all", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, + .attach_type = BPF_CGROUP_INET4_POST_BIND, + .domain = AF_INET, + .type = SOCK_STREAM, + .ip = "0.0.0.0", + .result = SUCCESS, + }, + { + .descr = "bind6 allow all", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, + .attach_type = BPF_CGROUP_INET6_POST_BIND, + .domain = AF_INET6, + .type = SOCK_STREAM, + .ip = "::", + .result = SUCCESS, + }, +}; + +static int load_prog(const struct bpf_insn *insns, + enum bpf_attach_type expected_attach_type) +{ + LIBBPF_OPTS(bpf_prog_load_opts, opts, + .expected_attach_type = expected_attach_type, + .log_level = 2, + .log_buf = bpf_log_buf, + .log_size = sizeof(bpf_log_buf), + ); + int fd, insns_cnt = 0; + + for (; + insns[insns_cnt].code != (BPF_JMP | BPF_EXIT); + insns_cnt++) { + } + insns_cnt++; + + fd = bpf_prog_load(BPF_PROG_TYPE_CGROUP_SOCK, NULL, "GPL", insns, + insns_cnt, &opts); + if (fd < 0) + fprintf(stderr, "%s\n", bpf_log_buf); + + return fd; +} + +static int bind_sock(int domain, int type, const char *ip, + unsigned short port, unsigned short port_retry) +{ + struct sockaddr_storage addr; + struct sockaddr_in6 *addr6; + struct sockaddr_in *addr4; + int sockfd = -1; + socklen_t len; + int res = SUCCESS; + + sockfd = socket(domain, type, 0); + if (sockfd < 0) + goto err; + + memset(&addr, 0, sizeof(addr)); + + if (domain == AF_INET) { + len = sizeof(struct sockaddr_in); + addr4 = (struct sockaddr_in *)&addr; + addr4->sin_family = domain; + addr4->sin_port = htons(port); + if (inet_pton(domain, ip, (void *)&addr4->sin_addr) != 1) + goto err; + } else if (domain == AF_INET6) { + len = sizeof(struct sockaddr_in6); + addr6 = (struct sockaddr_in6 *)&addr; + addr6->sin6_family = domain; + addr6->sin6_port = htons(port); + if (inet_pton(domain, ip, (void *)&addr6->sin6_addr) != 1) + goto err; + } else { + goto err; + } + + if (bind(sockfd, (const struct sockaddr *)&addr, len) == -1) { + /* sys_bind() may fail for different reasons, errno has to be + * checked to confirm that BPF program rejected it. + */ + if (errno != EPERM) + goto err; + if (port_retry) + goto retry; + res = BIND_REJECT; + goto out; + } + + goto out; +retry: + if (domain == AF_INET) + addr4->sin_port = htons(port_retry); + else + addr6->sin6_port = htons(port_retry); + if (bind(sockfd, (const struct sockaddr *)&addr, len) == -1) { + if (errno != EPERM) + goto err; + res = RETRY_REJECT; + } else { + res = RETRY_SUCCESS; + } + goto out; +err: + res = -1; +out: + close(sockfd); + return res; +} + +static int run_test(int cgroup_fd, struct sock_post_bind_test *test) +{ + int err, prog_fd, res, ret = 0; + + prog_fd = load_prog(test->insns, test->expected_attach_type); + if (prog_fd < 0) + goto err; + + err = bpf_prog_attach(prog_fd, cgroup_fd, test->attach_type, 0); + if (err < 0) { + if (test->result == ATTACH_REJECT) + goto out; + else + goto err; + } + + res = bind_sock(test->domain, test->type, test->ip, test->port, + test->port_retry); + if (res > 0 && test->result == res) + goto out; +err: + ret = -1; +out: + /* Detaching w/o checking return code: best effort attempt. */ + if (prog_fd != -1) + bpf_prog_detach(cgroup_fd, test->attach_type); + close(prog_fd); + return ret; +} + +void test_sock_post_bind(void) +{ + struct netns_obj *ns; + int cgroup_fd; + int i; + + cgroup_fd = test__join_cgroup("/post_bind"); + if (!ASSERT_OK_FD(cgroup_fd, "join_cgroup")) + return; + + ns = netns_new(TEST_NS, true); + if (!ASSERT_OK_PTR(ns, "netns_new")) + goto cleanup; + + for (i = 0; i < ARRAY_SIZE(tests); i++) { + if (!test__start_subtest(tests[i].descr)) + continue; + + ASSERT_OK(run_test(cgroup_fd, &tests[i]), tests[i].descr); + } + +cleanup: + netns_free(ns); + close(cgroup_fd); +} diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c index 810c3740b2cc..9ed908163d98 100644 --- a/tools/testing/selftests/bpf/test_sock.c +++ b/tools/testing/selftests/bpf/test_sock.c @@ -127,251 +127,6 @@ static struct sock_test tests[] = { .port = 8097, .result = SUCCESS, }, - { - .descr = "attach type mismatch bind4 vs bind6", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, - .attach_type = BPF_CGROUP_INET6_POST_BIND, - .result = ATTACH_REJECT, - }, - { - .descr = "attach type mismatch bind6 vs bind4", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .result = ATTACH_REJECT, - }, - { - .descr = "attach type mismatch default vs bind4", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = 0, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .result = ATTACH_REJECT, - }, - { - .descr = "attach type mismatch bind6 vs sock_create", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, - .attach_type = BPF_CGROUP_INET_SOCK_CREATE, - .result = ATTACH_REJECT, - }, - { - .descr = "bind4 reject all", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .domain = AF_INET, - .type = SOCK_STREAM, - .ip = "0.0.0.0", - .result = BIND_REJECT, - }, - { - .descr = "bind6 reject all", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, - .attach_type = BPF_CGROUP_INET6_POST_BIND, - .domain = AF_INET6, - .type = SOCK_STREAM, - .ip = "::", - .result = BIND_REJECT, - }, - { - .descr = "bind6 deny specific IP & port", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - - /* if (ip == expected && port == expected) */ - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_ip6[3])), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, - __bpf_constant_ntohl(0x00000001), 4), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_port)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2), - - /* return DENY; */ - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_JMP_A(1), - - /* else return ALLOW; */ - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, - .attach_type = BPF_CGROUP_INET6_POST_BIND, - .domain = AF_INET6, - .type = SOCK_STREAM, - .ip = "::1", - .port = 8193, - .result = BIND_REJECT, - }, - { - .descr = "bind4 allow specific IP & port", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - - /* if (ip == expected && port == expected) */ - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_ip4)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, - __bpf_constant_ntohl(0x7F000001), 4), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_port)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2), - - /* return ALLOW; */ - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_JMP_A(1), - - /* else return DENY; */ - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .domain = AF_INET, - .type = SOCK_STREAM, - .ip = "127.0.0.1", - .port = 4098, - .result = SUCCESS, - }, - { - .descr = "bind4 deny specific IP & port of TCP, and retry", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - - /* if (ip == expected && port == expected) */ - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_ip4)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, - __bpf_constant_ntohl(0x7F000001), 4), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_port)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2), - - /* return DENY; */ - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_JMP_A(1), - - /* else return ALLOW; */ - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .domain = AF_INET, - .type = SOCK_STREAM, - .ip = "127.0.0.1", - .port = 4098, - .port_retry = 5000, - .result = RETRY_SUCCESS, - }, - { - .descr = "bind4 deny specific IP & port of UDP, and retry", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - - /* if (ip == expected && port == expected) */ - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_ip4)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, - __bpf_constant_ntohl(0x7F000001), 4), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_port)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2), - - /* return DENY; */ - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_JMP_A(1), - - /* else return ALLOW; */ - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .domain = AF_INET, - .type = SOCK_DGRAM, - .ip = "127.0.0.1", - .port = 4098, - .port_retry = 5000, - .result = RETRY_SUCCESS, - }, - { - .descr = "bind6 deny specific IP & port, and retry", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - - /* if (ip == expected && port == expected) */ - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_ip6[3])), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, - __bpf_constant_ntohl(0x00000001), 4), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_port)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2), - - /* return DENY; */ - BPF_MOV64_IMM(BPF_REG_0, 0), - BPF_JMP_A(1), - - /* else return ALLOW; */ - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, - .attach_type = BPF_CGROUP_INET6_POST_BIND, - .domain = AF_INET6, - .type = SOCK_STREAM, - .ip = "::1", - .port = 8193, - .port_retry = 9000, - .result = RETRY_SUCCESS, - }, - { - .descr = "bind4 allow all", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .domain = AF_INET, - .type = SOCK_STREAM, - .ip = "0.0.0.0", - .result = SUCCESS, - }, - { - .descr = "bind6 allow all", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, - .attach_type = BPF_CGROUP_INET6_POST_BIND, - .domain = AF_INET6, - .type = SOCK_STREAM, - .ip = "::", - .result = SUCCESS, - }, }; static size_t probe_prog_length(const struct bpf_insn *fp) -- cgit v1.2.3 From c17f9734e35b4ca86c67d0a49780978a16effa94 Mon Sep 17 00:00:00 2001 From: Jordan Rife Date: Tue, 22 Oct 2024 15:29:02 +0000 Subject: selftests/bpf: Migrate LOAD_REJECT test cases to prog_tests Move LOAD_REJECT test cases from test_sock.c to an equivalent set of verifier tests in progs/verifier_sock.c. Signed-off-by: Jordan Rife Link: https://lore.kernel.org/r/20241022152913.574836-3-jrife@google.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/progs/verifier_sock.c | 60 +++++++++++++++++++++++ tools/testing/selftests/bpf/test_sock.c | 52 -------------------- 2 files changed, 60 insertions(+), 52 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/verifier_sock.c b/tools/testing/selftests/bpf/progs/verifier_sock.c index ee76b51005ab..d3e70e38e442 100644 --- a/tools/testing/selftests/bpf/progs/verifier_sock.c +++ b/tools/testing/selftests/bpf/progs/verifier_sock.c @@ -977,4 +977,64 @@ l1_%=: r0 = *(u8*)(r7 + 0); \ : __clobber_all); } +SEC("cgroup/post_bind4") +__description("sk->src_ip6[0] [load 1st byte]") +__failure __msg("invalid bpf_context access off=28 size=2") +__naked void post_bind4_read_src_ip6(void) +{ + asm volatile (" \ + r6 = r1; \ + r7 = *(u16*)(r6 + %[bpf_sock_src_ip6_0]); \ + r0 = 1; \ + exit; \ +" : + : __imm_const(bpf_sock_src_ip6_0, offsetof(struct bpf_sock, src_ip6[0])) + : __clobber_all); +} + +SEC("cgroup/post_bind4") +__description("sk->mark [load mark]") +__failure __msg("invalid bpf_context access off=16 size=2") +__naked void post_bind4_read_mark(void) +{ + asm volatile (" \ + r6 = r1; \ + r7 = *(u16*)(r6 + %[bpf_sock_mark]); \ + r0 = 1; \ + exit; \ +" : + : __imm_const(bpf_sock_mark, offsetof(struct bpf_sock, mark)) + : __clobber_all); +} + +SEC("cgroup/post_bind6") +__description("sk->src_ip4 [load src_ip4]") +__failure __msg("invalid bpf_context access off=24 size=2") +__naked void post_bind6_read_src_ip4(void) +{ + asm volatile (" \ + r6 = r1; \ + r7 = *(u16*)(r6 + %[bpf_sock_src_ip4]); \ + r0 = 1; \ + exit; \ +" : + : __imm_const(bpf_sock_src_ip4, offsetof(struct bpf_sock, src_ip4)) + : __clobber_all); +} + +SEC("cgroup/sock_create") +__description("sk->src_port [word load]") +__failure __msg("invalid bpf_context access off=44 size=2") +__naked void sock_create_read_src_port(void) +{ + asm volatile (" \ + r6 = r1; \ + r7 = *(u16*)(r6 + %[bpf_sock_src_port]); \ + r0 = 1; \ + exit; \ +" : + : __imm_const(bpf_sock_src_port, offsetof(struct bpf_sock, src_port)) + : __clobber_all); +} + char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c index 9ed908163d98..26dff88abbaa 100644 --- a/tools/testing/selftests/bpf/test_sock.c +++ b/tools/testing/selftests/bpf/test_sock.c @@ -47,58 +47,6 @@ struct sock_test { }; static struct sock_test tests[] = { - { - .descr = "bind4 load with invalid access: src_ip6", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_ip6[0])), - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .result = LOAD_REJECT, - }, - { - .descr = "bind4 load with invalid access: mark", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, mark)), - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET4_POST_BIND, - .attach_type = BPF_CGROUP_INET4_POST_BIND, - .result = LOAD_REJECT, - }, - { - .descr = "bind6 load with invalid access: src_ip4", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_ip4)), - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET6_POST_BIND, - .attach_type = BPF_CGROUP_INET6_POST_BIND, - .result = LOAD_REJECT, - }, - { - .descr = "sock_create load with invalid access: src_port", - .insns = { - BPF_MOV64_REG(BPF_REG_6, BPF_REG_1), - BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, - offsetof(struct bpf_sock, src_port)), - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, - .attach_type = BPF_CGROUP_INET_SOCK_CREATE, - .result = LOAD_REJECT, - }, { .descr = "sock_create load w/o expected_attach_type (compat mode)", .insns = { -- cgit v1.2.3 From af522f13e9177eca0111562a38cc8ebb6d55f820 Mon Sep 17 00:00:00 2001 From: Jordan Rife Date: Tue, 22 Oct 2024 15:29:03 +0000 Subject: selftests/bpf: Migrate BPF_CGROUP_INET_SOCK_CREATE test cases to prog_tests Move the "load w/o expected_attach_type" test case to prog_tests/sock_create.c and drop the remaining test case, as it is made redundant with the existing coverage inside prog_tests/sock_create.c. Signed-off-by: Jordan Rife Link: https://lore.kernel.org/r/20241022152913.574836-4-jrife@google.com Signed-off-by: Martin KaFai Lau --- .../testing/selftests/bpf/prog_tests/sock_create.c | 35 +++++++++++++++------- tools/testing/selftests/bpf/test_sock.c | 28 ----------------- 2 files changed, 25 insertions(+), 38 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/sock_create.c b/tools/testing/selftests/bpf/prog_tests/sock_create.c index 17a3713621dd..187ffc5e60c4 100644 --- a/tools/testing/selftests/bpf/prog_tests/sock_create.c +++ b/tools/testing/selftests/bpf/prog_tests/sock_create.c @@ -237,6 +237,19 @@ static struct sock_create_test { .error = DENY_CREATE, }, + { + .descr = "load w/o expected_attach_type (compat mode)", + .insns = { + /* return 1 */ + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN(), + }, + .expected_attach_type = 0, + .attach_type = BPF_CGROUP_INET_SOCK_CREATE, + + .domain = AF_INET, + .type = SOCK_STREAM, + }, }; static int load_prog(const struct bpf_insn *insns, @@ -291,16 +304,18 @@ static int run_test(int cgroup_fd, struct sock_create_test *test) goto detach_prog; } - err = getsockopt(sock_fd, SOL_SOCKET, test->optname, &optval, &optlen); - if (err) { - log_err("Failed to call getsockopt"); - goto cleanup; - } - - if (optval != test->optval) { - errno = 0; - log_err("getsockopt returned unexpected optval"); - goto cleanup; + if (test->optname) { + err = getsockopt(sock_fd, SOL_SOCKET, test->optname, &optval, &optlen); + if (err) { + log_err("Failed to call getsockopt"); + goto cleanup; + } + + if (optval != test->optval) { + errno = 0; + log_err("getsockopt returned unexpected optval"); + goto cleanup; + } } ret = test->error != OK; diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c index 26dff88abbaa..f97850f1d84a 100644 --- a/tools/testing/selftests/bpf/test_sock.c +++ b/tools/testing/selftests/bpf/test_sock.c @@ -47,34 +47,6 @@ struct sock_test { }; static struct sock_test tests[] = { - { - .descr = "sock_create load w/o expected_attach_type (compat mode)", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = 0, - .attach_type = BPF_CGROUP_INET_SOCK_CREATE, - .domain = AF_INET, - .type = SOCK_STREAM, - .ip = "127.0.0.1", - .port = 8097, - .result = SUCCESS, - }, - { - .descr = "sock_create load w/ expected_attach_type", - .insns = { - BPF_MOV64_IMM(BPF_REG_0, 1), - BPF_EXIT_INSN(), - }, - .expected_attach_type = BPF_CGROUP_INET_SOCK_CREATE, - .attach_type = BPF_CGROUP_INET_SOCK_CREATE, - .domain = AF_INET, - .type = SOCK_STREAM, - .ip = "127.0.0.1", - .port = 8097, - .result = SUCCESS, - }, }; static size_t probe_prog_length(const struct bpf_insn *fp) -- cgit v1.2.3 From eea6c14c10ce208e5f6ab309fb1c141a39446a1b Mon Sep 17 00:00:00 2001 From: Jordan Rife Date: Tue, 22 Oct 2024 15:29:04 +0000 Subject: selftests/bpf: Retire test_sock.c Completely remove test_sock.c and associated config. Signed-off-by: Jordan Rife Link: https://lore.kernel.org/r/20241022152913.574836-5-jrife@google.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/.gitignore | 1 - tools/testing/selftests/bpf/Makefile | 3 +- tools/testing/selftests/bpf/test_sock.c | 231 -------------------------------- 3 files changed, 1 insertion(+), 234 deletions(-) delete mode 100644 tools/testing/selftests/bpf/test_sock.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore index e6533b3400de..d45c9a9b304d 100644 --- a/tools/testing/selftests/bpf/.gitignore +++ b/tools/testing/selftests/bpf/.gitignore @@ -16,7 +16,6 @@ fixdep /test_progs-cpuv4 test_verifier_log feature -test_sock urandom_read test_sockmap test_lirc_mode2_user diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 28a76baa854d..c4fc9a3291a8 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -84,7 +84,7 @@ endif # Order correspond to 'make run_tests' order TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ - test_sock test_sockmap \ + test_sockmap \ test_tcpnotify_user test_sysctl \ test_progs-no_alu32 TEST_INST_SUBDIRS := no_alu32 @@ -335,7 +335,6 @@ JSON_WRITER := $(OUTPUT)/json_writer.o CAP_HELPERS := $(OUTPUT)/cap_helpers.o NETWORK_HELPERS := $(OUTPUT)/network_helpers.o -$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) $(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c deleted file mode 100644 index f97850f1d84a..000000000000 --- a/tools/testing/selftests/bpf/test_sock.c +++ /dev/null @@ -1,231 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -// Copyright (c) 2018 Facebook - -#include -#include - -#include -#include -#include - -#include - -#include - -#include "cgroup_helpers.h" -#include -#include "bpf_util.h" - -#define CG_PATH "/foo" -#define MAX_INSNS 512 - -char bpf_log_buf[BPF_LOG_BUF_SIZE]; -static bool verbose = false; - -struct sock_test { - const char *descr; - /* BPF prog properties */ - struct bpf_insn insns[MAX_INSNS]; - enum bpf_attach_type expected_attach_type; - enum bpf_attach_type attach_type; - /* Socket properties */ - int domain; - int type; - /* Endpoint to bind() to */ - const char *ip; - unsigned short port; - unsigned short port_retry; - /* Expected test result */ - enum { - LOAD_REJECT, - ATTACH_REJECT, - BIND_REJECT, - SUCCESS, - RETRY_SUCCESS, - RETRY_REJECT - } result; -}; - -static struct sock_test tests[] = { -}; - -static size_t probe_prog_length(const struct bpf_insn *fp) -{ - size_t len; - - for (len = MAX_INSNS - 1; len > 0; --len) - if (fp[len].code != 0 || fp[len].imm != 0) - break; - return len + 1; -} - -static int load_sock_prog(const struct bpf_insn *prog, - enum bpf_attach_type attach_type) -{ - LIBBPF_OPTS(bpf_prog_load_opts, opts); - int ret, insn_cnt; - - insn_cnt = probe_prog_length(prog); - - opts.expected_attach_type = attach_type; - opts.log_buf = bpf_log_buf; - opts.log_size = BPF_LOG_BUF_SIZE; - opts.log_level = 2; - - ret = bpf_prog_load(BPF_PROG_TYPE_CGROUP_SOCK, NULL, "GPL", prog, insn_cnt, &opts); - if (verbose && ret < 0) - fprintf(stderr, "%s\n", bpf_log_buf); - - return ret; -} - -static int attach_sock_prog(int cgfd, int progfd, - enum bpf_attach_type attach_type) -{ - return bpf_prog_attach(progfd, cgfd, attach_type, BPF_F_ALLOW_OVERRIDE); -} - -static int bind_sock(int domain, int type, const char *ip, - unsigned short port, unsigned short port_retry) -{ - struct sockaddr_storage addr; - struct sockaddr_in6 *addr6; - struct sockaddr_in *addr4; - int sockfd = -1; - socklen_t len; - int res = SUCCESS; - - sockfd = socket(domain, type, 0); - if (sockfd < 0) - goto err; - - memset(&addr, 0, sizeof(addr)); - - if (domain == AF_INET) { - len = sizeof(struct sockaddr_in); - addr4 = (struct sockaddr_in *)&addr; - addr4->sin_family = domain; - addr4->sin_port = htons(port); - if (inet_pton(domain, ip, (void *)&addr4->sin_addr) != 1) - goto err; - } else if (domain == AF_INET6) { - len = sizeof(struct sockaddr_in6); - addr6 = (struct sockaddr_in6 *)&addr; - addr6->sin6_family = domain; - addr6->sin6_port = htons(port); - if (inet_pton(domain, ip, (void *)&addr6->sin6_addr) != 1) - goto err; - } else { - goto err; - } - - if (bind(sockfd, (const struct sockaddr *)&addr, len) == -1) { - /* sys_bind() may fail for different reasons, errno has to be - * checked to confirm that BPF program rejected it. - */ - if (errno != EPERM) - goto err; - if (port_retry) - goto retry; - res = BIND_REJECT; - goto out; - } - - goto out; -retry: - if (domain == AF_INET) - addr4->sin_port = htons(port_retry); - else - addr6->sin6_port = htons(port_retry); - if (bind(sockfd, (const struct sockaddr *)&addr, len) == -1) { - if (errno != EPERM) - goto err; - res = RETRY_REJECT; - } else { - res = RETRY_SUCCESS; - } - goto out; -err: - res = -1; -out: - close(sockfd); - return res; -} - -static int run_test_case(int cgfd, const struct sock_test *test) -{ - int progfd = -1; - int err = 0; - int res; - - printf("Test case: %s .. ", test->descr); - progfd = load_sock_prog(test->insns, test->expected_attach_type); - if (progfd < 0) { - if (test->result == LOAD_REJECT) - goto out; - else - goto err; - } - - if (attach_sock_prog(cgfd, progfd, test->attach_type) < 0) { - if (test->result == ATTACH_REJECT) - goto out; - else - goto err; - } - - res = bind_sock(test->domain, test->type, test->ip, test->port, - test->port_retry); - if (res > 0 && test->result == res) - goto out; - -err: - err = -1; -out: - /* Detaching w/o checking return code: best effort attempt. */ - if (progfd != -1) - bpf_prog_detach(cgfd, test->attach_type); - close(progfd); - printf("[%s]\n", err ? "FAIL" : "PASS"); - return err; -} - -static int run_tests(int cgfd) -{ - int passes = 0; - int fails = 0; - int i; - - for (i = 0; i < ARRAY_SIZE(tests); ++i) { - if (run_test_case(cgfd, &tests[i])) - ++fails; - else - ++passes; - } - printf("Summary: %d PASSED, %d FAILED\n", passes, fails); - return fails ? -1 : 0; -} - -int main(int argc, char **argv) -{ - int cgfd = -1; - int err = 0; - - cgfd = cgroup_setup_and_join(CG_PATH); - if (cgfd < 0) - goto err; - - /* Use libbpf 1.0 API mode */ - libbpf_set_strict_mode(LIBBPF_STRICT_ALL); - - if (run_tests(cgfd)) - goto err; - - goto out; -err: - err = -1; -out: - close(cgfd); - cleanup_cgroup_environment(); - return err; -} -- cgit v1.2.3 From dca93d29845dfed60910ba13dbfb6ae6a0e19f6d Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 23 Oct 2024 00:20:45 +0100 Subject: kselftest/arm64: Log fp-stress child startup errors to stdout Currently if we encounter an error between fork() and exec() of a child process we log the error to stderr. This means that the errors don't get annotated with the child information which makes diagnostics harder and means that if we miss the exit signal from the child we can deadlock waiting for output from the child. Improve robustness and output quality by logging to stdout instead. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241023-arm64-fp-stress-exec-fail-v1-1-ee3c62932c15@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/fp-stress.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/fp-stress.c b/tools/testing/selftests/arm64/fp/fp-stress.c index e62c9dbad501..13958e645afc 100644 --- a/tools/testing/selftests/arm64/fp/fp-stress.c +++ b/tools/testing/selftests/arm64/fp/fp-stress.c @@ -79,7 +79,7 @@ static void child_start(struct child_data *child, const char *program) */ ret = dup2(pipefd[1], 1); if (ret == -1) { - fprintf(stderr, "dup2() %d\n", errno); + printf("dup2() %d\n", errno); exit(EXIT_FAILURE); } @@ -89,7 +89,7 @@ static void child_start(struct child_data *child, const char *program) */ ret = dup2(startup_pipe[0], 3); if (ret == -1) { - fprintf(stderr, "dup2() %d\n", errno); + printf("dup2() %d\n", errno); exit(EXIT_FAILURE); } @@ -107,16 +107,15 @@ static void child_start(struct child_data *child, const char *program) */ ret = read(3, &i, sizeof(i)); if (ret < 0) - fprintf(stderr, "read(startp pipe) failed: %s (%d)\n", - strerror(errno), errno); + printf("read(startp pipe) failed: %s (%d)\n", + strerror(errno), errno); if (ret > 0) - fprintf(stderr, "%d bytes of data on startup pipe\n", - ret); + printf("%d bytes of data on startup pipe\n", ret); close(3); ret = execl(program, program, NULL); - fprintf(stderr, "execl(%s) failed: %d (%s)\n", - program, errno, strerror(errno)); + printf("execl(%s) failed: %d (%s)\n", + program, errno, strerror(errno)); exit(EXIT_FAILURE); } else { -- cgit v1.2.3 From 1f7c33630724dfe47f99748bd2a9a56ec8bd337f Mon Sep 17 00:00:00 2001 From: Mykyta Yatsenko Date: Wed, 23 Oct 2024 16:53:14 +0100 Subject: selftests/bpf: Increase verifier log limit in veristat The current default buffer size of 16MB allocated by veristat is no longer sufficient to hold the verifier logs of some production BPF programs. To address this issue, we need to increase the verifier log limit. Commit 7a9f5c65abcc ("bpf: increase verifier log limit") has already increased the supported buffer size by the kernel, but veristat users need to explicitly pass a log size argument to use the bigger log. This patch adds a function to detect the maximum verifier log size supported by the kernel and uses that by default in veristat. This ensures that veristat can handle larger verifier logs without requiring users to manually specify the log size. Signed-off-by: Mykyta Yatsenko Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241023155314.126255-1-mykyta.yatsenko5@gmail.com --- tools/testing/selftests/bpf/veristat.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/veristat.c b/tools/testing/selftests/bpf/veristat.c index c8efd44590d9..e12ef953fba8 100644 --- a/tools/testing/selftests/bpf/veristat.c +++ b/tools/testing/selftests/bpf/veristat.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -1109,6 +1110,35 @@ skip_freplace_fixup: return; } +static int max_verifier_log_size(void) +{ + const int SMALL_LOG_SIZE = UINT_MAX >> 8; + const int BIG_LOG_SIZE = UINT_MAX >> 2; + struct bpf_insn insns[] = { + { .code = BPF_ALU | BPF_MOV | BPF_X, .dst_reg = BPF_REG_0, }, + { .code = BPF_JMP | BPF_EXIT, }, + }; + LIBBPF_OPTS(bpf_prog_load_opts, opts, + .log_size = BIG_LOG_SIZE, + .log_buf = (void *)-1, + .log_level = 4 + ); + int ret, insn_cnt = ARRAY_SIZE(insns); + static int log_size; + + if (log_size != 0) + return log_size; + + ret = bpf_prog_load(BPF_PROG_TYPE_TRACEPOINT, NULL, "GPL", insns, insn_cnt, &opts); + + if (ret == -EFAULT) + log_size = BIG_LOG_SIZE; + else /* ret == -EINVAL, big log size is not supported by the verifier */ + log_size = SMALL_LOG_SIZE; + + return log_size; +} + static int process_prog(const char *filename, struct bpf_object *obj, struct bpf_program *prog) { const char *base_filename = basename(strdupa(filename)); @@ -1132,7 +1162,7 @@ static int process_prog(const char *filename, struct bpf_object *obj, struct bpf memset(stats, 0, sizeof(*stats)); if (env.verbose || env.top_src_lines > 0) { - buf_sz = env.log_size ? env.log_size : 16 * 1024 * 1024; + buf_sz = env.log_size ? env.log_size : max_verifier_log_size(); buf = malloc(buf_sz); if (!buf) return -ENOMEM; -- cgit v1.2.3 From da09a9e0c3eab164af950be44ee6bdea8527c3e5 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 18 Oct 2024 22:22:51 +0200 Subject: uprobe: Add data pointer to consumer handlers Adding data pointer to both entry and exit consumer handlers and all its users. The functionality itself is coming in following change. Signed-off-by: Jiri Olsa Signed-off-by: Peter Zijlstra (Intel) Acked-by: Oleg Nesterov Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241018202252.693462-2-jolsa@kernel.org --- tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c index 8835761d9a12..12005e3dc3e4 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c @@ -461,7 +461,7 @@ static struct bin_attribute bin_attr_bpf_testmod_file __ro_after_init = { static int uprobe_ret_handler(struct uprobe_consumer *self, unsigned long func, - struct pt_regs *regs) + struct pt_regs *regs, __u64 *data) { regs->ax = 0x12345678deadbeef; -- cgit v1.2.3 From 2a027d6bb66002c8e50e974676f932b33c5fce10 Mon Sep 17 00:00:00 2001 From: Joseph Jang Date: Sun, 20 Oct 2024 20:22:13 -0700 Subject: selftest: rtc: Add to check rtc alarm status for alarm related test In alarm_wkalm_set and alarm_wkalm_set_minute test, they use different ioctl (RTC_ALM_SET/RTC_WKALM_SET) for alarm feature detection. They will skip testing if RTC_ALM_SET/RTC_WKALM_SET ioctl returns an EINVAL error code. This design may miss detecting real problems when the efi.set_wakeup_time() return errors and then RTC_ALM_SET/RTC_WKALM_SET ioctl returns an EINVAL error code with RTC_FEATURE_ALARM enabled. In order to make rtctest more explicit and robust, we propose to use RTC_PARAM_GET ioctl interface to check rtc alarm feature state before running alarm related tests. If the kernel does not support RTC_PARAM_GET ioctl interface, we will fallback to check the error number of (RTC_ALM_SET/RTC_WKALM_SET) ioctl call for alarm feature detection. Requires commit 101ca8d05913b ("rtc: efi: Enable SET/GET WAKEUP services as optional") Reviewed-by: Koba Ko Reviewed-by: Matthew R. Ochs Signed-off-by: Joseph Jang Acked-by: Alexandre Belloni Signed-off-by: Shuah Khan --- tools/testing/selftests/rtc/Makefile | 2 +- tools/testing/selftests/rtc/rtctest.c | 64 +++++++++++++++++++++++++++++++++++ 2 files changed, 65 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/rtc/Makefile b/tools/testing/selftests/rtc/Makefile index 55198ecc04db..9dbb395c5c79 100644 --- a/tools/testing/selftests/rtc/Makefile +++ b/tools/testing/selftests/rtc/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -CFLAGS += -O3 -Wl,-no-as-needed -Wall +CFLAGS += -O3 -Wl,-no-as-needed -Wall -I$(top_srcdir)/usr/include LDLIBS += -lrt -lpthread -lm TEST_GEN_PROGS = rtctest diff --git a/tools/testing/selftests/rtc/rtctest.c b/tools/testing/selftests/rtc/rtctest.c index 38a8e67de77d..e103097d0b5b 100644 --- a/tools/testing/selftests/rtc/rtctest.c +++ b/tools/testing/selftests/rtc/rtctest.c @@ -25,6 +25,12 @@ static char *rtc_file = "/dev/rtc0"; +enum rtc_alarm_state { + RTC_ALARM_UNKNOWN, + RTC_ALARM_ENABLED, + RTC_ALARM_DISABLED, +}; + FIXTURE(rtc) { int fd; }; @@ -82,6 +88,24 @@ static void nanosleep_with_retries(long ns) } } +static enum rtc_alarm_state get_rtc_alarm_state(int fd) +{ + struct rtc_param param = { 0 }; + int rc; + + /* Validate kernel reflects unsupported RTC alarm state */ + param.param = RTC_PARAM_FEATURES; + param.index = 0; + rc = ioctl(fd, RTC_PARAM_GET, ¶m); + if (rc < 0) + return RTC_ALARM_UNKNOWN; + + if ((param.uvalue & _BITUL(RTC_FEATURE_ALARM)) == 0) + return RTC_ALARM_DISABLED; + + return RTC_ALARM_ENABLED; +} + TEST_F_TIMEOUT(rtc, date_read_loop, READ_LOOP_DURATION_SEC + 2) { int rc; long iter_count = 0; @@ -197,11 +221,16 @@ TEST_F(rtc, alarm_alm_set) { fd_set readfds; time_t secs, new; int rc; + enum rtc_alarm_state alarm_state = RTC_ALARM_UNKNOWN; if (self->fd == -1 && errno == ENOENT) SKIP(return, "Skipping test since %s does not exist", rtc_file); ASSERT_NE(-1, self->fd); + alarm_state = get_rtc_alarm_state(self->fd); + if (alarm_state == RTC_ALARM_DISABLED) + SKIP(return, "Skipping test since alarms are not supported."); + rc = ioctl(self->fd, RTC_RD_TIME, &tm); ASSERT_NE(-1, rc); @@ -210,6 +239,11 @@ TEST_F(rtc, alarm_alm_set) { rc = ioctl(self->fd, RTC_ALM_SET, &tm); if (rc == -1) { + /* + * Report error if rtc alarm was enabled. Fallback to check ioctl + * error number if rtc alarm state is unknown. + */ + ASSERT_EQ(RTC_ALARM_UNKNOWN, alarm_state); ASSERT_EQ(EINVAL, errno); TH_LOG("skip alarms are not supported."); return; @@ -255,11 +289,16 @@ TEST_F(rtc, alarm_wkalm_set) { fd_set readfds; time_t secs, new; int rc; + enum rtc_alarm_state alarm_state = RTC_ALARM_UNKNOWN; if (self->fd == -1 && errno == ENOENT) SKIP(return, "Skipping test since %s does not exist", rtc_file); ASSERT_NE(-1, self->fd); + alarm_state = get_rtc_alarm_state(self->fd); + if (alarm_state == RTC_ALARM_DISABLED) + SKIP(return, "Skipping test since alarms are not supported."); + rc = ioctl(self->fd, RTC_RD_TIME, &alarm.time); ASSERT_NE(-1, rc); @@ -270,6 +309,11 @@ TEST_F(rtc, alarm_wkalm_set) { rc = ioctl(self->fd, RTC_WKALM_SET, &alarm); if (rc == -1) { + /* + * Report error if rtc alarm was enabled. Fallback to check ioctl + * error number if rtc alarm state is unknown. + */ + ASSERT_EQ(RTC_ALARM_UNKNOWN, alarm_state); ASSERT_EQ(EINVAL, errno); TH_LOG("skip alarms are not supported."); return; @@ -307,11 +351,16 @@ TEST_F_TIMEOUT(rtc, alarm_alm_set_minute, 65) { fd_set readfds; time_t secs, new; int rc; + enum rtc_alarm_state alarm_state = RTC_ALARM_UNKNOWN; if (self->fd == -1 && errno == ENOENT) SKIP(return, "Skipping test since %s does not exist", rtc_file); ASSERT_NE(-1, self->fd); + alarm_state = get_rtc_alarm_state(self->fd); + if (alarm_state == RTC_ALARM_DISABLED) + SKIP(return, "Skipping test since alarms are not supported."); + rc = ioctl(self->fd, RTC_RD_TIME, &tm); ASSERT_NE(-1, rc); @@ -320,6 +369,11 @@ TEST_F_TIMEOUT(rtc, alarm_alm_set_minute, 65) { rc = ioctl(self->fd, RTC_ALM_SET, &tm); if (rc == -1) { + /* + * Report error if rtc alarm was enabled. Fallback to check ioctl + * error number if rtc alarm state is unknown. + */ + ASSERT_EQ(RTC_ALARM_UNKNOWN, alarm_state); ASSERT_EQ(EINVAL, errno); TH_LOG("skip alarms are not supported."); return; @@ -365,11 +419,16 @@ TEST_F_TIMEOUT(rtc, alarm_wkalm_set_minute, 65) { fd_set readfds; time_t secs, new; int rc; + enum rtc_alarm_state alarm_state = RTC_ALARM_UNKNOWN; if (self->fd == -1 && errno == ENOENT) SKIP(return, "Skipping test since %s does not exist", rtc_file); ASSERT_NE(-1, self->fd); + alarm_state = get_rtc_alarm_state(self->fd); + if (alarm_state == RTC_ALARM_DISABLED) + SKIP(return, "Skipping test since alarms are not supported."); + rc = ioctl(self->fd, RTC_RD_TIME, &alarm.time); ASSERT_NE(-1, rc); @@ -380,6 +439,11 @@ TEST_F_TIMEOUT(rtc, alarm_wkalm_set_minute, 65) { rc = ioctl(self->fd, RTC_WKALM_SET, &alarm); if (rc == -1) { + /* + * Report error if rtc alarm was enabled. Fallback to check ioctl + * error number if rtc alarm state is unknown. + */ + ASSERT_EQ(RTC_ALARM_UNKNOWN, alarm_state); ASSERT_EQ(EINVAL, errno); TH_LOG("skip alarms are not supported."); return; -- cgit v1.2.3 From 2c3d022abe6c3165109393b75a127b06c2c70063 Mon Sep 17 00:00:00 2001 From: Eder Zulian Date: Tue, 22 Oct 2024 19:23:27 +0200 Subject: resolve_btfids: Fix compiler warnings MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Initialize 'set' and 'set8' pointers to NULL in sets_patch to prevent possible compiler warnings which are issued for various optimization levels, but do not happen when compiling with current default compilation options. For example, when compiling resolve_btfids with $ make "HOSTCFLAGS=-O2 -Wall" -C tools/bpf/resolve_btfids/ clean all Clang version 17.0.6 and GCC 13.3.1 issue following -Wmaybe-uninitialized warnings for variables 'set8' and 'set': In function ‘sets_patch’, inlined from ‘symbols_patch’ at main.c:748:6, inlined from ‘main’ at main.c:823:6: main.c:163:9: warning: ‘set8’ may be used uninitialized [-Wmaybe-uninitialized] 163 | eprintf(1, verbose, pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:729:17: note: in expansion of macro ‘pr_debug’ 729 | pr_debug("sorting addr %5lu: cnt %6d [%s]\n", | ^~~~~~~~ main.c: In function ‘main’: main.c:682:37: note: ‘set8’ was declared here 682 | struct btf_id_set8 *set8; | ^~~~ In function ‘sets_patch’, inlined from ‘symbols_patch’ at main.c:748:6, inlined from ‘main’ at main.c:823:6: main.c:163:9: warning: ‘set’ may be used uninitialized [-Wmaybe-uninitialized] 163 | eprintf(1, verbose, pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:729:17: note: in expansion of macro ‘pr_debug’ 729 | pr_debug("sorting addr %5lu: cnt %6d [%s]\n", | ^~~~~~~~ main.c: In function ‘main’: main.c:683:36: note: ‘set’ was declared here 683 | struct btf_id_set *set; | ^~~ Signed-off-by: Eder Zulian Signed-off-by: Andrii Nakryiko Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20241022172329.3871958-2-ezulian@redhat.com --- tools/bpf/resolve_btfids/main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c index d54aaa0619df..bd9f960bce3d 100644 --- a/tools/bpf/resolve_btfids/main.c +++ b/tools/bpf/resolve_btfids/main.c @@ -679,8 +679,8 @@ static int sets_patch(struct object *obj) next = rb_first(&obj->sets); while (next) { - struct btf_id_set8 *set8; - struct btf_id_set *set; + struct btf_id_set8 *set8 = NULL; + struct btf_id_set *set = NULL; unsigned long addr, off; struct btf_id *id; -- cgit v1.2.3 From 7f4ec77f3fee41dd6a41f03a40703889e6e8f7b2 Mon Sep 17 00:00:00 2001 From: Eder Zulian Date: Tue, 22 Oct 2024 19:23:28 +0200 Subject: libbpf: Prevent compiler warnings/errors MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Initialize 'new_off' and 'pad_bits' to 0 and 'pad_type' to NULL in btf_dump_emit_bit_padding to prevent compiler warnings/errors which are observed when compiling with 'EXTRA_CFLAGS=-g -Og' options, but do not happen when compiling with current default options. For example, when compiling libbpf with $ make "EXTRA_CFLAGS=-g -Og" -C tools/lib/bpf/ clean all Clang version 17.0.6 and GCC 13.3.1 fail to compile btf_dump.c due to following errors: btf_dump.c: In function ‘btf_dump_emit_bit_padding’: btf_dump.c:903:42: error: ‘new_off’ may be used uninitialized [-Werror=maybe-uninitialized] 903 | if (new_off > cur_off && new_off <= next_off) { | ~~~~~~~~^~~~~~~~~~~ btf_dump.c:870:13: note: ‘new_off’ was declared here 870 | int new_off, pad_bits, bits, i; | ^~~~~~~ btf_dump.c:917:25: error: ‘pad_type’ may be used uninitialized [-Werror=maybe-uninitialized] 917 | btf_dump_printf(d, "\n%s%s: %d;", pfx(lvl), pad_type, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 918 | in_bitfield ? new_off - cur_off : 0); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ btf_dump.c:871:21: note: ‘pad_type’ was declared here 871 | const char *pad_type; | ^~~~~~~~ btf_dump.c:930:20: error: ‘pad_bits’ may be used uninitialized [-Werror=maybe-uninitialized] 930 | if (bits == pad_bits) { | ^ btf_dump.c:870:22: note: ‘pad_bits’ was declared here 870 | int new_off, pad_bits, bits, i; | ^~~~~~~~ cc1: all warnings being treated as errors Signed-off-by: Eder Zulian Signed-off-by: Andrii Nakryiko Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20241022172329.3871958-3-ezulian@redhat.com --- tools/lib/bpf/btf_dump.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c index 8440c2c5ad3e..468392f9882d 100644 --- a/tools/lib/bpf/btf_dump.c +++ b/tools/lib/bpf/btf_dump.c @@ -867,8 +867,8 @@ static void btf_dump_emit_bit_padding(const struct btf_dump *d, } pads[] = { {"long", d->ptr_sz * 8}, {"int", 32}, {"short", 16}, {"char", 8} }; - int new_off, pad_bits, bits, i; - const char *pad_type; + int new_off = 0, pad_bits = 0, bits, i; + const char *pad_type = NULL; if (cur_off >= next_off) return; /* no gap */ -- cgit v1.2.3 From 7a4ffec9fd54ea27395e24dff726dbf58e2fe06b Mon Sep 17 00:00:00 2001 From: Eder Zulian Date: Tue, 22 Oct 2024 19:23:29 +0200 Subject: libsubcmd: Silence compiler warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Initialize the pointer 'o' in options__order to NULL to prevent a compiler warning/error which is observed when compiling with the '-Og' option, but is not emitted by the compiler with the current default compilation options. For example, when compiling libsubcmd with $ make "EXTRA_CFLAGS=-Og" -C tools/lib/subcmd/ clean all Clang version 17.0.6 and GCC 13.3.1 fail to compile parse-options.c due to following error: parse-options.c: In function ‘options__order’: parse-options.c:832:9: error: ‘o’ may be used uninitialized [-Werror=maybe-uninitialized] 832 | memcpy(&ordered[nr_opts], o, sizeof(*o)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ parse-options.c:810:30: note: ‘o’ was declared here 810 | const struct option *o, *p = opts; | ^ cc1: all warnings being treated as errors Signed-off-by: Eder Zulian Signed-off-by: Andrii Nakryiko Acked-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20241022172329.3871958-4-ezulian@redhat.com --- tools/lib/subcmd/parse-options.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lib/subcmd/parse-options.c b/tools/lib/subcmd/parse-options.c index eb896d30545b..555d617c1f50 100644 --- a/tools/lib/subcmd/parse-options.c +++ b/tools/lib/subcmd/parse-options.c @@ -807,7 +807,7 @@ static int option__cmp(const void *va, const void *vb) static struct option *options__order(const struct option *opts) { int nr_opts = 0, nr_group = 0, nr_parent = 0, len; - const struct option *o, *p = opts; + const struct option *o = NULL, *p = opts; struct option *opt, *ordered = NULL, *group; /* flatten the options that have parents */ -- cgit v1.2.3 From b4e0e9a1e30059f4523c9b6a1f8045ad89b5db8a Mon Sep 17 00:00:00 2001 From: Li Huafei Date: Sat, 19 Oct 2024 23:41:55 +0800 Subject: perf disasm: Use disasm_line__free() to properly free disasm_line The structure disasm_line contains members that require dynamically allocated memory and need to be freed correctly using disasm_line__free(). This patch fixes the incorrect release in symbol__disassemble_capstone(). Fixes: 6d17edc113de ("perf annotate: Use libcapstone to disassemble") Signed-off-by: Li Huafei Tested-by: Athira Rajeev Cc: sesse@google.com Cc: kjain@linux.ibm.com Link: https://lore.kernel.org/r/20241019154157.282038-1-lihuafei1@huawei.com Signed-off-by: Namhyung Kim --- tools/perf/util/disasm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c index aef06a36bf40..053b1f9ccc71 100644 --- a/tools/perf/util/disasm.c +++ b/tools/perf/util/disasm.c @@ -1720,7 +1720,7 @@ err: */ list_for_each_entry_safe(dl, tmp, ¬es->src->source, al.node) { list_del(&dl->al.node); - free(dl); + disasm_line__free(dl); } } count = -1; -- cgit v1.2.3 From 908d50e50ef91713ae94bc8988db87def6b6fec3 Mon Sep 17 00:00:00 2001 From: Li Huafei Date: Sat, 19 Oct 2024 23:41:56 +0800 Subject: perf disasm: Use disasm_line__free() to properly free disasm_line symbol__disassemble_capstone_powerpc() goto the 'err' label when it failed in the loop that created disasm_line, and then used free() directly to free disasm_line. Since the structure disasm_line contains members that allocate memory dynamically, this can result in a memory leak. In fact, we can simply break the loop when it fails in the middle of the loop, and disasm_line__free() will then be called to properly free the created line. Other error paths do not need to consider freeing disasm_line. Fixes: c5d60de1813a ("perf annotate: Add support to use libcapstone in powerpc") Signed-off-by: Li Huafei Tested-by: Athira Rajeev Cc: sesse@google.com Cc: kjain@linux.ibm.com Link: https://lore.kernel.org/r/20241019154157.282038-2-lihuafei1@huawei.com Signed-off-by: Namhyung Kim --- tools/perf/util/disasm.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c index 053b1f9ccc71..5fdd5afc5c2f 100644 --- a/tools/perf/util/disasm.c +++ b/tools/perf/util/disasm.c @@ -1573,7 +1573,7 @@ static int symbol__disassemble_capstone_powerpc(char *filename, struct symbol *s dl = disasm_line__new(args); if (dl == NULL) - goto err; + break; annotation_line__add(&dl->al, ¬es->src->source); @@ -1603,18 +1603,6 @@ out: err: if (fd >= 0) close(fd); - if (needs_cs_close) { - struct disasm_line *tmp; - - /* - * It probably failed in the middle of the above loop. - * Release any resources it might add. - */ - list_for_each_entry_safe(dl, tmp, ¬es->src->source, al.node) { - list_del(&dl->al.node); - free(dl); - } - } count = -1; goto out; } -- cgit v1.2.3 From 150dab31d5609f896fbfaa06b442ca314da79858 Mon Sep 17 00:00:00 2001 From: Li Huafei Date: Sat, 19 Oct 2024 23:41:57 +0800 Subject: perf disasm: Fix not cleaning up disasm_line in symbol__disassemble_raw() In symbol__disassemble_raw(), the created disasm_line should be discarded before returning an error. When creating disasm_line fails, break the loop and then release the created lines. Fixes: 0b971e6bf1c3 ("perf annotate: Add support to capture and parse raw instruction in powerpc using dso__data_read_offset utility") Signed-off-by: Li Huafei Tested-by: Athira Rajeev Cc: sesse@google.com Cc: kjain@linux.ibm.com Link: https://lore.kernel.org/r/20241019154157.282038-3-lihuafei1@huawei.com Signed-off-by: Namhyung Kim --- tools/perf/util/disasm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c index 5fdd5afc5c2f..bd98fec903f7 100644 --- a/tools/perf/util/disasm.c +++ b/tools/perf/util/disasm.c @@ -1773,7 +1773,7 @@ static int symbol__disassemble_raw(char *filename, struct symbol *sym, sprintf(args->line, "%x", line[i]); dl = disasm_line__new(args); if (dl == NULL) - goto err; + break; annotation_line__add(&dl->al, ¬es->src->source); offset += 4; -- cgit v1.2.3 From 1b2bfc29695d273492c3dd8512775261f3272686 Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Tue, 22 Oct 2024 21:39:06 -0700 Subject: selftests/bpf: fix test_spin_lock_fail.c's global vars usage Global variables of special types (like `struct bpf_spin_lock`) make underlying ARRAY maps non-mmapable. To make this work with libbpf's mmaping logic, application is expected to declare such special variables as static, so libbpf doesn't even attempt to mmap() such ARRAYs. test_spin_lock_fail.c didn't follow this rule, but given it relied on this test to trigger failures, this went unnoticed, as we never got to the step of mmap()'ing these ARRAY maps. It is fragile and relies on specific sequence of libbpf steps, which are an internal implementation details. Fix the test by marking lockA and lockB as static. Fixes: c48748aea4f8 ("selftests/bpf: Add failure test cases for spin lock pairing") Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241023043908.3834423-2-andrii@kernel.org Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/progs/test_spin_lock_fail.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/test_spin_lock_fail.c b/tools/testing/selftests/bpf/progs/test_spin_lock_fail.c index 43f40c4fe241..1c8b678e2e9a 100644 --- a/tools/testing/selftests/bpf/progs/test_spin_lock_fail.c +++ b/tools/testing/selftests/bpf/progs/test_spin_lock_fail.c @@ -28,8 +28,8 @@ struct { }, }; -SEC(".data.A") struct bpf_spin_lock lockA; -SEC(".data.B") struct bpf_spin_lock lockB; +static struct bpf_spin_lock lockA SEC(".data.A"); +static struct bpf_spin_lock lockB SEC(".data.B"); SEC("?tc") int lock_id_kptr_preserve(void *ctx) -- cgit v1.2.3 From 137978f422516a128326df55c0ba23605f925e21 Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Tue, 22 Oct 2024 21:39:07 -0700 Subject: libbpf: move global data mmap()'ing into bpf_object__load() Since BPF skeleton inception libbpf has been doing mmap()'ing of global data ARRAY maps in bpf_object__load_skeleton() API, which is used by code generated .skel.h files (i.e., by BPF skeletons only). This is wrong because if BPF object is loaded through generic bpf_object__load() API, global data maps won't be re-mmap()'ed after load step, and memory pointers returned from bpf_map__initial_value() would be wrong and won't reflect the actual memory shared between BPF program and user space. bpf_map__initial_value() return result is rarely used after load, so this went unnoticed for a really long time, until bpftrace project attempted to load BPF object through generic bpf_object__load() API and then used BPF subskeleton instantiated from such bpf_object. It turned out that .data/.rodata/.bss data updates through such subskeleton was "blackholed", all because libbpf wouldn't re-mmap() those maps during bpf_object__load() phase. Long story short, this step should be done by libbpf regardless of BPF skeleton usage, right after BPF map is created in the kernel. This patch moves this functionality into bpf_object__populate_internal_map() to achieve this. And bpf_object__load_skeleton() is now simple and almost trivial, only propagating these mmap()'ed pointers into user-supplied skeleton structs. We also do trivial adjustments to error reporting inside bpf_object__populate_internal_map() for consistency with the rest of libbpf's map-handling code. Reported-by: Alastair Robertson Reported-by: Jonathan Wiepert Fixes: d66562fba1ce ("libbpf: Add BPF object skeleton support") Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241023043908.3834423-3-andrii@kernel.org Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/libbpf.c | 83 ++++++++++++++++++++++++-------------------------- 1 file changed, 40 insertions(+), 43 deletions(-) (limited to 'tools') diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 7c40286c3948..711173acbcef 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -5122,6 +5122,7 @@ bpf_object__populate_internal_map(struct bpf_object *obj, struct bpf_map *map) enum libbpf_map_type map_type = map->libbpf_type; char *cp, errmsg[STRERR_BUFSIZE]; int err, zero = 0; + size_t mmap_sz; if (obj->gen_loader) { bpf_gen__map_update_elem(obj->gen_loader, map - obj->maps, @@ -5135,8 +5136,8 @@ bpf_object__populate_internal_map(struct bpf_object *obj, struct bpf_map *map) if (err) { err = -errno; cp = libbpf_strerror_r(err, errmsg, sizeof(errmsg)); - pr_warn("Error setting initial map(%s) contents: %s\n", - map->name, cp); + pr_warn("map '%s': failed to set initial contents: %s\n", + bpf_map__name(map), cp); return err; } @@ -5146,11 +5147,43 @@ bpf_object__populate_internal_map(struct bpf_object *obj, struct bpf_map *map) if (err) { err = -errno; cp = libbpf_strerror_r(err, errmsg, sizeof(errmsg)); - pr_warn("Error freezing map(%s) as read-only: %s\n", - map->name, cp); + pr_warn("map '%s': failed to freeze as read-only: %s\n", + bpf_map__name(map), cp); return err; } } + + /* Remap anonymous mmap()-ed "map initialization image" as + * a BPF map-backed mmap()-ed memory, but preserving the same + * memory address. This will cause kernel to change process' + * page table to point to a different piece of kernel memory, + * but from userspace point of view memory address (and its + * contents, being identical at this point) will stay the + * same. This mapping will be released by bpf_object__close() + * as per normal clean up procedure. + */ + mmap_sz = bpf_map_mmap_sz(map); + if (map->def.map_flags & BPF_F_MMAPABLE) { + void *mmaped; + int prot; + + if (map->def.map_flags & BPF_F_RDONLY_PROG) + prot = PROT_READ; + else + prot = PROT_READ | PROT_WRITE; + mmaped = mmap(map->mmaped, mmap_sz, prot, MAP_SHARED | MAP_FIXED, map->fd, 0); + if (mmaped == MAP_FAILED) { + err = -errno; + pr_warn("map '%s': failed to re-mmap() contents: %d\n", + bpf_map__name(map), err); + return err; + } + map->mmaped = mmaped; + } else if (map->mmaped) { + munmap(map->mmaped, mmap_sz); + map->mmaped = NULL; + } + return 0; } @@ -5467,8 +5500,7 @@ retry: err = bpf_object__populate_internal_map(obj, map); if (err < 0) goto err_out; - } - if (map->def.type == BPF_MAP_TYPE_ARENA) { + } else if (map->def.type == BPF_MAP_TYPE_ARENA) { map->mmaped = mmap((void *)(long)map->map_extra, bpf_map_mmap_sz(map), PROT_READ | PROT_WRITE, map->map_extra ? MAP_SHARED | MAP_FIXED : MAP_SHARED, @@ -13916,46 +13948,11 @@ int bpf_object__load_skeleton(struct bpf_object_skeleton *s) for (i = 0; i < s->map_cnt; i++) { struct bpf_map_skeleton *map_skel = (void *)s->maps + i * s->map_skel_sz; struct bpf_map *map = *map_skel->map; - size_t mmap_sz = bpf_map_mmap_sz(map); - int prot, map_fd = map->fd; - void **mmaped = map_skel->mmaped; - - if (!mmaped) - continue; - - if (!(map->def.map_flags & BPF_F_MMAPABLE)) { - *mmaped = NULL; - continue; - } - if (map->def.type == BPF_MAP_TYPE_ARENA) { - *mmaped = map->mmaped; + if (!map_skel->mmaped) continue; - } - - if (map->def.map_flags & BPF_F_RDONLY_PROG) - prot = PROT_READ; - else - prot = PROT_READ | PROT_WRITE; - /* Remap anonymous mmap()-ed "map initialization image" as - * a BPF map-backed mmap()-ed memory, but preserving the same - * memory address. This will cause kernel to change process' - * page table to point to a different piece of kernel memory, - * but from userspace point of view memory address (and its - * contents, being identical at this point) will stay the - * same. This mapping will be released by bpf_object__close() - * as per normal clean up procedure, so we don't need to worry - * about it from skeleton's clean up perspective. - */ - *mmaped = mmap(map->mmaped, mmap_sz, prot, MAP_SHARED | MAP_FIXED, map_fd, 0); - if (*mmaped == MAP_FAILED) { - err = -errno; - *mmaped = NULL; - pr_warn("failed to re-mmap() map '%s': %d\n", - bpf_map__name(map), err); - return libbpf_err(err); - } + *map_skel->mmaped = map->mmaped; } return 0; -- cgit v1.2.3 From 80a54566b7f03351f77445ed3ac8d4eff3b04fcc Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Tue, 22 Oct 2024 21:39:08 -0700 Subject: selftests/bpf: validate generic bpf_object and subskel APIs work together Add a new subtest validating that bpf_object loaded and initialized through generic APIs is still interoperable with BPF subskeleton, including initialization and reading of global variables. Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241023043908.3834423-4-andrii@kernel.org Signed-off-by: Alexei Starovoitov --- .../testing/selftests/bpf/prog_tests/subskeleton.c | 76 +++++++++++++++++++++- 1 file changed, 75 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/subskeleton.c b/tools/testing/selftests/bpf/prog_tests/subskeleton.c index 9c31b7004f9c..fdf13ed0152a 100644 --- a/tools/testing/selftests/bpf/prog_tests/subskeleton.c +++ b/tools/testing/selftests/bpf/prog_tests/subskeleton.c @@ -46,7 +46,8 @@ static int subskeleton_lib_subresult(struct bpf_object *obj) return result; } -void test_subskeleton(void) +/* initialize and load through skeleton, then instantiate subskeleton out of it */ +static void subtest_skel_subskeleton(void) { int err, result; struct test_subskeleton *skel; @@ -76,3 +77,76 @@ void test_subskeleton(void) cleanup: test_subskeleton__destroy(skel); } + +/* initialize and load through generic bpf_object API, then instantiate subskeleton out of it */ +static void subtest_obj_subskeleton(void) +{ + int err, result; + const void *elf_bytes; + size_t elf_bytes_sz = 0, rodata_sz = 0, bss_sz = 0; + struct bpf_object *obj; + const struct bpf_map *map; + const struct bpf_program *prog; + struct bpf_link *link = NULL; + struct test_subskeleton__rodata *rodata; + struct test_subskeleton__bss *bss; + + elf_bytes = test_subskeleton__elf_bytes(&elf_bytes_sz); + if (!ASSERT_OK_PTR(elf_bytes, "elf_bytes")) + return; + + obj = bpf_object__open_mem(elf_bytes, elf_bytes_sz, NULL); + if (!ASSERT_OK_PTR(obj, "obj_open_mem")) + return; + + map = bpf_object__find_map_by_name(obj, ".rodata"); + if (!ASSERT_OK_PTR(map, "rodata_map_by_name")) + goto cleanup; + + rodata = bpf_map__initial_value(map, &rodata_sz); + if (!ASSERT_OK_PTR(rodata, "rodata_get")) + goto cleanup; + + rodata->rovar1 = 10; + rodata->var1 = 1; + subskeleton_lib_setup(obj); + + err = bpf_object__load(obj); + if (!ASSERT_OK(err, "obj_load")) + goto cleanup; + + prog = bpf_object__find_program_by_name(obj, "handler1"); + if (!ASSERT_OK_PTR(prog, "prog_by_name")) + goto cleanup; + + link = bpf_program__attach(prog); + if (!ASSERT_OK_PTR(link, "prog_attach")) + goto cleanup; + + /* trigger tracepoint */ + usleep(1); + + map = bpf_object__find_map_by_name(obj, ".bss"); + if (!ASSERT_OK_PTR(map, "bss_map_by_name")) + goto cleanup; + + bss = bpf_map__initial_value(map, &bss_sz); + if (!ASSERT_OK_PTR(rodata, "rodata_get")) + goto cleanup; + + result = subskeleton_lib_subresult(obj) * 10; + ASSERT_EQ(bss->out1, result, "out1"); + +cleanup: + bpf_link__destroy(link); + bpf_object__close(obj); +} + + +void test_subskeleton(void) +{ + if (test__start_subtest("skel_subskel")) + subtest_skel_subskeleton(); + if (test__start_subtest("obj_subskel")) + subtest_obj_subskeleton(); +} -- cgit v1.2.3 From 1bf70e6c3a5346966c25e0a1ff492945b25d3f80 Mon Sep 17 00:00:00 2001 From: Donald Hunter Date: Fri, 18 Oct 2024 10:32:28 +0100 Subject: tools/net/ynl: improve async notification handling The notification handling in ynl is currently very simple, using sleep() to wait a period of time and then handling all the buffered messages in a single batch. This patch changes the notification handling so that messages are processed as they are received. This makes it possible to use ynl as a library that supplies notifications in a timely manner. - Change check_ntf() to be a generator that yields 1 notification at a time and blocks until a notification is available. - Use the --sleep parameter to set an alarm and exit when it fires. This means that the CLI has the same interface, but notifications get printed as they are received: ./tools/net/ynl/cli.py --spec --subscribe [ --sleep ] Here is an example python snippet that shows how to use ynl as a library for receiving notifications: ynl = YnlFamily(f"{dir}/rt_route.yaml") ynl.ntf_subscribe('rtnlgrp-ipv4-route') for event in ynl.check_ntf(): handle(event) Signed-off-by: Donald Hunter Tested-by: Kory Maincent Link: https://patch.msgid.link/20241018093228.25477-1-donald.hunter@gmail.com Signed-off-by: Paolo Abeni --- tools/net/ynl/cli.py | 10 +++++++--- tools/net/ynl/lib/ynl.py | 49 ++++++++++++++++++++++++++++-------------------- 2 files changed, 36 insertions(+), 23 deletions(-) (limited to 'tools') diff --git a/tools/net/ynl/cli.py b/tools/net/ynl/cli.py index b8481f401376..9e95016b85b3 100755 --- a/tools/net/ynl/cli.py +++ b/tools/net/ynl/cli.py @@ -5,6 +5,7 @@ import argparse import json import pprint import time +import signal from lib import YnlFamily, Netlink, NlError @@ -17,6 +18,8 @@ class YnlEncoder(json.JSONEncoder): return list(obj) return json.JSONEncoder.default(self, obj) +def handle_timeout(sig, frame): + exit(0) def main(): description = """ @@ -81,7 +84,8 @@ def main(): ynl.ntf_subscribe(args.ntf) if args.sleep: - time.sleep(args.sleep) + signal.signal(signal.SIGALRM, handle_timeout) + signal.alarm(args.sleep) if args.list_ops: for op_name, op in ynl.ops.items(): @@ -106,8 +110,8 @@ def main(): exit(1) if args.ntf: - ynl.check_ntf() - output(ynl.async_msg_queue) + for msg in ynl.check_ntf(): + output(msg) if __name__ == "__main__": diff --git a/tools/net/ynl/lib/ynl.py b/tools/net/ynl/lib/ynl.py index c22c22bf2cb7..92f85698c50e 100644 --- a/tools/net/ynl/lib/ynl.py +++ b/tools/net/ynl/lib/ynl.py @@ -12,6 +12,8 @@ import sys import yaml import ipaddress import uuid +import queue +import time from .nlspec import SpecFamily @@ -489,7 +491,7 @@ class YnlFamily(SpecFamily): self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_GET_STRICT_CHK, 1) self.async_msg_ids = set() - self.async_msg_queue = [] + self.async_msg_queue = queue.Queue() for msg in self.msgs.values(): if msg.is_async: @@ -903,32 +905,39 @@ class YnlFamily(SpecFamily): msg['name'] = op['name'] msg['msg'] = attrs - self.async_msg_queue.append(msg) + self.async_msg_queue.put(msg) - def check_ntf(self): + def check_ntf(self, interval=0.1): while True: try: reply = self.sock.recv(self._recv_size, socket.MSG_DONTWAIT) - except BlockingIOError: - return + nms = NlMsgs(reply) + self._recv_dbg_print(reply, nms) + for nl_msg in nms: + if nl_msg.error: + print("Netlink error in ntf!?", os.strerror(-nl_msg.error)) + print(nl_msg) + continue + if nl_msg.done: + print("Netlink done while checking for ntf!?") + continue - nms = NlMsgs(reply) - self._recv_dbg_print(reply, nms) - for nl_msg in nms: - if nl_msg.error: - print("Netlink error in ntf!?", os.strerror(-nl_msg.error)) - print(nl_msg) - continue - if nl_msg.done: - print("Netlink done while checking for ntf!?") - continue + decoded = self.nlproto.decode(self, nl_msg, None) + if decoded.cmd() not in self.async_msg_ids: + print("Unexpected msg id while checking for ntf", decoded) + continue - decoded = self.nlproto.decode(self, nl_msg, None) - if decoded.cmd() not in self.async_msg_ids: - print("Unexpected msg id done while checking for ntf", decoded) - continue + self.handle_ntf(decoded) + except BlockingIOError: + pass - self.handle_ntf(decoded) + try: + yield self.async_msg_queue.get_nowait() + except queue.Empty: + try: + time.sleep(interval) + except KeyboardInterrupt: + return def operation_do_attributes(self, name): """ -- cgit v1.2.3 From cdda1f26e74bac732eca537a69f19f6a37b641be Mon Sep 17 00:00:00 2001 From: Luca Boccassi Date: Thu, 10 Oct 2024 16:52:32 +0100 Subject: pidfd: add ioctl to retrieve pid info A common pattern when using pid fds is having to get information about the process, which currently requires /proc being mounted, resolving the fd to a pid, and then do manual string parsing of /proc/N/status and friends. This needs to be reimplemented over and over in all userspace projects (e.g.: I have reimplemented resolving in systemd, dbus, dbus-daemon, polkit so far), and requires additional care in checking that the fd is still valid after having parsed the data, to avoid races. Having a programmatic API that can be used directly removes all these requirements, including having /proc mounted. As discussed at LPC24, add an ioctl with an extensible struct so that more parameters can be added later if needed. Start with returning pid/tgid/ppid and creds unconditionally, and cgroupid optionally. Signed-off-by: Luca Boccassi Link: https://lore.kernel.org/r/20241010155401.2268522-1-luca.boccassi@gmail.com Signed-off-by: Christian Brauner --- tools/testing/selftests/pidfd/pidfd_open_test.c | 82 ++++++++++++++++++++++++- 1 file changed, 81 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/pidfd/pidfd_open_test.c b/tools/testing/selftests/pidfd/pidfd_open_test.c index c62564c264b1..ce413a221bac 100644 --- a/tools/testing/selftests/pidfd/pidfd_open_test.c +++ b/tools/testing/selftests/pidfd/pidfd_open_test.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -21,6 +22,32 @@ #include "pidfd.h" #include "../kselftest.h" +#ifndef PIDFS_IOCTL_MAGIC +#define PIDFS_IOCTL_MAGIC 0xFF +#endif + +#ifndef PIDFD_GET_INFO +#define PIDFD_GET_INFO _IOWR(PIDFS_IOCTL_MAGIC, 11, struct pidfd_info) +#define PIDFD_INFO_CGROUPID (1UL << 0) + +struct pidfd_info { + __u64 request_mask; + __u64 cgroupid; + __u32 pid; + __u32 tgid; + __u32 ppid; + __u32 ruid; + __u32 rgid; + __u32 euid; + __u32 egid; + __u32 suid; + __u32 sgid; + __u32 fsuid; + __u32 fsgid; + __u32 spare0[1]; +}; +#endif + static int safe_int(const char *numstr, int *converted) { char *err = NULL; @@ -120,10 +147,13 @@ out: int main(int argc, char **argv) { + struct pidfd_info info = { + .request_mask = PIDFD_INFO_CGROUPID, + }; int pidfd = -1, ret = 1; pid_t pid; - ksft_set_plan(3); + ksft_set_plan(4); pidfd = sys_pidfd_open(-1, 0); if (pidfd >= 0) { @@ -153,6 +183,56 @@ int main(int argc, char **argv) pid = get_pid_from_fdinfo_file(pidfd, "Pid:", sizeof("Pid:") - 1); ksft_print_msg("pidfd %d refers to process with pid %d\n", pidfd, pid); + if (ioctl(pidfd, PIDFD_GET_INFO, &info) < 0) { + ksft_print_msg("%s - failed to get info from pidfd\n", strerror(errno)); + goto on_error; + } + if (info.pid != pid) { + ksft_print_msg("pid from fdinfo file %d does not match pid from ioctl %d\n", + pid, info.pid); + goto on_error; + } + if (info.ppid != getppid()) { + ksft_print_msg("ppid %d does not match ppid from ioctl %d\n", + pid, info.pid); + goto on_error; + } + if (info.ruid != getuid()) { + ksft_print_msg("uid %d does not match uid from ioctl %d\n", + getuid(), info.ruid); + goto on_error; + } + if (info.rgid != getgid()) { + ksft_print_msg("gid %d does not match gid from ioctl %d\n", + getgid(), info.rgid); + goto on_error; + } + if (info.euid != geteuid()) { + ksft_print_msg("euid %d does not match euid from ioctl %d\n", + geteuid(), info.euid); + goto on_error; + } + if (info.egid != getegid()) { + ksft_print_msg("egid %d does not match egid from ioctl %d\n", + getegid(), info.egid); + goto on_error; + } + if (info.suid != geteuid()) { + ksft_print_msg("suid %d does not match suid from ioctl %d\n", + geteuid(), info.suid); + goto on_error; + } + if (info.sgid != getegid()) { + ksft_print_msg("sgid %d does not match sgid from ioctl %d\n", + getegid(), info.sgid); + goto on_error; + } + if ((info.request_mask & PIDFD_INFO_CGROUPID) && info.cgroupid == 0) { + ksft_print_msg("cgroupid should not be 0 when PIDFD_INFO_CGROUPID is set\n"); + goto on_error; + } + ksft_test_result_pass("get info from pidfd test: passed\n"); + ret = 0; on_error: -- cgit v1.2.3 From 24b216b2d13568c703a76137ef54a2a9531a71d8 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Tue, 22 Oct 2024 17:51:43 +0200 Subject: tools/lib/thermal: Make more generic the command encoding function The thermal netlink has been extended with more commands which require an encoding with more information. The generic encoding function puts the thermal zone id with the command name. It is the unique parameters. The next changes will provide more parameters to the command. Set the scene for those new parameters by making the encoding function more generic. Signed-off-by: Daniel Lezcano Reviewed-by: Lukasz Luba Link: https://patch.msgid.link/20241022155147.463475-4-daniel.lezcano@linaro.org Signed-off-by: Rafael J. Wysocki --- tools/lib/thermal/commands.c | 41 ++++++++++++++++++++++++++++++++--------- 1 file changed, 32 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/lib/thermal/commands.c b/tools/lib/thermal/commands.c index 73d4d4e8d6ec..a9223df91dcf 100644 --- a/tools/lib/thermal/commands.c +++ b/tools/lib/thermal/commands.c @@ -261,8 +261,23 @@ static struct genl_ops thermal_cmd_ops = { .o_ncmds = ARRAY_SIZE(thermal_cmds), }; -static thermal_error_t thermal_genl_auto(struct thermal_handler *th, int id, int cmd, - int flags, void *arg) +struct cmd_param { + int tz_id; +}; + +typedef int (*cmd_cb_t)(struct nl_msg *, struct cmd_param *); + +static int thermal_genl_tz_id_encode(struct nl_msg *msg, struct cmd_param *p) +{ + if (p->tz_id >= 0 && nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id)) + return -1; + + return 0; +} + +static thermal_error_t thermal_genl_auto(struct thermal_handler *th, cmd_cb_t cmd_cb, + struct cmd_param *param, + int cmd, int flags, void *arg) { struct nl_msg *msg; void *hdr; @@ -276,7 +291,7 @@ static thermal_error_t thermal_genl_auto(struct thermal_handler *th, int id, int if (!hdr) return THERMAL_ERROR; - if (id >= 0 && nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_ID, id)) + if (cmd_cb && cmd_cb(msg, param)) return THERMAL_ERROR; if (nl_send_msg(th->sk_cmd, th->cb_cmd, msg, genl_handle_msg, arg)) @@ -289,30 +304,38 @@ static thermal_error_t thermal_genl_auto(struct thermal_handler *th, int id, int thermal_error_t thermal_cmd_get_tz(struct thermal_handler *th, struct thermal_zone **tz) { - return thermal_genl_auto(th, -1, THERMAL_GENL_CMD_TZ_GET_ID, + return thermal_genl_auto(th, NULL, NULL, THERMAL_GENL_CMD_TZ_GET_ID, NLM_F_DUMP | NLM_F_ACK, tz); } thermal_error_t thermal_cmd_get_cdev(struct thermal_handler *th, struct thermal_cdev **tc) { - return thermal_genl_auto(th, -1, THERMAL_GENL_CMD_CDEV_GET, + return thermal_genl_auto(th, NULL, NULL, THERMAL_GENL_CMD_CDEV_GET, NLM_F_DUMP | NLM_F_ACK, tc); } thermal_error_t thermal_cmd_get_trip(struct thermal_handler *th, struct thermal_zone *tz) { - return thermal_genl_auto(th, tz->id, THERMAL_GENL_CMD_TZ_GET_TRIP, - 0, tz); + struct cmd_param p = { .tz_id = tz->id }; + + return thermal_genl_auto(th, thermal_genl_tz_id_encode, &p, + THERMAL_GENL_CMD_TZ_GET_TRIP, 0, tz); } thermal_error_t thermal_cmd_get_governor(struct thermal_handler *th, struct thermal_zone *tz) { - return thermal_genl_auto(th, tz->id, THERMAL_GENL_CMD_TZ_GET_GOV, 0, tz); + struct cmd_param p = { .tz_id = tz->id }; + + return thermal_genl_auto(th, thermal_genl_tz_id_encode, &p, + THERMAL_GENL_CMD_TZ_GET_GOV, 0, tz); } thermal_error_t thermal_cmd_get_temp(struct thermal_handler *th, struct thermal_zone *tz) { - return thermal_genl_auto(th, tz->id, THERMAL_GENL_CMD_TZ_GET_TEMP, 0, tz); + struct cmd_param p = { .tz_id = tz->id }; + + return thermal_genl_auto(th, thermal_genl_tz_id_encode, &p, + THERMAL_GENL_CMD_TZ_GET_TEMP, 0, tz); } thermal_error_t thermal_cmd_exit(struct thermal_handler *th) -- cgit v1.2.3 From a26267248628760d02e7d03534afc59dae0c9b40 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Tue, 22 Oct 2024 17:51:44 +0200 Subject: tools/lib/thermal: Add the threshold netlink ABI The thermal framework supports the thresholds and allows the userspace to create, delete, flush, get the list of the thresholds as well as getting the list of the thresholds set for a specific thermal zone. Add the netlink abstraction in the thermal library to take full advantage of thresholds for the userspace program. Signed-off-by: Daniel Lezcano Reviewed-by: Lukasz Luba Link: https://patch.msgid.link/20241022155147.463475-5-daniel.lezcano@linaro.org Signed-off-by: Rafael J. Wysocki --- tools/lib/thermal/commands.c | 138 +++++++++++++++++++++++++++++++++++- tools/lib/thermal/events.c | 55 ++++++++++---- tools/lib/thermal/include/thermal.h | 40 +++++++++++ tools/lib/thermal/libthermal.map | 5 ++ tools/lib/thermal/thermal.c | 17 +++++ tools/thermal/lib/Makefile | 2 +- 6 files changed, 242 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/lib/thermal/commands.c b/tools/lib/thermal/commands.c index a9223df91dcf..bcf0f14d035a 100644 --- a/tools/lib/thermal/commands.c +++ b/tools/lib/thermal/commands.c @@ -5,6 +5,7 @@ #include #include #include +#include #include #include "thermal_nl.h" @@ -33,6 +34,11 @@ static struct nla_policy thermal_genl_policy[THERMAL_GENL_ATTR_MAX + 1] = { [THERMAL_GENL_ATTR_CDEV_CUR_STATE] = { .type = NLA_U32 }, [THERMAL_GENL_ATTR_CDEV_MAX_STATE] = { .type = NLA_U32 }, [THERMAL_GENL_ATTR_CDEV_NAME] = { .type = NLA_STRING }, + + /* Thresholds */ + [THERMAL_GENL_ATTR_THRESHOLD] = { .type = NLA_NESTED }, + [THERMAL_GENL_ATTR_THRESHOLD_TEMP] = { .type = NLA_U32 }, + [THERMAL_GENL_ATTR_THRESHOLD_DIRECTION] = { .type = NLA_U32 }, }; static int parse_tz_get(struct genl_info *info, struct thermal_zone **tz) @@ -182,6 +188,48 @@ static int parse_tz_get_gov(struct genl_info *info, struct thermal_zone *tz) return THERMAL_SUCCESS; } +static int parse_threshold_get(struct genl_info *info, struct thermal_zone *tz) +{ + struct nlattr *attr; + struct thermal_threshold *__tt = NULL; + size_t size = 0; + int rem; + + /* + * The size contains the size of the array and we want to + * access the last element, size - 1. + * + * The variable size is initialized to zero but it will be + * then incremented by the first if() statement. The message + * attributes are ordered, so the first if() statement will be + * always called before the second one. If it happens that is + * not the case, then it is a kernel bug. + */ + nla_for_each_nested(attr, info->attrs[THERMAL_GENL_ATTR_THRESHOLD], rem) { + + if (nla_type(attr) == THERMAL_GENL_ATTR_THRESHOLD_TEMP) { + + size++; + + __tt = realloc(__tt, sizeof(*__tt) * (size + 2)); + if (!__tt) + return THERMAL_ERROR; + + __tt[size - 1].temperature = nla_get_u32(attr); + } + + if (nla_type(attr) == THERMAL_GENL_ATTR_THRESHOLD_DIRECTION) + __tt[size - 1].direction = nla_get_u32(attr); + } + + if (__tt) + __tt[size].temperature = INT_MAX; + + tz->thresholds = __tt; + + return THERMAL_SUCCESS; +} + static int handle_netlink(struct nl_cache_ops *unused, struct genl_cmd *cmd, struct genl_info *info, void *arg) @@ -210,6 +258,10 @@ static int handle_netlink(struct nl_cache_ops *unused, ret = parse_tz_get_gov(info, arg); break; + case THERMAL_GENL_CMD_THRESHOLD_GET: + ret = parse_threshold_get(info, arg); + break; + default: return THERMAL_ERROR; } @@ -253,6 +305,34 @@ static struct genl_cmd thermal_cmds[] = { .c_maxattr = THERMAL_GENL_ATTR_MAX, .c_attr_policy = thermal_genl_policy, }, + { + .c_id = THERMAL_GENL_CMD_THRESHOLD_GET, + .c_name = (char *)"Get thresholds list", + .c_msg_parser = handle_netlink, + .c_maxattr = THERMAL_GENL_ATTR_MAX, + .c_attr_policy = thermal_genl_policy, + }, + { + .c_id = THERMAL_GENL_CMD_THRESHOLD_ADD, + .c_name = (char *)"Add a threshold", + .c_msg_parser = handle_netlink, + .c_maxattr = THERMAL_GENL_ATTR_MAX, + .c_attr_policy = thermal_genl_policy, + }, + { + .c_id = THERMAL_GENL_CMD_THRESHOLD_DELETE, + .c_name = (char *)"Delete a threshold", + .c_msg_parser = handle_netlink, + .c_maxattr = THERMAL_GENL_ATTR_MAX, + .c_attr_policy = thermal_genl_policy, + }, + { + .c_id = THERMAL_GENL_CMD_THRESHOLD_FLUSH, + .c_name = (char *)"Flush the thresholds", + .c_msg_parser = handle_netlink, + .c_maxattr = THERMAL_GENL_ATTR_MAX, + .c_attr_policy = thermal_genl_policy, + }, }; static struct genl_ops thermal_cmd_ops = { @@ -263,13 +343,29 @@ static struct genl_ops thermal_cmd_ops = { struct cmd_param { int tz_id; + int temp; + int direction; }; typedef int (*cmd_cb_t)(struct nl_msg *, struct cmd_param *); static int thermal_genl_tz_id_encode(struct nl_msg *msg, struct cmd_param *p) { - if (p->tz_id >= 0 && nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id)) + if (nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id)) + return -1; + + return 0; +} + +static int thermal_genl_threshold_encode(struct nl_msg *msg, struct cmd_param *p) +{ + if (thermal_genl_tz_id_encode(msg, p)) + return -1; + + if (nla_put_u32(msg, THERMAL_GENL_ATTR_THRESHOLD_TEMP, p->temp)) + return -1; + + if (nla_put_u32(msg, THERMAL_GENL_ATTR_THRESHOLD_DIRECTION, p->direction)) return -1; return 0; @@ -338,6 +434,46 @@ thermal_error_t thermal_cmd_get_temp(struct thermal_handler *th, struct thermal_ THERMAL_GENL_CMD_TZ_GET_TEMP, 0, tz); } +thermal_error_t thermal_cmd_threshold_get(struct thermal_handler *th, + struct thermal_zone *tz) +{ + struct cmd_param p = { .tz_id = tz->id }; + + return thermal_genl_auto(th, thermal_genl_tz_id_encode, &p, + THERMAL_GENL_CMD_THRESHOLD_GET, 0, tz); +} + +thermal_error_t thermal_cmd_threshold_add(struct thermal_handler *th, + struct thermal_zone *tz, + int temperature, + int direction) +{ + struct cmd_param p = { .tz_id = tz->id, .temp = temperature, .direction = direction }; + + return thermal_genl_auto(th, thermal_genl_threshold_encode, &p, + THERMAL_GENL_CMD_THRESHOLD_ADD, 0, tz); +} + +thermal_error_t thermal_cmd_threshold_delete(struct thermal_handler *th, + struct thermal_zone *tz, + int temperature, + int direction) +{ + struct cmd_param p = { .tz_id = tz->id, .temp = temperature, .direction = direction }; + + return thermal_genl_auto(th, thermal_genl_threshold_encode, &p, + THERMAL_GENL_CMD_THRESHOLD_DELETE, 0, tz); +} + +thermal_error_t thermal_cmd_threshold_flush(struct thermal_handler *th, + struct thermal_zone *tz) +{ + struct cmd_param p = { .tz_id = tz->id }; + + return thermal_genl_auto(th, thermal_genl_tz_id_encode, &p, + THERMAL_GENL_CMD_THRESHOLD_FLUSH, 0, tz); +} + thermal_error_t thermal_cmd_exit(struct thermal_handler *th) { if (genl_unregister_family(&thermal_cmd_ops)) diff --git a/tools/lib/thermal/events.c b/tools/lib/thermal/events.c index a7a55d1a0c4c..bd851c869029 100644 --- a/tools/lib/thermal/events.c +++ b/tools/lib/thermal/events.c @@ -94,6 +94,30 @@ static int handle_thermal_event(struct nl_msg *n, void *arg) case THERMAL_GENL_EVENT_TZ_GOV_CHANGE: return ops->gov_change(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), nla_get_string(attrs[THERMAL_GENL_ATTR_GOV_NAME]), arg); + + case THERMAL_GENL_EVENT_THRESHOLD_ADD: + return ops->threshold_add(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), + nla_get_u32(attrs[THERMAL_GENL_ATTR_THRESHOLD_TEMP]), + nla_get_u32(attrs[THERMAL_GENL_ATTR_THRESHOLD_DIRECTION]), arg); + + case THERMAL_GENL_EVENT_THRESHOLD_DELETE: + return ops->threshold_delete(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), + nla_get_u32(attrs[THERMAL_GENL_ATTR_THRESHOLD_TEMP]), + nla_get_u32(attrs[THERMAL_GENL_ATTR_THRESHOLD_DIRECTION]), arg); + + case THERMAL_GENL_EVENT_THRESHOLD_FLUSH: + return ops->threshold_flush(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), arg); + + case THERMAL_GENL_EVENT_THRESHOLD_UP: + return ops->threshold_up(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), + nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TEMP]), + nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_PREV_TEMP]), arg); + + case THERMAL_GENL_EVENT_THRESHOLD_DOWN: + return ops->threshold_down(nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_ID]), + nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_TEMP]), + nla_get_u32(attrs[THERMAL_GENL_ATTR_TZ_PREV_TEMP]), arg); + default: return -1; } @@ -101,19 +125,24 @@ static int handle_thermal_event(struct nl_msg *n, void *arg) static void thermal_events_ops_init(struct thermal_events_ops *ops) { - enabled_ops[THERMAL_GENL_EVENT_TZ_CREATE] = !!ops->tz_create; - enabled_ops[THERMAL_GENL_EVENT_TZ_DELETE] = !!ops->tz_delete; - enabled_ops[THERMAL_GENL_EVENT_TZ_DISABLE] = !!ops->tz_disable; - enabled_ops[THERMAL_GENL_EVENT_TZ_ENABLE] = !!ops->tz_enable; - enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_UP] = !!ops->trip_high; - enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_DOWN] = !!ops->trip_low; - enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_CHANGE] = !!ops->trip_change; - enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_ADD] = !!ops->trip_add; - enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_DELETE] = !!ops->trip_delete; - enabled_ops[THERMAL_GENL_EVENT_CDEV_ADD] = !!ops->cdev_add; - enabled_ops[THERMAL_GENL_EVENT_CDEV_DELETE] = !!ops->cdev_delete; - enabled_ops[THERMAL_GENL_EVENT_CDEV_STATE_UPDATE] = !!ops->cdev_update; - enabled_ops[THERMAL_GENL_EVENT_TZ_GOV_CHANGE] = !!ops->gov_change; + enabled_ops[THERMAL_GENL_EVENT_TZ_CREATE] = !!ops->tz_create; + enabled_ops[THERMAL_GENL_EVENT_TZ_DELETE] = !!ops->tz_delete; + enabled_ops[THERMAL_GENL_EVENT_TZ_DISABLE] = !!ops->tz_disable; + enabled_ops[THERMAL_GENL_EVENT_TZ_ENABLE] = !!ops->tz_enable; + enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_UP] = !!ops->trip_high; + enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_DOWN] = !!ops->trip_low; + enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_CHANGE] = !!ops->trip_change; + enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_ADD] = !!ops->trip_add; + enabled_ops[THERMAL_GENL_EVENT_TZ_TRIP_DELETE] = !!ops->trip_delete; + enabled_ops[THERMAL_GENL_EVENT_CDEV_ADD] = !!ops->cdev_add; + enabled_ops[THERMAL_GENL_EVENT_CDEV_DELETE] = !!ops->cdev_delete; + enabled_ops[THERMAL_GENL_EVENT_CDEV_STATE_UPDATE] = !!ops->cdev_update; + enabled_ops[THERMAL_GENL_EVENT_TZ_GOV_CHANGE] = !!ops->gov_change; + enabled_ops[THERMAL_GENL_EVENT_THRESHOLD_ADD] = !!ops->threshold_add; + enabled_ops[THERMAL_GENL_EVENT_THRESHOLD_DELETE] = !!ops->threshold_delete; + enabled_ops[THERMAL_GENL_EVENT_THRESHOLD_FLUSH] = !!ops->threshold_flush; + enabled_ops[THERMAL_GENL_EVENT_THRESHOLD_UP] = !!ops->threshold_up; + enabled_ops[THERMAL_GENL_EVENT_THRESHOLD_DOWN] = !!ops->threshold_down; } thermal_error_t thermal_events_handle(struct thermal_handler *th, void *arg) diff --git a/tools/lib/thermal/include/thermal.h b/tools/lib/thermal/include/thermal.h index 1abc560602cf..818ecdfb46e5 100644 --- a/tools/lib/thermal/include/thermal.h +++ b/tools/lib/thermal/include/thermal.h @@ -4,11 +4,20 @@ #define __LIBTHERMAL_H #include +#include #ifndef LIBTHERMAL_API #define LIBTHERMAL_API __attribute__((visibility("default"))) #endif +#ifndef THERMAL_THRESHOLD_WAY_UP +#define THERMAL_THRESHOLD_WAY_UP 0x1 +#endif + +#ifndef THERMAL_THRESHOLD_WAY_DOWN +#define THERMAL_THRESHOLD_WAY_DOWN 0x2 +#endif + #ifdef __cplusplus extern "C" { #endif @@ -31,6 +40,11 @@ struct thermal_events_ops { int (*cdev_delete)(int cdev_id, void *arg); int (*cdev_update)(int cdev_id, int cur_state, void *arg); int (*gov_change)(int tz_id, const char *gov_name, void *arg); + int (*threshold_add)(int tz_id, int temperature, int direction, void *arg); + int (*threshold_delete)(int tz_id, int temperature, int direction, void *arg); + int (*threshold_flush)(int tz_id, void *arg); + int (*threshold_up)(int tz_id, int temp, int prev_temp, void *arg); + int (*threshold_down)(int tz_id, int temp, int prev_temp, void *arg); }; struct thermal_ops { @@ -45,12 +59,18 @@ struct thermal_trip { int hyst; }; +struct thermal_threshold { + int temperature; + int direction; +}; + struct thermal_zone { int id; int temp; char name[THERMAL_NAME_LENGTH]; char governor[THERMAL_NAME_LENGTH]; struct thermal_trip *trip; + struct thermal_threshold *thresholds; }; struct thermal_cdev { @@ -74,12 +94,16 @@ typedef int (*cb_tt_t)(struct thermal_trip *, void *); typedef int (*cb_tc_t)(struct thermal_cdev *, void *); +typedef int (*cb_th_t)(struct thermal_threshold *, void *); + LIBTHERMAL_API int for_each_thermal_zone(struct thermal_zone *tz, cb_tz_t cb, void *arg); LIBTHERMAL_API int for_each_thermal_trip(struct thermal_trip *tt, cb_tt_t cb, void *arg); LIBTHERMAL_API int for_each_thermal_cdev(struct thermal_cdev *cdev, cb_tc_t cb, void *arg); +LIBTHERMAL_API int for_each_thermal_threshold(struct thermal_threshold *th, cb_th_t cb, void *arg); + LIBTHERMAL_API struct thermal_zone *thermal_zone_find_by_name(struct thermal_zone *tz, const char *name); @@ -124,6 +148,22 @@ LIBTHERMAL_API thermal_error_t thermal_cmd_get_governor(struct thermal_handler * LIBTHERMAL_API thermal_error_t thermal_cmd_get_temp(struct thermal_handler *th, struct thermal_zone *tz); +LIBTHERMAL_API thermal_error_t thermal_cmd_threshold_get(struct thermal_handler *th, + struct thermal_zone *tz); + +LIBTHERMAL_API thermal_error_t thermal_cmd_threshold_add(struct thermal_handler *th, + struct thermal_zone *tz, + int temperature, + int direction); + +LIBTHERMAL_API thermal_error_t thermal_cmd_threshold_delete(struct thermal_handler *th, + struct thermal_zone *tz, + int temperature, + int direction); + +LIBTHERMAL_API thermal_error_t thermal_cmd_threshold_flush(struct thermal_handler *th, + struct thermal_zone *tz); + /* * Netlink thermal samples */ diff --git a/tools/lib/thermal/libthermal.map b/tools/lib/thermal/libthermal.map index d5e77738c7a4..d657176aa47f 100644 --- a/tools/lib/thermal/libthermal.map +++ b/tools/lib/thermal/libthermal.map @@ -4,6 +4,7 @@ LIBTHERMAL_0.0.1 { for_each_thermal_zone; for_each_thermal_trip; for_each_thermal_cdev; + for_each_thermal_threshold; thermal_zone_find_by_name; thermal_zone_find_by_id; thermal_zone_discover; @@ -17,6 +18,10 @@ LIBTHERMAL_0.0.1 { thermal_cmd_get_trip; thermal_cmd_get_governor; thermal_cmd_get_temp; + thermal_cmd_threshold_get; + thermal_cmd_threshold_add; + thermal_cmd_threshold_delete; + thermal_cmd_threshold_flush; thermal_sampling_init; thermal_sampling_handle; thermal_sampling_fd; diff --git a/tools/lib/thermal/thermal.c b/tools/lib/thermal/thermal.c index 72a76dc205bc..6f02e3539159 100644 --- a/tools/lib/thermal/thermal.c +++ b/tools/lib/thermal/thermal.c @@ -1,10 +1,24 @@ // SPDX-License-Identifier: LGPL-2.1+ // Copyright (C) 2022, Linaro Ltd - Daniel Lezcano #include +#include #include #include "thermal_nl.h" +int for_each_thermal_threshold(struct thermal_threshold *th, cb_th_t cb, void *arg) +{ + int i, ret = 0; + + if (!th) + return 0; + + for (i = 0; th[i].temperature != INT_MAX; i++) + ret |= cb(&th[i], arg); + + return ret; +} + int for_each_thermal_cdev(struct thermal_cdev *cdev, cb_tc_t cb, void *arg) { int i, ret = 0; @@ -80,6 +94,9 @@ static int __thermal_zone_discover(struct thermal_zone *tz, void *th) if (thermal_cmd_get_trip(th, tz) < 0) return -1; + if (thermal_cmd_threshold_get(th, tz)) + return -1; + if (thermal_cmd_get_governor(th, tz)) return -1; diff --git a/tools/thermal/lib/Makefile b/tools/thermal/lib/Makefile index 82db451935c5..f2552f73a64c 100644 --- a/tools/thermal/lib/Makefile +++ b/tools/thermal/lib/Makefile @@ -3,7 +3,7 @@ LIBTHERMAL_TOOLS_VERSION = 0 LIBTHERMAL_TOOLS_PATCHLEVEL = 0 -LIBTHERMAL_TOOLS_EXTRAVERSION = 1 +LIBTHERMAL_TOOLS_EXTRAVERSION = 2 MAKEFLAGS += --no-print-directory -- cgit v1.2.3 From 41b89dba7c5dd0a071c52aa2f8c87c507e30dfbe Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Tue, 22 Oct 2024 17:51:45 +0200 Subject: tools/thermal/thermal-engine: Take into account the thresholds API Enhance the thermal-engine skeleton with the thresholds added in the kernel and use the API exported by the thermal library. Signed-off-by: Daniel Lezcano Reviewed-by: Lukasz Luba Link: https://patch.msgid.link/20241022155147.463475-6-daniel.lezcano@linaro.org Signed-off-by: Rafael J. Wysocki --- tools/thermal/thermal-engine/thermal-engine.c | 105 ++++++++++++++++++++++---- 1 file changed, 92 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/thermal/thermal-engine/thermal-engine.c b/tools/thermal/thermal-engine/thermal-engine.c index 9b1476a2680f..0764dc754771 100644 --- a/tools/thermal/thermal-engine/thermal-engine.c +++ b/tools/thermal/thermal-engine/thermal-engine.c @@ -38,6 +38,14 @@ struct thermal_data { struct thermal_handler *th; }; +static int show_threshold(struct thermal_threshold *th, __maybe_unused void *arg) +{ + INFO("threshold temp=%d, direction=%d\n", + th->temperature, th->direction); + + return 0; +} + static int show_trip(struct thermal_trip *tt, __maybe_unused void *arg) { INFO("trip id=%d, type=%d, temp=%d, hyst=%d\n", @@ -70,6 +78,8 @@ static int show_tz(struct thermal_zone *tz, __maybe_unused void *arg) for_each_thermal_trip(tz->trip, show_trip, NULL); + for_each_thermal_threshold(tz->thresholds, show_threshold, NULL); + show_temp(tz, arg); show_governor(tz, arg); @@ -77,6 +87,30 @@ static int show_tz(struct thermal_zone *tz, __maybe_unused void *arg) return 0; } +static int set_threshold(struct thermal_zone *tz, __maybe_unused void *arg) +{ + struct thermal_handler *th = arg; + int thresholds[] = { 43000, 65000, 49000, 55000, 57000 }; + size_t i; + + INFO("Setting threshold for thermal zone '%s', id=%d\n", tz->name, tz->id); + + if (thermal_cmd_threshold_flush(th, tz)) { + ERROR("Failed to flush all previous thresholds\n"); + return -1; + } + + for (i = 0; i < sizeof(thresholds) / sizeof(thresholds[0]); i++) + if (thermal_cmd_threshold_add(th, tz, thresholds[i], + THERMAL_THRESHOLD_WAY_UP | + THERMAL_THRESHOLD_WAY_DOWN)) { + ERROR("Failed to set threshold\n"); + return -1; + } + + return 0; +} + static int tz_create(const char *name, int tz_id, __maybe_unused void *arg) { INFO("Thermal zone '%s'/%d created\n", name, tz_id); @@ -197,20 +231,62 @@ static int gov_change(int tz_id, const char *name, __maybe_unused void *arg) return 0; } +static int threshold_add(int tz_id, int temp, int direction, __maybe_unused void *arg) +{ + INFO("Threshold added tz_id=%d: temp=%d, direction=%d\n", tz_id, temp, direction); + + return 0; +} + +static int threshold_delete(int tz_id, int temp, int direction, __maybe_unused void *arg) +{ + INFO("Threshold deleted tz_id=%d: temp=%d, direction=%d\n", tz_id, temp, direction); + + return 0; +} + +static int threshold_flush(int tz_id, __maybe_unused void *arg) +{ + INFO("Thresholds flushed tz_id=%d\n", tz_id); + + return 0; +} + +static int threshold_up(int tz_id, int temp, int prev_temp, __maybe_unused void *arg) +{ + INFO("Threshold crossed way up tz_id=%d: temp=%d, prev_temp=%d\n", + tz_id, temp, prev_temp); + + return 0; +} + +static int threshold_down(int tz_id, int temp, int prev_temp, __maybe_unused void *arg) +{ + INFO("Threshold crossed way down tz_id=%d: temp=%d, prev_temp=%d\n", + tz_id, temp, prev_temp); + + return 0; +} + static struct thermal_ops ops = { - .events.tz_create = tz_create, - .events.tz_delete = tz_delete, - .events.tz_disable = tz_disable, - .events.tz_enable = tz_enable, - .events.trip_high = trip_high, - .events.trip_low = trip_low, - .events.trip_add = trip_add, - .events.trip_delete = trip_delete, - .events.trip_change = trip_change, - .events.cdev_add = cdev_add, - .events.cdev_delete = cdev_delete, - .events.cdev_update = cdev_update, - .events.gov_change = gov_change + .events.tz_create = tz_create, + .events.tz_delete = tz_delete, + .events.tz_disable = tz_disable, + .events.tz_enable = tz_enable, + .events.trip_high = trip_high, + .events.trip_low = trip_low, + .events.trip_add = trip_add, + .events.trip_delete = trip_delete, + .events.trip_change = trip_change, + .events.cdev_add = cdev_add, + .events.cdev_delete = cdev_delete, + .events.cdev_update = cdev_update, + .events.gov_change = gov_change, + .events.threshold_add = threshold_add, + .events.threshold_delete = threshold_delete, + .events.threshold_flush = threshold_flush, + .events.threshold_up = threshold_up, + .events.threshold_down = threshold_down, }; static int thermal_event(__maybe_unused int fd, __maybe_unused void *arg) @@ -280,6 +356,7 @@ enum { THERMAL_ENGINE_DAEMON_ERROR, THERMAL_ENGINE_LOG_ERROR, THERMAL_ENGINE_THERMAL_ERROR, + THERMAL_ENGINE_THRESHOLD_ERROR, THERMAL_ENGINE_MAINLOOP_ERROR, }; @@ -318,6 +395,8 @@ int main(int argc, char *argv[]) return THERMAL_ENGINE_THERMAL_ERROR; } + for_each_thermal_zone(td.tz, set_threshold, td.th); + for_each_thermal_zone(td.tz, show_tz, td.th); if (mainloop_init()) { -- cgit v1.2.3 From 7569406e95f2353070d88ebc88e8c13698542317 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Thu, 24 Oct 2024 12:59:38 +0200 Subject: thermal/lib: Fix memory leak on error in thermal_genl_auto() The function thermal_genl_auto() does not free the allocated message in the error path. Fix that by putting a out label and jump to it which will free the message instead of directly returning an error. Fixes: 47c4b0de080a ("tools/lib/thermal: Add a thermal library") Reported-by: Lukasz Luba  Signed-off-by: Daniel Lezcano Reviewed-by: Lukasz Luba Link: https://patch.msgid.link/20241024105938.1095358-1-daniel.lezcano@linaro.org [ rjw: Fixed up the !msg error path, added Fixes tag ] Signed-off-by: Rafael J. Wysocki --- tools/lib/thermal/commands.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/lib/thermal/commands.c b/tools/lib/thermal/commands.c index bcf0f14d035a..4998cec793ed 100644 --- a/tools/lib/thermal/commands.c +++ b/tools/lib/thermal/commands.c @@ -375,6 +375,7 @@ static thermal_error_t thermal_genl_auto(struct thermal_handler *th, cmd_cb_t cm struct cmd_param *param, int cmd, int flags, void *arg) { + thermal_error_t ret = THERMAL_ERROR; struct nl_msg *msg; void *hdr; @@ -385,17 +386,19 @@ static thermal_error_t thermal_genl_auto(struct thermal_handler *th, cmd_cb_t cm hdr = genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, thermal_cmd_ops.o_id, 0, flags, cmd, THERMAL_GENL_VERSION); if (!hdr) - return THERMAL_ERROR; + goto out; if (cmd_cb && cmd_cb(msg, param)) - return THERMAL_ERROR; + goto out; if (nl_send_msg(th->sk_cmd, th->cb_cmd, msg, genl_handle_msg, arg)) - return THERMAL_ERROR; + goto out; + ret = THERMAL_SUCCESS; +out: nlmsg_free(msg); - return THERMAL_SUCCESS; + return ret; } thermal_error_t thermal_cmd_get_tz(struct thermal_handler *th, struct thermal_zone **tz) -- cgit v1.2.3 From 81bc949f640f78b507c7523de7c750bcc87c1bb8 Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Fri, 18 Oct 2024 12:55:58 +0200 Subject: selftests: tls: add a selftest for wrapping rec_seq Set the initial rec_seq to 0xffffffffffffffff so that it wraps immediately. The send() call should fail with EBADMSG. A bug in this code was fixed in commit cfaa80c91f6f ("net/tls: do not free tls_rec on async operation in bpf_exec_tx_verdict()"). Signed-off-by: Sabrina Dubroca Reviewed-by: Simon Horman Link: https://patch.msgid.link/20775fcfd0371422921ee60a42de170c0398ac10.1729244987.git.sd@queasysnail.net Signed-off-by: Paolo Abeni --- tools/testing/selftests/net/tls.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/net/tls.c b/tools/testing/selftests/net/tls.c index f27a12d2a2c9..1a706d03bb6b 100644 --- a/tools/testing/selftests/net/tls.c +++ b/tools/testing/selftests/net/tls.c @@ -266,6 +266,25 @@ TEST_F(tls_basic, bad_cipher) EXPECT_EQ(setsockopt(self->fd, SOL_TLS, TLS_TX, &tls12, sizeof(struct tls12_crypto_info_aes_gcm_128)), -1); } +TEST_F(tls_basic, recseq_wrap) +{ + struct tls_crypto_info_keys tls12; + char const *test_str = "test_read"; + int send_len = 10; + + if (self->notls) + SKIP(return, "no TLS support"); + + tls_crypto_info_init(TLS_1_2_VERSION, TLS_CIPHER_AES_GCM_128, &tls12); + memset(&tls12.aes128.rec_seq, 0xff, sizeof(tls12.aes128.rec_seq)); + + ASSERT_EQ(setsockopt(self->fd, SOL_TLS, TLS_TX, &tls12, tls12.len), 0); + ASSERT_EQ(setsockopt(self->cfd, SOL_TLS, TLS_RX, &tls12, tls12.len), 0); + + EXPECT_EQ(send(self->fd, test_str, send_len, 0), -1); + EXPECT_EQ(errno, EBADMSG); +} + FIXTURE(tls) { int fd, cfd; -- cgit v1.2.3 From 84b4a51fce4ccc6605113ed8af41a3d91609a756 Mon Sep 17 00:00:00 2001 From: Luis Chamberlain Date: Mon, 21 Oct 2024 12:11:44 -0700 Subject: selftests: add new kallsyms selftests We lack find_symbol() selftests, so add one. This let's us stress test improvements easily on find_symbol() or optimizations. It also inherently allows us to test the limits of kallsyms on Linux today. We test a pathalogical use case for kallsyms by introducing modules which are automatically written for us with a larger number of symbols. We have 4 kallsyms test modules: A: has KALLSYSMS_NUMSYMS exported symbols B: uses one of A's symbols C: adds KALLSYMS_SCALE_FACTOR * KALLSYSMS_NUMSYMS exported D: adds 2 * the symbols than C By using anything much larger than KALLSYSMS_NUMSYMS as 10,000 and KALLSYMS_SCALE_FACTOR of 8 we segfault today. So we're capped at around 160000 symbols somehow today. We can inpsect that issue at our leasure later, but for now the real value to this test is that this will easily allow us to test improvements on find_symbol(). We want to enable this test on allyesmodconfig builds so we can't use this combination, so instead just use a safe value for now and be informative on the Kconfig symbol documentation about where our thresholds are for testers. We default then to KALLSYSMS_NUMSYMS of just 100 and KALLSYMS_SCALE_FACTOR of 8. On x86_64 we can use perf, for other architectures we just use 'time' and allow for customizations. For example a future enhancements could be done for parisc to check for unaligned accesses which triggers a special special exception handler assembler code inside the kernel. The negative impact on performance is so large on parisc that it keeps track of its accesses on /proc/cpuinfo as UAH: IRQ: CPU0 CPU1 3: 1332 0 SuperIO ttyS0 7: 1270013 0 SuperIO pata_ns87415 64: 320023012 320021431 CPU timer 65: 17080507 20624423 CPU IPI UAH: 10948640 58104 Unaligned access handler traps While at it, this tidies up lib/ test modules to allow us to have a new directory for them. The amount of test modules under lib/ is insane. This should also hopefully showcase how to start doing basic self module writing code, which may be more useful for more complex cases later in the future. Signed-off-by: Luis Chamberlain --- tools/testing/selftests/module/Makefile | 12 ++++ tools/testing/selftests/module/config | 3 + tools/testing/selftests/module/find_symbol.sh | 81 +++++++++++++++++++++++++++ 3 files changed, 96 insertions(+) create mode 100644 tools/testing/selftests/module/Makefile create mode 100644 tools/testing/selftests/module/config create mode 100755 tools/testing/selftests/module/find_symbol.sh (limited to 'tools') diff --git a/tools/testing/selftests/module/Makefile b/tools/testing/selftests/module/Makefile new file mode 100644 index 000000000000..6132d7ddb08b --- /dev/null +++ b/tools/testing/selftests/module/Makefile @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0-only +# Makefile for module loading selftests + +# No binaries, but make sure arg-less "make" doesn't trigger "run_tests" +all: + +TEST_PROGS := find_symbol.sh + +include ../lib.mk + +# Nothing to clean up. +clean: diff --git a/tools/testing/selftests/module/config b/tools/testing/selftests/module/config new file mode 100644 index 000000000000..b0c206b1ad47 --- /dev/null +++ b/tools/testing/selftests/module/config @@ -0,0 +1,3 @@ +CONFIG_TEST_RUNTIME=y +CONFIG_TEST_RUNTIME_MODULE=y +CONFIG_TEST_KALLSYMS=m diff --git a/tools/testing/selftests/module/find_symbol.sh b/tools/testing/selftests/module/find_symbol.sh new file mode 100755 index 000000000000..140364d3c49f --- /dev/null +++ b/tools/testing/selftests/module/find_symbol.sh @@ -0,0 +1,81 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0-or-later OR copyleft-next-0.3.1 +# Copyright (C) 2023 Luis Chamberlain +# +# This is a stress test script for kallsyms through find_symbol() + +set -e + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +test_reqs() +{ + if ! which modprobe 2> /dev/null > /dev/null; then + echo "$0: You need modprobe installed" >&2 + exit $ksft_skip + fi + + if ! which kmod 2> /dev/null > /dev/null; then + echo "$0: You need kmod installed" >&2 + exit $ksft_skip + fi + + if ! which perf 2> /dev/null > /dev/null; then + echo "$0: You need perf installed" >&2 + exit $ksft_skip + fi + + uid=$(id -u) + if [ $uid -ne 0 ]; then + echo $msg must be run as root >&2 + exit $ksft_skip + fi +} + +load_mod() +{ + local STATS="-e duration_time" + STATS="$STATS -e user_time" + STATS="$STATS -e system_time" + STATS="$STATS -e page-faults" + local MOD=$1 + + local ARCH="$(uname -m)" + case "${ARCH}" in + x86_64) + perf stat $STATS $MODPROBE test_kallsyms_b + ;; + *) + time $MODPROBE test_kallsyms_b + exit 1 + ;; + esac +} + +remove_all() +{ + $MODPROBE -r test_kallsyms_b + for i in a b c d; do + $MODPROBE -r test_kallsyms_$i + done +} +test_reqs + +MODPROBE=$( Date: Wed, 23 Oct 2024 16:47:54 -0700 Subject: libbpf: define __uptr. Make __uptr available to BPF programs to enable them to define uptrs. Acked-by: Andrii Nakryiko Signed-off-by: Kui-Feng Lee Signed-off-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20241023234759.860539-8-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/bpf_helpers.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h index 80bc0242e8dc..686824b8b413 100644 --- a/tools/lib/bpf/bpf_helpers.h +++ b/tools/lib/bpf/bpf_helpers.h @@ -185,6 +185,7 @@ enum libbpf_tristate { #define __kptr_untrusted __attribute__((btf_type_tag("kptr_untrusted"))) #define __kptr __attribute__((btf_type_tag("kptr"))) #define __percpu_kptr __attribute__((btf_type_tag("percpu_kptr"))) +#define __uptr __attribute__((btf_type_tag("uptr"))) #if defined (__clang__) #define bpf_ksym_exists(sym) ({ \ -- cgit v1.2.3 From 4579b4a4279ec7df9499943f764da03ae837021c Mon Sep 17 00:00:00 2001 From: Kui-Feng Lee Date: Wed, 23 Oct 2024 16:47:55 -0700 Subject: selftests/bpf: Some basic __uptr tests Make sure the memory of uptrs have been mapped to the kernel properly. Also ensure the values of uptrs in the kernel haven't been copied to userspace. It also has the syscall update_elem/delete_elem test to test the pin/unpin code paths. Signed-off-by: Kui-Feng Lee Signed-off-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20241023234759.860539-9-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/prog_tests/task_local_storage.c | 142 +++++++++++++++++++++ tools/testing/selftests/bpf/progs/task_ls_uptr.c | 63 +++++++++ tools/testing/selftests/bpf/uptr_test_common.h | 35 +++++ 3 files changed, 240 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/task_ls_uptr.c create mode 100644 tools/testing/selftests/bpf/uptr_test_common.h (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c index c33c05161a9e..4c8eadd1f083 100644 --- a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c +++ b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c @@ -7,12 +7,15 @@ #include #include /* For SYS_xxx definitions */ #include +#include #include #include "task_local_storage_helpers.h" #include "task_local_storage.skel.h" #include "task_local_storage_exit_creds.skel.h" #include "task_ls_recursion.skel.h" #include "task_storage_nodeadlock.skel.h" +#include "uptr_test_common.h" +#include "task_ls_uptr.skel.h" static void test_sys_enter_exit(void) { @@ -227,6 +230,143 @@ done: sched_setaffinity(getpid(), sizeof(old), &old); } +static struct user_data udata __attribute__((aligned(16))) = { + .a = 1, + .b = 2, +}; + +static struct user_data udata2 __attribute__((aligned(16))) = { + .a = 3, + .b = 4, +}; + +static void check_udata2(int expected) +{ + udata2.result = udata2.nested_result = 0; + usleep(1); + ASSERT_EQ(udata2.result, expected, "udata2.result"); + ASSERT_EQ(udata2.nested_result, expected, "udata2.nested_result"); +} + +static void test_uptr_basic(void) +{ + int map_fd, parent_task_fd, ev_fd; + struct value_type value = {}; + struct task_ls_uptr *skel; + pid_t child_pid, my_tid; + __u64 ev_dummy_data = 1; + int err; + + my_tid = syscall(SYS_gettid); + parent_task_fd = sys_pidfd_open(my_tid, 0); + if (!ASSERT_OK_FD(parent_task_fd, "parent_task_fd")) + return; + + ev_fd = eventfd(0, 0); + if (!ASSERT_OK_FD(ev_fd, "ev_fd")) { + close(parent_task_fd); + return; + } + + skel = task_ls_uptr__open_and_load(); + if (!ASSERT_OK_PTR(skel, "skel_open_and_load")) + goto out; + + map_fd = bpf_map__fd(skel->maps.datamap); + value.udata = &udata; + value.nested.udata = &udata; + err = bpf_map_update_elem(map_fd, &parent_task_fd, &value, BPF_NOEXIST); + if (!ASSERT_OK(err, "update_elem(udata)")) + goto out; + + err = task_ls_uptr__attach(skel); + if (!ASSERT_OK(err, "skel_attach")) + goto out; + + child_pid = fork(); + if (!ASSERT_NEQ(child_pid, -1, "fork")) + goto out; + + /* Call syscall in the child process, but access the map value of + * the parent process in the BPF program to check if the user kptr + * is translated/mapped correctly. + */ + if (child_pid == 0) { + /* child */ + + /* Overwrite the user_data in the child process to check if + * the BPF program accesses the user_data of the parent. + */ + udata.a = 0; + udata.b = 0; + + /* Wait for the parent to set child_pid */ + read(ev_fd, &ev_dummy_data, sizeof(ev_dummy_data)); + exit(0); + } + + skel->bss->parent_pid = my_tid; + skel->bss->target_pid = child_pid; + + write(ev_fd, &ev_dummy_data, sizeof(ev_dummy_data)); + + err = waitpid(child_pid, NULL, 0); + ASSERT_EQ(err, child_pid, "waitpid"); + ASSERT_EQ(udata.result, MAGIC_VALUE + udata.a + udata.b, "udata.result"); + ASSERT_EQ(udata.nested_result, MAGIC_VALUE + udata.a + udata.b, "udata.nested_result"); + + skel->bss->target_pid = my_tid; + + /* update_elem: uptr changes from udata1 to udata2 */ + value.udata = &udata2; + value.nested.udata = &udata2; + err = bpf_map_update_elem(map_fd, &parent_task_fd, &value, BPF_EXIST); + if (!ASSERT_OK(err, "update_elem(udata2)")) + goto out; + check_udata2(MAGIC_VALUE + udata2.a + udata2.b); + + /* update_elem: uptr changes from udata2 uptr to NULL */ + memset(&value, 0, sizeof(value)); + err = bpf_map_update_elem(map_fd, &parent_task_fd, &value, BPF_EXIST); + if (!ASSERT_OK(err, "update_elem(udata2)")) + goto out; + check_udata2(0); + + /* update_elem: uptr changes from NULL to udata2 */ + value.udata = &udata2; + value.nested.udata = &udata2; + err = bpf_map_update_elem(map_fd, &parent_task_fd, &value, BPF_EXIST); + if (!ASSERT_OK(err, "update_elem(udata2)")) + goto out; + check_udata2(MAGIC_VALUE + udata2.a + udata2.b); + + /* Check if user programs can access the value of user kptrs + * through bpf_map_lookup_elem(). Make sure the kernel value is not + * leaked. + */ + err = bpf_map_lookup_elem(map_fd, &parent_task_fd, &value); + if (!ASSERT_OK(err, "bpf_map_lookup_elem")) + goto out; + ASSERT_EQ(value.udata, NULL, "value.udata"); + ASSERT_EQ(value.nested.udata, NULL, "value.nested.udata"); + + /* delete_elem */ + err = bpf_map_delete_elem(map_fd, &parent_task_fd); + ASSERT_OK(err, "delete_elem(udata2)"); + check_udata2(0); + + /* update_elem: add uptr back to test map_free */ + value.udata = &udata2; + value.nested.udata = &udata2; + err = bpf_map_update_elem(map_fd, &parent_task_fd, &value, BPF_NOEXIST); + ASSERT_OK(err, "update_elem(udata2)"); + +out: + task_ls_uptr__destroy(skel); + close(ev_fd); + close(parent_task_fd); +} + void test_task_local_storage(void) { if (test__start_subtest("sys_enter_exit")) @@ -237,4 +377,6 @@ void test_task_local_storage(void) test_recursion(); if (test__start_subtest("nodeadlock")) test_nodeadlock(); + if (test__start_subtest("uptr_basic")) + test_uptr_basic(); } diff --git a/tools/testing/selftests/bpf/progs/task_ls_uptr.c b/tools/testing/selftests/bpf/progs/task_ls_uptr.c new file mode 100644 index 000000000000..ddbe11b46eef --- /dev/null +++ b/tools/testing/selftests/bpf/progs/task_ls_uptr.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ + +#include +#include +#include "uptr_test_common.h" + +struct task_struct *bpf_task_from_pid(s32 pid) __ksym; +void bpf_task_release(struct task_struct *p) __ksym; +void bpf_cgroup_release(struct cgroup *cgrp) __ksym; + +struct { + __uint(type, BPF_MAP_TYPE_TASK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, struct value_type); +} datamap SEC(".maps"); + +pid_t target_pid = 0; +pid_t parent_pid = 0; + +SEC("tp_btf/sys_enter") +int on_enter(__u64 *ctx) +{ + struct task_struct *task, *data_task; + struct value_type *ptr; + struct user_data *udata; + struct cgroup *cgrp; + + task = bpf_get_current_task_btf(); + if (task->pid != target_pid) + return 0; + + data_task = bpf_task_from_pid(parent_pid); + if (!data_task) + return 0; + + ptr = bpf_task_storage_get(&datamap, data_task, 0, 0); + bpf_task_release(data_task); + if (!ptr) + return 0; + + cgrp = bpf_kptr_xchg(&ptr->cgrp, NULL); + if (cgrp) { + int lvl = cgrp->level; + + bpf_cgroup_release(cgrp); + return lvl; + } + + udata = ptr->udata; + if (!udata || udata->result) + return 0; + udata->result = MAGIC_VALUE + udata->a + udata->b; + + udata = ptr->nested.udata; + if (udata && !udata->nested_result) + udata->nested_result = udata->result; + + return 0; +} + +char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/uptr_test_common.h b/tools/testing/selftests/bpf/uptr_test_common.h new file mode 100644 index 000000000000..feb41176888c --- /dev/null +++ b/tools/testing/selftests/bpf/uptr_test_common.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ + +#ifndef _UPTR_TEST_COMMON_H +#define _UPTR_TEST_COMMON_H + +#define MAGIC_VALUE 0xabcd1234 + +#ifdef __BPF__ +/* Avoid fwd btf type being generated for the following struct */ +struct user_data *dummy_data; +struct cgroup *dummy_cgrp; +#else +#define __uptr +#define __kptr +#endif + +struct user_data { + int a; + int b; + int result; + int nested_result; +}; + +struct nested_udata { + struct user_data __uptr *udata; +}; + +struct value_type { + struct user_data __uptr *udata; + struct cgroup __kptr *cgrp; + struct nested_udata nested; +}; + +#endif -- cgit v1.2.3 From 51fff4083372381e680724dde7ac3e859f9e3a0a Mon Sep 17 00:00:00 2001 From: Martin KaFai Lau Date: Wed, 23 Oct 2024 16:47:56 -0700 Subject: selftests/bpf: Test a uptr struct spanning across pages. This patch tests the case when uptr has a struct spanning across two pages. It is not supported now and EOPNOTSUPP is expected from the syscall update_elem. It also tests the whole uptr struct located exactly at the end of a page and ensures that this case is accepted by update_elem. Signed-off-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20241023234759.860539-10-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/prog_tests/task_local_storage.c | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c index 4c8eadd1f083..b7af0921b3da 100644 --- a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c +++ b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c @@ -8,6 +8,7 @@ #include /* For SYS_xxx definitions */ #include #include +#include #include #include "task_local_storage_helpers.h" #include "task_local_storage.skel.h" @@ -367,6 +368,46 @@ out: close(parent_task_fd); } +static void test_uptr_across_pages(void) +{ + int page_size = getpagesize(); + struct value_type value = {}; + struct task_ls_uptr *skel; + int err, task_fd, map_fd; + void *mem; + + task_fd = sys_pidfd_open(getpid(), 0); + if (!ASSERT_OK_FD(task_fd, "task_fd")) + return; + + mem = mmap(NULL, page_size * 2, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + if (!ASSERT_OK_PTR(mem, "mmap(page_size * 2)")) { + close(task_fd); + return; + } + + skel = task_ls_uptr__open_and_load(); + if (!ASSERT_OK_PTR(skel, "skel_open_and_load")) + goto out; + + map_fd = bpf_map__fd(skel->maps.datamap); + value.udata = mem + page_size - offsetof(struct user_data, b); + err = bpf_map_update_elem(map_fd, &task_fd, &value, 0); + if (!ASSERT_ERR(err, "update_elem(udata)")) + goto out; + ASSERT_EQ(errno, EOPNOTSUPP, "errno"); + + value.udata = mem + page_size - sizeof(struct user_data); + err = bpf_map_update_elem(map_fd, &task_fd, &value, 0); + ASSERT_OK(err, "update_elem(udata)"); + +out: + task_ls_uptr__destroy(skel); + close(task_fd); + munmap(mem, page_size * 2); +} + void test_task_local_storage(void) { if (test__start_subtest("sys_enter_exit")) @@ -379,4 +420,6 @@ void test_task_local_storage(void) test_nodeadlock(); if (test__start_subtest("uptr_basic")) test_uptr_basic(); + if (test__start_subtest("uptr_across_pages")) + test_uptr_across_pages(); } -- cgit v1.2.3 From cbf9f849a3e86f1b7c041dfbeeae1c1fff0ddc8d Mon Sep 17 00:00:00 2001 From: Martin KaFai Lau Date: Wed, 23 Oct 2024 16:47:57 -0700 Subject: selftests/bpf: Add update_elem failure test for task storage uptr This patch test the following failures in syscall update_elem 1. The first update_elem(BPF_F_LOCK) should be EOPNOTSUPP. syscall.c takes care of unpinning the uptr. 2. The second update_elem(BPF_EXIST) fails. syscall.c takes care of unpinning the uptr. 3. The forth update_elem(BPF_NOEXIST) fails. bpf_local_storage_update takes care of unpinning the uptr. Signed-off-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20241023234759.860539-11-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/prog_tests/task_local_storage.c | 45 ++++++++++++++++++++++ .../selftests/bpf/progs/uptr_update_failure.c | 42 ++++++++++++++++++++ tools/testing/selftests/bpf/uptr_test_common.h | 5 +++ 3 files changed, 92 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/uptr_update_failure.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c index b7af0921b3da..e985665efe7a 100644 --- a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c +++ b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c @@ -17,6 +17,7 @@ #include "task_storage_nodeadlock.skel.h" #include "uptr_test_common.h" #include "task_ls_uptr.skel.h" +#include "uptr_update_failure.skel.h" static void test_sys_enter_exit(void) { @@ -408,6 +409,48 @@ out: munmap(mem, page_size * 2); } +static void test_uptr_update_failure(void) +{ + struct value_lock_type value = {}; + struct uptr_update_failure *skel; + int err, task_fd, map_fd; + + task_fd = sys_pidfd_open(getpid(), 0); + if (!ASSERT_OK_FD(task_fd, "task_fd")) + return; + + skel = uptr_update_failure__open_and_load(); + if (!ASSERT_OK_PTR(skel, "skel_open_and_load")) + goto out; + + map_fd = bpf_map__fd(skel->maps.datamap); + + value.udata = &udata; + err = bpf_map_update_elem(map_fd, &task_fd, &value, BPF_F_LOCK); + if (!ASSERT_ERR(err, "update_elem(udata, BPF_F_LOCK)")) + goto out; + ASSERT_EQ(errno, EOPNOTSUPP, "errno"); + + err = bpf_map_update_elem(map_fd, &task_fd, &value, BPF_EXIST); + if (!ASSERT_ERR(err, "update_elem(udata, BPF_EXIST)")) + goto out; + ASSERT_EQ(errno, ENOENT, "errno"); + + err = bpf_map_update_elem(map_fd, &task_fd, &value, BPF_NOEXIST); + if (!ASSERT_OK(err, "update_elem(udata, BPF_NOEXIST)")) + goto out; + + value.udata = &udata2; + err = bpf_map_update_elem(map_fd, &task_fd, &value, BPF_NOEXIST); + if (!ASSERT_ERR(err, "update_elem(udata2, BPF_NOEXIST)")) + goto out; + ASSERT_EQ(errno, EEXIST, "errno"); + +out: + uptr_update_failure__destroy(skel); + close(task_fd); +} + void test_task_local_storage(void) { if (test__start_subtest("sys_enter_exit")) @@ -422,4 +465,6 @@ void test_task_local_storage(void) test_uptr_basic(); if (test__start_subtest("uptr_across_pages")) test_uptr_across_pages(); + if (test__start_subtest("uptr_update_failure")) + test_uptr_update_failure(); } diff --git a/tools/testing/selftests/bpf/progs/uptr_update_failure.c b/tools/testing/selftests/bpf/progs/uptr_update_failure.c new file mode 100644 index 000000000000..86c3bb954abc --- /dev/null +++ b/tools/testing/selftests/bpf/progs/uptr_update_failure.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ + +#include +#include +#include "uptr_test_common.h" + +struct { + __uint(type, BPF_MAP_TYPE_TASK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, struct value_lock_type); +} datamap SEC(".maps"); + +/* load test only. not used */ +SEC("syscall") +int not_used(void *ctx) +{ + struct value_lock_type *ptr; + struct task_struct *task; + struct user_data *udata; + + task = bpf_get_current_task_btf(); + ptr = bpf_task_storage_get(&datamap, task, 0, 0); + if (!ptr) + return 0; + + bpf_spin_lock(&ptr->lock); + + udata = ptr->udata; + if (!udata) { + bpf_spin_unlock(&ptr->lock); + return 0; + } + udata->result = MAGIC_VALUE + udata->a + udata->b; + + bpf_spin_unlock(&ptr->lock); + + return 0; +} + +char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/uptr_test_common.h b/tools/testing/selftests/bpf/uptr_test_common.h index feb41176888c..45c00c80d935 100644 --- a/tools/testing/selftests/bpf/uptr_test_common.h +++ b/tools/testing/selftests/bpf/uptr_test_common.h @@ -32,4 +32,9 @@ struct value_type { struct nested_udata nested; }; +struct value_lock_type { + struct user_data __uptr *udata; + struct bpf_spin_lock lock; +}; + #endif -- cgit v1.2.3 From 898cbca4a7579bea3ab746cd8dc33027bff80dac Mon Sep 17 00:00:00 2001 From: Martin KaFai Lau Date: Wed, 23 Oct 2024 16:47:58 -0700 Subject: selftests/bpf: Add uptr failure verifier tests Add verifier tests to ensure invalid uptr usages are rejected. Signed-off-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20241023234759.860539-12-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/prog_tests/task_local_storage.c | 2 + tools/testing/selftests/bpf/progs/uptr_failure.c | 105 +++++++++++++++++++++ 2 files changed, 107 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/uptr_failure.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c index e985665efe7a..772ed7ce4feb 100644 --- a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c +++ b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c @@ -18,6 +18,7 @@ #include "uptr_test_common.h" #include "task_ls_uptr.skel.h" #include "uptr_update_failure.skel.h" +#include "uptr_failure.skel.h" static void test_sys_enter_exit(void) { @@ -467,4 +468,5 @@ void test_task_local_storage(void) test_uptr_across_pages(); if (test__start_subtest("uptr_update_failure")) test_uptr_update_failure(); + RUN_TESTS(uptr_failure); } diff --git a/tools/testing/selftests/bpf/progs/uptr_failure.c b/tools/testing/selftests/bpf/progs/uptr_failure.c new file mode 100644 index 000000000000..0cfa1fd61440 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/uptr_failure.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ + +#include +#include +#include "bpf_experimental.h" +#include "bpf_misc.h" +#include "uptr_test_common.h" + +struct { + __uint(type, BPF_MAP_TYPE_TASK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, struct value_type); +} datamap SEC(".maps"); + +SEC("?syscall") +__failure __msg("store to uptr disallowed") +int uptr_write(const void *ctx) +{ + struct task_struct *task; + struct value_type *v; + + task = bpf_get_current_task_btf(); + v = bpf_task_storage_get(&datamap, task, 0, + BPF_LOCAL_STORAGE_GET_F_CREATE); + if (!v) + return 0; + + v->udata = NULL; + return 0; +} + +SEC("?syscall") +__failure __msg("store to uptr disallowed") +int uptr_write_nested(const void *ctx) +{ + struct task_struct *task; + struct value_type *v; + + task = bpf_get_current_task_btf(); + v = bpf_task_storage_get(&datamap, task, 0, + BPF_LOCAL_STORAGE_GET_F_CREATE); + if (!v) + return 0; + + v->nested.udata = NULL; + return 0; +} + +SEC("?syscall") +__failure __msg("R1 invalid mem access 'mem_or_null'") +int uptr_no_null_check(const void *ctx) +{ + struct task_struct *task; + struct value_type *v; + + task = bpf_get_current_task_btf(); + v = bpf_task_storage_get(&datamap, task, 0, + BPF_LOCAL_STORAGE_GET_F_CREATE); + if (!v) + return 0; + + v->udata->result = 0; + + return 0; +} + +SEC("?syscall") +__failure __msg("doesn't point to kptr") +int uptr_kptr_xchg(const void *ctx) +{ + struct task_struct *task; + struct value_type *v; + + task = bpf_get_current_task_btf(); + v = bpf_task_storage_get(&datamap, task, 0, + BPF_LOCAL_STORAGE_GET_F_CREATE); + if (!v) + return 0; + + bpf_kptr_xchg(&v->udata, NULL); + + return 0; +} + +SEC("?syscall") +__failure __msg("invalid mem access 'scalar'") +int uptr_obj_new(const void *ctx) +{ + struct value_type *v; + + v = bpf_obj_new(typeof(*v)); + if (!v) + return 0; + + if (v->udata) + v->udata->result = 0; + + bpf_obj_drop(v); + + return 0; +} + +char _license[] SEC("license") = "GPL"; -- cgit v1.2.3 From bd5879a6fe4be407bf36c212cd91ed1e4485a6f9 Mon Sep 17 00:00:00 2001 From: Martin KaFai Lau Date: Wed, 23 Oct 2024 16:47:59 -0700 Subject: selftests/bpf: Create task_local_storage map with invalid uptr's struct This patch tests the map creation failure when the map_value has unsupported uptr. The three cases are the struct is larger than one page, the struct is empty, and the struct is a kernel struct. Signed-off-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20241023234759.860539-13-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/prog_tests/task_local_storage.c | 46 ++++++++++++++++++++++ .../testing/selftests/bpf/progs/uptr_map_failure.c | 27 +++++++++++++ tools/testing/selftests/bpf/test_progs.h | 8 ++++ tools/testing/selftests/bpf/uptr_test_common.h | 23 +++++++++++ 4 files changed, 104 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/uptr_map_failure.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c index 772ed7ce4feb..00cc9d0aee5d 100644 --- a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c +++ b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c @@ -10,6 +10,7 @@ #include #include #include +#include #include "task_local_storage_helpers.h" #include "task_local_storage.skel.h" #include "task_local_storage_exit_creds.skel.h" @@ -19,6 +20,7 @@ #include "task_ls_uptr.skel.h" #include "uptr_update_failure.skel.h" #include "uptr_failure.skel.h" +#include "uptr_map_failure.skel.h" static void test_sys_enter_exit(void) { @@ -452,6 +454,40 @@ out: close(task_fd); } +static void test_uptr_map_failure(const char *map_name, int expected_errno) +{ + LIBBPF_OPTS(bpf_map_create_opts, create_attr); + struct uptr_map_failure *skel; + struct bpf_map *map; + struct btf *btf; + int map_fd, err; + + skel = uptr_map_failure__open(); + if (!ASSERT_OK_PTR(skel, "uptr_map_failure__open")) + return; + + map = bpf_object__find_map_by_name(skel->obj, map_name); + btf = bpf_object__btf(skel->obj); + err = btf__load_into_kernel(btf); + if (!ASSERT_OK(err, "btf__load_into_kernel")) + goto done; + + create_attr.map_flags = bpf_map__map_flags(map); + create_attr.btf_fd = btf__fd(btf); + create_attr.btf_key_type_id = bpf_map__btf_key_type_id(map); + create_attr.btf_value_type_id = bpf_map__btf_value_type_id(map); + map_fd = bpf_map_create(bpf_map__type(map), map_name, + bpf_map__key_size(map), bpf_map__value_size(map), + 0, &create_attr); + if (ASSERT_ERR_FD(map_fd, "map_create")) + ASSERT_EQ(errno, expected_errno, "errno"); + else + close(map_fd); + +done: + uptr_map_failure__destroy(skel); +} + void test_task_local_storage(void) { if (test__start_subtest("sys_enter_exit")) @@ -468,5 +504,15 @@ void test_task_local_storage(void) test_uptr_across_pages(); if (test__start_subtest("uptr_update_failure")) test_uptr_update_failure(); + if (test__start_subtest("uptr_map_failure_e2big")) { + if (getpagesize() == PAGE_SIZE) + test_uptr_map_failure("large_uptr_map", E2BIG); + else + test__skip(); + } + if (test__start_subtest("uptr_map_failure_size0")) + test_uptr_map_failure("empty_uptr_map", EINVAL); + if (test__start_subtest("uptr_map_failure_kstruct")) + test_uptr_map_failure("kstruct_uptr_map", EINVAL); RUN_TESTS(uptr_failure); } diff --git a/tools/testing/selftests/bpf/progs/uptr_map_failure.c b/tools/testing/selftests/bpf/progs/uptr_map_failure.c new file mode 100644 index 000000000000..417b763d76b4 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/uptr_map_failure.c @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ + +#include +#include +#include "uptr_test_common.h" + +struct { + __uint(type, BPF_MAP_TYPE_TASK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, struct large_uptr); +} large_uptr_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_TASK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, struct empty_uptr); +} empty_uptr_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_TASK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, struct kstruct_uptr); +} kstruct_uptr_map SEC(".maps"); diff --git a/tools/testing/selftests/bpf/test_progs.h b/tools/testing/selftests/bpf/test_progs.h index 7767d9a825ae..7a58895867c3 100644 --- a/tools/testing/selftests/bpf/test_progs.h +++ b/tools/testing/selftests/bpf/test_progs.h @@ -390,6 +390,14 @@ int test__join_cgroup(const char *path); ___ok; \ }) +#define ASSERT_ERR_FD(fd, name) ({ \ + static int duration = 0; \ + int ___fd = (fd); \ + bool ___ok = ___fd < 0; \ + CHECK(!___ok, (name), "unexpected fd: %d\n", ___fd); \ + ___ok; \ +}) + #define SYS(goto_label, fmt, ...) \ ({ \ char cmd[1024]; \ diff --git a/tools/testing/selftests/bpf/uptr_test_common.h b/tools/testing/selftests/bpf/uptr_test_common.h index 45c00c80d935..f8a134ba12f9 100644 --- a/tools/testing/selftests/bpf/uptr_test_common.h +++ b/tools/testing/selftests/bpf/uptr_test_common.h @@ -5,9 +5,12 @@ #define _UPTR_TEST_COMMON_H #define MAGIC_VALUE 0xabcd1234 +#define PAGE_SIZE 4096 #ifdef __BPF__ /* Avoid fwd btf type being generated for the following struct */ +struct large_data *dummy_large_data; +struct empty_data *dummy_empty_data; struct user_data *dummy_data; struct cgroup *dummy_cgrp; #else @@ -37,4 +40,24 @@ struct value_lock_type { struct bpf_spin_lock lock; }; +struct large_data { + __u8 one_page[PAGE_SIZE]; + int a; +}; + +struct large_uptr { + struct large_data __uptr *udata; +}; + +struct empty_data { +}; + +struct empty_uptr { + struct empty_data __uptr *udata; +}; + +struct kstruct_uptr { + struct cgroup __uptr *cgrp; +}; + #endif -- cgit v1.2.3 From 7470b5afd150e683c7aef03961d0c4c6f500de3b Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Wed, 16 Oct 2024 13:27:48 -0700 Subject: riscv: selftests: Add a pointer masking test This test covers the behavior of the PR_SET_TAGGED_ADDR_CTRL and PR_GET_TAGGED_ADDR_CTRL prctl() operations, their effects on the userspace ABI, and their effects on the system call ABI. Reviewed-by: Charlie Jenkins Tested-by: Charlie Jenkins Signed-off-by: Samuel Holland Link: https://lore.kernel.org/r/20241016202814.4061541-8-samuel.holland@sifive.com Signed-off-by: Palmer Dabbelt --- tools/testing/selftests/riscv/Makefile | 2 +- tools/testing/selftests/riscv/abi/.gitignore | 1 + tools/testing/selftests/riscv/abi/Makefile | 10 + .../testing/selftests/riscv/abi/pointer_masking.c | 332 +++++++++++++++++++++ 4 files changed, 344 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/riscv/abi/.gitignore create mode 100644 tools/testing/selftests/riscv/abi/Makefile create mode 100644 tools/testing/selftests/riscv/abi/pointer_masking.c (limited to 'tools') diff --git a/tools/testing/selftests/riscv/Makefile b/tools/testing/selftests/riscv/Makefile index 7ce03d832b64..099b8c1f46f8 100644 --- a/tools/testing/selftests/riscv/Makefile +++ b/tools/testing/selftests/riscv/Makefile @@ -5,7 +5,7 @@ ARCH ?= $(shell uname -m 2>/dev/null || echo not) ifneq (,$(filter $(ARCH),riscv)) -RISCV_SUBTARGETS ?= hwprobe vector mm sigreturn +RISCV_SUBTARGETS ?= abi hwprobe mm sigreturn vector else RISCV_SUBTARGETS := endif diff --git a/tools/testing/selftests/riscv/abi/.gitignore b/tools/testing/selftests/riscv/abi/.gitignore new file mode 100644 index 000000000000..b38358f91c4d --- /dev/null +++ b/tools/testing/selftests/riscv/abi/.gitignore @@ -0,0 +1 @@ +pointer_masking diff --git a/tools/testing/selftests/riscv/abi/Makefile b/tools/testing/selftests/riscv/abi/Makefile new file mode 100644 index 000000000000..ed82ff9c664e --- /dev/null +++ b/tools/testing/selftests/riscv/abi/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0 + +CFLAGS += -I$(top_srcdir)/tools/include + +TEST_GEN_PROGS := pointer_masking + +include ../../lib.mk + +$(OUTPUT)/pointer_masking: pointer_masking.c + $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^ diff --git a/tools/testing/selftests/riscv/abi/pointer_masking.c b/tools/testing/selftests/riscv/abi/pointer_masking.c new file mode 100644 index 000000000000..dee41b7ee3e3 --- /dev/null +++ b/tools/testing/selftests/riscv/abi/pointer_masking.c @@ -0,0 +1,332 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../../kselftest.h" + +#ifndef PR_PMLEN_SHIFT +#define PR_PMLEN_SHIFT 24 +#endif +#ifndef PR_PMLEN_MASK +#define PR_PMLEN_MASK (0x7fUL << PR_PMLEN_SHIFT) +#endif + +static int dev_zero; + +static int pipefd[2]; + +static sigjmp_buf jmpbuf; + +static void sigsegv_handler(int sig) +{ + siglongjmp(jmpbuf, 1); +} + +static int min_pmlen; +static int max_pmlen; + +static inline bool valid_pmlen(int pmlen) +{ + return pmlen == 0 || pmlen == 7 || pmlen == 16; +} + +static void test_pmlen(void) +{ + ksft_print_msg("Testing available PMLEN values\n"); + + for (int request = 0; request <= 16; request++) { + int pmlen, ret; + + ret = prctl(PR_SET_TAGGED_ADDR_CTRL, request << PR_PMLEN_SHIFT, 0, 0, 0); + if (ret) + goto pr_set_error; + + ret = prctl(PR_GET_TAGGED_ADDR_CTRL, 0, 0, 0, 0); + ksft_test_result(ret >= 0, "PMLEN=%d PR_GET_TAGGED_ADDR_CTRL\n", request); + if (ret < 0) + goto pr_get_error; + + pmlen = (ret & PR_PMLEN_MASK) >> PR_PMLEN_SHIFT; + ksft_test_result(pmlen >= request, "PMLEN=%d constraint\n", request); + ksft_test_result(valid_pmlen(pmlen), "PMLEN=%d validity\n", request); + + if (min_pmlen == 0) + min_pmlen = pmlen; + if (max_pmlen < pmlen) + max_pmlen = pmlen; + + continue; + +pr_set_error: + ksft_test_result_skip("PMLEN=%d PR_GET_TAGGED_ADDR_CTRL\n", request); +pr_get_error: + ksft_test_result_skip("PMLEN=%d constraint\n", request); + ksft_test_result_skip("PMLEN=%d validity\n", request); + } + + if (max_pmlen == 0) + ksft_exit_fail_msg("Failed to enable pointer masking\n"); +} + +static int set_tagged_addr_ctrl(int pmlen, bool tagged_addr_abi) +{ + int arg, ret; + + arg = pmlen << PR_PMLEN_SHIFT | tagged_addr_abi; + ret = prctl(PR_SET_TAGGED_ADDR_CTRL, arg, 0, 0, 0); + if (!ret) { + ret = prctl(PR_GET_TAGGED_ADDR_CTRL, 0, 0, 0, 0); + if (ret == arg) + return 0; + } + + return ret < 0 ? -errno : -ENODATA; +} + +static void test_dereference_pmlen(int pmlen) +{ + static volatile int i; + volatile int *p; + int ret; + + ret = set_tagged_addr_ctrl(pmlen, false); + if (ret) + return ksft_test_result_error("PMLEN=%d setup (%d)\n", pmlen, ret); + + i = pmlen; + + if (pmlen) { + p = (volatile int *)((uintptr_t)&i | 1UL << (__riscv_xlen - pmlen)); + + /* These dereferences should succeed. */ + if (sigsetjmp(jmpbuf, 1)) + return ksft_test_result_fail("PMLEN=%d valid tag\n", pmlen); + if (*p != pmlen) + return ksft_test_result_fail("PMLEN=%d bad value\n", pmlen); + ++*p; + } + + p = (volatile int *)((uintptr_t)&i | 1UL << (__riscv_xlen - pmlen - 1)); + + /* These dereferences should raise SIGSEGV. */ + if (sigsetjmp(jmpbuf, 1)) + return ksft_test_result_pass("PMLEN=%d dereference\n", pmlen); + ++*p; + ksft_test_result_fail("PMLEN=%d invalid tag\n", pmlen); +} + +static void test_dereference(void) +{ + ksft_print_msg("Testing userspace pointer dereference\n"); + + signal(SIGSEGV, sigsegv_handler); + + test_dereference_pmlen(0); + test_dereference_pmlen(min_pmlen); + test_dereference_pmlen(max_pmlen); + + signal(SIGSEGV, SIG_DFL); +} + +static void execve_child_sigsegv_handler(int sig) +{ + exit(42); +} + +static int execve_child(void) +{ + static volatile int i; + volatile int *p = (volatile int *)((uintptr_t)&i | 1UL << (__riscv_xlen - 7)); + + signal(SIGSEGV, execve_child_sigsegv_handler); + + /* This dereference should raise SIGSEGV. */ + return *p; +} + +static void test_fork_exec(void) +{ + int ret, status; + + ksft_print_msg("Testing fork/exec behavior\n"); + + ret = set_tagged_addr_ctrl(min_pmlen, false); + if (ret) + return ksft_test_result_error("setup (%d)\n", ret); + + if (fork()) { + wait(&status); + ksft_test_result(WIFEXITED(status) && WEXITSTATUS(status) == 42, + "dereference after fork\n"); + } else { + static volatile int i = 42; + volatile int *p; + + p = (volatile int *)((uintptr_t)&i | 1UL << (__riscv_xlen - min_pmlen)); + + /* This dereference should succeed. */ + exit(*p); + } + + if (fork()) { + wait(&status); + ksft_test_result(WIFEXITED(status) && WEXITSTATUS(status) == 42, + "dereference after fork+exec\n"); + } else { + /* Will call execve_child(). */ + execve("/proc/self/exe", (char *const []) { "", NULL }, NULL); + } +} + +static void test_tagged_addr_abi_sysctl(void) +{ + char value; + int fd; + + ksft_print_msg("Testing tagged address ABI sysctl\n"); + + fd = open("/proc/sys/abi/tagged_addr_disabled", O_WRONLY); + if (fd < 0) { + ksft_test_result_skip("failed to open sysctl file\n"); + ksft_test_result_skip("failed to open sysctl file\n"); + return; + } + + value = '1'; + pwrite(fd, &value, 1, 0); + ksft_test_result(set_tagged_addr_ctrl(min_pmlen, true) == -EINVAL, + "sysctl disabled\n"); + + value = '0'; + pwrite(fd, &value, 1, 0); + ksft_test_result(set_tagged_addr_ctrl(min_pmlen, true) == 0, + "sysctl enabled\n"); + + set_tagged_addr_ctrl(0, false); + + close(fd); +} + +static void test_tagged_addr_abi_pmlen(int pmlen) +{ + int i, *p, ret; + + i = ~pmlen; + + if (pmlen) { + p = (int *)((uintptr_t)&i | 1UL << (__riscv_xlen - pmlen)); + + ret = set_tagged_addr_ctrl(pmlen, false); + if (ret) + return ksft_test_result_error("PMLEN=%d ABI disabled setup (%d)\n", + pmlen, ret); + + ret = write(pipefd[1], p, sizeof(*p)); + if (ret >= 0 || errno != EFAULT) + return ksft_test_result_fail("PMLEN=%d ABI disabled write\n", pmlen); + + ret = read(dev_zero, p, sizeof(*p)); + if (ret >= 0 || errno != EFAULT) + return ksft_test_result_fail("PMLEN=%d ABI disabled read\n", pmlen); + + if (i != ~pmlen) + return ksft_test_result_fail("PMLEN=%d ABI disabled value\n", pmlen); + + ret = set_tagged_addr_ctrl(pmlen, true); + if (ret) + return ksft_test_result_error("PMLEN=%d ABI enabled setup (%d)\n", + pmlen, ret); + + ret = write(pipefd[1], p, sizeof(*p)); + if (ret != sizeof(*p)) + return ksft_test_result_fail("PMLEN=%d ABI enabled write\n", pmlen); + + ret = read(dev_zero, p, sizeof(*p)); + if (ret != sizeof(*p)) + return ksft_test_result_fail("PMLEN=%d ABI enabled read\n", pmlen); + + if (i) + return ksft_test_result_fail("PMLEN=%d ABI enabled value\n", pmlen); + + i = ~pmlen; + } else { + /* The tagged address ABI cannot be enabled when PMLEN == 0. */ + ret = set_tagged_addr_ctrl(pmlen, true); + if (ret != -EINVAL) + return ksft_test_result_error("PMLEN=%d ABI setup (%d)\n", + pmlen, ret); + } + + p = (int *)((uintptr_t)&i | 1UL << (__riscv_xlen - pmlen - 1)); + + ret = write(pipefd[1], p, sizeof(*p)); + if (ret >= 0 || errno != EFAULT) + return ksft_test_result_fail("PMLEN=%d invalid tag write (%d)\n", pmlen, errno); + + ret = read(dev_zero, p, sizeof(*p)); + if (ret >= 0 || errno != EFAULT) + return ksft_test_result_fail("PMLEN=%d invalid tag read\n", pmlen); + + if (i != ~pmlen) + return ksft_test_result_fail("PMLEN=%d invalid tag value\n", pmlen); + + ksft_test_result_pass("PMLEN=%d tagged address ABI\n", pmlen); +} + +static void test_tagged_addr_abi(void) +{ + ksft_print_msg("Testing tagged address ABI\n"); + + test_tagged_addr_abi_pmlen(0); + test_tagged_addr_abi_pmlen(min_pmlen); + test_tagged_addr_abi_pmlen(max_pmlen); +} + +static struct test_info { + unsigned int nr_tests; + void (*test_fn)(void); +} tests[] = { + { .nr_tests = 17 * 3, test_pmlen }, + { .nr_tests = 3, test_dereference }, + { .nr_tests = 2, test_fork_exec }, + { .nr_tests = 2, test_tagged_addr_abi_sysctl }, + { .nr_tests = 3, test_tagged_addr_abi }, +}; + +int main(int argc, char **argv) +{ + unsigned int plan = 0; + int ret; + + /* Check if this is the child process after execve(). */ + if (!argv[0][0]) + return execve_child(); + + dev_zero = open("/dev/zero", O_RDWR); + if (dev_zero < 0) + return 1; + + /* Write to a pipe so the kernel must dereference the buffer pointer. */ + ret = pipe(pipefd); + if (ret) + return 1; + + ksft_print_header(); + + for (int i = 0; i < ARRAY_SIZE(tests); i++) + plan += tests[i].nr_tests; + + ksft_set_plan(plan); + + for (int i = 0; i < ARRAY_SIZE(tests); i++) + tests[i].test_fn(); + + ksft_finished(); +} -- cgit v1.2.3 From 036a1407b4d49790ca5b35436d02de62212bc790 Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Wed, 16 Oct 2024 13:27:51 -0700 Subject: KVM: riscv: selftests: Add Smnpm and Ssnpm to get-reg-list test Add testing for the pointer masking extensions exposed to KVM guests. Reviewed-by: Anup Patel Signed-off-by: Samuel Holland Link: https://lore.kernel.org/r/20241016202814.4061541-11-samuel.holland@sifive.com Signed-off-by: Palmer Dabbelt --- tools/testing/selftests/kvm/riscv/get-reg-list.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/riscv/get-reg-list.c b/tools/testing/selftests/kvm/riscv/get-reg-list.c index 8e34f7fa44e9..54ab484d0000 100644 --- a/tools/testing/selftests/kvm/riscv/get-reg-list.c +++ b/tools/testing/selftests/kvm/riscv/get-reg-list.c @@ -41,9 +41,11 @@ bool filter_reg(__u64 reg) case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_I: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_M: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_V: + case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SMNPM: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SMSTATEEN: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SSAIA: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SSCOFPMF: + case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SSNPM: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SSTC: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SVINVAL: case KVM_REG_RISCV_ISA_EXT | KVM_REG_RISCV_ISA_SINGLE | KVM_RISCV_ISA_EXT_SVNAPOT: @@ -414,9 +416,11 @@ static const char *isa_ext_single_id_to_str(__u64 reg_off) KVM_ISA_EXT_ARR(I), KVM_ISA_EXT_ARR(M), KVM_ISA_EXT_ARR(V), + KVM_ISA_EXT_ARR(SMNPM), KVM_ISA_EXT_ARR(SMSTATEEN), KVM_ISA_EXT_ARR(SSAIA), KVM_ISA_EXT_ARR(SSCOFPMF), + KVM_ISA_EXT_ARR(SSNPM), KVM_ISA_EXT_ARR(SSTC), KVM_ISA_EXT_ARR(SVINVAL), KVM_ISA_EXT_ARR(SVNAPOT), @@ -946,8 +950,10 @@ KVM_ISA_EXT_SUBLIST_CONFIG(aia, AIA); KVM_ISA_EXT_SUBLIST_CONFIG(fp_f, FP_F); KVM_ISA_EXT_SUBLIST_CONFIG(fp_d, FP_D); KVM_ISA_EXT_SIMPLE_CONFIG(h, H); +KVM_ISA_EXT_SIMPLE_CONFIG(smnpm, SMNPM); KVM_ISA_EXT_SUBLIST_CONFIG(smstateen, SMSTATEEN); KVM_ISA_EXT_SIMPLE_CONFIG(sscofpmf, SSCOFPMF); +KVM_ISA_EXT_SIMPLE_CONFIG(ssnpm, SSNPM); KVM_ISA_EXT_SIMPLE_CONFIG(sstc, SSTC); KVM_ISA_EXT_SIMPLE_CONFIG(svinval, SVINVAL); KVM_ISA_EXT_SIMPLE_CONFIG(svnapot, SVNAPOT); @@ -1009,8 +1015,10 @@ struct vcpu_reg_list *vcpu_configs[] = { &config_fp_f, &config_fp_d, &config_h, + &config_smnpm, &config_smstateen, &config_sscofpmf, + &config_ssnpm, &config_sstc, &config_svinval, &config_svnapot, -- cgit v1.2.3 From 72be5aa6be4af29fa2d77737e634b9a4c0e02d69 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sat, 19 Oct 2024 18:15:45 +0100 Subject: KVM: selftests: Add test for PSCI SYSTEM_OFF2 Signed-off-by: David Woodhouse Link: https://lore.kernel.org/r/20241019172459.2241939-5-dwmw2@infradead.org Signed-off-by: Oliver Upton --- tools/testing/selftests/kvm/aarch64/psci_test.c | 92 +++++++++++++++++++++++++ 1 file changed, 92 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/aarch64/psci_test.c b/tools/testing/selftests/kvm/aarch64/psci_test.c index 61731a950def..eaa7655fefc1 100644 --- a/tools/testing/selftests/kvm/aarch64/psci_test.c +++ b/tools/testing/selftests/kvm/aarch64/psci_test.c @@ -54,6 +54,15 @@ static uint64_t psci_system_suspend(uint64_t entry_addr, uint64_t context_id) return res.a0; } +static uint64_t psci_system_off2(uint64_t type, uint64_t cookie) +{ + struct arm_smccc_res res; + + smccc_hvc(PSCI_1_3_FN64_SYSTEM_OFF2, type, cookie, 0, 0, 0, 0, 0, &res); + + return res.a0; +} + static uint64_t psci_features(uint32_t func_id) { struct arm_smccc_res res; @@ -188,11 +197,94 @@ static void host_test_system_suspend(void) kvm_vm_free(vm); } +static void guest_test_system_off2(void) +{ + uint64_t ret; + + /* assert that SYSTEM_OFF2 is discoverable */ + GUEST_ASSERT(psci_features(PSCI_1_3_FN_SYSTEM_OFF2) & + PSCI_1_3_OFF_TYPE_HIBERNATE_OFF); + GUEST_ASSERT(psci_features(PSCI_1_3_FN64_SYSTEM_OFF2) & + PSCI_1_3_OFF_TYPE_HIBERNATE_OFF); + + /* With non-zero 'cookie' field, it should fail */ + ret = psci_system_off2(PSCI_1_3_OFF_TYPE_HIBERNATE_OFF, 1); + GUEST_ASSERT(ret == PSCI_RET_INVALID_PARAMS); + + /* + * This would normally never return, so KVM sets the return value + * to PSCI_RET_INTERNAL_FAILURE. The test case *does* return, so + * that it can test both values for HIBERNATE_OFF. + */ + ret = psci_system_off2(PSCI_1_3_OFF_TYPE_HIBERNATE_OFF, 0); + GUEST_ASSERT(ret == PSCI_RET_INTERNAL_FAILURE); + + /* + * Revision F.b of the PSCI v1.3 specification documents zero as an + * alias for HIBERNATE_OFF, since that's the value used in earlier + * revisions of the spec and some implementations in the field. + */ + ret = psci_system_off2(0, 1); + GUEST_ASSERT(ret == PSCI_RET_INVALID_PARAMS); + + ret = psci_system_off2(0, 0); + GUEST_ASSERT(ret == PSCI_RET_INTERNAL_FAILURE); + + GUEST_DONE(); +} + +static void host_test_system_off2(void) +{ + struct kvm_vcpu *source, *target; + struct kvm_mp_state mps; + uint64_t psci_version = 0; + int nr_shutdowns = 0; + struct kvm_run *run; + struct ucall uc; + + setup_vm(guest_test_system_off2, &source, &target); + + vcpu_get_reg(target, KVM_REG_ARM_PSCI_VERSION, &psci_version); + + TEST_ASSERT(psci_version >= PSCI_VERSION(1, 3), + "Unexpected PSCI version %lu.%lu", + PSCI_VERSION_MAJOR(psci_version), + PSCI_VERSION_MINOR(psci_version)); + + vcpu_power_off(target); + run = source->run; + + enter_guest(source); + while (run->exit_reason == KVM_EXIT_SYSTEM_EVENT) { + TEST_ASSERT(run->system_event.type == KVM_SYSTEM_EVENT_SHUTDOWN, + "Unhandled system event: %u (expected: %u)", + run->system_event.type, KVM_SYSTEM_EVENT_SHUTDOWN); + TEST_ASSERT(run->system_event.ndata >= 1, + "Unexpected amount of system event data: %u (expected, >= 1)", + run->system_event.ndata); + TEST_ASSERT(run->system_event.data[0] & KVM_SYSTEM_EVENT_SHUTDOWN_FLAG_PSCI_OFF2, + "PSCI_OFF2 flag not set. Flags %llu (expected %llu)", + run->system_event.data[0], KVM_SYSTEM_EVENT_SHUTDOWN_FLAG_PSCI_OFF2); + + nr_shutdowns++; + + /* Restart the vCPU */ + mps.mp_state = KVM_MP_STATE_RUNNABLE; + vcpu_mp_state_set(source, &mps); + + enter_guest(source); + } + + TEST_ASSERT(get_ucall(source, &uc) == UCALL_DONE, "Guest did not exit cleanly"); + TEST_ASSERT(nr_shutdowns == 2, "Two shutdown events were expected, but saw %d", nr_shutdowns); +} + int main(void) { TEST_REQUIRE(kvm_has_cap(KVM_CAP_ARM_SYSTEM_SUSPEND)); host_test_cpu_on(); host_test_system_suspend(); + host_test_system_off2(); return 0; } -- cgit v1.2.3 From 104edc6efca628389295392ceb87623fe10c41f6 Mon Sep 17 00:00:00 2001 From: Mario Limonciello Date: Fri, 25 Oct 2024 12:14:55 -0500 Subject: x86/cpufeatures: Rename X86_FEATURE_FAST_CPPC to have AMD prefix This feature is an AMD unique feature of some processors, so put AMD into the name. Signed-off-by: Mario Limonciello Signed-off-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/r/20241025171459.1093-2-mario.limonciello@amd.com --- tools/arch/x86/include/asm/cpufeatures.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/arch/x86/include/asm/cpufeatures.h b/tools/arch/x86/include/asm/cpufeatures.h index dd4682857c12..23698d0f4bb4 100644 --- a/tools/arch/x86/include/asm/cpufeatures.h +++ b/tools/arch/x86/include/asm/cpufeatures.h @@ -472,7 +472,7 @@ #define X86_FEATURE_BHI_CTRL (21*32+ 2) /* BHI_DIS_S HW control available */ #define X86_FEATURE_CLEAR_BHB_HW (21*32+ 3) /* BHI_DIS_S HW control enabled */ #define X86_FEATURE_CLEAR_BHB_LOOP_ON_VMEXIT (21*32+ 4) /* Clear branch history at vmexit using SW loop */ -#define X86_FEATURE_FAST_CPPC (21*32 + 5) /* AMD Fast CPPC */ +#define X86_FEATURE_AMD_FAST_CPPC (21*32 + 5) /* AMD Fast CPPC */ /* * BUG word(s) -- cgit v1.2.3 From 9fb8e9178b25f5cf84d9992ac9f8a5d714058b07 Mon Sep 17 00:00:00 2001 From: Oliver Upton Date: Fri, 25 Oct 2024 20:31:04 +0000 Subject: tools: arm64: Grab a copy of esr.h from kernel Grab esr.h and brk-imm.h for subsequent use in KVM selftests. Reviewed-by: Marc Zyngier Link: https://lore.kernel.org/r/20241025203106.3529261-3-oliver.upton@linux.dev Signed-off-by: Oliver Upton --- tools/arch/arm64/include/asm/brk-imm.h | 42 +++ tools/arch/arm64/include/asm/esr.h | 455 +++++++++++++++++++++++++++++++++ 2 files changed, 497 insertions(+) create mode 100644 tools/arch/arm64/include/asm/brk-imm.h create mode 100644 tools/arch/arm64/include/asm/esr.h (limited to 'tools') diff --git a/tools/arch/arm64/include/asm/brk-imm.h b/tools/arch/arm64/include/asm/brk-imm.h new file mode 100644 index 000000000000..beb42c62b6ac --- /dev/null +++ b/tools/arch/arm64/include/asm/brk-imm.h @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2012 ARM Ltd. + */ + +#ifndef __ASM_BRK_IMM_H +#define __ASM_BRK_IMM_H + +/* + * #imm16 values used for BRK instruction generation + * 0x004: for installing kprobes + * 0x005: for installing uprobes + * 0x006: for kprobe software single-step + * 0x007: for kretprobe return + * Allowed values for kgdb are 0x400 - 0x7ff + * 0x100: for triggering a fault on purpose (reserved) + * 0x400: for dynamic BRK instruction + * 0x401: for compile time BRK instruction + * 0x800: kernel-mode BUG() and WARN() traps + * 0x9xx: tag-based KASAN trap (allowed values 0x900 - 0x9ff) + * 0x55xx: Undefined Behavior Sanitizer traps ('U' << 8) + * 0x8xxx: Control-Flow Integrity traps + */ +#define KPROBES_BRK_IMM 0x004 +#define UPROBES_BRK_IMM 0x005 +#define KPROBES_BRK_SS_IMM 0x006 +#define KRETPROBES_BRK_IMM 0x007 +#define FAULT_BRK_IMM 0x100 +#define KGDB_DYN_DBG_BRK_IMM 0x400 +#define KGDB_COMPILED_DBG_BRK_IMM 0x401 +#define BUG_BRK_IMM 0x800 +#define KASAN_BRK_IMM 0x900 +#define KASAN_BRK_MASK 0x0ff +#define UBSAN_BRK_IMM 0x5500 +#define UBSAN_BRK_MASK 0x00ff + +#define CFI_BRK_IMM_TARGET GENMASK(4, 0) +#define CFI_BRK_IMM_TYPE GENMASK(9, 5) +#define CFI_BRK_IMM_BASE 0x8000 +#define CFI_BRK_IMM_MASK (CFI_BRK_IMM_TARGET | CFI_BRK_IMM_TYPE) + +#endif diff --git a/tools/arch/arm64/include/asm/esr.h b/tools/arch/arm64/include/asm/esr.h new file mode 100644 index 000000000000..bd592ca81571 --- /dev/null +++ b/tools/arch/arm64/include/asm/esr.h @@ -0,0 +1,455 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2013 - ARM Ltd + * Author: Marc Zyngier + */ + +#ifndef __ASM_ESR_H +#define __ASM_ESR_H + +#include + +#define ESR_ELx_EC_UNKNOWN UL(0x00) +#define ESR_ELx_EC_WFx UL(0x01) +/* Unallocated EC: 0x02 */ +#define ESR_ELx_EC_CP15_32 UL(0x03) +#define ESR_ELx_EC_CP15_64 UL(0x04) +#define ESR_ELx_EC_CP14_MR UL(0x05) +#define ESR_ELx_EC_CP14_LS UL(0x06) +#define ESR_ELx_EC_FP_ASIMD UL(0x07) +#define ESR_ELx_EC_CP10_ID UL(0x08) /* EL2 only */ +#define ESR_ELx_EC_PAC UL(0x09) /* EL2 and above */ +/* Unallocated EC: 0x0A - 0x0B */ +#define ESR_ELx_EC_CP14_64 UL(0x0C) +#define ESR_ELx_EC_BTI UL(0x0D) +#define ESR_ELx_EC_ILL UL(0x0E) +/* Unallocated EC: 0x0F - 0x10 */ +#define ESR_ELx_EC_SVC32 UL(0x11) +#define ESR_ELx_EC_HVC32 UL(0x12) /* EL2 only */ +#define ESR_ELx_EC_SMC32 UL(0x13) /* EL2 and above */ +/* Unallocated EC: 0x14 */ +#define ESR_ELx_EC_SVC64 UL(0x15) +#define ESR_ELx_EC_HVC64 UL(0x16) /* EL2 and above */ +#define ESR_ELx_EC_SMC64 UL(0x17) /* EL2 and above */ +#define ESR_ELx_EC_SYS64 UL(0x18) +#define ESR_ELx_EC_SVE UL(0x19) +#define ESR_ELx_EC_ERET UL(0x1a) /* EL2 only */ +/* Unallocated EC: 0x1B */ +#define ESR_ELx_EC_FPAC UL(0x1C) /* EL1 and above */ +#define ESR_ELx_EC_SME UL(0x1D) +/* Unallocated EC: 0x1E */ +#define ESR_ELx_EC_IMP_DEF UL(0x1f) /* EL3 only */ +#define ESR_ELx_EC_IABT_LOW UL(0x20) +#define ESR_ELx_EC_IABT_CUR UL(0x21) +#define ESR_ELx_EC_PC_ALIGN UL(0x22) +/* Unallocated EC: 0x23 */ +#define ESR_ELx_EC_DABT_LOW UL(0x24) +#define ESR_ELx_EC_DABT_CUR UL(0x25) +#define ESR_ELx_EC_SP_ALIGN UL(0x26) +#define ESR_ELx_EC_MOPS UL(0x27) +#define ESR_ELx_EC_FP_EXC32 UL(0x28) +/* Unallocated EC: 0x29 - 0x2B */ +#define ESR_ELx_EC_FP_EXC64 UL(0x2C) +/* Unallocated EC: 0x2D - 0x2E */ +#define ESR_ELx_EC_SERROR UL(0x2F) +#define ESR_ELx_EC_BREAKPT_LOW UL(0x30) +#define ESR_ELx_EC_BREAKPT_CUR UL(0x31) +#define ESR_ELx_EC_SOFTSTP_LOW UL(0x32) +#define ESR_ELx_EC_SOFTSTP_CUR UL(0x33) +#define ESR_ELx_EC_WATCHPT_LOW UL(0x34) +#define ESR_ELx_EC_WATCHPT_CUR UL(0x35) +/* Unallocated EC: 0x36 - 0x37 */ +#define ESR_ELx_EC_BKPT32 UL(0x38) +/* Unallocated EC: 0x39 */ +#define ESR_ELx_EC_VECTOR32 UL(0x3A) /* EL2 only */ +/* Unallocated EC: 0x3B */ +#define ESR_ELx_EC_BRK64 UL(0x3C) +/* Unallocated EC: 0x3D - 0x3F */ +#define ESR_ELx_EC_MAX UL(0x3F) + +#define ESR_ELx_EC_SHIFT (26) +#define ESR_ELx_EC_WIDTH (6) +#define ESR_ELx_EC_MASK (UL(0x3F) << ESR_ELx_EC_SHIFT) +#define ESR_ELx_EC(esr) (((esr) & ESR_ELx_EC_MASK) >> ESR_ELx_EC_SHIFT) + +#define ESR_ELx_IL_SHIFT (25) +#define ESR_ELx_IL (UL(1) << ESR_ELx_IL_SHIFT) +#define ESR_ELx_ISS_MASK (GENMASK(24, 0)) +#define ESR_ELx_ISS(esr) ((esr) & ESR_ELx_ISS_MASK) +#define ESR_ELx_ISS2_SHIFT (32) +#define ESR_ELx_ISS2_MASK (GENMASK_ULL(55, 32)) +#define ESR_ELx_ISS2(esr) (((esr) & ESR_ELx_ISS2_MASK) >> ESR_ELx_ISS2_SHIFT) + +/* ISS field definitions shared by different classes */ +#define ESR_ELx_WNR_SHIFT (6) +#define ESR_ELx_WNR (UL(1) << ESR_ELx_WNR_SHIFT) + +/* Asynchronous Error Type */ +#define ESR_ELx_IDS_SHIFT (24) +#define ESR_ELx_IDS (UL(1) << ESR_ELx_IDS_SHIFT) +#define ESR_ELx_AET_SHIFT (10) +#define ESR_ELx_AET (UL(0x7) << ESR_ELx_AET_SHIFT) + +#define ESR_ELx_AET_UC (UL(0) << ESR_ELx_AET_SHIFT) +#define ESR_ELx_AET_UEU (UL(1) << ESR_ELx_AET_SHIFT) +#define ESR_ELx_AET_UEO (UL(2) << ESR_ELx_AET_SHIFT) +#define ESR_ELx_AET_UER (UL(3) << ESR_ELx_AET_SHIFT) +#define ESR_ELx_AET_CE (UL(6) << ESR_ELx_AET_SHIFT) + +/* Shared ISS field definitions for Data/Instruction aborts */ +#define ESR_ELx_SET_SHIFT (11) +#define ESR_ELx_SET_MASK (UL(3) << ESR_ELx_SET_SHIFT) +#define ESR_ELx_FnV_SHIFT (10) +#define ESR_ELx_FnV (UL(1) << ESR_ELx_FnV_SHIFT) +#define ESR_ELx_EA_SHIFT (9) +#define ESR_ELx_EA (UL(1) << ESR_ELx_EA_SHIFT) +#define ESR_ELx_S1PTW_SHIFT (7) +#define ESR_ELx_S1PTW (UL(1) << ESR_ELx_S1PTW_SHIFT) + +/* Shared ISS fault status code(IFSC/DFSC) for Data/Instruction aborts */ +#define ESR_ELx_FSC (0x3F) +#define ESR_ELx_FSC_TYPE (0x3C) +#define ESR_ELx_FSC_LEVEL (0x03) +#define ESR_ELx_FSC_EXTABT (0x10) +#define ESR_ELx_FSC_MTE (0x11) +#define ESR_ELx_FSC_SERROR (0x11) +#define ESR_ELx_FSC_ACCESS (0x08) +#define ESR_ELx_FSC_FAULT (0x04) +#define ESR_ELx_FSC_PERM (0x0C) +#define ESR_ELx_FSC_SEA_TTW(n) (0x14 + (n)) +#define ESR_ELx_FSC_SECC (0x18) +#define ESR_ELx_FSC_SECC_TTW(n) (0x1c + (n)) + +/* Status codes for individual page table levels */ +#define ESR_ELx_FSC_ACCESS_L(n) (ESR_ELx_FSC_ACCESS + (n)) +#define ESR_ELx_FSC_PERM_L(n) (ESR_ELx_FSC_PERM + (n)) + +#define ESR_ELx_FSC_FAULT_nL (0x2C) +#define ESR_ELx_FSC_FAULT_L(n) (((n) < 0 ? ESR_ELx_FSC_FAULT_nL : \ + ESR_ELx_FSC_FAULT) + (n)) + +/* ISS field definitions for Data Aborts */ +#define ESR_ELx_ISV_SHIFT (24) +#define ESR_ELx_ISV (UL(1) << ESR_ELx_ISV_SHIFT) +#define ESR_ELx_SAS_SHIFT (22) +#define ESR_ELx_SAS (UL(3) << ESR_ELx_SAS_SHIFT) +#define ESR_ELx_SSE_SHIFT (21) +#define ESR_ELx_SSE (UL(1) << ESR_ELx_SSE_SHIFT) +#define ESR_ELx_SRT_SHIFT (16) +#define ESR_ELx_SRT_MASK (UL(0x1F) << ESR_ELx_SRT_SHIFT) +#define ESR_ELx_SF_SHIFT (15) +#define ESR_ELx_SF (UL(1) << ESR_ELx_SF_SHIFT) +#define ESR_ELx_AR_SHIFT (14) +#define ESR_ELx_AR (UL(1) << ESR_ELx_AR_SHIFT) +#define ESR_ELx_CM_SHIFT (8) +#define ESR_ELx_CM (UL(1) << ESR_ELx_CM_SHIFT) + +/* ISS2 field definitions for Data Aborts */ +#define ESR_ELx_TnD_SHIFT (10) +#define ESR_ELx_TnD (UL(1) << ESR_ELx_TnD_SHIFT) +#define ESR_ELx_TagAccess_SHIFT (9) +#define ESR_ELx_TagAccess (UL(1) << ESR_ELx_TagAccess_SHIFT) +#define ESR_ELx_GCS_SHIFT (8) +#define ESR_ELx_GCS (UL(1) << ESR_ELx_GCS_SHIFT) +#define ESR_ELx_Overlay_SHIFT (6) +#define ESR_ELx_Overlay (UL(1) << ESR_ELx_Overlay_SHIFT) +#define ESR_ELx_DirtyBit_SHIFT (5) +#define ESR_ELx_DirtyBit (UL(1) << ESR_ELx_DirtyBit_SHIFT) +#define ESR_ELx_Xs_SHIFT (0) +#define ESR_ELx_Xs_MASK (GENMASK_ULL(4, 0)) + +/* ISS field definitions for exceptions taken in to Hyp */ +#define ESR_ELx_FSC_ADDRSZ (0x00) +#define ESR_ELx_FSC_ADDRSZ_L(n) (ESR_ELx_FSC_ADDRSZ + (n)) +#define ESR_ELx_CV (UL(1) << 24) +#define ESR_ELx_COND_SHIFT (20) +#define ESR_ELx_COND_MASK (UL(0xF) << ESR_ELx_COND_SHIFT) +#define ESR_ELx_WFx_ISS_RN (UL(0x1F) << 5) +#define ESR_ELx_WFx_ISS_RV (UL(1) << 2) +#define ESR_ELx_WFx_ISS_TI (UL(3) << 0) +#define ESR_ELx_WFx_ISS_WFxT (UL(2) << 0) +#define ESR_ELx_WFx_ISS_WFI (UL(0) << 0) +#define ESR_ELx_WFx_ISS_WFE (UL(1) << 0) +#define ESR_ELx_xVC_IMM_MASK ((UL(1) << 16) - 1) + +#define DISR_EL1_IDS (UL(1) << 24) +/* + * DISR_EL1 and ESR_ELx share the bottom 13 bits, but the RES0 bits may mean + * different things in the future... + */ +#define DISR_EL1_ESR_MASK (ESR_ELx_AET | ESR_ELx_EA | ESR_ELx_FSC) + +/* ESR value templates for specific events */ +#define ESR_ELx_WFx_MASK (ESR_ELx_EC_MASK | \ + (ESR_ELx_WFx_ISS_TI & ~ESR_ELx_WFx_ISS_WFxT)) +#define ESR_ELx_WFx_WFI_VAL ((ESR_ELx_EC_WFx << ESR_ELx_EC_SHIFT) | \ + ESR_ELx_WFx_ISS_WFI) + +/* BRK instruction trap from AArch64 state */ +#define ESR_ELx_BRK64_ISS_COMMENT_MASK 0xffff + +/* ISS field definitions for System instruction traps */ +#define ESR_ELx_SYS64_ISS_RES0_SHIFT 22 +#define ESR_ELx_SYS64_ISS_RES0_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_RES0_SHIFT) +#define ESR_ELx_SYS64_ISS_DIR_MASK 0x1 +#define ESR_ELx_SYS64_ISS_DIR_READ 0x1 +#define ESR_ELx_SYS64_ISS_DIR_WRITE 0x0 + +#define ESR_ELx_SYS64_ISS_RT_SHIFT 5 +#define ESR_ELx_SYS64_ISS_RT_MASK (UL(0x1f) << ESR_ELx_SYS64_ISS_RT_SHIFT) +#define ESR_ELx_SYS64_ISS_CRM_SHIFT 1 +#define ESR_ELx_SYS64_ISS_CRM_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRM_SHIFT) +#define ESR_ELx_SYS64_ISS_CRN_SHIFT 10 +#define ESR_ELx_SYS64_ISS_CRN_MASK (UL(0xf) << ESR_ELx_SYS64_ISS_CRN_SHIFT) +#define ESR_ELx_SYS64_ISS_OP1_SHIFT 14 +#define ESR_ELx_SYS64_ISS_OP1_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP1_SHIFT) +#define ESR_ELx_SYS64_ISS_OP2_SHIFT 17 +#define ESR_ELx_SYS64_ISS_OP2_MASK (UL(0x7) << ESR_ELx_SYS64_ISS_OP2_SHIFT) +#define ESR_ELx_SYS64_ISS_OP0_SHIFT 20 +#define ESR_ELx_SYS64_ISS_OP0_MASK (UL(0x3) << ESR_ELx_SYS64_ISS_OP0_SHIFT) +#define ESR_ELx_SYS64_ISS_SYS_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \ + ESR_ELx_SYS64_ISS_OP1_MASK | \ + ESR_ELx_SYS64_ISS_OP2_MASK | \ + ESR_ELx_SYS64_ISS_CRN_MASK | \ + ESR_ELx_SYS64_ISS_CRM_MASK) +#define ESR_ELx_SYS64_ISS_SYS_VAL(op0, op1, op2, crn, crm) \ + (((op0) << ESR_ELx_SYS64_ISS_OP0_SHIFT) | \ + ((op1) << ESR_ELx_SYS64_ISS_OP1_SHIFT) | \ + ((op2) << ESR_ELx_SYS64_ISS_OP2_SHIFT) | \ + ((crn) << ESR_ELx_SYS64_ISS_CRN_SHIFT) | \ + ((crm) << ESR_ELx_SYS64_ISS_CRM_SHIFT)) + +#define ESR_ELx_SYS64_ISS_SYS_OP_MASK (ESR_ELx_SYS64_ISS_SYS_MASK | \ + ESR_ELx_SYS64_ISS_DIR_MASK) +#define ESR_ELx_SYS64_ISS_RT(esr) \ + (((esr) & ESR_ELx_SYS64_ISS_RT_MASK) >> ESR_ELx_SYS64_ISS_RT_SHIFT) +/* + * User space cache operations have the following sysreg encoding + * in System instructions. + * op0=1, op1=3, op2=1, crn=7, crm={ 5, 10, 11, 12, 13, 14 }, WRITE (L=0) + */ +#define ESR_ELx_SYS64_ISS_CRM_DC_CIVAC 14 +#define ESR_ELx_SYS64_ISS_CRM_DC_CVADP 13 +#define ESR_ELx_SYS64_ISS_CRM_DC_CVAP 12 +#define ESR_ELx_SYS64_ISS_CRM_DC_CVAU 11 +#define ESR_ELx_SYS64_ISS_CRM_DC_CVAC 10 +#define ESR_ELx_SYS64_ISS_CRM_IC_IVAU 5 + +#define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \ + ESR_ELx_SYS64_ISS_OP1_MASK | \ + ESR_ELx_SYS64_ISS_OP2_MASK | \ + ESR_ELx_SYS64_ISS_CRN_MASK | \ + ESR_ELx_SYS64_ISS_DIR_MASK) +#define ESR_ELx_SYS64_ISS_EL0_CACHE_OP_VAL \ + (ESR_ELx_SYS64_ISS_SYS_VAL(1, 3, 1, 7, 0) | \ + ESR_ELx_SYS64_ISS_DIR_WRITE) +/* + * User space MRS operations which are supported for emulation + * have the following sysreg encoding in System instructions. + * op0 = 3, op1= 0, crn = 0, {crm = 0, 4-7}, READ (L = 1) + */ +#define ESR_ELx_SYS64_ISS_SYS_MRS_OP_MASK (ESR_ELx_SYS64_ISS_OP0_MASK | \ + ESR_ELx_SYS64_ISS_OP1_MASK | \ + ESR_ELx_SYS64_ISS_CRN_MASK | \ + ESR_ELx_SYS64_ISS_DIR_MASK) +#define ESR_ELx_SYS64_ISS_SYS_MRS_OP_VAL \ + (ESR_ELx_SYS64_ISS_SYS_VAL(3, 0, 0, 0, 0) | \ + ESR_ELx_SYS64_ISS_DIR_READ) + +#define ESR_ELx_SYS64_ISS_SYS_CTR ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 1, 0, 0) +#define ESR_ELx_SYS64_ISS_SYS_CTR_READ (ESR_ELx_SYS64_ISS_SYS_CTR | \ + ESR_ELx_SYS64_ISS_DIR_READ) + +#define ESR_ELx_SYS64_ISS_SYS_CNTVCT (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 2, 14, 0) | \ + ESR_ELx_SYS64_ISS_DIR_READ) + +#define ESR_ELx_SYS64_ISS_SYS_CNTVCTSS (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 6, 14, 0) | \ + ESR_ELx_SYS64_ISS_DIR_READ) + +#define ESR_ELx_SYS64_ISS_SYS_CNTFRQ (ESR_ELx_SYS64_ISS_SYS_VAL(3, 3, 0, 14, 0) | \ + ESR_ELx_SYS64_ISS_DIR_READ) + +#define esr_sys64_to_sysreg(e) \ + sys_reg((((e) & ESR_ELx_SYS64_ISS_OP0_MASK) >> \ + ESR_ELx_SYS64_ISS_OP0_SHIFT), \ + (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \ + ESR_ELx_SYS64_ISS_OP1_SHIFT), \ + (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \ + ESR_ELx_SYS64_ISS_CRN_SHIFT), \ + (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \ + ESR_ELx_SYS64_ISS_CRM_SHIFT), \ + (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \ + ESR_ELx_SYS64_ISS_OP2_SHIFT)) + +#define esr_cp15_to_sysreg(e) \ + sys_reg(3, \ + (((e) & ESR_ELx_SYS64_ISS_OP1_MASK) >> \ + ESR_ELx_SYS64_ISS_OP1_SHIFT), \ + (((e) & ESR_ELx_SYS64_ISS_CRN_MASK) >> \ + ESR_ELx_SYS64_ISS_CRN_SHIFT), \ + (((e) & ESR_ELx_SYS64_ISS_CRM_MASK) >> \ + ESR_ELx_SYS64_ISS_CRM_SHIFT), \ + (((e) & ESR_ELx_SYS64_ISS_OP2_MASK) >> \ + ESR_ELx_SYS64_ISS_OP2_SHIFT)) + +/* ISS field definitions for ERET/ERETAA/ERETAB trapping */ +#define ESR_ELx_ERET_ISS_ERET 0x2 +#define ESR_ELx_ERET_ISS_ERETA 0x1 + +/* + * ISS field definitions for floating-point exception traps + * (FP_EXC_32/FP_EXC_64). + * + * (The FPEXC_* constants are used instead for common bits.) + */ + +#define ESR_ELx_FP_EXC_TFV (UL(1) << 23) + +/* + * ISS field definitions for CP15 accesses + */ +#define ESR_ELx_CP15_32_ISS_DIR_MASK 0x1 +#define ESR_ELx_CP15_32_ISS_DIR_READ 0x1 +#define ESR_ELx_CP15_32_ISS_DIR_WRITE 0x0 + +#define ESR_ELx_CP15_32_ISS_RT_SHIFT 5 +#define ESR_ELx_CP15_32_ISS_RT_MASK (UL(0x1f) << ESR_ELx_CP15_32_ISS_RT_SHIFT) +#define ESR_ELx_CP15_32_ISS_CRM_SHIFT 1 +#define ESR_ELx_CP15_32_ISS_CRM_MASK (UL(0xf) << ESR_ELx_CP15_32_ISS_CRM_SHIFT) +#define ESR_ELx_CP15_32_ISS_CRN_SHIFT 10 +#define ESR_ELx_CP15_32_ISS_CRN_MASK (UL(0xf) << ESR_ELx_CP15_32_ISS_CRN_SHIFT) +#define ESR_ELx_CP15_32_ISS_OP1_SHIFT 14 +#define ESR_ELx_CP15_32_ISS_OP1_MASK (UL(0x7) << ESR_ELx_CP15_32_ISS_OP1_SHIFT) +#define ESR_ELx_CP15_32_ISS_OP2_SHIFT 17 +#define ESR_ELx_CP15_32_ISS_OP2_MASK (UL(0x7) << ESR_ELx_CP15_32_ISS_OP2_SHIFT) + +#define ESR_ELx_CP15_32_ISS_SYS_MASK (ESR_ELx_CP15_32_ISS_OP1_MASK | \ + ESR_ELx_CP15_32_ISS_OP2_MASK | \ + ESR_ELx_CP15_32_ISS_CRN_MASK | \ + ESR_ELx_CP15_32_ISS_CRM_MASK | \ + ESR_ELx_CP15_32_ISS_DIR_MASK) +#define ESR_ELx_CP15_32_ISS_SYS_VAL(op1, op2, crn, crm) \ + (((op1) << ESR_ELx_CP15_32_ISS_OP1_SHIFT) | \ + ((op2) << ESR_ELx_CP15_32_ISS_OP2_SHIFT) | \ + ((crn) << ESR_ELx_CP15_32_ISS_CRN_SHIFT) | \ + ((crm) << ESR_ELx_CP15_32_ISS_CRM_SHIFT)) + +#define ESR_ELx_CP15_64_ISS_DIR_MASK 0x1 +#define ESR_ELx_CP15_64_ISS_DIR_READ 0x1 +#define ESR_ELx_CP15_64_ISS_DIR_WRITE 0x0 + +#define ESR_ELx_CP15_64_ISS_RT_SHIFT 5 +#define ESR_ELx_CP15_64_ISS_RT_MASK (UL(0x1f) << ESR_ELx_CP15_64_ISS_RT_SHIFT) + +#define ESR_ELx_CP15_64_ISS_RT2_SHIFT 10 +#define ESR_ELx_CP15_64_ISS_RT2_MASK (UL(0x1f) << ESR_ELx_CP15_64_ISS_RT2_SHIFT) + +#define ESR_ELx_CP15_64_ISS_OP1_SHIFT 16 +#define ESR_ELx_CP15_64_ISS_OP1_MASK (UL(0xf) << ESR_ELx_CP15_64_ISS_OP1_SHIFT) +#define ESR_ELx_CP15_64_ISS_CRM_SHIFT 1 +#define ESR_ELx_CP15_64_ISS_CRM_MASK (UL(0xf) << ESR_ELx_CP15_64_ISS_CRM_SHIFT) + +#define ESR_ELx_CP15_64_ISS_SYS_VAL(op1, crm) \ + (((op1) << ESR_ELx_CP15_64_ISS_OP1_SHIFT) | \ + ((crm) << ESR_ELx_CP15_64_ISS_CRM_SHIFT)) + +#define ESR_ELx_CP15_64_ISS_SYS_MASK (ESR_ELx_CP15_64_ISS_OP1_MASK | \ + ESR_ELx_CP15_64_ISS_CRM_MASK | \ + ESR_ELx_CP15_64_ISS_DIR_MASK) + +#define ESR_ELx_CP15_64_ISS_SYS_CNTVCT (ESR_ELx_CP15_64_ISS_SYS_VAL(1, 14) | \ + ESR_ELx_CP15_64_ISS_DIR_READ) + +#define ESR_ELx_CP15_64_ISS_SYS_CNTVCTSS (ESR_ELx_CP15_64_ISS_SYS_VAL(9, 14) | \ + ESR_ELx_CP15_64_ISS_DIR_READ) + +#define ESR_ELx_CP15_32_ISS_SYS_CNTFRQ (ESR_ELx_CP15_32_ISS_SYS_VAL(0, 0, 14, 0) |\ + ESR_ELx_CP15_32_ISS_DIR_READ) + +/* + * ISS values for SME traps + */ + +#define ESR_ELx_SME_ISS_SME_DISABLED 0 +#define ESR_ELx_SME_ISS_ILL 1 +#define ESR_ELx_SME_ISS_SM_DISABLED 2 +#define ESR_ELx_SME_ISS_ZA_DISABLED 3 +#define ESR_ELx_SME_ISS_ZT_DISABLED 4 + +/* ISS field definitions for MOPS exceptions */ +#define ESR_ELx_MOPS_ISS_MEM_INST (UL(1) << 24) +#define ESR_ELx_MOPS_ISS_FROM_EPILOGUE (UL(1) << 18) +#define ESR_ELx_MOPS_ISS_WRONG_OPTION (UL(1) << 17) +#define ESR_ELx_MOPS_ISS_OPTION_A (UL(1) << 16) +#define ESR_ELx_MOPS_ISS_DESTREG(esr) (((esr) & (UL(0x1f) << 10)) >> 10) +#define ESR_ELx_MOPS_ISS_SRCREG(esr) (((esr) & (UL(0x1f) << 5)) >> 5) +#define ESR_ELx_MOPS_ISS_SIZEREG(esr) (((esr) & (UL(0x1f) << 0)) >> 0) + +#ifndef __ASSEMBLY__ +#include + +static inline unsigned long esr_brk_comment(unsigned long esr) +{ + return esr & ESR_ELx_BRK64_ISS_COMMENT_MASK; +} + +static inline bool esr_is_data_abort(unsigned long esr) +{ + const unsigned long ec = ESR_ELx_EC(esr); + + return ec == ESR_ELx_EC_DABT_LOW || ec == ESR_ELx_EC_DABT_CUR; +} + +static inline bool esr_is_cfi_brk(unsigned long esr) +{ + return ESR_ELx_EC(esr) == ESR_ELx_EC_BRK64 && + (esr_brk_comment(esr) & ~CFI_BRK_IMM_MASK) == CFI_BRK_IMM_BASE; +} + +static inline bool esr_fsc_is_translation_fault(unsigned long esr) +{ + esr = esr & ESR_ELx_FSC; + + return (esr == ESR_ELx_FSC_FAULT_L(3)) || + (esr == ESR_ELx_FSC_FAULT_L(2)) || + (esr == ESR_ELx_FSC_FAULT_L(1)) || + (esr == ESR_ELx_FSC_FAULT_L(0)) || + (esr == ESR_ELx_FSC_FAULT_L(-1)); +} + +static inline bool esr_fsc_is_permission_fault(unsigned long esr) +{ + esr = esr & ESR_ELx_FSC; + + return (esr == ESR_ELx_FSC_PERM_L(3)) || + (esr == ESR_ELx_FSC_PERM_L(2)) || + (esr == ESR_ELx_FSC_PERM_L(1)) || + (esr == ESR_ELx_FSC_PERM_L(0)); +} + +static inline bool esr_fsc_is_access_flag_fault(unsigned long esr) +{ + esr = esr & ESR_ELx_FSC; + + return (esr == ESR_ELx_FSC_ACCESS_L(3)) || + (esr == ESR_ELx_FSC_ACCESS_L(2)) || + (esr == ESR_ELx_FSC_ACCESS_L(1)) || + (esr == ESR_ELx_FSC_ACCESS_L(0)); +} + +/* Indicate whether ESR.EC==0x1A is for an ERETAx instruction */ +static inline bool esr_iss_is_eretax(unsigned long esr) +{ + return esr & ESR_ELx_ERET_ISS_ERET; +} + +/* Indicate which key is used for ERETAx (false: A-Key, true: B-Key) */ +static inline bool esr_iss_is_eretab(unsigned long esr) +{ + return esr & ESR_ELx_ERET_ISS_ERETA; +} + +const char *esr_get_class_string(unsigned long esr); +#endif /* __ASSEMBLY */ + +#endif /* __ASM_ESR_H */ -- cgit v1.2.3 From c660d334b3a54f22836955ca5255edd946771614 Mon Sep 17 00:00:00 2001 From: Oliver Upton Date: Fri, 25 Oct 2024 20:31:05 +0000 Subject: KVM: arm64: selftests: Convert to kernel's ESR terminology Drop the KVM selftests specific flavoring of ESR in favor of the kernel header. Reviewed-by: Marc Zyngier Link: https://lore.kernel.org/r/20241025203106.3529261-4-oliver.upton@linux.dev Signed-off-by: Oliver Upton --- tools/testing/selftests/kvm/aarch64/debug-exceptions.c | 10 +++++----- tools/testing/selftests/kvm/aarch64/no-vgic-v3.c | 2 +- tools/testing/selftests/kvm/aarch64/page_fault_test.c | 4 ++-- tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c | 12 ++++++------ tools/testing/selftests/kvm/include/aarch64/processor.h | 15 ++------------- tools/testing/selftests/kvm/lib/aarch64/processor.c | 6 +++--- 6 files changed, 19 insertions(+), 30 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c index 2582c49e525a..ff7a949fc96a 100644 --- a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c +++ b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c @@ -433,15 +433,15 @@ static void test_guest_debug_exceptions(uint8_t bpn, uint8_t wpn, uint8_t ctx_bp vcpu_init_descriptor_tables(vcpu); vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, - ESR_EC_BRK_INS, guest_sw_bp_handler); + ESR_ELx_EC_BRK64, guest_sw_bp_handler); vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, - ESR_EC_HW_BP_CURRENT, guest_hw_bp_handler); + ESR_ELx_EC_BREAKPT_CUR, guest_hw_bp_handler); vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, - ESR_EC_WP_CURRENT, guest_wp_handler); + ESR_ELx_EC_WATCHPT_CUR, guest_wp_handler); vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, - ESR_EC_SSTEP_CURRENT, guest_ss_handler); + ESR_ELx_EC_SOFTSTP_CUR, guest_ss_handler); vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, - ESR_EC_SVC64, guest_svc_handler); + ESR_ELx_EC_SVC64, guest_svc_handler); /* Specify bpn/wpn/ctx_bpn to be tested */ vcpu_args_set(vcpu, 3, bpn, wpn, ctx_bpn); diff --git a/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c b/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c index 943d65fc6b0b..58304bbc2036 100644 --- a/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c +++ b/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c @@ -150,7 +150,7 @@ static void test_guest_no_gicv3(void) vcpu_init_descriptor_tables(vcpu); vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, - ESR_EC_UNKNOWN, guest_undef_handler); + ESR_ELx_EC_UNKNOWN, guest_undef_handler); test_run_vcpu(vcpu); diff --git a/tools/testing/selftests/kvm/aarch64/page_fault_test.c b/tools/testing/selftests/kvm/aarch64/page_fault_test.c index d29b08198b42..ec33a8f9c908 100644 --- a/tools/testing/selftests/kvm/aarch64/page_fault_test.c +++ b/tools/testing/selftests/kvm/aarch64/page_fault_test.c @@ -544,9 +544,9 @@ static void setup_abort_handlers(struct kvm_vm *vm, struct kvm_vcpu *vcpu, vcpu_init_descriptor_tables(vcpu); vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, - ESR_EC_DABT, no_dabt_handler); + ESR_ELx_EC_DABT_CUR, no_dabt_handler); vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, - ESR_EC_IABT, no_iabt_handler); + ESR_ELx_EC_IABT_CUR, no_iabt_handler); } static void setup_gva_maps(struct kvm_vm *vm) diff --git a/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c b/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c index d31b9f64ba14..f9c0c86d7e85 100644 --- a/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c +++ b/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c @@ -300,7 +300,7 @@ static void guest_sync_handler(struct ex_regs *regs) uint64_t esr, ec; esr = read_sysreg(esr_el1); - ec = (esr >> ESR_EC_SHIFT) & ESR_EC_MASK; + ec = ESR_ELx_EC(esr); __GUEST_ASSERT(expected_ec == ec, "PC: 0x%lx; ESR: 0x%lx; EC: 0x%lx; EC expected: 0x%lx", @@ -338,10 +338,10 @@ static void test_access_invalid_pmc_regs(struct pmc_accessor *acc, int pmc_idx) * Reading/writing the event count/type registers should cause * an UNDEFINED exception. */ - TEST_EXCEPTION(ESR_EC_UNKNOWN, acc->read_cntr(pmc_idx)); - TEST_EXCEPTION(ESR_EC_UNKNOWN, acc->write_cntr(pmc_idx, 0)); - TEST_EXCEPTION(ESR_EC_UNKNOWN, acc->read_typer(pmc_idx)); - TEST_EXCEPTION(ESR_EC_UNKNOWN, acc->write_typer(pmc_idx, 0)); + TEST_EXCEPTION(ESR_ELx_EC_UNKNOWN, acc->read_cntr(pmc_idx)); + TEST_EXCEPTION(ESR_ELx_EC_UNKNOWN, acc->write_cntr(pmc_idx, 0)); + TEST_EXCEPTION(ESR_ELx_EC_UNKNOWN, acc->read_typer(pmc_idx)); + TEST_EXCEPTION(ESR_ELx_EC_UNKNOWN, acc->write_typer(pmc_idx, 0)); /* * The bit corresponding to the (unimplemented) counter in * {PMCNTEN,PMINTEN,PMOVS}{SET,CLR} registers should be RAZ. @@ -425,7 +425,7 @@ static void create_vpmu_vm(void *guest_code) vpmu_vm.vm = vm_create(1); vm_init_descriptor_tables(vpmu_vm.vm); - for (ec = 0; ec < ESR_EC_NUM; ec++) { + for (ec = 0; ec < ESR_ELx_EC_MAX + 1; ec++) { vm_install_sync_handler(vpmu_vm.vm, VECTOR_SYNC_CURRENT, ec, guest_sync_handler); } diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h b/tools/testing/selftests/kvm/include/aarch64/processor.h index de977d131082..1e8d0d531fbd 100644 --- a/tools/testing/selftests/kvm/include/aarch64/processor.h +++ b/tools/testing/selftests/kvm/include/aarch64/processor.h @@ -12,6 +12,8 @@ #include #include +#include +#include #include @@ -100,19 +102,6 @@ enum { (v) == VECTOR_SYNC_LOWER_64 || \ (v) == VECTOR_SYNC_LOWER_32) -#define ESR_EC_NUM 64 -#define ESR_EC_SHIFT 26 -#define ESR_EC_MASK (ESR_EC_NUM - 1) - -#define ESR_EC_UNKNOWN 0x0 -#define ESR_EC_SVC64 0x15 -#define ESR_EC_IABT 0x21 -#define ESR_EC_DABT 0x25 -#define ESR_EC_HW_BP_CURRENT 0x31 -#define ESR_EC_SSTEP_CURRENT 0x33 -#define ESR_EC_WP_CURRENT 0x35 -#define ESR_EC_BRK_INS 0x3c - /* Access flag */ #define PTE_AF (1ULL << 10) diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c index fe4dc3693112..698e34f39241 100644 --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c @@ -450,7 +450,7 @@ void assert_on_unhandled_exception(struct kvm_vcpu *vcpu) } struct handlers { - handler_fn exception_handlers[VECTOR_NUM][ESR_EC_NUM]; + handler_fn exception_handlers[VECTOR_NUM][ESR_ELx_EC_MAX + 1]; }; void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) @@ -469,7 +469,7 @@ void route_exception(struct ex_regs *regs, int vector) switch (vector) { case VECTOR_SYNC_CURRENT: case VECTOR_SYNC_LOWER_64: - ec = (read_sysreg(esr_el1) >> ESR_EC_SHIFT) & ESR_EC_MASK; + ec = ESR_ELx_EC(read_sysreg(esr_el1)); valid_ec = true; break; case VECTOR_IRQ_CURRENT: @@ -508,7 +508,7 @@ void vm_install_sync_handler(struct kvm_vm *vm, int vector, int ec, assert(VECTOR_IS_SYNC(vector)); assert(vector < VECTOR_NUM); - assert(ec < ESR_EC_NUM); + assert(ec <= ESR_ELx_EC_MAX); handlers->exception_handlers[vector][ec] = handler; } -- cgit v1.2.3 From 3eb09a3e028e26fd26bc132c7aa0577f00de2d05 Mon Sep 17 00:00:00 2001 From: Oliver Upton Date: Fri, 25 Oct 2024 20:31:06 +0000 Subject: KVM: arm64: selftests: Add tests for MMIO external abort injection Test that the plumbing exposed to userspace for injecting aborts in response to unexpected MMIO works as intended in two different flavors: - A 'normal' MMIO instruction (i.e. ESR_ELx.ISV=1) - An ISV=0 MMIO instruction with/without KVM_CAP_ARM_NISV_TO_USER enabled Reviewed-by: Marc Zyngier Link: https://lore.kernel.org/r/20241025203106.3529261-5-oliver.upton@linux.dev Signed-off-by: Oliver Upton --- tools/testing/selftests/kvm/Makefile | 1 + tools/testing/selftests/kvm/aarch64/mmio_abort.c | 159 +++++++++++++++++++++++ 2 files changed, 160 insertions(+) create mode 100644 tools/testing/selftests/kvm/aarch64/mmio_abort.c (limited to 'tools') diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 960cf6a77198..98957a99ead6 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -156,6 +156,7 @@ TEST_GEN_PROGS_aarch64 += aarch64/aarch32_id_regs TEST_GEN_PROGS_aarch64 += aarch64/arch_timer_edge_cases TEST_GEN_PROGS_aarch64 += aarch64/debug-exceptions TEST_GEN_PROGS_aarch64 += aarch64/hypercalls +TEST_GEN_PROGS_aarch64 += aarch64/mmio_abort TEST_GEN_PROGS_aarch64 += aarch64/page_fault_test TEST_GEN_PROGS_aarch64 += aarch64/psci_test TEST_GEN_PROGS_aarch64 += aarch64/set_id_regs diff --git a/tools/testing/selftests/kvm/aarch64/mmio_abort.c b/tools/testing/selftests/kvm/aarch64/mmio_abort.c new file mode 100644 index 000000000000..8b7a80a51b1c --- /dev/null +++ b/tools/testing/selftests/kvm/aarch64/mmio_abort.c @@ -0,0 +1,159 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * mmio_abort - Tests for userspace MMIO abort injection + * + * Copyright (c) 2024 Google LLC + */ +#include "processor.h" +#include "test_util.h" + +#define MMIO_ADDR 0x8000000ULL + +static u64 expected_abort_pc; + +static void expect_sea_handler(struct ex_regs *regs) +{ + u64 esr = read_sysreg(esr_el1); + + GUEST_ASSERT_EQ(regs->pc, expected_abort_pc); + GUEST_ASSERT_EQ(ESR_ELx_EC(esr), ESR_ELx_EC_DABT_CUR); + GUEST_ASSERT_EQ(esr & ESR_ELx_FSC_TYPE, ESR_ELx_FSC_EXTABT); + + GUEST_DONE(); +} + +static void unexpected_dabt_handler(struct ex_regs *regs) +{ + GUEST_FAIL("Unexpected data abort at PC: %lx\n", regs->pc); +} + +static struct kvm_vm *vm_create_with_dabt_handler(struct kvm_vcpu **vcpu, void *guest_code, + handler_fn dabt_handler) +{ + struct kvm_vm *vm = vm_create_with_one_vcpu(vcpu, guest_code); + + vm_init_descriptor_tables(vm); + vcpu_init_descriptor_tables(*vcpu); + vm_install_sync_handler(vm, VECTOR_SYNC_CURRENT, ESR_ELx_EC_DABT_CUR, dabt_handler); + + virt_map(vm, MMIO_ADDR, MMIO_ADDR, 1); + + return vm; +} + +static void vcpu_inject_extabt(struct kvm_vcpu *vcpu) +{ + struct kvm_vcpu_events events = {}; + + events.exception.ext_dabt_pending = true; + vcpu_events_set(vcpu, &events); +} + +static void vcpu_run_expect_done(struct kvm_vcpu *vcpu) +{ + struct ucall uc; + + vcpu_run(vcpu); + switch (get_ucall(vcpu, &uc)) { + case UCALL_ABORT: + REPORT_GUEST_ASSERT(uc); + break; + case UCALL_DONE: + break; + default: + TEST_FAIL("Unexpected ucall: %lu", uc.cmd); + } +} + +extern char test_mmio_abort_insn; + +static void test_mmio_abort_guest(void) +{ + WRITE_ONCE(expected_abort_pc, (u64)&test_mmio_abort_insn); + + asm volatile("test_mmio_abort_insn:\n\t" + "ldr x0, [%0]\n\t" + : : "r" (MMIO_ADDR) : "x0", "memory"); + + GUEST_FAIL("MMIO instruction should not retire"); +} + +/* + * Test that KVM doesn't complete MMIO emulation when userspace has made an + * external abort pending for the instruction. + */ +static void test_mmio_abort(void) +{ + struct kvm_vcpu *vcpu; + struct kvm_vm *vm = vm_create_with_dabt_handler(&vcpu, test_mmio_abort_guest, + expect_sea_handler); + struct kvm_run *run = vcpu->run; + + vcpu_run(vcpu); + TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_MMIO); + TEST_ASSERT_EQ(run->mmio.phys_addr, MMIO_ADDR); + TEST_ASSERT_EQ(run->mmio.len, sizeof(unsigned long)); + TEST_ASSERT(!run->mmio.is_write, "Expected MMIO read"); + + vcpu_inject_extabt(vcpu); + vcpu_run_expect_done(vcpu); + kvm_vm_free(vm); +} + +extern char test_mmio_nisv_insn; + +static void test_mmio_nisv_guest(void) +{ + WRITE_ONCE(expected_abort_pc, (u64)&test_mmio_nisv_insn); + + asm volatile("test_mmio_nisv_insn:\n\t" + "ldr x0, [%0], #8\n\t" + : : "r" (MMIO_ADDR) : "x0", "memory"); + + GUEST_FAIL("MMIO instruction should not retire"); +} + +/* + * Test that the KVM_RUN ioctl fails for ESR_EL2.ISV=0 MMIO aborts if userspace + * hasn't enabled KVM_CAP_ARM_NISV_TO_USER. + */ +static void test_mmio_nisv(void) +{ + struct kvm_vcpu *vcpu; + struct kvm_vm *vm = vm_create_with_dabt_handler(&vcpu, test_mmio_nisv_guest, + unexpected_dabt_handler); + + TEST_ASSERT(_vcpu_run(vcpu), "Expected nonzero return code from KVM_RUN"); + TEST_ASSERT_EQ(errno, ENOSYS); + + kvm_vm_free(vm); +} + +/* + * Test that ESR_EL2.ISV=0 MMIO aborts reach userspace and that an injected SEA + * reaches the guest. + */ +static void test_mmio_nisv_abort(void) +{ + struct kvm_vcpu *vcpu; + struct kvm_vm *vm = vm_create_with_dabt_handler(&vcpu, test_mmio_nisv_guest, + expect_sea_handler); + struct kvm_run *run = vcpu->run; + + vm_enable_cap(vm, KVM_CAP_ARM_NISV_TO_USER, 1); + + vcpu_run(vcpu); + TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_ARM_NISV); + TEST_ASSERT_EQ(run->arm_nisv.fault_ipa, MMIO_ADDR); + + vcpu_inject_extabt(vcpu); + vcpu_run_expect_done(vcpu); + kvm_vm_free(vm); +} + +int main(void) +{ + test_mmio_abort(); + test_mmio_nisv(); + test_mmio_nisv_abort(); +} -- cgit v1.2.3 From 0bcceb1f51c77f6b98a7aab00847ed340bf36e35 Mon Sep 17 00:00:00 2001 From: Steve Sistare Date: Fri, 25 Oct 2024 06:11:59 -0700 Subject: iommufd: Selftest coverage for IOMMU_IOAS_MAP_FILE Add test cases to exercise IOMMU_IOAS_MAP_FILE. Link: https://patch.msgid.link/r/1729861919-234514-10-git-send-email-steven.sistare@oracle.com Signed-off-by: Steve Sistare Reviewed-by: Nicolin Chen Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe --- tools/testing/selftests/iommu/iommufd.c | 124 ++++++++++++++++++++--- tools/testing/selftests/iommu/iommufd_fail_nth.c | 39 +++++++ tools/testing/selftests/iommu/iommufd_utils.h | 57 +++++++++++ 3 files changed, 205 insertions(+), 15 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 4927b9add5ad..88b92bb69756 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only /* Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES */ +#include #include #include #include @@ -49,6 +50,9 @@ static __attribute__((constructor)) void setup_sizes(void) vrc = mmap(buffer, BUFFER_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0); assert(vrc == buffer); + + mfd_buffer = memfd_mmap(BUFFER_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, + &mfd); } FIXTURE(iommufd) @@ -128,6 +132,7 @@ TEST_F(iommufd, cmd_length) TEST_LENGTH(iommu_ioas_unmap, IOMMU_IOAS_UNMAP, length); TEST_LENGTH(iommu_option, IOMMU_OPTION, val64); TEST_LENGTH(iommu_vfio_ioas, IOMMU_VFIO_IOAS, __reserved); + TEST_LENGTH(iommu_ioas_map_file, IOMMU_IOAS_MAP_FILE, iova); #undef TEST_LENGTH } @@ -1372,6 +1377,7 @@ FIXTURE_VARIANT(iommufd_mock_domain) { unsigned int mock_domains; bool hugepages; + bool file; }; FIXTURE_SETUP(iommufd_mock_domain) @@ -1410,26 +1416,45 @@ FIXTURE_VARIANT_ADD(iommufd_mock_domain, one_domain) { .mock_domains = 1, .hugepages = false, + .file = false, }; FIXTURE_VARIANT_ADD(iommufd_mock_domain, two_domains) { .mock_domains = 2, .hugepages = false, + .file = false, }; FIXTURE_VARIANT_ADD(iommufd_mock_domain, one_domain_hugepage) { .mock_domains = 1, .hugepages = true, + .file = false, }; FIXTURE_VARIANT_ADD(iommufd_mock_domain, two_domains_hugepage) { .mock_domains = 2, .hugepages = true, + .file = false, +}; + +FIXTURE_VARIANT_ADD(iommufd_mock_domain, one_domain_file) +{ + .mock_domains = 1, + .hugepages = false, + .file = true, +}; + +FIXTURE_VARIANT_ADD(iommufd_mock_domain, one_domain_file_hugepage) +{ + .mock_domains = 1, + .hugepages = true, + .file = true, }; + /* Have the kernel check that the user pages made it to the iommu_domain */ #define check_mock_iova(_ptr, _iova, _length) \ ({ \ @@ -1455,7 +1480,10 @@ FIXTURE_VARIANT_ADD(iommufd_mock_domain, two_domains_hugepage) } \ }) -TEST_F(iommufd_mock_domain, basic) +static void +test_basic_mmap(struct __test_metadata *_metadata, + struct _test_data_iommufd_mock_domain *self, + const struct _fixture_variant_iommufd_mock_domain *variant) { size_t buf_size = self->mmap_buf_size; uint8_t *buf; @@ -1478,6 +1506,40 @@ TEST_F(iommufd_mock_domain, basic) test_err_ioctl_ioas_map(EFAULT, buf, buf_size, &iova); } +static void +test_basic_file(struct __test_metadata *_metadata, + struct _test_data_iommufd_mock_domain *self, + const struct _fixture_variant_iommufd_mock_domain *variant) +{ + size_t buf_size = self->mmap_buf_size; + uint8_t *buf; + __u64 iova; + int mfd_tmp; + int prot = PROT_READ | PROT_WRITE; + + /* Simple one page map */ + test_ioctl_ioas_map_file(mfd, 0, PAGE_SIZE, &iova); + check_mock_iova(mfd_buffer, iova, PAGE_SIZE); + + buf = memfd_mmap(buf_size, prot, MAP_SHARED, &mfd_tmp); + ASSERT_NE(MAP_FAILED, buf); + + test_err_ioctl_ioas_map_file(EINVAL, mfd_tmp, 0, buf_size + 1, &iova); + + ASSERT_EQ(0, ftruncate(mfd_tmp, 0)); + test_err_ioctl_ioas_map_file(EINVAL, mfd_tmp, 0, buf_size, &iova); + + close(mfd_tmp); +} + +TEST_F(iommufd_mock_domain, basic) +{ + if (variant->file) + test_basic_file(_metadata, self, variant); + else + test_basic_mmap(_metadata, self, variant); +} + TEST_F(iommufd_mock_domain, ro_unshare) { uint8_t *buf; @@ -1513,9 +1575,13 @@ TEST_F(iommufd_mock_domain, all_aligns) unsigned int start; unsigned int end; uint8_t *buf; + int prot = PROT_READ | PROT_WRITE; + int mfd; - buf = mmap(0, buf_size, PROT_READ | PROT_WRITE, self->mmap_flags, -1, - 0); + if (variant->file) + buf = memfd_mmap(buf_size, prot, MAP_SHARED, &mfd); + else + buf = mmap(0, buf_size, prot, self->mmap_flags, -1, 0); ASSERT_NE(MAP_FAILED, buf); check_refs(buf, buf_size, 0); @@ -1532,7 +1598,12 @@ TEST_F(iommufd_mock_domain, all_aligns) size_t length = end - start; __u64 iova; - test_ioctl_ioas_map(buf + start, length, &iova); + if (variant->file) { + test_ioctl_ioas_map_file(mfd, start, length, + &iova); + } else { + test_ioctl_ioas_map(buf + start, length, &iova); + } check_mock_iova(buf + start, iova, length); check_refs(buf + start / PAGE_SIZE * PAGE_SIZE, end / PAGE_SIZE * PAGE_SIZE - @@ -1544,6 +1615,8 @@ TEST_F(iommufd_mock_domain, all_aligns) } check_refs(buf, buf_size, 0); ASSERT_EQ(0, munmap(buf, buf_size)); + if (variant->file) + close(mfd); } TEST_F(iommufd_mock_domain, all_aligns_copy) @@ -1554,9 +1627,13 @@ TEST_F(iommufd_mock_domain, all_aligns_copy) unsigned int start; unsigned int end; uint8_t *buf; + int prot = PROT_READ | PROT_WRITE; + int mfd; - buf = mmap(0, buf_size, PROT_READ | PROT_WRITE, self->mmap_flags, -1, - 0); + if (variant->file) + buf = memfd_mmap(buf_size, prot, MAP_SHARED, &mfd); + else + buf = mmap(0, buf_size, prot, self->mmap_flags, -1, 0); ASSERT_NE(MAP_FAILED, buf); check_refs(buf, buf_size, 0); @@ -1575,7 +1652,12 @@ TEST_F(iommufd_mock_domain, all_aligns_copy) uint32_t mock_stdev_id; __u64 iova; - test_ioctl_ioas_map(buf + start, length, &iova); + if (variant->file) { + test_ioctl_ioas_map_file(mfd, start, length, + &iova); + } else { + test_ioctl_ioas_map(buf + start, length, &iova); + } /* Add and destroy a domain while the area exists */ old_id = self->hwpt_ids[1]; @@ -1596,15 +1678,18 @@ TEST_F(iommufd_mock_domain, all_aligns_copy) } check_refs(buf, buf_size, 0); ASSERT_EQ(0, munmap(buf, buf_size)); + if (variant->file) + close(mfd); } TEST_F(iommufd_mock_domain, user_copy) { + void *buf = variant->file ? mfd_buffer : buffer; struct iommu_test_cmd access_cmd = { .size = sizeof(access_cmd), .op = IOMMU_TEST_OP_ACCESS_PAGES, .access_pages = { .length = BUFFER_SIZE, - .uptr = (uintptr_t)buffer }, + .uptr = (uintptr_t)buf }, }; struct iommu_ioas_copy copy_cmd = { .size = sizeof(copy_cmd), @@ -1623,9 +1708,13 @@ TEST_F(iommufd_mock_domain, user_copy) /* Pin the pages in an IOAS with no domains then copy to an IOAS with domains */ test_ioctl_ioas_alloc(&ioas_id); - test_ioctl_ioas_map_id(ioas_id, buffer, BUFFER_SIZE, - ©_cmd.src_iova); - + if (variant->file) { + test_ioctl_ioas_map_id_file(ioas_id, mfd, 0, BUFFER_SIZE, + ©_cmd.src_iova); + } else { + test_ioctl_ioas_map_id(ioas_id, buf, BUFFER_SIZE, + ©_cmd.src_iova); + } test_cmd_create_access(ioas_id, &access_cmd.id, MOCK_FLAGS_ACCESS_CREATE_NEEDS_PIN_PAGES); @@ -1635,12 +1724,17 @@ TEST_F(iommufd_mock_domain, user_copy) &access_cmd)); copy_cmd.src_ioas_id = ioas_id; ASSERT_EQ(0, ioctl(self->fd, IOMMU_IOAS_COPY, ©_cmd)); - check_mock_iova(buffer, MOCK_APERTURE_START, BUFFER_SIZE); + check_mock_iova(buf, MOCK_APERTURE_START, BUFFER_SIZE); /* Now replace the ioas with a new one */ test_ioctl_ioas_alloc(&new_ioas_id); - test_ioctl_ioas_map_id(new_ioas_id, buffer, BUFFER_SIZE, - ©_cmd.src_iova); + if (variant->file) { + test_ioctl_ioas_map_id_file(new_ioas_id, mfd, 0, BUFFER_SIZE, + ©_cmd.src_iova); + } else { + test_ioctl_ioas_map_id(new_ioas_id, buf, BUFFER_SIZE, + ©_cmd.src_iova); + } test_cmd_access_replace_ioas(access_cmd.id, new_ioas_id); /* Destroy the old ioas and cleanup copied mapping */ @@ -1654,7 +1748,7 @@ TEST_F(iommufd_mock_domain, user_copy) &access_cmd)); copy_cmd.src_ioas_id = new_ioas_id; ASSERT_EQ(0, ioctl(self->fd, IOMMU_IOAS_COPY, ©_cmd)); - check_mock_iova(buffer, MOCK_APERTURE_START, BUFFER_SIZE); + check_mock_iova(buf, MOCK_APERTURE_START, BUFFER_SIZE); test_cmd_destroy_access_pages( access_cmd.id, access_cmd.access_pages.out_access_pages_id); diff --git a/tools/testing/selftests/iommu/iommufd_fail_nth.c b/tools/testing/selftests/iommu/iommufd_fail_nth.c index c5d5e69452b0..2d7d01638be8 100644 --- a/tools/testing/selftests/iommu/iommufd_fail_nth.c +++ b/tools/testing/selftests/iommu/iommufd_fail_nth.c @@ -47,6 +47,9 @@ static __attribute__((constructor)) void setup_buffer(void) buffer = mmap(0, BUFFER_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); + + mfd_buffer = memfd_mmap(BUFFER_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, + &mfd); } /* @@ -331,6 +334,42 @@ TEST_FAIL_NTH(basic_fail_nth, map_domain) return 0; } +/* iopt_area_fill_domains() and iopt_area_fill_domain() */ +TEST_FAIL_NTH(basic_fail_nth, map_file_domain) +{ + uint32_t ioas_id; + __u32 stdev_id; + __u32 hwpt_id; + __u64 iova; + + self->fd = open("/dev/iommu", O_RDWR); + if (self->fd == -1) + return -1; + + if (_test_ioctl_ioas_alloc(self->fd, &ioas_id)) + return -1; + + if (_test_ioctl_set_temp_memory_limit(self->fd, 32)) + return -1; + + fail_nth_enable(); + + if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, &hwpt_id, NULL)) + return -1; + + if (_test_ioctl_ioas_map_file(self->fd, ioas_id, mfd, 0, 262144, &iova, + IOMMU_IOAS_MAP_WRITEABLE | + IOMMU_IOAS_MAP_READABLE)) + return -1; + + if (_test_ioctl_destroy(self->fd, stdev_id)) + return -1; + + if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, &hwpt_id, NULL)) + return -1; + return 0; +} + TEST_FAIL_NTH(basic_fail_nth, map_two_domains) { uint32_t ioas_id; diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 40f6f14ce136..6a11c26370f3 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -40,12 +40,28 @@ static inline bool test_bit(unsigned int nr, unsigned long *addr) static void *buffer; static unsigned long BUFFER_SIZE; +static void *mfd_buffer; +static int mfd; + static unsigned long PAGE_SIZE; #define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER)) #define offsetofend(TYPE, MEMBER) \ (offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER)) +static inline void *memfd_mmap(size_t length, int prot, int flags, int *mfd_p) +{ + int mfd_flags = (flags & MAP_HUGETLB) ? MFD_HUGETLB : 0; + int mfd = memfd_create("buffer", mfd_flags); + + if (mfd <= 0) + return MAP_FAILED; + if (ftruncate(mfd, length)) + return MAP_FAILED; + *mfd_p = mfd; + return mmap(0, length, prot, flags, mfd, 0); +} + /* * Have the kernel check the refcount on pages. I don't know why a freshly * mmap'd anon non-compound page starts out with a ref of 3 @@ -589,6 +605,47 @@ static int _test_ioctl_ioas_unmap(int fd, unsigned int ioas_id, uint64_t iova, EXPECT_ERRNO(_errno, _test_ioctl_ioas_unmap(self->fd, self->ioas_id, \ iova, length, NULL)) +static int _test_ioctl_ioas_map_file(int fd, unsigned int ioas_id, int mfd, + size_t start, size_t length, __u64 *iova, + unsigned int flags) +{ + struct iommu_ioas_map_file cmd = { + .size = sizeof(cmd), + .flags = flags, + .ioas_id = ioas_id, + .fd = mfd, + .start = start, + .length = length, + }; + int ret; + + if (flags & IOMMU_IOAS_MAP_FIXED_IOVA) + cmd.iova = *iova; + + ret = ioctl(fd, IOMMU_IOAS_MAP_FILE, &cmd); + *iova = cmd.iova; + return ret; +} + +#define test_ioctl_ioas_map_file(mfd, start, length, iova_p) \ + ASSERT_EQ(0, \ + _test_ioctl_ioas_map_file( \ + self->fd, self->ioas_id, mfd, start, length, iova_p, \ + IOMMU_IOAS_MAP_WRITEABLE | IOMMU_IOAS_MAP_READABLE)) + +#define test_err_ioctl_ioas_map_file(_errno, mfd, start, length, iova_p) \ + EXPECT_ERRNO( \ + _errno, \ + _test_ioctl_ioas_map_file( \ + self->fd, self->ioas_id, mfd, start, length, iova_p, \ + IOMMU_IOAS_MAP_WRITEABLE | IOMMU_IOAS_MAP_READABLE)) + +#define test_ioctl_ioas_map_id_file(ioas_id, mfd, start, length, iova_p) \ + ASSERT_EQ(0, \ + _test_ioctl_ioas_map_file( \ + self->fd, ioas_id, mfd, start, length, iova_p, \ + IOMMU_IOAS_MAP_WRITEABLE | IOMMU_IOAS_MAP_READABLE)) + static int _test_ioctl_set_temp_memory_limit(int fd, unsigned int limit) { struct iommu_test_cmd memlimit_cmd = { -- cgit v1.2.3 From 5ce42b5de461c3154f61a023b191dd6b77ee66c0 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:00 -0700 Subject: tools subcmd: Add non-waitpid check_if_command_finished() Using waitpid can cause stdout/stderr of the child process to be lost. Use Linux's /prod//status file to determine if the process has reached the zombie state. Use the 'status' file rather than 'stat' to avoid issues around skipping the process name. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-2-irogers@google.com Signed-off-by: Namhyung Kim --- tools/lib/subcmd/run-command.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'tools') diff --git a/tools/lib/subcmd/run-command.c b/tools/lib/subcmd/run-command.c index 4e3a557a2f37..0a764c25c384 100644 --- a/tools/lib/subcmd/run-command.c +++ b/tools/lib/subcmd/run-command.c @@ -2,6 +2,7 @@ #include #include #include +#include #include #include #include @@ -217,8 +218,40 @@ static int wait_or_whine(struct child_process *cmd, bool block) int check_if_command_finished(struct child_process *cmd) { +#ifdef __linux__ + char filename[FILENAME_MAX + 12]; + char status_line[256]; + FILE *status_file; + + /* + * Check by reading /proc//status as calling waitpid causes + * stdout/stderr to be closed and data lost. + */ + sprintf(filename, "/proc/%d/status", cmd->pid); + status_file = fopen(filename, "r"); + if (status_file == NULL) { + /* Open failed assume finish_command was called. */ + return true; + } + while (fgets(status_line, sizeof(status_line), status_file) != NULL) { + char *p; + + if (strncmp(status_line, "State:", 6)) + continue; + + fclose(status_file); + p = status_line + 6; + while (isspace(*p)) + p++; + return *p == 'Z' ? 1 : 0; + } + /* Read failed assume finish_command was called. */ + fclose(status_file); + return 1; +#else wait_or_whine(cmd, /*block=*/false); return cmd->finished; +#endif } int finish_command(struct child_process *cmd) -- cgit v1.2.3 From 0e036dcad4e62b89f8df3e41402babb9345521af Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:01 -0700 Subject: perf test: Display number of active running tests Before polling or sleeping to wait for a test to complete, print out ": Running ( active)" where the number of active tests is determined by iterating over the tests and seeing which return false for check_if_command_finished. The line erasing and printing out only occur if the number of runnings tests changes to avoid the line flickering excessively. Knowing tests are running allows a user to know a test is running and in parallel mode how many of the tests are waiting to complete. If color mode is disabled then avoid displaying the "Running" message as deleting the line isn't reliable. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-3-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 93 +++++++++++++++++++++++++++-------------- tools/perf/util/color.h | 1 + 2 files changed, 63 insertions(+), 31 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 7d27e30d9b2d..57d2e9e03fbc 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -245,7 +245,10 @@ static int run_test_child(struct child_process *process) return -err; } -static int print_test_result(struct test_suite *t, int i, int subtest, int result, int width) +#define TEST_RUNNING -3 + +static int print_test_result(struct test_suite *t, int i, int subtest, int result, int width, + int running) { if (has_subtests(t)) { int subw = width > 2 ? width - 2 : width; @@ -255,6 +258,9 @@ static int print_test_result(struct test_suite *t, int i, int subtest, int resul pr_info("%3d: %-*s:", i + 1, width, test_description(t, subtest)); switch (result) { + case TEST_RUNNING: + color_fprintf(stderr, PERF_COLOR_YELLOW, " Running (%d active)\n", running); + break; case TEST_OK: pr_info(" Ok\n"); break; @@ -276,14 +282,17 @@ static int print_test_result(struct test_suite *t, int i, int subtest, int resul return 0; } -static int finish_test(struct child_test *child_test, int width) +static int finish_test(struct child_test **child_tests, int running_test, int child_test_num, + int width) { + struct child_test *child_test = child_tests[running_test]; struct test_suite *t = child_test->test; int i = child_test->test_num; int subi = child_test->subtest; int err = child_test->process.err; - bool err_done = err <= 0; + bool err_done = false; struct strbuf err_output = STRBUF_INIT; + int last_running = -1; int ret; /* @@ -297,7 +306,7 @@ static int finish_test(struct child_test *child_test, int width) * Busy loop reading from the child's stdout/stderr that are set to be * non-blocking until EOF. */ - if (!err_done) + if (err > 0) fcntl(err, F_SETFL, O_NONBLOCK); if (verbose > 1) { if (has_subtests(t)) @@ -311,38 +320,60 @@ static int finish_test(struct child_test *child_test, int width) .events = POLLIN | POLLERR | POLLHUP | POLLNVAL, }, }; - char buf[512]; - ssize_t len; - - /* Poll to avoid excessive spinning, timeout set for 100ms. */ - poll(pfds, ARRAY_SIZE(pfds), /*timeout=*/100); - if (!err_done && pfds[0].revents) { - errno = 0; - len = read(err, buf, sizeof(buf) - 1); - - if (len <= 0) { - err_done = errno != EAGAIN; - } else { - buf[len] = '\0'; - if (verbose > 1) - fprintf(stdout, "%s", buf); - else + if (perf_use_color_default) { + int running = 0; + + for (int y = running_test; y < child_test_num; y++) { + if (check_if_command_finished(&child_tests[y]->process) == 0) + running++; + } + if (running != last_running) { + if (last_running != -1) { + /* + * Erase "Running (.. active)" line + * printed before poll/sleep. + */ + fprintf(debug_file(), PERF_COLOR_DELETE_LINE); + } + print_test_result(t, i, subi, TEST_RUNNING, width, running); + last_running = running; + } + } + + err_done = true; + if (err <= 0) { + /* No child stderr to poll, sleep for 10ms for child to complete. */ + usleep(10 * 1000); + } else { + /* Poll to avoid excessive spinning, timeout set for 100ms. */ + poll(pfds, ARRAY_SIZE(pfds), /*timeout=*/100); + if (pfds[0].revents) { + char buf[512]; + ssize_t len; + + len = read(err, buf, sizeof(buf) - 1); + + if (len > 0) { + err_done = false; + buf[len] = '\0'; strbuf_addstr(&err_output, buf); + } } } + if (err_done) + err_done = check_if_command_finished(&child_test->process); + } + if (perf_use_color_default && last_running != -1) { + /* Erase "Running (.. active)" line printed before poll/sleep. */ + fprintf(debug_file(), PERF_COLOR_DELETE_LINE); } /* Clean up child process. */ ret = finish_command(&child_test->process); - if (verbose == 1 && ret == TEST_FAIL) { - /* Add header for test that was skipped above. */ - if (has_subtests(t)) - pr_info("%3d.%1d: %s:\n", i + 1, subi + 1, test_description(t, subi)); - else - pr_info("%3d: %s:\n", i + 1, test_description(t, -1)); + if (verbose > 1 || (verbose == 1 && ret == TEST_FAIL)) fprintf(stderr, "%s", err_output.buf); - } + strbuf_release(&err_output); - print_test_result(t, i, subi, ret, width); + print_test_result(t, i, subi, ret, width, /*running=*/0); if (err > 0) close(err); return 0; @@ -358,7 +389,7 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes pr_debug("--- start ---\n"); err = test_function(test, subi)(test, subi); pr_debug("---- end ----\n"); - print_test_result(test, i, subi, err, width); + print_test_result(test, i, subi, err, width, /*running=*/0); return 0; } @@ -383,7 +414,7 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes err = start_command(&(*child)->process); if (err || !sequential) return err; - return finish_test(*child, width); + return finish_test(child, /*running_test=*/0, /*child_test_num=*/1, width); } #define for_each_test(j, k, t) \ @@ -468,7 +499,7 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) } for (i = 0; i < child_test_num; i++) { if (!sequential) { - int ret = finish_test(child_tests[i], width); + int ret = finish_test(child_tests, i, child_test_num, width); if (ret) return ret; diff --git a/tools/perf/util/color.h b/tools/perf/util/color.h index b2f37de305f6..9a7248dbe2d7 100644 --- a/tools/perf/util/color.h +++ b/tools/perf/util/color.h @@ -23,6 +23,7 @@ #define MIN_GREEN 0.5 #define MIN_RED 5.0 +#define PERF_COLOR_DELETE_LINE "\033[A\33[2K\r" /* * This variable stores the value of color.ui */ -- cgit v1.2.3 From d50318fe00d176c5ee5de9092ca092bee05a9eb6 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:02 -0700 Subject: perf test: Reduce scope of parallel variable The variable duplicates sequential but is only used for command line argument processing. Reduce scope to make the behavior clearer. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-4-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 57d2e9e03fbc..0e8f877f4b1f 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -41,9 +41,6 @@ static bool dont_fork; /* Don't fork the tests in parallel and wait for their completion. */ static bool sequential = true; -/* Do it in parallel, lacks infrastructure to avoid running tests that clash for resources, - * So leave it as the developers choice to enable while working on the needed infra */ -static bool parallel; const char *dso_to_test; const char *test_objdump_path = "objdump"; @@ -578,6 +575,12 @@ int cmd_test(int argc, const char **argv) const char *skip = NULL; const char *workload = NULL; bool list_workloads = false; + /* + * Run tests in parallel, lacks infrastructure to avoid running tests + * that clash for resources, So leave it as the developers choice to + * enable while working on the needed infra. + */ + bool parallel = false; const struct option test_options[] = { OPT_STRING('s', "skip", &skip, "tests", "tests to skip"), OPT_INCR('v', "verbose", &verbose, -- cgit v1.2.3 From 2c66343927eebe799324410f1ca9cde79e71dbe4 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:03 -0700 Subject: perf test: Avoid list test blocking on writing to stdout Python's json.tool will output the input json to stdout. Redirect to /dev/null to avoid blocking on stdout writes. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-5-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/list.sh | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/list.sh b/tools/perf/tests/shell/list.sh index 8a868ae64560..76a9846cff22 100755 --- a/tools/perf/tests/shell/list.sh +++ b/tools/perf/tests/shell/list.sh @@ -24,8 +24,11 @@ trap trap_cleanup EXIT TERM INT test_list_json() { echo "Json output test" + # Generate perf list json output into list_output file. perf list -j -o "${list_output}" - $PYTHON -m json.tool "${list_output}" + # Validate the json using python, redirect the json copy to /dev/null as + # otherwise the test may block writing to stdout. + $PYTHON -m json.tool "${list_output}" /dev/null echo "Json output test [Success]" } -- cgit v1.2.3 From 2532be3d219d8819e59dc52a5ead4696b8354a82 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:04 -0700 Subject: perf test: Tag parallel failing shell tests with "(exclusive)" Some shell tests compete for resources and so can't run with other tests, tag such tests. The "(exclusive)" stems from shared/exclusive to describe how the tests run as if holding a lock. For ARM/coresight tests: Suggested-by: James Clark Additional failing tests: Suggested-by: Namhyung Kim Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-6-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/coresight/asm_pure_loop.sh | 2 +- tools/perf/tests/shell/coresight/memcpy_thread_16k_10.sh | 2 +- tools/perf/tests/shell/coresight/thread_loop_check_tid_10.sh | 2 +- tools/perf/tests/shell/coresight/thread_loop_check_tid_2.sh | 2 +- tools/perf/tests/shell/coresight/unroll_loop_thread_10.sh | 2 +- tools/perf/tests/shell/perftool-testsuite_report.sh | 2 +- tools/perf/tests/shell/probe_vfs_getname.sh | 2 +- tools/perf/tests/shell/record+script_probe_vfs_getname.sh | 2 +- tools/perf/tests/shell/record.sh | 2 +- tools/perf/tests/shell/record_lbr.sh | 2 +- tools/perf/tests/shell/record_offcpu.sh | 2 +- tools/perf/tests/shell/stat_all_pmu.sh | 2 +- tools/perf/tests/shell/stat_bpf_counters.sh | 2 +- tools/perf/tests/shell/test_arm_coresight.sh | 2 +- tools/perf/tests/shell/test_arm_coresight_disasm.sh | 2 +- tools/perf/tests/shell/test_arm_spe.sh | 2 +- tools/perf/tests/shell/test_data_symbol.sh | 2 +- tools/perf/tests/shell/test_intel_pt.sh | 2 +- tools/perf/tests/shell/test_stat_intel_tpebs.sh | 2 +- tools/perf/tests/shell/trace+probe_vfs_getname.sh | 2 +- 20 files changed, 20 insertions(+), 20 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/coresight/asm_pure_loop.sh b/tools/perf/tests/shell/coresight/asm_pure_loop.sh index 2d65defb7e0f..c63bc8c73e26 100755 --- a/tools/perf/tests/shell/coresight/asm_pure_loop.sh +++ b/tools/perf/tests/shell/coresight/asm_pure_loop.sh @@ -1,5 +1,5 @@ #!/bin/sh -e -# CoreSight / ASM Pure Loop +# CoreSight / ASM Pure Loop (exclusive) # SPDX-License-Identifier: GPL-2.0 # Carsten Haitzler , 2021 diff --git a/tools/perf/tests/shell/coresight/memcpy_thread_16k_10.sh b/tools/perf/tests/shell/coresight/memcpy_thread_16k_10.sh index ddcc9bb850f5..8e29630957c8 100755 --- a/tools/perf/tests/shell/coresight/memcpy_thread_16k_10.sh +++ b/tools/perf/tests/shell/coresight/memcpy_thread_16k_10.sh @@ -1,5 +1,5 @@ #!/bin/sh -e -# CoreSight / Memcpy 16k 10 Threads +# CoreSight / Memcpy 16k 10 Threads (exclusive) # SPDX-License-Identifier: GPL-2.0 # Carsten Haitzler , 2021 diff --git a/tools/perf/tests/shell/coresight/thread_loop_check_tid_10.sh b/tools/perf/tests/shell/coresight/thread_loop_check_tid_10.sh index 2ce5e139b2fd..0c4c82a1c8e1 100755 --- a/tools/perf/tests/shell/coresight/thread_loop_check_tid_10.sh +++ b/tools/perf/tests/shell/coresight/thread_loop_check_tid_10.sh @@ -1,5 +1,5 @@ #!/bin/sh -e -# CoreSight / Thread Loop 10 Threads - Check TID +# CoreSight / Thread Loop 10 Threads - Check TID (exclusive) # SPDX-License-Identifier: GPL-2.0 # Carsten Haitzler , 2021 diff --git a/tools/perf/tests/shell/coresight/thread_loop_check_tid_2.sh b/tools/perf/tests/shell/coresight/thread_loop_check_tid_2.sh index 3ad9498753d7..d3aea9fc6ced 100755 --- a/tools/perf/tests/shell/coresight/thread_loop_check_tid_2.sh +++ b/tools/perf/tests/shell/coresight/thread_loop_check_tid_2.sh @@ -1,5 +1,5 @@ #!/bin/sh -e -# CoreSight / Thread Loop 2 Threads - Check TID +# CoreSight / Thread Loop 2 Threads - Check TID (exclusive) # SPDX-License-Identifier: GPL-2.0 # Carsten Haitzler , 2021 diff --git a/tools/perf/tests/shell/coresight/unroll_loop_thread_10.sh b/tools/perf/tests/shell/coresight/unroll_loop_thread_10.sh index 4fbb4a29aad3..7429d3a2ae43 100755 --- a/tools/perf/tests/shell/coresight/unroll_loop_thread_10.sh +++ b/tools/perf/tests/shell/coresight/unroll_loop_thread_10.sh @@ -1,5 +1,5 @@ #!/bin/sh -e -# CoreSight / Unroll Loop Thread 10 +# CoreSight / Unroll Loop Thread 10 (exclusive) # SPDX-License-Identifier: GPL-2.0 # Carsten Haitzler , 2021 diff --git a/tools/perf/tests/shell/perftool-testsuite_report.sh b/tools/perf/tests/shell/perftool-testsuite_report.sh index 973012ce92a7..a8cf75b4e77e 100755 --- a/tools/perf/tests/shell/perftool-testsuite_report.sh +++ b/tools/perf/tests/shell/perftool-testsuite_report.sh @@ -1,5 +1,5 @@ #!/bin/bash -# perftool-testsuite_report +# perftool-testsuite_report (exclusive) # SPDX-License-Identifier: GPL-2.0 test -d "$(dirname "$0")/base_report" || exit 2 diff --git a/tools/perf/tests/shell/probe_vfs_getname.sh b/tools/perf/tests/shell/probe_vfs_getname.sh index 554e12e83c55..0c5aacc446b3 100755 --- a/tools/perf/tests/shell/probe_vfs_getname.sh +++ b/tools/perf/tests/shell/probe_vfs_getname.sh @@ -1,5 +1,5 @@ #!/bin/sh -# Add vfs_getname probe to get syscall args filenames +# Add vfs_getname probe to get syscall args filenames (exclusive) # SPDX-License-Identifier: GPL-2.0 # Arnaldo Carvalho de Melo , 2017 diff --git a/tools/perf/tests/shell/record+script_probe_vfs_getname.sh b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh index 9a61928e3c9a..5940fdc1df37 100755 --- a/tools/perf/tests/shell/record+script_probe_vfs_getname.sh +++ b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh @@ -1,5 +1,5 @@ #!/bin/sh -# Use vfs_getname probe to get syscall args filenames +# Use vfs_getname probe to get syscall args filenames (exclusive) # Uses the 'perf test shell' library to add probe:vfs_getname to the system # then use it with 'perf record' using 'touch' to write to a temp file, then diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh index f0e79200b981..85d512f5a126 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -1,5 +1,5 @@ #!/bin/bash -# perf record tests +# perf record tests (exclusive) # SPDX-License-Identifier: GPL-2.0 set -e diff --git a/tools/perf/tests/shell/record_lbr.sh b/tools/perf/tests/shell/record_lbr.sh index 32314641217e..8d750ee631f8 100755 --- a/tools/perf/tests/shell/record_lbr.sh +++ b/tools/perf/tests/shell/record_lbr.sh @@ -1,5 +1,5 @@ #!/bin/bash -# perf record LBR tests +# perf record LBR tests (exclusive) # SPDX-License-Identifier: GPL-2.0 set -e diff --git a/tools/perf/tests/shell/record_offcpu.sh b/tools/perf/tests/shell/record_offcpu.sh index 67c925f3a15a..678947fe69ee 100755 --- a/tools/perf/tests/shell/record_offcpu.sh +++ b/tools/perf/tests/shell/record_offcpu.sh @@ -1,5 +1,5 @@ #!/bin/sh -# perf record offcpu profiling tests +# perf record offcpu profiling tests (exclusive) # SPDX-License-Identifier: GPL-2.0 set -e diff --git a/tools/perf/tests/shell/stat_all_pmu.sh b/tools/perf/tests/shell/stat_all_pmu.sh index 42456d89c5da..8b148b300be1 100755 --- a/tools/perf/tests/shell/stat_all_pmu.sh +++ b/tools/perf/tests/shell/stat_all_pmu.sh @@ -1,5 +1,5 @@ #!/bin/bash -# perf all PMU test +# perf all PMU test (exclusive) # SPDX-License-Identifier: GPL-2.0 set -e diff --git a/tools/perf/tests/shell/stat_bpf_counters.sh b/tools/perf/tests/shell/stat_bpf_counters.sh index f250b7d6f773..a038c1b1a706 100755 --- a/tools/perf/tests/shell/stat_bpf_counters.sh +++ b/tools/perf/tests/shell/stat_bpf_counters.sh @@ -1,5 +1,5 @@ #!/bin/sh -# perf stat --bpf-counters test +# perf stat --bpf-counters test (exclusive) # SPDX-License-Identifier: GPL-2.0 set -e diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh index 6b8c4831eedc..573af9235b72 100755 --- a/tools/perf/tests/shell/test_arm_coresight.sh +++ b/tools/perf/tests/shell/test_arm_coresight.sh @@ -1,5 +1,5 @@ #!/bin/sh -# Check Arm CoreSight trace data recording and synthesized samples +# Check Arm CoreSight trace data recording and synthesized samples (exclusive) # Uses the 'perf record' to record trace data with Arm CoreSight sinks; # then verify if there have any branch samples and instruction samples diff --git a/tools/perf/tests/shell/test_arm_coresight_disasm.sh b/tools/perf/tests/shell/test_arm_coresight_disasm.sh index dba086a40d84..be2d26303f94 100755 --- a/tools/perf/tests/shell/test_arm_coresight_disasm.sh +++ b/tools/perf/tests/shell/test_arm_coresight_disasm.sh @@ -1,5 +1,5 @@ #!/bin/sh -# Check Arm CoreSight disassembly script completes without errors +# Check Arm CoreSight disassembly script completes without errors (exclusive) # SPDX-License-Identifier: GPL-2.0 # The disassembly script reconstructs ranges of instructions and gives these to objdump to diff --git a/tools/perf/tests/shell/test_arm_spe.sh b/tools/perf/tests/shell/test_arm_spe.sh index 6c21fb1f10d8..3258368634f7 100755 --- a/tools/perf/tests/shell/test_arm_spe.sh +++ b/tools/perf/tests/shell/test_arm_spe.sh @@ -1,5 +1,5 @@ #!/bin/sh -# Check Arm SPE trace data recording and synthesized samples +# Check Arm SPE trace data recording and synthesized samples (exclusive) # Uses the 'perf record' to record trace data of Arm SPE events; # then verify if any SPE event samples are generated by SPE with diff --git a/tools/perf/tests/shell/test_data_symbol.sh b/tools/perf/tests/shell/test_data_symbol.sh index 3dfa91832aa8..c86da0235059 100755 --- a/tools/perf/tests/shell/test_data_symbol.sh +++ b/tools/perf/tests/shell/test_data_symbol.sh @@ -1,5 +1,5 @@ #!/bin/bash -# Test data symbol +# Test data symbol (exclusive) # SPDX-License-Identifier: GPL-2.0 # Leo Yan , 2022 diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh index bf9017b812aa..e6f0070975f6 100755 --- a/tools/perf/tests/shell/test_intel_pt.sh +++ b/tools/perf/tests/shell/test_intel_pt.sh @@ -1,5 +1,5 @@ #!/bin/sh -# Miscellaneous Intel PT testing +# Miscellaneous Intel PT testing (exclusive) # SPDX-License-Identifier: GPL-2.0 set -e diff --git a/tools/perf/tests/shell/test_stat_intel_tpebs.sh b/tools/perf/tests/shell/test_stat_intel_tpebs.sh index 9a11f42d153c..f95fc64bf0a7 100755 --- a/tools/perf/tests/shell/test_stat_intel_tpebs.sh +++ b/tools/perf/tests/shell/test_stat_intel_tpebs.sh @@ -1,5 +1,5 @@ #!/bin/bash -# test Intel TPEBS counting mode +# test Intel TPEBS counting mode (exclusive) # SPDX-License-Identifier: GPL-2.0 set -e diff --git a/tools/perf/tests/shell/trace+probe_vfs_getname.sh b/tools/perf/tests/shell/trace+probe_vfs_getname.sh index 97b4b9cd2378..708a13f00635 100755 --- a/tools/perf/tests/shell/trace+probe_vfs_getname.sh +++ b/tools/perf/tests/shell/trace+probe_vfs_getname.sh @@ -1,5 +1,5 @@ #!/bin/sh -# Check open filename arg using perf trace + vfs_getname +# Check open filename arg using perf trace + vfs_getname (exclusive) # Uses the 'perf test shell' library to add probe:vfs_getname to the system # then use it with 'perf trace' using 'touch' to write to a temp file, then -- cgit v1.2.3 From a6fffc60940a903ebcd70d44f047277ba5188225 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:05 -0700 Subject: perf test: Add a signal handler around running a test Add a signal handler around running a test. If a signal occurs during the test a siglongjmp unwinds the stack and output is flushed. The global run_test_jmp_buf is either unique per forked child or not shared during sequential execution. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-7-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 0e8f877f4b1f..8a720ddb0396 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -229,16 +230,41 @@ struct child_test { int subtest; }; +static jmp_buf run_test_jmp_buf; + +static void child_test_sig_handler(int sig) +{ + siglongjmp(run_test_jmp_buf, sig); +} + static int run_test_child(struct child_process *process) { - struct child_test *child = container_of(process, struct child_test, process); + const int signals[] = { + SIGABRT, SIGBUS, SIGFPE, SIGILL, SIGINT, SIGPIPE, SIGQUIT, SIGSEGV, SIGTERM, + }; + static struct child_test *child; int err; + err = sigsetjmp(run_test_jmp_buf, 1); + if (err) { + fprintf(stderr, "\n---- unexpected signal (%d) ----\n", err); + err = err > 0 ? -err : -1; + goto err_out; + } + + child = container_of(process, struct child_test, process); + for (size_t i = 0; i < ARRAY_SIZE(signals); i++) + signal(signals[i], child_test_sig_handler); + pr_debug("--- start ---\n"); pr_debug("test child forked, pid %d\n", getpid()); err = test_function(child->test, child->subtest)(child->test, child->subtest); pr_debug("---- end(%d) ----\n", err); + +err_out: fflush(NULL); + for (size_t i = 0; i < ARRAY_SIZE(signals); i++) + signal(signals[i], SIG_DFL); return -err; } -- cgit v1.2.3 From 79e72f384d733f78cb07a9649a5ea52b78898a30 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:06 -0700 Subject: perf test: Run parallel tests in two passes In pass 1 run all tests that succeed when run in parallel. In pass 2 sequentially run all remaining tests that are flagged as "exclusive". Sequential and dont_fork tests keep to run in pass 1. Read the exclusive flag from the shell test descriptions, but remove from display to avoid >100 characters. Add error handling to finish tests if starting a later test fails. Mark the task-exit test as exclusive due to issues reported-by James Clark. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-8-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 157 ++++++++++++++++++++++++--------------- tools/perf/tests/task-exit.c | 9 ++- tools/perf/tests/tests-scripts.c | 7 +- tools/perf/tests/tests.h | 9 +++ 4 files changed, 121 insertions(+), 61 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 8a720ddb0396..b997d0a68ca2 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -199,6 +199,14 @@ static test_fnptr test_function(const struct test_suite *t, int subtest) return t->test_cases[subtest].run_case; } +static bool test_exclusive(const struct test_suite *t, int subtest) +{ + if (subtest <= 0) + return t->test_cases[0].exclusive; + + return t->test_cases[subtest].exclusive; +} + static bool perf_test__matches(const char *desc, int curr, int argc, const char *argv[]) { int i; @@ -242,7 +250,7 @@ static int run_test_child(struct child_process *process) const int signals[] = { SIGABRT, SIGBUS, SIGFPE, SIGILL, SIGINT, SIGPIPE, SIGQUIT, SIGSEGV, SIGTERM, }; - static struct child_test *child; + struct child_test *child = container_of(process, struct child_test, process); int err; err = sigsetjmp(run_test_jmp_buf, 1); @@ -252,7 +260,6 @@ static int run_test_child(struct child_process *process) goto err_out; } - child = container_of(process, struct child_test, process); for (size_t i = 0; i < ARRAY_SIZE(signals); i++) signal(signals[i], child_test_sig_handler); @@ -305,19 +312,25 @@ static int print_test_result(struct test_suite *t, int i, int subtest, int resul return 0; } -static int finish_test(struct child_test **child_tests, int running_test, int child_test_num, - int width) +static void finish_test(struct child_test **child_tests, int running_test, int child_test_num, + int width) { struct child_test *child_test = child_tests[running_test]; - struct test_suite *t = child_test->test; - int i = child_test->test_num; - int subi = child_test->subtest; - int err = child_test->process.err; + struct test_suite *t; + int i, subi, err; bool err_done = false; struct strbuf err_output = STRBUF_INIT; int last_running = -1; int ret; + if (child_test == NULL) { + /* Test wasn't started. */ + return; + } + t = child_test->test; + i = child_test->test_num; + subi = child_test->subtest; + err = child_test->process.err; /* * For test suites with subtests, display the suite name ahead of the * sub test names. @@ -347,6 +360,8 @@ static int finish_test(struct child_test **child_tests, int running_test, int ch int running = 0; for (int y = running_test; y < child_test_num; y++) { + if (child_tests[y] == NULL) + continue; if (check_if_command_finished(&child_tests[y]->process) == 0) running++; } @@ -399,23 +414,32 @@ static int finish_test(struct child_test **child_tests, int running_test, int ch print_test_result(t, i, subi, ret, width, /*running=*/0); if (err > 0) close(err); - return 0; + zfree(&child_tests[running_test]); } static int start_test(struct test_suite *test, int i, int subi, struct child_test **child, - int width) + int width, int pass) { int err; *child = NULL; if (dont_fork) { - pr_debug("--- start ---\n"); - err = test_function(test, subi)(test, subi); - pr_debug("---- end ----\n"); - print_test_result(test, i, subi, err, width, /*running=*/0); + if (pass == 1) { + pr_debug("--- start ---\n"); + err = test_function(test, subi)(test, subi); + pr_debug("---- end ----\n"); + print_test_result(test, i, subi, err, width, /*running=*/0); + } + return 0; + } + if (pass == 1 && !sequential && test_exclusive(test, subi)) { + /* When parallel, skip exclusive tests on the first pass. */ + return 0; + } + if (pass != 1 && (sequential || !test_exclusive(test, subi))) { + /* Sequential and non-exclusive tests were run on the first pass. */ return 0; } - *child = zalloc(sizeof(**child)); if (!*child) return -ENOMEM; @@ -434,10 +458,14 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes (*child)->process.err = -1; } (*child)->process.no_exec_cmd = run_test_child; - err = start_command(&(*child)->process); - if (err || !sequential) - return err; - return finish_test(child, /*running_test=*/0, /*child_test_num=*/1, width); + if (sequential || pass == 2) { + err = start_command(&(*child)->process); + if (err) + return err; + finish_test(child, /*running_test=*/0, /*child_test_num=*/1, width); + return 0; + } + return start_command(&(*child)->process); } #define for_each_test(j, k, t) \ @@ -447,12 +475,11 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) { struct test_suite *t; - unsigned int j, k; - int i = 0; int width = 0; + unsigned int j, k; size_t num_tests = 0; struct child_test **child_tests; - int child_test_num = 0; + int err = 0; for_each_test(j, k, t) { int len = strlen(test_description(t, -1)); @@ -475,62 +502,73 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) if (!child_tests) return -ENOMEM; - for_each_test(j, k, t) { - int curr = i++; - - if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) { - bool skip = true; + /* + * In parallel mode pass 1 runs non-exclusive tests in parallel, pass 2 + * runs the exclusive tests sequentially. In other modes all tests are + * run in pass 1. + */ + for (int pass = 1; pass <= 2; pass++) { + int child_test_num = 0; + int i = 0; + + for_each_test(j, k, t) { + int curr = i++; + + if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) { + /* + * Test suite shouldn't be run based on + * description. See if subtest should. + */ + bool skip = true; + + for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) { + if (perf_test__matches(test_description(t, subi), + curr, argc, argv)) + skip = false; + } - for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) { - if (perf_test__matches(test_description(t, subi), - curr, argc, argv)) - skip = false; + if (skip) + continue; } - if (skip) + if (intlist__find(skiplist, i)) { + pr_info("%3d: %-*s:", curr + 1, width, test_description(t, -1)); + color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n"); continue; - } - - if (intlist__find(skiplist, i)) { - pr_info("%3d: %-*s:", curr + 1, width, test_description(t, -1)); - color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n"); - continue; - } - - if (!has_subtests(t)) { - int err = start_test(t, curr, -1, &child_tests[child_test_num++], width); + } - if (err) { - /* TODO: if !sequential waitpid the already forked children. */ - free(child_tests); - return err; + if (!has_subtests(t)) { + err = start_test(t, curr, -1, &child_tests[child_test_num++], + width, pass); + if (err) + goto err_out; + continue; } - } else { for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) { - int err; - if (!perf_test__matches(test_description(t, subi), curr, argc, argv)) continue; err = start_test(t, curr, subi, &child_tests[child_test_num++], - width); + width, pass); if (err) - return err; + goto err_out; } } - } - for (i = 0; i < child_test_num; i++) { if (!sequential) { - int ret = finish_test(child_tests, i, child_test_num, width); - - if (ret) - return ret; + /* Parallel mode starts tests but doesn't finish them. Do that now. */ + for (size_t x = 0; x < num_tests; x++) + finish_test(child_tests, x, num_tests, width); } - free(child_tests[i]); + } +err_out: + if (err) { + pr_err("Internal test harness failure. Completing any started tests:\n:"); + for (size_t x = 0; x < num_tests; x++) + finish_test(child_tests, x, num_tests, width); } free(child_tests); - return 0; + return err; } static int perf_test__list(int argc, const char **argv) @@ -656,6 +694,7 @@ int cmd_test(int argc, const char **argv) symbol_conf.priv_size = sizeof(int); symbol_conf.try_vmlinux_path = true; + if (symbol__init(NULL) < 0) return -1; diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c index d33d0952025c..8e328bbd509d 100644 --- a/tools/perf/tests/task-exit.c +++ b/tools/perf/tests/task-exit.c @@ -152,4 +152,11 @@ out_delete_evlist: return err; } -DEFINE_SUITE("Number of exit events of a simple workload", task_exit); +struct test_case tests__task_exit[] = { + TEST_CASE_EXCLUSIVE("Number of exit events of a simple workload", task_exit), + { .name = NULL, } +}; +struct test_suite suite__task_exit = { + .desc = "Number of exit events of a simple workload", + .test_cases = tests__task_exit, +}; diff --git a/tools/perf/tests/tests-scripts.c b/tools/perf/tests/tests-scripts.c index ed114b044293..cf3ae0c1d871 100644 --- a/tools/perf/tests/tests-scripts.c +++ b/tools/perf/tests/tests-scripts.c @@ -175,6 +175,7 @@ static void append_script(int dir_fd, const char *name, char *desc, struct test_suite *test_suite, **result_tmp; struct test_case *tests; size_t len; + char *exclusive; snprintf(link, sizeof(link), "/proc/%d/fd/%d", getpid(), dir_fd); len = readlink(link, filename, sizeof(filename)); @@ -191,9 +192,13 @@ static void append_script(int dir_fd, const char *name, char *desc, return; } tests[0].name = strdup_check(name); + exclusive = strstr(desc, " (exclusive)"); + if (exclusive != NULL) { + tests[0].exclusive = true; + exclusive[0] = '\0'; + } tests[0].desc = strdup_check(desc); tests[0].run_case = shell_test__run; - test_suite = zalloc(sizeof(*test_suite)); if (!test_suite) { pr_err("Out of memory while building script test suite list\n"); diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index 1ed76d4156b6..af284dd47e5c 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -36,6 +36,7 @@ struct test_case { const char *desc; const char *skip_reason; test_fnptr run_case; + bool exclusive; }; struct test_suite { @@ -62,6 +63,14 @@ struct test_suite { .skip_reason = _reason, \ } +#define TEST_CASE_EXCLUSIVE(description, _name) \ + { \ + .name = #_name, \ + .desc = description, \ + .run_case = test__##_name, \ + .exclusive = true, \ + } + #define DEFINE_SUITE(description, _name) \ struct test_case tests__##_name[] = { \ TEST_CASE(description, _name), \ -- cgit v1.2.3 From 94d1a913bdc423073d5f58fcd8caaf7ee9f57ebc Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:07 -0700 Subject: perf test: Make parallel testing the default Now C tests can have the "exclusive" flag to run without other tests, and shell tests can add "(exclusive)" to their description, run tests in parallel by default. Tests which flake when run in parallel can be marked exclusive to resolve the problem. Non-scientifically, the reduction on `perf test` execution time is from 8m35.890s to 3m55.115s on a Tigerlake laptop. So the tests complete in less than half the time. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-9-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index b997d0a68ca2..a0a678facc45 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -40,8 +40,8 @@ * making them easier to debug. */ static bool dont_fork; -/* Don't fork the tests in parallel and wait for their completion. */ -static bool sequential = true; +/* Fork the tests in parallel and wait for their completion. */ +static bool sequential; const char *dso_to_test; const char *test_objdump_path = "objdump"; @@ -639,19 +639,12 @@ int cmd_test(int argc, const char **argv) const char *skip = NULL; const char *workload = NULL; bool list_workloads = false; - /* - * Run tests in parallel, lacks infrastructure to avoid running tests - * that clash for resources, So leave it as the developers choice to - * enable while working on the needed infra. - */ - bool parallel = false; const struct option test_options[] = { OPT_STRING('s', "skip", &skip, "tests", "tests to skip"), OPT_INCR('v', "verbose", &verbose, "be more verbose (show symbol address, etc)"), OPT_BOOLEAN('F', "dont-fork", &dont_fork, "Do not fork for testcase"), - OPT_BOOLEAN('p', "parallel", ¶llel, "Run the tests in parallel"), OPT_BOOLEAN('S', "sequential", &sequential, "Run the tests one after another rather than in parallel"), OPT_STRING('w', "workload", &workload, "work", "workload to run for testing, use '--list-workloads' to list the available ones."), @@ -688,8 +681,6 @@ int cmd_test(int argc, const char **argv) if (dont_fork) sequential = true; - else if (parallel) - sequential = false; symbol_conf.priv_size = sizeof(int); symbol_conf.try_vmlinux_path = true; -- cgit v1.2.3 From 553d5efeb341f2f814f937e0658ed7d22f625662 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:08 -0700 Subject: perf test: Add a signal handler to kill forked child processes If the `perf test` process is killed the child tests continue running and may run indefinitely. Propagate SIGINT (ctrl-C) and SIGTERM (kill) signals to the running child processes so that they terminate when the parent is killed. Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: James Clark Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-10-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 37 ++++++++++++++++++++++++++++++++++--- 1 file changed, 34 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index a0a678facc45..2f880f48cdc5 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -472,13 +472,22 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes for (j = 0, k = 0; j < ARRAY_SIZE(tests); j++, k = 0) \ while ((t = tests[j][k++]) != NULL) +/* State outside of __cmd_test for the sake of the signal handler. */ + +static size_t num_tests; +static struct child_test **child_tests; +static jmp_buf cmd_test_jmp_buf; + +static void cmd_test_sig_handler(int sig) +{ + siglongjmp(cmd_test_jmp_buf, sig); +} + static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) { struct test_suite *t; - int width = 0; + static int width = 0; unsigned int j, k; - size_t num_tests = 0; - struct child_test **child_tests; int err = 0; for_each_test(j, k, t) { @@ -502,6 +511,26 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) if (!child_tests) return -ENOMEM; + err = sigsetjmp(cmd_test_jmp_buf, 1); + if (err) { + pr_err("\nSignal (%d) while running tests.\nTerminating tests with the same signal\n", + err); + for (size_t x = 0; x < num_tests; x++) { + struct child_test *child_test = child_tests[x]; + + if (!child_test) + continue; + + pr_debug3("Killing %d pid %d\n", + child_test->test_num + 1, + child_test->process.pid); + kill(child_test->process.pid, err); + } + goto err_out; + } + signal(SIGINT, cmd_test_sig_handler); + signal(SIGTERM, cmd_test_sig_handler); + /* * In parallel mode pass 1 runs non-exclusive tests in parallel, pass 2 * runs the exclusive tests sequentially. In other modes all tests are @@ -562,6 +591,8 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) } } err_out: + signal(SIGINT, SIG_DFL); + signal(SIGTERM, SIG_DFL); if (err) { pr_err("Internal test harness failure. Completing any started tests:\n:"); for (size_t x = 0; x < num_tests; x++) -- cgit v1.2.3 From 7449a4d674cc14f8e689cecf7354748706d00f30 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 25 Oct 2024 12:21:09 -0700 Subject: perf test: Sort tests placing exclusive tests last This allows a uniform test numbering even though two passes are used to execute them. Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: James Clark Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-11-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/builtin-test.c | 125 +++++++++++++++++++++++++++------------- 1 file changed, 84 insertions(+), 41 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 2f880f48cdc5..d2cabaa8ad92 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -137,12 +137,6 @@ static struct test_suite *generic_tests[] = { NULL, }; -static struct test_suite **tests[] = { - generic_tests, - arch_tests, - NULL, /* shell tests created at runtime. */ -}; - static struct test_workload *workloads[] = { &workload__noploop, &workload__thloop, @@ -468,10 +462,6 @@ static int start_test(struct test_suite *test, int i, int subi, struct child_tes return start_command(&(*child)->process); } -#define for_each_test(j, k, t) \ - for (j = 0, k = 0; j < ARRAY_SIZE(tests); j++, k = 0) \ - while ((t = tests[j][k++]) != NULL) - /* State outside of __cmd_test for the sake of the signal handler. */ static size_t num_tests; @@ -483,22 +473,21 @@ static void cmd_test_sig_handler(int sig) siglongjmp(cmd_test_jmp_buf, sig); } -static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) +static int __cmd_test(struct test_suite **suites, int argc, const char *argv[], + struct intlist *skiplist) { - struct test_suite *t; static int width = 0; - unsigned int j, k; int err = 0; - for_each_test(j, k, t) { - int len = strlen(test_description(t, -1)); + for (struct test_suite **t = suites; *t; t++) { + int len = strlen(test_description(*t, -1)); if (width < len) width = len; - if (has_subtests(t)) { - for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) { - len = strlen(test_description(t, subi)); + if (has_subtests(*t)) { + for (int subi = 0, subn = num_subtests(*t); subi < subn; subi++) { + len = strlen(test_description(*t, subi)); if (width < len) width = len; num_tests++; @@ -540,18 +529,18 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) int child_test_num = 0; int i = 0; - for_each_test(j, k, t) { + for (struct test_suite **t = suites; *t; t++) { int curr = i++; - if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) { + if (!perf_test__matches(test_description(*t, -1), curr, argc, argv)) { /* * Test suite shouldn't be run based on * description. See if subtest should. */ bool skip = true; - for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) { - if (perf_test__matches(test_description(t, subi), + for (int subi = 0, subn = num_subtests(*t); subi < subn; subi++) { + if (perf_test__matches(test_description(*t, subi), curr, argc, argv)) skip = false; } @@ -561,24 +550,24 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist) } if (intlist__find(skiplist, i)) { - pr_info("%3d: %-*s:", curr + 1, width, test_description(t, -1)); + pr_info("%3d: %-*s:", curr + 1, width, test_description(*t, -1)); color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n"); continue; } - if (!has_subtests(t)) { - err = start_test(t, curr, -1, &child_tests[child_test_num++], + if (!has_subtests(*t)) { + err = start_test(*t, curr, -1, &child_tests[child_test_num++], width, pass); if (err) goto err_out; continue; } - for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) { - if (!perf_test__matches(test_description(t, subi), + for (int subi = 0, subn = num_subtests(*t); subi < subn; subi++) { + if (!perf_test__matches(test_description(*t, subi), curr, argc, argv)) continue; - err = start_test(t, curr, subi, &child_tests[child_test_num++], + err = start_test(*t, curr, subi, &child_tests[child_test_num++], width, pass); if (err) goto err_out; @@ -602,27 +591,25 @@ err_out: return err; } -static int perf_test__list(int argc, const char **argv) +static int perf_test__list(struct test_suite **suites, int argc, const char **argv) { - unsigned int j, k; - struct test_suite *t; int i = 0; - for_each_test(j, k, t) { + for (struct test_suite **t = suites; *t; t++) { int curr = i++; - if (!perf_test__matches(test_description(t, -1), curr, argc, argv)) + if (!perf_test__matches(test_description(*t, -1), curr, argc, argv)) continue; - pr_info("%3d: %s\n", i, test_description(t, -1)); + pr_info("%3d: %s\n", i, test_description(*t, -1)); - if (has_subtests(t)) { - int subn = num_subtests(t); + if (has_subtests(*t)) { + int subn = num_subtests(*t); int subi; for (subi = 0; subi < subn; subi++) pr_info("%3d:%1d: %s\n", i, subi + 1, - test_description(t, subi)); + test_description(*t, subi)); } } return 0; @@ -661,6 +648,55 @@ static int perf_test__config(const char *var, const char *value, return 0; } +static struct test_suite **build_suites(void) +{ + /* + * TODO: suites is static to avoid needing to clean up the scripts tests + * for leak sanitizer. + */ + static struct test_suite **suites[] = { + generic_tests, + arch_tests, + NULL, + }; + struct test_suite **result; + struct test_suite *t; + size_t n = 0, num_suites = 0; + + if (suites[2] == NULL) + suites[2] = create_script_test_suites(); + +#define for_each_test(t) \ + for (size_t i = 0, j = 0; i < ARRAY_SIZE(suites); i++, j = 0) \ + while ((t = suites[i][j++]) != NULL) + + for_each_test(t) + num_suites++; + + result = calloc(num_suites + 1, sizeof(struct test_suite *)); + + for (int pass = 1; pass <= 2; pass++) { + for_each_test(t) { + bool exclusive = false; + + if (!has_subtests(t)) { + exclusive = test_exclusive(t, -1); + } else { + for (int subi = 0, subn = num_subtests(t); subi < subn; subi++) { + if (test_exclusive(t, subi)) { + exclusive = true; + break; + } + } + } + if ((!exclusive && pass == 1) || (exclusive && pass == 2)) + result[n++] = t; + } + } + return result; +#undef for_each_test +} + int cmd_test(int argc, const char **argv) { const char *test_usage[] = { @@ -688,6 +724,7 @@ int cmd_test(int argc, const char **argv) const char * const test_subcommands[] = { "list", NULL }; struct intlist *skiplist = NULL; int ret = hists__init(); + struct test_suite **suites; if (ret < 0) return ret; @@ -697,10 +734,13 @@ int cmd_test(int argc, const char **argv) /* Unbuffered output */ setvbuf(stdout, NULL, _IONBF, 0); - tests[2] = create_script_test_suites(); argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0); - if (argc >= 1 && !strcmp(argv[0], "list")) - return perf_test__list(argc - 1, argv + 1); + if (argc >= 1 && !strcmp(argv[0], "list")) { + suites = build_suites(); + ret = perf_test__list(suites, argc - 1, argv + 1); + free(suites); + return ret; + } if (workload) return run_workload(workload, argc, argv); @@ -728,5 +768,8 @@ int cmd_test(int argc, const char **argv) */ rlimit__bump_memlock(); - return __cmd_test(argc, argv, skiplist); + suites = build_suites(); + ret = __cmd_test(suites, argc, argv, skiplist); + free(suites); + return ret; } -- cgit v1.2.3 From e3b2949e3fa2fd8c19cd5fbb0424d38f70a70e9c Mon Sep 17 00:00:00 2001 From: Xu Yang Date: Tue, 24 Sep 2024 14:12:51 +0800 Subject: perf vendor events arm64: Add i.MX91 DDR Performance Monitor metrics Add JSON metrics for i.MX91 DDR Performance Monitor. Signed-off-by: Xu Yang Acked-by: Namhyung Kim Cc: festevam@gmail.com Cc: conor+dt@kernel.org Cc: krzk+dt@kernel.org Cc: robh@kernel.org Cc: shawnguo@kernel.org Cc: will@kernel.org Cc: james.clark@linaro.org Cc: mike.leach@linaro.org Cc: leo.yan@linux.dev Cc: linux-arm-kernel@lists.infradead.org Cc: imx@lists.linux.dev Cc: Frank.li@nxp.com Cc: john.g.garry@oracle.com Cc: kernel@pengutronix.de Cc: s.hauer@pengutronix.de Cc: devicetree@vger.kernel.org Link: https://lore.kernel.org/r/20240924061251.3387850-3-xu.yang_2@nxp.com Signed-off-by: Namhyung Kim --- .../arch/arm64/freescale/imx91/sys/ddrc.json | 9 ++++++++ .../arch/arm64/freescale/imx91/sys/metrics.json | 26 ++++++++++++++++++++++ 2 files changed, 35 insertions(+) create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/ddrc.json create mode 100644 tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/metrics.json (limited to 'tools') diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/ddrc.json b/tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/ddrc.json new file mode 100644 index 000000000000..74ac12660a29 --- /dev/null +++ b/tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/ddrc.json @@ -0,0 +1,9 @@ +[ + { + "BriefDescription": "ddr cycles event", + "EventCode": "0x00", + "EventName": "imx91_ddr.cycles", + "Unit": "imx9_ddr", + "Compat": "imx91" + } +] diff --git a/tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/metrics.json b/tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/metrics.json new file mode 100644 index 000000000000..f0c5911eb2d0 --- /dev/null +++ b/tools/perf/pmu-events/arch/arm64/freescale/imx91/sys/metrics.json @@ -0,0 +1,26 @@ +[ + { + "BriefDescription": "bandwidth usage for lpddr4 evk board", + "MetricName": "imx91_bandwidth_usage.lpddr4", + "MetricExpr": "(((( imx9_ddr0@ddrc_pm_0@ ) * 2 * 8 ) + (( imx9_ddr0@ddrc_pm_3@ + imx9_ddr0@ddrc_pm_5@ + imx9_ddr0@ddrc_pm_7@ + imx9_ddr0@ddrc_pm_9@ - imx9_ddr0@ddrc_pm_2@ - imx9_ddr0@ddrc_pm_4@ - imx9_ddr0@ddrc_pm_6@ - imx9_ddr0@ddrc_pm_8@ ) * 32 )) / duration_time) / (2400 * 1000000 * 2)", + "ScaleUnit": "1e2%", + "Unit": "imx9_ddr", + "Compat": "imx91" + }, + { + "BriefDescription": "bytes all masters read from ddr", + "MetricName": "imx91_ddr_read.all", + "MetricExpr": "( imx9_ddr0@ddrc_pm_0@ ) * 2 * 8", + "ScaleUnit": "9.765625e-4KB", + "Unit": "imx9_ddr", + "Compat": "imx91" + }, + { + "BriefDescription": "bytes all masters write to ddr", + "MetricName": "imx91_ddr_write.all", + "MetricExpr": "( imx9_ddr0@ddrc_pm_3@ + imx9_ddr0@ddrc_pm_5@ + imx9_ddr0@ddrc_pm_7@ + imx9_ddr0@ddrc_pm_9@ - imx9_ddr0@ddrc_pm_2@ - imx9_ddr0@ddrc_pm_4@ - imx9_ddr0@ddrc_pm_6@ - imx9_ddr0@ddrc_pm_8@ ) * 32", + "ScaleUnit": "9.765625e-4KB", + "Unit": "imx9_ddr", + "Compat": "imx91" + } +] -- cgit v1.2.3 From 47e99f30730c0167cd32c9a2fd4a74f0a024cb2b Mon Sep 17 00:00:00 2001 From: Leo Stone Date: Mon, 21 Oct 2024 10:46:44 -0700 Subject: selftest/tcp-ao: Add filter tests Add tests that check if getsockopt(TCP_AO_GET_KEYS) returns the right keys when using different filters. Sample output: > # ok 114 filter keys: by sndid, rcvid, address > # ok 115 filter keys: by is_current > # ok 116 filter keys: by is_rnext > # ok 117 filter keys: by sndid, rcvid > # ok 118 filter keys: correct nkeys when in.nkeys < matches Acked-by: Dmitry Safonov <0x7f454c46@gmail.com> Signed-off-by: Leo Stone Reviewed-by: Simon Horman Link: https://patch.msgid.link/20241021174652.6949-1-leocstone@gmail.com Signed-off-by: Jakub Kicinski --- .../selftests/net/tcp_ao/setsockopt-closed.c | 186 ++++++++++++++++++++- 1 file changed, 181 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/tcp_ao/setsockopt-closed.c b/tools/testing/selftests/net/tcp_ao/setsockopt-closed.c index 084db4ecdff6..0abb9807d742 100644 --- a/tools/testing/selftests/net/tcp_ao/setsockopt-closed.c +++ b/tools/testing/selftests/net/tcp_ao/setsockopt-closed.c @@ -6,6 +6,8 @@ static union tcp_addr tcp_md5_client; +#define FILTER_TEST_NKEYS 16 + static int test_port = 7788; static void make_listen(int sk) { @@ -813,23 +815,197 @@ static void duplicate_tests(void) setsockopt_checked(sk, TCP_AO_ADD_KEY, &ao, EEXIST, "duplicate: SendID differs"); } +static void fetch_all_keys(int sk, struct tcp_ao_getsockopt *keys) +{ + socklen_t optlen = sizeof(struct tcp_ao_getsockopt); + + memset(keys, 0, sizeof(struct tcp_ao_getsockopt) * FILTER_TEST_NKEYS); + keys[0].get_all = 1; + keys[0].nkeys = FILTER_TEST_NKEYS; + if (getsockopt(sk, IPPROTO_TCP, TCP_AO_GET_KEYS, &keys[0], &optlen)) + test_error("getsockopt"); +} + +static int prepare_test_keys(struct tcp_ao_getsockopt *keys) +{ + const char *test_password = "Test password number "; + struct tcp_ao_add test_ao[FILTER_TEST_NKEYS]; + char test_password_scratch[64] = {}; + u8 rcvid = 100, sndid = 100; + int sk; + + sk = socket(test_family, SOCK_STREAM, IPPROTO_TCP); + if (sk < 0) + test_error("socket()"); + + for (int i = 0; i < FILTER_TEST_NKEYS; i++) { + snprintf(test_password_scratch, 64, "%s %d", test_password, i); + test_prepare_key(&test_ao[i], DEFAULT_TEST_ALGO, this_ip_dest, + false, false, DEFAULT_TEST_PREFIX, 0, sndid++, + rcvid++, 0, 0, strlen(test_password_scratch), + test_password_scratch); + } + test_ao[0].set_current = 1; + test_ao[1].set_rnext = 1; + /* One key with a different addr and overlapping sndid, rcvid */ + tcp_addr_to_sockaddr_in(&test_ao[2].addr, &this_ip_addr, 0); + test_ao[2].sndid = 100; + test_ao[2].rcvid = 100; + + /* Add keys in a random order */ + for (int i = 0; i < FILTER_TEST_NKEYS; i++) { + int randidx = rand() % (FILTER_TEST_NKEYS - i); + + if (setsockopt(sk, IPPROTO_TCP, TCP_AO_ADD_KEY, + &test_ao[randidx], sizeof(struct tcp_ao_add))) + test_error("setsockopt()"); + memcpy(&test_ao[randidx], &test_ao[FILTER_TEST_NKEYS - 1 - i], + sizeof(struct tcp_ao_add)); + } + + fetch_all_keys(sk, keys); + + return sk; +} + +/* Assumes passwords are unique */ +static int compare_mkts(struct tcp_ao_getsockopt *expected, int nexpected, + struct tcp_ao_getsockopt *actual, int nactual) +{ + int matches = 0; + + for (int i = 0; i < nexpected; i++) { + for (int j = 0; j < nactual; j++) { + if (memcmp(expected[i].key, actual[j].key, + TCP_AO_MAXKEYLEN) == 0) + matches++; + } + } + return nexpected - matches; +} + +static void filter_keys_checked(int sk, struct tcp_ao_getsockopt *filter, + struct tcp_ao_getsockopt *expected, + unsigned int nexpected, const char *tst) +{ + struct tcp_ao_getsockopt filtered_keys[FILTER_TEST_NKEYS] = {}; + struct tcp_ao_getsockopt all_keys[FILTER_TEST_NKEYS] = {}; + socklen_t len = sizeof(struct tcp_ao_getsockopt); + + fetch_all_keys(sk, all_keys); + memcpy(&filtered_keys[0], filter, sizeof(struct tcp_ao_getsockopt)); + filtered_keys[0].nkeys = FILTER_TEST_NKEYS; + if (getsockopt(sk, IPPROTO_TCP, TCP_AO_GET_KEYS, filtered_keys, &len)) + test_error("getsockopt"); + if (filtered_keys[0].nkeys != nexpected) { + test_fail("wrong nr of keys, expected %u got %u", nexpected, + filtered_keys[0].nkeys); + goto out_close; + } + if (compare_mkts(expected, nexpected, filtered_keys, + filtered_keys[0].nkeys)) { + test_fail("got wrong keys back"); + goto out_close; + } + test_ok("filter keys: %s", tst); + +out_close: + close(sk); + memset(filter, 0, sizeof(struct tcp_ao_getsockopt)); +} + +static void filter_tests(void) +{ + struct tcp_ao_getsockopt original_keys[FILTER_TEST_NKEYS]; + struct tcp_ao_getsockopt expected_keys[FILTER_TEST_NKEYS]; + struct tcp_ao_getsockopt filter = {}; + int sk, f, nmatches; + socklen_t len; + + f = 2; + sk = prepare_test_keys(original_keys); + filter.rcvid = original_keys[f].rcvid; + filter.sndid = original_keys[f].sndid; + memcpy(&filter.addr, &original_keys[f].addr, + sizeof(original_keys[f].addr)); + filter.prefix = original_keys[f].prefix; + filter_keys_checked(sk, &filter, &original_keys[f], 1, + "by sndid, rcvid, address"); + + f = -1; + sk = prepare_test_keys(original_keys); + for (int i = 0; i < original_keys[0].nkeys; i++) { + if (original_keys[i].is_current) { + f = i; + break; + } + } + if (f < 0) + test_error("No current key after adding one"); + filter.is_current = 1; + filter_keys_checked(sk, &filter, &original_keys[f], 1, "by is_current"); + + f = -1; + sk = prepare_test_keys(original_keys); + for (int i = 0; i < original_keys[0].nkeys; i++) { + if (original_keys[i].is_rnext) { + f = i; + break; + } + } + if (f < 0) + test_error("No rnext key after adding one"); + filter.is_rnext = 1; + filter_keys_checked(sk, &filter, &original_keys[f], 1, "by is_rnext"); + + f = -1; + nmatches = 0; + sk = prepare_test_keys(original_keys); + for (int i = 0; i < original_keys[0].nkeys; i++) { + if (original_keys[i].sndid == 100) { + f = i; + memcpy(&expected_keys[nmatches], &original_keys[i], + sizeof(struct tcp_ao_getsockopt)); + nmatches++; + } + } + if (f < 0) + test_error("No key for sndid 100"); + if (nmatches != 2) + test_error("Should have 2 keys with sndid 100"); + filter.rcvid = original_keys[f].rcvid; + filter.sndid = original_keys[f].sndid; + filter.addr.ss_family = test_family; + filter_keys_checked(sk, &filter, expected_keys, nmatches, + "by sndid, rcvid"); + + sk = prepare_test_keys(original_keys); + filter.get_all = 1; + filter.nkeys = FILTER_TEST_NKEYS / 2; + len = sizeof(struct tcp_ao_getsockopt); + if (getsockopt(sk, IPPROTO_TCP, TCP_AO_GET_KEYS, &filter, &len)) + test_error("getsockopt"); + if (filter.nkeys == FILTER_TEST_NKEYS) + test_ok("filter keys: correct nkeys when in.nkeys < matches"); + else + test_fail("filter keys: wrong nkeys, expected %u got %u", + FILTER_TEST_NKEYS, filter.nkeys); +} + static void *client_fn(void *arg) { if (inet_pton(TEST_FAMILY, __TEST_CLIENT_IP(2), &tcp_md5_client) != 1) test_error("Can't convert ip address"); extend_tests(); einval_tests(); + filter_tests(); duplicate_tests(); - /* - * TODO: check getsockopt(TCP_AO_GET_KEYS) with different filters - * returning proper nr & keys; - */ return NULL; } int main(int argc, char *argv[]) { - test_init(121, client_fn, NULL); + test_init(126, client_fn, NULL); return 0; } -- cgit v1.2.3 From 11f0c8e0468a8bc625164f68dd5ff2a9436658db Mon Sep 17 00:00:00 2001 From: Dev Jain Date: Wed, 9 Oct 2024 10:44:23 +0530 Subject: selftests: Rename sigaltstack to generic signal Rename sigaltstack to generic signal directory, to allow adding more signal tests in the future. Signed-off-by: Dev Jain Reviewed-by: Mark Brown Acked-by: Shuah Khan Signed-off-by: Shuah Khan --- tools/testing/selftests/Makefile | 2 +- tools/testing/selftests/sigaltstack/.gitignore | 2 - tools/testing/selftests/sigaltstack/Makefile | 6 - .../selftests/sigaltstack/current_stack_pointer.h | 23 --- tools/testing/selftests/sigaltstack/sas.c | 197 --------------------- tools/testing/selftests/signal/.gitignore | 2 + tools/testing/selftests/signal/Makefile | 6 + .../selftests/signal/current_stack_pointer.h | 23 +++ tools/testing/selftests/signal/sas.c | 197 +++++++++++++++++++++ 9 files changed, 229 insertions(+), 229 deletions(-) delete mode 100644 tools/testing/selftests/sigaltstack/.gitignore delete mode 100644 tools/testing/selftests/sigaltstack/Makefile delete mode 100644 tools/testing/selftests/sigaltstack/current_stack_pointer.h delete mode 100644 tools/testing/selftests/sigaltstack/sas.c create mode 100644 tools/testing/selftests/signal/.gitignore create mode 100644 tools/testing/selftests/signal/Makefile create mode 100644 tools/testing/selftests/signal/current_stack_pointer.h create mode 100644 tools/testing/selftests/signal/sas.c (limited to 'tools') diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index b38199965f99..3cfad04d0b5c 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -90,7 +90,7 @@ TARGETS += rtc TARGETS += rust TARGETS += seccomp TARGETS += sgx -TARGETS += sigaltstack +TARGETS += signal TARGETS += size TARGETS += sparc64 TARGETS += splice diff --git a/tools/testing/selftests/sigaltstack/.gitignore b/tools/testing/selftests/sigaltstack/.gitignore deleted file mode 100644 index 50a19a8888ce..000000000000 --- a/tools/testing/selftests/sigaltstack/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -sas diff --git a/tools/testing/selftests/sigaltstack/Makefile b/tools/testing/selftests/sigaltstack/Makefile deleted file mode 100644 index 3e96d5d47036..000000000000 --- a/tools/testing/selftests/sigaltstack/Makefile +++ /dev/null @@ -1,6 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -CFLAGS = -Wall -TEST_GEN_PROGS = sas - -include ../lib.mk - diff --git a/tools/testing/selftests/sigaltstack/current_stack_pointer.h b/tools/testing/selftests/sigaltstack/current_stack_pointer.h deleted file mode 100644 index 09da8f1011ce..000000000000 --- a/tools/testing/selftests/sigaltstack/current_stack_pointer.h +++ /dev/null @@ -1,23 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ - -#if __alpha__ -register unsigned long sp asm("$30"); -#elif __arm__ || __aarch64__ || __csky__ || __m68k__ || __mips__ || __riscv -register unsigned long sp asm("sp"); -#elif __i386__ -register unsigned long sp asm("esp"); -#elif __loongarch64 -register unsigned long sp asm("$sp"); -#elif __powerpc__ -register unsigned long sp asm("r1"); -#elif __s390x__ -register unsigned long sp asm("%15"); -#elif __sh__ -register unsigned long sp asm("r15"); -#elif __x86_64__ -register unsigned long sp asm("rsp"); -#elif __XTENSA__ -register unsigned long sp asm("a1"); -#else -#error "implement current_stack_pointer equivalent" -#endif diff --git a/tools/testing/selftests/sigaltstack/sas.c b/tools/testing/selftests/sigaltstack/sas.c deleted file mode 100644 index 07227fab1cc9..000000000000 --- a/tools/testing/selftests/sigaltstack/sas.c +++ /dev/null @@ -1,197 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Stas Sergeev - * - * test sigaltstack(SS_ONSTACK | SS_AUTODISARM) - * If that succeeds, then swapcontext() can be used inside sighandler safely. - * - */ - -#define _GNU_SOURCE -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "../kselftest.h" -#include "current_stack_pointer.h" - -#ifndef SS_AUTODISARM -#define SS_AUTODISARM (1U << 31) -#endif - -#ifndef AT_MINSIGSTKSZ -#define AT_MINSIGSTKSZ 51 -#endif - -static unsigned int stack_size; -static void *sstack, *ustack; -static ucontext_t uc, sc; -static const char *msg = "[OK]\tStack preserved"; -static const char *msg2 = "[FAIL]\tStack corrupted"; -struct stk_data { - char msg[128]; - int flag; -}; - -void my_usr1(int sig, siginfo_t *si, void *u) -{ - char *aa; - int err; - stack_t stk; - struct stk_data *p; - - if (sp < (unsigned long)sstack || - sp >= (unsigned long)sstack + stack_size) { - ksft_exit_fail_msg("SP is not on sigaltstack\n"); - } - /* put some data on stack. other sighandler will try to overwrite it */ - aa = alloca(1024); - assert(aa); - p = (struct stk_data *)(aa + 512); - strcpy(p->msg, msg); - p->flag = 1; - ksft_print_msg("[RUN]\tsignal USR1\n"); - err = sigaltstack(NULL, &stk); - if (err) { - ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno)); - exit(EXIT_FAILURE); - } - if (stk.ss_flags != SS_DISABLE) - ksft_test_result_fail("tss_flags=%x, should be SS_DISABLE\n", - stk.ss_flags); - else - ksft_test_result_pass( - "sigaltstack is disabled in sighandler\n"); - swapcontext(&sc, &uc); - ksft_print_msg("%s\n", p->msg); - if (!p->flag) { - ksft_exit_fail_msg("[RUN]\tAborting\n"); - exit(EXIT_FAILURE); - } -} - -void my_usr2(int sig, siginfo_t *si, void *u) -{ - char *aa; - struct stk_data *p; - - ksft_print_msg("[RUN]\tsignal USR2\n"); - aa = alloca(1024); - /* dont run valgrind on this */ - /* try to find the data stored by previous sighandler */ - p = memmem(aa, 1024, msg, strlen(msg)); - if (p) { - ksft_test_result_fail("sigaltstack re-used\n"); - /* corrupt the data */ - strcpy(p->msg, msg2); - /* tell other sighandler that his data is corrupted */ - p->flag = 0; - } -} - -static void switch_fn(void) -{ - ksft_print_msg("[RUN]\tswitched to user ctx\n"); - raise(SIGUSR2); - setcontext(&sc); -} - -int main(void) -{ - struct sigaction act; - stack_t stk; - int err; - - /* Make sure more than the required minimum. */ - stack_size = getauxval(AT_MINSIGSTKSZ) + SIGSTKSZ; - ksft_print_msg("[NOTE]\tthe stack size is %u\n", stack_size); - - ksft_print_header(); - ksft_set_plan(3); - - sigemptyset(&act.sa_mask); - act.sa_flags = SA_ONSTACK | SA_SIGINFO; - act.sa_sigaction = my_usr1; - sigaction(SIGUSR1, &act, NULL); - act.sa_sigaction = my_usr2; - sigaction(SIGUSR2, &act, NULL); - sstack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0); - if (sstack == MAP_FAILED) { - ksft_exit_fail_msg("mmap() - %s\n", strerror(errno)); - return EXIT_FAILURE; - } - - err = sigaltstack(NULL, &stk); - if (err) { - ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno)); - exit(EXIT_FAILURE); - } - if (stk.ss_flags == SS_DISABLE) { - ksft_test_result_pass( - "Initial sigaltstack state was SS_DISABLE\n"); - } else { - ksft_exit_fail_msg("Initial sigaltstack state was %x; " - "should have been SS_DISABLE\n", stk.ss_flags); - return EXIT_FAILURE; - } - - stk.ss_sp = sstack; - stk.ss_size = stack_size; - stk.ss_flags = SS_ONSTACK | SS_AUTODISARM; - err = sigaltstack(&stk, NULL); - if (err) { - if (errno == EINVAL) { - ksft_test_result_skip( - "[NOTE]\tThe running kernel doesn't support SS_AUTODISARM\n"); - /* - * If test cases for the !SS_AUTODISARM variant were - * added, we could still run them. We don't have any - * test cases like that yet, so just exit and report - * success. - */ - return 0; - } else { - ksft_exit_fail_msg( - "sigaltstack(SS_ONSTACK | SS_AUTODISARM) %s\n", - strerror(errno)); - return EXIT_FAILURE; - } - } - - ustack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0); - if (ustack == MAP_FAILED) { - ksft_exit_fail_msg("mmap() - %s\n", strerror(errno)); - return EXIT_FAILURE; - } - getcontext(&uc); - uc.uc_link = NULL; - uc.uc_stack.ss_sp = ustack; - uc.uc_stack.ss_size = stack_size; - makecontext(&uc, switch_fn, 0); - raise(SIGUSR1); - - err = sigaltstack(NULL, &stk); - if (err) { - ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno)); - exit(EXIT_FAILURE); - } - if (stk.ss_flags != SS_AUTODISARM) { - ksft_exit_fail_msg("ss_flags=%x, should be SS_AUTODISARM\n", - stk.ss_flags); - exit(EXIT_FAILURE); - } - ksft_test_result_pass( - "sigaltstack is still SS_AUTODISARM after signal\n"); - - ksft_exit_pass(); - return 0; -} diff --git a/tools/testing/selftests/signal/.gitignore b/tools/testing/selftests/signal/.gitignore new file mode 100644 index 000000000000..50a19a8888ce --- /dev/null +++ b/tools/testing/selftests/signal/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +sas diff --git a/tools/testing/selftests/signal/Makefile b/tools/testing/selftests/signal/Makefile new file mode 100644 index 000000000000..3e96d5d47036 --- /dev/null +++ b/tools/testing/selftests/signal/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0-only +CFLAGS = -Wall +TEST_GEN_PROGS = sas + +include ../lib.mk + diff --git a/tools/testing/selftests/signal/current_stack_pointer.h b/tools/testing/selftests/signal/current_stack_pointer.h new file mode 100644 index 000000000000..09da8f1011ce --- /dev/null +++ b/tools/testing/selftests/signal/current_stack_pointer.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#if __alpha__ +register unsigned long sp asm("$30"); +#elif __arm__ || __aarch64__ || __csky__ || __m68k__ || __mips__ || __riscv +register unsigned long sp asm("sp"); +#elif __i386__ +register unsigned long sp asm("esp"); +#elif __loongarch64 +register unsigned long sp asm("$sp"); +#elif __powerpc__ +register unsigned long sp asm("r1"); +#elif __s390x__ +register unsigned long sp asm("%15"); +#elif __sh__ +register unsigned long sp asm("r15"); +#elif __x86_64__ +register unsigned long sp asm("rsp"); +#elif __XTENSA__ +register unsigned long sp asm("a1"); +#else +#error "implement current_stack_pointer equivalent" +#endif diff --git a/tools/testing/selftests/signal/sas.c b/tools/testing/selftests/signal/sas.c new file mode 100644 index 000000000000..07227fab1cc9 --- /dev/null +++ b/tools/testing/selftests/signal/sas.c @@ -0,0 +1,197 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Stas Sergeev + * + * test sigaltstack(SS_ONSTACK | SS_AUTODISARM) + * If that succeeds, then swapcontext() can be used inside sighandler safely. + * + */ + +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../kselftest.h" +#include "current_stack_pointer.h" + +#ifndef SS_AUTODISARM +#define SS_AUTODISARM (1U << 31) +#endif + +#ifndef AT_MINSIGSTKSZ +#define AT_MINSIGSTKSZ 51 +#endif + +static unsigned int stack_size; +static void *sstack, *ustack; +static ucontext_t uc, sc; +static const char *msg = "[OK]\tStack preserved"; +static const char *msg2 = "[FAIL]\tStack corrupted"; +struct stk_data { + char msg[128]; + int flag; +}; + +void my_usr1(int sig, siginfo_t *si, void *u) +{ + char *aa; + int err; + stack_t stk; + struct stk_data *p; + + if (sp < (unsigned long)sstack || + sp >= (unsigned long)sstack + stack_size) { + ksft_exit_fail_msg("SP is not on sigaltstack\n"); + } + /* put some data on stack. other sighandler will try to overwrite it */ + aa = alloca(1024); + assert(aa); + p = (struct stk_data *)(aa + 512); + strcpy(p->msg, msg); + p->flag = 1; + ksft_print_msg("[RUN]\tsignal USR1\n"); + err = sigaltstack(NULL, &stk); + if (err) { + ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + if (stk.ss_flags != SS_DISABLE) + ksft_test_result_fail("tss_flags=%x, should be SS_DISABLE\n", + stk.ss_flags); + else + ksft_test_result_pass( + "sigaltstack is disabled in sighandler\n"); + swapcontext(&sc, &uc); + ksft_print_msg("%s\n", p->msg); + if (!p->flag) { + ksft_exit_fail_msg("[RUN]\tAborting\n"); + exit(EXIT_FAILURE); + } +} + +void my_usr2(int sig, siginfo_t *si, void *u) +{ + char *aa; + struct stk_data *p; + + ksft_print_msg("[RUN]\tsignal USR2\n"); + aa = alloca(1024); + /* dont run valgrind on this */ + /* try to find the data stored by previous sighandler */ + p = memmem(aa, 1024, msg, strlen(msg)); + if (p) { + ksft_test_result_fail("sigaltstack re-used\n"); + /* corrupt the data */ + strcpy(p->msg, msg2); + /* tell other sighandler that his data is corrupted */ + p->flag = 0; + } +} + +static void switch_fn(void) +{ + ksft_print_msg("[RUN]\tswitched to user ctx\n"); + raise(SIGUSR2); + setcontext(&sc); +} + +int main(void) +{ + struct sigaction act; + stack_t stk; + int err; + + /* Make sure more than the required minimum. */ + stack_size = getauxval(AT_MINSIGSTKSZ) + SIGSTKSZ; + ksft_print_msg("[NOTE]\tthe stack size is %u\n", stack_size); + + ksft_print_header(); + ksft_set_plan(3); + + sigemptyset(&act.sa_mask); + act.sa_flags = SA_ONSTACK | SA_SIGINFO; + act.sa_sigaction = my_usr1; + sigaction(SIGUSR1, &act, NULL); + act.sa_sigaction = my_usr2; + sigaction(SIGUSR2, &act, NULL); + sstack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0); + if (sstack == MAP_FAILED) { + ksft_exit_fail_msg("mmap() - %s\n", strerror(errno)); + return EXIT_FAILURE; + } + + err = sigaltstack(NULL, &stk); + if (err) { + ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + if (stk.ss_flags == SS_DISABLE) { + ksft_test_result_pass( + "Initial sigaltstack state was SS_DISABLE\n"); + } else { + ksft_exit_fail_msg("Initial sigaltstack state was %x; " + "should have been SS_DISABLE\n", stk.ss_flags); + return EXIT_FAILURE; + } + + stk.ss_sp = sstack; + stk.ss_size = stack_size; + stk.ss_flags = SS_ONSTACK | SS_AUTODISARM; + err = sigaltstack(&stk, NULL); + if (err) { + if (errno == EINVAL) { + ksft_test_result_skip( + "[NOTE]\tThe running kernel doesn't support SS_AUTODISARM\n"); + /* + * If test cases for the !SS_AUTODISARM variant were + * added, we could still run them. We don't have any + * test cases like that yet, so just exit and report + * success. + */ + return 0; + } else { + ksft_exit_fail_msg( + "sigaltstack(SS_ONSTACK | SS_AUTODISARM) %s\n", + strerror(errno)); + return EXIT_FAILURE; + } + } + + ustack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0); + if (ustack == MAP_FAILED) { + ksft_exit_fail_msg("mmap() - %s\n", strerror(errno)); + return EXIT_FAILURE; + } + getcontext(&uc); + uc.uc_link = NULL; + uc.uc_stack.ss_sp = ustack; + uc.uc_stack.ss_size = stack_size; + makecontext(&uc, switch_fn, 0); + raise(SIGUSR1); + + err = sigaltstack(NULL, &stk); + if (err) { + ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + if (stk.ss_flags != SS_AUTODISARM) { + ksft_exit_fail_msg("ss_flags=%x, should be SS_AUTODISARM\n", + stk.ss_flags); + exit(EXIT_FAILURE); + } + ksft_test_result_pass( + "sigaltstack is still SS_AUTODISARM after signal\n"); + + ksft_exit_pass(); + return 0; +} -- cgit v1.2.3 From cecc795329fc3e0ea2e84567ee57570cc050cf6b Mon Sep 17 00:00:00 2001 From: Dev Jain Date: Wed, 9 Oct 2024 10:44:24 +0530 Subject: selftests: Add a test mangling with uc_sigmask The test is motivated by the following observation: Raise a signal, jump to signal handler. The ucontext_t structure dumped by kernel to userspace has a uc_sigmask field having the mask of blocked signals. If you run a fresh minimalistic program doing this, this field is empty, even if you block some signals while registering the handler with sigaction(). Here is what the man-pages have to say: sigaction(2): "sa_mask specifies a mask of signals which should be blocked (i.e., added to the signal mask of the thread in which the signal handler is invoked) during execution of the signal handler. In addition, the signal which triggered the handler will be blocked, unless the SA_NODEFER flag is used." signal(7): Under "Execution of signal handlers", (1.3) implies: "The thread's current signal mask is accessible via the ucontext_t object that is pointed to by the third argument of the signal handler." But, (1.4) states: "Any signals specified in act->sa_mask when registering the handler with sigprocmask(2) are added to the thread's signal mask. The signal being delivered is also added to the signal mask, unless SA_NODEFER was specified when registering the handler. These signals are thus blocked while the handler executes." There clearly is no distinction being made in the man pages between "Thread's signal mask" and ucontext_t; this logically should imply that a signal blocked by populating struct sigaction should be visible in ucontext_t. Here is what the kernel code does (for Aarch64): do_signal() -> handle_signal() -> sigmask_to_save(), which returns ¤t->blocked, is passed to setup_rt_frame() -> setup_sigframe() -> __copy_to_user(). Hence, ¤t->blocked is copied to ucontext_t exposed to userspace. Returning back to handle_signal(), signal_setup_done() -> signal_delivered() -> sigorsets() and set_current_blocked() are responsible for using information from struct ksignal ksig, which was populated through the sigaction() system call in kernel/signal.c: copy_from_user(&new_sa.sa, act, sizeof(new_sa.sa)), to update ¤t->blocked; hence, the set of blocked signals for the current thread is updated AFTER the kernel dumps ucontext_t to userspace. Assuming that the above is indeed the intended behaviour, because it semantically makes sense, since the signals blocked using sigaction() remain blocked only till the execution of the handler, and not in the context present before jumping to the handler (but nothing can be confirmed from the man-pages), this patch introduces a test for mangling with uc_sigmask. The test asserts the relation between blocked signal, delivered signal, and ucontext. The ucontext is mangled with, by adding a signal mask to it; on return from the handler, the thread must block the corresponding signal. In the test description, I have also described signal delivery and blockage, for ease of understanding what the test does. Signed-off-by: Dev Jain Reviewed-by: Mark Brown Signed-off-by: Shuah Khan --- tools/testing/selftests/signal/.gitignore | 1 + tools/testing/selftests/signal/Makefile | 3 +- tools/testing/selftests/signal/mangle_uc_sigmask.c | 184 +++++++++++++++++++++ 3 files changed, 187 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/signal/mangle_uc_sigmask.c (limited to 'tools') diff --git a/tools/testing/selftests/signal/.gitignore b/tools/testing/selftests/signal/.gitignore index 50a19a8888ce..3f339865a3b6 100644 --- a/tools/testing/selftests/signal/.gitignore +++ b/tools/testing/selftests/signal/.gitignore @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only +mangle_uc_sigmask sas diff --git a/tools/testing/selftests/signal/Makefile b/tools/testing/selftests/signal/Makefile index 3e96d5d47036..e0bf7058d19c 100644 --- a/tools/testing/selftests/signal/Makefile +++ b/tools/testing/selftests/signal/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only CFLAGS = -Wall -TEST_GEN_PROGS = sas +TEST_GEN_PROGS = mangle_uc_sigmask +TEST_GEN_PROGS += sas include ../lib.mk diff --git a/tools/testing/selftests/signal/mangle_uc_sigmask.c b/tools/testing/selftests/signal/mangle_uc_sigmask.c new file mode 100644 index 000000000000..b79ab92178a8 --- /dev/null +++ b/tools/testing/selftests/signal/mangle_uc_sigmask.c @@ -0,0 +1,184 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2024 ARM Ltd. + * + * Author: Dev Jain + * + * Test describing a clear distinction between signal states - delivered and + * blocked, and their relation with ucontext. + * + * A process can request blocking of a signal by masking it into its set of + * blocked signals; such a signal, when sent to the process by the kernel, + * will get blocked by the process and it may later unblock it and take an + * action. At that point, the signal will be delivered. + * + * We test the following functionalities of the kernel: + * + * ucontext_t describes the interrupted context of the thread; this implies + * that, in case of registering a handler and catching the corresponding + * signal, that state is before what was jumping into the handler. + * + * The thread's mask of blocked signals can be permanently changed, i.e, not + * just during the execution of the handler, by mangling with uc_sigmask + * from inside the handler. + * + * Assume that we block the set of signals, S1, by sigaction(), and say, the + * signal for which the handler was installed, is S2. When S2 is sent to the + * program, it will be considered "delivered", since we will act on the + * signal and jump to the handler. Any instances of S1 or S2 raised, while the + * program is executing inside the handler, will be blocked; they will be + * delivered immediately upon termination of the handler. + * + * For standard signals (also see real-time signals in the man page), multiple + * blocked instances of the same signal are not queued; such a signal will + * be delivered just once. + */ + +#include +#include +#include +#include + +#include "../kselftest.h" + +void handler_verify_ucontext(int signo, siginfo_t *info, void *uc) +{ + int ret; + + /* Kernel dumps ucontext with USR2 blocked */ + ret = sigismember(&(((ucontext_t *)uc)->uc_sigmask), SIGUSR2); + ksft_test_result(ret == 1, "USR2 blocked in ucontext\n"); + + /* + * USR2 is blocked; can be delivered neither here, nor after + * exit from handler + */ + if (raise(SIGUSR2)) + ksft_exit_fail_perror("raise"); +} + +void handler_segv(int signo, siginfo_t *info, void *uc) +{ + /* + * Three cases possible: + * 1. Program already terminated due to segmentation fault. + * 2. SEGV was blocked even after returning from handler_usr. + * 3. SEGV was delivered on returning from handler_usr. + * The last option must happen. + */ + ksft_test_result_pass("SEGV delivered\n"); +} + +static int cnt; + +void handler_usr(int signo, siginfo_t *info, void *uc) +{ + int ret; + + /* + * Break out of infinite recursion caused by raise(SIGUSR1) invoked + * from inside the handler + */ + ++cnt; + if (cnt > 1) + return; + + /* SEGV blocked during handler execution, delivered on return */ + if (raise(SIGSEGV)) + ksft_exit_fail_perror("raise"); + + ksft_print_msg("SEGV bypassed successfully\n"); + + /* + * Signal responsible for handler invocation is blocked by default; + * delivered on return, leading to recursion + */ + if (raise(SIGUSR1)) + ksft_exit_fail_perror("raise"); + + ksft_test_result(cnt == 1, + "USR1 is blocked, cannot invoke handler right now\n"); + + /* Raise USR1 again; only one instance must be delivered upon exit */ + if (raise(SIGUSR1)) + ksft_exit_fail_perror("raise"); + + /* SEGV has been blocked in sa_mask, but ucontext is empty */ + ret = sigismember(&(((ucontext_t *)uc)->uc_sigmask), SIGSEGV); + ksft_test_result(ret == 0, "SEGV not blocked in ucontext\n"); + + /* USR1 has been blocked, but ucontext is empty */ + ret = sigismember(&(((ucontext_t *)uc)->uc_sigmask), SIGUSR1); + ksft_test_result(ret == 0, "USR1 not blocked in ucontext\n"); + + /* + * Mangle ucontext; this will be copied back into ¤t->blocked + * on return from the handler. + */ + if (sigaddset(&((ucontext_t *)uc)->uc_sigmask, SIGUSR2)) + ksft_exit_fail_perror("sigaddset"); +} + +int main(int argc, char *argv[]) +{ + struct sigaction act, act2; + sigset_t set, oldset; + + ksft_print_header(); + ksft_set_plan(7); + + act.sa_flags = SA_SIGINFO; + act.sa_sigaction = &handler_usr; + + /* Add SEGV to blocked mask */ + if (sigemptyset(&act.sa_mask) || sigaddset(&act.sa_mask, SIGSEGV) + || (sigismember(&act.sa_mask, SIGSEGV) != 1)) + ksft_exit_fail_msg("Cannot add SEGV to blocked mask\n"); + + if (sigaction(SIGUSR1, &act, NULL)) + ksft_exit_fail_perror("Cannot install handler"); + + act2.sa_flags = SA_SIGINFO; + act2.sa_sigaction = &handler_segv; + + if (sigaction(SIGSEGV, &act2, NULL)) + ksft_exit_fail_perror("Cannot install handler"); + + /* Invoke handler */ + if (raise(SIGUSR1)) + ksft_exit_fail_perror("raise"); + + /* USR1 must not be queued */ + ksft_test_result(cnt == 2, "handler invoked only twice\n"); + + /* Mangled ucontext implies USR2 is blocked for current thread */ + if (raise(SIGUSR2)) + ksft_exit_fail_perror("raise"); + + ksft_print_msg("USR2 bypassed successfully\n"); + + act.sa_sigaction = &handler_verify_ucontext; + if (sigaction(SIGUSR1, &act, NULL)) + ksft_exit_fail_perror("Cannot install handler"); + + if (raise(SIGUSR1)) + ksft_exit_fail_perror("raise"); + + /* + * Raising USR2 in handler_verify_ucontext is redundant since it + * is blocked + */ + ksft_print_msg("USR2 still blocked on return from handler\n"); + + /* Confirm USR2 blockage by sigprocmask() too */ + if (sigemptyset(&set)) + ksft_exit_fail_perror("sigemptyset"); + + if (sigprocmask(SIG_BLOCK, &set, &oldset)) + ksft_exit_fail_perror("sigprocmask"); + + ksft_test_result(sigismember(&oldset, SIGUSR2) == 1, + "USR2 present in ¤t->blocked\n"); + + ksft_finished(); +} -- cgit v1.2.3 From 42602e3a06f8e5b9a059344e305c9bee2dcc87c8 Mon Sep 17 00:00:00 2001 From: Jason Xing Date: Tue, 29 Oct 2024 15:46:27 +0800 Subject: bpf: handle implicit declaration of function gettid in bpf_iter.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As we can see from the title, when I compiled the selftests/bpf, I saw the error: implicit declaration of function ‘gettid’ ; did you mean ‘getgid’? [-Werror=implicit-function-declaration] skel->bss->tid = gettid(); ^~~~~~ getgid Directly call the syscall solves this issue. Signed-off-by: Jason Xing Reviewed-by: Alan Maguire Tested-by: Alan Maguire Link: https://lore.kernel.org/r/20241029074627.80289-1-kerneljasonxing@gmail.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/prog_tests/bpf_iter.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c index f0a3a9c18e9e..9006549a1294 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c @@ -226,7 +226,7 @@ static void test_task_common_nocheck(struct bpf_iter_attach_opts *opts, ASSERT_OK(pthread_create(&thread_id, NULL, &do_nothing_wait, NULL), "pthread_create"); - skel->bss->tid = gettid(); + skel->bss->tid = syscall(SYS_gettid); do_dummy_read_opts(skel->progs.dump_task, opts); @@ -255,10 +255,10 @@ static void *run_test_task_tid(void *arg) union bpf_iter_link_info linfo; int num_unknown_tid, num_known_tid; - ASSERT_NEQ(getpid(), gettid(), "check_new_thread_id"); + ASSERT_NEQ(getpid(), syscall(SYS_gettid), "check_new_thread_id"); memset(&linfo, 0, sizeof(linfo)); - linfo.task.tid = gettid(); + linfo.task.tid = syscall(SYS_gettid); opts.link_info = &linfo; opts.link_info_len = sizeof(linfo); test_task_common(&opts, 0, 1); -- cgit v1.2.3 From 9a1036389fa25cf90d58e3ae1bb0b1ad877ef1c8 Mon Sep 17 00:00:00 2001 From: Karan Sanghavi Date: Tue, 22 Oct 2024 18:30:52 +0000 Subject: selftests: tc-testing: Fix typo error Correct the typo errors in json files - "diffferent" is corrected to "different". - "muliple" and "miltiple" is corrected to "multiple". Reviewed-by: Simon Horman Reviewed-by: Shuah Khan Signed-off-by: Karan Sanghavi Link: https://patch.msgid.link/20241022-multiple_spell_error-v2-1-7e5036506fe5@gmail.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/tc-testing/tc-tests/filters/basic.json | 6 +++--- tools/testing/selftests/tc-testing/tc-tests/filters/cgroup.json | 6 +++--- tools/testing/selftests/tc-testing/tc-tests/filters/flow.json | 2 +- tools/testing/selftests/tc-testing/tc-tests/filters/route.json | 2 +- 4 files changed, 8 insertions(+), 8 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/tc-testing/tc-tests/filters/basic.json b/tools/testing/selftests/tc-testing/tc-tests/filters/basic.json index d1278de8ebc3..c9309a44a87e 100644 --- a/tools/testing/selftests/tc-testing/tc-tests/filters/basic.json +++ b/tools/testing/selftests/tc-testing/tc-tests/filters/basic.json @@ -67,7 +67,7 @@ }, { "id": "4943", - "name": "Add basic filter with cmp ematch u32/link layer and miltiple actions", + "name": "Add basic filter with cmp ematch u32/link layer and multiple actions", "category": [ "filter", "basic" @@ -155,7 +155,7 @@ }, { "id": "32d8", - "name": "Add basic filter with cmp ematch u32/network layer and miltiple actions", + "name": "Add basic filter with cmp ematch u32/network layer and multiple actions", "category": [ "filter", "basic" @@ -243,7 +243,7 @@ }, { "id": "62d7", - "name": "Add basic filter with cmp ematch u32/transport layer and miltiple actions", + "name": "Add basic filter with cmp ematch u32/transport layer and multiple actions", "category": [ "filter", "basic" diff --git a/tools/testing/selftests/tc-testing/tc-tests/filters/cgroup.json b/tools/testing/selftests/tc-testing/tc-tests/filters/cgroup.json index 03723cf84379..35c9a7dbe1c4 100644 --- a/tools/testing/selftests/tc-testing/tc-tests/filters/cgroup.json +++ b/tools/testing/selftests/tc-testing/tc-tests/filters/cgroup.json @@ -67,7 +67,7 @@ }, { "id": "0234", - "name": "Add cgroup filter with cmp ematch u32/link layer and miltiple actions", + "name": "Add cgroup filter with cmp ematch u32/link layer and multiple actions", "category": [ "filter", "cgroup" @@ -155,7 +155,7 @@ }, { "id": "2733", - "name": "Add cgroup filter with cmp ematch u32/network layer and miltiple actions", + "name": "Add cgroup filter with cmp ematch u32/network layer and multiple actions", "category": [ "filter", "cgroup" @@ -1189,7 +1189,7 @@ }, { "id": "4319", - "name": "Replace cgroup filter with diffferent match", + "name": "Replace cgroup filter with different match", "category": [ "filter", "cgroup" diff --git a/tools/testing/selftests/tc-testing/tc-tests/filters/flow.json b/tools/testing/selftests/tc-testing/tc-tests/filters/flow.json index 58189327f644..996448afe31b 100644 --- a/tools/testing/selftests/tc-testing/tc-tests/filters/flow.json +++ b/tools/testing/selftests/tc-testing/tc-tests/filters/flow.json @@ -507,7 +507,7 @@ }, { "id": "4341", - "name": "Add flow filter with muliple ops", + "name": "Add flow filter with multiple ops", "category": [ "filter", "flow" diff --git a/tools/testing/selftests/tc-testing/tc-tests/filters/route.json b/tools/testing/selftests/tc-testing/tc-tests/filters/route.json index 8d8de8f65aef..05cedca67cca 100644 --- a/tools/testing/selftests/tc-testing/tc-tests/filters/route.json +++ b/tools/testing/selftests/tc-testing/tc-tests/filters/route.json @@ -111,7 +111,7 @@ }, { "id": "7994", - "name": "Add route filter with miltiple actions", + "name": "Add route filter with multiple actions", "category": [ "filter", "route" -- cgit v1.2.3 From 0ab7cd1f18648ab50c4685553ca92e8cdc4a42da Mon Sep 17 00:00:00 2001 From: Vincent Li Date: Fri, 25 Oct 2024 03:19:52 +0000 Subject: selftests/bpf: remove xdp_synproxy IP_DF check In real world production websites, the IP_DF flag is not always set for each packet from these websites. the IP_DF flag check breaks Internet connection to these websites for home based firewall like BPFire when XDP synproxy program is attached to firewall Internet facing side interface. see [0] [0] https://github.com/vincentmli/BPFire/issues/59 Signed-off-by: Vincent Li Link: https://lore.kernel.org/r/20241025031952.1351150-1-vincent.mc.li@gmail.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c b/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c index f8f5dc9f72b8..62b8e29ced9f 100644 --- a/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c +++ b/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c @@ -21,7 +21,6 @@ #define tcp_flag_word(tp) (((union tcp_word_hdr *)(tp))->words[3]) -#define IP_DF 0x4000 #define IP_MF 0x2000 #define IP_OFFSET 0x1fff @@ -442,7 +441,7 @@ static __always_inline int tcp_lookup(void *ctx, struct header_pointers *hdr, bo /* TCP doesn't normally use fragments, and XDP can't reassemble * them. */ - if ((hdr->ipv4->frag_off & bpf_htons(IP_DF | IP_MF | IP_OFFSET)) != bpf_htons(IP_DF)) + if ((hdr->ipv4->frag_off & bpf_htons(IP_MF | IP_OFFSET)) != 0) return XDP_DROP; tup.ipv4.saddr = hdr->ipv4->saddr; -- cgit v1.2.3 From 74975e1303a326bba6edb2136e2050aa0a735f1b Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Tue, 29 Oct 2024 11:40:45 -0700 Subject: libbpf: start v1.6 development cycle With libbpf v1.5.0 release out, start v1.6 dev cycle. Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241029184045.581537-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/libbpf.map | 3 +++ tools/lib/bpf/libbpf_version.h | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index f40ccc2946e7..54b6f312cfa8 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -430,3 +430,6 @@ LIBBPF_1.5.0 { ring__consume_n; ring_buffer__consume_n; } LIBBPF_1.4.0; + +LIBBPF_1.6.0 { +} LIBBPF_1.5.0; diff --git a/tools/lib/bpf/libbpf_version.h b/tools/lib/bpf/libbpf_version.h index d6e5eff967cb..28c58fb17250 100644 --- a/tools/lib/bpf/libbpf_version.h +++ b/tools/lib/bpf/libbpf_version.h @@ -4,6 +4,6 @@ #define __LIBBPF_VERSION_H #define LIBBPF_MAJOR_VERSION 1 -#define LIBBPF_MINOR_VERSION 5 +#define LIBBPF_MINOR_VERSION 6 #endif /* __LIBBPF_VERSION_H */ -- cgit v1.2.3 From 19966d792b9e6b055aeb2f0e573b4d4573d5e15b Mon Sep 17 00:00:00 2001 From: Graham Woodward Date: Fri, 25 Oct 2024 15:30:06 +0100 Subject: perf arm-spe: Set sample.addr to target address for instruction sample For an instruction sample, assign the target address to the field 'to_ip'. If it is a non-branch record, to_ip will be 0, presenting a non-valid target address. Signed-off-by: Graham Woodward Reviewed-by: James Clark Tested-by: Leo Yan Cc: nd@arm.com Cc: mike.leach@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20241025143009.25419-2-graham.woodward@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 856cc36f33d7..49b763807360 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -418,7 +418,7 @@ static int arm_spe__synth_instruction_sample(struct arm_spe_queue *speq, sample.id = spe_events_id; sample.stream_id = spe_events_id; - sample.addr = record->virt_addr; + sample.addr = record->to_ip; sample.phys_addr = record->phys_addr; sample.data_src = data_src; sample.period = spe->instructions_sample_period; -- cgit v1.2.3 From c1b67c85108f99af0a80aa9e59a2b94ad95428d7 Mon Sep 17 00:00:00 2001 From: Graham Woodward Date: Fri, 25 Oct 2024 15:30:07 +0100 Subject: perf arm-spe: Use ARM_SPE_OP_BRANCH_ERET when synthesizing branches Instead of checking the type for just branch misses, we can instead check for the OP_BRANCH_ERET and synthesise branches as well as branch misses. Signed-off-by: Graham Woodward Reviewed-by: James Clark Tested-by: Leo Yan Cc: nd@arm.com Cc: mike.leach@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20241025143009.25419-3-graham.woodward@arm.com Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index 49b763807360..e60e21d24735 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -68,7 +68,7 @@ struct arm_spe { u64 llc_access_id; u64 tlb_miss_id; u64 tlb_access_id; - u64 branch_miss_id; + u64 branch_id; u64 remote_access_id; u64 memory_id; u64 instructions_id; @@ -672,8 +672,8 @@ static int arm_spe_sample(struct arm_spe_queue *speq) } } - if (spe->sample_branch && (record->type & ARM_SPE_BRANCH_MISS)) { - err = arm_spe__synth_branch_sample(speq, spe->branch_miss_id); + if (spe->sample_branch && (record->op & ARM_SPE_OP_BRANCH_ERET)) { + err = arm_spe__synth_branch_sample(speq, spe->branch_id); if (err) return err; } @@ -1385,12 +1385,12 @@ arm_spe_synth_events(struct arm_spe *spe, struct perf_session *session) if (spe->synth_opts.branches) { spe->sample_branch = true; - /* Branch miss */ + /* Branch */ err = perf_session__deliver_synth_attr_event(session, &attr, id); if (err) return err; - spe->branch_miss_id = id; - arm_spe_set_event_name(evlist, id, "branch-miss"); + spe->branch_id = id; + arm_spe_set_event_name(evlist, id, "branch"); id += 1; } -- cgit v1.2.3 From edff8dad3f9a483259140fb814586b39da430a38 Mon Sep 17 00:00:00 2001 From: Graham Woodward Date: Fri, 25 Oct 2024 15:30:08 +0100 Subject: perf arm-spe: Correctly set sample flags Set flags on all synthesized instruction and branch samples. Signed-off-by: Graham Woodward Reviewed-by: James Clark Tested-by: Leo Yan Cc: nd@arm.com Cc: mike.leach@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20241025143009.25419-4-graham.woodward@arm.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-script.c | 1 + tools/perf/util/arm-spe.c | 17 +++++++++++++++++ tools/perf/util/event.h | 1 + 3 files changed, 19 insertions(+) (limited to 'tools') diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 8c5d5cecfba4..6b6d4472db6e 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1728,6 +1728,7 @@ static struct { {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_END, "tr end"}, {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_VMENTRY, "vmentry"}, {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_VMEXIT, "vmexit"}, + {PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_BRANCH_MISS, "br miss"}, {0, NULL} }; diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index e60e21d24735..a291a412f6a1 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -100,6 +100,7 @@ struct arm_spe_queue { u64 timestamp; struct thread *thread; u64 period_instructions; + u32 flags; }; static void arm_spe_dump(struct arm_spe *spe __maybe_unused, @@ -394,6 +395,7 @@ static int arm_spe__synth_branch_sample(struct arm_spe_queue *speq, sample.stream_id = spe_events_id; sample.addr = record->to_ip; sample.weight = record->latency; + sample.flags = speq->flags; return arm_spe_deliver_synth_event(spe, speq, event, &sample); } @@ -423,6 +425,7 @@ static int arm_spe__synth_instruction_sample(struct arm_spe_queue *speq, sample.data_src = data_src; sample.period = spe->instructions_sample_period; sample.weight = record->latency; + sample.flags = speq->flags; return arm_spe_deliver_synth_event(spe, speq, event, &sample); } @@ -440,6 +443,19 @@ static const struct midr_range common_ds_encoding_cpus[] = { {}, }; +static void arm_spe__sample_flags(struct arm_spe_queue *speq) +{ + const struct arm_spe_record *record = &speq->decoder->record; + + speq->flags = 0; + if (record->op & ARM_SPE_OP_BRANCH_ERET) { + speq->flags = PERF_IP_FLAG_BRANCH; + + if (record->type & ARM_SPE_BRANCH_MISS) + speq->flags |= PERF_IP_FLAG_BRANCH_MISS; + } +} + static void arm_spe__synth_data_source_common(const struct arm_spe_record *record, union perf_mem_data_src *data_src) { @@ -622,6 +638,7 @@ static int arm_spe_sample(struct arm_spe_queue *speq) u64 data_src; int err; + arm_spe__sample_flags(speq); data_src = arm_spe__synth_data_source(speq, record); if (spe->sample_flc) { diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index f8742e6230a5..2744c54f404e 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -66,6 +66,7 @@ enum { PERF_IP_FLAG_VMEXIT = 1ULL << 12, PERF_IP_FLAG_INTR_DISABLE = 1ULL << 13, PERF_IP_FLAG_INTR_TOGGLE = 1ULL << 14, + PERF_IP_FLAG_BRANCH_MISS = 1ULL << 15, }; #define PERF_IP_FLAG_CHARS "bcrosyiABExghDt" -- cgit v1.2.3 From 35f5aa9ccc83f4a4171cdb6ba023e514e2b2ecff Mon Sep 17 00:00:00 2001 From: Graham Woodward Date: Fri, 25 Oct 2024 15:30:09 +0100 Subject: perf arm-spe: Update --itrace help text The --itrace help now needs updating to reflect that the --itrace=b argument sythesises branches as well as branch misses. Signed-off-by: Graham Woodward Reviewed-by: James Clark Tested-by: Leo Yan Cc: nd@arm.com Cc: mike.leach@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20241025143009.25419-5-graham.woodward@arm.com Signed-off-by: Namhyung Kim --- tools/perf/Documentation/itrace.txt | 2 +- tools/perf/Documentation/perf-arm-spe.txt | 2 +- tools/perf/util/auxtrace.h | 3 +-- 3 files changed, 3 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt index 19cc179be9a7..40476b227f8d 100644 --- a/tools/perf/Documentation/itrace.txt +++ b/tools/perf/Documentation/itrace.txt @@ -1,6 +1,6 @@ i synthesize instructions events y synthesize cycles events - b synthesize branches events (branch misses for Arm SPE) + b synthesize branches events c synthesize branches events (calls only) r synthesize branches events (returns only) x synthesize transactions events diff --git a/tools/perf/Documentation/perf-arm-spe.txt b/tools/perf/Documentation/perf-arm-spe.txt index 0a3eda482307..de2b0b479249 100644 --- a/tools/perf/Documentation/perf-arm-spe.txt +++ b/tools/perf/Documentation/perf-arm-spe.txt @@ -187,7 +187,7 @@ groups: 7 llc-access 2 tlb-miss 1K tlb-access - 36 branch-miss + 36 branch 0 remote-access 900 memory diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index a1895a4f530b..dddaf4f3ffed 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -75,7 +75,6 @@ enum itrace_period_type { * (not fully accurate, since CYC packets are only emitted * together with other events, such as branches) * @branches: whether to synthesize 'branches' events - * (branch misses only for Arm SPE) * @transactions: whether to synthesize events for transactions * @ptwrites: whether to synthesize events for ptwrites * @pwr_events: whether to synthesize power events @@ -650,7 +649,7 @@ bool auxtrace__evsel_is_auxtrace(struct perf_session *session, #define ITRACE_HELP \ " i[period]: synthesize instructions events\n" \ " y[period]: synthesize cycles events (same period as i)\n" \ -" b: synthesize branches events (branch misses for Arm SPE)\n" \ +" b: synthesize branches events\n" \ " c: synthesize branches events (calls only)\n" \ " r: synthesize branches events (returns only)\n" \ " x: synthesize transactions events\n" \ -- cgit v1.2.3 From 54afc56db221c831479dd1b59eb0657c078355d1 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 28 Oct 2024 18:31:28 -0300 Subject: perf probe: Fix retrieval of source files from a debuginfod server When perf is linked with libdebuginfod: root@number:~# ldd ~/bin/perf | grep debuginfod libdebuginfod.so.1 => /lib64/libdebuginfod.so.1 (0x00007ff5c3930000) root@number:~# perf check feature debuginfod debuginfod: [ on ] # HAVE_DEBUGINFOD_SUPPORT root@number:~# And we don't have a debuginfo package installed for the binary we're trying to use, vmlinux in this case as we didn't specify any using 'perf probe -x', it will use the build for the running kernel: root@number:~# perf buildid-list -k 38e927fd7799d50dbc4d99ec5e3f781b6105a6a9 root@number:~# And communicate with a debuginfo server, be it configured in a ~/.perfconfig file, excerpt from the 'perf config' man page: buildid-cache.* buildid-cache.debuginfod=URLs Specify debuginfod URLs to be used when retrieving perf.data binaries, it follows the same syntax as the DEBUGINFOD_URLS variable, like: buildid-cache.debuginfod=http://192.168.122.174:8002 Or via the DEBUGINFOD_URLS env var, as distros like fedora do by default: root@number:~# echo $DEBUGINFOD_URLS https://debuginfod.fedoraproject.org/ root@number:~# To pick and cache just what is needed, instead of requiring the manual installation of the entire kernel-debuginfo package, which is really large. It will, in this example, use the following cache files, deleted before/after this patch just to test the whole process: root@number:~# rm -f /root/.cache/debuginfod_client/38e927fd7799d50dbc4d99ec5e3f781b6105a6a9/source-a1414a5d-#usr#src#debug#kernel-6.11.4#linux-6.11.4-201.fc40.x86_64#net#ipv4#icmp.c root@number:~# rm -f /root/.cache/debuginfod_client/38e927fd7799d50dbc4d99ec5e3f781b6105a6a9/debuginfo Before this patch: root@number:~# perf probe -L icmp_rcv Failed to find source file path. Error: Failed to show lines. root@number:~# This is because 'perf probe' was using just the relative file name, in this case "net/ipv4/icmp.c", that is where the 'icmp_rcv' function is located, if we add it and comply with the debuginfo_find_source() function man page, it contacts the server, finds the necessary files, cache them locally and all works: root@number:~# perf probe -L icmp_rcv | head 0 int icmp_rcv(struct sk_buff *skb) { 2 enum skb_drop_reason reason = SKB_DROP_REASON_NOT_SPECIFIED; struct rtable *rt = skb_rtable(skb); struct net *net = dev_net(rt->dst.dev); struct icmphdr *icmph; if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) { 8 struct sec_path *sp = skb_sec_path(skb); root@number:~# Acked-by: Frank Ch. Eigler Cc: Aaron Merey Cc: Francesco Nigro Cc: Masami Hiramatsu Signed-off-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/ZyACsIFUETsr7-09@x1 Signed-off-by: Namhyung Kim --- tools/perf/util/probe-finder.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 18181017f5fd..c2ca94e29aca 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -1874,7 +1874,11 @@ int find_source_path(const char *raw_path, const char *sbuild_id, const char *prefix = symbol_conf.source_prefix; if (sbuild_id && !prefix) { - if (!get_source_from_debuginfod(raw_path, sbuild_id, new_path)) + char prefixed_raw_path[PATH_MAX]; + + path__join(prefixed_raw_path, sizeof(prefixed_raw_path), comp_dir, raw_path); + + if (!get_source_from_debuginfod(prefixed_raw_path, sbuild_id, new_path)) return 0; } -- cgit v1.2.3 From e626a13f6fbb4697f8734333432dca577628d09a Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Tue, 29 Oct 2024 13:39:19 -0700 Subject: selftests/bpf: drop unnecessary bpf_iter.h type duplication Drop bpf_iter.h header which uses vmlinux.h but re-defines a bunch of iterator structures and some of BPF constants for use in BPF iterator selftests. None of that is necessary when fresh vmlinux.h header is generated for vmlinux image that matches latest selftests. So drop ugly hacks and have a nice plain vmlinux.h usage everywhere. We could do the same with all the kfunc __ksym redefinitions, but that has dependency on very fresh pahole, so I'm not addressing that here. Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20241029203919.1948941-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/progs/bpf_iter.h | 174 --------------------- .../selftests/bpf/progs/bpf_iter_bpf_array_map.c | 2 +- .../selftests/bpf/progs/bpf_iter_bpf_hash_map.c | 2 +- .../selftests/bpf/progs/bpf_iter_bpf_link.c | 2 +- .../testing/selftests/bpf/progs/bpf_iter_bpf_map.c | 2 +- .../bpf/progs/bpf_iter_bpf_percpu_array_map.c | 2 +- .../bpf/progs/bpf_iter_bpf_percpu_hash_map.c | 2 +- .../bpf/progs/bpf_iter_bpf_sk_storage_helpers.c | 2 +- .../bpf/progs/bpf_iter_bpf_sk_storage_map.c | 2 +- .../selftests/bpf/progs/bpf_iter_ipv6_route.c | 2 +- tools/testing/selftests/bpf/progs/bpf_iter_ksym.c | 2 +- .../testing/selftests/bpf/progs/bpf_iter_netlink.c | 2 +- .../selftests/bpf/progs/bpf_iter_setsockopt.c | 2 +- .../selftests/bpf/progs/bpf_iter_setsockopt_unix.c | 2 +- .../testing/selftests/bpf/progs/bpf_iter_sockmap.c | 2 +- .../selftests/bpf/progs/bpf_iter_task_btf.c | 2 +- .../selftests/bpf/progs/bpf_iter_task_file.c | 2 +- .../selftests/bpf/progs/bpf_iter_task_stack.c | 2 +- .../selftests/bpf/progs/bpf_iter_task_vmas.c | 2 +- tools/testing/selftests/bpf/progs/bpf_iter_tasks.c | 2 +- tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c | 2 +- tools/testing/selftests/bpf/progs/bpf_iter_tcp6.c | 2 +- .../selftests/bpf/progs/bpf_iter_test_kern3.c | 2 +- .../selftests/bpf/progs/bpf_iter_test_kern4.c | 2 +- .../selftests/bpf/progs/bpf_iter_test_kern5.c | 2 +- .../selftests/bpf/progs/bpf_iter_test_kern6.c | 2 +- .../bpf/progs/bpf_iter_test_kern_common.h | 2 +- tools/testing/selftests/bpf/progs/bpf_iter_udp4.c | 2 +- tools/testing/selftests/bpf/progs/bpf_iter_udp6.c | 2 +- tools/testing/selftests/bpf/progs/bpf_iter_unix.c | 2 +- .../selftests/bpf/progs/bpf_iter_vma_offset.c | 2 +- tools/testing/selftests/bpf/progs/cgroup_iter.c | 3 +- .../selftests/bpf/progs/cgrp_ls_sleepable.c | 3 +- .../testing/selftests/bpf/progs/kmem_cache_iter.c | 3 +- 34 files changed, 33 insertions(+), 210 deletions(-) delete mode 100644 tools/testing/selftests/bpf/progs/bpf_iter.h (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/bpf_iter.h b/tools/testing/selftests/bpf/progs/bpf_iter.h deleted file mode 100644 index 3305dc3a74b3..000000000000 --- a/tools/testing/selftests/bpf/progs/bpf_iter.h +++ /dev/null @@ -1,174 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (c) 2020 Facebook */ -/* "undefine" structs in vmlinux.h, because we "override" them below */ -#define bpf_iter_meta bpf_iter_meta___not_used -#define bpf_iter__bpf_map bpf_iter__bpf_map___not_used -#define bpf_iter__ipv6_route bpf_iter__ipv6_route___not_used -#define bpf_iter__netlink bpf_iter__netlink___not_used -#define bpf_iter__task bpf_iter__task___not_used -#define bpf_iter__task_file bpf_iter__task_file___not_used -#define bpf_iter__task_vma bpf_iter__task_vma___not_used -#define bpf_iter__tcp bpf_iter__tcp___not_used -#define tcp6_sock tcp6_sock___not_used -#define bpf_iter__udp bpf_iter__udp___not_used -#define udp6_sock udp6_sock___not_used -#define bpf_iter__unix bpf_iter__unix___not_used -#define bpf_iter__bpf_map_elem bpf_iter__bpf_map_elem___not_used -#define bpf_iter__bpf_sk_storage_map bpf_iter__bpf_sk_storage_map___not_used -#define bpf_iter__sockmap bpf_iter__sockmap___not_used -#define bpf_iter__bpf_link bpf_iter__bpf_link___not_used -#define bpf_iter__cgroup bpf_iter__cgroup___not_used -#define btf_ptr btf_ptr___not_used -#define BTF_F_COMPACT BTF_F_COMPACT___not_used -#define BTF_F_NONAME BTF_F_NONAME___not_used -#define BTF_F_PTR_RAW BTF_F_PTR_RAW___not_used -#define BTF_F_ZERO BTF_F_ZERO___not_used -#define bpf_iter__ksym bpf_iter__ksym___not_used -#define bpf_iter__kmem_cache bpf_iter__kmem_cache___not_used -#include "vmlinux.h" -#undef bpf_iter_meta -#undef bpf_iter__bpf_map -#undef bpf_iter__ipv6_route -#undef bpf_iter__netlink -#undef bpf_iter__task -#undef bpf_iter__task_file -#undef bpf_iter__task_vma -#undef bpf_iter__tcp -#undef tcp6_sock -#undef bpf_iter__udp -#undef udp6_sock -#undef bpf_iter__unix -#undef bpf_iter__bpf_map_elem -#undef bpf_iter__bpf_sk_storage_map -#undef bpf_iter__sockmap -#undef bpf_iter__bpf_link -#undef bpf_iter__cgroup -#undef btf_ptr -#undef BTF_F_COMPACT -#undef BTF_F_NONAME -#undef BTF_F_PTR_RAW -#undef BTF_F_ZERO -#undef bpf_iter__ksym -#undef bpf_iter__kmem_cache - -struct bpf_iter_meta { - struct seq_file *seq; - __u64 session_id; - __u64 seq_num; -} __attribute__((preserve_access_index)); - -struct bpf_iter__ipv6_route { - struct bpf_iter_meta *meta; - struct fib6_info *rt; -} __attribute__((preserve_access_index)); - -struct bpf_iter__netlink { - struct bpf_iter_meta *meta; - struct netlink_sock *sk; -} __attribute__((preserve_access_index)); - -struct bpf_iter__task { - struct bpf_iter_meta *meta; - struct task_struct *task; -} __attribute__((preserve_access_index)); - -struct bpf_iter__task_file { - struct bpf_iter_meta *meta; - struct task_struct *task; - __u32 fd; - struct file *file; -} __attribute__((preserve_access_index)); - -struct bpf_iter__task_vma { - struct bpf_iter_meta *meta; - struct task_struct *task; - struct vm_area_struct *vma; -} __attribute__((preserve_access_index)); - -struct bpf_iter__bpf_map { - struct bpf_iter_meta *meta; - struct bpf_map *map; -} __attribute__((preserve_access_index)); - -struct bpf_iter__tcp { - struct bpf_iter_meta *meta; - struct sock_common *sk_common; - uid_t uid; -} __attribute__((preserve_access_index)); - -struct tcp6_sock { - struct tcp_sock tcp; - struct ipv6_pinfo inet6; -} __attribute__((preserve_access_index)); - -struct bpf_iter__udp { - struct bpf_iter_meta *meta; - struct udp_sock *udp_sk; - uid_t uid __attribute__((aligned(8))); - int bucket __attribute__((aligned(8))); -} __attribute__((preserve_access_index)); - -struct udp6_sock { - struct udp_sock udp; - struct ipv6_pinfo inet6; -} __attribute__((preserve_access_index)); - -struct bpf_iter__unix { - struct bpf_iter_meta *meta; - struct unix_sock *unix_sk; - uid_t uid; -} __attribute__((preserve_access_index)); - -struct bpf_iter__bpf_map_elem { - struct bpf_iter_meta *meta; - struct bpf_map *map; - void *key; - void *value; -}; - -struct bpf_iter__bpf_sk_storage_map { - struct bpf_iter_meta *meta; - struct bpf_map *map; - struct sock *sk; - void *value; -}; - -struct bpf_iter__sockmap { - struct bpf_iter_meta *meta; - struct bpf_map *map; - void *key; - struct sock *sk; -}; - -struct bpf_iter__bpf_link { - struct bpf_iter_meta *meta; - struct bpf_link *link; -}; - -struct bpf_iter__cgroup { - struct bpf_iter_meta *meta; - struct cgroup *cgroup; -} __attribute__((preserve_access_index)); - -struct btf_ptr { - void *ptr; - __u32 type_id; - __u32 flags; -}; - -enum { - BTF_F_COMPACT = (1ULL << 0), - BTF_F_NONAME = (1ULL << 1), - BTF_F_PTR_RAW = (1ULL << 2), - BTF_F_ZERO = (1ULL << 3), -}; - -struct bpf_iter__ksym { - struct bpf_iter_meta *meta; - struct kallsym_iter *ksym; -}; - -struct bpf_iter__kmem_cache { - struct bpf_iter_meta *meta; - struct kmem_cache *s; -} __attribute__((preserve_access_index)); diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_array_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_array_map.c index 564835ba7d51..19710cc0f250 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_array_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_array_map.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c index d7a69217fb68..f47da665f7e0 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_hash_map.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_link.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_link.c index e1af2f8f75a6..7b69e1887705 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_link.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_link.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2022 Red Hat, Inc. */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c index 6c39e86b666f..c868ffb8080f 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_map.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c index 9f0e0705b2bf..9fdea8cd4c6f 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_hash_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_hash_map.c index 5014a17d6c02..aa529f76c7fc 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_hash_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_hash_map.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c index 6cecab2b32ba..e88dab196e0f 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_helpers.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Google LLC. */ -#include "bpf_iter.h" +#include #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_map.c index c7b8e006b171..eb9642923e1c 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_sk_storage_map.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c b/tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c index 784a610ce039..73a5cf3ba3d3 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_ksym.c b/tools/testing/selftests/bpf/progs/bpf_iter_ksym.c index 521267818f4d..3e725b1fce37 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_ksym.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_ksym.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2022, Oracle and/or its affiliates. */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_netlink.c b/tools/testing/selftests/bpf/progs/bpf_iter_netlink.c index a28e51e2dcee..00b2ceae81fb 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_netlink.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_netlink.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt.c b/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt.c index ec7f91850dec..774d4dbe8189 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2021 Facebook */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt_unix.c b/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt_unix.c index eafc877ea460..d92631ec6161 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt_unix.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt_unix.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright Amazon.com Inc. or its affiliates. */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c b/tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c index f3af0e30cead..317fe49760cc 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Cloudflare */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_task_btf.c b/tools/testing/selftests/bpf/progs/bpf_iter_task_btf.c index bca8b889cb10..ef2f7c8d9373 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_task_btf.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_task_btf.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020, Oracle and/or its affiliates. */ -#include "bpf_iter.h" +#include #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_task_file.c b/tools/testing/selftests/bpf/progs/bpf_iter_task_file.c index b0255080662d..959a8d899eaf 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_task_file.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_task_file.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c b/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c index 442f4ca39fd7..f5a309455490 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c b/tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c index 423b39e60b6f..d64ba7ddaed5 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c b/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c index 6cbb3393f243..bc10c4e4b4fa 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c b/tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c index 92267abb462f..d22449c69363 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_tcp6.c b/tools/testing/selftests/bpf/progs/bpf_iter_tcp6.c index 943f7bba180e..8b072666f9d9 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_tcp6.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_tcp6.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c index 2a4647f20c46..6b17e7e86a48 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c index dbf61c44acac..56177508798f 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern5.c b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern5.c index e3a7575e81d2..9d8b7310d2c2 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern5.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern5.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern6.c b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern6.c index 1c7304f56b1e..b150bd468824 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern6.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern6.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern_common.h b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern_common.h index d5e3df66ad9a..6a4c50497c5e 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern_common.h +++ b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern_common.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_udp4.c b/tools/testing/selftests/bpf/progs/bpf_iter_udp4.c index cf0c485b1ed7..ffbd4b116d17 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_udp4.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_udp4.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_udp6.c b/tools/testing/selftests/bpf/progs/bpf_iter_udp6.c index 5031e21c433f..47ff7754f4fd 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_udp6.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_udp6.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_unix.c b/tools/testing/selftests/bpf/progs/bpf_iter_unix.c index e6aefae38894..fea275df9e22 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_unix.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_unix.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright Amazon.com Inc. or its affiliates. */ -#include "bpf_iter.h" +#include #include "bpf_tracing_net.h" #include #include diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c b/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c index ee7455d2623a..174298e122d3 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ -#include "bpf_iter.h" +#include #include char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/cgroup_iter.c b/tools/testing/selftests/bpf/progs/cgroup_iter.c index de03997322a7..f30841997a8d 100644 --- a/tools/testing/selftests/bpf/progs/cgroup_iter.c +++ b/tools/testing/selftests/bpf/progs/cgroup_iter.c @@ -1,7 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2022 Google */ - -#include "bpf_iter.h" +#include #include #include diff --git a/tools/testing/selftests/bpf/progs/cgrp_ls_sleepable.c b/tools/testing/selftests/bpf/progs/cgrp_ls_sleepable.c index 5e282c16eadc..a2de95f85648 100644 --- a/tools/testing/selftests/bpf/progs/cgrp_ls_sleepable.c +++ b/tools/testing/selftests/bpf/progs/cgrp_ls_sleepable.c @@ -1,7 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ - -#include "bpf_iter.h" +#include #include #include #include "bpf_misc.h" diff --git a/tools/testing/selftests/bpf/progs/kmem_cache_iter.c b/tools/testing/selftests/bpf/progs/kmem_cache_iter.c index 72c9dafecd98..e775d5cd99fc 100644 --- a/tools/testing/selftests/bpf/progs/kmem_cache_iter.c +++ b/tools/testing/selftests/bpf/progs/kmem_cache_iter.c @@ -1,7 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2024 Google */ - -#include "bpf_iter.h" +#include #include #include -- cgit v1.2.3 From aab154a442f9ba2a08fc130dbc8d178a33e10345 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Mon, 21 Oct 2024 13:54:46 +0200 Subject: selftests: add file SLAB_TYPESAFE_BY_RCU recycling stressor Add a simple file stressor that lives directly in-tree. This will create a bunch of processes that each open 500 file descriptors and then use close_range() to close them all. Concurrently, other processes read /proc//fd/ which rougly does f = fget_task_next(p, &fd); if (!f) break; data.mode = f->f_mode; fput(f); Which means that it'll try to get a reference to a file in another task's file descriptor table. Under heavy file load it is increasingly likely that the other task will manage to close @file and @file will be recycled due to SLAB_TYPEAFE_BY_RCU concurrently. This will trigger various warnings in the file reference counting code. Link: https://lore.kernel.org/r/20241021-vergab-streuen-924df15dceb9@brauner Signed-off-by: Christian Brauner --- tools/testing/selftests/filesystems/.gitignore | 1 + tools/testing/selftests/filesystems/Makefile | 2 +- .../testing/selftests/filesystems/file_stressor.c | 194 +++++++++++++++++++++ 3 files changed, 196 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/filesystems/file_stressor.c (limited to 'tools') diff --git a/tools/testing/selftests/filesystems/.gitignore b/tools/testing/selftests/filesystems/.gitignore index f0c0ff20d6cf..828b66a10c63 100644 --- a/tools/testing/selftests/filesystems/.gitignore +++ b/tools/testing/selftests/filesystems/.gitignore @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only dnotify_test devpts_pts +file_stressor diff --git a/tools/testing/selftests/filesystems/Makefile b/tools/testing/selftests/filesystems/Makefile index c647fd6a0446..66305fc34c60 100644 --- a/tools/testing/selftests/filesystems/Makefile +++ b/tools/testing/selftests/filesystems/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 CFLAGS += $(KHDR_INCLUDES) -TEST_GEN_PROGS := devpts_pts +TEST_GEN_PROGS := devpts_pts file_stressor TEST_GEN_PROGS_EXTENDED := dnotify_test include ../lib.mk diff --git a/tools/testing/selftests/filesystems/file_stressor.c b/tools/testing/selftests/filesystems/file_stressor.c new file mode 100644 index 000000000000..1136f93a9977 --- /dev/null +++ b/tools/testing/selftests/filesystems/file_stressor.c @@ -0,0 +1,194 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#define __SANE_USERSPACE_TYPES__ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../kselftest_harness.h" + +#include +#include +#include + +static inline int sys_fsopen(const char *fsname, unsigned int flags) +{ + return syscall(__NR_fsopen, fsname, flags); +} + +static inline int sys_fsconfig(int fd, unsigned int cmd, const char *key, + const char *value, int aux) +{ + return syscall(__NR_fsconfig, fd, cmd, key, value, aux); +} + +static inline int sys_fsmount(int fd, unsigned int flags, + unsigned int attr_flags) +{ + return syscall(__NR_fsmount, fd, flags, attr_flags); +} + +#ifndef MOVE_MOUNT_F_EMPTY_PATH +#define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */ +#endif + +static inline int sys_move_mount(int from_dfd, const char *from_pathname, + int to_dfd, const char *to_pathname, + unsigned int flags) +{ + return syscall(__NR_move_mount, from_dfd, from_pathname, to_dfd, + to_pathname, flags); +} + +FIXTURE(file_stressor) { + int fd_tmpfs; + int nr_procs; + int max_fds; + pid_t *pids_openers; + pid_t *pids_getdents; + int *fd_proc_pid; +}; + +FIXTURE_SETUP(file_stressor) +{ + int fd_context; + + ASSERT_EQ(unshare(CLONE_NEWNS), 0); + ASSERT_EQ(mount(NULL, "/", NULL, MS_SLAVE | MS_REC, NULL), 0); + ASSERT_EQ(mkdir("/slab_typesafe_by_rcu", 0755), 0); + + fd_context = sys_fsopen("tmpfs", 0); + ASSERT_GE(fd_context, 0); + + ASSERT_EQ(sys_fsconfig(fd_context, FSCONFIG_CMD_CREATE, NULL, NULL, 0), 0); + self->fd_tmpfs = sys_fsmount(fd_context, 0, 0); + ASSERT_GE(self->fd_tmpfs, 0); + ASSERT_EQ(close(fd_context), 0); + + ASSERT_EQ(sys_move_mount(self->fd_tmpfs, "", -EBADF, "/slab_typesafe_by_rcu", MOVE_MOUNT_F_EMPTY_PATH), 0); + + self->nr_procs = sysconf(_SC_NPROCESSORS_ONLN); + self->pids_openers = malloc(sizeof(pid_t) * self->nr_procs); + ASSERT_NE(self->pids_openers, NULL); + self->pids_getdents = malloc(sizeof(pid_t) * self->nr_procs); + ASSERT_NE(self->pids_getdents, NULL); + self->fd_proc_pid = malloc(sizeof(int) * self->nr_procs); + ASSERT_NE(self->fd_proc_pid, NULL); + self->max_fds = 500; +} + +FIXTURE_TEARDOWN(file_stressor) +{ + for (int i = 0; i < self->nr_procs; i++) { + int wstatus; + pid_t pid; + + pid = waitpid(self->pids_openers[i], &wstatus, 0); + ASSERT_EQ(pid, self->pids_openers[i]); + ASSERT_TRUE(!WIFEXITED(wstatus) || !WIFSIGNALED(wstatus)); + + pid = waitpid(self->pids_getdents[i], &wstatus, 0); + ASSERT_EQ(pid, self->pids_getdents[i]); + ASSERT_TRUE(!WIFEXITED(wstatus) || !WIFSIGNALED(wstatus)); + } + free(self->pids_openers); + free(self->pids_getdents); + ASSERT_EQ(close(self->fd_tmpfs), 0); + + umount2("/slab_typesafe_by_rcu", 0); + ASSERT_EQ(rmdir("/slab_typesafe_by_rcu"), 0); +} + +TEST_F_TIMEOUT(file_stressor, slab_typesafe_by_rcu, 900 * 2) +{ + for (int i = 0; i < self->nr_procs; i++) { + pid_t pid_self; + + self->pids_openers[i] = fork(); + ASSERT_GE(self->pids_openers[i], 0); + + if (self->pids_openers[i] != 0) + continue; + + self->pids_openers[i] = getpid(); + for (;;) { + for (int i = 0; i < self->max_fds; i++) { + char path[PATH_MAX]; + int fd; + + sprintf(path, "/slab_typesafe_by_rcu/file-%d-%d", self->pids_openers[i], i); + fd = open(path, O_CREAT | O_RDONLY | O_CLOEXEC, 0644); + if (fd < 0) + continue; + } + + close_range(3, ~0U, 0); + } + + exit(0); + } + + for (int i = 0; i < self->nr_procs; i++) { + char path[PATH_MAX]; + + sprintf(path, "/proc/%d/fd/", self->pids_openers[i]); + self->fd_proc_pid[i] = open(path, O_DIRECTORY | O_RDONLY | O_CLOEXEC); + ASSERT_GE(self->fd_proc_pid[i], 0); + } + + for (int i = 0; i < self->nr_procs; i++) { + self->pids_getdents[i] = fork(); + ASSERT_GE(self->pids_getdents[i], 0); + + if (self->pids_getdents[i] != 0) + continue; + + self->pids_getdents[i] = getpid(); + for (;;) { + char ents[1024]; + ssize_t nr_read; + + /* + * Concurrently read /proc//fd/ which rougly does: + * + * f = fget_task_next(p, &fd); + * if (!f) + * break; + * data.mode = f->f_mode; + * fput(f); + * + * Which means that it'll try to get a reference to a + * file in another task's file descriptor table. + * + * Under heavy file load it is increasingly likely that + * the other task will manage to close @file and @file + * is being recycled due to SLAB_TYPEAFE_BY_RCU + * concurrently. This will trigger various warnings in + * the file reference counting code. + */ + do { + nr_read = syscall(SYS_getdents64, self->fd_proc_pid[i], ents, sizeof(ents)); + } while (nr_read >= 0); + + lseek(self->fd_proc_pid[i], 0, SEEK_SET); + } + + exit(0); + } + + ASSERT_EQ(clock_nanosleep(CLOCK_MONOTONIC, 0, &(struct timespec){ .tv_sec = 900 /* 15 min */ }, NULL), 0); + + for (int i = 0; i < self->nr_procs; i++) { + kill(self->pids_openers[i], SIGKILL); + kill(self->pids_getdents[i], SIGKILL); + } +} + +TEST_HARNESS_MAIN -- cgit v1.2.3 From b87f584024e1df289027cb7671de6af0d97b5de9 Mon Sep 17 00:00:00 2001 From: Puranjay Mohan Date: Sat, 26 Oct 2024 12:53:38 +0000 Subject: selftests/bpf: Don't mask result of bpf_csum_diff() in test_verifier MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The bpf_csum_diff() helper has been fixed to return a 16-bit value for all archs, so now we don't need to mask the result. This commit is basically reverting the below: commit 6185266c5a85 ("selftests/bpf: Mask bpf_csum_diff() return value to 16 bits in test_verifier") Signed-off-by: Puranjay Mohan Signed-off-by: Daniel Borkmann Reviewed-by: Toke Høiland-Jørgensen Acked-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20241026125339.26459-4-puranjay@kernel.org --- tools/testing/selftests/bpf/progs/verifier_array_access.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/verifier_array_access.c b/tools/testing/selftests/bpf/progs/verifier_array_access.c index 95d7ecc12963..4195aa824ba5 100644 --- a/tools/testing/selftests/bpf/progs/verifier_array_access.c +++ b/tools/testing/selftests/bpf/progs/verifier_array_access.c @@ -368,8 +368,7 @@ __naked void a_read_only_array_2_1(void) r4 = 0; \ r5 = 0; \ call %[bpf_csum_diff]; \ -l0_%=: r0 &= 0xffff; \ - exit; \ +l0_%=: exit; \ " : : __imm(bpf_csum_diff), __imm(bpf_map_lookup_elem), -- cgit v1.2.3 From 00c1f3dc66a38cf65c3cfd0cb4fe7acfc7f60e37 Mon Sep 17 00:00:00 2001 From: Puranjay Mohan Date: Sat, 26 Oct 2024 12:53:39 +0000 Subject: selftests/bpf: Add a selftest for bpf_csum_diff() Add a selftest for the bpf_csum_diff() helper. This selftests runs the helper in all three configurations(push, pull, and diff) and verifies its output. The correct results have been computed by hand and by the helper's older implementation. Signed-off-by: Puranjay Mohan Signed-off-by: Daniel Borkmann Acked-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20241026125339.26459-5-puranjay@kernel.org --- .../selftests/bpf/prog_tests/test_csum_diff.c | 408 +++++++++++++++++++++ tools/testing/selftests/bpf/progs/csum_diff_test.c | 42 +++ 2 files changed, 450 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/test_csum_diff.c create mode 100644 tools/testing/selftests/bpf/progs/csum_diff_test.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/test_csum_diff.c b/tools/testing/selftests/bpf/prog_tests/test_csum_diff.c new file mode 100644 index 000000000000..107b20d43e83 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/test_csum_diff.c @@ -0,0 +1,408 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright Amazon.com Inc. or its affiliates */ +#include +#include "csum_diff_test.skel.h" + +#define BUFF_SZ 512 + +struct testcase { + unsigned long long to_buff[BUFF_SZ / 8]; + unsigned int to_buff_len; + unsigned long long from_buff[BUFF_SZ / 8]; + unsigned int from_buff_len; + unsigned short seed; + unsigned short result; +}; + +#define NUM_PUSH_TESTS 4 + +struct testcase push_tests[NUM_PUSH_TESTS] = { + { + .to_buff = { + 0xdeadbeefdeadbeef, + }, + .to_buff_len = 8, + .from_buff = {}, + .from_buff_len = 0, + .seed = 0, + .result = 0x3b3b + }, + { + .to_buff = { + 0xdeadbeefdeadbeef, + 0xbeefdeadbeefdead, + }, + .to_buff_len = 16, + .from_buff = {}, + .from_buff_len = 0, + .seed = 0x1234, + .result = 0x88aa + }, + { + .to_buff = { + 0xdeadbeefdeadbeef, + 0xbeefdeadbeefdead, + }, + .to_buff_len = 15, + .from_buff = {}, + .from_buff_len = 0, + .seed = 0x1234, +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + .result = 0xcaa9 +#else + .result = 0x87fd +#endif + }, + { + .to_buff = { + 0x327b23c66b8b4567, + 0x66334873643c9869, + 0x19495cff74b0dc51, + 0x625558ec2ae8944a, + 0x46e87ccd238e1f29, + 0x507ed7ab3d1b58ba, + 0x41b71efb2eb141f2, + 0x7545e14679e2a9e3, + 0x5bd062c2515f007c, + 0x4db127f812200854, + 0x1f16e9e80216231b, + 0x66ef438d1190cde7, + 0x3352255a140e0f76, + 0x0ded7263109cf92e, + 0x1befd79f7fdcc233, + 0x6b68079a41a7c4c9, + 0x25e45d324e6afb66, + 0x431bd7b7519b500d, + 0x7c83e4583f2dba31, + 0x62bbd95a257130a3, + 0x628c895d436c6125, + 0x721da317333ab105, + 0x2d1d5ae92443a858, + 0x75a2a8d46763845e, + 0x79838cb208edbdab, + 0x0b03e0c64353d0cd, + 0x54e49eb4189a769b, + 0x2ca8861171f32454, + 0x02901d820836c40e, + 0x081386413a95f874, + 0x7c3dbd3d1e7ff521, + 0x6ceaf087737b8ddc, + 0x4516dde922221a70, + 0x614fd4a13006c83e, + 0x5577f8e1419ac241, + 0x05072367440badfc, + 0x77465f013804823e, + 0x5c482a977724c67e, + 0x5e884adc2463b9ea, + 0x2d51779651ead36b, + 0x153ea438580bd78f, + 0x70a64e2a3855585c, + 0x2a487cb06a2342ec, + 0x725a06fb1d4ed43b, + 0x57e4ccaf2cd89a32, + 0x4b588f547a6d8d3c, + 0x6de91b18542289ec, + 0x7644a45c38437fdb, + 0x684a481a32fff902, + 0x749abb43579478fe, + 0x1ba026fa3dc240fb, + 0x75c6c33a79a1deaa, + 0x70c6a52912e685fb, + 0x374a3fe6520eedd1, + 0x23f9c13c4f4ef005, + 0x275ac794649bb77c, + 0x1cf10fd839386575, + 0x235ba861180115be, + 0x354fe9f947398c89, + 0x741226bb15b5af5c, + 0x10233c990d34b6a8, + 0x615740953f6ab60f, + 0x77ae35eb7e0c57b1, + 0x310c50b3579be4f1, + }, + .to_buff_len = 512, + .from_buff = {}, + .from_buff_len = 0, + .seed = 0xffff, + .result = 0xca45 + }, +}; + +#define NUM_PULL_TESTS 4 + +struct testcase pull_tests[NUM_PULL_TESTS] = { + { + .from_buff = { + 0xdeadbeefdeadbeef, + }, + .from_buff_len = 8, + .to_buff = {}, + .to_buff_len = 0, + .seed = 0, + .result = 0xc4c4 + }, + { + .from_buff = { + 0xdeadbeefdeadbeef, + 0xbeefdeadbeefdead, + }, + .from_buff_len = 16, + .to_buff = {}, + .to_buff_len = 0, + .seed = 0x1234, + .result = 0x9bbd + }, + { + .from_buff = { + 0xdeadbeefdeadbeef, + 0xbeefdeadbeefdead, + }, + .from_buff_len = 15, + .to_buff = {}, + .to_buff_len = 0, + .seed = 0x1234, +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + .result = 0x59be +#else + .result = 0x9c6a +#endif + }, + { + .from_buff = { + 0x327b23c66b8b4567, + 0x66334873643c9869, + 0x19495cff74b0dc51, + 0x625558ec2ae8944a, + 0x46e87ccd238e1f29, + 0x507ed7ab3d1b58ba, + 0x41b71efb2eb141f2, + 0x7545e14679e2a9e3, + 0x5bd062c2515f007c, + 0x4db127f812200854, + 0x1f16e9e80216231b, + 0x66ef438d1190cde7, + 0x3352255a140e0f76, + 0x0ded7263109cf92e, + 0x1befd79f7fdcc233, + 0x6b68079a41a7c4c9, + 0x25e45d324e6afb66, + 0x431bd7b7519b500d, + 0x7c83e4583f2dba31, + 0x62bbd95a257130a3, + 0x628c895d436c6125, + 0x721da317333ab105, + 0x2d1d5ae92443a858, + 0x75a2a8d46763845e, + 0x79838cb208edbdab, + 0x0b03e0c64353d0cd, + 0x54e49eb4189a769b, + 0x2ca8861171f32454, + 0x02901d820836c40e, + 0x081386413a95f874, + 0x7c3dbd3d1e7ff521, + 0x6ceaf087737b8ddc, + 0x4516dde922221a70, + 0x614fd4a13006c83e, + 0x5577f8e1419ac241, + 0x05072367440badfc, + 0x77465f013804823e, + 0x5c482a977724c67e, + 0x5e884adc2463b9ea, + 0x2d51779651ead36b, + 0x153ea438580bd78f, + 0x70a64e2a3855585c, + 0x2a487cb06a2342ec, + 0x725a06fb1d4ed43b, + 0x57e4ccaf2cd89a32, + 0x4b588f547a6d8d3c, + 0x6de91b18542289ec, + 0x7644a45c38437fdb, + 0x684a481a32fff902, + 0x749abb43579478fe, + 0x1ba026fa3dc240fb, + 0x75c6c33a79a1deaa, + 0x70c6a52912e685fb, + 0x374a3fe6520eedd1, + 0x23f9c13c4f4ef005, + 0x275ac794649bb77c, + 0x1cf10fd839386575, + 0x235ba861180115be, + 0x354fe9f947398c89, + 0x741226bb15b5af5c, + 0x10233c990d34b6a8, + 0x615740953f6ab60f, + 0x77ae35eb7e0c57b1, + 0x310c50b3579be4f1, + }, + .from_buff_len = 512, + .to_buff = {}, + .to_buff_len = 0, + .seed = 0xffff, + .result = 0x35ba + }, +}; + +#define NUM_DIFF_TESTS 4 + +struct testcase diff_tests[NUM_DIFF_TESTS] = { + { + .from_buff = { + 0xdeadbeefdeadbeef, + }, + .from_buff_len = 8, + .to_buff = { + 0xabababababababab, + }, + .to_buff_len = 8, + .seed = 0, + .result = 0x7373 + }, + { + .from_buff = { + 0xdeadbeefdeadbeef, + }, + .from_buff_len = 7, + .to_buff = { + 0xabababababababab, + }, + .to_buff_len = 7, + .seed = 0, +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + .result = 0xa673 +#else + .result = 0x73b7 +#endif + }, + { + .from_buff = { + 0, + }, + .from_buff_len = 8, + .to_buff = { + 0xabababababababab, + }, + .to_buff_len = 8, + .seed = 0, + .result = 0xaeae + }, + { + .from_buff = { + 0xdeadbeefdeadbeef + }, + .from_buff_len = 8, + .to_buff = { + 0, + }, + .to_buff_len = 8, + .seed = 0xffff, + .result = 0xc4c4 + }, +}; + +#define NUM_EDGE_TESTS 4 + +struct testcase edge_tests[NUM_EDGE_TESTS] = { + { + .from_buff = {}, + .from_buff_len = 0, + .to_buff = {}, + .to_buff_len = 0, + .seed = 0, + .result = 0 + }, + { + .from_buff = { + 0x1234 + }, + .from_buff_len = 0, + .to_buff = { + 0x1234 + }, + .to_buff_len = 0, + .seed = 0, + .result = 0 + }, + { + .from_buff = {}, + .from_buff_len = 0, + .to_buff = {}, + .to_buff_len = 0, + .seed = 0x1234, + .result = 0x1234 + }, + { + .from_buff = {}, + .from_buff_len = 512, + .to_buff = {}, + .to_buff_len = 0, + .seed = 0xffff, + .result = 0xffff + }, +}; + +static unsigned short trigger_csum_diff(const struct csum_diff_test *skel) +{ + u8 tmp_out[64 << 2] = {}; + u8 tmp_in[64] = {}; + int err; + int pfd; + + LIBBPF_OPTS(bpf_test_run_opts, topts, + .data_in = tmp_in, + .data_size_in = sizeof(tmp_in), + .data_out = tmp_out, + .data_size_out = sizeof(tmp_out), + .repeat = 1, + ); + pfd = bpf_program__fd(skel->progs.compute_checksum); + err = bpf_prog_test_run_opts(pfd, &topts); + if (err) + return -1; + + return skel->bss->result; +} + +static void test_csum_diff(struct testcase *tests, int num_tests) +{ + struct csum_diff_test *skel; + unsigned short got; + int err; + + for (int i = 0; i < num_tests; i++) { + skel = csum_diff_test__open(); + if (!ASSERT_OK_PTR(skel, "csum_diff_test open")) + return; + + skel->rodata->to_buff_len = tests[i].to_buff_len; + skel->rodata->from_buff_len = tests[i].from_buff_len; + + err = csum_diff_test__load(skel); + if (!ASSERT_EQ(err, 0, "csum_diff_test load")) + goto out; + + memcpy(skel->bss->to_buff, tests[i].to_buff, tests[i].to_buff_len); + memcpy(skel->bss->from_buff, tests[i].from_buff, tests[i].from_buff_len); + skel->bss->seed = tests[i].seed; + + got = trigger_csum_diff(skel); + ASSERT_EQ(got, tests[i].result, "csum_diff result"); + + csum_diff_test__destroy(skel); + } + + return; +out: + csum_diff_test__destroy(skel); +} + +void test_test_csum_diff(void) +{ + if (test__start_subtest("csum_diff_push")) + test_csum_diff(push_tests, NUM_PUSH_TESTS); + if (test__start_subtest("csum_diff_pull")) + test_csum_diff(pull_tests, NUM_PULL_TESTS); + if (test__start_subtest("csum_diff_diff")) + test_csum_diff(diff_tests, NUM_DIFF_TESTS); + if (test__start_subtest("csum_diff_edge")) + test_csum_diff(edge_tests, NUM_EDGE_TESTS); +} diff --git a/tools/testing/selftests/bpf/progs/csum_diff_test.c b/tools/testing/selftests/bpf/progs/csum_diff_test.c new file mode 100644 index 000000000000..9438f1773a58 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/csum_diff_test.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright Amazon.com Inc. or its affiliates */ +#include +#include +#include +#include + +#define BUFF_SZ 512 + +/* Will be updated by benchmark before program loading */ +char to_buff[BUFF_SZ]; +const volatile unsigned int to_buff_len = 0; +char from_buff[BUFF_SZ]; +const volatile unsigned int from_buff_len = 0; +unsigned short seed = 0; + +short result; + +char _license[] SEC("license") = "GPL"; + +SEC("tc") +int compute_checksum(void *ctx) +{ + int to_len_half = to_buff_len / 2; + int from_len_half = from_buff_len / 2; + short result2; + + /* Calculate checksum in one go */ + result2 = bpf_csum_diff((void *)from_buff, from_buff_len, + (void *)to_buff, to_buff_len, seed); + + /* Calculate checksum by concatenating bpf_csum_diff()*/ + result = bpf_csum_diff((void *)from_buff, from_buff_len - from_len_half, + (void *)to_buff, to_buff_len - to_len_half, seed); + + result = bpf_csum_diff((void *)from_buff + (from_buff_len - from_len_half), from_len_half, + (void *)to_buff + (to_buff_len - to_len_half), to_len_half, result); + + result = (result == result2) ? result : 0; + + return 0; +} -- cgit v1.2.3 From 600aa88014e9fca778449316a85ffbb81ef03b89 Mon Sep 17 00:00:00 2001 From: Ba Jing Date: Tue, 3 Sep 2024 12:31:35 +0800 Subject: KVM: selftests: Remove unused macro in the hardware disable test The macro GUEST_CODE_PIO_PORT is never referenced in the code, just remove it. Signed-off-by: Ba Jing Link: https://lore.kernel.org/r/20240903043135.11087-1-bajing@cmss.chinamobile.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/hardware_disable_test.c | 1 - 1 file changed, 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/hardware_disable_test.c b/tools/testing/selftests/kvm/hardware_disable_test.c index bce73bcb973c..94bd6ed24cf3 100644 --- a/tools/testing/selftests/kvm/hardware_disable_test.c +++ b/tools/testing/selftests/kvm/hardware_disable_test.c @@ -20,7 +20,6 @@ #define SLEEPING_THREAD_NUM (1 << 4) #define FORK_NUM (1ULL << 9) #define DELAY_US_MAX 2000 -#define GUEST_CODE_PIO_PORT 4 sem_t *sem; -- cgit v1.2.3 From f8912210eb21b6288634fca4ee60bcc5f7c58756 Mon Sep 17 00:00:00 2001 From: Jiapeng Chong Date: Fri, 13 Sep 2024 13:43:15 +0800 Subject: KVM: selftests: Use ARRAY_SIZE for array length Use of macro ARRAY_SIZE to calculate array size minimizes the redundant code and improves code reusability. ./tools/testing/selftests/kvm/x86_64/debug_regs.c:169:32-33: WARNING: Use ARRAY_SIZE. Reported-by: Abaci Robot Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=10847 Signed-off-by: Jiapeng Chong Link: https://lore.kernel.org/r/20240913054315.130832-1-jiapeng.chong@linux.alibaba.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/debug_regs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/debug_regs.c b/tools/testing/selftests/kvm/x86_64/debug_regs.c index 76cc2df9238a..2d814c1d1dc4 100644 --- a/tools/testing/selftests/kvm/x86_64/debug_regs.c +++ b/tools/testing/selftests/kvm/x86_64/debug_regs.c @@ -166,7 +166,7 @@ int main(void) /* Test single step */ target_rip = CAST_TO_RIP(ss_start); target_dr6 = 0xffff4ff0ULL; - for (i = 0; i < (sizeof(ss_size) / sizeof(ss_size[0])); i++) { + for (i = 0; i < ARRAY_SIZE(ss_size); i++) { target_rip += ss_size[i]; memset(&debug, 0, sizeof(debug)); debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP | -- cgit v1.2.3 From 365836e010a131cce62e3e0bab0348d08ca08490 Mon Sep 17 00:00:00 2001 From: Yunshui Jiang Date: Mon, 28 Oct 2024 16:27:56 +0800 Subject: tests: hsr: Increase timeout to 50 seconds The HSR test, hsr_ping.sh, actually needs 7 min to run. Around 375s to be exact, and even more on a debug kernel or kernel with other network security limits. The timeout setting for the kselftest is currently 45 seconds, which is way too short to integrate hsr tests to run_kselftest infrastructure. However, timeout of hundreds of seconds is quite a long time, especially in a CI/CD environment. It seems that we need accelerate the test and balance with timeout setting. The most time-consuming func is do_ping_long, where ping command sends 10 packages to the given address. The default interval between two ping packages is 1s according to the ping Mannual. There isn't any operation between pings thus we could pass -i 0.1 to ping to make it 10 times faster. While even with this short interval, the test still need about 46.4 seconds to finish because of the two HSR interfaces, each of which is tested by calling do_ping func 12 times and do_ping_long func 19 times and sleep for 3s. So, an explicit setting is also needed to slightly increase the timeout. And to leave us some slack, use 50 as default timeout. Signed-off-by: Yunshui Jiang Link: https://patch.msgid.link/20241028082757.2945232-1-jiangyunshui@kylinos.cn Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/hsr/hsr_common.sh | 4 ++-- tools/testing/selftests/net/hsr/settings | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/net/hsr/settings (limited to 'tools') diff --git a/tools/testing/selftests/net/hsr/hsr_common.sh b/tools/testing/selftests/net/hsr/hsr_common.sh index 8e97b1f2e7e5..1dc882ac1c74 100644 --- a/tools/testing/selftests/net/hsr/hsr_common.sh +++ b/tools/testing/selftests/net/hsr/hsr_common.sh @@ -15,7 +15,7 @@ do_ping() { local netns="$1" local connect_addr="$2" - local ping_args="-q -c 2" + local ping_args="-q -c 2 -i 0.1" if is_v6 "${connect_addr}"; then $ipv6 || return 0 @@ -36,7 +36,7 @@ do_ping_long() { local netns="$1" local connect_addr="$2" - local ping_args="-q -c 10" + local ping_args="-q -c 10 -i 0.1" if is_v6 "${connect_addr}"; then $ipv6 || return 0 diff --git a/tools/testing/selftests/net/hsr/settings b/tools/testing/selftests/net/hsr/settings new file mode 100644 index 000000000000..0fbc037f2aa8 --- /dev/null +++ b/tools/testing/selftests/net/hsr/settings @@ -0,0 +1 @@ +timeout=50 -- cgit v1.2.3 From 8c0d1202bad3aa6e40fb078dc08158f0bb4e03e2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= Date: Thu, 24 Oct 2024 12:03:51 -0700 Subject: perf, riscv: Wire up perf trace support for RISC-V MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RISC-V does not currently support perf trace, since the system call table is not generated. Perform the copy/paste exercise, wiring up RISC-V system call table generation. Signed-off-by: Björn Töpel Tested-by: Alexandre Ghiti Cc: Anup Patel Cc: Palmer Dabbelt Cc: Albert Ou Cc: linux-riscv@lists.infradead.org Cc: Atish Patra Cc: Paul Walmsley Link: https://lore.kernel.org/r/20241024190353.46737-1-bjorn@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/Makefile.config | 6 ++- tools/perf/arch/riscv/Makefile | 22 +++++++++++ tools/perf/arch/riscv/entry/syscalls/mksyscalltbl | 47 +++++++++++++++++++++++ tools/perf/util/syscalltbl.c | 4 ++ 4 files changed, 78 insertions(+), 1 deletion(-) create mode 100755 tools/perf/arch/riscv/entry/syscalls/mksyscalltbl (limited to 'tools') diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index b93ed2b7623f..854f84e80256 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -31,7 +31,7 @@ $(call detected_var,SRCARCH) ifneq ($(NO_SYSCALL_TABLE),1) NO_SYSCALL_TABLE := 1 - ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 powerpc arm64 s390 mips loongarch)) + ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 powerpc arm64 s390 mips loongarch riscv)) NO_SYSCALL_TABLE := 0 endif @@ -83,6 +83,10 @@ ifeq ($(ARCH),mips) LIBUNWIND_LIBS = -lunwind -lunwind-mips endif +ifeq ($(ARCH),riscv) + CFLAGS += -I$(OUTPUT)arch/riscv/include/generated +endif + # So far there's only x86 and arm libdw unwind support merged in perf. # Disable it on all other architectures in case libdw unwind # support is detected in system. Add supported architectures diff --git a/tools/perf/arch/riscv/Makefile b/tools/perf/arch/riscv/Makefile index 4664a78a1afd..00573af87a68 100644 --- a/tools/perf/arch/riscv/Makefile +++ b/tools/perf/arch/riscv/Makefile @@ -4,3 +4,25 @@ endif PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1 PERF_HAVE_JITDUMP := 1 HAVE_KVM_STAT_SUPPORT := 1 + +# +# Syscall table generation for perf +# + +out := $(OUTPUT)arch/riscv/include/generated/asm +header := $(out)/syscalls.c +incpath := $(srctree)/tools +sysdef := $(srctree)/tools/arch/riscv/include/uapi/asm/unistd.h +sysprf := $(srctree)/tools/perf/arch/riscv/entry/syscalls/ +systbl := $(sysprf)/mksyscalltbl + +# Create output directory if not already present +$(shell [ -d '$(out)' ] || mkdir -p '$(out)') + +$(header): $(sysdef) $(systbl) + $(Q)$(SHELL) '$(systbl)' '$(CC)' '$(HOSTCC)' $(incpath) $(sysdef) > $@ + +clean:: + $(call QUIET_CLEAN, riscv) $(RM) $(header) + +archheaders: $(header) diff --git a/tools/perf/arch/riscv/entry/syscalls/mksyscalltbl b/tools/perf/arch/riscv/entry/syscalls/mksyscalltbl new file mode 100755 index 000000000000..c59f5e852b97 --- /dev/null +++ b/tools/perf/arch/riscv/entry/syscalls/mksyscalltbl @@ -0,0 +1,47 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Generate system call table for perf. Derived from +# powerpc script. +# +# Copyright IBM Corp. 2017 +# Author(s): Hendrik Brueckner +# Changed by: Ravi Bangoria +# Changed by: Kim Phillips +# Changed by: Björn Töpel + +gcc=$1 +hostcc=$2 +incpath=$3 +input=$4 + +if ! test -r $input; then + echo "Could not read input file" >&2 + exit 1 +fi + +create_sc_table() +{ + local sc nr max_nr + + while read sc nr; do + printf "%s\n" " [$nr] = \"$sc\"," + max_nr=$nr + done + + echo "#define SYSCALLTBL_RISCV_MAX_ID $max_nr" +} + +create_table() +{ + echo "#include \"$input\"" + echo "static const char *const syscalltbl_riscv[] = {" + create_sc_table + echo "};" +} + +$gcc -E -dM -x c -I $incpath/include/uapi $input \ + |awk '$2 ~ "__NR" && $3 !~ "__NR3264_" { + sub("^#define __NR(3264)?_", ""); + print | "sort -k2 -n"}' \ + |create_table diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c index 7c15dec6900d..349986f6e5f5 100644 --- a/tools/perf/util/syscalltbl.c +++ b/tools/perf/util/syscalltbl.c @@ -46,6 +46,10 @@ static const char *const *syscalltbl_native = syscalltbl_mips_n64; #include const int syscalltbl_native_max_id = SYSCALLTBL_LOONGARCH_MAX_ID; static const char *const *syscalltbl_native = syscalltbl_loongarch; +#elif defined(__riscv) +#include +const int syscalltbl_native_max_id = SYSCALLTBL_RISCV_MAX_ID; +static const char *const *syscalltbl_native = syscalltbl_riscv; #endif struct syscall { -- cgit v1.2.3 From 064d569e20e82c065b1dec9d20c29c7087bb1a00 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 29 Oct 2024 16:29:02 -0300 Subject: perf ftrace latency: Fix unit on histogram first entry when using --use-nsec The use_nsec arg wasn't being taken into account when printing the first histogram entry, fix it: root@number:~# perf ftrace latency --use-nsec -T switch_mm_irqs_off -a sleep 2 # DURATION | COUNT | GRAPH | 0 - 1 us | 0 | | 1 - 2 ns | 0 | | 2 - 4 ns | 0 | | 4 - 8 ns | 0 | | 8 - 16 ns | 0 | | 16 - 32 ns | 0 | | 32 - 64 ns | 125 | | 64 - 128 ns | 335 | | 128 - 256 ns | 2155 | #### | 256 - 512 ns | 9996 | ################### | 512 - 1024 ns | 4958 | ######### | 1 - 2 us | 4636 | ######### | 2 - 4 us | 1053 | ## | 4 - 8 us | 15 | | 8 - 16 us | 1 | | 16 - 32 us | 0 | | 32 - 64 us | 0 | | 64 - 128 us | 0 | | 128 - 256 us | 0 | | 256 - 512 us | 0 | | 512 - 1024 us | 0 | | 1 - ... ms | 0 | | root@number:~# After: root@number:~# perf ftrace latency --use-nsec -T switch_mm_irqs_off -a sleep 2 # DURATION | COUNT | GRAPH | 0 - 1 ns | 0 | | 1 - 2 ns | 0 | | 2 - 4 ns | 0 | | 4 - 8 ns | 0 | | 8 - 16 ns | 0 | | 16 - 32 ns | 0 | | 32 - 64 ns | 19 | | 64 - 128 ns | 94 | | 128 - 256 ns | 2191 | #### | 256 - 512 ns | 9719 | #################### | 512 - 1024 ns | 5330 | ########### | 1 - 2 us | 4104 | ######## | 2 - 4 us | 807 | # | 4 - 8 us | 9 | | 8 - 16 us | 0 | | 16 - 32 us | 0 | | 32 - 64 us | 0 | | 64 - 128 us | 0 | | 128 - 256 us | 0 | | 256 - 512 us | 0 | | 512 - 1024 us | 0 | | 1 - ... ms | 0 | | root@number:~# Fixes: 84005bb6148618cc ("perf ftrace latency: Add -n/--use-nsec option") Signed-off-by: Arnaldo Carvalho de Melo Cc: Gabriele Monaco Link: https://lore.kernel.org/r/ZyE3frB-hMXHCnMO@x1 Signed-off-by: Namhyung Kim --- tools/perf/builtin-ftrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index abcdc49b7a98..272d3c70810e 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -815,7 +815,7 @@ static void display_histogram(int buckets[], bool use_nsec) bar_len = buckets[0] * bar_total / total; printf(" %4d - %-4d %s | %10d | %.*s%*s |\n", - 0, 1, "us", buckets[0], bar_len, bar, bar_total - bar_len, ""); + 0, 1, use_nsec ? "ns" : "us", buckets[0], bar_len, bar, bar_total - bar_len, ""); for (i = 1; i < NUM_BUCKET - 1; i++) { int start = (1 << (i - 1)); -- cgit v1.2.3 From ba993e5ada1ddce7a71140dc85ef65bc2cd981bc Mon Sep 17 00:00:00 2001 From: James Clark Date: Tue, 29 Oct 2024 14:37:33 +0000 Subject: perf arm-spe: Use old behavior when opening old SPE files Since the linked commit, we stopped interpreting data source if the perf.data file doesn't have the new metadata version. This means that perf c2c will show no samples in this case. Keep the old behavior so old files can be opened, but also still show the new warning that updating might improve the decoding. Also re-write the warning to be more concise and specific to a user. Fixes: ba5e7169e548 ("perf arm-spe: Use metadata to decide the data source feature") Signed-off-by: James Clark Reviewed-by: Leo Yan Cc: Julio.Suarez@arm.com Cc: Kiel.Friedt@arm.com Cc: Ryan.Roberts@arm.com Cc: Will Deacon Cc: Mike Leach Cc: linux-arm-kernel@lists.infradead.org Cc: Besar Wicaksono Cc: John Garry Link: https://lore.kernel.org/r/20241029143734.291638-1-james.clark@linaro.org Signed-off-by: Namhyung Kim --- tools/perf/util/arm-spe.c | 50 +++++++++++++++++++++++------------------------ 1 file changed, 24 insertions(+), 26 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c index a291a412f6a1..dbf13f47879c 100644 --- a/tools/perf/util/arm-spe.c +++ b/tools/perf/util/arm-spe.c @@ -562,37 +562,35 @@ static bool arm_spe__is_common_ds_encoding(struct arm_spe_queue *speq) u64 *metadata = NULL; u64 midr = 0; - /* - * Metadata version 1 doesn't contain any info for MIDR. - * Simply return false in this case. - */ + /* Metadata version 1 assumes all CPUs are the same (old behavior) */ if (spe->metadata_ver == 1) { - pr_warning_once("The data file contains metadata version 1, " - "which is absent the info for data source. " - "Please upgrade the tool to record data.\n"); - return false; - } - - /* CPU ID is -1 for per-thread mode */ - if (speq->cpu < 0) { - /* - * On the heterogeneous system, due to CPU ID is -1, - * cannot confirm the data source packet is supported. - */ - if (!spe->is_homogeneous) - return false; + const char *cpuid; - /* In homogeneous system, simply use CPU0's metadata */ - if (spe->metadata) - metadata = spe->metadata[0]; + pr_warning_once("Old SPE metadata, re-record to improve decode accuracy\n"); + cpuid = perf_env__cpuid(spe->session->evlist->env); + midr = strtol(cpuid, NULL, 16); } else { - metadata = arm_spe__get_metadata_by_cpu(spe, speq->cpu); - } + /* CPU ID is -1 for per-thread mode */ + if (speq->cpu < 0) { + /* + * On the heterogeneous system, due to CPU ID is -1, + * cannot confirm the data source packet is supported. + */ + if (!spe->is_homogeneous) + return false; + + /* In homogeneous system, simply use CPU0's metadata */ + if (spe->metadata) + metadata = spe->metadata[0]; + } else { + metadata = arm_spe__get_metadata_by_cpu(spe, speq->cpu); + } - if (!metadata) - return false; + if (!metadata) + return false; - midr = metadata[ARM_SPE_CPU_MIDR]; + midr = metadata[ARM_SPE_CPU_MIDR]; + } is_in_cpu_list = is_midr_in_range_list(midr, common_ds_encoding_cpus); if (is_in_cpu_list) -- cgit v1.2.3 From 75cd027cbcb161e277209e20df14f0818c62d9e7 Mon Sep 17 00:00:00 2001 From: James Morse Date: Wed, 30 Oct 2024 16:03:17 +0000 Subject: KVM: arm64: selftests: Test ID_AA64PFR0.MPAM isn't completely ignored The ID_AA64PFR0.MPAM bit was previously accidentally exposed to guests, and is ignored by KVM. KVM will always present the guest with 0 here, and trap the MPAM system registers to inject an undef. But, this value is still needed to prevent migration when the value is incompatible with the target hardware. Add a kvm unit test to try and write multiple values to ID_AA64PFR0.MPAM. Only the hardware value previously exposed should be ignored, all other values should be rejected. Signed-off-by: James Morse Signed-off-by: Joey Gouly Tested-by: Shameer Kolothum Reviewed-by: Gavin Shan Reviewed-by: Marc Zyngier Link: https://lore.kernel.org/r/20241030160317.2528209-8-joey.gouly@arm.com Signed-off-by: Oliver Upton --- tools/testing/selftests/kvm/aarch64/set_id_regs.c | 99 ++++++++++++++++++++++- 1 file changed, 98 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/aarch64/set_id_regs.c b/tools/testing/selftests/kvm/aarch64/set_id_regs.c index b87e53580bfc..a79b7f18452d 100644 --- a/tools/testing/selftests/kvm/aarch64/set_id_regs.c +++ b/tools/testing/selftests/kvm/aarch64/set_id_regs.c @@ -443,6 +443,101 @@ static void test_vm_ftr_id_regs(struct kvm_vcpu *vcpu, bool aarch64_only) } } +#define MPAM_IDREG_TEST 6 +static void test_user_set_mpam_reg(struct kvm_vcpu *vcpu) +{ + uint64_t masks[KVM_ARM_FEATURE_ID_RANGE_SIZE]; + struct reg_mask_range range = { + .addr = (__u64)masks, + }; + uint64_t val; + int idx, err; + + /* + * If ID_AA64PFR0.MPAM is _not_ officially modifiable and is zero, + * check that if it can be set to 1, (i.e. it is supported by the + * hardware), that it can't be set to other values. + */ + + /* Get writable masks for feature ID registers */ + memset(range.reserved, 0, sizeof(range.reserved)); + vm_ioctl(vcpu->vm, KVM_ARM_GET_REG_WRITABLE_MASKS, &range); + + /* Writeable? Nothing to test! */ + idx = encoding_to_range_idx(SYS_ID_AA64PFR0_EL1); + if ((masks[idx] & ID_AA64PFR0_EL1_MPAM_MASK) == ID_AA64PFR0_EL1_MPAM_MASK) { + ksft_test_result_skip("ID_AA64PFR0_EL1.MPAM is officially writable, nothing to test\n"); + return; + } + + /* Get the id register value */ + vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), &val); + + /* Try to set MPAM=0. This should always be possible. */ + val &= ~ID_AA64PFR0_EL1_MPAM_MASK; + val |= FIELD_PREP(ID_AA64PFR0_EL1_MPAM_MASK, 0); + err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), val); + if (err) + ksft_test_result_fail("ID_AA64PFR0_EL1.MPAM=0 was not accepted\n"); + else + ksft_test_result_pass("ID_AA64PFR0_EL1.MPAM=0 worked\n"); + + /* Try to set MPAM=1 */ + val &= ~ID_AA64PFR0_EL1_MPAM_MASK; + val |= FIELD_PREP(ID_AA64PFR0_EL1_MPAM_MASK, 1); + err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), val); + if (err) + ksft_test_result_skip("ID_AA64PFR0_EL1.MPAM is not writable, nothing to test\n"); + else + ksft_test_result_pass("ID_AA64PFR0_EL1.MPAM=1 was writable\n"); + + /* Try to set MPAM=2 */ + val &= ~ID_AA64PFR0_EL1_MPAM_MASK; + val |= FIELD_PREP(ID_AA64PFR0_EL1_MPAM_MASK, 2); + err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), val); + if (err) + ksft_test_result_pass("ID_AA64PFR0_EL1.MPAM not arbitrarily modifiable\n"); + else + ksft_test_result_fail("ID_AA64PFR0_EL1.MPAM value should not be ignored\n"); + + /* And again for ID_AA64PFR1_EL1.MPAM_frac */ + idx = encoding_to_range_idx(SYS_ID_AA64PFR1_EL1); + if ((masks[idx] & ID_AA64PFR1_EL1_MPAM_frac_MASK) == ID_AA64PFR1_EL1_MPAM_frac_MASK) { + ksft_test_result_skip("ID_AA64PFR1_EL1.MPAM_frac is officially writable, nothing to test\n"); + return; + } + + /* Get the id register value */ + vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR1_EL1), &val); + + /* Try to set MPAM_frac=0. This should always be possible. */ + val &= ~ID_AA64PFR1_EL1_MPAM_frac_MASK; + val |= FIELD_PREP(ID_AA64PFR1_EL1_MPAM_frac_MASK, 0); + err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR1_EL1), val); + if (err) + ksft_test_result_fail("ID_AA64PFR0_EL1.MPAM_frac=0 was not accepted\n"); + else + ksft_test_result_pass("ID_AA64PFR0_EL1.MPAM_frac=0 worked\n"); + + /* Try to set MPAM_frac=1 */ + val &= ~ID_AA64PFR1_EL1_MPAM_frac_MASK; + val |= FIELD_PREP(ID_AA64PFR1_EL1_MPAM_frac_MASK, 1); + err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR1_EL1), val); + if (err) + ksft_test_result_skip("ID_AA64PFR1_EL1.MPAM_frac is not writable, nothing to test\n"); + else + ksft_test_result_pass("ID_AA64PFR0_EL1.MPAM_frac=1 was writable\n"); + + /* Try to set MPAM_frac=2 */ + val &= ~ID_AA64PFR1_EL1_MPAM_frac_MASK; + val |= FIELD_PREP(ID_AA64PFR1_EL1_MPAM_frac_MASK, 2); + err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR1_EL1), val); + if (err) + ksft_test_result_pass("ID_AA64PFR1_EL1.MPAM_frac not arbitrarily modifiable\n"); + else + ksft_test_result_fail("ID_AA64PFR1_EL1.MPAM_frac value should not be ignored\n"); +} + static void test_guest_reg_read(struct kvm_vcpu *vcpu) { bool done = false; @@ -581,12 +676,14 @@ int main(void) ARRAY_SIZE(ftr_id_aa64isar2_el1) + ARRAY_SIZE(ftr_id_aa64pfr0_el1) + ARRAY_SIZE(ftr_id_aa64pfr1_el1) + ARRAY_SIZE(ftr_id_aa64mmfr0_el1) + ARRAY_SIZE(ftr_id_aa64mmfr1_el1) + ARRAY_SIZE(ftr_id_aa64mmfr2_el1) + - ARRAY_SIZE(ftr_id_aa64zfr0_el1) - ARRAY_SIZE(test_regs) + 2; + ARRAY_SIZE(ftr_id_aa64zfr0_el1) - ARRAY_SIZE(test_regs) + 2 + + MPAM_IDREG_TEST; ksft_set_plan(test_cnt); test_vm_ftr_id_regs(vcpu, aarch64_only); test_vcpu_ftr_id_regs(vcpu); + test_user_set_mpam_reg(vcpu); test_guest_reg_read(vcpu); -- cgit v1.2.3 From 4138e9ec00936c9fe7d0fe961e32f381b1e36926 Mon Sep 17 00:00:00 2001 From: Antonio Quartulli Date: Tue, 29 Oct 2024 11:47:14 +0100 Subject: netlink: add NLA_POLICY_MAX_LEN macro Similarly to NLA_POLICY_MIN_LEN, NLA_POLICY_MAX_LEN defines a policy with a maximum length value. The netlink generator for YAML specs has been extended accordingly. Signed-off-by: Antonio Quartulli Reviewed-by: Donald Hunter Link: https://patch.msgid.link/20241029-b4-ovpn-v11-1-de4698c73a25@openvpn.net Signed-off-by: Jakub Kicinski --- tools/net/ynl/ynl-gen-c.py | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py index 1a825b4081b2..aa22eb092475 100755 --- a/tools/net/ynl/ynl-gen-c.py +++ b/tools/net/ynl/ynl-gen-c.py @@ -481,7 +481,7 @@ class TypeBinary(Type): pass elif len(self.checks) == 1: check_name = list(self.checks)[0] - if check_name not in {'exact-len', 'min-len'}: + if check_name not in {'exact-len', 'min-len', 'max-len'}: raise Exception('Unsupported check for binary type: ' + check_name) else: raise Exception('More than one check for binary type not implemented, yet') @@ -492,6 +492,8 @@ class TypeBinary(Type): mem = 'NLA_POLICY_EXACT_LEN(' + self.get_limit_str('exact-len') + ')' elif 'min-len' in self.checks: mem = '{ .len = ' + self.get_limit_str('min-len') + ', }' + elif 'max-len' in self.checks: + mem = 'NLA_POLICY_MAX_LEN(' + self.get_limit_str('max-len') + ')' return mem -- cgit v1.2.3 From 7f66456d776a0c44b5e2b932bf8ed186ccec3bc1 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Tue, 29 Oct 2024 12:26:03 -0700 Subject: selftests: netdevsim: add fib_notifications to Makefile Commit 19d36d2971e6 ("selftests: netdevsim: Add fib_notifications test") added the test but didn't include it in the Makefile. Reviewed-by: Joe Damato Link: https://patch.msgid.link/20241029192603.509295-1-kuba@kernel.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/netdevsim/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/netdevsim/Makefile b/tools/testing/selftests/drivers/net/netdevsim/Makefile index 5bace0b7fb57..cc08b220323f 100644 --- a/tools/testing/selftests/drivers/net/netdevsim/Makefile +++ b/tools/testing/selftests/drivers/net/netdevsim/Makefile @@ -8,6 +8,7 @@ TEST_PROGS = devlink.sh \ ethtool-pause.sh \ ethtool-ring.sh \ fib.sh \ + fib_notifications.sh \ hw_stats_l3.sh \ nexthop.sh \ peer.sh \ -- cgit v1.2.3 From d3774a4b21e98c336d71d67b7605d91f344524c9 Mon Sep 17 00:00:00 2001 From: Li Zhijian Date: Wed, 30 Oct 2024 08:59:43 +0800 Subject: selftests/net: Fix ./ns-XXXXXX not cleanup ``` readonly STATS="$(mktemp -p /tmp ns-XXXXXX)" readonly BASE=`basename $STATS` ``` It could be a mistake to write to $BASE rather than $STATS, where $STATS is used to save the NSTAT_HISTORY and it will be cleaned up before exit. Although since we've been creating the wrong file this whole time and everything worked, it's fine to remove these 2 lines completely Signed-off-by: Li Zhijian Link: https://patch.msgid.link/20241030005943.400225-1-lizhijian@fujitsu.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/veth.sh | 2 -- 1 file changed, 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/veth.sh b/tools/testing/selftests/net/veth.sh index 4f1edbafb946..6bb7dfaa30b6 100755 --- a/tools/testing/selftests/net/veth.sh +++ b/tools/testing/selftests/net/veth.sh @@ -46,8 +46,6 @@ create_ns() { ip -n $BASE$ns addr add dev veth$ns $BM_NET_V4$ns/24 ip -n $BASE$ns addr add dev veth$ns $BM_NET_V6$ns/64 nodad done - echo "#kernel" > $BASE - chmod go-rw $BASE } __chk_flag() { -- cgit v1.2.3 From 8b55572e51805184353ee7d587c720a51818fb82 Mon Sep 17 00:00:00 2001 From: Kalesh Singh Date: Wed, 30 Oct 2024 10:17:50 -0700 Subject: tracing/selftests: Add tracefs mount options test Add a selftest to check that the tracefs gid mount option is applied correctly. ./ftracetest test.d/00basic/mount_options.tc Use the new readme string "[gid=] as a requirement and also update test_ownership.tc requirements to use this. Cc: Eric Sandeen Cc: Mathieu Desnoyers Cc: Shuah Khan Cc: Ali Zahraee Cc: Christian Brauner Cc: David Howells Cc: Masami Hiramatsu Link: https://lore.kernel.org/20241030171928.4168869-4-kaleshsingh@google.com Signed-off-by: Kalesh Singh Signed-off-by: Steven Rostedt (Google) --- .../ftrace/test.d/00basic/mount_options.tc | 101 +++++++++++++++++++++ .../ftrace/test.d/00basic/test_ownership.tc | 16 +--- tools/testing/selftests/ftrace/test.d/functions | 25 +++++ 3 files changed, 129 insertions(+), 13 deletions(-) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/mount_options.tc (limited to 'tools') diff --git a/tools/testing/selftests/ftrace/test.d/00basic/mount_options.tc b/tools/testing/selftests/ftrace/test.d/00basic/mount_options.tc new file mode 100644 index 000000000000..35e8d47d6072 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/00basic/mount_options.tc @@ -0,0 +1,101 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test tracefs GID mount option +# requires: "[gid=]":README + +fail() { + local msg="$1" + + echo "FAILED: $msg" + exit_fail +} + +find_alternate_gid() { + local original_gid="$1" + tac /etc/group | grep -v ":$original_gid:" | head -1 | cut -d: -f3 +} + +mount_tracefs_with_options() { + local mount_point="$1" + local options="$2" + + mount -t tracefs -o "$options" nodev "$mount_point" + + setup +} + +unmount_tracefs() { + local mount_point="$1" + + # Need to make sure the mount isn't busy so that we can umount it + (cd $mount_point; finish_ftrace;) + + cleanup +} + +create_instance() { + local mount_point="$1" + local instance="$mount_point/instances/$(mktemp -u test-XXXXXX)" + + mkdir "$instance" + echo "$instance" +} + +remove_instance() { + local instance="$1" + + rmdir "$instance" +} + +check_gid() { + local mount_point="$1" + local expected_gid="$2" + + echo "Checking permission group ..." + + cd "$mount_point" + + for file in "." "events" "events/sched" "events/sched/sched_switch" "events/sched/sched_switch/enable"; do + local gid=`stat -c "%g" $file` + if [ "$gid" -ne "$expected_gid" ]; then + cd - # Return to the previous working directory (tracefs root) + fail "$(realpath $file): Expected group $expected_gid; Got group $gid" + fi + done + + cd - # Return to the previous working directory (tracefs root) +} + +test_gid_mount_option() { + local mount_point=$(get_mount_point) + local mount_options=$(get_mnt_options "$mount_point") + local original_group=$(stat -c "%g" .) + local other_group=$(find_alternate_gid "$original_group") + + # Set up mount options with new GID for testing + local new_options=`echo "$mount_options" | sed -e "s/gid=[0-9]*/gid=$other_group/"` + if [ "$new_options" = "$mount_options" ]; then + new_options="$mount_options,gid=$other_group" + mount_options="$mount_options,gid=$original_group" + fi + + # Unmount existing tracefs instance and mount with new GID + unmount_tracefs "$mount_point" + mount_tracefs_with_options "$mount_point" "$new_options" + + check_gid "$mount_point" "$other_group" + + # Check that files created after the mount inherit the GID + local instance=$(create_instance "$mount_point") + check_gid "$instance" "$other_group" + remove_instance "$instance" + + # Unmount and remount with the original GID + unmount_tracefs "$mount_point" + mount_tracefs_with_options "$mount_point" "$mount_options" + check_gid "$mount_point" "$original_group" +} + +test_gid_mount_option + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/00basic/test_ownership.tc b/tools/testing/selftests/ftrace/test.d/00basic/test_ownership.tc index 094419e190c2..e71cc3ad0bdf 100644 --- a/tools/testing/selftests/ftrace/test.d/00basic/test_ownership.tc +++ b/tools/testing/selftests/ftrace/test.d/00basic/test_ownership.tc @@ -1,24 +1,14 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: Test file and directory ownership changes for eventfs +# requires: "[gid=]":README original_group=`stat -c "%g" .` original_owner=`stat -c "%u" .` -mount_point=`stat -c '%m' .` +local mount_point=$(get_mount_point) -# If stat -c '%m' does not work (e.g. busybox) or failed, try to use the -# current working directory (which should be a tracefs) as the mount point. -if [ ! -d "$mount_point" ]; then - if mount | grep -qw $PWD ; then - mount_point=$PWD - else - # If PWD doesn't work, that is an environmental problem. - exit_unresolved - fi -fi - -mount_options=`mount | grep "$mount_point" | sed -e 's/.*(\(.*\)).*/\1/'` +mount_options=$(get_mnt_options "$mount_point") # find another owner and group that is not the original other_group=`tac /etc/group | grep -v ":$original_group:" | head -1 | cut -d: -f3` diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index 779f3e62ec90..84d6a9c7ad67 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -193,3 +193,28 @@ ftrace_errlog_check() { # err-prefix command-with-error-pos-by-^ command-file # " Command: " and "^\n" => 13 test $(expr 13 + $pos) -eq $N } + +# Helper to get the tracefs mount point +get_mount_point() { + local mount_point=`stat -c '%m' .` + + # If stat -c '%m' does not work (e.g. busybox) or failed, try to use the + # current working directory (which should be a tracefs) as the mount point. + if [ ! -d "$mount_point" ]; then + if mount | grep -qw "$PWD"; then + mount_point=$PWD + else + # If PWD doesn't work, that is an environmental problem. + exit_unresolved + fi + fi + echo "$mount_point" +} + +# Helper function to retrieve mount options for a given mount point +get_mnt_options() { + local mnt_point="$1" + local opts=$(mount | grep -m1 "$mnt_point" | sed -e 's/.*(\(.*\)).*/\1/') + + echo "$opts" +} \ No newline at end of file -- cgit v1.2.3 From 17a2409783f141c9fcd03b140d17bbb75e98c630 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 29 Oct 2024 12:34:21 +0000 Subject: kselftest/arm64: Use ksft_perror() to log MTE failures The logging in the allocation helpers variously uses ksft_print_msg() with very intermittent logging of errno and perror() (which won't produce KTAP conformant output) when logging the result of API calls that set errno. Standardise on using the ksft_perror() helper in these cases so that more information is available should the tests fail. Signed-off-by: Mark Brown Acked-by: Lorenzo Stoakes Link: https://lore.kernel.org/r/20241029-arm64-mte-test-logging-v1-1-a128e732e36e@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/mte/mte_common_util.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c index 17fbe5cfe472..a1dc2fe5285b 100644 --- a/tools/testing/selftests/arm64/mte/mte_common_util.c +++ b/tools/testing/selftests/arm64/mte/mte_common_util.c @@ -150,13 +150,13 @@ static void *__mte_allocate_memory_range(size_t size, int mem_type, int mapping, map_flag |= MAP_PRIVATE; ptr = mmap(NULL, entire_size, prot_flag, map_flag, fd, 0); if (ptr == MAP_FAILED) { - ksft_print_msg("FAIL: mmap allocation\n"); + ksft_perror("mmap()"); return NULL; } if (mem_type == USE_MPROTECT) { if (mprotect(ptr, entire_size, prot_flag | PROT_MTE)) { + ksft_perror("mprotect(PROT_MTE)"); munmap(ptr, size); - ksft_print_msg("FAIL: mprotect PROT_MTE property\n"); return NULL; } } @@ -190,13 +190,13 @@ void *mte_allocate_file_memory(size_t size, int mem_type, int mapping, bool tags lseek(fd, 0, SEEK_SET); for (index = INIT_BUFFER_SIZE; index < size; index += INIT_BUFFER_SIZE) { if (write(fd, buffer, INIT_BUFFER_SIZE) != INIT_BUFFER_SIZE) { - perror("initialising buffer"); + ksft_perror("initialising buffer"); return NULL; } } index -= INIT_BUFFER_SIZE; if (write(fd, buffer, size - index) != size - index) { - perror("initialising buffer"); + ksft_perror("initialising buffer"); return NULL; } return __mte_allocate_memory_range(size, mem_type, mapping, 0, 0, tags, fd); @@ -217,12 +217,12 @@ void *mte_allocate_file_memory_tag_range(size_t size, int mem_type, int mapping, lseek(fd, 0, SEEK_SET); for (index = INIT_BUFFER_SIZE; index < map_size; index += INIT_BUFFER_SIZE) if (write(fd, buffer, INIT_BUFFER_SIZE) != INIT_BUFFER_SIZE) { - perror("initialising buffer"); + ksft_perror("initialising buffer"); return NULL; } index -= INIT_BUFFER_SIZE; if (write(fd, buffer, map_size - index) != map_size - index) { - perror("initialising buffer"); + ksft_perror("initialising buffer"); return NULL; } return __mte_allocate_memory_range(size, mem_type, mapping, range_before, @@ -358,7 +358,7 @@ int create_temp_file(void) /* Create a file in the tmpfs filesystem */ fd = mkstemp(&filename[0]); if (fd == -1) { - perror(filename); + ksft_perror(filename); ksft_print_msg("FAIL: Unable to open temporary file\n"); return 0; } -- cgit v1.2.3 From bc2ca3680b30869ee9a764ab72c143070f1afec8 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Fri, 2 Aug 2024 11:55:04 -0700 Subject: KVM: x86: Disallow changing MSR_PLATFORM_INFO after vCPU has run Tag MSR_PLATFORM_INFO as a feature MSR (because it is), i.e. disallow it from being modified after the vCPU has run. To make KVM's selftest compliant, simply delete the userspace MSR write that restores KVM's original value at the end of the test. Verifying that userspace can write back what it originally read is uninteresting in this particular case, because KVM doesn't enforce _any_ bits in the MSR, i.e. userspace should be able to write any arbitrary value. Link: https://lore.kernel.org/r/20240802185511.305849-3-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/platform_info_test.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/platform_info_test.c b/tools/testing/selftests/kvm/x86_64/platform_info_test.c index eda88080c186..9cbf283ebc55 100644 --- a/tools/testing/selftests/kvm/x86_64/platform_info_test.c +++ b/tools/testing/selftests/kvm/x86_64/platform_info_test.c @@ -72,8 +72,6 @@ int main(int argc, char *argv[]) } done: - vcpu_set_msr(vcpu, MSR_PLATFORM_INFO, msr_platform_info); - kvm_vm_free(vm); return 0; -- cgit v1.2.3 From b799e3e7da2c8b2ae03c977307b2f082fac6140e Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Fri, 2 Aug 2024 11:55:10 -0700 Subject: KVM: selftests: Verify get/set PERF_CAPABILITIES w/o guest PDMC behavior Add another testcase to x86's PMU capabilities test to verify that KVM's handling of userspace accesses to PERF_CAPABILITIES when the vCPU doesn't support the MSR (per the vCPU's CPUID). KVM's (newly established) ABI is that userspace MSR accesses are subject to architectural existence checks, but that if the MSR is advertised as supported _by KVM_, "bad" reads get '0' and writes of '0' are always allowed. Link: https://lore.kernel.org/r/20240802185511.305849-9-seanjc@google.com Signed-off-by: Sean Christopherson --- .../selftests/kvm/x86_64/vmx_pmu_caps_test.c | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c index 7c92536551cc..a1f5ff45d518 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c @@ -207,6 +207,29 @@ KVM_ONE_VCPU_TEST(vmx_pmu_caps, lbr_perf_capabilities, guest_code) TEST_ASSERT(!r, "Writing LBR_TOS should fail after disabling vPMU"); } +KVM_ONE_VCPU_TEST(vmx_pmu_caps, perf_capabilities_unsupported, guest_code) +{ + uint64_t val; + int i, r; + + vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, host_cap.capabilities); + val = vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES); + TEST_ASSERT_EQ(val, host_cap.capabilities); + + vcpu_clear_cpuid_feature(vcpu, X86_FEATURE_PDCM); + + val = vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES); + TEST_ASSERT_EQ(val, 0); + + vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, 0); + + for (i = 0; i < 64; i++) { + r = _vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, BIT_ULL(i)); + TEST_ASSERT(!r, "Setting PERF_CAPABILITIES bit %d (= 0x%llx) should fail without PDCM", + i, BIT_ULL(i)); + } +} + int main(int argc, char *argv[]) { TEST_REQUIRE(kvm_is_pmu_enabled()); -- cgit v1.2.3 From 0581dfbad9542061406c40eccab9037e59ea62c8 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Fri, 2 Aug 2024 11:55:11 -0700 Subject: KVM: selftests: Add a testcase for disabling feature MSRs init quirk Expand and rename the feature MSRs test to verify KVM's ABI and quirk for initializing feature MSRs. Exempt VM_CR{0,4}_FIXED1 from most tests as KVM intentionally takes full control of the MSRs, e.g. to prevent L1 from running L2 with bogus CR0 and/or CR4 values. Link: https://lore.kernel.org/r/20240802185511.305849-10-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/x86_64/feature_msrs_test.c | 113 +++++++++++++++++++++ .../selftests/kvm/x86_64/get_msr_index_features.c | 35 ------- 3 files changed, 114 insertions(+), 36 deletions(-) create mode 100644 tools/testing/selftests/kvm/x86_64/feature_msrs_test.c delete mode 100644 tools/testing/selftests/kvm/x86_64/get_msr_index_features.c (limited to 'tools') diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 156fbfae940f..f186888f0e00 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -67,7 +67,7 @@ TEST_PROGS_x86_64 += x86_64/nx_huge_pages_test.sh TEST_GEN_PROGS_x86_64 = x86_64/cpuid_test TEST_GEN_PROGS_x86_64 += x86_64/cr4_cpuid_sync_test TEST_GEN_PROGS_x86_64 += x86_64/dirty_log_page_splitting_test -TEST_GEN_PROGS_x86_64 += x86_64/get_msr_index_features +TEST_GEN_PROGS_x86_64 += x86_64/feature_msrs_test TEST_GEN_PROGS_x86_64 += x86_64/exit_on_emulation_failure_test TEST_GEN_PROGS_x86_64 += x86_64/fix_hypercall_test TEST_GEN_PROGS_x86_64 += x86_64/hwcr_msr_test diff --git a/tools/testing/selftests/kvm/x86_64/feature_msrs_test.c b/tools/testing/selftests/kvm/x86_64/feature_msrs_test.c new file mode 100644 index 000000000000..a72f13ae2edb --- /dev/null +++ b/tools/testing/selftests/kvm/x86_64/feature_msrs_test.c @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020, Red Hat, Inc. + */ +#include +#include +#include +#include +#include + +#include "test_util.h" +#include "kvm_util.h" +#include "processor.h" + +static bool is_kvm_controlled_msr(uint32_t msr) +{ + return msr == MSR_IA32_VMX_CR0_FIXED1 || msr == MSR_IA32_VMX_CR4_FIXED1; +} + +/* + * For VMX MSRs with a "true" variant, KVM requires userspace to set the "true" + * MSR, and doesn't allow setting the hidden version. + */ +static bool is_hidden_vmx_msr(uint32_t msr) +{ + switch (msr) { + case MSR_IA32_VMX_PINBASED_CTLS: + case MSR_IA32_VMX_PROCBASED_CTLS: + case MSR_IA32_VMX_EXIT_CTLS: + case MSR_IA32_VMX_ENTRY_CTLS: + return true; + default: + return false; + } +} + +static bool is_quirked_msr(uint32_t msr) +{ + return msr != MSR_AMD64_DE_CFG; +} + +static void test_feature_msr(uint32_t msr) +{ + const uint64_t supported_mask = kvm_get_feature_msr(msr); + uint64_t reset_value = is_quirked_msr(msr) ? supported_mask : 0; + struct kvm_vcpu *vcpu; + struct kvm_vm *vm; + + /* + * Don't bother testing KVM-controlled MSRs beyond verifying that the + * MSR can be read from userspace. Any value is effectively legal, as + * KVM is bound by x86 architecture, not by ABI. + */ + if (is_kvm_controlled_msr(msr)) + return; + + /* + * More goofy behavior. KVM reports the host CPU's actual revision ID, + * but initializes the vCPU's revision ID to an arbitrary value. + */ + if (msr == MSR_IA32_UCODE_REV) + reset_value = host_cpu_is_intel ? 0x100000000ULL : 0x01000065; + + /* + * For quirked MSRs, KVM's ABI is to initialize the vCPU's value to the + * full set of features supported by KVM. For non-quirked MSRs, and + * when the quirk is disabled, KVM must zero-initialize the MSR and let + * userspace do the configuration. + */ + vm = vm_create_with_one_vcpu(&vcpu, NULL); + TEST_ASSERT(vcpu_get_msr(vcpu, msr) == reset_value, + "Wanted 0x%lx for %squirked MSR 0x%x, got 0x%lx", + reset_value, is_quirked_msr(msr) ? "" : "non-", msr, + vcpu_get_msr(vcpu, msr)); + if (!is_hidden_vmx_msr(msr)) + vcpu_set_msr(vcpu, msr, supported_mask); + kvm_vm_free(vm); + + if (is_hidden_vmx_msr(msr)) + return; + + if (!kvm_has_cap(KVM_CAP_DISABLE_QUIRKS2) || + !(kvm_check_cap(KVM_CAP_DISABLE_QUIRKS2) & KVM_X86_QUIRK_STUFF_FEATURE_MSRS)) + return; + + vm = vm_create(1); + vm_enable_cap(vm, KVM_CAP_DISABLE_QUIRKS2, KVM_X86_QUIRK_STUFF_FEATURE_MSRS); + + vcpu = vm_vcpu_add(vm, 0, NULL); + TEST_ASSERT(!vcpu_get_msr(vcpu, msr), + "Quirk disabled, wanted '0' for MSR 0x%x, got 0x%lx", + msr, vcpu_get_msr(vcpu, msr)); + kvm_vm_free(vm); +} + +int main(int argc, char *argv[]) +{ + const struct kvm_msr_list *feature_list; + int i; + + /* + * Skip the entire test if MSR_FEATURES isn't supported, other tests + * will cover the "regular" list of MSRs, the coverage here is purely + * opportunistic and not interesting on its own. + */ + TEST_REQUIRE(kvm_has_cap(KVM_CAP_GET_MSR_FEATURES)); + + (void)kvm_get_msr_index_list(); + + feature_list = kvm_get_feature_msr_index_list(); + for (i = 0; i < feature_list->nmsrs; i++) + test_feature_msr(feature_list->indices[i]); +} diff --git a/tools/testing/selftests/kvm/x86_64/get_msr_index_features.c b/tools/testing/selftests/kvm/x86_64/get_msr_index_features.c deleted file mode 100644 index d09b3cbcadc6..000000000000 --- a/tools/testing/selftests/kvm/x86_64/get_msr_index_features.c +++ /dev/null @@ -1,35 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Test that KVM_GET_MSR_INDEX_LIST and - * KVM_GET_MSR_FEATURE_INDEX_LIST work as intended - * - * Copyright (C) 2020, Red Hat, Inc. - */ -#include -#include -#include -#include -#include - -#include "test_util.h" -#include "kvm_util.h" -#include "processor.h" - -int main(int argc, char *argv[]) -{ - const struct kvm_msr_list *feature_list; - int i; - - /* - * Skip the entire test if MSR_FEATURES isn't supported, other tests - * will cover the "regular" list of MSRs, the coverage here is purely - * opportunistic and not interesting on its own. - */ - TEST_REQUIRE(kvm_has_cap(KVM_CAP_GET_MSR_FEATURES)); - - (void)kvm_get_msr_index_list(); - - feature_list = kvm_get_feature_msr_index_list(); - for (i = 0; i < feature_list->nmsrs; i++) - kvm_get_feature_msr(feature_list->indices[i]); -} -- cgit v1.2.3 From f2c5aa31670d8532dc820c110faf96d0cdbba7d9 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:28 -0700 Subject: KVM: selftests: Precisely mask off dynamic fields in CPUID test When comparing vCPU CPUID entries against KVM's supported CPUID, mask off only the dynamic fields/bits instead of skipping the entire entry. Precisely masking bits isn't meaningfully more difficult than skipping entire entries, and will be necessary to maintain test coverage when a future commit enables OSXSAVE by default, i.e. makes one bit in all of CPUID.0x1 dynamic. Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-3-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/cpuid_test.c | 63 +++++++++++++++---------- 1 file changed, 37 insertions(+), 26 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/cpuid_test.c b/tools/testing/selftests/kvm/x86_64/cpuid_test.c index fec03b11b059..f7fdcef5fa59 100644 --- a/tools/testing/selftests/kvm/x86_64/cpuid_test.c +++ b/tools/testing/selftests/kvm/x86_64/cpuid_test.c @@ -12,17 +12,16 @@ #include "kvm_util.h" #include "processor.h" -/* CPUIDs known to differ */ -struct { - u32 function; - u32 index; -} mangled_cpuids[] = { - /* - * These entries depend on the vCPU's XCR0 register and IA32_XSS MSR, - * which are not controlled for by this test. - */ - {.function = 0xd, .index = 0}, - {.function = 0xd, .index = 1}, +struct cpuid_mask { + union { + struct { + u32 eax; + u32 ebx; + u32 ecx; + u32 edx; + }; + u32 regs[4]; + }; }; static void test_guest_cpuids(struct kvm_cpuid2 *guest_cpuid) @@ -56,17 +55,23 @@ static void guest_main(struct kvm_cpuid2 *guest_cpuid) GUEST_DONE(); } -static bool is_cpuid_mangled(const struct kvm_cpuid_entry2 *entrie) +static struct cpuid_mask get_const_cpuid_mask(const struct kvm_cpuid_entry2 *entry) { - int i; - - for (i = 0; i < ARRAY_SIZE(mangled_cpuids); i++) { - if (mangled_cpuids[i].function == entrie->function && - mangled_cpuids[i].index == entrie->index) - return true; + struct cpuid_mask mask; + + memset(&mask, 0xff, sizeof(mask)); + + switch (entry->function) { + case 0xd: + /* + * CPUID.0xD.{0,1}.EBX enumerate XSAVE size based on the current + * XCR0 and IA32_XSS MSR values. + */ + if (entry->index < 2) + mask.ebx = 0; + break; } - - return false; + return mask; } static void compare_cpuids(const struct kvm_cpuid2 *cpuid1, @@ -79,6 +84,8 @@ static void compare_cpuids(const struct kvm_cpuid2 *cpuid1, "CPUID nent mismatch: %d vs. %d", cpuid1->nent, cpuid2->nent); for (i = 0; i < cpuid1->nent; i++) { + struct cpuid_mask mask; + e1 = &cpuid1->entries[i]; e2 = &cpuid2->entries[i]; @@ -88,15 +95,19 @@ static void compare_cpuids(const struct kvm_cpuid2 *cpuid1, i, e1->function, e1->index, e1->flags, e2->function, e2->index, e2->flags); - if (is_cpuid_mangled(e1)) - continue; + /* Mask off dynamic bits, e.g. OSXSAVE, when comparing entries. */ + mask = get_const_cpuid_mask(e1); - TEST_ASSERT(e1->eax == e2->eax && e1->ebx == e2->ebx && - e1->ecx == e2->ecx && e1->edx == e2->edx, + TEST_ASSERT((e1->eax & mask.eax) == (e2->eax & mask.eax) && + (e1->ebx & mask.ebx) == (e2->ebx & mask.ebx) && + (e1->ecx & mask.ecx) == (e2->ecx & mask.ecx) && + (e1->edx & mask.edx) == (e2->edx & mask.edx), "CPUID 0x%x.%x differ: 0x%x:0x%x:0x%x:0x%x vs 0x%x:0x%x:0x%x:0x%x", e1->function, e1->index, - e1->eax, e1->ebx, e1->ecx, e1->edx, - e2->eax, e2->ebx, e2->ecx, e2->edx); + e1->eax & mask.eax, e1->ebx & mask.ebx, + e1->ecx & mask.ecx, e1->edx & mask.edx, + e2->eax & mask.eax, e2->ebx & mask.ebx, + e2->ecx & mask.ecx, e2->edx & mask.edx); } } -- cgit v1.2.3 From 164cea33bfedf883651d8d8b2db2fa867b48ecb0 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:29 -0700 Subject: KVM: selftests: Mask off OSPKE and OSXSAVE when comparing CPUID entries Mask off OSPKE and OSXSAVE, which are toggled based on corresponding CR4 enabling bits, when comparing vCPU CPUID against KVM's supported CPUID. This will allow setting OSXSAVE by default when creating vCPUs, without causing test failures (KVM doesn't enumerate OSXSAVE=1). Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-4-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/cpuid_test.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/cpuid_test.c b/tools/testing/selftests/kvm/x86_64/cpuid_test.c index f7fdcef5fa59..7b3fda6842bc 100644 --- a/tools/testing/selftests/kvm/x86_64/cpuid_test.c +++ b/tools/testing/selftests/kvm/x86_64/cpuid_test.c @@ -62,6 +62,12 @@ static struct cpuid_mask get_const_cpuid_mask(const struct kvm_cpuid_entry2 *ent memset(&mask, 0xff, sizeof(mask)); switch (entry->function) { + case 0x1: + mask.regs[X86_FEATURE_OSXSAVE.reg] &= ~BIT(X86_FEATURE_OSXSAVE.bit); + break; + case 0x7: + mask.regs[X86_FEATURE_OSPKE.reg] &= ~BIT(X86_FEATURE_OSPKE.bit); + break; case 0xd: /* * CPUID.0xD.{0,1}.EBX enumerate XSAVE size based on the current -- cgit v1.2.3 From 2b9a126a2986fef604275d7d198163c9c3ced172 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:30 -0700 Subject: KVM: selftests: Rework OSXSAVE CR4=>CPUID test to play nice with AVX insns Rework the CR4/CPUID sync test to clear CR4.OSXSAVE, do CPUID, and restore CR4.OSXSAVE in assembly, so that there is zero chance of AVX instructions being executed while CR4.OSXSAVE is disabled. This will allow enabling CR4.OSXSAVE by default for selftests vCPUs as a general means of playing nice with AVX instructions. Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-5-seanjc@google.com Signed-off-by: Sean Christopherson --- .../selftests/kvm/x86_64/cr4_cpuid_sync_test.c | 50 +++++++++++++++------- 1 file changed, 34 insertions(+), 16 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c index 624dc725e14d..da818afb7031 100644 --- a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c +++ b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c @@ -19,15 +19,14 @@ #include "kvm_util.h" #include "processor.h" -static inline bool cr4_cpuid_is_sync(void) -{ - uint64_t cr4 = get_cr4(); - - return (this_cpu_has(X86_FEATURE_OSXSAVE) == !!(cr4 & X86_CR4_OSXSAVE)); -} +#define MAGIC_HYPERCALL_PORT 0x80 static void guest_code(void) { + u32 regs[4] = { + [KVM_CPUID_EAX] = X86_FEATURE_OSXSAVE.function, + [KVM_CPUID_ECX] = X86_FEATURE_OSXSAVE.index, + }; uint64_t cr4; /* turn on CR4.OSXSAVE */ @@ -36,13 +35,29 @@ static void guest_code(void) set_cr4(cr4); /* verify CR4.OSXSAVE == CPUID.OSXSAVE */ - GUEST_ASSERT(cr4_cpuid_is_sync()); - - /* notify hypervisor to change CR4 */ - GUEST_SYNC(0); - - /* check again */ - GUEST_ASSERT(cr4_cpuid_is_sync()); + GUEST_ASSERT(this_cpu_has(X86_FEATURE_OSXSAVE)); + + /* + * Notify hypervisor to clear CR4.0SXSAVE, do CPUID and save output, + * and then restore CR4. Do this all in assembly to ensure no AVX + * instructions are executed while OSXSAVE=0. + */ + asm volatile ( + "out %%al, $" __stringify(MAGIC_HYPERCALL_PORT) "\n\t" + "cpuid\n\t" + "mov %%rdi, %%cr4\n\t" + : "+a" (regs[KVM_CPUID_EAX]), + "=b" (regs[KVM_CPUID_EBX]), + "+c" (regs[KVM_CPUID_ECX]), + "=d" (regs[KVM_CPUID_EDX]) + : "D" (get_cr4()) + ); + + /* Verify KVM cleared OSXSAVE in CPUID when it was cleared in CR4. */ + GUEST_ASSERT(!(regs[X86_FEATURE_OSXSAVE.reg] & BIT(X86_FEATURE_OSXSAVE.bit))); + + /* Verify restoring CR4 also restored OSXSAVE in CPUID. */ + GUEST_ASSERT(this_cpu_has(X86_FEATURE_OSXSAVE)); GUEST_DONE(); } @@ -62,13 +77,16 @@ int main(int argc, char *argv[]) vcpu_run(vcpu); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO); - switch (get_ucall(vcpu, &uc)) { - case UCALL_SYNC: + if (vcpu->run->io.port == MAGIC_HYPERCALL_PORT && + vcpu->run->io.direction == KVM_EXIT_IO_OUT) { /* emulate hypervisor clearing CR4.OSXSAVE */ vcpu_sregs_get(vcpu, &sregs); sregs.cr4 &= ~X86_CR4_OSXSAVE; vcpu_sregs_set(vcpu, &sregs); - break; + continue; + } + + switch (get_ucall(vcpu, &uc)) { case UCALL_ABORT: REPORT_GUEST_ASSERT(uc); break; -- cgit v1.2.3 From 8b14c4d85d031f7700fa4e042aebf99d933971f0 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:31 -0700 Subject: KVM: selftests: Configure XCR0 to max supported value by default To play nice with compilers generating AVX instructions, set CR4.OSXSAVE and configure XCR0 by default when creating selftests vCPUs. Some distros have switched gcc to '-march=x86-64-v3' by default, and while it's hard to find a CPU which doesn't support AVX today, many KVM selftests fail with ==== Test Assertion Failure ==== lib/x86_64/processor.c:570: Unhandled exception in guest pid=72747 tid=72747 errno=4 - Interrupted system call Unhandled exception '0x6' at guest RIP '0x4104f7' due to selftests not enabling AVX by default for the guest. The failure is easy to reproduce elsewhere with: $ make clean && CFLAGS='-march=x86-64-v3' make -j && ./x86_64/kvm_pv_test E.g. gcc-13 with -march=x86-64-v3 compiles this chunk from selftests' kvm_fixup_exception(): regs->rip = regs->r11; regs->r9 = regs->vector; regs->r10 = regs->error_code; into this monstronsity (which is clever, but oof): 405313: c4 e1 f9 6e c8 vmovq %rax,%xmm1 405318: 48 89 68 08 mov %rbp,0x8(%rax) 40531c: 48 89 e8 mov %rbp,%rax 40531f: c4 c3 f1 22 c4 01 vpinsrq $0x1,%r12,%xmm1,%xmm0 405325: 49 89 6d 38 mov %rbp,0x38(%r13) 405329: c5 fa 7f 45 00 vmovdqu %xmm0,0x0(%rbp) Alternatively, KVM selftests could explicitly restrict the compiler to -march=x86-64-v2, but odds are very good that punting on AVX enabling will simply result in tests that "need" AVX doing their own thing, e.g. there are already three or so additional cleanups that can be done on top. Reported-by: Vitaly Kuznetsov Closes: https://lore.kernel.org/all/20240920154422.2890096-1-vkuznets@redhat.com Reviewed-and-tested-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-6-seanjc@google.com Signed-off-by: Sean Christopherson --- .../selftests/kvm/include/x86_64/processor.h | 5 +++++ tools/testing/selftests/kvm/lib/x86_64/processor.c | 24 ++++++++++++++++++++++ .../testing/selftests/kvm/x86_64/xcr0_cpuid_test.c | 6 +++--- 3 files changed, 32 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index e247f99e0473..645200e95f89 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -1049,6 +1049,11 @@ static inline void vcpu_set_cpuid(struct kvm_vcpu *vcpu) vcpu_ioctl(vcpu, KVM_GET_CPUID2, vcpu->cpuid); } +static inline void vcpu_get_cpuid(struct kvm_vcpu *vcpu) +{ + vcpu_ioctl(vcpu, KVM_GET_CPUID2, vcpu->cpuid); +} + void vcpu_set_cpuid_property(struct kvm_vcpu *vcpu, struct kvm_x86_cpu_property property, uint32_t value); diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 974bcd2df6d7..636b29ba8985 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -506,6 +506,8 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) sregs.cr0 = X86_CR0_PE | X86_CR0_NE | X86_CR0_PG; sregs.cr4 |= X86_CR4_PAE | X86_CR4_OSFXSR; + if (kvm_cpu_has(X86_FEATURE_XSAVE)) + sregs.cr4 |= X86_CR4_OSXSAVE; sregs.efer |= (EFER_LME | EFER_LMA | EFER_NX); kvm_seg_set_unusable(&sregs.ldt); @@ -519,6 +521,20 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) vcpu_sregs_set(vcpu, &sregs); } +static void vcpu_init_xcrs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) +{ + struct kvm_xcrs xcrs = { + .nr_xcrs = 1, + .xcrs[0].xcr = 0, + .xcrs[0].value = kvm_cpu_supported_xcr0(), + }; + + if (!kvm_cpu_has(X86_FEATURE_XSAVE)) + return; + + vcpu_xcrs_set(vcpu, &xcrs); +} + static void set_idt_entry(struct kvm_vm *vm, int vector, unsigned long addr, int dpl, unsigned short selector) { @@ -675,6 +691,7 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id) vcpu = __vm_vcpu_add(vm, vcpu_id); vcpu_init_cpuid(vcpu, kvm_get_supported_cpuid()); vcpu_init_sregs(vm, vcpu); + vcpu_init_xcrs(vm, vcpu); /* Setup guest general purpose registers */ vcpu_regs_get(vcpu, ®s); @@ -686,6 +703,13 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id) mp_state.mp_state = 0; vcpu_mp_state_set(vcpu, &mp_state); + /* + * Refresh CPUID after setting SREGS and XCR0, so that KVM's "runtime" + * updates to guest CPUID, e.g. for OSXSAVE and XSAVE state size, are + * reflected into selftests' vCPU CPUID cache, i.e. so that the cache + * is consistent with vCPU state. + */ + vcpu_get_cpuid(vcpu); return vcpu; } diff --git a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c index 95ce192d0753..a4aecdc77da5 100644 --- a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c +++ b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c @@ -48,16 +48,16 @@ do { \ static void guest_code(void) { - uint64_t xcr0_reset; + uint64_t initial_xcr0; uint64_t supported_xcr0; int i, vector; set_cr4(get_cr4() | X86_CR4_OSXSAVE); - xcr0_reset = xgetbv(0); + initial_xcr0 = xgetbv(0); supported_xcr0 = this_cpu_supported_xcr0(); - GUEST_ASSERT(xcr0_reset == XFEATURE_MASK_FP); + GUEST_ASSERT(initial_xcr0 == supported_xcr0); /* Check AVX */ ASSERT_XFEATURE_DEPENDENCIES(supported_xcr0, -- cgit v1.2.3 From 8ae01bf64caaea5562f3af40a2fbe404a1e79403 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:32 -0700 Subject: KVM: selftests: Verify XCR0 can be "downgraded" and "upgraded" Now that KVM selftests enable all supported XCR0 features by default, add a testcase to the XCR0 vs. CPUID test to verify that the guest can disable everything except the legacy FPU in XCR0, and then re-enable the full feature set, which is kinda sorta what the test did before XCR0 was setup by default. Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-7-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c index a4aecdc77da5..c8a5c5e51661 100644 --- a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c +++ b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c @@ -79,6 +79,11 @@ static void guest_code(void) ASSERT_ALL_OR_NONE_XFEATURE(supported_xcr0, XFEATURE_MASK_XTILE); + vector = xsetbv_safe(0, XFEATURE_MASK_FP); + __GUEST_ASSERT(!vector, + "Expected success on XSETBV(FP), got vector '0x%x'", + vector); + vector = xsetbv_safe(0, supported_xcr0); __GUEST_ASSERT(!vector, "Expected success on XSETBV(0x%lx), got vector '0x%x'", -- cgit v1.2.3 From 3678c7f6114f6fc8614c7e9a249d60f8e1678bad Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:33 -0700 Subject: KVM: selftests: Drop manual CR4.OSXSAVE enabling from CR4/CPUID sync test Now that CR4.OSXSAVE is enabled by default, drop the manual enabling from CR4/CPUID sync test and instead assert that CR4.OSXSAVE is enabled. Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-8-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c index da818afb7031..28cc66454601 100644 --- a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c +++ b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c @@ -27,12 +27,9 @@ static void guest_code(void) [KVM_CPUID_EAX] = X86_FEATURE_OSXSAVE.function, [KVM_CPUID_ECX] = X86_FEATURE_OSXSAVE.index, }; - uint64_t cr4; - /* turn on CR4.OSXSAVE */ - cr4 = get_cr4(); - cr4 |= X86_CR4_OSXSAVE; - set_cr4(cr4); + /* CR4.OSXSAVE should be enabled by default (for selftests vCPUs). */ + GUEST_ASSERT(get_cr4() & X86_CR4_OSXSAVE); /* verify CR4.OSXSAVE == CPUID.OSXSAVE */ GUEST_ASSERT(this_cpu_has(X86_FEATURE_OSXSAVE)); -- cgit v1.2.3 From d87331890a38240d0743b7fb04c25d92b255ec46 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:34 -0700 Subject: KVM: selftests: Drop manual XCR0 configuration from AMX test Now that CR4.OSXSAVE and XCR0 are setup by default, drop the manual enabling of OXSAVE and XTILE from the AMX test. Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-9-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/amx_test.c | 23 ++++------------------- 1 file changed, 4 insertions(+), 19 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c index 903940c54d2d..f4ce5a185a7d 100644 --- a/tools/testing/selftests/kvm/x86_64/amx_test.c +++ b/tools/testing/selftests/kvm/x86_64/amx_test.c @@ -86,6 +86,8 @@ static inline void __xsavec(struct xstate *xstate, uint64_t rfbm) static void check_xtile_info(void) { + GUEST_ASSERT((xgetbv(0) & XFEATURE_MASK_XTILE) == XFEATURE_MASK_XTILE); + GUEST_ASSERT(this_cpu_has_p(X86_PROPERTY_XSTATE_MAX_SIZE_XCR0)); GUEST_ASSERT(this_cpu_property(X86_PROPERTY_XSTATE_MAX_SIZE_XCR0) <= XSAVE_SIZE); @@ -122,29 +124,12 @@ static void set_tilecfg(struct tile_config *cfg) } } -static void init_regs(void) -{ - uint64_t cr4, xcr0; - - GUEST_ASSERT(this_cpu_has(X86_FEATURE_XSAVE)); - - /* turn on CR4.OSXSAVE */ - cr4 = get_cr4(); - cr4 |= X86_CR4_OSXSAVE; - set_cr4(cr4); - GUEST_ASSERT(this_cpu_has(X86_FEATURE_OSXSAVE)); - - xcr0 = xgetbv(0); - xcr0 |= XFEATURE_MASK_XTILE; - xsetbv(0x0, xcr0); - GUEST_ASSERT((xgetbv(0) & XFEATURE_MASK_XTILE) == XFEATURE_MASK_XTILE); -} - static void __attribute__((__flatten__)) guest_code(struct tile_config *amx_cfg, struct tile_data *tiledata, struct xstate *xstate) { - init_regs(); + GUEST_ASSERT(this_cpu_has(X86_FEATURE_XSAVE) && + this_cpu_has(X86_FEATURE_OSXSAVE)); check_xtile_info(); GUEST_SYNC(1); -- cgit v1.2.3 From 28439090ece61e71c2c2b75c3567446e5aea7519 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:35 -0700 Subject: KVM: selftests: Drop manual XCR0 configuration from state test Now that CR4.OSXSAVE and XCR0 are setup by default, drop the manual enabling from the state test, which is fully redundant with the default behavior. Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-10-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/state_test.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/state_test.c b/tools/testing/selftests/kvm/x86_64/state_test.c index 1c756db329e5..141b7fc0c965 100644 --- a/tools/testing/selftests/kvm/x86_64/state_test.c +++ b/tools/testing/selftests/kvm/x86_64/state_test.c @@ -145,11 +145,6 @@ static void __attribute__((__flatten__)) guest_code(void *arg) memset(buffer, 0xcc, sizeof(buffer)); - set_cr4(get_cr4() | X86_CR4_OSXSAVE); - GUEST_ASSERT(this_cpu_has(X86_FEATURE_OSXSAVE)); - - xsetbv(0, xgetbv(0) | supported_xcr0); - /* * Modify state for all supported xfeatures to take them out of * their "init" state, i.e. to make them show up in XSTATE_BV. -- cgit v1.2.3 From 3c4c128d02ed81ddbf9b374a77bc0cb5a91e0a87 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:36 -0700 Subject: KVM: selftests: Drop manual XCR0 configuration from SEV smoke test Now that CR4.OSXSAVE and XCR0 are setup by default, drop the manual enabling from the SEV smoke test that validates FPU state can be transferred into the VMSA. In guest_code_xsave(), explicitly set the Requested-Feature Bitmask (RFBM) to exactly XFEATURE_MASK_X87_AVX instead of relying on the host side of things to enable only X87_AVX features in guest XCR0. I.e. match the RFBM for the host XSAVE. Link: https://lore.kernel.org/r/20241003234337.273364-11-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/sev_smoke_test.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c index 2e9197eb1652..965fc362dee3 100644 --- a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c +++ b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c @@ -41,8 +41,8 @@ static void guest_sev_code(void) /* Stash state passed via VMSA before any compiled code runs. */ extern void guest_code_xsave(void); asm("guest_code_xsave:\n" - "mov $-1, %eax\n" - "mov $-1, %edx\n" + "mov $" __stringify(XFEATURE_MASK_X87_AVX) ", %eax\n" + "xor %edx, %edx\n" "xsave (%rdi)\n" "jmp guest_sev_es_code"); @@ -70,12 +70,6 @@ static void test_sync_vmsa(uint32_t policy) double x87val = M_PI; struct kvm_xsave __attribute__((aligned(64))) xsave = { 0 }; - struct kvm_sregs sregs; - struct kvm_xcrs xcrs = { - .nr_xcrs = 1, - .xcrs[0].xcr = 0, - .xcrs[0].value = XFEATURE_MASK_X87_AVX, - }; vm = vm_sev_create_with_one_vcpu(KVM_X86_SEV_ES_VM, guest_code_xsave, &vcpu); gva = vm_vaddr_alloc_shared(vm, PAGE_SIZE, KVM_UTIL_MIN_VADDR, @@ -84,11 +78,6 @@ static void test_sync_vmsa(uint32_t policy) vcpu_args_set(vcpu, 1, gva); - vcpu_sregs_get(vcpu, &sregs); - sregs.cr4 |= X86_CR4_OSFXSR | X86_CR4_OSXSAVE; - vcpu_sregs_set(vcpu, &sregs); - - vcpu_xcrs_set(vcpu, &xcrs); asm("fninit\n" "vpcmpeqb %%ymm4, %%ymm4, %%ymm4\n" "fldl %3\n" -- cgit v1.2.3 From 89f8869835e4da836bc60ab20568b7864706f94b Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 3 Oct 2024 16:43:37 -0700 Subject: KVM: selftests: Ensure KVM supports AVX for SEV-ES VMSA FPU test Verify that KVM's supported XCR0 includes AVX (and earlier features) when running the SEV-ES VMSA XSAVE test. In practice, the issue will likely never pop up, since KVM support for AVX predates KVM support for SEV-ES, but checking for KVM support makes the requirement more obvious. Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241003234337.273364-12-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/sev_smoke_test.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c index 965fc362dee3..ae77698e6e97 100644 --- a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c +++ b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c @@ -181,6 +181,8 @@ static void test_sev_es_shutdown(void) int main(int argc, char *argv[]) { + const u64 xf_mask = XFEATURE_MASK_X87_AVX; + TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SEV)); test_sev(guest_sev_code, SEV_POLICY_NO_DBG); @@ -193,7 +195,7 @@ int main(int argc, char *argv[]) test_sev_es_shutdown(); if (kvm_has_cap(KVM_CAP_XCRS) && - (xgetbv(0) & XFEATURE_MASK_X87_AVX) == XFEATURE_MASK_X87_AVX) { + (xgetbv(0) & kvm_cpu_supported_xcr0() & xf_mask) == xf_mask) { test_sync_vmsa(0); test_sync_vmsa(SEV_POLICY_NO_DBG); } -- cgit v1.2.3 From 69c0d824779843b51ca2339b2163db4d3b40c54c Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 28 Oct 2024 20:22:31 +0000 Subject: kselftest/arm64: Fix encoding for SVE B16B16 test The test for SVE_B16B16 had a cut'n'paste of a SME instruction, fix it with a relevant SVE instruction. Fixes: 44d10c27bd75 ("kselftest/arm64: Add 2023 DPISA hwcap test coverage") Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241028-arm64-b16b16-test-v1-1-59a4a7449bdf@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/abi/hwcap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index 7e95ba5fd496..265654ec48b9 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -361,8 +361,8 @@ static void sveaes_sigill(void) static void sveb16b16_sigill(void) { - /* BFADD ZA.H[W0, 0], {Z0.H-Z1.H} */ - asm volatile(".inst 0xC1E41C00" : : : ); + /* BFADD Z0.H, Z0.H, Z0.H */ + asm volatile(".inst 0x65000000" : : : ); } static void svepmull_sigill(void) -- cgit v1.2.3 From e5e4799e2ac3619a10a9e6db7d2a51d7cc6a69ef Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 30 Oct 2024 15:28:19 -0700 Subject: selftests/bpf: Add a test for open coded kmem_cache iter The new subtest runs with bpf_prog_test_run_opts() as a syscall prog. It iterates the kmem_cache using bpf_for_each loop and count the number of entries. Finally it checks it with the number of entries from the regular iterator. $ ./vmtest.sh -- ./test_progs -t kmem_cache_iter ... #130/1 kmem_cache_iter/check_task_struct:OK #130/2 kmem_cache_iter/check_slabinfo:OK #130/3 kmem_cache_iter/open_coded_iter:OK #130 kmem_cache_iter:OK Summary: 1/3 PASSED, 0 SKIPPED, 0 FAILED Also simplify the code by using attach routine of the skeleton. Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20241030222819.1800667-2-namhyung@kernel.org Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/bpf_experimental.h | 6 ++++ .../selftests/bpf/prog_tests/kmem_cache_iter.c | 35 ++++++++++++++-------- .../testing/selftests/bpf/progs/kmem_cache_iter.c | 22 ++++++++++++++ 3 files changed, 51 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h index b0668f29f7b3..cd8ecd39c3f3 100644 --- a/tools/testing/selftests/bpf/bpf_experimental.h +++ b/tools/testing/selftests/bpf/bpf_experimental.h @@ -582,4 +582,10 @@ extern int bpf_wq_set_callback_impl(struct bpf_wq *wq, unsigned int flags__k, void *aux__ign) __ksym; #define bpf_wq_set_callback(timer, cb, flags) \ bpf_wq_set_callback_impl(timer, cb, flags, NULL) + +struct bpf_iter_kmem_cache; +extern int bpf_iter_kmem_cache_new(struct bpf_iter_kmem_cache *it) __weak __ksym; +extern struct kmem_cache *bpf_iter_kmem_cache_next(struct bpf_iter_kmem_cache *it) __weak __ksym; +extern void bpf_iter_kmem_cache_destroy(struct bpf_iter_kmem_cache *it) __weak __ksym; + #endif diff --git a/tools/testing/selftests/bpf/prog_tests/kmem_cache_iter.c b/tools/testing/selftests/bpf/prog_tests/kmem_cache_iter.c index 848d8fc9171f..8e13a3416a21 100644 --- a/tools/testing/selftests/bpf/prog_tests/kmem_cache_iter.c +++ b/tools/testing/selftests/bpf/prog_tests/kmem_cache_iter.c @@ -68,12 +68,27 @@ static void subtest_kmem_cache_iter_check_slabinfo(struct kmem_cache_iter *skel) fclose(fp); } +static void subtest_kmem_cache_iter_open_coded(struct kmem_cache_iter *skel) +{ + LIBBPF_OPTS(bpf_test_run_opts, topts); + int err, fd; + + /* No need to attach it, just run it directly */ + fd = bpf_program__fd(skel->progs.open_coded_iter); + + err = bpf_prog_test_run_opts(fd, &topts); + if (!ASSERT_OK(err, "test_run_opts err")) + return; + if (!ASSERT_OK(topts.retval, "test_run_opts retval")) + return; + + /* It should be same as we've seen from the explicit iterator */ + ASSERT_EQ(skel->bss->open_coded_seen, skel->bss->kmem_cache_seen, "open_code_seen_eq"); +} + void test_kmem_cache_iter(void) { - DECLARE_LIBBPF_OPTS(bpf_iter_attach_opts, opts); struct kmem_cache_iter *skel = NULL; - union bpf_iter_link_info linfo = {}; - struct bpf_link *link; char buf[256]; int iter_fd; @@ -81,16 +96,12 @@ void test_kmem_cache_iter(void) if (!ASSERT_OK_PTR(skel, "kmem_cache_iter__open_and_load")) return; - opts.link_info = &linfo; - opts.link_info_len = sizeof(linfo); - - link = bpf_program__attach_iter(skel->progs.slab_info_collector, &opts); - if (!ASSERT_OK_PTR(link, "attach_iter")) + if (!ASSERT_OK(kmem_cache_iter__attach(skel), "skel_attach")) goto destroy; - iter_fd = bpf_iter_create(bpf_link__fd(link)); + iter_fd = bpf_iter_create(bpf_link__fd(skel->links.slab_info_collector)); if (!ASSERT_GE(iter_fd, 0, "iter_create")) - goto free_link; + goto destroy; memset(buf, 0, sizeof(buf)); while (read(iter_fd, buf, sizeof(buf) > 0)) { @@ -105,11 +116,11 @@ void test_kmem_cache_iter(void) subtest_kmem_cache_iter_check_task_struct(skel); if (test__start_subtest("check_slabinfo")) subtest_kmem_cache_iter_check_slabinfo(skel); + if (test__start_subtest("open_coded_iter")) + subtest_kmem_cache_iter_open_coded(skel); close(iter_fd); -free_link: - bpf_link__destroy(link); destroy: kmem_cache_iter__destroy(skel); } diff --git a/tools/testing/selftests/bpf/progs/kmem_cache_iter.c b/tools/testing/selftests/bpf/progs/kmem_cache_iter.c index e775d5cd99fc..b9c8f9457492 100644 --- a/tools/testing/selftests/bpf/progs/kmem_cache_iter.c +++ b/tools/testing/selftests/bpf/progs/kmem_cache_iter.c @@ -3,6 +3,7 @@ #include #include #include +#include "bpf_experimental.h" char _license[] SEC("license") = "GPL"; @@ -32,6 +33,7 @@ extern struct kmem_cache *bpf_get_kmem_cache(u64 addr) __ksym; /* Result, will be checked by userspace */ int task_struct_found; int kmem_cache_seen; +int open_coded_seen; SEC("iter/kmem_cache") int slab_info_collector(struct bpf_iter__kmem_cache *ctx) @@ -84,3 +86,23 @@ int BPF_PROG(check_task_struct) task_struct_found = -2; return 0; } + +SEC("syscall") +int open_coded_iter(const void *ctx) +{ + struct kmem_cache *s; + + bpf_for_each(kmem_cache, s) { + struct kmem_cache_result *r; + + r = bpf_map_lookup_elem(&slab_result, &open_coded_seen); + if (!r) + break; + + if (r->obj_size != s->size) + break; + + open_coded_seen++; + } + return 0; +} -- cgit v1.2.3 From 4d99e509c161f8610de125202c648fa4acd00541 Mon Sep 17 00:00:00 2001 From: Leon Hwang Date: Thu, 31 Oct 2024 23:28:44 +0800 Subject: bpf, bpftool: Fix incorrect disasm pc This patch addresses the bpftool issue "Wrong callq address displayed"[0]. The issue stemmed from an incorrect program counter (PC) value used during disassembly with LLVM or libbfd. For LLVM: The PC argument must represent the actual address in the kernel to compute the correct relative address. For libbfd: The relative address can be adjusted by adding func_ksym within the custom info->print_address_func to yield the correct address. Links: [0] https://github.com/libbpf/bpftool/issues/109 Changes: v2 -> v3: * Address comment from Quentin: * Remove the typedef. v1 -> v2: * Fix the broken libbfd disassembler. Fixes: e1947c750ffe ("bpftool: Refactor disassembler for JIT-ed programs") Signed-off-by: Leon Hwang Signed-off-by: Andrii Nakryiko Tested-by: Quentin Monnet Reviewed-by: Quentin Monnet Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20241031152844.68817-1-leon.hwang@linux.dev --- tools/bpf/bpftool/jit_disasm.c | 40 +++++++++++++++++++++++++++++----------- 1 file changed, 29 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/bpf/bpftool/jit_disasm.c b/tools/bpf/bpftool/jit_disasm.c index 7b8d9ec89ebd..c032d2c6ab6d 100644 --- a/tools/bpf/bpftool/jit_disasm.c +++ b/tools/bpf/bpftool/jit_disasm.c @@ -80,7 +80,8 @@ symbol_lookup_callback(__maybe_unused void *disasm_info, static int init_context(disasm_ctx_t *ctx, const char *arch, __maybe_unused const char *disassembler_options, - __maybe_unused unsigned char *image, __maybe_unused ssize_t len) + __maybe_unused unsigned char *image, __maybe_unused ssize_t len, + __maybe_unused __u64 func_ksym) { char *triple; @@ -109,12 +110,13 @@ static void destroy_context(disasm_ctx_t *ctx) } static int -disassemble_insn(disasm_ctx_t *ctx, unsigned char *image, ssize_t len, int pc) +disassemble_insn(disasm_ctx_t *ctx, unsigned char *image, ssize_t len, int pc, + __u64 func_ksym) { char buf[256]; int count; - count = LLVMDisasmInstruction(*ctx, image + pc, len - pc, pc, + count = LLVMDisasmInstruction(*ctx, image + pc, len - pc, func_ksym + pc, buf, sizeof(buf)); if (json_output) printf_json(buf); @@ -136,8 +138,21 @@ int disasm_init(void) #ifdef HAVE_LIBBFD_SUPPORT #define DISASM_SPACER "\t" +struct disasm_info { + struct disassemble_info info; + __u64 func_ksym; +}; + +static void disasm_print_addr(bfd_vma addr, struct disassemble_info *info) +{ + struct disasm_info *dinfo = container_of(info, struct disasm_info, info); + + addr += dinfo->func_ksym; + generic_print_address(addr, info); +} + typedef struct { - struct disassemble_info *info; + struct disasm_info *info; disassembler_ftype disassemble; bfd *bfdf; } disasm_ctx_t; @@ -215,7 +230,7 @@ static int fprintf_json_styled(void *out, static int init_context(disasm_ctx_t *ctx, const char *arch, const char *disassembler_options, - unsigned char *image, ssize_t len) + unsigned char *image, ssize_t len, __u64 func_ksym) { struct disassemble_info *info; char tpath[PATH_MAX]; @@ -238,12 +253,13 @@ static int init_context(disasm_ctx_t *ctx, const char *arch, } bfdf = ctx->bfdf; - ctx->info = malloc(sizeof(struct disassemble_info)); + ctx->info = malloc(sizeof(struct disasm_info)); if (!ctx->info) { p_err("mem alloc failed"); goto err_close; } - info = ctx->info; + ctx->info->func_ksym = func_ksym; + info = &ctx->info->info; if (json_output) init_disassemble_info_compat(info, stdout, @@ -272,6 +288,7 @@ static int init_context(disasm_ctx_t *ctx, const char *arch, info->disassembler_options = disassembler_options; info->buffer = image; info->buffer_length = len; + info->print_address_func = disasm_print_addr; disassemble_init_for_target(info); @@ -304,9 +321,10 @@ static void destroy_context(disasm_ctx_t *ctx) static int disassemble_insn(disasm_ctx_t *ctx, __maybe_unused unsigned char *image, - __maybe_unused ssize_t len, int pc) + __maybe_unused ssize_t len, int pc, + __maybe_unused __u64 func_ksym) { - return ctx->disassemble(pc, ctx->info); + return ctx->disassemble(pc, &ctx->info->info); } int disasm_init(void) @@ -331,7 +349,7 @@ int disasm_print_insn(unsigned char *image, ssize_t len, int opcodes, if (!len) return -1; - if (init_context(&ctx, arch, disassembler_options, image, len)) + if (init_context(&ctx, arch, disassembler_options, image, len, func_ksym)) return -1; if (json_output) @@ -360,7 +378,7 @@ int disasm_print_insn(unsigned char *image, ssize_t len, int opcodes, printf("%4x:" DISASM_SPACER, pc); } - count = disassemble_insn(&ctx, image, len, pc); + count = disassemble_insn(&ctx, image, len, pc, func_ksym); if (json_output) { /* Operand array, was started in fprintf_json. Before -- cgit v1.2.3 From 0513eeee86d67930f3567e450357d8db1cfb4f16 Mon Sep 17 00:00:00 2001 From: Viktor Malik Date: Fri, 1 Nov 2024 09:27:12 +0100 Subject: bpftool: Prevent setting duplicate _GNU_SOURCE in Makefile When building selftests with CFLAGS set via env variable, the value of CFLAGS is propagated into bpftool Makefile (called from selftests Makefile). This makes the compilation fail as _GNU_SOURCE is defined two times - once from selftests Makefile (by including lib.mk) and once from bpftool Makefile (by calling `llvm-config --cflags`): $ CFLAGS="" make -C tools/testing/selftests/bpf [...] CC /bpf-next/tools/testing/selftests/bpf/tools/build/bpftool/btf.o : error: "_GNU_SOURCE" redefined [-Werror] : note: this is the location of the previous definition cc1: all warnings being treated as errors [...] Filter out -D_GNU_SOURCE from the result of `llvm-config --cflags` in bpftool Makefile to prevent this error. Signed-off-by: Viktor Malik Signed-off-by: Andrii Nakryiko Acked-by: Quentin Monnet Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/acec3108b62d4df1436cda777e58e93e033ac7a7.1730449390.git.vmalik@redhat.com --- tools/bpf/bpftool/Makefile | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile index ba927379eb20..a4263dfb5e03 100644 --- a/tools/bpf/bpftool/Makefile +++ b/tools/bpf/bpftool/Makefile @@ -147,7 +147,11 @@ ifeq ($(feature-llvm),1) # If LLVM is available, use it for JIT disassembly CFLAGS += -DHAVE_LLVM_SUPPORT LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets - CFLAGS += $(shell $(LLVM_CONFIG) --cflags) + # llvm-config always adds -D_GNU_SOURCE, however, it may already be in CFLAGS + # (e.g. when bpftool build is called from selftests build as selftests + # Makefile includes lib.mk which sets -D_GNU_SOURCE) which would cause + # compilation error due to redefinition. Let's filter it out here. + CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags)) LIBS += $(shell $(LLVM_CONFIG) --libs $(LLVM_CONFIG_LIB_COMPONENTS)) ifeq ($(shell $(LLVM_CONFIG) --shared-mode),static) LIBS += $(shell $(LLVM_CONFIG) --system-libs $(LLVM_CONFIG_LIB_COMPONENTS)) -- cgit v1.2.3 From 77017b9c46820d72596e50a3986bd0734c1340a9 Mon Sep 17 00:00:00 2001 From: Viktor Malik Date: Fri, 1 Nov 2024 09:27:13 +0100 Subject: selftests/bpf: Disable warnings on unused flags for Clang builds There exist compiler flags supported by GCC but not supported by Clang (e.g. -specs=...). Currently, these cannot be passed to BPF selftests builds, even when building with GCC, as some binaries (urandom_read and liburandom_read.so) are always built with Clang and the unsupported flags make the compilation fail (as -Werror is turned on). Add -Wno-unused-command-line-argument to these rules to suppress such errors. This allows to do things like: $ CFLAGS="-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1" \ make -C tools/testing/selftests/bpf Without this patch, the compilation would fail with: [...] clang: error: argument unused during compilation: '-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1' [-Werror,-Wunused-command-line-argument] make: *** [Makefile:273: /bpf-next/tools/testing/selftests/bpf/liburandom_read.so] Error 1 [...] Signed-off-by: Viktor Malik Signed-off-by: Andrii Nakryiko Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/2d349e9d5eb0a79dd9ff94b496769d64e6ff7654.1730449390.git.vmalik@redhat.com --- tools/testing/selftests/bpf/Makefile | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index a226d0647c4e..d5aaa674dab5 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -274,6 +274,7 @@ $(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \ + -Wno-unused-command-line-argument \ -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ -Wl,--version-script=liburandom_read.map \ -fPIC -shared -o $@ @@ -282,6 +283,7 @@ $(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_r $(call msg,BINARY,,$@) $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ + -Wno-unused-command-line-argument \ -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ -Wl,-rpath=. -o $@ -- cgit v1.2.3 From 07dc3a6de33098b0dd2ab73ef43fe721abed4825 Mon Sep 17 00:00:00 2001 From: Tengda Wu Date: Mon, 21 Oct 2024 11:02:00 +0000 Subject: perf stat: Support inherit events during fork() for bperf bperf has a nice ability to share PMUs, but it still does not support inherit events during fork(), resulting in some deviations in its stat results compared with perf. perf stat result: $ ./perf stat -e cycles,instructions -- ./perf test -w sqrtloop Performance counter stats for './perf test -w sqrtloop': 2,316,038,116 cycles 2,859,350,725 instructions 1.009603637 seconds time elapsed 1.004196000 seconds user 0.003950000 seconds sys bperf stat result: $ ./perf stat --bpf-counters -e cycles,instructions -- \ ./perf test -w sqrtloop Performance counter stats for './perf test -w sqrtloop': 18,762,093 cycles 23,487,766 instructions 1.008913769 seconds time elapsed 1.003248000 seconds user 0.004069000 seconds sys In order to support event inheritance, two new bpf programs are added to monitor the fork and exit of tasks respectively. When a task is created, add it to the filter map to enable counting, and reuse the `accum_key` of its parent task to count together with the parent task. When a task exits, remove it from the filter map to disable counting. After support: $ ./perf stat --bpf-counters -e cycles,instructions -- \ ./perf test -w sqrtloop Performance counter stats for './perf test -w sqrtloop': 2,316,252,189 cycles 2,859,946,547 instructions 1.009422314 seconds time elapsed 1.003597000 seconds user 0.004270000 seconds sys Signed-off-by: Tengda Wu Cc: song@kernel.org Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20241021110201.325617-2-wutengda@huaweicloud.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-stat.c | 1 + tools/perf/util/bpf_counter.c | 35 ++++++++-- tools/perf/util/bpf_skel/bperf_follower.bpf.c | 98 +++++++++++++++++++++++++-- tools/perf/util/bpf_skel/bperf_u.h | 5 ++ tools/perf/util/target.h | 1 + 5 files changed, 126 insertions(+), 14 deletions(-) (limited to 'tools') diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index c12158d99353..fdf5172646a5 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2641,6 +2641,7 @@ int cmd_stat(int argc, const char **argv) } else if (big_num_opt == 0) /* User passed --no-big-num */ stat_config.big_num = false; + target.inherit = !stat_config.no_inherit; err = target__validate(&target); if (err) { target__strerror(&target, err, errbuf, BUFSIZ); diff --git a/tools/perf/util/bpf_counter.c b/tools/perf/util/bpf_counter.c index 7a8af60e0f51..73fcafbffc6a 100644 --- a/tools/perf/util/bpf_counter.c +++ b/tools/perf/util/bpf_counter.c @@ -394,6 +394,7 @@ static int bperf_check_target(struct evsel *evsel, } static struct perf_cpu_map *all_cpu_map; +static __u32 filter_entry_cnt; static int bperf_reload_leader_program(struct evsel *evsel, int attr_map_fd, struct perf_event_attr_map_entry *entry) @@ -444,12 +445,32 @@ out: return err; } +static int bperf_attach_follower_program(struct bperf_follower_bpf *skel, + enum bperf_filter_type filter_type, + bool inherit) +{ + struct bpf_link *link; + int err = 0; + + if ((filter_type == BPERF_FILTER_PID || + filter_type == BPERF_FILTER_TGID) && inherit) + /* attach all follower bpf progs to enable event inheritance */ + err = bperf_follower_bpf__attach(skel); + else { + link = bpf_program__attach(skel->progs.fexit_XXX); + if (IS_ERR(link)) + err = PTR_ERR(link); + } + + return err; +} + static int bperf__load(struct evsel *evsel, struct target *target) { struct perf_event_attr_map_entry entry = {0xffffffff, 0xffffffff}; int attr_map_fd, diff_map_fd = -1, err; enum bperf_filter_type filter_type; - __u32 filter_entry_cnt, i; + __u32 i; if (bperf_check_target(evsel, target, &filter_type, &filter_entry_cnt)) return -1; @@ -529,9 +550,6 @@ static int bperf__load(struct evsel *evsel, struct target *target) /* set up reading map */ bpf_map__set_max_entries(evsel->follower_skel->maps.accum_readings, filter_entry_cnt); - /* set up follower filter based on target */ - bpf_map__set_max_entries(evsel->follower_skel->maps.filter, - filter_entry_cnt); err = bperf_follower_bpf__load(evsel->follower_skel); if (err) { pr_err("Failed to load follower skeleton\n"); @@ -543,6 +561,7 @@ static int bperf__load(struct evsel *evsel, struct target *target) for (i = 0; i < filter_entry_cnt; i++) { int filter_map_fd; __u32 key; + struct bperf_filter_value fval = { i, 0 }; if (filter_type == BPERF_FILTER_PID || filter_type == BPERF_FILTER_TGID) @@ -553,12 +572,14 @@ static int bperf__load(struct evsel *evsel, struct target *target) break; filter_map_fd = bpf_map__fd(evsel->follower_skel->maps.filter); - bpf_map_update_elem(filter_map_fd, &key, &i, BPF_ANY); + bpf_map_update_elem(filter_map_fd, &key, &fval, BPF_ANY); } evsel->follower_skel->bss->type = filter_type; + evsel->follower_skel->bss->inherit = target->inherit; - err = bperf_follower_bpf__attach(evsel->follower_skel); + err = bperf_attach_follower_program(evsel->follower_skel, filter_type, + target->inherit); out: if (err && evsel->bperf_leader_link_fd >= 0) @@ -623,7 +644,7 @@ static int bperf__read(struct evsel *evsel) bperf_sync_counters(evsel); reading_map_fd = bpf_map__fd(skel->maps.accum_readings); - for (i = 0; i < bpf_map__max_entries(skel->maps.accum_readings); i++) { + for (i = 0; i < filter_entry_cnt; i++) { struct perf_cpu entry; __u32 cpu; diff --git a/tools/perf/util/bpf_skel/bperf_follower.bpf.c b/tools/perf/util/bpf_skel/bperf_follower.bpf.c index f193998530d4..0595063139a3 100644 --- a/tools/perf/util/bpf_skel/bperf_follower.bpf.c +++ b/tools/perf/util/bpf_skel/bperf_follower.bpf.c @@ -5,6 +5,8 @@ #include #include "bperf_u.h" +#define MAX_ENTRIES 102400 + struct { __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); __uint(key_size, sizeof(__u32)); @@ -22,25 +24,29 @@ struct { struct { __uint(type, BPF_MAP_TYPE_HASH); __uint(key_size, sizeof(__u32)); - __uint(value_size, sizeof(__u32)); + __uint(value_size, sizeof(struct bperf_filter_value)); + __uint(max_entries, MAX_ENTRIES); + __uint(map_flags, BPF_F_NO_PREALLOC); } filter SEC(".maps"); enum bperf_filter_type type = 0; int enabled = 0; +int inherit; SEC("fexit/XXX") int BPF_PROG(fexit_XXX) { struct bpf_perf_event_value *diff_val, *accum_val; __u32 filter_key, zero = 0; - __u32 *accum_key; + __u32 accum_key; + struct bperf_filter_value *fval; if (!enabled) return 0; switch (type) { case BPERF_FILTER_GLOBAL: - accum_key = &zero; + accum_key = zero; goto do_add; case BPERF_FILTER_CPU: filter_key = bpf_get_smp_processor_id(); @@ -49,22 +55,34 @@ int BPF_PROG(fexit_XXX) filter_key = bpf_get_current_pid_tgid() & 0xffffffff; break; case BPERF_FILTER_TGID: - filter_key = bpf_get_current_pid_tgid() >> 32; + /* Use pid as the filter_key to exclude new task counts + * when inherit is disabled. Don't worry about the existing + * children in TGID losing their counts, bpf_counter has + * already added them to the filter map via perf_thread_map + * before this bpf prog runs. + */ + filter_key = inherit ? + bpf_get_current_pid_tgid() >> 32 : + bpf_get_current_pid_tgid() & 0xffffffff; break; default: return 0; } - accum_key = bpf_map_lookup_elem(&filter, &filter_key); - if (!accum_key) + fval = bpf_map_lookup_elem(&filter, &filter_key); + if (!fval) return 0; + accum_key = fval->accum_key; + if (fval->exited) + bpf_map_delete_elem(&filter, &filter_key); + do_add: diff_val = bpf_map_lookup_elem(&diff_readings, &zero); if (!diff_val) return 0; - accum_val = bpf_map_lookup_elem(&accum_readings, accum_key); + accum_val = bpf_map_lookup_elem(&accum_readings, &accum_key); if (!accum_val) return 0; @@ -75,4 +93,70 @@ do_add: return 0; } +/* The program is only used for PID or TGID filter types. */ +SEC("tp_btf/task_newtask") +int BPF_PROG(on_newtask, struct task_struct *task, __u64 clone_flags) +{ + __u32 parent_key, child_key; + struct bperf_filter_value *parent_fval; + struct bperf_filter_value child_fval = { 0 }; + + if (!enabled) + return 0; + + switch (type) { + case BPERF_FILTER_PID: + parent_key = bpf_get_current_pid_tgid() & 0xffffffff; + child_key = task->pid; + break; + case BPERF_FILTER_TGID: + parent_key = bpf_get_current_pid_tgid() >> 32; + child_key = task->tgid; + if (child_key == parent_key) + return 0; + break; + default: + return 0; + } + + /* Check if the current task is one of the target tasks to be counted */ + parent_fval = bpf_map_lookup_elem(&filter, &parent_key); + if (!parent_fval) + return 0; + + /* Start counting for the new task by adding it into filter map, + * inherit the accum key of its parent task so that they can be + * counted together. + */ + child_fval.accum_key = parent_fval->accum_key; + child_fval.exited = 0; + bpf_map_update_elem(&filter, &child_key, &child_fval, BPF_NOEXIST); + + return 0; +} + +/* The program is only used for PID or TGID filter types. */ +SEC("tp_btf/sched_process_exit") +int BPF_PROG(on_exittask, struct task_struct *task) +{ + __u32 pid; + struct bperf_filter_value *fval; + + if (!enabled) + return 0; + + /* Stop counting for this task by removing it from filter map. + * For TGID type, if the pid can be found in the map, it means that + * this pid belongs to the leader task. After the task exits, the + * tgid of its child tasks (if any) will be 1, so the pid can be + * safely removed. + */ + pid = task->pid; + fval = bpf_map_lookup_elem(&filter, &pid); + if (fval) + fval->exited = 1; + + return 0; +} + char LICENSE[] SEC("license") = "Dual BSD/GPL"; diff --git a/tools/perf/util/bpf_skel/bperf_u.h b/tools/perf/util/bpf_skel/bperf_u.h index 1ce0c2c905c1..4a4a753980be 100644 --- a/tools/perf/util/bpf_skel/bperf_u.h +++ b/tools/perf/util/bpf_skel/bperf_u.h @@ -11,4 +11,9 @@ enum bperf_filter_type { BPERF_FILTER_TGID, }; +struct bperf_filter_value { + __u32 accum_key; + __u8 exited; +}; + #endif /* __BPERF_STAT_U_H */ diff --git a/tools/perf/util/target.h b/tools/perf/util/target.h index d582cae8e105..2ee2cc30340f 100644 --- a/tools/perf/util/target.h +++ b/tools/perf/util/target.h @@ -17,6 +17,7 @@ struct target { bool default_per_cpu; bool per_thread; bool use_bpf; + bool inherit; int initial_delay; const char *attr_map; }; -- cgit v1.2.3 From d36e5b36a2928b30e09ff59ce5ce2d5df935176e Mon Sep 17 00:00:00 2001 From: Tengda Wu Date: Mon, 21 Oct 2024 11:02:01 +0000 Subject: perf test: Use sqrtloop workload to test bperf event Replace `brstack` workload with `sqrtloop` workload, because `sqrtloop` workload contains fork(), which is suitable for testing the bperf event inheritance feature. Signed-off-by: Tengda Wu Cc: song@kernel.org Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20241021110201.325617-3-wutengda@huaweicloud.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/stat_bpf_counters.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/stat_bpf_counters.sh b/tools/perf/tests/shell/stat_bpf_counters.sh index a038c1b1a706..95d2ad5d17c6 100755 --- a/tools/perf/tests/shell/stat_bpf_counters.sh +++ b/tools/perf/tests/shell/stat_bpf_counters.sh @@ -4,7 +4,7 @@ set -e -workload="perf test -w brstack" +workload="perf test -w sqrtloop" # check whether $2 is within +/- 20% of $1 compare_number() -- cgit v1.2.3 From d44d26987bb3df6d76556827097fc9ce17565cb8 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 31 Oct 2024 13:04:07 +0100 Subject: timekeeping: Remove CONFIG_DEBUG_TIMEKEEPING Since 135225a363ae timekeeping_cycles_to_ns() handles large offsets which would lead to 64bit multiplication overflows correctly. It's also protected against negative motion of the clocksource unconditionally, which was exclusive to x86 before. timekeeping_advance() handles large offsets already correctly. That means the value of CONFIG_DEBUG_TIMEKEEPING which analyzed these cases is very close to zero. Remove all of it. Signed-off-by: Thomas Gleixner Acked-by: John Stultz Link: https://lore.kernel.org/all/20241031120328.536010148@linutronix.de --- tools/testing/selftests/wireguard/qemu/debug.config | 1 - 1 file changed, 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/wireguard/qemu/debug.config b/tools/testing/selftests/wireguard/qemu/debug.config index 9d172210e2c6..139fd9aa8b12 100644 --- a/tools/testing/selftests/wireguard/qemu/debug.config +++ b/tools/testing/selftests/wireguard/qemu/debug.config @@ -31,7 +31,6 @@ CONFIG_SCHED_DEBUG=y CONFIG_SCHED_INFO=y CONFIG_SCHEDSTATS=y CONFIG_SCHED_STACK_END_CHECK=y -CONFIG_DEBUG_TIMEKEEPING=y CONFIG_DEBUG_PREEMPT=y CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_SPINLOCK=y -- cgit v1.2.3 From d051cd72dcb769c842494b1dbe29067aba45474f Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Tue, 29 Oct 2024 02:00:28 -0700 Subject: net: netconsole: selftests: Change the IP subnet Use a less populated IP range to run the tests, as suggested by Petr in Link: https://lore.kernel.org/netdev/87ikvukv3s.fsf@nvidia.com/. Suggested-by: Petr Machata Signed-off-by: Breno Leitao Link: https://patch.msgid.link/20241029090030.1793551-2-leitao@debian.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/drivers/net/netcons_basic.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/netcons_basic.sh b/tools/testing/selftests/drivers/net/netcons_basic.sh index 06021b2059b7..8d28e5189e91 100755 --- a/tools/testing/selftests/drivers/net/netcons_basic.sh +++ b/tools/testing/selftests/drivers/net/netcons_basic.sh @@ -20,9 +20,9 @@ SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") # Simple script to test dynamic targets in netconsole SRCIF="" # to be populated later -SRCIP=192.168.1.1 +SRCIP=192.0.2.1 DSTIF="" # to be populated later -DSTIP=192.168.1.2 +DSTIP=192.0.2.2 PORT="6666" MSG="netconsole selftest" -- cgit v1.2.3 From afa4ceb0fb648655c9f04921ccc801feb034109c Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Tue, 29 Oct 2024 02:00:29 -0700 Subject: net: netconsole: selftests: Add userdata validation Extend netcons_basic selftest to verify the userdata functionality by: 1. Creating a test key in the userdata configfs directory 2. Writing a known value to the key 3. Validating the key-value pair appears in the captured network output This ensures the userdata feature is properly tested during selftests. Signed-off-by: Breno Leitao Link: https://patch.msgid.link/20241029090030.1793551-3-leitao@debian.org Signed-off-by: Jakub Kicinski --- .../testing/selftests/drivers/net/netcons_basic.sh | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/drivers/net/netcons_basic.sh b/tools/testing/selftests/drivers/net/netcons_basic.sh index 8d28e5189e91..182eb1a97e59 100755 --- a/tools/testing/selftests/drivers/net/netcons_basic.sh +++ b/tools/testing/selftests/drivers/net/netcons_basic.sh @@ -26,10 +26,13 @@ DSTIP=192.0.2.2 PORT="6666" MSG="netconsole selftest" +USERDATA_KEY="key" +USERDATA_VALUE="value" TARGET=$(mktemp -u netcons_XXXXX) DEFAULT_PRINTK_VALUES=$(cat /proc/sys/kernel/printk) NETCONS_CONFIGFS="/sys/kernel/config/netconsole" NETCONS_PATH="${NETCONS_CONFIGFS}"/"${TARGET}" +KEY_PATH="${NETCONS_PATH}/userdata/${USERDATA_KEY}" # NAMESPACE will be populated by setup_ns with a random value NAMESPACE="" @@ -122,6 +125,8 @@ function cleanup() { # delete netconsole dynamic reconfiguration echo 0 > "${NETCONS_PATH}"/enabled + # Remove key + rmdir "${KEY_PATH}" # Remove the configfs entry rmdir "${NETCONS_PATH}" @@ -136,6 +141,18 @@ function cleanup() { echo "${DEFAULT_PRINTK_VALUES}" > /proc/sys/kernel/printk } +function set_user_data() { + if [[ ! -d "${NETCONS_PATH}""/userdata" ]] + then + echo "Userdata path not available in ${NETCONS_PATH}/userdata" + exit "${ksft_skip}" + fi + + mkdir -p "${KEY_PATH}" + VALUE_PATH="${KEY_PATH}""/value" + echo "${USERDATA_VALUE}" > "${VALUE_PATH}" +} + function listen_port_and_save_to() { local OUTPUT=${1} # Just wait for 2 seconds @@ -146,6 +163,10 @@ function listen_port_and_save_to() { function validate_result() { local TMPFILENAME="$1" + # TMPFILENAME will contain something like: + # 6.11.1-0_fbk0_rc13_509_g30d75cea12f7,13,1822,115075213798,-;netconsole selftest: netcons_gtJHM + # key=value + # Check if the file exists if [ ! -f "$TMPFILENAME" ]; then echo "FAIL: File was not generated." >&2 @@ -158,6 +179,12 @@ function validate_result() { exit "${ksft_fail}" fi + if ! grep -q "${USERDATA_KEY}=${USERDATA_VALUE}" "${TMPFILENAME}"; then + echo "FAIL: ${USERDATA_KEY}=${USERDATA_VALUE} not found in ${TMPFILENAME}" >&2 + cat "${TMPFILENAME}" >&2 + exit "${ksft_fail}" + fi + # Delete the file once it is validated, otherwise keep it # for debugging purposes rm "${TMPFILENAME}" @@ -220,6 +247,8 @@ trap cleanup EXIT set_network # Create a dynamic target for netconsole create_dynamic_target +# Set userdata "key" with the "value" value +set_user_data # Listed for netconsole port inside the namespace and destination interface listen_port_and_save_to "${OUTPUT_FILE}" & # Wait for socat to start and listen to the port. -- cgit v1.2.3 From 9d2fe9cd02ca5f1e70a7eff0262fb3668a27db0c Mon Sep 17 00:00:00 2001 From: Ricardo Ribalda Date: Fri, 1 Nov 2024 07:46:29 +0000 Subject: iio: Add channel type for attention Add a new channel type representing if the user's attention state to the the system. This usually means if the user is looking at the screen or not. Signed-off-by: Ricardo Ribalda Link: https://patch.msgid.link/20241101-hpd-v3-3-e9c80b7c7164@chromium.org Signed-off-by: Jonathan Cameron --- tools/iio/iio_event_monitor.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c index d0b8e484826d..cccf62ea2b8f 100644 --- a/tools/iio/iio_event_monitor.c +++ b/tools/iio/iio_event_monitor.c @@ -63,6 +63,7 @@ static const char * const iio_chan_type_name_spec[] = { [IIO_DELTA_VELOCITY] = "deltavelocity", [IIO_COLORTEMP] = "colortemp", [IIO_CHROMATICITY] = "chromaticity", + [IIO_ATTENTION] = "attention", }; static const char * const iio_ev_type_text[] = { @@ -183,6 +184,7 @@ static bool event_is_known(struct iio_event_data *event) case IIO_DELTA_VELOCITY: case IIO_COLORTEMP: case IIO_CHROMATICITY: + case IIO_ATTENTION: break; default: return false; -- cgit v1.2.3 From 9ff75a23dff3622451057b2ccd88c19bbb293841 Mon Sep 17 00:00:00 2001 From: Pedro Tammela Date: Fri, 1 Nov 2024 11:31:48 -0300 Subject: selftests/tc-testing: add tests for qdisc_tree_reduce_backlog Add 3 tests to check for the expected behaviour of qdisc_tree_reduce_backlog in special scenarios. - The first test checks if the qdisc class is notified of deletion for major handle 'ffff:'. - The second test checks the same as the first test but with 'ffff:' as the root qdisc. - The third test checks if everything works if ingress is active. Acked-by: Jamal Hadi Salim Signed-off-by: Pedro Tammela Acked-by: Cong Wang Link: https://patch.msgid.link/20241101143148.1218890-1-pctammela@mojatatu.com Signed-off-by: Jakub Kicinski --- .../tc-testing/tc-tests/infra/qdiscs.json | 98 ++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json (limited to 'tools') diff --git a/tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json b/tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json new file mode 100644 index 000000000000..d3dd65b05b5f --- /dev/null +++ b/tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json @@ -0,0 +1,98 @@ +[ + { + "id": "ca5e", + "name": "Check class delete notification for ffff:", + "category": [ + "qdisc" + ], + "plugins": { + "requires": "nsPlugin" + }, + "setup": [ + "$IP link set dev $DUMMY up || true", + "$IP addr add 10.10.10.10/24 dev $DUMMY || true", + "$TC qdisc add dev $DUMMY root handle 1: drr", + "$TC filter add dev $DUMMY parent 1: basic classid 1:1", + "$TC class add dev $DUMMY parent 1: classid 1:1 drr", + "$TC qdisc add dev $DUMMY parent 1:1 handle ffff: drr", + "$TC filter add dev $DUMMY parent ffff: basic classid ffff:1", + "$TC class add dev $DUMMY parent ffff: classid ffff:1 drr", + "$TC qdisc add dev $DUMMY parent ffff:1 netem delay 1s", + "ping -c1 -W0.01 -I $DUMMY 10.10.10.1 || true", + "$TC class del dev $DUMMY classid ffff:1", + "$TC class add dev $DUMMY parent ffff: classid ffff:1 drr" + ], + "cmdUnderTest": "ping -c1 -W0.01 -I $DUMMY 10.10.10.1", + "expExitCode": "1", + "verifyCmd": "$TC -s qdisc ls dev $DUMMY", + "matchPattern": "drr 1: root", + "matchCount": "1", + "teardown": [ + "$TC qdisc del dev $DUMMY root handle 1: drr", + "$IP addr del 10.10.10.10/24 dev $DUMMY" + ] + }, + { + "id": "e4b7", + "name": "Check class delete notification for root ffff:", + "category": [ + "qdisc" + ], + "plugins": { + "requires": "nsPlugin" + }, + "setup": [ + "$IP link set dev $DUMMY up || true", + "$IP addr add 10.10.10.10/24 dev $DUMMY || true", + "$TC qdisc add dev $DUMMY root handle ffff: drr", + "$TC filter add dev $DUMMY parent ffff: basic classid ffff:1", + "$TC class add dev $DUMMY parent ffff: classid ffff:1 drr", + "$TC qdisc add dev $DUMMY parent ffff:1 netem delay 1s", + "ping -c1 -W0.01 -I $DUMMY 10.10.10.1 || true", + "$TC class del dev $DUMMY classid ffff:1", + "$TC class add dev $DUMMY parent ffff: classid ffff:1 drr" + ], + "cmdUnderTest": "ping -c1 -W0.01 -I $DUMMY 10.10.10.1", + "expExitCode": "1", + "verifyCmd": "$TC qdisc ls dev $DUMMY", + "matchPattern": "drr ffff: root", + "matchCount": "1", + "teardown": [ + "$TC qdisc del dev $DUMMY root handle ffff: drr", + "$IP addr del 10.10.10.10/24 dev $DUMMY" + ] + }, + { + "id": "33a9", + "name": "Check ingress is not searchable on backlog update", + "category": [ + "qdisc" + ], + "plugins": { + "requires": "nsPlugin" + }, + "setup": [ + "$IP link set dev $DUMMY up || true", + "$IP addr add 10.10.10.10/24 dev $DUMMY || true", + "$TC qdisc add dev $DUMMY ingress", + "$TC qdisc add dev $DUMMY root handle 1: drr", + "$TC filter add dev $DUMMY parent 1: basic classid 1:1", + "$TC class add dev $DUMMY parent 1: classid 1:1 drr", + "$TC qdisc add dev $DUMMY parent 1:1 handle 2: drr", + "$TC filter add dev $DUMMY parent 2: basic classid 2:1", + "$TC class add dev $DUMMY parent 2: classid 2:1 drr", + "$TC qdisc add dev $DUMMY parent 2:1 netem delay 1s", + "ping -c1 -W0.01 -I $DUMMY 10.10.10.1 || true" + ], + "cmdUnderTest": "$TC class del dev $DUMMY classid 2:1", + "expExitCode": "0", + "verifyCmd": "$TC qdisc ls dev $DUMMY", + "matchPattern": "drr 1: root", + "matchCount": "1", + "teardown": [ + "$TC qdisc del dev $DUMMY root handle 1: drr", + "$TC qdisc del dev $DUMMY ingress", + "$IP addr del 10.10.10.10/24 dev $DUMMY" + ] + } +] -- cgit v1.2.3 From d402755ced2ea8fc1f0513136f074002d509bfa0 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Sun, 3 Nov 2024 14:59:39 -0800 Subject: bpf: Unify resource leak checks There are similar checks for covering locks, references, RCU read sections and preempt_disable sections in 3 places in the verifer, i.e. for tail calls, bpf_ld_[abs, ind], and exit path (for BPF_EXIT and bpf_throw). Unify all of these into a common check_resource_leak function to avoid code duplication. Also update the error strings in selftests to the new ones in the same change to ensure clean bisection. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20241103225940.1408302-3-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/progs/exceptions_fail.c | 4 ++-- tools/testing/selftests/bpf/progs/preempt_lock.c | 14 +++++++------- tools/testing/selftests/bpf/progs/verifier_ref_tracking.c | 4 ++-- tools/testing/selftests/bpf/progs/verifier_spin_lock.c | 2 +- 4 files changed, 12 insertions(+), 12 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/exceptions_fail.c b/tools/testing/selftests/bpf/progs/exceptions_fail.c index 9cceb6521143..fe0f3fa5aab6 100644 --- a/tools/testing/selftests/bpf/progs/exceptions_fail.c +++ b/tools/testing/selftests/bpf/progs/exceptions_fail.c @@ -131,7 +131,7 @@ int reject_subprog_with_lock(void *ctx) } SEC("?tc") -__failure __msg("bpf_rcu_read_unlock is missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_rcu_read_lock-ed region") int reject_with_rcu_read_lock(void *ctx) { bpf_rcu_read_lock(); @@ -147,7 +147,7 @@ __noinline static int throwing_subprog(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("bpf_rcu_read_unlock is missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_rcu_read_lock-ed region") int reject_subprog_with_rcu_read_lock(void *ctx) { bpf_rcu_read_lock(); diff --git a/tools/testing/selftests/bpf/progs/preempt_lock.c b/tools/testing/selftests/bpf/progs/preempt_lock.c index 672fc368d9c4..885377e83607 100644 --- a/tools/testing/selftests/bpf/progs/preempt_lock.c +++ b/tools/testing/selftests/bpf/progs/preempt_lock.c @@ -6,7 +6,7 @@ #include "bpf_experimental.h" SEC("?tc") -__failure __msg("1 bpf_preempt_enable is missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_1(struct __sk_buff *ctx) { bpf_preempt_disable(); @@ -14,7 +14,7 @@ int preempt_lock_missing_1(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("2 bpf_preempt_enable(s) are missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_2(struct __sk_buff *ctx) { bpf_preempt_disable(); @@ -23,7 +23,7 @@ int preempt_lock_missing_2(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("3 bpf_preempt_enable(s) are missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_3(struct __sk_buff *ctx) { bpf_preempt_disable(); @@ -33,7 +33,7 @@ int preempt_lock_missing_3(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("1 bpf_preempt_enable is missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_3_minus_2(struct __sk_buff *ctx) { bpf_preempt_disable(); @@ -55,7 +55,7 @@ static __noinline void preempt_enable(void) } SEC("?tc") -__failure __msg("1 bpf_preempt_enable is missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_1_subprog(struct __sk_buff *ctx) { preempt_disable(); @@ -63,7 +63,7 @@ int preempt_lock_missing_1_subprog(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("2 bpf_preempt_enable(s) are missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_2_subprog(struct __sk_buff *ctx) { preempt_disable(); @@ -72,7 +72,7 @@ int preempt_lock_missing_2_subprog(struct __sk_buff *ctx) } SEC("?tc") -__failure __msg("1 bpf_preempt_enable is missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_preempt_disable-ed region") int preempt_lock_missing_2_minus_1_subprog(struct __sk_buff *ctx) { preempt_disable(); diff --git a/tools/testing/selftests/bpf/progs/verifier_ref_tracking.c b/tools/testing/selftests/bpf/progs/verifier_ref_tracking.c index c4c6da21265e..683a882b3e6d 100644 --- a/tools/testing/selftests/bpf/progs/verifier_ref_tracking.c +++ b/tools/testing/selftests/bpf/progs/verifier_ref_tracking.c @@ -791,7 +791,7 @@ l0_%=: r0 = *(u8*)skb[0]; \ SEC("tc") __description("reference tracking: forbid LD_ABS while holding reference") -__failure __msg("BPF_LD_[ABS|IND] cannot be mixed with socket references") +__failure __msg("BPF_LD_[ABS|IND] would lead to reference leak") __naked void ld_abs_while_holding_reference(void) { asm volatile (" \ @@ -836,7 +836,7 @@ l0_%=: r7 = 1; \ SEC("tc") __description("reference tracking: forbid LD_IND while holding reference") -__failure __msg("BPF_LD_[ABS|IND] cannot be mixed with socket references") +__failure __msg("BPF_LD_[ABS|IND] would lead to reference leak") __naked void ld_ind_while_holding_reference(void) { asm volatile (" \ diff --git a/tools/testing/selftests/bpf/progs/verifier_spin_lock.c b/tools/testing/selftests/bpf/progs/verifier_spin_lock.c index fb316c080c84..3f679de73229 100644 --- a/tools/testing/selftests/bpf/progs/verifier_spin_lock.c +++ b/tools/testing/selftests/bpf/progs/verifier_spin_lock.c @@ -187,7 +187,7 @@ l0_%=: r6 = r0; \ SEC("cgroup/skb") __description("spin_lock: test6 missing unlock") -__failure __msg("unlock is missing") +__failure __msg("BPF_EXIT instruction cannot be used inside bpf_spin_lock-ed region") __failure_unpriv __msg_unpriv("") __naked void spin_lock_test6_missing_unlock(void) { -- cgit v1.2.3 From 711df091dea9b6f9e83ed738967cb0763f4d362c Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Sun, 3 Nov 2024 14:59:40 -0800 Subject: selftests/bpf: Add tests for tail calls with locks and refs Add failure tests to ensure bugs don't slip through for tail calls and lingering locks, RCU sections, preemption disabled sections, and references prevent tail calls. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20241103225940.1408302-4-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/prog_tests/tailcalls.c | 8 +++ tools/testing/selftests/bpf/progs/tailcall_fail.c | 64 ++++++++++++++++++++++ 2 files changed, 72 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/tailcall_fail.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/tailcalls.c b/tools/testing/selftests/bpf/prog_tests/tailcalls.c index 40f22454cf05..544144620ca6 100644 --- a/tools/testing/selftests/bpf/prog_tests/tailcalls.c +++ b/tools/testing/selftests/bpf/prog_tests/tailcalls.c @@ -7,6 +7,7 @@ #include "tailcall_bpf2bpf_hierarchy3.skel.h" #include "tailcall_freplace.skel.h" #include "tc_bpf2bpf.skel.h" +#include "tailcall_fail.skel.h" /* test_tailcall_1 checks basic functionality by patching multiple locations * in a single program for a single tail call slot with nop->jmp, jmp->nop @@ -1646,6 +1647,11 @@ out: tc_bpf2bpf__destroy(tc_skel); } +static void test_tailcall_failure() +{ + RUN_TESTS(tailcall_fail); +} + void test_tailcalls(void) { if (test__start_subtest("tailcall_1")) @@ -1698,4 +1704,6 @@ void test_tailcalls(void) test_tailcall_freplace(); if (test__start_subtest("tailcall_bpf2bpf_freplace")) test_tailcall_bpf2bpf_freplace(); + if (test__start_subtest("tailcall_failure")) + test_tailcall_failure(); } diff --git a/tools/testing/selftests/bpf/progs/tailcall_fail.c b/tools/testing/selftests/bpf/progs/tailcall_fail.c new file mode 100644 index 000000000000..bc77921d2bb0 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/tailcall_fail.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ +#include +#include +#include +#include + +#include "bpf_misc.h" +#include "bpf_experimental.h" + +extern void bpf_rcu_read_lock(void) __ksym; +extern void bpf_rcu_read_unlock(void) __ksym; + +#define private(name) SEC(".bss." #name) __hidden __attribute__((aligned(8))) + +private(A) struct bpf_spin_lock lock; + +struct { + __uint(type, BPF_MAP_TYPE_PROG_ARRAY); + __uint(max_entries, 3); + __uint(key_size, sizeof(__u32)); + __uint(value_size, sizeof(__u32)); +} jmp_table SEC(".maps"); + +SEC("?tc") +__failure __msg("function calls are not allowed while holding a lock") +int reject_tail_call_spin_lock(struct __sk_buff *ctx) +{ + bpf_spin_lock(&lock); + bpf_tail_call_static(ctx, &jmp_table, 0); + return 0; +} + +SEC("?tc") +__failure __msg("tail_call cannot be used inside bpf_rcu_read_lock-ed region") +int reject_tail_call_rcu_lock(struct __sk_buff *ctx) +{ + bpf_rcu_read_lock(); + bpf_tail_call_static(ctx, &jmp_table, 0); + bpf_rcu_read_unlock(); + return 0; +} + +SEC("?tc") +__failure __msg("tail_call cannot be used inside bpf_preempt_disable-ed region") +int reject_tail_call_preempt_lock(struct __sk_buff *ctx) +{ + bpf_guard_preempt(); + bpf_tail_call_static(ctx, &jmp_table, 0); + return 0; +} + +SEC("?tc") +__failure __msg("tail_call would lead to reference leak") +int reject_tail_call_ref(struct __sk_buff *ctx) +{ + struct foo { int i; } *p; + + p = bpf_obj_new(typeof(*p)); + bpf_tail_call_static(ctx, &jmp_table, 0); + return 0; +} + +char _license[] SEC("license") = "GPL"; -- cgit v1.2.3 From fcd54cf480c87b96313a97dbf898c644b7bb3a2e Mon Sep 17 00:00:00 2001 From: Emil Dahl Juhl Date: Tue, 15 Oct 2024 19:18:26 +0200 Subject: tools/lib/thermal: Fix sampling handler context ptr The sampling handler, provided by the user alongside a void* context, was invoked with an internal structure instead of the user context. Correct the invocation of the sampling handler to pass the user context pointer instead. Note that the approach taken is similar to that in events.c, and will reduce the chances of this mistake happening if additional sampling callbacks are added. Fixes: 47c4b0de080a ("tools/lib/thermal: Add a thermal library") Signed-off-by: Emil Dahl Juhl Link: https://lore.kernel.org/r/20241015171826.170154-1-emdj@bang-olufsen.dk Signed-off-by: Daniel Lezcano --- tools/lib/thermal/sampling.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/lib/thermal/sampling.c b/tools/lib/thermal/sampling.c index 70577423a9f0..f67c1f9ea1d7 100644 --- a/tools/lib/thermal/sampling.c +++ b/tools/lib/thermal/sampling.c @@ -16,6 +16,8 @@ static int handle_thermal_sample(struct nl_msg *n, void *arg) struct thermal_handler_param *thp = arg; struct thermal_handler *th = thp->th; + arg = thp->arg; + genlmsg_parse(nlh, 0, attrs, THERMAL_GENL_ATTR_MAX, NULL); switch (genlhdr->cmd) { -- cgit v1.2.3 From c5426dcc5a3a064bbd2de383e29035a14fe933e0 Mon Sep 17 00:00:00 2001 From: zhang jiao Date: Thu, 12 Sep 2024 12:50:31 +0800 Subject: tools/lib/thermal: Remove the thermal.h soft link when doing make clean Run "make -C tools thermal" can create a soft link for thermal.h in tools/include/uapi/linux. Just rm it when make clean. Signed-off-by: zhang jiao Link: https://lore.kernel.org/r/20240912045031.18426-1-zhangjiao2@cmss.chinamobile.com Signed-off-by: Daniel Lezcano --- tools/lib/thermal/Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/lib/thermal/Makefile b/tools/lib/thermal/Makefile index 2d0d255fd0e1..8890fd57b110 100644 --- a/tools/lib/thermal/Makefile +++ b/tools/lib/thermal/Makefile @@ -121,7 +121,9 @@ all: fixdep clean: $(call QUIET_CLEAN, libthermal) $(RM) $(LIBTHERMAL_A) \ - *.o *~ *.a *.so *.so.$(VERSION) *.so.$(LIBTHERMAL_VERSION) .*.d .*.cmd LIBTHERMAL-CFLAGS $(LIBTHERMAL_PC) + *.o *~ *.a *.so *.so.$(VERSION) *.so.$(LIBTHERMAL_VERSION) \ + .*.d .*.cmd LIBTHERMAL-CFLAGS $(LIBTHERMAL_PC) \ + $(srctree)/tools/$(THERMAL_UAPI) $(LIBTHERMAL_PC): $(QUIET_GEN)sed -e "s|@PREFIX@|$(prefix)|" \ -- cgit v1.2.3 From 6e182dc9f2680681ffb0b6d9757927f1bd321b38 Mon Sep 17 00:00:00 2001 From: Kevin Brodsky Date: Tue, 29 Oct 2024 14:45:38 +0000 Subject: selftests/mm: Use generic pkey register manipulation pkey_sighandler_tests.c currently hardcodes x86 PKRU encodings. The first step towards running those tests on arm64 is to abstract away the pkey register values. Since those tests want to deny access to all keys except a few, we have each arch define PKEY_REG_ALLOW_NONE, the pkey register value denying access to all keys. We then use the existing set_pkey_bits() helper to grant access to specific keys. Because pkeys may also remove the execute permission on arm64, we need to be a little careful: all code is mapped with pkey 0, and we need it to remain executable. pkey_reg_restrictive_default() is introduced for that purpose: the value it returns prevents RW access to all pkeys, but retains X permission for pkey 0. test_pkru_preserved_after_sigusr1() only checks that the pkey register value remains unchanged after a signal is delivered, so the particular value is irrelevant. We enable pkey 0 and a few more arbitrary keys in the smallest range available on all architectures (8 keys on arm64). Signed-off-by: Kevin Brodsky Acked-by: Dave Hansen Link: https://lore.kernel.org/r/20241029144539.111155-5-kevin.brodsky@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/mm/pkey-arm64.h | 1 + tools/testing/selftests/mm/pkey-x86.h | 2 + tools/testing/selftests/mm/pkey_sighandler_tests.c | 53 ++++++++++++++++++---- 3 files changed, 47 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/mm/pkey-arm64.h b/tools/testing/selftests/mm/pkey-arm64.h index 580e1b0bb38e..d57fbeace38f 100644 --- a/tools/testing/selftests/mm/pkey-arm64.h +++ b/tools/testing/selftests/mm/pkey-arm64.h @@ -31,6 +31,7 @@ #define NR_RESERVED_PKEYS 1 /* pkey-0 */ #define PKEY_ALLOW_ALL 0x77777777 +#define PKEY_REG_ALLOW_NONE 0x0 #define PKEY_BITS_PER_PKEY 4 #define PAGE_SIZE sysconf(_SC_PAGESIZE) diff --git a/tools/testing/selftests/mm/pkey-x86.h b/tools/testing/selftests/mm/pkey-x86.h index 5f28e26a2511..ac91777c8917 100644 --- a/tools/testing/selftests/mm/pkey-x86.h +++ b/tools/testing/selftests/mm/pkey-x86.h @@ -34,6 +34,8 @@ #define PAGE_SIZE 4096 #define MB (1<<20) +#define PKEY_REG_ALLOW_NONE 0x55555555 + static inline void __page_o_noops(void) { /* 8-bytes of instruction * 512 bytes = 1 page */ diff --git a/tools/testing/selftests/mm/pkey_sighandler_tests.c b/tools/testing/selftests/mm/pkey_sighandler_tests.c index a8088b645ad6..501880dbdc37 100644 --- a/tools/testing/selftests/mm/pkey_sighandler_tests.c +++ b/tools/testing/selftests/mm/pkey_sighandler_tests.c @@ -11,6 +11,7 @@ */ #define _GNU_SOURCE #define __SANE_USERSPACE_TYPES__ +#include #include #include #include @@ -65,6 +66,20 @@ long syscall_raw(long n, long a1, long a2, long a3, long a4, long a5, long a6) return ret; } +/* + * Returns the most restrictive pkey register value that can be used by the + * tests. + */ +static inline u64 pkey_reg_restrictive_default(void) +{ + /* + * Disallow everything except execution on pkey 0, so that each caller + * doesn't need to enable it explicitly (the selftest code runs with + * its code mapped with pkey 0). + */ + return set_pkey_bits(PKEY_REG_ALLOW_NONE, 0, PKEY_DISABLE_ACCESS); +} + static void sigsegv_handler(int signo, siginfo_t *info, void *ucontext) { pthread_mutex_lock(&mutex); @@ -113,7 +128,7 @@ static void raise_sigusr2(void) static void *thread_segv_with_pkey0_disabled(void *ptr) { /* Disable MPK 0 (and all others too) */ - __write_pkey_reg(0x55555555); + __write_pkey_reg(pkey_reg_restrictive_default()); /* Segfault (with SEGV_MAPERR) */ *(int *) (0x1) = 1; @@ -123,7 +138,7 @@ static void *thread_segv_with_pkey0_disabled(void *ptr) static void *thread_segv_pkuerr_stack(void *ptr) { /* Disable MPK 0 (and all others too) */ - __write_pkey_reg(0x55555555); + __write_pkey_reg(pkey_reg_restrictive_default()); /* After we disable MPK 0, we can't access the stack to return */ return NULL; @@ -133,6 +148,7 @@ static void *thread_segv_maperr_ptr(void *ptr) { stack_t *stack = ptr; int *bad = (int *)1; + u64 pkey_reg; /* * Setup alternate signal stack, which should be pkey_mprotect()ed by @@ -142,7 +158,9 @@ static void *thread_segv_maperr_ptr(void *ptr) syscall_raw(SYS_sigaltstack, (long)stack, 0, 0, 0, 0, 0); /* Disable MPK 0. Only MPK 1 is enabled. */ - __write_pkey_reg(0x55555551); + pkey_reg = pkey_reg_restrictive_default(); + pkey_reg = set_pkey_bits(pkey_reg, 1, PKEY_UNRESTRICTED); + __write_pkey_reg(pkey_reg); /* Segfault */ *bad = 1; @@ -240,6 +258,7 @@ static void test_sigsegv_handler_with_different_pkey_for_stack(void) int pkey; int parent_pid = 0; int child_pid = 0; + u64 pkey_reg; sa.sa_flags = SA_SIGINFO | SA_ONSTACK; @@ -257,7 +276,10 @@ static void test_sigsegv_handler_with_different_pkey_for_stack(void) assert(stack != MAP_FAILED); /* Allow access to MPK 0 and MPK 1 */ - __write_pkey_reg(0x55555550); + pkey_reg = pkey_reg_restrictive_default(); + pkey_reg = set_pkey_bits(pkey_reg, 0, PKEY_UNRESTRICTED); + pkey_reg = set_pkey_bits(pkey_reg, 1, PKEY_UNRESTRICTED); + __write_pkey_reg(pkey_reg); /* Protect the new stack with MPK 1 */ pkey = pkey_alloc(0, 0); @@ -307,7 +329,13 @@ static void test_sigsegv_handler_with_different_pkey_for_stack(void) static void test_pkru_preserved_after_sigusr1(void) { struct sigaction sa; - unsigned long pkru = 0x45454544; + u64 pkey_reg; + + /* Allow access to MPK 0 and an arbitrary set of keys */ + pkey_reg = pkey_reg_restrictive_default(); + pkey_reg = set_pkey_bits(pkey_reg, 0, PKEY_UNRESTRICTED); + pkey_reg = set_pkey_bits(pkey_reg, 3, PKEY_UNRESTRICTED); + pkey_reg = set_pkey_bits(pkey_reg, 7, PKEY_UNRESTRICTED); sa.sa_flags = SA_SIGINFO; @@ -320,7 +348,7 @@ static void test_pkru_preserved_after_sigusr1(void) memset(&siginfo, 0, sizeof(siginfo)); - __write_pkey_reg(pkru); + __write_pkey_reg(pkey_reg); raise(SIGUSR1); @@ -330,7 +358,7 @@ static void test_pkru_preserved_after_sigusr1(void) pthread_mutex_unlock(&mutex); /* Ensure the pkru value is the same after returning from signal. */ - ksft_test_result(pkru == __read_pkey_reg() && + ksft_test_result(pkey_reg == __read_pkey_reg() && siginfo.si_signo == SIGUSR1, "%s\n", __func__); } @@ -347,6 +375,7 @@ static noinline void *thread_sigusr2_self(void *ptr) 'S', 'I', 'G', 'U', 'S', 'R', '2', '.', '.', '.', '\n', '\0'}; stack_t *stack = ptr; + u64 pkey_reg; /* * Setup alternate signal stack, which should be pkey_mprotect()ed by @@ -356,7 +385,9 @@ static noinline void *thread_sigusr2_self(void *ptr) syscall(SYS_sigaltstack, (long)stack, 0, 0, 0, 0, 0); /* Disable MPK 0. Only MPK 2 is enabled. */ - __write_pkey_reg(0x55555545); + pkey_reg = pkey_reg_restrictive_default(); + pkey_reg = set_pkey_bits(pkey_reg, 2, PKEY_UNRESTRICTED); + __write_pkey_reg(pkey_reg); raise_sigusr2(); @@ -384,6 +415,7 @@ static void test_pkru_sigreturn(void) int pkey; int parent_pid = 0; int child_pid = 0; + u64 pkey_reg; sa.sa_handler = SIG_DFL; sa.sa_flags = 0; @@ -418,7 +450,10 @@ static void test_pkru_sigreturn(void) * the current thread's stack is protected by the default MPK 0. Hence * both need to be enabled. */ - __write_pkey_reg(0x55555544); + pkey_reg = pkey_reg_restrictive_default(); + pkey_reg = set_pkey_bits(pkey_reg, 0, PKEY_UNRESTRICTED); + pkey_reg = set_pkey_bits(pkey_reg, 2, PKEY_UNRESTRICTED); + __write_pkey_reg(pkey_reg); /* Protect the stack with MPK 2 */ pkey = pkey_alloc(0, 0); -- cgit v1.2.3 From 49f59573e9e06093ba23caf4ea1641b16e7e497e Mon Sep 17 00:00:00 2001 From: Kevin Brodsky Date: Tue, 29 Oct 2024 14:45:39 +0000 Subject: selftests/mm: Enable pkey_sighandler_tests on arm64 pkey_sighandler_tests.c makes raw syscalls using its own helper, syscall_raw(). One of those syscalls is clone, which is problematic as every architecture has a different opinion on the order of its arguments. To complete arm64 support, we therefore add an appropriate implementation in syscall_raw(), and introduce a clone_raw() helper that shuffles arguments as needed for each arch. Having done this, we enable building pkey_sighandler_tests for arm64 in the Makefile. Signed-off-by: Kevin Brodsky Link: https://lore.kernel.org/r/20241029144539.111155-6-kevin.brodsky@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/mm/Makefile | 8 +-- tools/testing/selftests/mm/pkey_sighandler_tests.c | 62 ++++++++++++++++------ 2 files changed, 50 insertions(+), 20 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile index 02e1204971b0..0f8c110e0805 100644 --- a/tools/testing/selftests/mm/Makefile +++ b/tools/testing/selftests/mm/Makefile @@ -105,12 +105,12 @@ endif ifeq ($(CAN_BUILD_X86_64),1) TEST_GEN_FILES += $(BINARIES_64) endif -else -ifneq (,$(filter $(ARCH),arm64 powerpc)) +else ifeq ($(ARCH),arm64) +TEST_GEN_FILES += protection_keys +TEST_GEN_FILES += pkey_sighandler_tests +else ifeq ($(ARCH),powerpc) TEST_GEN_FILES += protection_keys -endif - endif ifneq (,$(filter $(ARCH),arm64 mips64 parisc64 powerpc riscv64 s390x sparc64 x86_64 s390)) diff --git a/tools/testing/selftests/mm/pkey_sighandler_tests.c b/tools/testing/selftests/mm/pkey_sighandler_tests.c index 501880dbdc37..c593a426341c 100644 --- a/tools/testing/selftests/mm/pkey_sighandler_tests.c +++ b/tools/testing/selftests/mm/pkey_sighandler_tests.c @@ -60,12 +60,44 @@ long syscall_raw(long n, long a1, long a2, long a3, long a4, long a5, long a6) : "=a"(ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory"); +#elif defined __aarch64__ + register long x0 asm("x0") = a1; + register long x1 asm("x1") = a2; + register long x2 asm("x2") = a3; + register long x3 asm("x3") = a4; + register long x4 asm("x4") = a5; + register long x5 asm("x5") = a6; + register long x8 asm("x8") = n; + asm volatile ("svc #0" + : "=r"(x0) + : "r"(x0), "r"(x1), "r"(x2), "r"(x3), "r"(x4), "r"(x5), "r"(x8) + : "memory"); + ret = x0; #else # error syscall_raw() not implemented #endif return ret; } +static inline long clone_raw(unsigned long flags, void *stack, + int *parent_tid, int *child_tid) +{ + long a1 = flags; + long a2 = (long)stack; + long a3 = (long)parent_tid; +#if defined(__x86_64__) || defined(__i386) + long a4 = (long)child_tid; + long a5 = 0; +#elif defined(__aarch64__) + long a4 = 0; + long a5 = (long)child_tid; +#else +# error clone_raw() not implemented +#endif + + return syscall_raw(SYS_clone, a1, a2, a3, a4, a5, 0); +} + /* * Returns the most restrictive pkey register value that can be used by the * tests. @@ -294,14 +326,13 @@ static void test_sigsegv_handler_with_different_pkey_for_stack(void) memset(&siginfo, 0, sizeof(siginfo)); /* Use clone to avoid newer glibcs using rseq on new threads */ - long ret = syscall_raw(SYS_clone, - CLONE_VM | CLONE_FS | CLONE_FILES | - CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM | - CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID | - CLONE_DETACHED, - (long) ((char *)(stack) + STACK_SIZE), - (long) &parent_pid, - (long) &child_pid, 0, 0); + long ret = clone_raw(CLONE_VM | CLONE_FS | CLONE_FILES | + CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM | + CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID | + CLONE_DETACHED, + stack + STACK_SIZE, + &parent_pid, + &child_pid); if (ret < 0) { errno = -ret; @@ -466,14 +497,13 @@ static void test_pkru_sigreturn(void) sigstack.ss_size = STACK_SIZE; /* Use clone to avoid newer glibcs using rseq on new threads */ - long ret = syscall_raw(SYS_clone, - CLONE_VM | CLONE_FS | CLONE_FILES | - CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM | - CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID | - CLONE_DETACHED, - (long) ((char *)(stack) + STACK_SIZE), - (long) &parent_pid, - (long) &child_pid, 0, 0); + long ret = clone_raw(CLONE_VM | CLONE_FS | CLONE_FILES | + CLONE_SIGHAND | CLONE_THREAD | CLONE_SYSVSEM | + CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID | + CLONE_DETACHED, + stack + STACK_SIZE, + &parent_pid, + &child_pid); if (ret < 0) { errno = -ret; -- cgit v1.2.3 From 13e17c9ff49119aa2826dbf1e130f34d4d7a55d9 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Mon, 28 Oct 2024 12:36:19 -0700 Subject: perf build: Make libunwind opt-in rather than opt-out Having multiple unwinding libraries makes the perf code harder to understand and we have unused/untested code paths. Perf made BPF support an opt-out rather than opt-in feature. As libbpf has a libelf dependency, elfutils that provides libelf will also provide libdw. When libdw is present perf will use libdw unwinding rather than libunwind unwinding even if libunwind support is compiled in. Rather than have libunwind built into perf and never used, explicitly disable the support and make it opt-in. Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/20241028193619.247727-1-irogers@google.com Closes: https://lore.kernel.org/linux-perf-users/CAP-5=fUXkp-d7gkzX4eF+nbjb2978dZsiHZ9abGHN=BN1qAcbg@mail.gmail.com/ Signed-off-by: Namhyung Kim --- tools/perf/Makefile.config | 4 ++++ tools/perf/Makefile.perf | 2 +- tools/perf/tests/make | 6 +++--- 3 files changed, 8 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 8da6d91b7ad5..e68f0be259a1 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -95,6 +95,10 @@ ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv loon NO_LIBDW_DWARF_UNWIND := 1 endif +ifneq ($(LIBUNWIND),1) + NO_LIBUNWIND := 1 +endif + ifeq ($(LIBUNWIND_LIBS),) NO_LIBUNWIND := 1 endif diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index b4dee7c20ed1..d74241a15131 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -52,7 +52,7 @@ include ../scripts/utilities.mak # # Define NO_LIBELF if you do not want libelf dependency (e.g. cross-builds) # -# Define NO_LIBUNWIND if you do not want libunwind dependency for dwarf +# Define LIBUNWIND if you do not want libunwind dependency for dwarf # backtrace post unwind. # # Define NO_BACKTRACE if you do not want stack backtrace debug feature diff --git a/tools/perf/tests/make b/tools/perf/tests/make index a5040772043f..a7fcbd589752 100644 --- a/tools/perf/tests/make +++ b/tools/perf/tests/make @@ -81,7 +81,7 @@ make_no_gtk2 := NO_GTK2=1 make_no_ui := NO_SLANG=1 NO_GTK2=1 make_no_demangle := NO_DEMANGLE=1 make_no_libelf := NO_LIBELF=1 -make_no_libunwind := NO_LIBUNWIND=1 +make_libunwind := LIBUNWIND=1 make_no_libdw_dwarf_unwind := NO_LIBDW_DWARF_UNWIND=1 make_no_backtrace := NO_BACKTRACE=1 make_no_libcapstone := NO_CAPSTONE=1 @@ -121,7 +121,7 @@ make_static := LDFLAGS=-static NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX3 # all the NO_* variable combined make_minimal := NO_LIBPERL=1 NO_LIBPYTHON=1 NO_GTK2=1 -make_minimal += NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 +make_minimal += NO_DEMANGLE=1 NO_LIBELF=1 NO_BACKTRACE=1 make_minimal += NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 make_minimal += NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 make_minimal += NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1 NO_LIBZSTD=1 @@ -153,7 +153,7 @@ run += make_no_gtk2 run += make_no_ui run += make_no_demangle run += make_no_libelf -run += make_no_libunwind +run += make_libunwind run += make_no_libdw_dwarf_unwind run += make_no_backtrace run += make_no_libcapstone -- cgit v1.2.3 From cb4158ce8ec8a5bb528cc1693356a5eb8058094d Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Mon, 4 Nov 2024 09:19:57 -0800 Subject: bpf: Mark raw_tp arguments with PTR_MAYBE_NULL Arguments to a raw tracepoint are tagged as trusted, which carries the semantics that the pointer will be non-NULL. However, in certain cases, a raw tracepoint argument may end up being NULL. More context about this issue is available in [0]. Thus, there is a discrepancy between the reality, that raw_tp arguments can actually be NULL, and the verifier's knowledge, that they are never NULL, causing explicit NULL checks to be deleted, and accesses to such pointers potentially crashing the kernel. To fix this, mark raw_tp arguments as PTR_MAYBE_NULL, and then special case the dereference and pointer arithmetic to permit it, and allow passing them into helpers/kfuncs; these exceptions are made for raw_tp programs only. Ensure that we don't do this when ref_obj_id > 0, as in that case this is an acquired object and doesn't need such adjustment. The reason we do mask_raw_tp_trusted_reg logic is because other will recheck in places whether the register is a trusted_reg, and then consider our register as untrusted when detecting the presence of the PTR_MAYBE_NULL flag. To allow safe dereference, we enable PROBE_MEM marking when we see loads into trusted pointers with PTR_MAYBE_NULL. While trusted raw_tp arguments can also be passed into helpers or kfuncs where such broken assumption may cause issues, a future patch set will tackle their case separately, as PTR_TO_BTF_ID (without PTR_TRUSTED) can already be passed into helpers and causes similar problems. Thus, they are left alone for now. It is possible that these checks also permit passing non-raw_tp args that are trusted PTR_TO_BTF_ID with null marking. In such a case, allowing dereference when pointer is NULL expands allowed behavior, so won't regress existing programs, and the case of passing these into helpers is the same as above and will be dealt with later. Also update the failure case in tp_btf_nullable selftest to capture the new behavior, as the verifier will no longer cause an error when directly dereference a raw tracepoint argument marked as __nullable. [0]: https://lore.kernel.org/bpf/ZrCZS6nisraEqehw@jlelli-thinkpadt14gen4.remote.csb Reviewed-by: Jiri Olsa Reported-by: Juri Lelli Tested-by: Juri Lelli Fixes: 3f00c5239344 ("bpf: Allow trusted pointers to be passed to KF_TRUSTED_ARGS kfuncs") Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20241104171959.2938862-2-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c b/tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c index bba3e37f749b..5aaf2b065f86 100644 --- a/tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c +++ b/tools/testing/selftests/bpf/progs/test_tp_btf_nullable.c @@ -7,7 +7,11 @@ #include "bpf_misc.h" SEC("tp_btf/bpf_testmod_test_nullable_bare") -__failure __msg("R1 invalid mem access 'trusted_ptr_or_null_'") +/* This used to be a failure test, but raw_tp nullable arguments can now + * directly be dereferenced, whether they have nullable annotation or not, + * and don't need to be explicitly checked. + */ +__success int BPF_PROG(handle_tp_btf_nullable_bare1, struct bpf_testmod_test_read_ctx *nullable_ctx) { return nullable_ctx->len; -- cgit v1.2.3 From 0e2fb011a0ba8e2258ce776fdf89fbd589c2a3a6 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Mon, 4 Nov 2024 09:19:58 -0800 Subject: selftests/bpf: Clean up open-coded gettid syscall invocations Availability of the gettid definition across glibc versions supported by BPF selftests is not certain. Currently, all users in the tree open-code syscall to gettid. Convert them to a common macro definition. Reviewed-by: Jiri Olsa Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20241104171959.2938862-3-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/benchs/bench_trigger.c | 3 ++- tools/testing/selftests/bpf/bpf_util.h | 9 +++++++++ tools/testing/selftests/bpf/map_tests/task_storage_map.c | 3 ++- tools/testing/selftests/bpf/prog_tests/bpf_cookie.c | 2 +- tools/testing/selftests/bpf/prog_tests/bpf_iter.c | 6 +++--- tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c | 10 +++++----- tools/testing/selftests/bpf/prog_tests/core_reloc.c | 2 +- tools/testing/selftests/bpf/prog_tests/linked_funcs.c | 2 +- tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c | 2 +- tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c | 4 ++-- tools/testing/selftests/bpf/prog_tests/task_local_storage.c | 10 +++++----- tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c | 2 +- 12 files changed, 33 insertions(+), 22 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/benchs/bench_trigger.c b/tools/testing/selftests/bpf/benchs/bench_trigger.c index 2ed0ef6f21ee..32e9f194d449 100644 --- a/tools/testing/selftests/bpf/benchs/bench_trigger.c +++ b/tools/testing/selftests/bpf/benchs/bench_trigger.c @@ -4,6 +4,7 @@ #include #include #include +#include "bpf_util.h" #include "bench.h" #include "trigger_bench.skel.h" #include "trace_helpers.h" @@ -72,7 +73,7 @@ static __always_inline void inc_counter(struct counter *counters) unsigned slot; if (unlikely(tid == 0)) - tid = syscall(SYS_gettid); + tid = sys_gettid(); /* multiplicative hashing, it's fast */ slot = 2654435769U * tid; diff --git a/tools/testing/selftests/bpf/bpf_util.h b/tools/testing/selftests/bpf/bpf_util.h index 10587a29b967..feff92219e21 100644 --- a/tools/testing/selftests/bpf/bpf_util.h +++ b/tools/testing/selftests/bpf/bpf_util.h @@ -6,6 +6,7 @@ #include #include #include +#include #include /* libbpf_num_possible_cpus */ static inline unsigned int bpf_num_possible_cpus(void) @@ -59,4 +60,12 @@ static inline void bpf_strlcpy(char *dst, const char *src, size_t sz) (offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER)) #endif +/* Availability of gettid across glibc versions is hit-and-miss, therefore + * fallback to syscall in this macro and use it everywhere. + */ +#ifndef sys_gettid +#define sys_gettid() syscall(SYS_gettid) +#endif + + #endif /* __BPF_UTIL__ */ diff --git a/tools/testing/selftests/bpf/map_tests/task_storage_map.c b/tools/testing/selftests/bpf/map_tests/task_storage_map.c index 7d050364efca..62971dbf2996 100644 --- a/tools/testing/selftests/bpf/map_tests/task_storage_map.c +++ b/tools/testing/selftests/bpf/map_tests/task_storage_map.c @@ -12,6 +12,7 @@ #include #include +#include "bpf_util.h" #include "test_maps.h" #include "task_local_storage_helpers.h" #include "read_bpf_task_storage_busy.skel.h" @@ -115,7 +116,7 @@ void test_task_storage_map_stress_lookup(void) CHECK(err, "attach", "error %d\n", err); /* Trigger program */ - syscall(SYS_gettid); + sys_gettid(); skel->bss->pid = 0; CHECK(skel->bss->busy != 0, "bad bpf_task_storage_busy", "got %d\n", skel->bss->busy); diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c index 070c52c312e5..6befa870434b 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c @@ -690,7 +690,7 @@ void test_bpf_cookie(void) if (!ASSERT_OK_PTR(skel, "skel_open")) return; - skel->bss->my_tid = syscall(SYS_gettid); + skel->bss->my_tid = sys_gettid(); if (test__start_subtest("kprobe")) kprobe_subtest(skel); diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c index 9006549a1294..b8e1224cfd19 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c @@ -226,7 +226,7 @@ static void test_task_common_nocheck(struct bpf_iter_attach_opts *opts, ASSERT_OK(pthread_create(&thread_id, NULL, &do_nothing_wait, NULL), "pthread_create"); - skel->bss->tid = syscall(SYS_gettid); + skel->bss->tid = sys_gettid(); do_dummy_read_opts(skel->progs.dump_task, opts); @@ -255,10 +255,10 @@ static void *run_test_task_tid(void *arg) union bpf_iter_link_info linfo; int num_unknown_tid, num_known_tid; - ASSERT_NEQ(getpid(), syscall(SYS_gettid), "check_new_thread_id"); + ASSERT_NEQ(getpid(), sys_gettid(), "check_new_thread_id"); memset(&linfo, 0, sizeof(linfo)); - linfo.task.tid = syscall(SYS_gettid); + linfo.task.tid = sys_gettid(); opts.link_info = &linfo; opts.link_info_len = sizeof(linfo); test_task_common(&opts, 0, 1); diff --git a/tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c b/tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c index 747761572098..9015e2c2ab12 100644 --- a/tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c +++ b/tools/testing/selftests/bpf/prog_tests/cgrp_local_storage.c @@ -63,14 +63,14 @@ static void test_tp_btf(int cgroup_fd) if (!ASSERT_OK(err, "map_delete_elem")) goto out; - skel->bss->target_pid = syscall(SYS_gettid); + skel->bss->target_pid = sys_gettid(); err = cgrp_ls_tp_btf__attach(skel); if (!ASSERT_OK(err, "skel_attach")) goto out; - syscall(SYS_gettid); - syscall(SYS_gettid); + sys_gettid(); + sys_gettid(); skel->bss->target_pid = 0; @@ -154,7 +154,7 @@ static void test_recursion(int cgroup_fd) goto out; /* trigger sys_enter, make sure it does not cause deadlock */ - syscall(SYS_gettid); + sys_gettid(); out: cgrp_ls_recursion__destroy(skel); @@ -224,7 +224,7 @@ static void test_yes_rcu_lock(__u64 cgroup_id) return; CGROUP_MODE_SET(skel); - skel->bss->target_pid = syscall(SYS_gettid); + skel->bss->target_pid = sys_gettid(); bpf_program__set_autoload(skel->progs.yes_rcu_lock, true); err = cgrp_ls_sleepable__load(skel); diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c index 26019313e1fc..1c682550e0e7 100644 --- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c +++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c @@ -1010,7 +1010,7 @@ static void run_core_reloc_tests(bool use_btfgen) struct data *data; void *mmap_data = NULL; - my_pid_tgid = getpid() | ((uint64_t)syscall(SYS_gettid) << 32); + my_pid_tgid = getpid() | ((uint64_t)sys_gettid() << 32); for (i = 0; i < ARRAY_SIZE(test_cases); i++) { char btf_file[] = "/tmp/core_reloc.btf.XXXXXX"; diff --git a/tools/testing/selftests/bpf/prog_tests/linked_funcs.c b/tools/testing/selftests/bpf/prog_tests/linked_funcs.c index cad664546912..fa639b021f7e 100644 --- a/tools/testing/selftests/bpf/prog_tests/linked_funcs.c +++ b/tools/testing/selftests/bpf/prog_tests/linked_funcs.c @@ -20,7 +20,7 @@ void test_linked_funcs(void) bpf_program__set_autoload(skel->progs.handler1, true); bpf_program__set_autoload(skel->progs.handler2, true); - skel->rodata->my_tid = syscall(SYS_gettid); + skel->rodata->my_tid = sys_gettid(); skel->bss->syscall_id = SYS_getpgid; err = linked_funcs__load(skel); diff --git a/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c b/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c index c29787e092d6..761ce24bce38 100644 --- a/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c +++ b/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c @@ -23,7 +23,7 @@ static int get_pid_tgid(pid_t *pid, pid_t *tgid, struct stat st; int err; - *pid = syscall(SYS_gettid); + *pid = sys_gettid(); *tgid = getpid(); err = stat("/proc/self/ns/pid", &st); diff --git a/tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c b/tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c index a1f7e7378a64..ebe0c12b5536 100644 --- a/tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c +++ b/tools/testing/selftests/bpf/prog_tests/rcu_read_lock.c @@ -21,7 +21,7 @@ static void test_success(void) if (!ASSERT_OK_PTR(skel, "skel_open")) return; - skel->bss->target_pid = syscall(SYS_gettid); + skel->bss->target_pid = sys_gettid(); bpf_program__set_autoload(skel->progs.get_cgroup_id, true); bpf_program__set_autoload(skel->progs.task_succ, true); @@ -58,7 +58,7 @@ static void test_rcuptr_acquire(void) if (!ASSERT_OK_PTR(skel, "skel_open")) return; - skel->bss->target_pid = syscall(SYS_gettid); + skel->bss->target_pid = sys_gettid(); bpf_program__set_autoload(skel->progs.task_acquire, true); err = rcu_read_lock__load(skel); diff --git a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c index 00cc9d0aee5d..60f474d965a9 100644 --- a/tools/testing/selftests/bpf/prog_tests/task_local_storage.c +++ b/tools/testing/selftests/bpf/prog_tests/task_local_storage.c @@ -31,14 +31,14 @@ static void test_sys_enter_exit(void) if (!ASSERT_OK_PTR(skel, "skel_open_and_load")) return; - skel->bss->target_pid = syscall(SYS_gettid); + skel->bss->target_pid = sys_gettid(); err = task_local_storage__attach(skel); if (!ASSERT_OK(err, "skel_attach")) goto out; - syscall(SYS_gettid); - syscall(SYS_gettid); + sys_gettid(); + sys_gettid(); /* 3x syscalls: 1x attach and 2x gettid */ ASSERT_EQ(skel->bss->enter_cnt, 3, "enter_cnt"); @@ -107,7 +107,7 @@ static void test_recursion(void) /* trigger sys_enter, make sure it does not cause deadlock */ skel->bss->test_pid = getpid(); - syscall(SYS_gettid); + sys_gettid(); skel->bss->test_pid = 0; task_ls_recursion__detach(skel); @@ -262,7 +262,7 @@ static void test_uptr_basic(void) __u64 ev_dummy_data = 1; int err; - my_tid = syscall(SYS_gettid); + my_tid = sys_gettid(); parent_task_fd = sys_pidfd_open(my_tid, 0); if (!ASSERT_OK_FD(parent_task_fd, "parent_task_fd")) return; diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c index 2c39902b8a09..619b31cd24a1 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c @@ -125,7 +125,7 @@ static void *child_thread(void *ctx) struct child *child = ctx; int c = 0, err; - child->tid = syscall(SYS_gettid); + child->tid = sys_gettid(); /* let parent know we are ready */ err = write(child->c2p[1], &c, 1); -- cgit v1.2.3 From d798ce3f4cab1b0d886b19ec5cc8e6b3d7e35081 Mon Sep 17 00:00:00 2001 From: Kumar Kartikeya Dwivedi Date: Mon, 4 Nov 2024 09:19:59 -0800 Subject: selftests/bpf: Add tests for raw_tp null handling Ensure that trusted PTR_TO_BTF_ID accesses perform PROBE_MEM handling in raw_tp program. Without the previous fix, this selftest crashes the kernel due to a NULL-pointer dereference. Also ensure that dead code elimination does not kick in for checks on the pointer. Reviewed-by: Jiri Olsa Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20241104171959.2938862-4-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/bpf_testmod/bpf_testmod-events.h | 8 ++++++ .../selftests/bpf/bpf_testmod/bpf_testmod.c | 2 ++ .../testing/selftests/bpf/prog_tests/raw_tp_null.c | 25 +++++++++++++++++ tools/testing/selftests/bpf/progs/raw_tp_null.c | 32 ++++++++++++++++++++++ 4 files changed, 67 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/raw_tp_null.c create mode 100644 tools/testing/selftests/bpf/progs/raw_tp_null.c (limited to 'tools') diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h index 6c3b4d4f173a..aeef86b3da74 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h @@ -40,6 +40,14 @@ DECLARE_TRACE(bpf_testmod_test_nullable_bare, TP_ARGS(ctx__nullable) ); +struct sk_buff; + +DECLARE_TRACE(bpf_testmod_test_raw_tp_null, + TP_PROTO(struct sk_buff *skb), + TP_ARGS(skb) +); + + #undef BPF_TESTMOD_DECLARE_TRACE #ifdef DECLARE_TRACE_WRITABLE #define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \ diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c index 8835761d9a12..4e6a9e9c0368 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c @@ -380,6 +380,8 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj, (void)bpf_testmod_test_arg_ptr_to_struct(&struct_arg1_2); + (void)trace_bpf_testmod_test_raw_tp_null(NULL); + struct_arg3 = kmalloc((sizeof(struct bpf_testmod_struct_arg_3) + sizeof(int)), GFP_KERNEL); if (struct_arg3 != NULL) { diff --git a/tools/testing/selftests/bpf/prog_tests/raw_tp_null.c b/tools/testing/selftests/bpf/prog_tests/raw_tp_null.c new file mode 100644 index 000000000000..6fa19449297e --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/raw_tp_null.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ + +#include +#include "raw_tp_null.skel.h" + +void test_raw_tp_null(void) +{ + struct raw_tp_null *skel; + + skel = raw_tp_null__open_and_load(); + if (!ASSERT_OK_PTR(skel, "raw_tp_null__open_and_load")) + return; + + skel->bss->tid = sys_gettid(); + + if (!ASSERT_OK(raw_tp_null__attach(skel), "raw_tp_null__attach")) + goto end; + + ASSERT_OK(trigger_module_test_read(2), "trigger testmod read"); + ASSERT_EQ(skel->bss->i, 3, "invocations"); + +end: + raw_tp_null__destroy(skel); +} diff --git a/tools/testing/selftests/bpf/progs/raw_tp_null.c b/tools/testing/selftests/bpf/progs/raw_tp_null.c new file mode 100644 index 000000000000..457f34c151e3 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/raw_tp_null.c @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ + +#include +#include + +char _license[] SEC("license") = "GPL"; + +int tid; +int i; + +SEC("tp_btf/bpf_testmod_test_raw_tp_null") +int BPF_PROG(test_raw_tp_null, struct sk_buff *skb) +{ + struct task_struct *task = bpf_get_current_task_btf(); + + if (task->pid != tid) + return 0; + + i = i + skb->mark + 1; + /* The compiler may move the NULL check before this deref, which causes + * the load to fail as deref of scalar. Prevent that by using a barrier. + */ + barrier(); + /* If dead code elimination kicks in, the increment below will + * be removed. For raw_tp programs, we mark input arguments as + * PTR_MAYBE_NULL, so branch prediction should never kick in. + */ + if (!skb) + i += 2; + return 0; +} -- cgit v1.2.3 From 18f5744e8200e3c2bfeb896d6d3c10c3f0946318 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:38 -0700 Subject: selftests/resctrl: Make functions only used in same file static MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix following sparse warnings: tools/testing/selftests/resctrl/resctrl_val.c:47:6: warning: symbol 'membw_initialize_perf_event_attr' was not declared. Should it be static? tools/testing/selftests/resctrl/resctrl_val.c:64:6: warning: symbol 'membw_ioctl_perf_event_ioc_reset_enable' was not declared. Should it be static? tools/testing/selftests/resctrl/resctrl_val.c:70:6: warning: symbol 'membw_ioctl_perf_event_ioc_disable' was not declared. Should it be static? tools/testing/selftests/resctrl/resctrl_val.c:81:6: warning: symbol 'get_event_and_umask' was not declared. Should it be static? Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/resctrl_val.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 8c275f6b4dd7..70e8e31f5d1a 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -44,7 +44,7 @@ static int imcs; static struct imc_counter_config imc_counters_config[MAX_IMCS][2]; static const struct resctrl_test *current_test; -void membw_initialize_perf_event_attr(int i, int j) +static void membw_initialize_perf_event_attr(int i, int j) { memset(&imc_counters_config[i][j].pe, 0, sizeof(struct perf_event_attr)); @@ -61,13 +61,13 @@ void membw_initialize_perf_event_attr(int i, int j) PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING; } -void membw_ioctl_perf_event_ioc_reset_enable(int i, int j) +static void membw_ioctl_perf_event_ioc_reset_enable(int i, int j) { ioctl(imc_counters_config[i][j].fd, PERF_EVENT_IOC_RESET, 0); ioctl(imc_counters_config[i][j].fd, PERF_EVENT_IOC_ENABLE, 0); } -void membw_ioctl_perf_event_ioc_disable(int i, int j) +static void membw_ioctl_perf_event_ioc_disable(int i, int j) { ioctl(imc_counters_config[i][j].fd, PERF_EVENT_IOC_DISABLE, 0); } @@ -78,7 +78,7 @@ void membw_ioctl_perf_event_ioc_disable(int i, int j) * @count: iMC number * @op: Operation (read/write) */ -void get_event_and_umask(char *cas_count_cfg, int count, bool op) +static void get_event_and_umask(char *cas_count_cfg, int count, bool op) { char *token[MAX_TOKENS]; int i = 0; -- cgit v1.2.3 From 1b4840395f08e9723a15fea42c2d31090e8375f3 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:39 -0700 Subject: selftests/resctrl: Print accurate buffer size as part of MBM results MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit By default the MBM test uses the "fill_buf" benchmark to keep reading from a buffer with size DEFAULT_SPAN while measuring memory bandwidth. User space can provide an alternate benchmark or amend the size of the buffer "fill_buf" should use. Analysis of the MBM measurements do not require that a buffer be used and thus do not require knowing the size of the buffer if it was used during testing. Even so, the buffer size is printed as informational as part of the MBM test results. What is printed as buffer size is hardcoded as DEFAULT_SPAN, even if the test relied on another benchmark (that may or may not use a buffer) or if user space amended the buffer size. Ensure that accurate buffer size is printed when using "fill_buf" benchmark and omit the buffer size information if another benchmark is used. Fixes: ecdbb911f22d ("selftests/resctrl: Add MBM test") Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/mbm_test.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index 6b5a3b52d861..cf08ba5e314e 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -40,7 +40,8 @@ show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, size_t span) ksft_print_msg("%s Check MBM diff within %d%%\n", ret ? "Fail:" : "Pass:", MAX_DIFF_PERCENT); ksft_print_msg("avg_diff_per: %d%%\n", avg_diff_per); - ksft_print_msg("Span (MB): %zu\n", span / MB); + if (span) + ksft_print_msg("Span (MB): %zu\n", span / MB); ksft_print_msg("avg_bw_imc: %lu\n", avg_bw_imc); ksft_print_msg("avg_bw_resc: %lu\n", avg_bw_resc); @@ -138,15 +139,26 @@ static int mbm_run_test(const struct resctrl_test *test, const struct user_param .setup = mbm_setup, .measure = mbm_measure, }; + char *endptr = NULL; + size_t span = 0; int ret; remove(RESULT_FILE_NAME); + if (uparams->benchmark_cmd[0] && strcmp(uparams->benchmark_cmd[0], "fill_buf") == 0) { + if (uparams->benchmark_cmd[1] && *uparams->benchmark_cmd[1] != '\0') { + errno = 0; + span = strtoul(uparams->benchmark_cmd[1], &endptr, 10); + if (errno || *endptr != '\0') + return -EINVAL; + } + } + ret = resctrl_val(test, uparams, uparams->benchmark_cmd, ¶m); if (ret) return ret; - ret = check_results(DEFAULT_SPAN); + ret = check_results(span); if (ret && (get_vendor() == ARCH_INTEL)) ksft_print_msg("Intel MBM may be inaccurate when Sub-NUMA Clustering is enabled. Check BIOS configuration.\n"); -- cgit v1.2.3 From caf02626b2bf164a02c808240f19dbf97aced664 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:40 -0700 Subject: selftests/resctrl: Fix memory overflow due to unhandled wraparound MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit alloc_buffer() allocates and initializes (with random data) a buffer of requested size. The initialization starts from the beginning of the allocated buffer and incrementally assigns sizeof(uint64_t) random data to each cache line. The initialization uses the size of the buffer to control the initialization flow, decrementing the amount of buffer needing to be initialized after each iteration. The size of the buffer is stored in an unsigned (size_t) variable s64 and the test "s64 > 0" is used to decide if initialization is complete. The problem is that decrementing the buffer size may wrap around if the buffer size is not divisible by "CL_SIZE / sizeof(uint64_t)" resulting in the "s64 > 0" test being true and memory beyond the buffer "initialized". Use a signed value for the buffer size to support all buffer sizes. Fixes: a2561b12fe39 ("selftests/resctrl: Add built in benchmark") Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/fill_buf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c index ae120f1735c0..34e5df721430 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -127,7 +127,7 @@ unsigned char *alloc_buffer(size_t buf_size, int memflush) { void *buf = NULL; uint64_t *p64; - size_t s64; + ssize_t s64; int ret; ret = posix_memalign(&buf, PAGE_SIZE, buf_size); -- cgit v1.2.3 From 48ed4e799e8fbebae838dca404a8527763d41191 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:41 -0700 Subject: selftests/resctrl: Protect against array overrun during iMC config parsing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The MBM and MBA tests need to discover the event and umask with which to configure the performance event used to measure read memory bandwidth. This is done by parsing the /sys/bus/event_source/devices/uncore_imc_/events/cas_count_read file for each iMC instance that contains the formatted output: "event=,umask=" Parsing of cas_count_read contents is done by initializing an array of MAX_TOKENS elements with tokens (deliminated by "=,") from this file. Remove the unnecessary append of a delimiter to the string needing to be parsed. Per the strtok() man page: "delimiter bytes at the start or end of the string are ignored". This has no impact on the token placement within the array. After initialization, the actual event and umask is determined by parsing the tokens directly following the "event" and "umask" tokens respectively. Iterating through the array up to index "i < MAX_TOKENS" but then accessing index "i + 1" risks array overrun during the final iteration. Avoid array overrun by ensuring that the index used within for loop will always be valid. Fixes: 1d3f08687d76 ("selftests/resctrl: Read memory bandwidth from perf IMC counter and from resctrl file system") Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/resctrl_val.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 70e8e31f5d1a..e88d5ca30517 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -83,13 +83,12 @@ static void get_event_and_umask(char *cas_count_cfg, int count, bool op) char *token[MAX_TOKENS]; int i = 0; - strcat(cas_count_cfg, ","); token[0] = strtok(cas_count_cfg, "=,"); for (i = 1; i < MAX_TOKENS; i++) token[i] = strtok(NULL, "=,"); - for (i = 0; i < MAX_TOKENS; i++) { + for (i = 0; i < MAX_TOKENS - 1; i++) { if (!token[i]) break; if (strcmp(token[i], "event") == 0) { -- cgit v1.2.3 From 46058430fc5d39c114f7e1b9c6ff14c9f41bd531 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:42 -0700 Subject: selftests/resctrl: Protect against array overflow when reading strings MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit resctrl selftests discover system properties via a variety of sysfs files. The MBM and MBA tests need to discover the event and umask with which to configure the performance event used to measure read memory bandwidth. This is done by parsing the contents of /sys/bus/event_source/devices/uncore_imc_/events/cas_count_read Similarly, the resctrl selftests discover the cache size via /sys/bus/cpu/devices/cpu/cache/index/size. Take care to do bounds checking when using fscanf() to read the contents of files into a string buffer because by default fscanf() assumes arbitrarily long strings. If the file contains more bytes than the array can accommodate then an overflow will occur. Provide a maximum field width to the conversion specifier to protect against array overflow. The maximum is one less than the array size because string input stores a terminating null byte that is not covered by the maximum field width. Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/resctrl_val.c | 4 ++-- tools/testing/selftests/resctrl/resctrlfs.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index e88d5ca30517..c9dd70ce3ea8 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -159,7 +159,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%s", cas_count_cfg) <= 0) { + if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { ksft_perror("Could not get iMC cas count read"); fclose(fp); @@ -177,7 +177,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%s", cas_count_cfg) <= 0) { + if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { ksft_perror("Could not get iMC cas count write"); fclose(fp); diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 250c320349a7..a53cd1cb6e0c 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -182,7 +182,7 @@ int get_cache_size(int cpu_no, const char *cache_type, unsigned long *cache_size return -1; } - if (fscanf(fp, "%s", cache_str) <= 0) { + if (fscanf(fp, "%63s", cache_str) <= 0) { ksft_perror("Could not get cache_size"); fclose(fp); -- cgit v1.2.3 From efffa8c40166af680959c030a815afa8d06af66a Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:43 -0700 Subject: selftests/resctrl: Make wraparound handling obvious MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Within mba_setup() the programmed bandwidth delay value starts at the maximum (100, or rather ALLOCATION_MAX) and progresses towards ALLOCATION_MIN by decrementing with ALLOCATION_STEP. The programmed bandwidth delay should never be negative, so representing it with an unsigned int is most appropriate. This may introduce confusion because of the "allocation > ALLOCATION_MAX" check used to check wraparound of the subtraction. Modify the mba_setup() flow to start at the minimum, ALLOCATION_MIN, and incrementally, with ALLOCATION_STEP steps, adjust the bandwidth delay value. This avoids wraparound while making the purpose of "allocation > ALLOCATION_MAX" clear and eliminates the need for the "allocation < ALLOCATION_MIN" check. Reported-by: Ilpo Järvinen Closes: https://lore.kernel.org/lkml/1903ac13-5c9c-ef8d-78e0-417ac34a971b@linux.intel.com/ Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/mba_test.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index ab8496a4925b..da40a8ed4413 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -39,7 +39,8 @@ static int mba_setup(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *p) { - static int runs_per_allocation, allocation = 100; + static unsigned int allocation = ALLOCATION_MIN; + static int runs_per_allocation; char allocation_str[64]; int ret; @@ -50,7 +51,7 @@ static int mba_setup(const struct resctrl_test *test, if (runs_per_allocation++ != 0) return 0; - if (allocation < ALLOCATION_MIN || allocation > ALLOCATION_MAX) + if (allocation > ALLOCATION_MAX) return END_OF_TESTS; sprintf(allocation_str, "%d", allocation); @@ -59,7 +60,7 @@ static int mba_setup(const struct resctrl_test *test, if (ret < 0) return ret; - allocation -= ALLOCATION_STEP; + allocation += ALLOCATION_STEP; return 0; } @@ -72,8 +73,9 @@ static int mba_measure(const struct user_params *uparams, static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) { - int allocation, runs; + unsigned int allocation; bool ret = false; + int runs; ksft_print_msg("Results are displayed in (MB)\n"); /* Memory bandwidth from 100% down to 10% */ @@ -103,7 +105,7 @@ static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) avg_diff_per > MAX_DIFF_PERCENT ? "Fail:" : "Pass:", MAX_DIFF_PERCENT, - ALLOCATION_MAX - ALLOCATION_STEP * allocation); + ALLOCATION_MIN + ALLOCATION_STEP * allocation); ksft_print_msg("avg_diff_per: %d%%\n", avg_diff_per); ksft_print_msg("avg_bw_imc: %lu\n", avg_bw_imc); -- cgit v1.2.3 From f3069136c95f15c05d166281cbb55f0509a42ae1 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:44 -0700 Subject: selftests/resctrl: Remove "once" parameter required to be false MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The CMT, MBM, and MBA tests rely on a benchmark that runs while the test makes changes to needed configuration (for example memory bandwidth allocation) and takes needed measurements. By default the "fill_buf" benchmark is used and by default (via its "once = false" setting) "fill_buf" is configured to run until terminated after the test completes. An unintended consequence of enabling the user to override the benchmark also enables the user to change parameters to the "fill_buf" benchmark. This enables the user to set "fill_buf" to only cycle through the buffer once (by setting "once = true") and thus breaking the CMT, MBA, and MBM tests that expect workload/interference to be reflected by their measurements. Prevent user space from changing the "once" parameter and ensure that it is always false for the CMT, MBA, and MBM tests. Suggested-by: Ilpo Järvinen Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/fill_buf.c | 7 ++++--- tools/testing/selftests/resctrl/resctrl.h | 2 +- tools/testing/selftests/resctrl/resctrl_tests.c | 9 +++++++-- tools/testing/selftests/resctrl/resctrl_val.c | 11 +---------- 4 files changed, 13 insertions(+), 16 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c index 34e5df721430..854f0108d8e6 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -151,7 +151,7 @@ unsigned char *alloc_buffer(size_t buf_size, int memflush) return buf; } -int run_fill_buf(size_t buf_size, int memflush, int op, bool once) +int run_fill_buf(size_t buf_size, int memflush, int op) { unsigned char *buf; @@ -160,9 +160,10 @@ int run_fill_buf(size_t buf_size, int memflush, int op, bool once) return -1; if (op == 0) - fill_cache_read(buf, buf_size, once); + fill_cache_read(buf, buf_size, false); else - fill_cache_write(buf, buf_size, once); + fill_cache_write(buf, buf_size, false); + free(buf); return 0; diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 2dda56084588..51f5f4b25e06 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -142,7 +142,7 @@ int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, unsigned char *alloc_buffer(size_t buf_size, int memflush); void mem_flush(unsigned char *buf, size_t buf_size); void fill_cache_read(unsigned char *buf, size_t buf_size, bool once); -int run_fill_buf(size_t buf_size, int memflush, int op, bool once); +int run_fill_buf(size_t buf_size, int memflush, int op); int initialize_mem_bw_imc(void); int measure_mem_bw(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid, diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c index ecbb7605a981..e7878077883f 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -266,8 +266,13 @@ last_arg: uparams.benchmark_cmd[1] = span_str; uparams.benchmark_cmd[2] = "1"; uparams.benchmark_cmd[3] = "0"; - uparams.benchmark_cmd[4] = "false"; - uparams.benchmark_cmd[5] = NULL; + /* + * Fourth parameter was previously used to indicate + * how long "fill_buf" should run for, with "false" + * ("fill_buf" will keep running until terminated) + * the only option that works. + */ + uparams.benchmark_cmd[4] = NULL; } ksft_set_plan(tests); diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index c9dd70ce3ea8..b0f3c594c4da 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -625,7 +625,6 @@ static void run_benchmark(int signum, siginfo_t *info, void *ucontext) int operation, ret, memflush; char **benchmark_cmd; size_t span; - bool once; FILE *fp; benchmark_cmd = info->si_ptr; @@ -645,16 +644,8 @@ static void run_benchmark(int signum, siginfo_t *info, void *ucontext) span = strtoul(benchmark_cmd[1], NULL, 10); memflush = atoi(benchmark_cmd[2]); operation = atoi(benchmark_cmd[3]); - if (!strcmp(benchmark_cmd[4], "true")) { - once = true; - } else if (!strcmp(benchmark_cmd[4], "false")) { - once = false; - } else { - ksft_print_msg("Invalid once parameter\n"); - parent_exit(ppid); - } - if (run_fill_buf(span, memflush, operation, once)) + if (run_fill_buf(span, memflush, operation)) fprintf(stderr, "Error in running fill buffer\n"); } else { /* Execute specified benchmark */ -- cgit v1.2.3 From 138424170eb06c956bc7e77e8740479161f65463 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:45 -0700 Subject: selftests/resctrl: Only support measured read operation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The CMT, MBM, and MBA tests rely on a benchmark to generate memory traffic. By default this is the "fill_buf" benchmark that can be replaced via the "-b" command line argument. The original intent of the "-b" command line parameter was to replace the default "fill_buf" benchmark, but the implementation also exposes an alternative use case where the "fill_buf" parameters itself can be modified. One of the parameters to "fill_buf" is the "operation" that can be either "read" or "write" and indicates whether the "fill_buf" should use "read" or "write" operations on the allocated buffer. While replacing "fill_buf" default parameters is technically possible, replacing the default "read" parameter with "write" is not supported because the MBA and MBM tests only measure "read" operations. The "read" operation is also most appropriate for the CMT test that aims to use the benchmark to allocate into the cache. Avoid any potential inconsistencies between test and measurement by removing code for unsupported "write" operations to the buffer. Ignore any attempt from user space to enable this unsupported test configuration, instead always use read operations. Keep the initialization of the, now unused, "fill_buf" parameters to reserve these parameter positions since it has been exposed as an API. Future parameter additions cannot use these parameter positions. Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/fill_buf.c | 28 ++----------------------- tools/testing/selftests/resctrl/resctrl.h | 2 +- tools/testing/selftests/resctrl/resctrl_tests.c | 5 ++++- tools/testing/selftests/resctrl/resctrl_val.c | 5 ++--- 4 files changed, 9 insertions(+), 31 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c index 854f0108d8e6..e4f1cea317f1 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -88,18 +88,6 @@ static int fill_one_span_read(unsigned char *buf, size_t buf_size) return sum; } -static void fill_one_span_write(unsigned char *buf, size_t buf_size) -{ - unsigned char *end_ptr = buf + buf_size; - unsigned char *p; - - p = buf; - while (p < end_ptr) { - *p = '1'; - p += (CL_SIZE / 2); - } -} - void fill_cache_read(unsigned char *buf, size_t buf_size, bool once) { int ret = 0; @@ -114,15 +102,6 @@ void fill_cache_read(unsigned char *buf, size_t buf_size, bool once) *value_sink = ret; } -static void fill_cache_write(unsigned char *buf, size_t buf_size, bool once) -{ - while (1) { - fill_one_span_write(buf, buf_size); - if (once) - break; - } -} - unsigned char *alloc_buffer(size_t buf_size, int memflush) { void *buf = NULL; @@ -151,7 +130,7 @@ unsigned char *alloc_buffer(size_t buf_size, int memflush) return buf; } -int run_fill_buf(size_t buf_size, int memflush, int op) +int run_fill_buf(size_t buf_size, int memflush) { unsigned char *buf; @@ -159,10 +138,7 @@ int run_fill_buf(size_t buf_size, int memflush, int op) if (!buf) return -1; - if (op == 0) - fill_cache_read(buf, buf_size, false); - else - fill_cache_write(buf, buf_size, false); + fill_cache_read(buf, buf_size, false); free(buf); diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 51f5f4b25e06..ba1ce1b35699 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -142,7 +142,7 @@ int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, unsigned char *alloc_buffer(size_t buf_size, int memflush); void mem_flush(unsigned char *buf, size_t buf_size); void fill_cache_read(unsigned char *buf, size_t buf_size, bool once); -int run_fill_buf(size_t buf_size, int memflush, int op); +int run_fill_buf(size_t buf_size, int memflush); int initialize_mem_bw_imc(void); int measure_mem_bw(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid, diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c index e7878077883f..0f91c475b255 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -265,13 +265,16 @@ last_arg: ksft_exit_fail_msg("Out of memory!\n"); uparams.benchmark_cmd[1] = span_str; uparams.benchmark_cmd[2] = "1"; - uparams.benchmark_cmd[3] = "0"; /* + * Third parameter was previously used for "operation" + * (read/write) of which only (now default) "read"/"0" + * works. * Fourth parameter was previously used to indicate * how long "fill_buf" should run for, with "false" * ("fill_buf" will keep running until terminated) * the only option that works. */ + uparams.benchmark_cmd[3] = NULL; uparams.benchmark_cmd[4] = NULL; } diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index b0f3c594c4da..113ca18d67c1 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -622,8 +622,8 @@ close_fp: */ static void run_benchmark(int signum, siginfo_t *info, void *ucontext) { - int operation, ret, memflush; char **benchmark_cmd; + int ret, memflush; size_t span; FILE *fp; @@ -643,9 +643,8 @@ static void run_benchmark(int signum, siginfo_t *info, void *ucontext) /* Execute default fill_buf benchmark */ span = strtoul(benchmark_cmd[1], NULL, 10); memflush = atoi(benchmark_cmd[2]); - operation = atoi(benchmark_cmd[3]); - if (run_fill_buf(span, memflush, operation)) + if (run_fill_buf(span, memflush)) fprintf(stderr, "Error in running fill buffer\n"); } else { /* Execute specified benchmark */ -- cgit v1.2.3 From 76f8f009f6bc89fd08edae69ccc705a9781fe42e Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:46 -0700 Subject: selftests/resctrl: Remove unused measurement code MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The MBM and MBA resctrl selftests run a benchmark during which it takes measurements of read memory bandwidth via perf. Code exists to support measurements of write memory bandwidth but there exists no path with which this code can execute. While code exists for write memory bandwidth measurement there has not yet been a use case for it. Remove this unused code. Rename relevant functions to include "read" so that it is clear that it relates only to memory bandwidth reads, while renaming the functions also add consistency by changing the "membw" instances to more prevalent "mem_bw". Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/mba_test.c | 4 +- tools/testing/selftests/resctrl/mbm_test.c | 4 +- tools/testing/selftests/resctrl/resctrl.h | 8 +- tools/testing/selftests/resctrl/resctrl_val.c | 234 +++++++++----------------- tools/testing/selftests/resctrl/resctrlfs.c | 17 -- 5 files changed, 85 insertions(+), 182 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index da40a8ed4413..be0ead73e55d 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -21,7 +21,7 @@ static int mba_init(const struct resctrl_val_param *param, int domain_id) { int ret; - ret = initialize_mem_bw_imc(); + ret = initialize_read_mem_bw_imc(); if (ret) return ret; @@ -68,7 +68,7 @@ static int mba_setup(const struct resctrl_test *test, static int mba_measure(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid) { - return measure_mem_bw(uparams, param, bm_pid, "reads"); + return measure_read_mem_bw(uparams, param, bm_pid); } static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index cf08ba5e314e..defa94293915 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -91,7 +91,7 @@ static int mbm_init(const struct resctrl_val_param *param, int domain_id) { int ret; - ret = initialize_mem_bw_imc(); + ret = initialize_read_mem_bw_imc(); if (ret) return ret; @@ -122,7 +122,7 @@ static int mbm_setup(const struct resctrl_test *test, static int mbm_measure(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid) { - return measure_mem_bw(uparams, param, bm_pid, "reads"); + return measure_read_mem_bw(uparams, param, bm_pid); } static void mbm_test_cleanup(void) diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index ba1ce1b35699..82801245e4c1 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -126,7 +126,6 @@ int filter_dmesg(void); int get_domain_id(const char *resource, int cpu_no, int *domain_id); int mount_resctrlfs(void); int umount_resctrlfs(void); -const char *get_bw_report_type(const char *bw_report); bool resctrl_resource_exists(const char *resource); bool resctrl_mon_feature_exists(const char *resource, const char *feature); bool resource_info_file_exists(const char *resource, const char *file); @@ -143,10 +142,9 @@ unsigned char *alloc_buffer(size_t buf_size, int memflush); void mem_flush(unsigned char *buf, size_t buf_size); void fill_cache_read(unsigned char *buf, size_t buf_size, bool once); int run_fill_buf(size_t buf_size, int memflush); -int initialize_mem_bw_imc(void); -int measure_mem_bw(const struct user_params *uparams, - struct resctrl_val_param *param, pid_t bm_pid, - const char *bw_report); +int initialize_read_mem_bw_imc(void); +int measure_read_mem_bw(const struct user_params *uparams, + struct resctrl_val_param *param, pid_t bm_pid); void initialize_mem_bw_resctrl(const struct resctrl_val_param *param, int domain_id); int resctrl_val(const struct resctrl_test *test, diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 113ca18d67c1..c4ebf70a46ef 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -12,13 +12,10 @@ #define UNCORE_IMC "uncore_imc" #define READ_FILE_NAME "events/cas_count_read" -#define WRITE_FILE_NAME "events/cas_count_write" #define DYN_PMU_PATH "/sys/bus/event_source/devices" #define SCALE 0.00006103515625 #define MAX_IMCS 20 #define MAX_TOKENS 5 -#define READ 0 -#define WRITE 1 #define CON_MBM_LOCAL_BYTES_PATH \ "%s/%s/mon_data/mon_L3_%02d/mbm_local_bytes" @@ -41,44 +38,43 @@ struct imc_counter_config { static char mbm_total_path[1024]; static int imcs; -static struct imc_counter_config imc_counters_config[MAX_IMCS][2]; +static struct imc_counter_config imc_counters_config[MAX_IMCS]; static const struct resctrl_test *current_test; -static void membw_initialize_perf_event_attr(int i, int j) +static void read_mem_bw_initialize_perf_event_attr(int i) { - memset(&imc_counters_config[i][j].pe, 0, + memset(&imc_counters_config[i].pe, 0, sizeof(struct perf_event_attr)); - imc_counters_config[i][j].pe.type = imc_counters_config[i][j].type; - imc_counters_config[i][j].pe.size = sizeof(struct perf_event_attr); - imc_counters_config[i][j].pe.disabled = 1; - imc_counters_config[i][j].pe.inherit = 1; - imc_counters_config[i][j].pe.exclude_guest = 0; - imc_counters_config[i][j].pe.config = - imc_counters_config[i][j].umask << 8 | - imc_counters_config[i][j].event; - imc_counters_config[i][j].pe.sample_type = PERF_SAMPLE_IDENTIFIER; - imc_counters_config[i][j].pe.read_format = + imc_counters_config[i].pe.type = imc_counters_config[i].type; + imc_counters_config[i].pe.size = sizeof(struct perf_event_attr); + imc_counters_config[i].pe.disabled = 1; + imc_counters_config[i].pe.inherit = 1; + imc_counters_config[i].pe.exclude_guest = 0; + imc_counters_config[i].pe.config = + imc_counters_config[i].umask << 8 | + imc_counters_config[i].event; + imc_counters_config[i].pe.sample_type = PERF_SAMPLE_IDENTIFIER; + imc_counters_config[i].pe.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_TOTAL_TIME_RUNNING; } -static void membw_ioctl_perf_event_ioc_reset_enable(int i, int j) +static void read_mem_bw_ioctl_perf_event_ioc_reset_enable(int i) { - ioctl(imc_counters_config[i][j].fd, PERF_EVENT_IOC_RESET, 0); - ioctl(imc_counters_config[i][j].fd, PERF_EVENT_IOC_ENABLE, 0); + ioctl(imc_counters_config[i].fd, PERF_EVENT_IOC_RESET, 0); + ioctl(imc_counters_config[i].fd, PERF_EVENT_IOC_ENABLE, 0); } -static void membw_ioctl_perf_event_ioc_disable(int i, int j) +static void read_mem_bw_ioctl_perf_event_ioc_disable(int i) { - ioctl(imc_counters_config[i][j].fd, PERF_EVENT_IOC_DISABLE, 0); + ioctl(imc_counters_config[i].fd, PERF_EVENT_IOC_DISABLE, 0); } /* - * get_event_and_umask: Parse config into event and umask + * get_read_event_and_umask: Parse config into event and umask * @cas_count_cfg: Config * @count: iMC number - * @op: Operation (read/write) */ -static void get_event_and_umask(char *cas_count_cfg, int count, bool op) +static void get_read_event_and_umask(char *cas_count_cfg, int count) { char *token[MAX_TOKENS]; int i = 0; @@ -91,34 +87,22 @@ static void get_event_and_umask(char *cas_count_cfg, int count, bool op) for (i = 0; i < MAX_TOKENS - 1; i++) { if (!token[i]) break; - if (strcmp(token[i], "event") == 0) { - if (op == READ) - imc_counters_config[count][READ].event = - strtol(token[i + 1], NULL, 16); - else - imc_counters_config[count][WRITE].event = - strtol(token[i + 1], NULL, 16); - } - if (strcmp(token[i], "umask") == 0) { - if (op == READ) - imc_counters_config[count][READ].umask = - strtol(token[i + 1], NULL, 16); - else - imc_counters_config[count][WRITE].umask = - strtol(token[i + 1], NULL, 16); - } + if (strcmp(token[i], "event") == 0) + imc_counters_config[count].event = strtol(token[i + 1], NULL, 16); + if (strcmp(token[i], "umask") == 0) + imc_counters_config[count].umask = strtol(token[i + 1], NULL, 16); } } -static int open_perf_event(int i, int cpu_no, int j) +static int open_perf_read_event(int i, int cpu_no) { - imc_counters_config[i][j].fd = - perf_event_open(&imc_counters_config[i][j].pe, -1, cpu_no, -1, + imc_counters_config[i].fd = + perf_event_open(&imc_counters_config[i].pe, -1, cpu_no, -1, PERF_FLAG_FD_CLOEXEC); - if (imc_counters_config[i][j].fd == -1) { + if (imc_counters_config[i].fd == -1) { fprintf(stderr, "Error opening leader %llx\n", - imc_counters_config[i][j].pe.config); + imc_counters_config[i].pe.config); return -1; } @@ -126,7 +110,7 @@ static int open_perf_event(int i, int cpu_no, int j) return 0; } -/* Get type and config (read and write) of an iMC counter */ +/* Get type and config of an iMC counter's read event. */ static int read_from_imc_dir(char *imc_dir, int count) { char cas_count_cfg[1024], imc_counter_cfg[1024], imc_counter_type[1024]; @@ -140,7 +124,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%u", &imc_counters_config[count][READ].type) <= 0) { + if (fscanf(fp, "%u", &imc_counters_config[count].type) <= 0) { ksft_perror("Could not get iMC type"); fclose(fp); @@ -148,9 +132,6 @@ static int read_from_imc_dir(char *imc_dir, int count) } fclose(fp); - imc_counters_config[count][WRITE].type = - imc_counters_config[count][READ].type; - /* Get read config */ sprintf(imc_counter_cfg, "%s%s", imc_dir, READ_FILE_NAME); fp = fopen(imc_counter_cfg, "r"); @@ -167,34 +148,19 @@ static int read_from_imc_dir(char *imc_dir, int count) } fclose(fp); - get_event_and_umask(cas_count_cfg, count, READ); - - /* Get write config */ - sprintf(imc_counter_cfg, "%s%s", imc_dir, WRITE_FILE_NAME); - fp = fopen(imc_counter_cfg, "r"); - if (!fp) { - ksft_perror("Failed to open iMC config file"); - - return -1; - } - if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { - ksft_perror("Could not get iMC cas count write"); - fclose(fp); - - return -1; - } - fclose(fp); - - get_event_and_umask(cas_count_cfg, count, WRITE); + get_read_event_and_umask(cas_count_cfg, count); return 0; } /* * A system can have 'n' number of iMC (Integrated Memory Controller) - * counters, get that 'n'. For each iMC counter get it's type and config. - * Also, each counter has two configs, one for read and the other for write. - * A config again has two parts, event and umask. + * counters, get that 'n'. Discover the properties of the available + * counters in support of needed performance measurement via perf. + * For each iMC counter get it's type and config. Also obtain each + * counter's event and umask for the memory read events that will be + * measured. + * * Enumerate all these details into an array of structures. * * Return: >= 0 on success. < 0 on failure. @@ -255,55 +221,46 @@ static int num_of_imcs(void) return count; } -int initialize_mem_bw_imc(void) +int initialize_read_mem_bw_imc(void) { - int imc, j; + int imc; imcs = num_of_imcs(); if (imcs <= 0) return imcs; /* Initialize perf_event_attr structures for all iMC's */ - for (imc = 0; imc < imcs; imc++) { - for (j = 0; j < 2; j++) - membw_initialize_perf_event_attr(imc, j); - } + for (imc = 0; imc < imcs; imc++) + read_mem_bw_initialize_perf_event_attr(imc); return 0; } -static void perf_close_imc_mem_bw(void) +static void perf_close_imc_read_mem_bw(void) { int mc; for (mc = 0; mc < imcs; mc++) { - if (imc_counters_config[mc][READ].fd != -1) - close(imc_counters_config[mc][READ].fd); - if (imc_counters_config[mc][WRITE].fd != -1) - close(imc_counters_config[mc][WRITE].fd); + if (imc_counters_config[mc].fd != -1) + close(imc_counters_config[mc].fd); } } /* - * perf_open_imc_mem_bw - Open perf fds for IMCs + * perf_open_imc_read_mem_bw - Open perf fds for IMCs * @cpu_no: CPU number that the benchmark PID is bound to * * Return: = 0 on success. < 0 on failure. */ -static int perf_open_imc_mem_bw(int cpu_no) +static int perf_open_imc_read_mem_bw(int cpu_no) { int imc, ret; - for (imc = 0; imc < imcs; imc++) { - imc_counters_config[imc][READ].fd = -1; - imc_counters_config[imc][WRITE].fd = -1; - } + for (imc = 0; imc < imcs; imc++) + imc_counters_config[imc].fd = -1; for (imc = 0; imc < imcs; imc++) { - ret = open_perf_event(imc, cpu_no, READ); - if (ret) - goto close_fds; - ret = open_perf_event(imc, cpu_no, WRITE); + ret = open_perf_read_event(imc, cpu_no); if (ret) goto close_fds; } @@ -311,60 +268,52 @@ static int perf_open_imc_mem_bw(int cpu_no) return 0; close_fds: - perf_close_imc_mem_bw(); + perf_close_imc_read_mem_bw(); return -1; } /* - * do_mem_bw_test - Perform memory bandwidth test + * do_imc_read_mem_bw_test - Perform memory bandwidth test * * Runs memory bandwidth test over one second period. Also, handles starting * and stopping of the IMC perf counters around the test. */ -static void do_imc_mem_bw_test(void) +static void do_imc_read_mem_bw_test(void) { int imc; - for (imc = 0; imc < imcs; imc++) { - membw_ioctl_perf_event_ioc_reset_enable(imc, READ); - membw_ioctl_perf_event_ioc_reset_enable(imc, WRITE); - } + for (imc = 0; imc < imcs; imc++) + read_mem_bw_ioctl_perf_event_ioc_reset_enable(imc); sleep(1); - /* Stop counters after a second to get results (both read and write) */ - for (imc = 0; imc < imcs; imc++) { - membw_ioctl_perf_event_ioc_disable(imc, READ); - membw_ioctl_perf_event_ioc_disable(imc, WRITE); - } + /* Stop counters after a second to get results. */ + for (imc = 0; imc < imcs; imc++) + read_mem_bw_ioctl_perf_event_ioc_disable(imc); } /* - * get_mem_bw_imc - Memory bandwidth as reported by iMC counters - * @bw_report: Bandwidth report type (reads, writes) + * get_read_mem_bw_imc - Memory read bandwidth as reported by iMC counters * - * Memory bandwidth utilized by a process on a socket can be calculated - * using iMC counters. Perf events are used to read these counters. + * Memory read bandwidth utilized by a process on a socket can be calculated + * using iMC counters' read events. Perf events are used to read these + * counters. * * Return: = 0 on success. < 0 on failure. */ -static int get_mem_bw_imc(const char *bw_report, float *bw_imc) +static int get_read_mem_bw_imc(float *bw_imc) { - float reads, writes, of_mul_read, of_mul_write; + float reads = 0, of_mul_read = 1; int imc; - /* Start all iMC counters to log values (both read and write) */ - reads = 0, writes = 0, of_mul_read = 1, of_mul_write = 1; - /* - * Get results which are stored in struct type imc_counter_config + * Log read event values from all iMC counters into + * struct imc_counter_config. * Take overflow into consideration before calculating total bandwidth. */ for (imc = 0; imc < imcs; imc++) { struct imc_counter_config *r = - &imc_counters_config[imc][READ]; - struct imc_counter_config *w = - &imc_counters_config[imc][WRITE]; + &imc_counters_config[imc]; if (read(r->fd, &r->return_value, sizeof(struct membw_read_format)) == -1) { @@ -372,12 +321,6 @@ static int get_mem_bw_imc(const char *bw_report, float *bw_imc) return -1; } - if (read(w->fd, &w->return_value, - sizeof(struct membw_read_format)) == -1) { - ksft_perror("Couldn't get write bandwidth through iMC"); - return -1; - } - __u64 r_time_enabled = r->return_value.time_enabled; __u64 r_time_running = r->return_value.time_running; @@ -385,27 +328,10 @@ static int get_mem_bw_imc(const char *bw_report, float *bw_imc) of_mul_read = (float)r_time_enabled / (float)r_time_running; - __u64 w_time_enabled = w->return_value.time_enabled; - __u64 w_time_running = w->return_value.time_running; - - if (w_time_enabled != w_time_running) - of_mul_write = (float)w_time_enabled / - (float)w_time_running; reads += r->return_value.value * of_mul_read * SCALE; - writes += w->return_value.value * of_mul_write * SCALE; - } - - if (strcmp(bw_report, "reads") == 0) { - *bw_imc = reads; - return 0; - } - - if (strcmp(bw_report, "writes") == 0) { - *bw_imc = writes; - return 0; } - *bw_imc = reads + writes; + *bw_imc = reads; return 0; } @@ -551,35 +477,31 @@ static int print_results_bw(char *filename, pid_t bm_pid, float bw_imc, } /* - * measure_mem_bw - Measures memory bandwidth numbers while benchmark runs + * measure_read_mem_bw - Measures read memory bandwidth numbers while benchmark runs * @uparams: User supplied parameters * @param: Parameters passed to resctrl_val() * @bm_pid: PID that runs the benchmark - * @bw_report: Bandwidth report type (reads, writes) * * Measure memory bandwidth from resctrl and from another source which is * perf imc value or could be something else if perf imc event is not * available. Compare the two values to validate resctrl value. It takes * 1 sec to measure the data. + * resctrl does not distinguish between read and write operations so + * its data includes all memory operations. */ -int measure_mem_bw(const struct user_params *uparams, - struct resctrl_val_param *param, pid_t bm_pid, - const char *bw_report) +int measure_read_mem_bw(const struct user_params *uparams, + struct resctrl_val_param *param, pid_t bm_pid) { unsigned long bw_resc, bw_resc_start, bw_resc_end; FILE *mem_bw_fp; float bw_imc; int ret; - bw_report = get_bw_report_type(bw_report); - if (!bw_report) - return -1; - mem_bw_fp = open_mem_bw_resctrl(mbm_total_path); if (!mem_bw_fp) return -1; - ret = perf_open_imc_mem_bw(uparams->cpu); + ret = perf_open_imc_read_mem_bw(uparams->cpu); if (ret < 0) goto close_fp; @@ -589,17 +511,17 @@ int measure_mem_bw(const struct user_params *uparams, rewind(mem_bw_fp); - do_imc_mem_bw_test(); + do_imc_read_mem_bw_test(); ret = get_mem_bw_resctrl(mem_bw_fp, &bw_resc_end); if (ret < 0) goto close_imc; - ret = get_mem_bw_imc(bw_report, &bw_imc); + ret = get_read_mem_bw_imc(&bw_imc); if (ret < 0) goto close_imc; - perf_close_imc_mem_bw(); + perf_close_imc_read_mem_bw(); fclose(mem_bw_fp); bw_resc = (bw_resc_end - bw_resc_start) / MB; @@ -607,7 +529,7 @@ int measure_mem_bw(const struct user_params *uparams, return print_results_bw(param->filename, bm_pid, bw_imc, bw_resc); close_imc: - perf_close_imc_mem_bw(); + perf_close_imc_read_mem_bw(); close_fp: fclose(mem_bw_fp); return ret; diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index a53cd1cb6e0c..d38d6dd90be4 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -831,23 +831,6 @@ int filter_dmesg(void) return 0; } -const char *get_bw_report_type(const char *bw_report) -{ - if (strcmp(bw_report, "reads") == 0) - return bw_report; - if (strcmp(bw_report, "writes") == 0) - return bw_report; - if (strcmp(bw_report, "nt-writes") == 0) { - return "writes"; - } - if (strcmp(bw_report, "total") == 0) - return bw_report; - - fprintf(stderr, "Requested iMC bandwidth report type unavailable\n"); - - return NULL; -} - int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, int group_fd, unsigned long flags) { -- cgit v1.2.3 From e958c21e2edecd17c87c4a2df39d1e47a3f7c039 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:47 -0700 Subject: selftests/resctrl: Make benchmark parameter passing robust MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The benchmark used during the CMT, MBM, and MBA tests can be provided by the user via (-b) parameter, if not provided the default "fill_buf" benchmark is used. The user is additionally able to override any of the "fill_buf" default parameters when running the tests with "-b fill_buf ". The "fill_buf" parameters are managed as an array of strings. Using an array of strings is complex because it requires transformations to/from strings at every producer and consumer. This is made worse for the individual tests where the default benchmark parameters values may not be appropriate and additional data wrangling is required. For example, the CMT test duplicates the entire array of strings in order to replace one of the parameters. More issues appear when combining the usage of an array of strings with the use case of user overriding default parameters by specifying "-b fill_buf ". This use case is fragile with opportunities to trigger a SIGSEGV because of opportunities for NULL pointers to exist in the array of strings. For example, by running below (thus by specifying "fill_buf" should be used but all parameters are NULL): $ sudo resctrl_tests -t mbm -b fill_buf Replace the "array of strings" parameters used for "fill_buf" with new struct fill_buf_param that contains the "fill_buf" parameters that can be used directly without transformations to/from strings. Two instances of struct fill_buf_param may exist at any point in time: * If the user provides new parameters to "fill_buf", the user parameter structure (struct user_params) will point to a fully initialized and immutable struct fill_buf_param containing the user provided parameters. * If "fill_buf" is the benchmark that should be used by a test, then the test parameter structure (struct resctrl_val_param) will point to a fully initialized struct fill_buf_param. The latter may contain (a) the user provided parameters verbatim, (b) user provided parameters adjusted to be appropriate for the test, or (c) the default parameters for "fill_buf" that is appropriate for the test if the user did not provide "fill_buf" parameters nor an alternate benchmark. The existing behavior of CMT test is to use test defined value for the buffer size even if the user provides another value via command line. This behavior is maintained since the test requires that the buffer size matches the size of the cache allocated, and the amount of cache allocated can instead be changed by the user with the "-n" command line parameter. Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/cmt_test.c | 32 +++----- tools/testing/selftests/resctrl/fill_buf.c | 4 +- tools/testing/selftests/resctrl/mba_test.c | 13 ++- tools/testing/selftests/resctrl/mbm_test.c | 22 ++--- tools/testing/selftests/resctrl/resctrl.h | 59 ++++++++++---- tools/testing/selftests/resctrl/resctrl_tests.c | 103 ++++++++++++++++++------ tools/testing/selftests/resctrl/resctrl_val.c | 41 +++++----- 7 files changed, 178 insertions(+), 96 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index 0c045080d808..4c3cf2c25a38 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -116,15 +116,13 @@ static void cmt_test_cleanup(void) static int cmt_run_test(const struct resctrl_test *test, const struct user_params *uparams) { - const char * const *cmd = uparams->benchmark_cmd; - const char *new_cmd[BENCHMARK_ARGS]; + struct fill_buf_param fill_buf = {}; unsigned long cache_total_size = 0; int n = uparams->bits ? : 5; unsigned long long_mask; - char *span_str = NULL; int count_of_bits; size_t span; - int ret, i; + int ret; ret = get_full_cbm("L3", &long_mask); if (ret) @@ -155,32 +153,26 @@ static int cmt_run_test(const struct resctrl_test *test, const struct user_param span = cache_portion_size(cache_total_size, param.mask, long_mask); - if (strcmp(cmd[0], "fill_buf") == 0) { - /* Duplicate the command to be able to replace span in it */ - for (i = 0; uparams->benchmark_cmd[i]; i++) - new_cmd[i] = uparams->benchmark_cmd[i]; - new_cmd[i] = NULL; - - ret = asprintf(&span_str, "%zu", span); - if (ret < 0) - return -1; - new_cmd[1] = span_str; - cmd = new_cmd; + if (uparams->fill_buf) { + fill_buf.buf_size = span; + fill_buf.memflush = uparams->fill_buf->memflush; + param.fill_buf = &fill_buf; + } else if (!uparams->benchmark_cmd[0]) { + fill_buf.buf_size = span; + fill_buf.memflush = true; + param.fill_buf = &fill_buf; } remove(RESULT_FILE_NAME); - ret = resctrl_val(test, uparams, cmd, ¶m); + ret = resctrl_val(test, uparams, ¶m); if (ret) - goto out; + return ret; ret = check_results(¶m, span, n); if (ret && (get_vendor() == ARCH_INTEL)) ksft_print_msg("Intel CMT may be inaccurate when Sub-NUMA Clustering is enabled. Check BIOS configuration.\n"); -out: - free(span_str); - return ret; } diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c index e4f1cea317f1..39545f9369e8 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -102,7 +102,7 @@ void fill_cache_read(unsigned char *buf, size_t buf_size, bool once) *value_sink = ret; } -unsigned char *alloc_buffer(size_t buf_size, int memflush) +unsigned char *alloc_buffer(size_t buf_size, bool memflush) { void *buf = NULL; uint64_t *p64; @@ -130,7 +130,7 @@ unsigned char *alloc_buffer(size_t buf_size, int memflush) return buf; } -int run_fill_buf(size_t buf_size, int memflush) +int run_fill_buf(size_t buf_size, bool memflush) { unsigned char *buf; diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index be0ead73e55d..74d95c460bd0 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -172,11 +172,22 @@ static int mba_run_test(const struct resctrl_test *test, const struct user_param .setup = mba_setup, .measure = mba_measure, }; + struct fill_buf_param fill_buf = {}; int ret; remove(RESULT_FILE_NAME); - ret = resctrl_val(test, uparams, uparams->benchmark_cmd, ¶m); + if (uparams->fill_buf) { + fill_buf.buf_size = uparams->fill_buf->buf_size; + fill_buf.memflush = uparams->fill_buf->memflush; + param.fill_buf = &fill_buf; + } else if (!uparams->benchmark_cmd[0]) { + fill_buf.buf_size = DEFAULT_SPAN; + fill_buf.memflush = true; + param.fill_buf = &fill_buf; + } + + ret = resctrl_val(test, uparams, ¶m); if (ret) return ret; diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index defa94293915..72261413c868 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -139,26 +139,26 @@ static int mbm_run_test(const struct resctrl_test *test, const struct user_param .setup = mbm_setup, .measure = mbm_measure, }; - char *endptr = NULL; - size_t span = 0; + struct fill_buf_param fill_buf = {}; int ret; remove(RESULT_FILE_NAME); - if (uparams->benchmark_cmd[0] && strcmp(uparams->benchmark_cmd[0], "fill_buf") == 0) { - if (uparams->benchmark_cmd[1] && *uparams->benchmark_cmd[1] != '\0') { - errno = 0; - span = strtoul(uparams->benchmark_cmd[1], &endptr, 10); - if (errno || *endptr != '\0') - return -EINVAL; - } + if (uparams->fill_buf) { + fill_buf.buf_size = uparams->fill_buf->buf_size; + fill_buf.memflush = uparams->fill_buf->memflush; + param.fill_buf = &fill_buf; + } else if (!uparams->benchmark_cmd[0]) { + fill_buf.buf_size = DEFAULT_SPAN; + fill_buf.memflush = true; + param.fill_buf = &fill_buf; } - ret = resctrl_val(test, uparams, uparams->benchmark_cmd, ¶m); + ret = resctrl_val(test, uparams, ¶m); if (ret) return ret; - ret = check_results(span); + ret = check_results(param.fill_buf ? param.fill_buf->buf_size : 0); if (ret && (get_vendor() == ARCH_INTEL)) ksft_print_msg("Intel MBM may be inaccurate when Sub-NUMA Clustering is enabled. Check BIOS configuration.\n"); diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 82801245e4c1..c9336f9c2cae 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -43,16 +43,36 @@ #define DEFAULT_SPAN (250 * MB) +/* + * fill_buf_param: "fill_buf" benchmark parameters + * @buf_size: Size (in bytes) of buffer used in benchmark. + * "fill_buf" allocates and initializes buffer of + * @buf_size. User can change value via command line. + * @memflush: If false the buffer will not be flushed after + * allocation and initialization, otherwise the + * buffer will be flushed. User can change value via + * command line (via integers with 0 interpreted as + * false and anything else as true). + */ +struct fill_buf_param { + size_t buf_size; + bool memflush; +}; + /* * user_params: User supplied parameters * @cpu: CPU number to which the benchmark will be bound to * @bits: Number of bits used for cache allocation size * @benchmark_cmd: Benchmark command to run during (some of the) tests + * @fill_buf: Pointer to user provided parameters for "fill_buf", + * NULL if user did not provide parameters and test + * specific defaults should be used. */ struct user_params { int cpu; int bits; const char *benchmark_cmd[BENCHMARK_ARGS]; + const struct fill_buf_param *fill_buf; }; /* @@ -87,21 +107,29 @@ struct resctrl_test { * @init: Callback function to initialize test environment * @setup: Callback function to setup per test run environment * @measure: Callback that performs the measurement (a single test) + * @fill_buf: Parameters for default "fill_buf" benchmark. + * Initialized with user provided parameters, possibly + * adapted to be relevant to the test. If user does + * not provide parameters for "fill_buf" nor a + * replacement benchmark then initialized with defaults + * appropriate for test. NULL if user provided + * benchmark. */ struct resctrl_val_param { - const char *ctrlgrp; - const char *mongrp; - char filename[64]; - unsigned long mask; - int num_of_runs; - int (*init)(const struct resctrl_val_param *param, - int domain_id); - int (*setup)(const struct resctrl_test *test, - const struct user_params *uparams, - struct resctrl_val_param *param); - int (*measure)(const struct user_params *uparams, - struct resctrl_val_param *param, - pid_t bm_pid); + const char *ctrlgrp; + const char *mongrp; + char filename[64]; + unsigned long mask; + int num_of_runs; + int (*init)(const struct resctrl_val_param *param, + int domain_id); + int (*setup)(const struct resctrl_test *test, + const struct user_params *uparams, + struct resctrl_val_param *param); + int (*measure)(const struct user_params *uparams, + struct resctrl_val_param *param, + pid_t bm_pid); + struct fill_buf_param *fill_buf; }; struct perf_event_read { @@ -138,10 +166,10 @@ int write_schemata(const char *ctrlgrp, char *schemata, int cpu_no, int write_bm_pid_to_resctrl(pid_t bm_pid, const char *ctrlgrp, const char *mongrp); int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, int group_fd, unsigned long flags); -unsigned char *alloc_buffer(size_t buf_size, int memflush); +unsigned char *alloc_buffer(size_t buf_size, bool memflush); void mem_flush(unsigned char *buf, size_t buf_size); void fill_cache_read(unsigned char *buf, size_t buf_size, bool once); -int run_fill_buf(size_t buf_size, int memflush); +int run_fill_buf(size_t buf_size, bool memflush); int initialize_read_mem_bw_imc(void); int measure_read_mem_bw(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid); @@ -149,7 +177,6 @@ void initialize_mem_bw_resctrl(const struct resctrl_val_param *param, int domain_id); int resctrl_val(const struct resctrl_test *test, const struct user_params *uparams, - const char * const *benchmark_cmd, struct resctrl_val_param *param); unsigned long create_bit_mask(unsigned int start, unsigned int len); unsigned int count_contiguous_bits(unsigned long val, unsigned int *start); diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c index 0f91c475b255..24daf76b4039 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -148,6 +148,78 @@ cleanup: test_cleanup(test); } +/* + * Allocate and initialize a struct fill_buf_param with user provided + * (via "-b fill_buf ") parameters. + * + * Use defaults (that may not be appropriate for all tests) for any + * fill_buf parameters omitted by the user. + * + * Historically it may have been possible for user space to provide + * additional parameters, "operation" ("read" vs "write") in + * benchmark_cmd[3] and "once" (run "once" or until terminated) in + * benchmark_cmd[4]. Changing these parameters have never been + * supported with the default of "read" operation and running until + * terminated built into the tests. Any unsupported values for + * (original) "fill_buf" parameters are treated as failure. + * + * Return: On failure, forcibly exits the test on any parsing failure, + * returns NULL if no parsing needed (user did not actually provide + * "-b fill_buf"). + * On success, returns pointer to newly allocated and fully + * initialized struct fill_buf_param that caller must free. + */ +static struct fill_buf_param *alloc_fill_buf_param(struct user_params *uparams) +{ + struct fill_buf_param *fill_param = NULL; + char *endptr = NULL; + + if (!uparams->benchmark_cmd[0] || strcmp(uparams->benchmark_cmd[0], "fill_buf")) + return NULL; + + fill_param = malloc(sizeof(*fill_param)); + if (!fill_param) + ksft_exit_skip("Unable to allocate memory for fill_buf parameters.\n"); + + if (uparams->benchmark_cmd[1] && *uparams->benchmark_cmd[1] != '\0') { + errno = 0; + fill_param->buf_size = strtoul(uparams->benchmark_cmd[1], &endptr, 10); + if (errno || *endptr != '\0') { + free(fill_param); + ksft_exit_skip("Unable to parse benchmark buffer size.\n"); + } + } else { + fill_param->buf_size = DEFAULT_SPAN; + } + + if (uparams->benchmark_cmd[2] && *uparams->benchmark_cmd[2] != '\0') { + errno = 0; + fill_param->memflush = strtol(uparams->benchmark_cmd[2], &endptr, 10) != 0; + if (errno || *endptr != '\0') { + free(fill_param); + ksft_exit_skip("Unable to parse benchmark memflush parameter.\n"); + } + } else { + fill_param->memflush = true; + } + + if (uparams->benchmark_cmd[3] && *uparams->benchmark_cmd[3] != '\0') { + if (strcmp(uparams->benchmark_cmd[3], "0")) { + free(fill_param); + ksft_exit_skip("Only read operations supported.\n"); + } + } + + if (uparams->benchmark_cmd[4] && *uparams->benchmark_cmd[4] != '\0') { + if (strcmp(uparams->benchmark_cmd[4], "false")) { + free(fill_param); + ksft_exit_skip("fill_buf is required to run until termination.\n"); + } + } + + return fill_param; +} + static void init_user_params(struct user_params *uparams) { memset(uparams, 0, sizeof(*uparams)); @@ -158,11 +230,11 @@ static void init_user_params(struct user_params *uparams) int main(int argc, char **argv) { + struct fill_buf_param *fill_param = NULL; int tests = ARRAY_SIZE(resctrl_tests); bool test_param_seen = false; struct user_params uparams; - char *span_str = NULL; - int ret, c, i; + int c, i; init_user_params(&uparams); @@ -239,6 +311,10 @@ int main(int argc, char **argv) } last_arg: + fill_param = alloc_fill_buf_param(&uparams); + if (fill_param) + uparams.fill_buf = fill_param; + ksft_print_header(); /* @@ -257,32 +333,11 @@ last_arg: filter_dmesg(); - if (!uparams.benchmark_cmd[0]) { - /* If no benchmark is given by "-b" argument, use fill_buf. */ - uparams.benchmark_cmd[0] = "fill_buf"; - ret = asprintf(&span_str, "%u", DEFAULT_SPAN); - if (ret < 0) - ksft_exit_fail_msg("Out of memory!\n"); - uparams.benchmark_cmd[1] = span_str; - uparams.benchmark_cmd[2] = "1"; - /* - * Third parameter was previously used for "operation" - * (read/write) of which only (now default) "read"/"0" - * works. - * Fourth parameter was previously used to indicate - * how long "fill_buf" should run for, with "false" - * ("fill_buf" will keep running until terminated) - * the only option that works. - */ - uparams.benchmark_cmd[3] = NULL; - uparams.benchmark_cmd[4] = NULL; - } - ksft_set_plan(tests); for (i = 0; i < ARRAY_SIZE(resctrl_tests); i++) run_single_test(resctrl_tests[i], &uparams); - free(span_str); + free(fill_param); ksft_finished(); } diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index c4ebf70a46ef..00b3808d3bca 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -535,6 +535,11 @@ close_fp: return ret; } +struct benchmark_info { + const struct user_params *uparams; + struct resctrl_val_param *param; +}; + /* * run_benchmark - Run a specified benchmark or fill_buf (default benchmark) * in specified signal. Direct benchmark stdio to /dev/null. @@ -544,12 +549,11 @@ close_fp: */ static void run_benchmark(int signum, siginfo_t *info, void *ucontext) { - char **benchmark_cmd; - int ret, memflush; - size_t span; + struct benchmark_info *benchmark_info = info->si_ptr; + const struct user_params *uparams = benchmark_info->uparams; + struct resctrl_val_param *param = benchmark_info->param; FILE *fp; - - benchmark_cmd = info->si_ptr; + int ret; /* * Direct stdio of child to /dev/null, so that only parent writes to @@ -561,16 +565,13 @@ static void run_benchmark(int signum, siginfo_t *info, void *ucontext) parent_exit(ppid); } - if (strcmp(benchmark_cmd[0], "fill_buf") == 0) { - /* Execute default fill_buf benchmark */ - span = strtoul(benchmark_cmd[1], NULL, 10); - memflush = atoi(benchmark_cmd[2]); - - if (run_fill_buf(span, memflush)) + if (param->fill_buf) { + if (run_fill_buf(param->fill_buf->buf_size, + param->fill_buf->memflush)) fprintf(stderr, "Error in running fill buffer\n"); - } else { + } else if (uparams->benchmark_cmd[0]) { /* Execute specified benchmark */ - ret = execvp(benchmark_cmd[0], benchmark_cmd); + ret = execvp(uparams->benchmark_cmd[0], (char **)uparams->benchmark_cmd); if (ret) ksft_perror("execvp"); } @@ -585,16 +586,15 @@ static void run_benchmark(int signum, siginfo_t *info, void *ucontext) * the benchmark * @test: test information structure * @uparams: user supplied parameters - * @benchmark_cmd: benchmark command and its arguments * @param: parameters passed to resctrl_val() * * Return: 0 when the test was run, < 0 on error. */ int resctrl_val(const struct resctrl_test *test, const struct user_params *uparams, - const char * const *benchmark_cmd, struct resctrl_val_param *param) { + struct benchmark_info benchmark_info; struct sigaction sigact; int ret = 0, pipefd[2]; char pipe_message = 0; @@ -610,6 +610,9 @@ int resctrl_val(const struct resctrl_test *test, return ret; } + benchmark_info.uparams = uparams; + benchmark_info.param = param; + /* * If benchmark wasn't successfully started by child, then child should * kill parent, so save parent's pid @@ -671,13 +674,7 @@ int resctrl_val(const struct resctrl_test *test, ksft_print_msg("Benchmark PID: %d\n", (int)bm_pid); - /* - * The cast removes constness but nothing mutates benchmark_cmd within - * the context of this process. At the receiving process, it becomes - * argv, which is mutable, on exec() but that's after fork() so it - * doesn't matter for the process running the tests. - */ - value.sival_ptr = (void *)benchmark_cmd; + value.sival_ptr = (void *)&benchmark_info; /* Taskset benchmark to specified cpu */ ret = taskset_benchmark(bm_pid, uparams->cpu, NULL); -- cgit v1.2.3 From 3cb3f0b8755919648281064d44c06319743db343 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:48 -0700 Subject: selftests/resctrl: Ensure measurements skip initialization of default benchmark MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The CMT, MBA, and MBM tests rely on the resctrl_val() wrapper to start and run a benchmark while providing test specific flows via callbacks to do test specific configuration and measurements. At a high level, the resctrl_val() flow is: a) Start by fork()ing a child process that installs a signal handler for SIGUSR1 that, on receipt of SIGUSR1, will start running a benchmark. b) Assign the child process created in (a) to the resctrl control and monitoring group that dictates the memory and cache allocations with which the process can run and will contain all resctrl monitoring data of that process. c) Once parent and child are considered "ready" (determined via a message over a pipe) the parent signals the child (via SIGUSR1) to start the benchmark, waits one second for the benchmark to run, and then starts collecting monitoring data for the tests, potentially also changing allocation configuration depending on the various test callbacks. A problem with the above flow is the "black box" view of the benchmark that is combined with an arbitrarily chosen "wait one second" before measurements start. No matter what the benchmark does, it is given one second to initialize before measurements start. The default benchmark "fill_buf" consists of two parts, first it prepares a buffer (allocate, initialize, then flush), then it reads from the buffer (in unpredictable ways) until terminated. Depending on the system and the size of the buffer, the first "prepare" part may not be complete by the time the one second delay expires. Test measurements may thus start before the work needing to be measured runs. Split the default benchmark into its "prepare" and "runtime" parts and simplify the resctrl_val() wrapper while doing so. This same split cannot be done for the user provided benchmark (without a user interface change), so the current behavior is maintained for user provided benchmark. Assign the test itself to the control and monitoring group and run the "prepare" part of the benchmark in this context, ensuring it runs with required cache and memory bandwidth allocations. With the benchmark preparation complete it is only needed to fork() the "runtime" part of the benchmark (or entire user provided benchmark). Keep the "wait one second" delay before measurements start. For the default "fill_buf" benchmark this time now covers only the "runtime" portion that needs to be measured. For the user provided benchmark this delay maintains current behavior. Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/fill_buf.c | 15 -- tools/testing/selftests/resctrl/resctrl.h | 1 - tools/testing/selftests/resctrl/resctrl_val.c | 195 +++++++------------------- 3 files changed, 50 insertions(+), 161 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c index 39545f9369e8..380cc35f10c6 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -129,18 +129,3 @@ unsigned char *alloc_buffer(size_t buf_size, bool memflush) return buf; } - -int run_fill_buf(size_t buf_size, bool memflush) -{ - unsigned char *buf; - - buf = alloc_buffer(buf_size, memflush); - if (!buf) - return -1; - - fill_cache_read(buf, buf_size, false); - - free(buf); - - return 0; -} diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index c9336f9c2cae..032cd9ebd761 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -169,7 +169,6 @@ int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, unsigned char *alloc_buffer(size_t buf_size, bool memflush); void mem_flush(unsigned char *buf, size_t buf_size); void fill_cache_read(unsigned char *buf, size_t buf_size, bool once); -int run_fill_buf(size_t buf_size, bool memflush); int initialize_read_mem_bw_imc(void); int measure_read_mem_bw(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid); diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 00b3808d3bca..7c08e936572d 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -373,7 +373,7 @@ static int get_mem_bw_resctrl(FILE *fp, unsigned long *mbm_total) return 0; } -static pid_t bm_pid, ppid; +static pid_t bm_pid; void ctrlc_handler(int signum, siginfo_t *info, void *ptr) { @@ -431,13 +431,6 @@ void signal_handler_unregister(void) } } -static void parent_exit(pid_t ppid) -{ - kill(ppid, SIGKILL); - umount_resctrlfs(); - exit(EXIT_FAILURE); -} - /* * print_results_bw: the memory bandwidth results are stored in a file * @filename: file that stores the results @@ -535,52 +528,6 @@ close_fp: return ret; } -struct benchmark_info { - const struct user_params *uparams; - struct resctrl_val_param *param; -}; - -/* - * run_benchmark - Run a specified benchmark or fill_buf (default benchmark) - * in specified signal. Direct benchmark stdio to /dev/null. - * @signum: signal number - * @info: signal info - * @ucontext: user context in signal handling - */ -static void run_benchmark(int signum, siginfo_t *info, void *ucontext) -{ - struct benchmark_info *benchmark_info = info->si_ptr; - const struct user_params *uparams = benchmark_info->uparams; - struct resctrl_val_param *param = benchmark_info->param; - FILE *fp; - int ret; - - /* - * Direct stdio of child to /dev/null, so that only parent writes to - * stdio (console) - */ - fp = freopen("/dev/null", "w", stdout); - if (!fp) { - ksft_perror("Unable to direct benchmark status to /dev/null"); - parent_exit(ppid); - } - - if (param->fill_buf) { - if (run_fill_buf(param->fill_buf->buf_size, - param->fill_buf->memflush)) - fprintf(stderr, "Error in running fill buffer\n"); - } else if (uparams->benchmark_cmd[0]) { - /* Execute specified benchmark */ - ret = execvp(uparams->benchmark_cmd[0], (char **)uparams->benchmark_cmd); - if (ret) - ksft_perror("execvp"); - } - - fclose(stdout); - ksft_print_msg("Unable to run specified benchmark\n"); - parent_exit(ppid); -} - /* * resctrl_val: execute benchmark and measure memory bandwidth on * the benchmark @@ -594,12 +541,11 @@ int resctrl_val(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *param) { - struct benchmark_info benchmark_info; - struct sigaction sigact; - int ret = 0, pipefd[2]; - char pipe_message = 0; - union sigval value; + unsigned char *buf = NULL; + cpu_set_t old_affinity; int domain_id; + int ret = 0; + pid_t ppid; if (strcmp(param->filename, "") == 0) sprintf(param->filename, "stdio"); @@ -610,108 +556,65 @@ int resctrl_val(const struct resctrl_test *test, return ret; } - benchmark_info.uparams = uparams; - benchmark_info.param = param; - - /* - * If benchmark wasn't successfully started by child, then child should - * kill parent, so save parent's pid - */ ppid = getpid(); - if (pipe(pipefd)) { - ksft_perror("Unable to create pipe"); + /* Taskset test to specified CPU. */ + ret = taskset_benchmark(ppid, uparams->cpu, &old_affinity); + if (ret) + return ret; + + /* Write test to specified control & monitoring group in resctrl FS. */ + ret = write_bm_pid_to_resctrl(ppid, param->ctrlgrp, param->mongrp); + if (ret) + goto reset_affinity; - return -1; + if (param->init) { + ret = param->init(param, domain_id); + if (ret) + goto reset_affinity; } /* - * Fork to start benchmark, save child's pid so that it can be killed - * when needed + * If not running user provided benchmark, run the default + * "fill_buf". First phase of "fill_buf" is to prepare the + * buffer that the benchmark will operate on. No measurements + * are needed during this phase and prepared memory will be + * passed to next part of benchmark via copy-on-write thus + * no impact on the benchmark that relies on reading from + * memory only. */ + if (param->fill_buf) { + buf = alloc_buffer(param->fill_buf->buf_size, + param->fill_buf->memflush); + if (!buf) { + ret = -ENOMEM; + goto reset_affinity; + } + } + fflush(stdout); bm_pid = fork(); if (bm_pid == -1) { + ret = -errno; ksft_perror("Unable to fork"); - - return -1; + goto free_buf; } + /* + * What needs to be measured runs in separate process until + * terminated. + */ if (bm_pid == 0) { - /* - * Mask all signals except SIGUSR1, parent uses SIGUSR1 to - * start benchmark - */ - sigfillset(&sigact.sa_mask); - sigdelset(&sigact.sa_mask, SIGUSR1); - - sigact.sa_sigaction = run_benchmark; - sigact.sa_flags = SA_SIGINFO; - - /* Register for "SIGUSR1" signal from parent */ - if (sigaction(SIGUSR1, &sigact, NULL)) { - ksft_perror("Can't register child for signal"); - parent_exit(ppid); - } - - /* Tell parent that child is ready */ - close(pipefd[0]); - pipe_message = 1; - if (write(pipefd[1], &pipe_message, sizeof(pipe_message)) < - sizeof(pipe_message)) { - ksft_perror("Failed signaling parent process"); - close(pipefd[1]); - return -1; - } - close(pipefd[1]); - - /* Suspend child until delivery of "SIGUSR1" from parent */ - sigsuspend(&sigact.sa_mask); - - ksft_perror("Child is done"); - parent_exit(ppid); + if (param->fill_buf) + fill_cache_read(buf, param->fill_buf->buf_size, false); + else if (uparams->benchmark_cmd[0]) + execvp(uparams->benchmark_cmd[0], (char **)uparams->benchmark_cmd); + exit(EXIT_SUCCESS); } ksft_print_msg("Benchmark PID: %d\n", (int)bm_pid); - value.sival_ptr = (void *)&benchmark_info; - - /* Taskset benchmark to specified cpu */ - ret = taskset_benchmark(bm_pid, uparams->cpu, NULL); - if (ret) - goto out; - - /* Write benchmark to specified control&monitoring grp in resctrl FS */ - ret = write_bm_pid_to_resctrl(bm_pid, param->ctrlgrp, param->mongrp); - if (ret) - goto out; - - if (param->init) { - ret = param->init(param, domain_id); - if (ret) - goto out; - } - - /* Parent waits for child to be ready. */ - close(pipefd[1]); - while (pipe_message != 1) { - if (read(pipefd[0], &pipe_message, sizeof(pipe_message)) < - sizeof(pipe_message)) { - ksft_perror("Failed reading message from child process"); - close(pipefd[0]); - goto out; - } - } - close(pipefd[0]); - - /* Signal child to start benchmark */ - if (sigqueue(bm_pid, SIGUSR1, value) == -1) { - ksft_perror("sigqueue SIGUSR1 to child"); - ret = -1; - goto out; - } - - /* Give benchmark enough time to fully run */ + /* Give benchmark enough time to fully run. */ sleep(1); /* Test runs until the callback setup() tells the test to stop. */ @@ -729,8 +632,10 @@ int resctrl_val(const struct resctrl_test *test, break; } -out: kill(bm_pid, SIGKILL); - +free_buf: + free(buf); +reset_affinity: + taskset_restore(ppid, &old_affinity); return ret; } -- cgit v1.2.3 From f77b9672536e581c945b2623b521a284fdbf75ff Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:49 -0700 Subject: selftests/resctrl: Use cache size to determine "fill_buf" buffer size MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit By default the MBM and MBA tests use the "fill_buf" benchmark to read from a buffer with the goal to measure the memory bandwidth generated by this buffer access. Care should be taken when sizing the buffer used by the "fill_buf" benchmark. If the buffer is small enough to fit in the cache then it cannot be expected that the benchmark will generate much memory bandwidth. For example, on a system with 320MB L3 cache the existing hardcoded default of 250MB is insufficient. Use the measured cache size to determine a buffer size that can be expected to trigger memory access while keeping the existing default as minimum, now renamed to MINIMUM_SPAN, that has been appropriate for testing so far. Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/fill_buf.c | 13 +++++++++++++ tools/testing/selftests/resctrl/mba_test.c | 7 ++++++- tools/testing/selftests/resctrl/mbm_test.c | 7 ++++++- tools/testing/selftests/resctrl/resctrl.h | 3 ++- tools/testing/selftests/resctrl/resctrl_tests.c | 2 +- 5 files changed, 28 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c index 380cc35f10c6..19a01a52dc1a 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -129,3 +129,16 @@ unsigned char *alloc_buffer(size_t buf_size, bool memflush) return buf; } + +ssize_t get_fill_buf_size(int cpu_no, const char *cache_type) +{ + unsigned long cache_total_size = 0; + int ret; + + ret = get_cache_size(cpu_no, cache_type, &cache_total_size); + if (ret) + return ret; + + return cache_total_size * 2 > MINIMUM_SPAN ? + cache_total_size * 2 : MINIMUM_SPAN; +} diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index 74d95c460bd0..bf37f3555660 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -182,7 +182,12 @@ static int mba_run_test(const struct resctrl_test *test, const struct user_param fill_buf.memflush = uparams->fill_buf->memflush; param.fill_buf = &fill_buf; } else if (!uparams->benchmark_cmd[0]) { - fill_buf.buf_size = DEFAULT_SPAN; + ssize_t buf_size; + + buf_size = get_fill_buf_size(uparams->cpu, "L3"); + if (buf_size < 0) + return buf_size; + fill_buf.buf_size = buf_size; fill_buf.memflush = true; param.fill_buf = &fill_buf; } diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index 72261413c868..4224f8ce3538 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -149,7 +149,12 @@ static int mbm_run_test(const struct resctrl_test *test, const struct user_param fill_buf.memflush = uparams->fill_buf->memflush; param.fill_buf = &fill_buf; } else if (!uparams->benchmark_cmd[0]) { - fill_buf.buf_size = DEFAULT_SPAN; + ssize_t buf_size; + + buf_size = get_fill_buf_size(uparams->cpu, "L3"); + if (buf_size < 0) + return buf_size; + fill_buf.buf_size = buf_size; fill_buf.memflush = true; param.fill_buf = &fill_buf; } diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 032cd9ebd761..a553fe975938 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -41,7 +41,7 @@ #define BENCHMARK_ARGS 64 -#define DEFAULT_SPAN (250 * MB) +#define MINIMUM_SPAN (250 * MB) /* * fill_buf_param: "fill_buf" benchmark parameters @@ -169,6 +169,7 @@ int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, unsigned char *alloc_buffer(size_t buf_size, bool memflush); void mem_flush(unsigned char *buf, size_t buf_size); void fill_cache_read(unsigned char *buf, size_t buf_size, bool once); +ssize_t get_fill_buf_size(int cpu_no, const char *cache_type); int initialize_read_mem_bw_imc(void); int measure_read_mem_bw(const struct user_params *uparams, struct resctrl_val_param *param, pid_t bm_pid); diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c index 24daf76b4039..3335af815b21 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -189,7 +189,7 @@ static struct fill_buf_param *alloc_fill_buf_param(struct user_params *uparams) ksft_exit_skip("Unable to parse benchmark buffer size.\n"); } } else { - fill_param->buf_size = DEFAULT_SPAN; + fill_param->buf_size = MINIMUM_SPAN; } if (uparams->benchmark_cmd[2] && *uparams->benchmark_cmd[2] != '\0') { -- cgit v1.2.3 From 501cfdba0a400e70ea220a4b02f1805e0e9de6a1 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:50 -0700 Subject: selftests/resctrl: Do not compare performance counters and resctrl at low bandwidth MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The MBA test incrementally throttles memory bandwidth, each time followed by a comparison between the memory bandwidth observed by the performance counters and resctrl respectively. While a comparison between performance counters and resctrl is generally appropriate, they do not have an identical view of memory bandwidth. For example RAS features or memory performance features that generate memory traffic may drive accesses that are counted differently by performance counters and MBM respectively, for instance generating "overhead" traffic which is not counted against any specific RMID. As a ratio, this different view of memory bandwidth becomes more apparent at low memory bandwidths. It is not practical to enable/disable the various features that may generate memory bandwidth to give performance counters and resctrl an identical view. Instead, do not compare performance counters and resctrl view of memory bandwidth when the memory bandwidth is low. Bandwidth throttling behaves differently across platforms so it is not appropriate to drop measurement data simply based on the throttling level. Instead, use a threshold of 750MiB that has been observed to support adequate comparison between performance counters and resctrl. Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/mba_test.c | 7 +++++++ tools/testing/selftests/resctrl/resctrl.h | 10 ++++++++++ 2 files changed, 17 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index bf37f3555660..5b4f0aa7a3a4 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -98,6 +98,13 @@ static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) avg_bw_imc = sum_bw_imc / (NUM_OF_RUNS - 1); avg_bw_resc = sum_bw_resc / (NUM_OF_RUNS - 1); + if (avg_bw_imc < THROTTLE_THRESHOLD || avg_bw_resc < THROTTLE_THRESHOLD) { + ksft_print_msg("Bandwidth below threshold (%d MiB). Dropping results from MBA schemata %u.\n", + THROTTLE_THRESHOLD, + ALLOCATION_MIN + ALLOCATION_STEP * allocation); + continue; + } + avg_diff = (float)labs(avg_bw_resc - avg_bw_imc) / avg_bw_imc; avg_diff_per = (int)(avg_diff * 100); diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index a553fe975938..dab1953fc7a0 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -43,6 +43,16 @@ #define MINIMUM_SPAN (250 * MB) +/* + * Memory bandwidth (in MiB) below which the bandwidth comparisons + * between iMC and resctrl are considered unreliable. For example RAS + * features or memory performance features that generate memory traffic + * may drive accesses that are counted differently by performance counters + * and MBM respectively, for instance generating "overhead" traffic which + * is not counted against any specific RMID. + */ +#define THROTTLE_THRESHOLD 750 + /* * fill_buf_param: "fill_buf" benchmark parameters * @buf_size: Size (in bytes) of buffer used in benchmark. -- cgit v1.2.3 From 295b898426d8fb5b79672d1dae358ca8070f2196 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:51 -0700 Subject: selftests/resctrl: Keep results from first test run MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The resctrl selftests drop the results from every first test run to avoid (per comment) "inaccurate due to monitoring setup transition phase" data. Previously inaccurate data resulted from workloads needing some time to "settle" and also the measurements themselves to account for earlier measurements to measure across needed timeframe. commit da50de0a92f3 ("selftests/resctrl: Calculate resctrl FS derived mem bw over sleep(1) only") ensured that measurements accurately measure just the time frame of interest. The default "fill_buf" benchmark since separated the buffer prepare phase from the benchmark run phase reducing the need for the tests themselves to accommodate the benchmark's "settle" time. With these enhancements there are no remaining portions needing to "settle" and the first test run can contribute to measurements. Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/cmt_test.c | 5 ++--- tools/testing/selftests/resctrl/mba_test.c | 10 +++------- tools/testing/selftests/resctrl/mbm_test.c | 10 +++------- 3 files changed, 8 insertions(+), 17 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index 4c3cf2c25a38..3bbf3042fb06 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -99,14 +99,13 @@ static int check_results(struct resctrl_val_param *param, size_t span, int no_of } /* Field 3 is llc occ resc value */ - if (runs > 0) - sum_llc_occu_resc += strtoul(token_array[3], NULL, 0); + sum_llc_occu_resc += strtoul(token_array[3], NULL, 0); runs++; } fclose(fp); return show_results_info(sum_llc_occu_resc, no_of_bits, span, - MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, true); + MAX_DIFF, MAX_DIFF_PERCENT, runs, true); } static void cmt_test_cleanup(void) diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index 5b4f0aa7a3a4..4e6645b172e3 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -86,18 +86,14 @@ static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) int avg_diff_per; float avg_diff; - /* - * The first run is discarded due to inaccurate value from - * phase transition. - */ - for (runs = NUM_OF_RUNS * allocation + 1; + for (runs = NUM_OF_RUNS * allocation; runs < NUM_OF_RUNS * allocation + NUM_OF_RUNS ; runs++) { sum_bw_imc += bw_imc[runs]; sum_bw_resc += bw_resc[runs]; } - avg_bw_imc = sum_bw_imc / (NUM_OF_RUNS - 1); - avg_bw_resc = sum_bw_resc / (NUM_OF_RUNS - 1); + avg_bw_imc = sum_bw_imc / NUM_OF_RUNS; + avg_bw_resc = sum_bw_resc / NUM_OF_RUNS; if (avg_bw_imc < THROTTLE_THRESHOLD || avg_bw_resc < THROTTLE_THRESHOLD) { ksft_print_msg("Bandwidth below threshold (%d MiB). Dropping results from MBA schemata %u.\n", THROTTLE_THRESHOLD, diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index 4224f8ce3538..315b2ef3b3bc 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -22,17 +22,13 @@ show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, size_t span) int runs, ret, avg_diff_per; float avg_diff = 0; - /* - * Discard the first value which is inaccurate due to monitoring setup - * transition phase. - */ - for (runs = 1; runs < NUM_OF_RUNS ; runs++) { + for (runs = 0; runs < NUM_OF_RUNS; runs++) { sum_bw_imc += bw_imc[runs]; sum_bw_resc += bw_resc[runs]; } - avg_bw_imc = sum_bw_imc / 4; - avg_bw_resc = sum_bw_resc / 4; + avg_bw_imc = sum_bw_imc / NUM_OF_RUNS; + avg_bw_resc = sum_bw_resc / NUM_OF_RUNS; avg_diff = (float)labs(avg_bw_resc - avg_bw_imc) / avg_bw_imc; avg_diff_per = (int)(avg_diff * 100); -- cgit v1.2.3 From a44c26d7fa74a5f4d2795a5c55a2d6ec1ebf1e38 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 24 Oct 2024 14:18:52 -0700 Subject: selftests/resctrl: Replace magic constants used as array size MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The Memory Bandwidth Allocation (MBA) test iterates through all possible MBA allocations, from 10% (ALLOCATION_MIN) to 100% (ALLOCATION_MAX) with increments of 10% (ALLOCATION_STEP) at each iteration. During each iteration the test measures the actual memory bandwidth NUM_OF_RUNS times to determine the impact of MBA on actual memory bandwidth. After the MBA test completes all the memory bandwidth measurements are parsed into an array. One array for resctrl Memory Bandwidth Monitoring (MBM) measurements and one array for the Integrated Memory Controller (iMC) measurements. Each array has a hardcoded size of 1024 that is large enough to hold the current test data, but this hardcoded value makes the implementation difficult to understand. It will not be clear that this array needs to be reconsidered if any of the test parameters are changed. Replace the magic constant as array size with the test parameters the array size depends on. Reported-by: Ilpo Järvinen Closes: https://lore.kernel.org/all/45af2a8c-517d-8f0d-137d-ad0f3f6a3c68@linux.intel.com/ Signed-off-by: Reinette Chatre Reviewed-by: Ilpo Järvinen Signed-off-by: Shuah Khan --- tools/testing/selftests/resctrl/mba_test.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index 4e6645b172e3..536d9089d2f6 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -127,8 +127,9 @@ static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) static int check_results(void) { + unsigned long bw_resc[NUM_OF_RUNS * ALLOCATION_MAX / ALLOCATION_STEP]; + unsigned long bw_imc[NUM_OF_RUNS * ALLOCATION_MAX / ALLOCATION_STEP]; char *token_array[8], output[] = RESULT_FILE_NAME, temp[512]; - unsigned long bw_imc[1024], bw_resc[1024]; int runs; FILE *fp; -- cgit v1.2.3 From 690e50dd69ee48e43e0f7c42396487da1b81be14 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Sun, 3 Nov 2024 08:53:14 -0800 Subject: tools: ynl-gen: de-kdocify enums with no doc for entries Sometimes the names of the enum entries are self-explanatory or come from standards. Forcing authors to write trivial kdoc for each of such entries seems unreasonable, but kdoc would complain about undocumented entries. Detect enums which only have documentation for the entire type and no documentation for entries. Render their doc as a plain comment. Link: https://patch.msgid.link/20241103165314.1631237-1-kuba@kernel.org Signed-off-by: Jakub Kicinski --- tools/net/ynl/lib/nlspec.py | 3 +++ tools/net/ynl/ynl-gen-c.py | 14 +++++++++----- 2 files changed, 12 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/net/ynl/lib/nlspec.py b/tools/net/ynl/lib/nlspec.py index b6d6f8aef423..a745739655ad 100644 --- a/tools/net/ynl/lib/nlspec.py +++ b/tools/net/ynl/lib/nlspec.py @@ -131,6 +131,9 @@ class SpecEnumSet(SpecElement): def has_doc(self): if 'doc' in self.yaml: return True + return self.has_entry_doc() + + def has_entry_doc(self): for entry in self.entries.values(): if entry.has_doc(): return True diff --git a/tools/net/ynl/ynl-gen-c.py b/tools/net/ynl/ynl-gen-c.py index aa22eb092475..c48b69071111 100755 --- a/tools/net/ynl/ynl-gen-c.py +++ b/tools/net/ynl/ynl-gen-c.py @@ -2437,11 +2437,15 @@ def render_uapi(family, cw): enum = family.consts[const['name']] if enum.has_doc(): - cw.p('/**') - doc = '' - if 'doc' in enum: - doc = ' - ' + enum['doc'] - cw.write_doc_line(enum.enum_name + doc) + if enum.has_entry_doc(): + cw.p('/**') + doc = '' + if 'doc' in enum: + doc = ' - ' + enum['doc'] + cw.write_doc_line(enum.enum_name + doc) + else: + cw.p('/*') + cw.write_doc_line(enum['doc'], indent=False) for entry in enum.entries.values(): if entry.has_doc(): doc = '@' + entry.c_name + ': ' + entry['doc'] -- cgit v1.2.3 From 2d0f2a648147d6bbf0655e03500586a6712a7281 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 4 Oct 2024 18:01:53 -0400 Subject: KVM: selftests: memslot_perf_test: increase guest sync timeout When memslot_perf_test is run nested, first iteration of test_memslot_rw_loop testcase, sometimes takes more than 2 seconds due to build of shadow page tables. Following iterations are fast. To be on the safe side, bump the timeout to 10 seconds. Signed-off-by: Maxim Levitsky Tested-by: Liam Merwick Reviewed-by: Liam Merwick Link: https://lore.kernel.org/r/20241004220153.287459-1-mlevitsk@redhat.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/memslot_perf_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/memslot_perf_test.c b/tools/testing/selftests/kvm/memslot_perf_test.c index 989ffe0d047f..e3711beff7f3 100644 --- a/tools/testing/selftests/kvm/memslot_perf_test.c +++ b/tools/testing/selftests/kvm/memslot_perf_test.c @@ -417,7 +417,7 @@ static bool _guest_should_exit(void) */ static noinline void host_perform_sync(struct sync_area *sync) { - alarm(2); + alarm(10); atomic_store_explicit(&sync->sync_flag, true, memory_order_release); while (atomic_load_explicit(&sync->sync_flag, memory_order_acquire)) -- cgit v1.2.3 From 945bdae20be5a13f1fcdcb14ec356dcbeee35839 Mon Sep 17 00:00:00 2001 From: Patrick Roy Date: Thu, 24 Oct 2024 10:59:53 +0100 Subject: KVM: selftests: fix unintentional noop test in guest_memfd_test.c The loop in test_create_guest_memfd_invalid() that is supposed to test that nothing is accepted as a valid flag to KVM_CREATE_GUEST_MEMFD was initializing `flag` as 0 instead of BIT(0). This caused the loop to immediately exit instead of iterating over BIT(0), BIT(1), ... . Fixes: 8a89efd43423 ("KVM: selftests: Add basic selftest for guest_memfd()") Signed-off-by: Patrick Roy Reviewed-by: James Gowans Reviewed-by: Muhammad Usama Anjum Link: https://lore.kernel.org/r/20241024095956.3668818-1-roypat@amazon.co.uk Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/guest_memfd_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/guest_memfd_test.c b/tools/testing/selftests/kvm/guest_memfd_test.c index ba0c8e996035..ce687f8d248f 100644 --- a/tools/testing/selftests/kvm/guest_memfd_test.c +++ b/tools/testing/selftests/kvm/guest_memfd_test.c @@ -134,7 +134,7 @@ static void test_create_guest_memfd_invalid(struct kvm_vm *vm) size); } - for (flag = 0; flag; flag <<= 1) { + for (flag = BIT(0); flag; flag <<= 1) { fd = __vm_create_guest_memfd(vm, page_size, flag); TEST_ASSERT(fd == -1 && errno == EINVAL, "guest_memfd() with flag '0x%lx' should fail with EINVAL", -- cgit v1.2.3 From 5b188cc4866aaf712e896f92ac42c7802135e507 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Wed, 9 Oct 2024 08:49:41 -0700 Subject: KVM: selftests: Disable strict aliasing Disable strict aliasing, as has been done in the kernel proper for decades (literally since before git history) to fix issues where gcc will optimize away loads in code that looks 100% correct, but is _technically_ undefined behavior, and thus can be thrown away by the compiler. E.g. arm64's vPMU counter access test casts a uint64_t (unsigned long) pointer to a u64 (unsigned long long) pointer when setting PMCR.N via u64p_replace_bits(), which gcc-13 detects and optimizes away, i.e. ignores the result and uses the original PMCR. The issue is most easily observed by making set_pmcr_n() noinline and wrapping the call with printf(), e.g. sans comments, for this code: printf("orig = %lx, next = %lx, want = %lu\n", pmcr_orig, pmcr, pmcr_n); set_pmcr_n(&pmcr, pmcr_n); printf("orig = %lx, next = %lx, want = %lu\n", pmcr_orig, pmcr, pmcr_n); gcc-13 generates: 0000000000401c90 : 401c90: f9400002 ldr x2, [x0] 401c94: b3751022 bfi x2, x1, #11, #5 401c98: f9000002 str x2, [x0] 401c9c: d65f03c0 ret 0000000000402660 : 402724: aa1403e3 mov x3, x20 402728: aa1503e2 mov x2, x21 40272c: aa1603e0 mov x0, x22 402730: aa1503e1 mov x1, x21 402734: 940060ff bl 41ab30 <_IO_printf> 402738: aa1403e1 mov x1, x20 40273c: 910183e0 add x0, sp, #0x60 402740: 97fffd54 bl 401c90 402744: aa1403e3 mov x3, x20 402748: aa1503e2 mov x2, x21 40274c: aa1503e1 mov x1, x21 402750: aa1603e0 mov x0, x22 402754: 940060f7 bl 41ab30 <_IO_printf> with the value stored in [sp + 0x60] ignored by both printf() above and in the test proper, resulting in a false failure due to vcpu_set_reg() simply storing the original value, not the intended value. $ ./vpmu_counter_access Random seed: 0x6b8b4567 orig = 3040, next = 3040, want = 0 orig = 3040, next = 3040, want = 0 ==== Test Assertion Failure ==== aarch64/vpmu_counter_access.c:505: pmcr_n == get_pmcr_n(pmcr) pid=71578 tid=71578 errno=9 - Bad file descriptor 1 0x400673: run_access_test at vpmu_counter_access.c:522 2 (inlined by) main at vpmu_counter_access.c:643 3 0x4132d7: __libc_start_call_main at libc-start.o:0 4 0x413653: __libc_start_main at ??:0 5 0x40106f: _start at ??:0 Failed to update PMCR.N to 0 (received: 6) Somewhat bizarrely, gcc-11 also exhibits the same behavior, but only if set_pmcr_n() is marked noinline, whereas gcc-13 fails even if set_pmcr_n() is inlined in its sole caller. Cc: stable@vger.kernel.org Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116912 Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/Makefile | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 156fbfae940f..1896ef383cae 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -241,10 +241,10 @@ CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \ -Wno-gnu-variable-sized-type-not-at-end -MD -MP -DCONFIG_64BIT \ -fno-builtin-memcmp -fno-builtin-memcpy \ -fno-builtin-memset -fno-builtin-strnlen \ - -fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) \ - -I$(LINUX_TOOL_ARCH_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude \ - -I$( Date: Wed, 30 Oct 2024 21:53:33 -0700 Subject: KVM: selftests: Don't force -march=x86-64-v2 if it's unsupported Force -march=x86-64-v2 to avoid SSE/AVX instructions if and only if the uarch definition is supported by the compiler, e.g. gcc 7.5 only supports x86-64. Fixes: 9a400068a158 ("KVM: selftests: x86: Avoid using SSE/AVX instructions") Cc: Vitaly Kuznetsov Reviewed-and-tested-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20241031045333.1209195-1-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/Makefile | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 1896ef383cae..48645a2e29da 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -249,8 +249,10 @@ ifeq ($(ARCH),s390) CFLAGS += -march=z10 endif ifeq ($(ARCH),x86) +ifeq ($(shell echo "void foo(void) { }" | $(CC) -march=x86-64-v2 -x c - -c -o /dev/null 2>/dev/null; echo "$$?"),0) CFLAGS += -march=x86-64-v2 endif +endif ifeq ($(ARCH),arm64) tools_dir := $(top_srcdir)/tools arm64_tools_dir := $(tools_dir)/arch/arm64/tools/ -- cgit v1.2.3 From c741c7b5e98357e9f45e012f8c4295b5aed8d5c0 Mon Sep 17 00:00:00 2001 From: Michael Petlan Date: Fri, 1 Nov 2024 11:28:12 +0100 Subject: perf test: Remove cpu-list BPF cgroup counter test The cpu-list part of this testcase has proven itself to be unreliable. Sometimes, we get "" for system.slice when pinned to CPUs 0 and 1. In such case, the test fails. Since we cannot simply guarantee that any system.slice load will run on any arbitrary list of CPUs, except the whole set of all CPUs, let's rather remove the cpu-list subtest. Fixes: a84260e314029e6dc9904fd ("perf test stat_bpf_counters_cgrp: Enhance perf stat cgroup BPF counter test") Signed-off-by: Michael Petlan Cc: vmolnaro@redhat.com Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20241101102812.576425-1-mpetlan@redhat.com Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/stat_bpf_counters_cgrp.sh | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/stat_bpf_counters_cgrp.sh b/tools/perf/tests/shell/stat_bpf_counters_cgrp.sh index e75d0780dc78..2ec69060c42f 100755 --- a/tools/perf/tests/shell/stat_bpf_counters_cgrp.sh +++ b/tools/perf/tests/shell/stat_bpf_counters_cgrp.sh @@ -58,22 +58,9 @@ check_system_wide_counted() fi } -check_cpu_list_counted() -{ - check_cpu_list_counted_output=$(perf stat -C 0,1 --bpf-counters --for-each-cgroup ${test_cgroups} -e cpu-clock -x, taskset -c 1 sleep 1 2>&1) - if echo ${check_cpu_list_counted_output} | grep -q -F " Date: Thu, 24 Oct 2024 21:32:36 +0800 Subject: perf build: Add missing cflags when building with custom libtraceevent When building with custom libtraceevent, below errors occur: $ make -C tools/perf NO_LIBPYTHON=1 PKG_CONFIG_PATH= In file included from util/session.h:5, from builtin-buildid-list.c:17: util/trace-event.h:153:10: fatal error: traceevent/event-parse.h: No such file or directory 153 | #include | ^~~~~~~~~~~~~~~~~~~~~~~~~~ This is because the include path is missed in the cflags. Add it. Fixes: 0f0e1f445690 ("perf build: Use pkg-config for feature check for libtrace{event,fs}") Signed-off-by: Yicong Yang Reviewed-by: Leo Yan Reviewed-by: Guilherme Amadio Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/20241024133236.31016-1-yangyicong@huawei.com Signed-off-by: Namhyung Kim --- tools/perf/Makefile.config | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index e68f0be259a1..80bf06e828f0 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -1183,7 +1183,7 @@ endif ifneq ($(NO_LIBTRACEEVENT),1) $(call feature_check,libtraceevent) ifeq ($(feature-libtraceevent), 1) - CFLAGS += -DHAVE_LIBTRACEEVENT + CFLAGS += -DHAVE_LIBTRACEEVENT $(shell $(PKG_CONFIG) --cflags libtraceevent) LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtraceevent) EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtraceevent) LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent).0.0 -- cgit v1.2.3 From 6e0e0a18632630bbe2f3e97c79d154ae1faf64df Mon Sep 17 00:00:00 2001 From: Charlie Jenkins Date: Mon, 4 Nov 2024 13:19:15 -0800 Subject: perf tools: Add all shellcheck_log to gitignore Instead of adding specific shellcheck_log files to the gitignore, add all of them to prevent these files from cluttering the git status. Signed-off-by: Charlie Jenkins Link: https://lore.kernel.org/r/20241104-shellcheck_gitignore-v1-1-ffc179f57dc9@rivosinc.com Signed-off-by: Namhyung Kim --- tools/perf/.gitignore | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/.gitignore b/tools/perf/.gitignore index f5b81d439387..19ce1cd56f8c 100644 --- a/tools/perf/.gitignore +++ b/tools/perf/.gitignore @@ -39,9 +39,7 @@ trace/beauty/generated/ pmu-events/pmu-events.c pmu-events/jevents pmu-events/metric_test.log -tests/shell/*.shellcheck_log -tests/shell/coresight/*.shellcheck_log -tests/shell/lib/*.shellcheck_log +*.shellcheck_log feature/ libapi/ libbpf/ -- cgit v1.2.3 From a52143aa2127aa92b11b3936b606de81d1ef6ef3 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 4 Nov 2024 11:34:58 -0300 Subject: perf test: Remove dangling CFLAGS for removed attr.o object Since the C test wrapper for attr.py was removed we don't have an attr.o object for that CFLAGS_attr.o to apply for, remove it. Fixes: 3a447031f5fc21c4 ("perf test: Remove C test wrapper for attr.py") Signed-off-by: Arnaldo Carvalho de Melo Reviewed-by: Ian Rogers Cc: Athira Rajeev Cc: Howard Chu Cc: James Clark Cc: Leo Yan Cc: Stephen Rothwell Cc: Thomas Richter Cc: Veronika Molnarova Cc: Weilin Wang Cc: Ze Gao Cc: zhaimingbing Link: https://lore.kernel.org/r/ZyjbksKYnV22zmz-@x1 Signed-off-by: Namhyung Kim --- tools/perf/tests/Build | 1 - 1 file changed, 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index 03cbdf7c50a0..01ed9335db4d 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -72,7 +72,6 @@ ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc)) perf-test-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o endif -CFLAGS_attr.o += -DBINDIR="BUILD_STR($(bindir_SQ))" -DPYTHON="BUILD_STR($(PYTHON_WORD))" CFLAGS_python-use.o += -DPYTHONPATH="BUILD_STR($(OUTPUT)python)" -DPYTHON="BUILD_STR($(PYTHON_WORD))" CFLAGS_dwarf-unwind.o += -fno-optimize-sibling-calls -- cgit v1.2.3 From 29bf07bc9ad2eca06a14d78f7f4dc5dc8f10aae3 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Sat, 2 Nov 2024 16:17:02 -0700 Subject: perf test: Fix ftrace test with regex patterns During the parallel testing, I've noticed some ftrace test failures. It seems the regex pattern checks 100 msec of nanosleep with the error range of 10 msec. But sometimes it's affected by other processes and resulted in more time in the syscall. The following output shows that it took more than 120 msec and failed. Let's update the regex pattern so that it can allow more drifts. perf ftrace profile test # Total (us) Avg (us) Max (us) Count Function 121279.500 121279.500 121279.500 1 __x64_sys_clock_nanosleep 121278.400 121278.400 121278.400 1 common_nsleep 121277.800 121277.800 121277.800 1 hrtimer_nanosleep 121277.100 121277.100 121277.100 1 do_nanosleep 341760.289 56960.048 121273.400 6 schedule 176.200 25.171 31.616 7 scheduler_tick 0.923 0.923 0.923 1 native_smp_send_reschedule 345522.360 69104.472 345320.600 5 __x64_sys_execve 345486.585 69097.317 345312.700 5 do_execveat_common.isra.0 340730.300 340730.300 340730.300 1 bprm_execve 1.758 0.879 0.883 2 sched_mm_cid_before_execve 1.112 1.112 1.112 1 sched_mm_cid_after_execve ---- end(-1) ---- 81: perf ftrace tests : FAILED! Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20241102231702.2262258-1-namhyung@kernel.org Signed-off-by: Namhyung Kim --- tools/perf/tests/shell/ftrace.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/tests/shell/ftrace.sh b/tools/perf/tests/shell/ftrace.sh index a6ee740f0d7e..11010711efa1 100755 --- a/tools/perf/tests/shell/ftrace.sh +++ b/tools/perf/tests/shell/ftrace.sh @@ -72,7 +72,7 @@ test_ftrace_profile() { grep sleep "${output}" grep schedule "${output}" grep execve "${output}" - time_re="[[:space:]]+10[[:digit:]]{4}\.[[:digit:]]{3}" + time_re="[[:space:]]+1[[:digit:]]{5}\.[[:digit:]]{3}" # 100283.000 100283.000 100283.000 1 __x64_sys_clock_nanosleep # Check for one *clock_nanosleep line with a Count of just 1 that takes a bit more than 0.1 seconds # Strip the _x64_sys part to work with other architectures -- cgit v1.2.3 From a759bf0dfc4db3cb6556fc79c7c98da3a46b2b80 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 5 Nov 2024 11:45:27 -1000 Subject: sched_ext: Update scx_show_state.py to match scx_ops_bypass_depth's new type 0e7ffff1b811 ("scx: Fix raciness in scx_ops_bypass()") converted scx_ops_bypass_depth from an atomic to an int. Update scx_show_state.py accordingly. Signed-off-by: Tejun Heo Fixes: 0e7ffff1b811 ("scx: Fix raciness in scx_ops_bypass()") --- tools/sched_ext/scx_show_state.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/sched_ext/scx_show_state.py b/tools/sched_ext/scx_show_state.py index 8bc626ede1c4..c4b3fdda9a0b 100644 --- a/tools/sched_ext/scx_show_state.py +++ b/tools/sched_ext/scx_show_state.py @@ -35,6 +35,6 @@ print(f'enabled : {read_static_key("__scx_ops_enabled")}') print(f'switching_all : {read_int("scx_switching_all")}') print(f'switched_all : {read_static_key("__scx_switched_all")}') print(f'enable_state : {ops_state_str(enable_state)} ({enable_state})') -print(f'bypass_depth : {read_atomic("scx_ops_bypass_depth")}') +print(f'bypass_depth : {prog["scx_ops_bypass_depth"].value_()}') print(f'nr_rejected : {read_atomic("scx_nr_rejected")}') print(f'enable_seq : {read_atomic("scx_enable_seq")}') -- cgit v1.2.3 From 6801cf7890f2ed8fcc14859b47501f8ee7a58ec7 Mon Sep 17 00:00:00 2001 From: Hou Tao Date: Tue, 5 Nov 2024 12:30:57 +0800 Subject: selftests/bpf: Use -4095 as the bad address for bits iterator As reported by Byeonguk, the bad_words test in verifier_bits_iter.c occasionally fails on s390 host. Quoting Ilya's explanation: s390 kernel runs in a completely separate address space, there is no user/kernel split at TASK_SIZE. The same address may be valid in both the kernel and the user address spaces, there is no way to tell by looking at it. The config option related to this property is ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE. Also, unfortunately, 0 is a valid address in the s390 kernel address space. Fix the issue by using -4095 as the bad address for bits iterator, as suggested by Ilya. Verify that bpf_iter_bits_new() returns -EINVAL for NULL address and -EFAULT for bad address. Fixes: ebafc1e535db ("selftests/bpf: Add three test cases for bits_iter") Reported-by: Byeonguk Jeong Closes: https://lore.kernel.org/bpf/ZycSXwjH4UTvx-Cn@ub22/ Signed-off-by: Hou Tao Acked-by: Ilya Leoshkevich Link: https://lore.kernel.org/r/20241105043057.3371482-1-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov --- .../selftests/bpf/progs/verifier_bits_iter.c | 32 +++++++++++++++++++--- 1 file changed, 28 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/progs/verifier_bits_iter.c b/tools/testing/selftests/bpf/progs/verifier_bits_iter.c index 156cc278e2fc..7c881bca9af5 100644 --- a/tools/testing/selftests/bpf/progs/verifier_bits_iter.c +++ b/tools/testing/selftests/bpf/progs/verifier_bits_iter.c @@ -57,9 +57,15 @@ __description("null pointer") __success __retval(0) int null_pointer(void) { - int nr = 0; + struct bpf_iter_bits iter; + int err, nr = 0; int *bit; + err = bpf_iter_bits_new(&iter, NULL, 1); + bpf_iter_bits_destroy(&iter); + if (err != -EINVAL) + return 1; + bpf_for_each(bits, bit, NULL, 1) nr++; return nr; @@ -194,15 +200,33 @@ __description("bad words") __success __retval(0) int bad_words(void) { - void *bad_addr = (void *)(3UL << 30); - int nr = 0; + void *bad_addr = (void *)-4095; + struct bpf_iter_bits iter; + volatile int nr; int *bit; + int err; + + err = bpf_iter_bits_new(&iter, bad_addr, 1); + bpf_iter_bits_destroy(&iter); + if (err != -EFAULT) + return 1; + nr = 0; bpf_for_each(bits, bit, bad_addr, 1) nr++; + if (nr != 0) + return 2; + err = bpf_iter_bits_new(&iter, bad_addr, 4); + bpf_iter_bits_destroy(&iter); + if (err != -EFAULT) + return 3; + + nr = 0; bpf_for_each(bits, bit, bad_addr, 4) nr++; + if (nr != 0) + return 4; - return nr; + return 0; } -- cgit v1.2.3 From ac1bd50164b7995d0b8337b25d52ae79eefb9487 Mon Sep 17 00:00:00 2001 From: Geliang Tang Date: Thu, 31 Oct 2024 09:40:46 +0800 Subject: selftests/bpf: Drop netns helpers in mptcp New netns selftest helpers netns_new() and netns_free() has been added in network_helpers.c, let's use them in mptcp selftests too instead of using MPTCP's own helpers create_netns() and cleanup_netns(). Signed-off-by: Geliang Tang Reviewed-by: Matthieu Baerts (NGI0) Link: https://lore.kernel.org/r/c02fda3177b34f9e74a044833fda9761627f4d07.1730338692.git.tanggeliang@kylinos.cn Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/prog_tests/mptcp.c | 42 ++++++++------------------ 1 file changed, 12 insertions(+), 30 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/prog_tests/mptcp.c b/tools/testing/selftests/bpf/prog_tests/mptcp.c index be3cad2aff77..f8eb7f9d4fd2 100644 --- a/tools/testing/selftests/bpf/prog_tests/mptcp.c +++ b/tools/testing/selftests/bpf/prog_tests/mptcp.c @@ -69,24 +69,6 @@ struct mptcp_storage { char ca_name[TCP_CA_NAME_MAX]; }; -static struct nstoken *create_netns(void) -{ - SYS(fail, "ip netns add %s", NS_TEST); - SYS(fail, "ip -net %s link set dev lo up", NS_TEST); - - return open_netns(NS_TEST); -fail: - return NULL; -} - -static void cleanup_netns(struct nstoken *nstoken) -{ - if (nstoken) - close_netns(nstoken); - - SYS_NOFAIL("ip netns del %s", NS_TEST); -} - static int start_mptcp_server(int family, const char *addr_str, __u16 port, int timeout_ms) { @@ -206,15 +188,15 @@ out: static void test_base(void) { - struct nstoken *nstoken = NULL; + struct netns_obj *netns = NULL; int server_fd, cgroup_fd; cgroup_fd = test__join_cgroup("/mptcp"); if (!ASSERT_GE(cgroup_fd, 0, "test__join_cgroup")) return; - nstoken = create_netns(); - if (!ASSERT_OK_PTR(nstoken, "create_netns")) + netns = netns_new(NS_TEST, true); + if (!ASSERT_OK_PTR(netns, "netns_new")) goto fail; /* without MPTCP */ @@ -237,7 +219,7 @@ with_mptcp: close(server_fd); fail: - cleanup_netns(nstoken); + netns_free(netns); close(cgroup_fd); } @@ -322,21 +304,21 @@ out: static void test_mptcpify(void) { - struct nstoken *nstoken = NULL; + struct netns_obj *netns = NULL; int cgroup_fd; cgroup_fd = test__join_cgroup("/mptcpify"); if (!ASSERT_GE(cgroup_fd, 0, "test__join_cgroup")) return; - nstoken = create_netns(); - if (!ASSERT_OK_PTR(nstoken, "create_netns")) + netns = netns_new(NS_TEST, true); + if (!ASSERT_OK_PTR(netns, "netns_new")) goto fail; ASSERT_OK(run_mptcpify(cgroup_fd), "run_mptcpify"); fail: - cleanup_netns(nstoken); + netns_free(netns); close(cgroup_fd); } @@ -414,7 +396,7 @@ close_server: static void test_subflow(void) { struct mptcp_subflow *skel; - struct nstoken *nstoken; + struct netns_obj *netns; int cgroup_fd; cgroup_fd = test__join_cgroup("/mptcp_subflow"); @@ -437,8 +419,8 @@ static void test_subflow(void) if (!ASSERT_OK_PTR(skel->links._getsockopt_subflow, "attach _getsockopt_subflow")) goto skel_destroy; - nstoken = create_netns(); - if (!ASSERT_OK_PTR(nstoken, "create_netns: mptcp_subflow")) + netns = netns_new(NS_TEST, true); + if (!ASSERT_OK_PTR(netns, "netns_new: mptcp_subflow")) goto skel_destroy; if (endpoint_init("subflow") < 0) @@ -447,7 +429,7 @@ static void test_subflow(void) run_subflow(); close_netns: - cleanup_netns(nstoken); + netns_free(netns); skel_destroy: mptcp_subflow__destroy(skel); close_cgroup: -- cgit v1.2.3 From f72aa1b276281b4e4f75261af8425bc99d903f3e Mon Sep 17 00:00:00 2001 From: "Matthieu Baerts (NGI0)" Date: Mon, 4 Nov 2024 12:34:26 +0100 Subject: selftests: net: include lib/sh/*.sh with lib.sh Recently, the net/lib.sh file has been modified to include defer.sh from net/lib/sh/ directory. The Makefile from net/lib has been modified accordingly, but not the ones from the sub-targets using net/lib.sh. Because of that, the new file is not installed as expected when installing the Forwarding, MPTCP, and Netfilter targets, e.g. # make -C tools/testing/selftests TARGETS=net/mptcp install \ INSTALL_PATH=/tmp/kself # cd /tmp/kself/ # ./run_kselftest.sh -c net/mptcp TAP version 13 1..7 # timeout set to 1800 # selftests: net/mptcp: mptcp_connect.sh # ./../lib.sh: line 5: /tmp/kself/net/lib/sh/defer.sh: No such file or directory # (...) This can be fixed simply by adding all the .sh files from net/lib/sh directory to the TEST_INCLUDES variable in the different Makefile's. Fixes: a6e263f125cd ("selftests: net: lib: Introduce deferred commands") Signed-off-by: Matthieu Baerts (NGI0) Reviewed-by: Petr Machata Link: https://patch.msgid.link/20241104-net-next-selftests-lib-sh-deps-v1-1-7c9f7d939fc2@kernel.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/forwarding/Makefile | 3 ++- tools/testing/selftests/net/mptcp/Makefile | 2 +- tools/testing/selftests/net/netfilter/Makefile | 3 ++- 3 files changed, 5 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/forwarding/Makefile b/tools/testing/selftests/net/forwarding/Makefile index 224346426ef2..7d885cff8d79 100644 --- a/tools/testing/selftests/net/forwarding/Makefile +++ b/tools/testing/selftests/net/forwarding/Makefile @@ -126,6 +126,7 @@ TEST_FILES := devlink_lib.sh \ tc_common.sh TEST_INCLUDES := \ - ../lib.sh + ../lib.sh \ + $(wildcard ../lib/sh/*.sh) include ../../lib.mk diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile index 5d796622e730..8e3fc05a5397 100644 --- a/tools/testing/selftests/net/mptcp/Makefile +++ b/tools/testing/selftests/net/mptcp/Makefile @@ -11,7 +11,7 @@ TEST_GEN_FILES = mptcp_connect pm_nl_ctl mptcp_sockopt mptcp_inq TEST_FILES := mptcp_lib.sh settings -TEST_INCLUDES := ../lib.sh ../net_helper.sh +TEST_INCLUDES := ../lib.sh $(wildcard ../lib/sh/*.sh) ../net_helper.sh EXTRA_CLEAN := *.pcap diff --git a/tools/testing/selftests/net/netfilter/Makefile b/tools/testing/selftests/net/netfilter/Makefile index 542f7886a0bc..9d009f74cfc2 100644 --- a/tools/testing/selftests/net/netfilter/Makefile +++ b/tools/testing/selftests/net/netfilter/Makefile @@ -55,4 +55,5 @@ TEST_FILES := lib.sh TEST_FILES += packetdrill TEST_INCLUDES := \ - ../lib.sh + ../lib.sh \ + $(wildcard ../lib/sh/*.sh) -- cgit v1.2.3 From f8f55e9ec73f0a07e55fd91ce82fdca0796ad66a Mon Sep 17 00:00:00 2001 From: Lorenzo Stoakes Date: Tue, 24 Sep 2024 19:59:11 +0100 Subject: selftests/mm: add pkey_sighandler_xx, hugetlb_dio to .gitignore Commit 6998a73efbb8 ("selftests/mm: Add new testcases for pkeys") and commit 3a103b5315b7 ("selftest: mm: Test if hugepage does not get leaked during __bio_release_pages()") generate test binaries hugetlb_dio, pkey_sighandler_tests_32 and pkey_sighandler_tests_64 but did not add these to .gitignore. Correct this. Link: https://lkml.kernel.org/r/20240924185911.117937-1-lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes Cc: Donet Tom Cc: Keith Lucas Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/mm/.gitignore | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/mm/.gitignore b/tools/testing/selftests/mm/.gitignore index da030b43e43b..689bbd520296 100644 --- a/tools/testing/selftests/mm/.gitignore +++ b/tools/testing/selftests/mm/.gitignore @@ -51,3 +51,6 @@ hugetlb_madv_vs_map mseal_test seal_elf droppable +hugetlb_dio +pkey_sighandler_tests_32 +pkey_sighandler_tests_64 -- cgit v1.2.3 From 3b2faed068b9e736402f0b6f98fd68a177f619ec Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Thu, 26 Sep 2024 17:20:43 +0200 Subject: selftests/mm: hugetlb_fault_after_madv: use default hugetlb page size Patch series "selftests/mm: hugetlb_fault_after_madv improvements". Mario brought to my attention that the hugetlb_fault_after_madv test is currently always skipped on s390x. Let's adjust the test to be independent of the default hugetlb page size and while at it, also improve the test output. This patch (of 2): We currently assume that the hugetlb page size is 2 MiB, which is why we mmap() a 2 MiB range. Is the default hugetlb size is larger, mmap() will fail because the range is not suitable. If the default hugetlb size is smaller (e.g., s390x), mmap() will fail because we would need more than one hugetlb page, but just asserted that we have exactly one. So let's simply use the default hugetlb page size instead of hard-coded 2 MiB, so the test isn't unconditionally skipped on architectures like s390x. Before this patch on s390x: $ ./hugetlb_fault_after_madv 1..0 # SKIP Failed to allocated huge page With this change on s390x: $ ./hugetlb_fault_after_madv While at it, make "huge_ptr" static. Link: https://lkml.kernel.org/r/20240926152044.2205129-1-david@redhat.com Link: https://lkml.kernel.org/r/20240926152044.2205129-2-david@redhat.com Signed-off-by: David Hildenbrand Reported-by: Mario Casquero Tested-by: Mario Casquero Reviewed-by: Shuah Khan Reviewed-by: Breno Leitao Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/mm/hugetlb_fault_after_madv.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/mm/hugetlb_fault_after_madv.c b/tools/testing/selftests/mm/hugetlb_fault_after_madv.c index 73b81c632366..ff3ba675278d 100644 --- a/tools/testing/selftests/mm/hugetlb_fault_after_madv.c +++ b/tools/testing/selftests/mm/hugetlb_fault_after_madv.c @@ -9,10 +9,10 @@ #include "vm_util.h" #include "../kselftest.h" -#define MMAP_SIZE (1 << 21) #define INLOOP_ITER 100 -char *huge_ptr; +static char *huge_ptr; +static size_t huge_page_size; /* Touch the memory while it is being madvised() */ void *touch(void *unused) @@ -30,7 +30,7 @@ void *madv(void *unused) usleep(rand() % 10); for (int i = 0; i < INLOOP_ITER; i++) - madvise(huge_ptr, MMAP_SIZE, MADV_DONTNEED); + madvise(huge_ptr, huge_page_size, MADV_DONTNEED); return NULL; } @@ -47,6 +47,10 @@ int main(void) srand(getpid()); + huge_page_size = default_huge_page_size(); + if (!huge_page_size) + ksft_exit_skip("Could not detect default hugetlb page size."); + free_hugepages = get_free_hugepages(); if (free_hugepages != 1) { ksft_exit_skip("This test needs one and only one page to execute. Got %lu\n", @@ -54,7 +58,7 @@ int main(void) } while (max--) { - huge_ptr = mmap(NULL, MMAP_SIZE, PROT_READ | PROT_WRITE, + huge_ptr = mmap(NULL, huge_page_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0); @@ -66,7 +70,7 @@ int main(void) pthread_join(thread1, NULL); pthread_join(thread2, NULL); - munmap(huge_ptr, MMAP_SIZE); + munmap(huge_ptr, huge_page_size); } return KSFT_PASS; -- cgit v1.2.3 From f33cea94e37ce10e27b192e3c5e80ff685ac7b1f Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Thu, 26 Sep 2024 17:20:44 +0200 Subject: selftests/mm: hugetlb_fault_after_madv: improve test output Let's improve the test output. For example, print the proper test result. Install a SIGBUS handler to catch any SIGBUS instead of crashing the test on failure. With unsuitable hugetlb page count: $ ./hugetlb_fault_after_madv TAP version 13 1..1 # [INFO] detected default hugetlb page size: 2048 KiB ok 2 # SKIP This test needs one and only one page to execute. Got 0 # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:1 error:0 On a failure: $ ./hugetlb_fault_after_madv TAP version 13 1..1 not ok 1 SIGBUS behavior Bail out! 1 out of 1 tests failed On success: $ ./hugetlb_fault_after_madv TAP version 13 1..1 # [INFO] detected default hugetlb page size: 2048 KiB ok 1 SIGBUS behavior # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0 Link: https://lkml.kernel.org/r/20240926152044.2205129-3-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Breno Leitao Tested-by: Mario Casquero Cc: Shuah Khan Cc: Shuah Khan Signed-off-by: Andrew Morton --- .../selftests/mm/hugetlb_fault_after_madv.c | 34 +++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/mm/hugetlb_fault_after_madv.c b/tools/testing/selftests/mm/hugetlb_fault_after_madv.c index ff3ba675278d..e2640529dbb2 100644 --- a/tools/testing/selftests/mm/hugetlb_fault_after_madv.c +++ b/tools/testing/selftests/mm/hugetlb_fault_after_madv.c @@ -5,6 +5,8 @@ #include #include #include +#include +#include #include "vm_util.h" #include "../kselftest.h" @@ -14,11 +16,25 @@ static char *huge_ptr; static size_t huge_page_size; +static sigjmp_buf sigbuf; +static bool sigbus_triggered; + +static void signal_handler(int signal) +{ + if (signal == SIGBUS) { + sigbus_triggered = true; + siglongjmp(sigbuf, 1); + } +} + /* Touch the memory while it is being madvised() */ void *touch(void *unused) { char *ptr = (char *)huge_ptr; + if (sigsetjmp(sigbuf, 1)) + return NULL; + for (int i = 0; i < INLOOP_ITER; i++) ptr[0] = '.'; @@ -44,13 +60,23 @@ int main(void) * interactions */ int max = 10000; + int err; + + ksft_print_header(); + ksft_set_plan(1); srand(getpid()); + if (signal(SIGBUS, signal_handler) == SIG_ERR) + ksft_exit_skip("Could not register signal handler."); + huge_page_size = default_huge_page_size(); if (!huge_page_size) ksft_exit_skip("Could not detect default hugetlb page size."); + ksft_print_msg("[INFO] detected default hugetlb page size: %zu KiB\n", + huge_page_size / 1024); + free_hugepages = get_free_hugepages(); if (free_hugepages != 1) { ksft_exit_skip("This test needs one and only one page to execute. Got %lu\n", @@ -73,5 +99,11 @@ int main(void) munmap(huge_ptr, huge_page_size); } - return KSFT_PASS; + ksft_test_result(!sigbus_triggered, "SIGBUS behavior\n"); + + err = ksft_get_fail_cnt(); + if (err) + ksft_exit_fail_msg("%d out of %d tests failed\n", + err, ksft_test_num()); + ksft_exit_pass(); } -- cgit v1.2.3 From 12833a732346dcf4e3bde55d6556fedf90743656 Mon Sep 17 00:00:00 2001 From: Ba Jing Date: Tue, 24 Sep 2024 10:14:26 +0800 Subject: selftests/damon/access_memory_even: remove unused variables By reading the code, I found these variables are never referenced in the code. Just remove them. Link: https://lkml.kernel.org/r/20240924021426.1980-1-bajing@cmss.chinamobile.com Signed-off-by: Ba Jing Reviewed-by: SeongJae Park Reviewed-by: Dev Jain Reviewed-by: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/damon/access_memory_even.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/damon/access_memory_even.c b/tools/testing/selftests/damon/access_memory_even.c index 3be121487432..a9f4e9aaf3a9 100644 --- a/tools/testing/selftests/damon/access_memory_even.c +++ b/tools/testing/selftests/damon/access_memory_even.c @@ -14,10 +14,8 @@ int main(int argc, char *argv[]) { char **regions; - clock_t start_clock; int nr_regions; int sz_region; - int access_time_ms; int i; if (argc != 3) { -- cgit v1.2.3 From d967757d288182522ca263a3d4472101d15a2bfb Mon Sep 17 00:00:00 2001 From: Yafang Shao Date: Mon, 7 Oct 2024 22:49:08 +0800 Subject: bpftool: ensure task comm is always NUL-terminated Let's explicitly ensure the destination string is NUL-terminated. This way, it won't be affected by changes to the source string. Link: https://lkml.kernel.org/r/20241007144911.27693-5-laoar.shao@gmail.com Signed-off-by: Yafang Shao Reviewed-by: Quentin Monnet Cc: Alejandro Colomar Cc: Alexander Viro Cc: Alexei Starovoitov Cc: Andy Shevchenko Cc: Catalin Marinas Cc: Christian Brauner Cc: Daniel Vetter Cc: David Airlie Cc: Eric Biederman Cc: Eric Paris Cc: James Morris Cc: Jan Kara Cc: Justin Stitt Cc: Kees Cook Cc: Linus Torvalds Cc: Maarten Lankhorst Cc: Matthew Wilcox Cc: Matus Jokay Cc: Maxime Ripard Cc: Ondrej Mosnacek Cc: Paul Moore Cc: "Serge E. Hallyn" Cc: Simon Horman Cc: Stephen Smalley Cc: Steven Rostedt (Google) Cc: Tetsuo Handa Cc: Thomas Zimmermann Signed-off-by: Andrew Morton --- tools/bpf/bpftool/pids.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/bpf/bpftool/pids.c b/tools/bpf/bpftool/pids.c index 9b898571b49e..23f488cf1740 100644 --- a/tools/bpf/bpftool/pids.c +++ b/tools/bpf/bpftool/pids.c @@ -54,6 +54,7 @@ static void add_ref(struct hashmap *map, struct pid_iter_entry *e) ref = &refs->refs[refs->ref_cnt]; ref->pid = e->pid; memcpy(ref->comm, e->comm, sizeof(ref->comm)); + ref->comm[sizeof(ref->comm) - 1] = '\0'; refs->ref_cnt++; return; @@ -77,6 +78,7 @@ static void add_ref(struct hashmap *map, struct pid_iter_entry *e) ref = &refs->refs[0]; ref->pid = e->pid; memcpy(ref->comm, e->comm, sizeof(ref->comm)); + ref->comm[sizeof(ref->comm) - 1] = '\0'; refs->ref_cnt = 1; refs->has_bpf_cookie = e->has_bpf_cookie; refs->bpf_cookie = e->bpf_cookie; -- cgit v1.2.3 From 8801c35c3672c8492824f5d3c4d3b37f43ed63c3 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Fri, 11 Oct 2024 16:51:55 -0600 Subject: tools: fix -Wunused-result in linux.c Fix the following -Wunused-result warnings on posix_memalign() return values and add error handling. ./shared/linux.c:100:25: warning: ignoring return value of `posix_memalign' declared with attribute `warn_unused_result' [-Wunused-result] 100 | posix_memalign(&p, cachep->align, cachep->size); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../shared/linux.c: In function `kmem_cache_alloc_bulk': ../shared/linux.c:198:33: warning: ignoring return value of `posix_memalign' declared with attribute `warn_unused_result' [-Wunused-result] 198 | posix_memalign(&p[i], cachep->align, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 199 | cachep->size); | ~~~~~~~~~~~~~ Link: https://lkml.kernel.org/r/20241011225155.27607-1-skhan@linuxfoundation.org Signed-off-by: Shuah Khan Reviewed-by: Lorenzo Stoakes Reviewed-by: Liam R. Howlett Cc: Sidhartha Kumar Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- tools/testing/shared/linux.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/shared/linux.c b/tools/testing/shared/linux.c index 17263696b5d8..66dbb362385f 100644 --- a/tools/testing/shared/linux.c +++ b/tools/testing/shared/linux.c @@ -96,10 +96,13 @@ void *kmem_cache_alloc_lru(struct kmem_cache *cachep, struct list_lru *lru, p = node; } else { pthread_mutex_unlock(&cachep->lock); - if (cachep->align) - posix_memalign(&p, cachep->align, cachep->size); - else + if (cachep->align) { + if (posix_memalign(&p, cachep->align, cachep->size) < 0) + return NULL; + } else { p = malloc(cachep->size); + } + if (cachep->ctor) cachep->ctor(p); else if (gfp & __GFP_ZERO) @@ -195,8 +198,9 @@ int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size, } if (cachep->align) { - posix_memalign(&p[i], cachep->align, - cachep->size); + if (posix_memalign(&p[i], cachep->align, + cachep->size) < 0) + break; } else { p[i] = malloc(cachep->size); if (!p[i]) -- cgit v1.2.3 From ff1a39c3f86c4d998630645f6778a622a993fb8b Mon Sep 17 00:00:00 2001 From: Kuan-Wei Chiu Date: Sat, 12 Oct 2024 12:28:27 +0800 Subject: tools/lib/list_sort: remove unnecessary header includes Since lib/list_sort.c no longer requires ARRAY_SIZE() and memset(), the includes for kernel.h, bug.h, and string.h have been removed. Similarly, tools/lib/list_sort.c also does not need to include these headers, so they have been removed as well. Link: https://lkml.kernel.org/r/20241012042828.471614-3-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Arnaldo Carvalho de Melo Cc: Ching-Chun (Jim) Huang Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: "Liang, Kan" Cc: Mark Rutland Cc: Peter Zijlstra Signed-off-by: Andrew Morton --- tools/lib/list_sort.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'tools') diff --git a/tools/lib/list_sort.c b/tools/lib/list_sort.c index 69affa251fa7..bb99e493dcd1 100644 --- a/tools/lib/list_sort.c +++ b/tools/lib/list_sort.c @@ -1,8 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 -#include #include #include -#include #include #include -- cgit v1.2.3 From 8f0d91f41000e769f16b62a4b44f1f6da6db905b Mon Sep 17 00:00:00 2001 From: Kuan-Wei Chiu Date: Sat, 12 Oct 2024 12:28:28 +0800 Subject: perf tools: update expected diff for lib/list_sort.c Since there are no longer any header include differences between lib/list_sort.c and tools/lib/list_sort.c, update the expected diff in check-header_ignore_hunks accordingly. Link: https://lkml.kernel.org/r/20241012042828.471614-4-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Arnaldo Carvalho de Melo Cc: Ching-Chun (Jim) Huang Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: "Liang, Kan" Cc: Mark Rutland Cc: Peter Zijlstra Signed-off-by: Andrew Morton --- tools/perf/check-header_ignore_hunks/lib/list_sort.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) (limited to 'tools') diff --git a/tools/perf/check-header_ignore_hunks/lib/list_sort.c b/tools/perf/check-header_ignore_hunks/lib/list_sort.c index 32d98cb34f80..b7316d29857d 100644 --- a/tools/perf/check-header_ignore_hunks/lib/list_sort.c +++ b/tools/perf/check-header_ignore_hunks/lib/list_sort.c @@ -1,11 +1,4 @@ -@@ -1,5 +1,6 @@ - // SPDX-License-Identifier: GPL-2.0 - #include -+#include - #include - #include - #include -@@ -52,6 +53,7 @@ +@@ -50,6 +50,7 @@ struct list_head *a, struct list_head *b) { struct list_head *tail = head; @@ -13,7 +6,7 @@ for (;;) { /* if equal, take 'a' -- important for sort stability */ -@@ -77,6 +79,15 @@ +@@ -75,6 +76,15 @@ /* Finish linking remainder of list b on to tail */ tail->next = b; do { -- cgit v1.2.3 From fc49b804967e5b1cc1665efd4de112945e1ab4c6 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 4 Nov 2024 15:25:24 +0100 Subject: selftests: netfilter: run conntrack_dump_flush in netns This test will fail if the initial namespace has conntrack active due to unexpected number of flows returned on dump: conntrack_dump_flush.c:451:test_flush_by_zone:Expected ret (7) == 2 (2) test_flush_by_zone: Test failed FAIL conntrack_dump_flush.test_flush_by_zone not ok 2 conntrack_dump_flush.test_flush_by_zone Add a wrapper that unshares this program to avoid this problem. Signed-off-by: Florian Westphal Link: https://patch.msgid.link/20241104142529.2352-1-fw@strlen.de Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/netfilter/Makefile | 4 ++-- tools/testing/selftests/net/netfilter/conntrack_dump_flush.sh | 3 +++ 2 files changed, 5 insertions(+), 2 deletions(-) create mode 100755 tools/testing/selftests/net/netfilter/conntrack_dump_flush.sh (limited to 'tools') diff --git a/tools/testing/selftests/net/netfilter/Makefile b/tools/testing/selftests/net/netfilter/Makefile index 9d009f74cfc2..ffe161fac8b5 100644 --- a/tools/testing/selftests/net/netfilter/Makefile +++ b/tools/testing/selftests/net/netfilter/Makefile @@ -8,6 +8,7 @@ MNL_LDLIBS := $(shell $(HOSTPKG_CONFIG) --libs libmnl 2>/dev/null || echo -lmnl) TEST_PROGS := br_netfilter.sh bridge_brouter.sh TEST_PROGS += br_netfilter_queue.sh +TEST_PROGS += conntrack_dump_flush.sh TEST_PROGS += conntrack_icmp_related.sh TEST_PROGS += conntrack_ipip_mtu.sh TEST_PROGS += conntrack_tcp_unreplied.sh @@ -36,10 +37,9 @@ TEST_PROGS += xt_string.sh TEST_PROGS_EXTENDED = nft_concat_range_perf.sh -TEST_GEN_PROGS = conntrack_dump_flush - TEST_GEN_FILES = audit_logread TEST_GEN_FILES += connect_close nf_queue +TEST_GEN_FILES += conntrack_dump_flush TEST_GEN_FILES += conntrack_reverse_clash TEST_GEN_FILES += sctp_collision diff --git a/tools/testing/selftests/net/netfilter/conntrack_dump_flush.sh b/tools/testing/selftests/net/netfilter/conntrack_dump_flush.sh new file mode 100755 index 000000000000..8b0935385849 --- /dev/null +++ b/tools/testing/selftests/net/netfilter/conntrack_dump_flush.sh @@ -0,0 +1,3 @@ +#!/bin/bash + +exec unshare -n ./conntrack_dump_flush -- cgit v1.2.3 From a84e8c05f58305dfa808bc5465c5175c29d7c9b6 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 4 Nov 2024 15:28:18 +0100 Subject: selftests: netfilter: nft_queue.sh: fix warnings with socat 1.8.0.0 Updated to a more recent socat release and saw this: socat E xioopen_ipdgram_listen(): unknown address family 0 socat W address is opened in read-write mode but only supports read-only First error is avoided via pf=ipv4 option, second one via -u (unidirectional) mode. Signed-off-by: Florian Westphal Link: https://patch.msgid.link/20241104142821.2608-1-fw@strlen.de Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/netfilter/nft_queue.sh | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/netfilter/nft_queue.sh b/tools/testing/selftests/net/netfilter/nft_queue.sh index a9d109fcc15c..785e3875a6da 100755 --- a/tools/testing/selftests/net/netfilter/nft_queue.sh +++ b/tools/testing/selftests/net/netfilter/nft_queue.sh @@ -512,10 +512,10 @@ EOF :> "$TMPFILE1" :> "$TMPFILE2" - timeout 10 ip netns exec "$ns2" socat UDP-LISTEN:12345,fork OPEN:"$TMPFILE1",trunc & + timeout 10 ip netns exec "$ns2" socat UDP-LISTEN:12345,fork,pf=ipv4 OPEN:"$TMPFILE1",trunc & local rpid1=$! - timeout 10 ip netns exec "$ns3" socat UDP-LISTEN:12345,fork OPEN:"$TMPFILE2",trunc & + timeout 10 ip netns exec "$ns3" socat UDP-LISTEN:12345,fork,pf=ipv4 OPEN:"$TMPFILE2",trunc & local rpid2=$! ip netns exec "$nsrouter" ./nf_queue -q 12 -d 1000 & @@ -528,8 +528,8 @@ EOF # Send two packets, one should end up in ns1, other in ns2. # This is because nfqueue will delay packet for long enough so that # second packet will not find existing conntrack entry. - echo "Packet 1" | ip netns exec "$ns1" socat STDIN UDP-DATAGRAM:10.6.6.6:12345,bind=0.0.0.0:55221 - echo "Packet 2" | ip netns exec "$ns1" socat STDIN UDP-DATAGRAM:10.6.6.6:12345,bind=0.0.0.0:55221 + echo "Packet 1" | ip netns exec "$ns1" socat -u STDIN UDP-DATAGRAM:10.6.6.6:12345,bind=0.0.0.0:55221 + echo "Packet 2" | ip netns exec "$ns1" socat -u STDIN UDP-DATAGRAM:10.6.6.6:12345,bind=0.0.0.0:55221 busywait 10000 output_files_written "$TMPFILE1" "$TMPFILE2" -- cgit v1.2.3 From 5fb8e56542a3cf469fdf25d77f50e21cbff3ae7e Mon Sep 17 00:00:00 2001 From: Benjamin Peterson Date: Sun, 3 Nov 2024 20:48:16 +0000 Subject: perf trace: avoid garbage when not printing a trace event's arguments trace__fprintf_tp_fields may not print any tracepoint arguments. E.g., if the argument values are all zero. Previously, this would result in a totally uninitialized buffer being passed to fprintf, which could lead to garbage on the console. Fix the problem by passing the number of initialized bytes fprintf. Fixes: f11b2803bb88 ("perf trace: Allow choosing how to augment the tracepoint arguments") Signed-off-by: Benjamin Peterson Tested-by: Howard Chu Tested-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/20241103204816.7834-1-benjamin@engflow.com Signed-off-by: Namhyung Kim --- tools/perf/builtin-trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index c1e9e14c8686..a661fbd870e7 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -3087,7 +3087,7 @@ static size_t trace__fprintf_tp_fields(struct trace *trace, struct evsel *evsel, printed += syscall_arg_fmt__scnprintf_val(arg, bf + printed, size - printed, &syscall_arg, val); } - return printed + fprintf(trace->output, "%s", bf); + return printed + fprintf(trace->output, "%.*s", (int)printed, bf); } static int trace__event_handler(struct trace *trace, struct evsel *evsel, -- cgit v1.2.3 From 03a942f793ca33653f3fa4bdb377f5d2376e74f6 Mon Sep 17 00:00:00 2001 From: Shivam Chaudhary Date: Tue, 8 Oct 2024 20:22:04 +0530 Subject: Fix typo in vringh_test.c Corrected minor typo in tools/virtio/vringh_test.c: - Fixed "retreives" to "retrieves" Signed-off-by: Shivam Chaudhary Message-Id: <20241008145204.478749-1-cvam0000@gmail.com> Signed-off-by: Michael S. Tsirkin --- tools/virtio/vringh_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/virtio/vringh_test.c b/tools/virtio/vringh_test.c index 43d3a6aa1dcf..b9591223437a 100644 --- a/tools/virtio/vringh_test.c +++ b/tools/virtio/vringh_test.c @@ -519,7 +519,7 @@ int main(int argc, char *argv[]) errx(1, "virtqueue_add_sgs: %i", err); __kmalloc_fake = NULL; - /* Host retreives it. */ + /* Host retrieves it. */ vringh_iov_init(&riov, host_riov, ARRAY_SIZE(host_riov)); vringh_iov_init(&wiov, host_wiov, ARRAY_SIZE(host_wiov)); -- cgit v1.2.3 From 315ad8780a129e82e2c5c65ee6e970d91a577acb Mon Sep 17 00:00:00 2001 From: Rong Xu Date: Sat, 2 Nov 2024 10:51:08 -0700 Subject: kbuild: Add AutoFDO support for Clang build Add the build support for using Clang's AutoFDO. Building the kernel with AutoFDO does not reduce the optimization level from the compiler. AutoFDO uses hardware sampling to gather information about the frequency of execution of different code paths within a binary. This information is then used to guide the compiler's optimization decisions, resulting in a more efficient binary. Experiments showed that the kernel can improve up to 10% in latency. The support requires a Clang compiler after LLVM 17. This submission is limited to x86 platforms that support PMU features like LBR on Intel machines and AMD Zen3 BRS. Support for SPE on ARM 1, and BRBE on ARM 1 is part of planned future work. Here is an example workflow for AutoFDO kernel: 1) Build the kernel on the host machine with LLVM enabled, for example, $ make menuconfig LLVM=1 Turn on AutoFDO build config: CONFIG_AUTOFDO_CLANG=y With a configuration that has LLVM enabled, use the following command: scripts/config -e AUTOFDO_CLANG After getting the config, build with $ make LLVM=1 2) Install the kernel on the test machine. 3) Run the load tests. The '-c' option in perf specifies the sample event period. We suggest using a suitable prime number, like 500009, for this purpose. For Intel platforms: $ perf record -e BR_INST_RETIRED.NEAR_TAKEN:k -a -N -b -c \ -o -- For AMD platforms: The supported system are: Zen3 with BRS, or Zen4 with amd_lbr_v2 For Zen3: $ cat proc/cpuinfo | grep " brs" For Zen4: $ cat proc/cpuinfo | grep amd_lbr_v2 $ perf record --pfm-events RETIRED_TAKEN_BRANCH_INSTRUCTIONS:k -a \ -N -b -c -o -- 4) (Optional) Download the raw perf file to the host machine. 5) To generate an AutoFDO profile, two offline tools are available: create_llvm_prof and llvm_profgen. The create_llvm_prof tool is part of the AutoFDO project and can be found on GitHub (https://github.com/google/autofdo), version v0.30.1 or later. The llvm_profgen tool is included in the LLVM compiler itself. It's important to note that the version of llvm_profgen doesn't need to match the version of Clang. It needs to be the LLVM 19 release or later, or from the LLVM trunk. $ llvm-profgen --kernel --binary= --perfdata= \ -o or $ create_llvm_prof --binary= --profile= \ --format=extbinary --out= Note that multiple AutoFDO profile files can be merged into one via: $ llvm-profdata merge -o ... 6) Rebuild the kernel using the AutoFDO profile file with the same config as step 1, (Note CONFIG_AUTOFDO_CLANG needs to be enabled): $ make LLVM=1 CLANG_AUTOFDO_PROFILE= Co-developed-by: Han Shen Signed-off-by: Han Shen Signed-off-by: Rong Xu Suggested-by: Sriraman Tallam Suggested-by: Krzysztof Pszeniczny Suggested-by: Nick Desaulniers Suggested-by: Stephane Eranian Tested-by: Yonghong Song Tested-by: Yabin Cui Tested-by: Nathan Chancellor Reviewed-by: Kees Cook Tested-by: Peter Jung Signed-off-by: Masahiro Yamada --- tools/objtool/check.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 6604f5d038aa..4c5229991e1e 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -4557,6 +4557,7 @@ static int validate_ibt(struct objtool_file *file) !strcmp(sec->name, "__jump_table") || !strcmp(sec->name, "__mcount_loc") || !strcmp(sec->name, ".kcfi_traps") || + !strcmp(sec->name, ".llvm.call-graph-profile") || strstr(sec->name, "__patchable_function_entries")) continue; -- cgit v1.2.3 From 18e885099f1c52755f054202525cb60d3edcda44 Mon Sep 17 00:00:00 2001 From: Rong Xu Date: Sat, 2 Nov 2024 10:51:09 -0700 Subject: objtool: Fix unreachable instruction warnings for weak functions In the presence of both weak and strong function definitions, the linker drops the weak symbol in favor of a strong symbol, but leaves the code in place. Code in ignore_unreachable_insn() has some heuristics to suppress the warning, but it does not work when -ffunction-sections is enabled. Suppose function foo has both strong and weak definitions. Case 1: The strong definition has an annotated section name, like .init.text. Only the weak definition will be placed into .text.foo. But since the section has no symbols, there will be no "hole" in the section. Case 2: Both sections are without an annotated section name. Both will be placed into .text.foo section, but there will be only one symbol (the strong one). If the weak code is before the strong code, there is no "hole" as it fails to find the right-most symbol before the offset. The fix is to use the first node to compute the hole if hole.sym is empty. If there is no symbol in the section, the first node will be NULL, in which case, -1 is returned to skip the whole section. Co-developed-by: Han Shen Signed-off-by: Han Shen Signed-off-by: Rong Xu Suggested-by: Sriraman Tallam Suggested-by: Krzysztof Pszeniczny Tested-by: Yonghong Song Tested-by: Yabin Cui Tested-by: Nathan Chancellor Reviewed-by: Kees Cook Acked-by: Josh Poimboeuf Signed-off-by: Masahiro Yamada --- tools/objtool/elf.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c index 3d27983dc908..6f64d611faea 100644 --- a/tools/objtool/elf.c +++ b/tools/objtool/elf.c @@ -224,12 +224,17 @@ int find_symbol_hole_containing(const struct section *sec, unsigned long offset) if (n) return 0; /* not a hole */ - /* didn't find a symbol for which @offset is after it */ - if (!hole.sym) - return 0; /* not a hole */ + /* + * @offset >= sym->offset + sym->len, find symbol after it. + * When hole.sym is empty, use the first node to compute the hole. + * If there is no symbol in the section, the first node will be NULL, + * in which case, -1 is returned to skip the whole section. + */ + if (hole.sym) + n = rb_next(&hole.sym->node); + else + n = rb_first_cached(&sec->symbol_tree); - /* @offset >= sym->offset + sym->len, find symbol after it */ - n = rb_next(&hole.sym->node); if (!n) return -1; /* until end of address space */ -- cgit v1.2.3 From 66c54c20408d994be34be2c070fba08472f69eee Mon Sep 17 00:00:00 2001 From: Zijian Zhang Date: Wed, 6 Nov 2024 22:25:13 +0000 Subject: selftests/bpf: Add txmsg_pass to pull/push/pop in test_sockmap Add txmsg_pass to test_txmsg_pull/push/pop. If txmsg_pass is missing, tx_prog will be NULL, and no program will be attached to the sockmap. As a result, pull/push/pop are never invoked. Fixes: 328aa08a081b ("bpf: Selftests, break down test_sockmap into subtests") Signed-off-by: Zijian Zhang Reviewed-by: John Fastabend Link: https://lore.kernel.org/r/20241106222520.527076-2-zijianzhang@bytedance.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/test_sockmap.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 075c93ed143e..0f065273fde3 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -1596,11 +1596,13 @@ static void test_txmsg_cork_hangs(int cgrp, struct sockmap_options *opt) static void test_txmsg_pull(int cgrp, struct sockmap_options *opt) { /* Test basic start/end */ + txmsg_pass = 1; txmsg_start = 1; txmsg_end = 2; test_send(opt, cgrp); /* Test >4k pull */ + txmsg_pass = 1; txmsg_start = 4096; txmsg_end = 9182; test_send_large(opt, cgrp); @@ -1629,11 +1631,13 @@ static void test_txmsg_pull(int cgrp, struct sockmap_options *opt) static void test_txmsg_pop(int cgrp, struct sockmap_options *opt) { /* Test basic pop */ + txmsg_pass = 1; txmsg_start_pop = 1; txmsg_pop = 2; test_send_many(opt, cgrp); /* Test pop with >4k */ + txmsg_pass = 1; txmsg_start_pop = 4096; txmsg_pop = 4096; test_send_large(opt, cgrp); @@ -1662,11 +1666,13 @@ static void test_txmsg_pop(int cgrp, struct sockmap_options *opt) static void test_txmsg_push(int cgrp, struct sockmap_options *opt) { /* Test basic push */ + txmsg_pass = 1; txmsg_start_push = 1; txmsg_end_push = 1; test_send(opt, cgrp); /* Test push 4kB >4k */ + txmsg_pass = 1; txmsg_start_push = 4096; txmsg_end_push = 4096; test_send_large(opt, cgrp); @@ -1687,6 +1693,7 @@ static void test_txmsg_push(int cgrp, struct sockmap_options *opt) static void test_txmsg_push_pop(int cgrp, struct sockmap_options *opt) { + txmsg_pass = 1; txmsg_start_push = 1; txmsg_end_push = 10; txmsg_start_pop = 5; -- cgit v1.2.3 From 4095031463d4e99b534d2cd82035a417295764ae Mon Sep 17 00:00:00 2001 From: Zijian Zhang Date: Wed, 6 Nov 2024 22:25:14 +0000 Subject: selftests/bpf: Fix SENDPAGE data logic in test_sockmap In the SENDPAGE test, "opt->iov_length * cnt" size of data will be sent cnt times by sendfile. 1. In push/pop tests, they will be invoked cnt times, for the simplicity of msg_verify_data, change chunk_sz to iov_length 2. Change iov_length in test_send_large from 1024 to 8192. We have pop test where txmsg_start_pop is 4096. 4096 > 1024, an error will be returned. Fixes: 328aa08a081b ("bpf: Selftests, break down test_sockmap into subtests") Signed-off-by: Zijian Zhang Reviewed-by: John Fastabend Link: https://lore.kernel.org/r/20241106222520.527076-3-zijianzhang@bytedance.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/test_sockmap.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 0f065273fde3..1d59bed90d80 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -420,16 +420,18 @@ static int msg_loop_sendpage(int fd, int iov_length, int cnt, { bool drop = opt->drop_expected; unsigned char k = 0; + int i, j, fp; FILE *file; - int i, fp; file = tmpfile(); if (!file) { perror("create file for sendpage"); return 1; } - for (i = 0; i < iov_length * cnt; i++, k++) - fwrite(&k, sizeof(char), 1, file); + for (i = 0; i < cnt; i++, k = 0) { + for (j = 0; j < iov_length; j++, k++) + fwrite(&k, sizeof(char), 1, file); + } fflush(file); fseek(file, 0, SEEK_SET); @@ -623,7 +625,9 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, * This is really only useful for testing edge cases in code * paths. */ - total_bytes = (float)iov_count * (float)iov_length * (float)cnt; + total_bytes = (float)iov_length * (float)cnt; + if (!opt->sendpage) + total_bytes *= (float)iov_count; if (txmsg_apply) txmsg_pop_total = txmsg_pop * (total_bytes / txmsg_apply); else @@ -701,7 +705,7 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, if (data) { int chunk_sz = opt->sendpage ? - iov_length * cnt : + iov_length : iov_length * iov_count; errno = msg_verify_data(&msg, recv, chunk_sz, &k, &bytes_cnt); @@ -1466,8 +1470,8 @@ static void test_send_many(struct sockmap_options *opt, int cgrp) static void test_send_large(struct sockmap_options *opt, int cgrp) { - opt->iov_length = 256; - opt->iov_count = 1024; + opt->iov_length = 8192; + opt->iov_count = 32; opt->rate = 2; test_exec(cgrp, opt); } -- cgit v1.2.3 From 523dffccbadea0cfd65f1ff04944b864c558c4a8 Mon Sep 17 00:00:00 2001 From: Zijian Zhang Date: Wed, 6 Nov 2024 22:25:15 +0000 Subject: selftests/bpf: Fix total_bytes in msg_loop_rx in test_sockmap total_bytes in msg_loop_rx should also take push into account, otherwise total_bytes will be a smaller value, which makes the msg_loop_rx end early. Besides, total_bytes has already taken pop into account, so we don't need to subtract some bytes from iov_buf in sendmsg_test. The additional subtraction may make total_bytes a negative number, and msg_loop_rx will just end without checking anything. Fixes: 18d4e900a450 ("bpf: Selftests, improve test_sockmap total bytes counter") Fixes: d69672147faa ("selftests, bpf: Add one test for sockmap with strparser") Signed-off-by: Zijian Zhang Reviewed-by: John Fastabend Link: https://lore.kernel.org/r/20241106222520.527076-4-zijianzhang@bytedance.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/test_sockmap.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 1d59bed90d80..5f4558f1f004 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -606,8 +606,8 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, } clock_gettime(CLOCK_MONOTONIC, &s->end); } else { + float total_bytes, txmsg_pop_total, txmsg_push_total; int slct, recvp = 0, recv, max_fd = fd; - float total_bytes, txmsg_pop_total; int fd_flags = O_NONBLOCK; struct timeval timeout; unsigned char k = 0; @@ -628,10 +628,14 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, total_bytes = (float)iov_length * (float)cnt; if (!opt->sendpage) total_bytes *= (float)iov_count; - if (txmsg_apply) + if (txmsg_apply) { + txmsg_push_total = txmsg_end_push * (total_bytes / txmsg_apply); txmsg_pop_total = txmsg_pop * (total_bytes / txmsg_apply); - else + } else { + txmsg_push_total = txmsg_end_push * cnt; txmsg_pop_total = txmsg_pop * cnt; + } + total_bytes += txmsg_push_total; total_bytes -= txmsg_pop_total; err = clock_gettime(CLOCK_MONOTONIC, &s->start); if (err < 0) @@ -800,8 +804,6 @@ static int sendmsg_test(struct sockmap_options *opt) rxpid = fork(); if (rxpid == 0) { - if (txmsg_pop || txmsg_start_pop) - iov_buf -= (txmsg_pop - txmsg_start_pop + 1); if (opt->drop_expected || txmsg_ktls_skb_drop) _exit(0); -- cgit v1.2.3 From 862087c3d36219ed44569666eb263efc97f00c9a Mon Sep 17 00:00:00 2001 From: Zijian Zhang Date: Wed, 6 Nov 2024 22:25:16 +0000 Subject: selftests/bpf: Add push/pop checking for msg_verify_data in test_sockmap Add push/pop checking for msg_verify_data in test_sockmap, except for pop/push with cork tests, in these tests the logic will be different. 1. With corking, pop/push might not be invoked in each sendmsg, it makes the layout of the received data difficult 2. It makes it hard to calculate the total_bytes in the recvmsg Temporarily skip the data integrity test for these cases now, added a TODO Fixes: ee9b352ce465 ("selftests/bpf: Fix msg_verify_data in test_sockmap") Signed-off-by: Zijian Zhang Reviewed-by: John Fastabend Link: https://lore.kernel.org/r/20241106222520.527076-5-zijianzhang@bytedance.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/test_sockmap.c | 106 +++++++++++++++++++++++++++-- 1 file changed, 101 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 5f4558f1f004..61a747afcd05 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -88,6 +88,10 @@ int ktls; int peek_flag; int skb_use_parser; int txmsg_omit_skb_parser; +int verify_push_start; +int verify_push_len; +int verify_pop_start; +int verify_pop_len; static const struct option long_options[] = { {"help", no_argument, NULL, 'h' }, @@ -514,12 +518,41 @@ unwind_iov: return -ENOMEM; } -/* TODO: Add verification logic for push, pull and pop data */ +/* In push or pop test, we need to do some calculations for msg_verify_data */ +static void msg_verify_date_prep(void) +{ + int push_range_end = txmsg_start_push + txmsg_end_push - 1; + int pop_range_end = txmsg_start_pop + txmsg_pop - 1; + + if (txmsg_end_push && txmsg_pop && + txmsg_start_push <= pop_range_end && txmsg_start_pop <= push_range_end) { + /* The push range and the pop range overlap */ + int overlap_len; + + verify_push_start = txmsg_start_push; + verify_pop_start = txmsg_start_pop; + if (txmsg_start_push < txmsg_start_pop) + overlap_len = min(push_range_end - txmsg_start_pop + 1, txmsg_pop); + else + overlap_len = min(pop_range_end - txmsg_start_push + 1, txmsg_end_push); + verify_push_len = max(txmsg_end_push - overlap_len, 0); + verify_pop_len = max(txmsg_pop - overlap_len, 0); + } else { + /* Otherwise */ + verify_push_start = txmsg_start_push; + verify_pop_start = txmsg_start_pop; + verify_push_len = txmsg_end_push; + verify_pop_len = txmsg_pop; + } +} + static int msg_verify_data(struct msghdr *msg, int size, int chunk_sz, - unsigned char *k_p, int *bytes_cnt_p) + unsigned char *k_p, int *bytes_cnt_p, + int *check_cnt_p, int *push_p) { - int i, j, bytes_cnt = *bytes_cnt_p; + int bytes_cnt = *bytes_cnt_p, check_cnt = *check_cnt_p, push = *push_p; unsigned char k = *k_p; + int i, j; for (i = 0, j = 0; i < msg->msg_iovlen && size; i++, j = 0) { unsigned char *d = msg->msg_iov[i].iov_base; @@ -538,6 +571,37 @@ static int msg_verify_data(struct msghdr *msg, int size, int chunk_sz, } for (; j < msg->msg_iov[i].iov_len && size; j++) { + if (push > 0 && + check_cnt == verify_push_start + verify_push_len - push) { + int skipped; +revisit_push: + skipped = push; + if (j + push >= msg->msg_iov[i].iov_len) + skipped = msg->msg_iov[i].iov_len - j; + push -= skipped; + size -= skipped; + j += skipped - 1; + check_cnt += skipped; + continue; + } + + if (verify_pop_len > 0 && check_cnt == verify_pop_start) { + bytes_cnt += verify_pop_len; + check_cnt += verify_pop_len; + k += verify_pop_len; + + if (bytes_cnt == chunk_sz) { + k = 0; + bytes_cnt = 0; + check_cnt = 0; + push = verify_push_len; + } + + if (push > 0 && + check_cnt == verify_push_start + verify_push_len - push) + goto revisit_push; + } + if (d[j] != k++) { fprintf(stderr, "detected data corruption @iov[%i]:%i %02x != %02x, %02x ?= %02x\n", @@ -545,15 +609,20 @@ static int msg_verify_data(struct msghdr *msg, int size, int chunk_sz, return -EDATAINTEGRITY; } bytes_cnt++; + check_cnt++; if (bytes_cnt == chunk_sz) { k = 0; bytes_cnt = 0; + check_cnt = 0; + push = verify_push_len; } size--; } } *k_p = k; *bytes_cnt_p = bytes_cnt; + *check_cnt_p = check_cnt; + *push_p = push; return 0; } @@ -612,6 +681,8 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, struct timeval timeout; unsigned char k = 0; int bytes_cnt = 0; + int check_cnt = 0; + int push = 0; fd_set w; fcntl(fd, fd_flags); @@ -637,6 +708,10 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, } total_bytes += txmsg_push_total; total_bytes -= txmsg_pop_total; + if (data) { + msg_verify_date_prep(); + push = verify_push_len; + } err = clock_gettime(CLOCK_MONOTONIC, &s->start); if (err < 0) perror("recv start time"); @@ -712,7 +787,8 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, iov_length : iov_length * iov_count; - errno = msg_verify_data(&msg, recv, chunk_sz, &k, &bytes_cnt); + errno = msg_verify_data(&msg, recv, chunk_sz, &k, &bytes_cnt, + &check_cnt, &push); if (errno) { perror("data verify msg failed"); goto out_errno; @@ -722,7 +798,9 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, recvp, chunk_sz, &k, - &bytes_cnt); + &bytes_cnt, + &check_cnt, + &push); if (errno) { perror("data verify msg_peek failed"); goto out_errno; @@ -1636,6 +1714,8 @@ static void test_txmsg_pull(int cgrp, struct sockmap_options *opt) static void test_txmsg_pop(int cgrp, struct sockmap_options *opt) { + bool data = opt->data_test; + /* Test basic pop */ txmsg_pass = 1; txmsg_start_pop = 1; @@ -1654,6 +1734,12 @@ static void test_txmsg_pop(int cgrp, struct sockmap_options *opt) txmsg_pop = 2; test_send_many(opt, cgrp); + /* TODO: Test for pop + cork should be different, + * - It makes the layout of the received data difficult + * - It makes it hard to calculate the total_bytes in the recvmsg + * Temporarily skip the data integrity test for this case now. + */ + opt->data_test = false; /* Test pop + cork */ txmsg_redir = 0; txmsg_cork = 512; @@ -1667,10 +1753,13 @@ static void test_txmsg_pop(int cgrp, struct sockmap_options *opt) txmsg_start_pop = 1; txmsg_pop = 2; test_send_many(opt, cgrp); + opt->data_test = data; } static void test_txmsg_push(int cgrp, struct sockmap_options *opt) { + bool data = opt->data_test; + /* Test basic push */ txmsg_pass = 1; txmsg_start_push = 1; @@ -1689,12 +1778,19 @@ static void test_txmsg_push(int cgrp, struct sockmap_options *opt) txmsg_end_push = 2; test_send_many(opt, cgrp); + /* TODO: Test for push + cork should be different, + * - It makes the layout of the received data difficult + * - It makes it hard to calculate the total_bytes in the recvmsg + * Temporarily skip the data integrity test for this case now. + */ + opt->data_test = false; /* Test push + cork */ txmsg_redir = 0; txmsg_cork = 512; txmsg_start_push = 1; txmsg_end_push = 2; test_send_many(opt, cgrp); + opt->data_test = data; } static void test_txmsg_push_pop(int cgrp, struct sockmap_options *opt) -- cgit v1.2.3 From 47eae080410b1de1d7f6c79b511aaa6be865c61e Mon Sep 17 00:00:00 2001 From: Zijian Zhang Date: Wed, 6 Nov 2024 22:25:17 +0000 Subject: selftests/bpf: Add more tests for test_txmsg_push_pop in test_sockmap Add more tests for test_txmsg_push_pop in test_sockmap for better coverage Signed-off-by: Zijian Zhang Reviewed-by: John Fastabend Link: https://lore.kernel.org/r/20241106222520.527076-6-zijianzhang@bytedance.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/test_sockmap.c | 37 ++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 61a747afcd05..e5c7ecbe57e3 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -1795,12 +1795,49 @@ static void test_txmsg_push(int cgrp, struct sockmap_options *opt) static void test_txmsg_push_pop(int cgrp, struct sockmap_options *opt) { + /* Test push/pop range overlapping */ txmsg_pass = 1; txmsg_start_push = 1; txmsg_end_push = 10; txmsg_start_pop = 5; txmsg_pop = 4; test_send_large(opt, cgrp); + + txmsg_pass = 1; + txmsg_start_push = 1; + txmsg_end_push = 10; + txmsg_start_pop = 5; + txmsg_pop = 16; + test_send_large(opt, cgrp); + + txmsg_pass = 1; + txmsg_start_push = 5; + txmsg_end_push = 4; + txmsg_start_pop = 1; + txmsg_pop = 10; + test_send_large(opt, cgrp); + + txmsg_pass = 1; + txmsg_start_push = 5; + txmsg_end_push = 16; + txmsg_start_pop = 1; + txmsg_pop = 10; + test_send_large(opt, cgrp); + + /* Test push/pop range non-overlapping */ + txmsg_pass = 1; + txmsg_start_push = 1; + txmsg_end_push = 10; + txmsg_start_pop = 16; + txmsg_pop = 4; + test_send_large(opt, cgrp); + + txmsg_pass = 1; + txmsg_start_push = 16; + txmsg_end_push = 10; + txmsg_start_pop = 5; + txmsg_pop = 4; + test_send_large(opt, cgrp); } static void test_txmsg_apply(int cgrp, struct sockmap_options *opt) -- cgit v1.2.3 From 52ed077aa6336dbef83a2d6d21c52d1706fb7f16 Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Tue, 5 Nov 2024 19:23:51 +0100 Subject: selftests: net: really check for bg process completion A recent refactor transformed the check for process completion in a true statement, due to a typo. As a result, the relevant test-case is unable to catch the regression it was supposed to detect. Restore the correct condition. Fixes: 691bb4e49c98 ("selftests: net: avoid just another constant wait") Signed-off-by: Paolo Abeni Reviewed-by: David Ahern Link: https://patch.msgid.link/0e6f213811f8e93a235307e683af8225cc6277ae.1730828007.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/pmtu.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh index 569bce8b6383..6c651c880fe8 100755 --- a/tools/testing/selftests/net/pmtu.sh +++ b/tools/testing/selftests/net/pmtu.sh @@ -2056,7 +2056,7 @@ check_running() { pid=${1} cmd=${2} - [ "$(cat /proc/${pid}/cmdline 2>/dev/null | tr -d '\0')" = "{cmd}" ] + [ "$(cat /proc/${pid}/cmdline 2>/dev/null | tr -d '\0')" = "${cmd}" ] } test_cleanup_vxlanX_exception() { -- cgit v1.2.3 From 0f85eb3395c74d7cc823169bbacc670c6645ae80 Mon Sep 17 00:00:00 2001 From: Jiazi Li Date: Wed, 26 Jun 2024 12:06:31 -0400 Subject: maple_tree: add some alloc node test case Add some maple_tree alloc node tese case. Link: https://lkml.kernel.org/r/20240626160631.3636515-2-Liam.Howlett@oracle.com Signed-off-by: Jiazi Li Signed-off-by: Liam R. Howlett Suggested-by: Liam R. Howlett Cc: Wei Yang Signed-off-by: Andrew Morton --- tools/testing/radix-tree/maple.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'tools') diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c index 551ae6898c1d..bc30050227fd 100644 --- a/tools/testing/radix-tree/maple.c +++ b/tools/testing/radix-tree/maple.c @@ -462,6 +462,28 @@ static noinline void __init check_new_node(struct maple_tree *mt) MT_BUG_ON(mt, mas_allocated(&mas) != 10 + MAPLE_ALLOC_SLOTS - 1); mas_destroy(&mas); + mas.node = MA_ERROR(-ENOMEM); + mas_node_count(&mas, MAPLE_ALLOC_SLOTS + 1); /* Request */ + mas_nomem(&mas, GFP_KERNEL); /* Fill request */ + MT_BUG_ON(mt, mas_allocated(&mas) != MAPLE_ALLOC_SLOTS + 1); + mas.node = MA_ERROR(-ENOMEM); + mas_node_count(&mas, MAPLE_ALLOC_SLOTS * 2 + 2); /* Request */ + mas_nomem(&mas, GFP_KERNEL); /* Fill request */ + mas.status = ma_start; + MT_BUG_ON(mt, mas_allocated(&mas) != MAPLE_ALLOC_SLOTS * 2 + 2); + mas_destroy(&mas); + + mas.node = MA_ERROR(-ENOMEM); + mas_node_count(&mas, MAPLE_ALLOC_SLOTS * 2 + 1); /* Request */ + mas_nomem(&mas, GFP_KERNEL); /* Fill request */ + MT_BUG_ON(mt, mas_allocated(&mas) != MAPLE_ALLOC_SLOTS * 2 + 1); + mas.node = MA_ERROR(-ENOMEM); + mas_node_count(&mas, MAPLE_ALLOC_SLOTS * 3 + 2); /* Request */ + mas_nomem(&mas, GFP_KERNEL); /* Fill request */ + mas.status = ma_start; + MT_BUG_ON(mt, mas_allocated(&mas) != MAPLE_ALLOC_SLOTS * 3 + 2); + mas_destroy(&mas); + mtree_unlock(mt); } -- cgit v1.2.3 From 7146de5ff504003ed6f61c39c379b5777e7bed29 Mon Sep 17 00:00:00 2001 From: Lorenzo Stoakes Date: Thu, 17 Oct 2024 17:56:38 +0100 Subject: tools: testing: fix phys_addr_t size on 64-bit systems The phys_addr_t size is predicated on whether CONFIG_PHYS_ADDR_T_64BIT is set or not. In the VMA tests, virt_to_phys() from tools/include/linux casts a volatile void * pointer to phys_addr_t, if CONFIG_PHYS_ADDR_T_64BIT is not set, this will be 32-bit and trigger a warning. Obviously this might also lead to truncation, which we would rather avoid. Fix this by adjusting the generation of generated/bit-length.h to generate a CONFIG_PHYS_ADDR_T{bits}BIT define. This does result in the generation of the useless CONFIG_PHYS_ADDR_T_32BIT define for 32-bit systems, but this should have no effect, and makes implementation of this easier. This resolves the issue and the warning. [lorenzo.stoakes@oracle.com: VMA tests not properly importing bit-length.h] Link: https://lkml.kernel.org/r/a6183df9-3108-4d59-8128-4fc6c14e22a5@lucifer.local Link: https://lkml.kernel.org/r/20241017165638.95602-1-lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes Tested-by: Liam R. Howlett Reviewed-by: Liam R. Howlett Cc: Jann Horn Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- tools/testing/shared/shared.mk | 1 + tools/testing/vma/vma.c | 2 ++ 2 files changed, 3 insertions(+) (limited to 'tools') diff --git a/tools/testing/shared/shared.mk b/tools/testing/shared/shared.mk index a6bc51d0b0bf..923ee2492256 100644 --- a/tools/testing/shared/shared.mk +++ b/tools/testing/shared/shared.mk @@ -69,6 +69,7 @@ generated/bit-length.h: FORCE @if ! grep -qws CONFIG_$(LONG_BIT)BIT generated/bit-length.h; then \ echo "Generating $@"; \ echo "#define CONFIG_$(LONG_BIT)BIT 1" > $@; \ + echo "#define CONFIG_PHYS_ADDR_T_$(LONG_BIT)BIT 1" >> $@; \ fi FORCE: ; diff --git a/tools/testing/vma/vma.c b/tools/testing/vma/vma.c index b33b47342d41..8fab5e13c7c3 100644 --- a/tools/testing/vma/vma.c +++ b/tools/testing/vma/vma.c @@ -4,6 +4,8 @@ #include #include +#include "generated/bit-length.h" + #include "maple-shared.h" #include "vma_internal.h" -- cgit v1.2.3 From 3f1f947a322d2bdf0b16ff9158ce6be7cc23b974 Mon Sep 17 00:00:00 2001 From: Liu Jing Date: Tue, 22 Oct 2024 09:25:26 +0800 Subject: tools/mm: free the allocated memory The comm_str memory needs to be freed if the search_pattern function call fails in get_comm [akpm@linux-foundation.org: fix whitespace] Link: https://lkml.kernel.org/r/20241022012526.7597-1-liujing@cmss.chinamobile.com Signed-off-by: Liu Jing Signed-off-by: Andrew Morton --- tools/mm/page_owner_sort.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/mm/page_owner_sort.c b/tools/mm/page_owner_sort.c index e1f264444342..880e36df0c11 100644 --- a/tools/mm/page_owner_sort.c +++ b/tools/mm/page_owner_sort.c @@ -377,6 +377,7 @@ static char *get_comm(char *buf) if (errno != 0) { if (debug_on) fprintf(stderr, "wrong comm in follow buf:\n%s\n", buf); + free(comm_str); return NULL; } -- cgit v1.2.3 From c14f8046cd7c353176c53d2721d52a2bd6a648ec Mon Sep 17 00:00:00 2001 From: Lorenzo Stoakes Date: Fri, 25 Oct 2024 13:26:23 +0100 Subject: tools: testing: add additional vma_internal.h stubs Patch series "fix error handling in mmap_region() and refactor", v3. The mmap_region() function is somewhat terrifying, with spaghetti-like control flow and numerous means by which issues can arise and incomplete state, memory leaks and other unpleasantness can occur. This series goes to great lengths to simplify how mmap_region() works and to avoid unwinding errors late on in the process of setting up the VMA for the new mapping, and equally avoids such operations occurring while the VMA is in an inconsistent state. This series builds on the previously submitted hotfix patches (see link to v2 below) which addresses the most critical issues around mmap_region(), and further works to improve mmap_region() complexity, stability, and testability. This series moves the code to mm/vma.c to render it userland testable, refactors and simplifies it into smaller functions that are significantly more readable. It additionally avoids performing an attempt at a second merge mid-way through allocating a new VMA, a dubious proposition at best and one that is highly subject to subtle bugs. Rather than do this, we simply note that we ought to retry the merge and do this as a final step. This patch (of 3): Add some additional vma_internal.h stubs in preparation for __mmap_region() being moved to mm/vma.c. Without these the move would result in the tests no longer compiling. Link: https://lkml.kernel.org/r/cover.1729858176.git.lorenzo.stoakes@oracle.com Link: https://lkml.kernel.org/r/74b27e159e261d2ac1fe66a130edad1d61fdc176.1729858176.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes Cc: Jann Horn Cc: Liam R. Howlett Cc: Linus Torvalds Cc: Peter Xu Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- tools/testing/vma/vma_internal.h | 115 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 114 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/vma/vma_internal.h b/tools/testing/vma/vma_internal.h index c5b9da034511..e76ff579e1fd 100644 --- a/tools/testing/vma/vma_internal.h +++ b/tools/testing/vma/vma_internal.h @@ -44,7 +44,9 @@ #define VM_LOCKED 0x00002000 #define VM_IO 0x00004000 #define VM_DONTEXPAND 0x00040000 +#define VM_LOCKONFAULT 0x00080000 #define VM_ACCOUNT 0x00100000 +#define VM_NORESERVE 0x00200000 #define VM_MIXEDMAP 0x10000000 #define VM_STACK VM_GROWSDOWN #define VM_SHADOW_STACK VM_NONE @@ -53,6 +55,14 @@ #define VM_ACCESS_FLAGS (VM_READ | VM_WRITE | VM_EXEC) #define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_PFNMAP | VM_MIXEDMAP) +/* This mask represents all the VMA flag bits used by mlock */ +#define VM_LOCKED_MASK (VM_LOCKED | VM_LOCKONFAULT) + +#ifdef CONFIG_64BIT +/* VM is sealed, in vm_flags */ +#define VM_SEALED _BITUL(63) +#endif + #define FIRST_USER_ADDRESS 0UL #define USER_PGTABLES_CEILING 0UL @@ -698,8 +708,9 @@ static inline void tlb_finish_mmu(struct mmu_gather *) { } -static inline void get_file(struct file *) +static inline struct file *get_file(struct file *f) { + return f; } static inline int vma_dup_policy(struct vm_area_struct *, struct vm_area_struct *) @@ -920,4 +931,106 @@ static inline bool signal_pending(void *) return false; } +static inline bool is_file_hugepages(struct file *) +{ + return false; +} + +static inline int security_vm_enough_memory_mm(struct mm_struct *, long) +{ + return true; +} + +static inline bool may_expand_vm(struct mm_struct *, vm_flags_t, unsigned long) +{ + return true; +} + +static inline void vm_flags_init(struct vm_area_struct *vma, + vm_flags_t flags) +{ + vma->__vm_flags = flags; +} + +static inline void vm_flags_set(struct vm_area_struct *vma, + vm_flags_t flags) +{ + vma_start_write(vma); + vma->__vm_flags |= flags; +} + +static inline void vm_flags_clear(struct vm_area_struct *vma, + vm_flags_t flags) +{ + vma_start_write(vma); + vma->__vm_flags &= ~flags; +} + +static inline int call_mmap(struct file *, struct vm_area_struct *) +{ + return 0; +} + +static inline int shmem_zero_setup(struct vm_area_struct *) +{ + return 0; +} + +static inline void vma_set_anonymous(struct vm_area_struct *vma) +{ + vma->vm_ops = NULL; +} + +static inline void ksm_add_vma(struct vm_area_struct *) +{ +} + +static inline void perf_event_mmap(struct vm_area_struct *) +{ +} + +static inline bool vma_is_dax(struct vm_area_struct *) +{ + return false; +} + +static inline struct vm_area_struct *get_gate_vma(struct mm_struct *) +{ + return NULL; +} + +bool vma_wants_writenotify(struct vm_area_struct *vma, pgprot_t vm_page_prot); + +/* Update vma->vm_page_prot to reflect vma->vm_flags. */ +static inline void vma_set_page_prot(struct vm_area_struct *vma) +{ + unsigned long vm_flags = vma->vm_flags; + pgprot_t vm_page_prot; + + /* testing: we inline vm_pgprot_modify() to avoid clash with vma.h. */ + vm_page_prot = pgprot_modify(vma->vm_page_prot, vm_get_page_prot(vm_flags)); + + if (vma_wants_writenotify(vma, vm_page_prot)) { + vm_flags &= ~VM_SHARED; + /* testing: we inline vm_pgprot_modify() to avoid clash with vma.h. */ + vm_page_prot = pgprot_modify(vm_page_prot, vm_get_page_prot(vm_flags)); + } + /* remove_protection_ptes reads vma->vm_page_prot without mmap_lock */ + WRITE_ONCE(vma->vm_page_prot, vm_page_prot); +} + +static inline bool arch_validate_flags(unsigned long) +{ + return true; +} + +static inline void vma_close(struct vm_area_struct *) +{ +} + +static inline int mmap_file(struct file *, struct vm_area_struct *) +{ + return 0; +} + #endif /* __MM_VMA_INTERNAL_H */ -- cgit v1.2.3 From 3b9bde403aafa55dcbe7dc250b95af917610f139 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 7 Nov 2024 00:04:49 +1100 Subject: selftests/powerpc: Lower run time of count_stcx_fail test The count_stcx_fail test runs for close to or just over 2 minutes, which means it sometimes times out. That's overkill for a test that just demonstrates some PMU counters are working. Drop the 64 billion instruction case, to lower the runtime to ~30s. Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20241106130453.1741013-1-mpe@ellerman.id.au --- tools/testing/selftests/powerpc/pmu/count_stcx_fail.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c b/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c index 2070a1e2b3a5..d8dd9a9c6c1b 100644 --- a/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c +++ b/tools/testing/selftests/powerpc/pmu/count_stcx_fail.c @@ -144,9 +144,6 @@ static int test_body(void) /* Run for 16Bi instructions */ FAIL_IF(do_count_loop(events, 16000000000, overhead, true)); - /* Run for 64Bi instructions */ - FAIL_IF(do_count_loop(events, 64000000000, overhead, true)); - event_close(&events[0]); event_close(&events[1]); -- cgit v1.2.3 From 5543d595954eefb3a6faa18a6dc7b1b3d6022052 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 7 Nov 2024 00:04:50 +1100 Subject: selftests/powerpc: Give all tests 2 minutes timeout Each of the powerpc selftests runs with a timeout of 2 minutes by default (see tools/testing/selftests/powerpc/harness.c). But when tests are run with run_kselftest.sh it uses a timeout of 45 seconds, meaning some tests run OK standalone but fail when run with the test runner. So tell run_kselftest.sh to give each test 130 seconds, that should allow the tests to complete, or be killed by the powerpc test harness after 2 minutes. If for some reason the harness fails, or for the few tests that don't use the harness, the 130 second timeout should catch them if they get stuck. Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20241106130453.1741013-2-mpe@ellerman.id.au --- tools/testing/selftests/powerpc/alignment/settings | 1 + tools/testing/selftests/powerpc/cache_shape/settings | 1 + tools/testing/selftests/powerpc/copyloops/settings | 1 + tools/testing/selftests/powerpc/dexcr/settings | 1 + tools/testing/selftests/powerpc/dscr/settings | 1 + tools/testing/selftests/powerpc/lib/settings | 1 + tools/testing/selftests/powerpc/math/settings | 1 + tools/testing/selftests/powerpc/mce/settings | 1 + tools/testing/selftests/powerpc/mm/settings | 1 + tools/testing/selftests/powerpc/nx-gzip/settings | 1 + tools/testing/selftests/powerpc/papr_attributes/settings | 1 + tools/testing/selftests/powerpc/papr_sysparm/settings | 1 + tools/testing/selftests/powerpc/papr_vpd/settings | 1 + tools/testing/selftests/powerpc/pmu/settings | 1 + tools/testing/selftests/powerpc/primitives/settings | 1 + tools/testing/selftests/powerpc/ptrace/settings | 1 + tools/testing/selftests/powerpc/scripts/settings | 1 + tools/testing/selftests/powerpc/security/settings | 1 + tools/testing/selftests/powerpc/stringloops/settings | 1 + tools/testing/selftests/powerpc/switch_endian/settings | 1 + tools/testing/selftests/powerpc/syscalls/settings | 1 + tools/testing/selftests/powerpc/vphn/settings | 1 + 22 files changed, 22 insertions(+) create mode 100644 tools/testing/selftests/powerpc/alignment/settings create mode 100644 tools/testing/selftests/powerpc/cache_shape/settings create mode 100644 tools/testing/selftests/powerpc/copyloops/settings create mode 100644 tools/testing/selftests/powerpc/dexcr/settings create mode 100644 tools/testing/selftests/powerpc/dscr/settings create mode 100644 tools/testing/selftests/powerpc/lib/settings create mode 100644 tools/testing/selftests/powerpc/math/settings create mode 100644 tools/testing/selftests/powerpc/mce/settings create mode 100644 tools/testing/selftests/powerpc/mm/settings create mode 100644 tools/testing/selftests/powerpc/nx-gzip/settings create mode 100644 tools/testing/selftests/powerpc/papr_attributes/settings create mode 100644 tools/testing/selftests/powerpc/papr_sysparm/settings create mode 100644 tools/testing/selftests/powerpc/papr_vpd/settings create mode 100644 tools/testing/selftests/powerpc/pmu/settings create mode 100644 tools/testing/selftests/powerpc/primitives/settings create mode 100644 tools/testing/selftests/powerpc/ptrace/settings create mode 100644 tools/testing/selftests/powerpc/scripts/settings create mode 100644 tools/testing/selftests/powerpc/security/settings create mode 100644 tools/testing/selftests/powerpc/stringloops/settings create mode 100644 tools/testing/selftests/powerpc/switch_endian/settings create mode 100644 tools/testing/selftests/powerpc/syscalls/settings create mode 100644 tools/testing/selftests/powerpc/vphn/settings (limited to 'tools') diff --git a/tools/testing/selftests/powerpc/alignment/settings b/tools/testing/selftests/powerpc/alignment/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/alignment/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/cache_shape/settings b/tools/testing/selftests/powerpc/cache_shape/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/cache_shape/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/copyloops/settings b/tools/testing/selftests/powerpc/copyloops/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/copyloops/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/dexcr/settings b/tools/testing/selftests/powerpc/dexcr/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/dexcr/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/dscr/settings b/tools/testing/selftests/powerpc/dscr/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/dscr/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/lib/settings b/tools/testing/selftests/powerpc/lib/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/lib/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/math/settings b/tools/testing/selftests/powerpc/math/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/math/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/mce/settings b/tools/testing/selftests/powerpc/mce/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/mce/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/mm/settings b/tools/testing/selftests/powerpc/mm/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/mm/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/nx-gzip/settings b/tools/testing/selftests/powerpc/nx-gzip/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/nx-gzip/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/papr_attributes/settings b/tools/testing/selftests/powerpc/papr_attributes/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/papr_attributes/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/papr_sysparm/settings b/tools/testing/selftests/powerpc/papr_sysparm/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/papr_sysparm/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/papr_vpd/settings b/tools/testing/selftests/powerpc/papr_vpd/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/papr_vpd/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/pmu/settings b/tools/testing/selftests/powerpc/pmu/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/primitives/settings b/tools/testing/selftests/powerpc/primitives/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/primitives/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/ptrace/settings b/tools/testing/selftests/powerpc/ptrace/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/ptrace/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/scripts/settings b/tools/testing/selftests/powerpc/scripts/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/scripts/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/security/settings b/tools/testing/selftests/powerpc/security/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/security/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/stringloops/settings b/tools/testing/selftests/powerpc/stringloops/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/stringloops/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/switch_endian/settings b/tools/testing/selftests/powerpc/switch_endian/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/switch_endian/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/syscalls/settings b/tools/testing/selftests/powerpc/syscalls/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/syscalls/settings @@ -0,0 +1 @@ +timeout=130 diff --git a/tools/testing/selftests/powerpc/vphn/settings b/tools/testing/selftests/powerpc/vphn/settings new file mode 100644 index 000000000000..2e8566183318 --- /dev/null +++ b/tools/testing/selftests/powerpc/vphn/settings @@ -0,0 +1 @@ +timeout=130 -- cgit v1.2.3 From d5f578f90a34d85f1cabd4c27af1b2d9fbffe64b Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 7 Nov 2024 00:04:51 +1100 Subject: selftests/powerpc: Fix 32-bit BE build errors on Ubuntu 24.04 Starting with Ubuntu 24.04, building the selftests with the big endian compiler (which defaults to 32-bit) fails with errors: stack_expansion_ldst.c:178:37: error: format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'rlim_t' {aka 'long long unsigned int'} subpage_prot.c:214:38: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'off_t' {aka 'long long int'} Prior to 24.04 rlim_t was long unsigned int, and off_t was long int. Cast to unsigned long long and long long before passing to printf to avoid the errors. Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20241106130453.1741013-3-mpe@ellerman.id.au --- tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c | 2 +- tools/testing/selftests/powerpc/mm/subpage_prot.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c b/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c index ed9143990888..9c0d343d7137 100644 --- a/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c +++ b/tools/testing/selftests/powerpc/mm/stack_expansion_ldst.c @@ -175,7 +175,7 @@ static int test(void) page_size = getpagesize(); getrlimit(RLIMIT_STACK, &rlimit); - printf("Stack rlimit is 0x%lx\n", rlimit.rlim_cur); + printf("Stack rlimit is 0x%llx\n", (unsigned long long)rlimit.rlim_cur); printf("Testing loads ...\n"); test_one_type(LOAD, page_size, rlimit.rlim_cur); diff --git a/tools/testing/selftests/powerpc/mm/subpage_prot.c b/tools/testing/selftests/powerpc/mm/subpage_prot.c index 3ae77ba93208..8cf9fd5fed1c 100644 --- a/tools/testing/selftests/powerpc/mm/subpage_prot.c +++ b/tools/testing/selftests/powerpc/mm/subpage_prot.c @@ -211,8 +211,8 @@ int test_file(void) perror("failed to map file"); return 1; } - printf("allocated %s for 0x%lx bytes at %p\n", - file_name, filesize, fileblock); + printf("allocated %s for 0x%llx bytes at %p\n", + file_name, (long long)filesize, fileblock); printf("testing file map...\n"); -- cgit v1.2.3 From c6a75555b4b2643365a007b7162a670d69aa28fe Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 7 Nov 2024 00:04:52 +1100 Subject: selftests/powerpc: Return errors from all tests Fix some tests which weren't returning an error code from main. Although these tests only ever return success, they can still fail if they time out and the harness kills them. If that happens they still return success to the shell, which is incorrect and confuses the higher level error reporting. Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20241106130453.1741013-4-mpe@ellerman.id.au --- tools/testing/selftests/powerpc/signal/sigfuz.c | 2 +- tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c | 2 +- tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c | 3 +-- 3 files changed, 3 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/powerpc/signal/sigfuz.c b/tools/testing/selftests/powerpc/signal/sigfuz.c index 08f9afe3b95c..c101b1391696 100644 --- a/tools/testing/selftests/powerpc/signal/sigfuz.c +++ b/tools/testing/selftests/powerpc/signal/sigfuz.c @@ -321,5 +321,5 @@ int main(int argc, char **argv) if (!args) args = ARG_COMPLETE; - test_harness(signal_fuzzer, "signal_fuzzer"); + return test_harness(signal_fuzzer, "signal_fuzzer"); } diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c b/tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c index 421cb082f6be..0a4bc479ae39 100644 --- a/tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c +++ b/tools/testing/selftests/powerpc/tm/tm-signal-context-force-tm.c @@ -176,5 +176,5 @@ int tm_signal_context_force_tm(void) int main(int argc, char **argv) { - test_harness(tm_signal_context_force_tm, "tm_signal_context_force_tm"); + return test_harness(tm_signal_context_force_tm, "tm_signal_context_force_tm"); } diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c index 06b801906f27..968864b052ec 100644 --- a/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c +++ b/tools/testing/selftests/powerpc/tm/tm-signal-sigreturn-nt.c @@ -46,6 +46,5 @@ int tm_signal_sigreturn_nt(void) int main(int argc, char **argv) { - test_harness(tm_signal_sigreturn_nt, "tm_signal_sigreturn_nt"); + return test_harness(tm_signal_sigreturn_nt, "tm_signal_sigreturn_nt"); } - -- cgit v1.2.3 From a8a54a65cac4f8202df36f925b6746328802d05f Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 7 Nov 2024 00:04:53 +1100 Subject: selftests/powerpc: Detect taint change in mitigation patching test Currently the mitigation patching test errors out if the kernel is tainted prior to the test running. That causes the test to fail unnecessarily if some other test has caused the kernel to be tainted, or if a proprietary or force module is loaded for example. Instead just warn if the kernel is tainted to begin with, and only report a change in the taint state as an error in the test. Signed-off-by: Michael Ellerman Link: https://patch.msgid.link/20241106130453.1741013-5-mpe@ellerman.id.au --- tools/testing/selftests/powerpc/security/mitigation-patching.sh | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/powerpc/security/mitigation-patching.sh b/tools/testing/selftests/powerpc/security/mitigation-patching.sh index f43aa4b77fba..9a4612e2e953 100755 --- a/tools/testing/selftests/powerpc/security/mitigation-patching.sh +++ b/tools/testing/selftests/powerpc/security/mitigation-patching.sh @@ -36,8 +36,7 @@ fi tainted=$(cat /proc/sys/kernel/tainted) if [[ "$tainted" -ne 0 ]]; then - echo "Error: kernel already tainted!" >&2 - exit 1 + echo "Warning: kernel already tainted! ($tainted)" >&2 fi mitigations="barrier_nospec stf_barrier count_cache_flush rfi_flush entry_flush uaccess_flush" @@ -68,9 +67,10 @@ fi echo "Waiting for timeout ..." wait +orig_tainted=$tainted tainted=$(cat /proc/sys/kernel/tainted) -if [[ "$tainted" -ne 0 ]]; then - echo "Error: kernel became tainted!" >&2 +if [[ "$tainted" != "$orig_tainted" ]]; then + echo "Error: kernel newly tainted, before ($orig_tainted) after ($tainted)" >&2 exit 1 fi -- cgit v1.2.3 From 3ec83a377a995559c18880ff780a6873df9cc5d3 Mon Sep 17 00:00:00 2001 From: Jonas Rebmann Date: Thu, 7 Nov 2024 16:07:31 +0100 Subject: spi: spidev_test: add support for word delay Support setting the word delay using the -w/--word-delay command line parameter. Note that spidev exposes word delay only as an u8, allowing for a maximum of 255us of delay to be inserted. Signed-off-by: Jonas Rebmann Link: https://patch.msgid.link/20241107-spidev-test-word-delay-v1-1-d4bba5569e39@pengutronix.de Signed-off-by: Mark Brown --- tools/spi/spidev_test.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/spi/spidev_test.c b/tools/spi/spidev_test.c index 9179942d7f15..f2135d619a0b 100644 --- a/tools/spi/spidev_test.c +++ b/tools/spi/spidev_test.c @@ -42,6 +42,7 @@ static char *input_file; static char *output_file; static uint32_t speed = 500000; static uint16_t delay; +static uint16_t word_delay; static int verbose; static int transfer_size; static int iterations; @@ -124,6 +125,7 @@ static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len) .rx_buf = (unsigned long)rx, .len = len, .delay_usecs = delay, + .word_delay_usecs = word_delay, .speed_hz = speed, .bits_per_word = bits, }; @@ -172,11 +174,12 @@ static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len) static void print_usage(const char *prog) { - printf("Usage: %s [-2348CDFHILMNORSZbdilopsv]\n", prog); + printf("Usage: %s [-2348CDFHILMNORSZbdilopsvw]\n", prog); puts("general device settings:\n" " -D --device device to use (default /dev/spidev1.1)\n" " -s --speed max speed (Hz)\n" " -d --delay delay (usec)\n" + " -w --word-delay word delay (usec)\n" " -l --loop loopback\n" "spi mode:\n" " -H --cpha clock phase\n" @@ -213,6 +216,7 @@ static void parse_opts(int argc, char *argv[]) { "device", 1, 0, 'D' }, { "speed", 1, 0, 's' }, { "delay", 1, 0, 'd' }, + { "word-delay", 1, 0, 'w' }, { "loop", 0, 0, 'l' }, { "cpha", 0, 0, 'H' }, { "cpol", 0, 0, 'O' }, @@ -237,7 +241,7 @@ static void parse_opts(int argc, char *argv[]) }; int c; - c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3ZFMNR248p:vS:I:", + c = getopt_long(argc, argv, "D:s:d:w:b:i:o:lHOLC3ZFMNR248p:vS:I:", lopts, NULL); if (c == -1) @@ -253,6 +257,9 @@ static void parse_opts(int argc, char *argv[]) case 'd': delay = atoi(optarg); break; + case 'w': + word_delay = atoi(optarg); + break; case 'b': bits = atoi(optarg); break; -- cgit v1.2.3 From a3590d71a1acef850864f19bff2f37f56b2d4f00 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 30 Oct 2024 00:02:02 +0000 Subject: kselftest/arm64: Increase frequency of signal delivery in fp-stress Currently we only deliver signals to the processes being tested about once a second, meaning that the signal code paths are subject to relatively little stress. Increase this frequency substantially to 25ms intervals, along with some minor refactoring to make this more readily tuneable and maintain the 1s logging interval. This interval was chosen based on some experimentation with emulated platforms to avoid causing so much extra load that the test starts to run into the 45s limit for selftests or generally completely disconnect the timeout numbers from the We could increase this if we moved the signal generation out of the main supervisor thread, though we should also consider that he percentage of time that we spend interacting with the floating point state is also a consideration. Suggested-by: Mark Rutland Signed-off-by: Mark Brown Acked-by: Will Deacon Link: https://lore.kernel.org/r/20241030-arm64-fp-stress-interval-v2-1-bd3cef48c22c@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/fp-stress.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/fp-stress.c b/tools/testing/selftests/arm64/fp/fp-stress.c index 13958e645afc..b81bc0842f17 100644 --- a/tools/testing/selftests/arm64/fp/fp-stress.c +++ b/tools/testing/selftests/arm64/fp/fp-stress.c @@ -28,6 +28,9 @@ #define MAX_VLS 16 +#define SIGNAL_INTERVAL_MS 25 +#define LOG_INTERVALS (1000 / SIGNAL_INTERVAL_MS) + struct child_data { char *name, *output; pid_t pid; @@ -448,7 +451,7 @@ static const struct option options[] = { int main(int argc, char **argv) { int ret; - int timeout = 10; + int timeout = 10 * (1000 / SIGNAL_INTERVAL_MS); int cpus, i, j, c; int sve_vl_count, sme_vl_count; bool all_children_started = false; @@ -504,7 +507,7 @@ int main(int argc, char **argv) have_sme2 ? "present" : "absent"); if (timeout > 0) - ksft_print_msg("Will run for %ds\n", timeout); + ksft_print_msg("Will run for %d\n", timeout); else ksft_print_msg("Will run until terminated\n"); @@ -577,14 +580,14 @@ int main(int argc, char **argv) break; /* - * Timeout is counted in seconds with no output, the - * tests print during startup then are silent when - * running so this should ensure they all ran enough - * to install the signal handler, this is especially - * useful in emulation where we will both be slow and - * likely to have a large set of VLs. + * Timeout is counted in poll intervals with no + * output, the tests print during startup then are + * silent when running so this should ensure they all + * ran enough to install the signal handler, this is + * especially useful in emulation where we will both + * be slow and likely to have a large set of VLs. */ - ret = epoll_wait(epoll_fd, evs, tests, 1000); + ret = epoll_wait(epoll_fd, evs, tests, SIGNAL_INTERVAL_MS); if (ret < 0) { if (errno == EINTR) continue; @@ -624,8 +627,9 @@ int main(int argc, char **argv) all_children_started = true; } - ksft_print_msg("Sending signals, timeout remaining: %d\n", - timeout); + if ((timeout % LOG_INTERVALS) == 0) + ksft_print_msg("Sending signals, timeout remaining: %d\n", + timeout); for (i = 0; i < num_children; i++) child_tickle(&children[i]); -- cgit v1.2.3 From 161e9925053cafa83a1eb265a001b6917dfafa29 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 30 Oct 2024 00:02:03 +0000 Subject: kselftest/arm64: Poll less often while waiting for fp-stress children While fp-stress is waiting for children to start it doesn't send any signals to them so there is no need for it to have as short an epoll() timeout as it does when the children are all running. We do still want to have some timeout so that we can log diagnostics about missing children but this can be relatively large. On emulated platforms the overhead of running the supervisor process is quite high, especially during the process of execing the test binaries. Implement a longer epoll() timeout during the setup phase, using a 5s timeout while waiting for children and switching to the signal raise interval when all the children are started and we start sending signals. Signed-off-by: Mark Brown Acked-by: Will Deacon Link: https://lore.kernel.org/r/20241030-arm64-fp-stress-interval-v2-2-bd3cef48c22c@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/fp-stress.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/fp-stress.c b/tools/testing/selftests/arm64/fp/fp-stress.c index b81bc0842f17..ad867ff9687a 100644 --- a/tools/testing/selftests/arm64/fp/fp-stress.c +++ b/tools/testing/selftests/arm64/fp/fp-stress.c @@ -452,6 +452,7 @@ int main(int argc, char **argv) { int ret; int timeout = 10 * (1000 / SIGNAL_INTERVAL_MS); + int poll_interval = 5000; int cpus, i, j, c; int sve_vl_count, sme_vl_count; bool all_children_started = false; @@ -587,7 +588,7 @@ int main(int argc, char **argv) * especially useful in emulation where we will both * be slow and likely to have a large set of VLs. */ - ret = epoll_wait(epoll_fd, evs, tests, SIGNAL_INTERVAL_MS); + ret = epoll_wait(epoll_fd, evs, tests, poll_interval); if (ret < 0) { if (errno == EINTR) continue; @@ -625,6 +626,7 @@ int main(int argc, char **argv) } all_children_started = true; + poll_interval = SIGNAL_INTERVAL_MS; } if ((timeout % LOG_INTERVALS) == 0) -- cgit v1.2.3 From 94de486e4215b83de8a5e908b4b8f7d3979c3b0e Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 7 Nov 2024 01:39:20 +0000 Subject: kselftest/arm64: Correct misleading comments on fp-stress irritators The comments in the handlers for the irritator signal in the test threads for fp-stress suggest that the irritator will corrupt the register state observed by the main thread but this is not the case, instead the FPSIMD and SVE irritators (which are the only ones that are implemented) modify the current register state which is expected to be overwritten on return from the handler by the saved register state. Update the comment to reflect what the handler is actually doing. Acked-by: Mark Rutland Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-1-c4b9622e36ee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/fpsimd-test.S | 3 +-- tools/testing/selftests/arm64/fp/sve-test.S | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/fpsimd-test.S b/tools/testing/selftests/arm64/fp/fpsimd-test.S index 8b960d01ed2e..bdfb7cf2e4ec 100644 --- a/tools/testing/selftests/arm64/fp/fpsimd-test.S +++ b/tools/testing/selftests/arm64/fp/fpsimd-test.S @@ -134,8 +134,7 @@ function check_vreg b memcmp endfunction -// Any SVE register modified here can cause corruption in the main -// thread -- but *only* the registers modified here. +// Modify live register state, the signal return will undo our changes function irritator_handler // Increment the irritation signal count (x23): ldr x0, [x2, #ucontext_regs + 8 * 23] diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index fff60e2a25ad..e3c0d585684d 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -291,8 +291,7 @@ function check_ffr #endif endfunction -// Any SVE register modified here can cause corruption in the main -// thread -- but *only* the registers modified here. +// Modify live register state, the signal return will undo our changes function irritator_handler // Increment the irritation signal count (x23): ldr x0, [x2, #ucontext_regs + 8 * 23] -- cgit v1.2.3 From ffca567fef9c4661c792ca48a2cdd038b2df4887 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 7 Nov 2024 01:39:21 +0000 Subject: kselftest/arm64: Remove unused ADRs from irritator handlers The irritator handlers for the fp-stress test programs all use ADR to load an address into x0 which is then not referenced. Remove these ADRs as they just cause confusion. Acked-by: Mark Rutland Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-2-c4b9622e36ee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/fpsimd-test.S | 1 - tools/testing/selftests/arm64/fp/sve-test.S | 1 - tools/testing/selftests/arm64/fp/za-test.S | 1 - tools/testing/selftests/arm64/fp/zt-test.S | 1 - 4 files changed, 4 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/fpsimd-test.S b/tools/testing/selftests/arm64/fp/fpsimd-test.S index bdfb7cf2e4ec..9977ffdd758a 100644 --- a/tools/testing/selftests/arm64/fp/fpsimd-test.S +++ b/tools/testing/selftests/arm64/fp/fpsimd-test.S @@ -142,7 +142,6 @@ function irritator_handler str x0, [x2, #ucontext_regs + 8 * 23] // Corrupt some random V-regs - adr x0, .text + (irritator_handler - .text) / 16 * 16 movi v0.8b, #7 movi v9.16b, #9 movi v31.8b, #31 diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index e3c0d585684d..f1fb9745c681 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -299,7 +299,6 @@ function irritator_handler str x0, [x2, #ucontext_regs + 8 * 23] // Corrupt some random Z-regs - adr x0, .text + (irritator_handler - .text) / 16 * 16 movi v0.8b, #1 movi v9.16b, #2 movi v31.8b, #3 diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/selftests/arm64/fp/za-test.S index 095b45531640..1ee0ec36766d 100644 --- a/tools/testing/selftests/arm64/fp/za-test.S +++ b/tools/testing/selftests/arm64/fp/za-test.S @@ -158,7 +158,6 @@ function irritator_handler // Corrupt some random ZA data #if 0 - adr x0, .text + (irritator_handler - .text) / 16 * 16 movi v0.8b, #1 movi v9.16b, #2 movi v31.8b, #3 diff --git a/tools/testing/selftests/arm64/fp/zt-test.S b/tools/testing/selftests/arm64/fp/zt-test.S index b5c81e81a379..ade9c98abcda 100644 --- a/tools/testing/selftests/arm64/fp/zt-test.S +++ b/tools/testing/selftests/arm64/fp/zt-test.S @@ -127,7 +127,6 @@ function irritator_handler // Corrupt some random ZT data #if 0 - adr x0, .text + (irritator_handler - .text) / 16 * 16 movi v0.8b, #1 movi v9.16b, #2 movi v31.8b, #3 -- cgit v1.2.3 From d65f27d240bb897ac5a4a3fb7557724b3717e022 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 7 Nov 2024 01:39:23 +0000 Subject: kselftest/arm64: Implement irritators for ZA and ZT Currently we don't use the irritator signal in our floating point stress tests so when we added ZA and ZT stress tests we didn't actually bother implementing any actual action in the handlers, we just counted the signal deliveries. In preparation for using the irritators let's implement them, just trivially SMSTOP and SMSTART to reset all bits in the register to 0. Acked-by: Mark Rutland Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-4-c4b9622e36ee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/za-test.S | 12 ++++-------- tools/testing/selftests/arm64/fp/zt-test.S | 12 ++++-------- 2 files changed, 8 insertions(+), 16 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/selftests/arm64/fp/za-test.S index 1ee0ec36766d..f902e6ef9077 100644 --- a/tools/testing/selftests/arm64/fp/za-test.S +++ b/tools/testing/selftests/arm64/fp/za-test.S @@ -148,20 +148,16 @@ function check_za b memcmp endfunction -// Any SME register modified here can cause corruption in the main -// thread -- but *only* the locations modified here. +// Modify the live SME register state, signal return will undo our changes function irritator_handler // Increment the irritation signal count (x23): ldr x0, [x2, #ucontext_regs + 8 * 23] add x0, x0, #1 str x0, [x2, #ucontext_regs + 8 * 23] - // Corrupt some random ZA data -#if 0 - movi v0.8b, #1 - movi v9.16b, #2 - movi v31.8b, #3 -#endif + // This will reset ZA to all bits 0 + smstop + smstart ret endfunction diff --git a/tools/testing/selftests/arm64/fp/zt-test.S b/tools/testing/selftests/arm64/fp/zt-test.S index ade9c98abcda..c96cb7c2ad4b 100644 --- a/tools/testing/selftests/arm64/fp/zt-test.S +++ b/tools/testing/selftests/arm64/fp/zt-test.S @@ -117,20 +117,16 @@ function check_zt b memcmp endfunction -// Any SME register modified here can cause corruption in the main -// thread -- but *only* the locations modified here. +// Modify the live SME register state, signal return will undo our changes function irritator_handler // Increment the irritation signal count (x23): ldr x0, [x2, #ucontext_regs + 8 * 23] add x0, x0, #1 str x0, [x2, #ucontext_regs + 8 * 23] - // Corrupt some random ZT data -#if 0 - movi v0.8b, #1 - movi v9.16b, #2 - movi v31.8b, #3 -#endif + // This will reset ZT to all bits 0 + smstop + smstart ret endfunction -- cgit v1.2.3 From 7368debf275aa2419365ce47da00922ca51c6094 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 7 Nov 2024 01:39:24 +0000 Subject: kselftest/arm64: Provide a SIGUSR1 handler in the kernel mode FP stress test The other stress test programs provide a SIGUSR1 handler which modifies the live register state in order to validate that signal context is being restored during signal return. While we can't usefully do this when testing kernel mode FP usage provide a handler for SIGUSR1 which just counts the number of signals like we do for SIGUSR2, allowing fp-stress to treat all the test programs uniformly. Acked-by: Mark Rutland Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-5-c4b9622e36ee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/kernel-test.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/kernel-test.c b/tools/testing/selftests/arm64/fp/kernel-test.c index e8da3b4cbd23..859345379044 100644 --- a/tools/testing/selftests/arm64/fp/kernel-test.c +++ b/tools/testing/selftests/arm64/fp/kernel-test.c @@ -267,6 +267,10 @@ int main(void) strerror(errno), errno); sa.sa_sigaction = handle_kick_signal; + ret = sigaction(SIGUSR1, &sa, NULL); + if (ret < 0) + printf("Failed to install SIGUSR1 handler: %s (%d)\n", + strerror(errno), errno); ret = sigaction(SIGUSR2, &sa, NULL); if (ret < 0) printf("Failed to install SIGUSR2 handler: %s (%d)\n", -- cgit v1.2.3 From ead1c35ce3b3c766443a82b56ee343cfe7ee8305 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 7 Nov 2024 01:39:25 +0000 Subject: kselftest/arm64: Test signal handler state modification in fp-stress Currently in fp-stress we test signal delivery to the test threads by sending SIGUSR2 which simply counts how many signals are delivered. The test programs now also all have a SIGUSR1 handler which for the threads doing userspace testing additionally modifies the floating point register state in the signal handler, verifying that when we return the saved register state is restored from the signal context as expected. Switch over to triggering that to validate that we are restoring as expected. Acked-by: Mark Rutland Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-6-c4b9622e36ee@kernel.org Signed-off-by: Catalin Marinas --- tools/testing/selftests/arm64/fp/fp-stress.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/arm64/fp/fp-stress.c b/tools/testing/selftests/arm64/fp/fp-stress.c index ad867ff9687a..74e23208b94c 100644 --- a/tools/testing/selftests/arm64/fp/fp-stress.c +++ b/tools/testing/selftests/arm64/fp/fp-stress.c @@ -223,7 +223,7 @@ static void child_output(struct child_data *child, uint32_t events, static void child_tickle(struct child_data *child) { if (child->output_seen && !child->exited) - kill(child->pid, SIGUSR2); + kill(child->pid, SIGUSR1); } static void child_stop(struct child_data *child) -- cgit v1.2.3 From 9ac98662dbd3254007b2b32e792a236e93ace805 Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Wed, 6 Nov 2024 14:48:26 +0000 Subject: perf: event: Remove deadcode event_format__print() last use was removed by 2017's commit 894f3f1732cb ("perf script: Use event_format__fprintf()") evlist__find_tracepoint_by_id() last use was removed by 2012's commit e60fc847cefa ("perf evlist: Remove some unused methods") evlist__set_tp_filter_pid() last use was removed by 2017's commit dd1a50377c92 ("perf trace: Introduce filter_loop_pids()") Remove them. Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20241106144826.91728-1-linux@treblig.org Signed-off-by: Namhyung Kim --- tools/perf/util/evlist.c | 18 ------------------ tools/perf/util/evlist.h | 2 -- tools/perf/util/trace-event-parse.c | 6 ------ tools/perf/util/trace-event.h | 3 --- 4 files changed, 29 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 37d0fc01c180..f0dd174e2deb 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -320,19 +320,6 @@ struct evsel *evlist__add_sched_switch(struct evlist *evlist, bool system_wide) } #endif -struct evsel *evlist__find_tracepoint_by_id(struct evlist *evlist, int id) -{ - struct evsel *evsel; - - evlist__for_each_entry(evlist, evsel) { - if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT && - (int)evsel->core.attr.config == id) - return evsel; - } - - return NULL; -} - struct evsel *evlist__find_tracepoint_by_name(struct evlist *evlist, const char *name) { struct evsel *evsel; @@ -1157,11 +1144,6 @@ int evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids) return ret; } -int evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid) -{ - return evlist__set_tp_filter_pids(evlist, 1, &pid); -} - int evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids) { char *filter = asprintf__tp_filter_pids(npids, pids); diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index cd80a470a4ba..adddb1db1ad2 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -132,7 +132,6 @@ int __evlist__set_tracepoints_handlers(struct evlist *evlist, __evlist__set_tracepoints_handlers(evlist, array, ARRAY_SIZE(array)) int evlist__set_tp_filter(struct evlist *evlist, const char *filter); -int evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid); int evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids); int evlist__append_tp_filter(struct evlist *evlist, const char *filter); @@ -140,7 +139,6 @@ int evlist__append_tp_filter(struct evlist *evlist, const char *filter); int evlist__append_tp_filter_pid(struct evlist *evlist, pid_t pid); int evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids); -struct evsel *evlist__find_tracepoint_by_id(struct evlist *evlist, int id); struct evsel *evlist__find_tracepoint_by_name(struct evlist *evlist, const char *name); int evlist__add_pollfd(struct evlist *evlist, int fd); diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index f0332bd3a501..d97830cdbd7e 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -116,12 +116,6 @@ void event_format__fprintf(struct tep_event *event, trace_seq_destroy(&s); } -void event_format__print(struct tep_event *event, - int cpu, void *data, int size) -{ - return event_format__fprintf(event, cpu, data, size, stdout); -} - /* * prev_state is of size long, which is 32 bits on 32 bit architectures. * As it needs to have the same bits for both 32 bit and 64 bit architectures diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index bbf8b26bc8da..0e5133f1b910 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -42,9 +42,6 @@ struct tep_event *trace_event__tp_format_id(int id); void event_format__fprintf(struct tep_event *event, int cpu, void *data, int size, FILE *fp); -void event_format__print(struct tep_event *event, - int cpu, void *data, int size); - int parse_ftrace_file(struct tep_handle *pevent, char *buf, unsigned long size); int parse_event_file(struct tep_handle *pevent, char *buf, unsigned long size, char *sys); -- cgit v1.2.3 From d8c0f8b4ee989b79d8d92f954662efed38c7b23d Mon Sep 17 00:00:00 2001 From: Haiyue Wang Date: Wed, 6 Nov 2024 20:12:14 +0800 Subject: perf tools: Add the empty-pmu-events build to .gitignore The commit 0fe881f10ceb ("perf jevents: Autogenerate empty-pmu-events.c") build will generate two files, add them to .gitignore: tools/perf/pmu-events/empty-pmu-events.log tools/perf/pmu-events/test-empty-pmu-events.c Signed-off-by: Haiyue Wang Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20241106121254.2869-1-haiyuewa@163.com Signed-off-by: Namhyung Kim --- tools/perf/.gitignore | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/perf/.gitignore b/tools/perf/.gitignore index 19ce1cd56f8c..5aaf73df6700 100644 --- a/tools/perf/.gitignore +++ b/tools/perf/.gitignore @@ -39,6 +39,8 @@ trace/beauty/generated/ pmu-events/pmu-events.c pmu-events/jevents pmu-events/metric_test.log +pmu-events/empty-pmu-events.log +pmu-events/test-empty-pmu-events.c *.shellcheck_log feature/ libapi/ -- cgit v1.2.3 From 62a6d092f1e7e72365ecf65bbc3f268121130292 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 5 Nov 2024 16:48:18 -0800 Subject: perf stat: Expand metric+unit buffer size Long metric names combined with units may exceed the metric_bf and lead to truncation. Double metric_bf in size to avoid this. Signed-off-by: Ian Rogers Acked-by: Kan Liang Link: https://lore.kernel.org/r/20241106004818.2174593-1-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/stat-shadow.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index ada787947e16..47718610d5d8 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -517,7 +517,7 @@ static void generic_metric(struct perf_stat_config *config, if (!metric_events[i]) { if (expr__parse(&ratio, pctx, metric_expr) == 0) { char *unit; - char metric_bf[64]; + char metric_bf[128]; if (metric_threshold && expr__parse(&threshold, pctx, metric_threshold) == 0 && -- cgit v1.2.3 From 55d42a0c3f9ccd07c199e0ddbe1ba87572d30074 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Tue, 5 Nov 2024 17:52:35 -0800 Subject: selftests: net: add a test for closing a netlink socket ith dump in progress Close a socket with dump in progress. We need a dump which generates enough info not to fit into a single skb. Policy dump fits the bill. Use the trick discovered by syzbot for keeping a ref on the socket longer than just close, with mqueue. TAP version 13 1..3 # Starting 3 tests from 1 test cases. # RUN global.test_sanity ... # OK global.test_sanity ok 1 global.test_sanity # RUN global.close_in_progress ... # OK global.close_in_progress ok 2 global.close_in_progress # RUN global.close_with_ref ... # OK global.close_with_ref ok 3 global.close_with_ref # PASSED: 3 / 3 tests passed. # Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0 Note that this test is not expected to fail but rather crash the kernel if we get the cleanup wrong. Reviewed-by: Kuniyuki Iwashima Link: https://patch.msgid.link/20241106015235.2458807-2-kuba@kernel.org Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/netlink-dumps.c | 110 ++++++++++++++++++++++++++++ 2 files changed, 111 insertions(+) create mode 100644 tools/testing/selftests/net/netlink-dumps.c (limited to 'tools') diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 649f1fe0dc46..5e86f7a51b43 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -78,6 +78,7 @@ TEST_PROGS += test_vxlan_vnifiltering.sh TEST_GEN_FILES += io_uring_zerocopy_tx TEST_PROGS += io_uring_zerocopy_tx.sh TEST_GEN_FILES += bind_bhash +TEST_GEN_PROGS += netlink-dumps TEST_GEN_PROGS += sk_bind_sendto_listen TEST_GEN_PROGS += sk_connect_zero_addr TEST_GEN_PROGS += sk_so_peek_off diff --git a/tools/testing/selftests/net/netlink-dumps.c b/tools/testing/selftests/net/netlink-dumps.c new file mode 100644 index 000000000000..7ee6dcd334df --- /dev/null +++ b/tools/testing/selftests/net/netlink-dumps.c @@ -0,0 +1,110 @@ +// SPDX-License-Identifier: GPL-2.0 + +#define _GNU_SOURCE + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "../kselftest_harness.h" + +static const struct { + struct nlmsghdr nlhdr; + struct genlmsghdr genlhdr; + struct nlattr ahdr; + __u16 val; + __u16 pad; +} dump_policies = { + .nlhdr = { + .nlmsg_len = sizeof(dump_policies), + .nlmsg_type = GENL_ID_CTRL, + .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP, + .nlmsg_seq = 1, + }, + .genlhdr = { + .cmd = CTRL_CMD_GETPOLICY, + .version = 2, + }, + .ahdr = { + .nla_len = 6, + .nla_type = CTRL_ATTR_FAMILY_ID, + }, + .val = GENL_ID_CTRL, + .pad = 0, +}; + +// Sanity check for the test itself, make sure the dump doesn't fit in one msg +TEST(test_sanity) +{ + int netlink_sock; + char buf[8192]; + ssize_t n; + + netlink_sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); + ASSERT_GE(netlink_sock, 0); + + n = send(netlink_sock, &dump_policies, sizeof(dump_policies), 0); + ASSERT_EQ(n, sizeof(dump_policies)); + + n = recv(netlink_sock, buf, sizeof(buf), MSG_DONTWAIT); + ASSERT_GE(n, sizeof(struct nlmsghdr)); + + n = recv(netlink_sock, buf, sizeof(buf), MSG_DONTWAIT); + ASSERT_GE(n, sizeof(struct nlmsghdr)); + + close(netlink_sock); +} + +TEST(close_in_progress) +{ + int netlink_sock; + ssize_t n; + + netlink_sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); + ASSERT_GE(netlink_sock, 0); + + n = send(netlink_sock, &dump_policies, sizeof(dump_policies), 0); + ASSERT_EQ(n, sizeof(dump_policies)); + + close(netlink_sock); +} + +TEST(close_with_ref) +{ + char cookie[NOTIFY_COOKIE_LEN] = {}; + int netlink_sock, mq_fd; + struct sigevent sigev; + ssize_t n; + + netlink_sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); + ASSERT_GE(netlink_sock, 0); + + n = send(netlink_sock, &dump_policies, sizeof(dump_policies), 0); + ASSERT_EQ(n, sizeof(dump_policies)); + + mq_fd = syscall(__NR_mq_open, "sed", O_CREAT | O_WRONLY, 0600, 0); + ASSERT_GE(mq_fd, 0); + + memset(&sigev, 0, sizeof(sigev)); + sigev.sigev_notify = SIGEV_THREAD; + sigev.sigev_value.sival_ptr = cookie; + sigev.sigev_signo = netlink_sock; + + syscall(__NR_mq_notify, mq_fd, &sigev); + + close(netlink_sock); + + // give mqueue time to fire + usleep(100 * 1000); +} + +TEST_HARNESS_MAIN -- cgit v1.2.3 From db64dfffcad2992d6bfc680822bdf715335c43f1 Mon Sep 17 00:00:00 2001 From: Kevin Brodsky Date: Thu, 7 Nov 2024 13:16:40 +0000 Subject: selftests/mm: Define PKEY_UNRESTRICTED for pkey_sighandler_tests Commit 6e182dc9f268 ("selftests/mm: Use generic pkey register manipulation") makes use of PKEY_UNRESTRICTED in pkey_sighandler_tests. The macro has been proposed for addition to uapi headers [1], but the patch hasn't landed yet. Define PKEY_UNRESTRICTED in pkey-helpers.h for the time being to fix the build. [1] https://lore.kernel.org/all/20241028090715.509527-2-yury.khrustalev@arm.com/ Fixes: 6e182dc9f268 ("selftests/mm: Use generic pkey register manipulation") Reported-by: Aishwarya TCV Signed-off-by: Kevin Brodsky Link: https://lore.kernel.org/r/20241107131640.650703-1-kevin.brodsky@arm.com Signed-off-by: Catalin Marinas --- tools/testing/selftests/mm/pkey-helpers.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'tools') diff --git a/tools/testing/selftests/mm/pkey-helpers.h b/tools/testing/selftests/mm/pkey-helpers.h index 9ab6a3ee153b..f7cfe163b0ff 100644 --- a/tools/testing/selftests/mm/pkey-helpers.h +++ b/tools/testing/selftests/mm/pkey-helpers.h @@ -112,6 +112,13 @@ void record_pkey_malloc(void *ptr, long size, int prot); #define PKEY_MASK (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE) #endif +/* + * FIXME: Remove once the generic PKEY_UNRESTRICTED definition is merged. + */ +#ifndef PKEY_UNRESTRICTED +#define PKEY_UNRESTRICTED 0x0 +#endif + #ifndef set_pkey_bits static inline u64 set_pkey_bits(u64 reg, int pkey, u64 flags) { -- cgit v1.2.3 From 0268d4579901821ff17259213c2d8c9679995d48 Mon Sep 17 00:00:00 2001 From: Muhammad Usama Anjum Date: Fri, 1 Nov 2024 19:15:57 +0500 Subject: selftests: hugetlb_dio: check for initial conditions to skip in the start The test should be skipped if initial conditions aren't fulfilled in the start instead of failing and outputting non-compliant TAP logs. This kind of failure pollutes the results. The initial conditions are: - The test should only execute if /tmp file can be allocated. - The test should only execute if huge pages are free. Before: TAP version 13 1..4 Bail out! Error opening file : Read-only file system (30) # Planned tests != run tests (4 != 0) # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:0 error:0 After: TAP version 13 1..0 # SKIP Unable to allocate file: Read-only file system Link: https://lkml.kernel.org/r/20241101141557.3159432-1-usama.anjum@collabora.com Signed-off-by: Muhammad Usama Anjum Fixes: 3a103b5315b7 ("selftest: mm: Test if hugepage does not get leaked during __bio_release_pages()") Cc: Muhammad Usama Anjum Cc: Shuah Khan Cc: Donet Tom Cc: Signed-off-by: Andrew Morton --- tools/testing/selftests/mm/hugetlb_dio.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/mm/hugetlb_dio.c b/tools/testing/selftests/mm/hugetlb_dio.c index f9ac20c657ec..60001c142ce9 100644 --- a/tools/testing/selftests/mm/hugetlb_dio.c +++ b/tools/testing/selftests/mm/hugetlb_dio.c @@ -44,13 +44,6 @@ void run_dio_using_hugetlb(unsigned int start_off, unsigned int end_off) if (fd < 0) ksft_exit_fail_perror("Error opening file\n"); - /* Get the free huge pages before allocation */ - free_hpage_b = get_free_hugepages(); - if (free_hpage_b == 0) { - close(fd); - ksft_exit_skip("No free hugepage, exiting!\n"); - } - /* Allocate a hugetlb page */ orig_buffer = mmap(NULL, h_pagesize, mmap_prot, mmap_flags, -1, 0); if (orig_buffer == MAP_FAILED) { @@ -94,8 +87,20 @@ void run_dio_using_hugetlb(unsigned int start_off, unsigned int end_off) int main(void) { size_t pagesize = 0; + int fd; ksft_print_header(); + + /* Open the file to DIO */ + fd = open("/tmp", O_TMPFILE | O_RDWR | O_DIRECT, 0664); + if (fd < 0) + ksft_exit_skip("Unable to allocate file: %s\n", strerror(errno)); + close(fd); + + /* Check if huge pages are free */ + if (!get_free_hugepages()) + ksft_exit_skip("No free hugepage, exiting\n"); + ksft_set_plan(4); /* Get base page size */ -- cgit v1.2.3 From 45488345d4b60f5c3a0a5d78fee76f0f3be896b4 Mon Sep 17 00:00:00 2001 From: Andrew Paniakin Date: Mon, 28 Oct 2024 16:30:53 -0700 Subject: selftests/damon/huge_count_read_write: provide sufficiently large buffer for DEPRECATED file read Patch series "damon/{self,kunit}tests: minor fixups for DAMON debugfs interface tests". Fixup small broken window panes in DAMON selftests and kunit tests. First four patches clean up DAMON debugfs interface selftests output, by fixing segmentation fault of a test program (patch 1), removing unnecessary debugging messages (patch 2), and hiding error messages from expected failures (patches 3 and 4). Following two patches fix copy-paste mistakes in DAMON Kconfig help message that copied from debugfs kunit test (patch 5) and a comment on the debugfs kunit test code (patch 6). This patch (of 6): 'huge_count_read_write' crashes with segmentation fault when reading DEPRECATED file of DAMON debugfs interface. This is not causing any problem for users or other tests because the purpose of the test is just ensuring the read is not causing kernel warning messages. Nonetheless, it makes the output unnecessarily noisy, and the DEPRECATED file is not properly being tested. It happens because the size of the content of the file is larger than the size of the buffer for the read. The file contains about 170 characters. Increase the buffer size to 256 characters. Link: https://lkml.kernel.org/r/20241028233058.283381-1-sj@kernel.org Link: https://lkml.kernel.org/r/20241028233058.283381-2-sj@kernel.org Fixes: b4a002889d24 ("selftests/damon: test debugfs file reads/writes with huge count") Signed-off-by: Andrew Paniakin Signed-off-by: SeongJae Park Cc: Andrew Panyakin Cc: Brendan Higgins Cc: David Gow Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/damon/huge_count_read_write.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/damon/huge_count_read_write.c b/tools/testing/selftests/damon/huge_count_read_write.c index a6fe0689f88d..f3c199dc8eba 100644 --- a/tools/testing/selftests/damon/huge_count_read_write.c +++ b/tools/testing/selftests/damon/huge_count_read_write.c @@ -18,7 +18,7 @@ void write_read_with_huge_count(char *file) { int filedesc = open(file, O_RDWR); - char buf[25]; + char buf[256]; int ret; printf("%s %s\n", __func__, file); -- cgit v1.2.3 From e06a6b55ed3db832cb8fbbc2df38b367dbab51ed Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Mon, 28 Oct 2024 16:30:54 -0700 Subject: selftests/damon/huge_count_read_write: remove unnecessary debugging message The program prints expected errors from write/read of the files with invalid huge count, for only debugging purpose. It is only making the output noisy. Remove those. Link: https://lkml.kernel.org/r/20241028233058.283381-3-sj@kernel.org Fixes: b4a002889d24 ("selftests/damon: test debugfs file reads/writes with huge count") Signed-off-by: SeongJae Park Cc: Andrew Paniakin Cc: Brendan Higgins Cc: David Gow Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/damon/huge_count_read_write.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'tools') diff --git a/tools/testing/selftests/damon/huge_count_read_write.c b/tools/testing/selftests/damon/huge_count_read_write.c index f3c199dc8eba..53e69a669668 100644 --- a/tools/testing/selftests/damon/huge_count_read_write.c +++ b/tools/testing/selftests/damon/huge_count_read_write.c @@ -28,9 +28,7 @@ void write_read_with_huge_count(char *file) } write(filedesc, "", 0xfffffffful); - perror("after write: "); ret = read(filedesc, buf, 0xfffffffful); - perror("after read: "); close(filedesc); } -- cgit v1.2.3 From 82475d111de73b5688389d2736509bf30cb338d8 Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Mon, 28 Oct 2024 16:30:55 -0700 Subject: selftests/damon/_debugfs_common: hide expected error message from test_write_result() DAMON debugfs interface selftests use test_write_result() to check if valid or invalid writes to files of the interface success or fail as expected. File write error messages from expected failures are only making the output noisy. Hide such expected error messages. Link: https://lkml.kernel.org/r/20241028233058.283381-4-sj@kernel.org Fixes: b348eb7abd09 ("mm/damon: add user space selftests") Signed-off-by: SeongJae Park Cc: Andrew Paniakin Cc: Brendan Higgins Cc: David Gow Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/damon/_debugfs_common.sh | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/damon/_debugfs_common.sh b/tools/testing/selftests/damon/_debugfs_common.sh index aa995516870b..54d45791b0d9 100644 --- a/tools/testing/selftests/damon/_debugfs_common.sh +++ b/tools/testing/selftests/damon/_debugfs_common.sh @@ -8,7 +8,12 @@ test_write_result() { expect_reason=$4 expected=$5 - echo "$content" > "$file" + if [ "$expected" = "0" ] + then + echo "$content" > "$file" + else + echo "$content" > "$file" 2> /dev/null + fi if [ $? -ne "$expected" ] then echo "writing $content to $file doesn't return $expected" -- cgit v1.2.3 From 9b1266ee08c2e45684d58a53a48866a230c76bff Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Mon, 28 Oct 2024 16:30:56 -0700 Subject: selftests/damon/debugfs_duplicate_context_creation: hide errors from expected file write failures debugfs_duplicate_context_creation.sh does an invalid file write to ensure it fails. Check of the failure is sufficient, so the error message from the failure only makes the output unnecessarily noisy. Hide it. Link: https://lkml.kernel.org/r/20241028233058.283381-5-sj@kernel.org Fixes: ade38b8ca5ce ("selftest/damon: add a test for duplicate context dirs creation") Signed-off-by: SeongJae Park Cc: Andrew Paniakin Cc: Brendan Higgins Cc: David Gow Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/damon/debugfs_duplicate_context_creation.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/damon/debugfs_duplicate_context_creation.sh b/tools/testing/selftests/damon/debugfs_duplicate_context_creation.sh index 4a76e37ef16b..bd6c22d96ead 100755 --- a/tools/testing/selftests/damon/debugfs_duplicate_context_creation.sh +++ b/tools/testing/selftests/damon/debugfs_duplicate_context_creation.sh @@ -12,7 +12,7 @@ then exit 1 fi -if echo foo > "$DBGFS/mk_contexts" +if echo foo > "$DBGFS/mk_contexts" 2> /dev/null then echo "duplicate context creation success" exit 1 -- cgit v1.2.3 From 10299cdde869abab7a42fb5ab905a47a4e2cd24e Mon Sep 17 00:00:00 2001 From: John Sperbeck Date: Tue, 5 Nov 2024 19:40:31 -0800 Subject: KVM: selftests: use X86_MEMTYPE_WB instead of VMX_BASIC_MEM_TYPE_WB In 08a7d2525511 ("tools arch x86: Sync the msr-index.h copy with the kernel sources"), VMX_BASIC_MEM_TYPE_WB was removed. Use X86_MEMTYPE_WB instead. Fixes: 08a7d2525511 ("tools arch x86: Sync the msr-index.h copy with the kernel sources") Signed-off-by: John Sperbeck Message-ID: <20241106034031.503291-1-jsperbeck@google.com> Signed-off-by: Paolo Bonzini --- tools/testing/selftests/kvm/lib/x86_64/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/kvm/lib/x86_64/vmx.c b/tools/testing/selftests/kvm/lib/x86_64/vmx.c index 089b8925b6b2..d7ac122820bf 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/vmx.c +++ b/tools/testing/selftests/kvm/lib/x86_64/vmx.c @@ -200,7 +200,7 @@ static inline void init_vmcs_control_fields(struct vmx_pages *vmx) if (vmx->eptp_gpa) { uint64_t ept_paddr; struct eptPageTablePointer eptp = { - .memory_type = VMX_BASIC_MEM_TYPE_WB, + .memory_type = X86_MEMTYPE_WB, .page_walk_length = 3, /* + 1 */ .ad_enabled = ept_vpid_cap_supported(VMX_EPT_VPID_CAP_AD_BITS), .address = vmx->eptp_gpa >> PAGE_SHIFT_4K, -- cgit v1.2.3 From e32c260195e6ff72940ab7826e38e0a0066fc58f Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 5 Nov 2024 11:49:04 -1000 Subject: sched_ext: Enable the ops breather and eject BPF scheduler on softlockup On 2 x Intel Sapphire Rapids machines with 224 logical CPUs, a poorly behaving BPF scheduler can live-lock the system by making multiple CPUs bang on the same DSQ to the point where soft-lockup detection triggers before SCX's own watchdog can take action. It also seems possible that the machine can be live-locked enough to prevent scx_ops_helper, which is an RT task, from running in a timely manner. Implement scx_softlockup() which is called when three quarters of soft-lockup threshold has passed. The function immediately enables the ops breather and triggers an ops error to initiate ejection of the BPF scheduler. The previous and this patch combined enable the kernel to reliably recover the system from live-lock conditions that can be triggered by a poorly behaving BPF scheduler on Intel dual socket systems. Signed-off-by: Tejun Heo Cc: Douglas Anderson Cc: Andrew Morton --- tools/sched_ext/scx_show_state.py | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools') diff --git a/tools/sched_ext/scx_show_state.py b/tools/sched_ext/scx_show_state.py index c4b3fdda9a0b..b800d4f5f2e9 100644 --- a/tools/sched_ext/scx_show_state.py +++ b/tools/sched_ext/scx_show_state.py @@ -35,6 +35,8 @@ print(f'enabled : {read_static_key("__scx_ops_enabled")}') print(f'switching_all : {read_int("scx_switching_all")}') print(f'switched_all : {read_static_key("__scx_switched_all")}') print(f'enable_state : {ops_state_str(enable_state)} ({enable_state})') +print(f'in_softlockup : {prog["scx_in_softlockup"].value_()}') +print(f'breather_depth: {read_atomic("scx_ops_breather_depth")}') print(f'bypass_depth : {prog["scx_ops_bypass_depth"].value_()}') print(f'nr_rejected : {read_atomic("scx_nr_rejected")}') print(f'enable_seq : {read_atomic("scx_enable_seq")}') -- cgit v1.2.3 From 26ec3d7cc3f3aa591c8d5f3fde99df6caca92d02 Mon Sep 17 00:00:00 2001 From: Steve Clevenger Date: Fri, 8 Nov 2024 12:11:18 -0700 Subject: perf script cs_etm: Add map_pgoff to python dictionary MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Extract map_pgoff parameter from the dictionary, and adjust start/end range passed to objdump based on the value. A zero start_addr is filtered to prevent output of dso address range check failures. This script repeatedly sees a zero value passed in for       start_addr = cpu_data[str(cpu) + 'addr'] These zero values are not a new problem. The start_addr/stop_addr warning clutters the instruction trace output, hence this change. Signed-off-by: Steve Clevenger Reviewed-by: Leo Yan Cc: suzuki.poulose@arm.com Cc: james.clark@linaro.org Cc: mike.leach@linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: ilkka@os.amperecomputing.com Link: https://lore.kernel.org/r/8d9a1142dc58ffa34a000cb7b7a26055df0a37ec.1731027120.git.scclevenger@os.amperecomputing.com Signed-off-by: Namhyung Kim --- tools/perf/util/scripting-engines/trace-event-python.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index d7183134b669..e6d4711a7d69 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -793,7 +793,8 @@ static int set_regs_in_dict(PyObject *dict, static void set_sym_in_dict(PyObject *dict, struct addr_location *al, const char *dso_field, const char *dso_bid_field, const char *dso_map_start, const char *dso_map_end, - const char *sym_field, const char *symoff_field) + const char *sym_field, const char *symoff_field, + const char *map_pgoff) { char sbuild_id[SBUILD_ID_SIZE]; @@ -809,6 +810,8 @@ static void set_sym_in_dict(PyObject *dict, struct addr_location *al, PyLong_FromUnsignedLong(map__start(al->map))); pydict_set_item_string_decref(dict, dso_map_end, PyLong_FromUnsignedLong(map__end(al->map))); + pydict_set_item_string_decref(dict, map_pgoff, + PyLong_FromUnsignedLongLong(map__pgoff(al->map))); } if (al->sym) { pydict_set_item_string_decref(dict, sym_field, @@ -895,7 +898,7 @@ static PyObject *get_perf_sample_dict(struct perf_sample *sample, pydict_set_item_string_decref(dict, "comm", _PyUnicode_FromString(thread__comm_str(al->thread))); set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end", - "symbol", "symoff"); + "symbol", "symoff", "map_pgoff"); pydict_set_item_string_decref(dict, "callchain", callchain); @@ -920,7 +923,7 @@ static PyObject *get_perf_sample_dict(struct perf_sample *sample, PyBool_FromLong(1)); set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid", "addr_dso_map_start", "addr_dso_map_end", - "addr_symbol", "addr_symoff"); + "addr_symbol", "addr_symoff", "addr_map_pgoff"); } if (sample->flags) -- cgit v1.2.3 From e8328bf3cd135b5f443bed77f3791ac1633ae01e Mon Sep 17 00:00:00 2001 From: Steve Clevenger Date: Fri, 8 Nov 2024 12:11:17 -0700 Subject: perf script python: Adjust objdump start/end per map pgoff parameter MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Extract map_pgoff parameter from the dictionary, and adjust start/end range passed to objdump based on the value. A zero start_addr is filtered to prevent output of dso address range check failures. This script repeatedly sees a zero value passed in for       start_addr = cpu_data[str(cpu) + 'addr'] These zero values are not a new problem. The start_addr/stop_addr warning clutters the instruction trace output, hence this change. Signed-off-by: Steve Clevenger Reviewed-by: Leo Yan Cc: suzuki.poulose@arm.com Cc: james.clark@linaro.org Cc: mike.leach@linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Cc: ilkka@os.amperecomputing.com Link: https://lore.kernel.org/r/21ccdd22e664bdeccb878672d4b2c0518873c1e5.1731027120.git.scclevenger@os.amperecomputing.com Signed-off-by: Namhyung Kim --- tools/perf/scripts/python/arm-cs-trace-disasm.py | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'tools') diff --git a/tools/perf/scripts/python/arm-cs-trace-disasm.py b/tools/perf/scripts/python/arm-cs-trace-disasm.py index 1128d259b4f4..ba208c90d631 100755 --- a/tools/perf/scripts/python/arm-cs-trace-disasm.py +++ b/tools/perf/scripts/python/arm-cs-trace-disasm.py @@ -251,6 +251,10 @@ def process_event(param_dict): dso_start = get_optional(param_dict, "dso_map_start") dso_end = get_optional(param_dict, "dso_map_end") symbol = get_optional(param_dict, "symbol") + map_pgoff = get_optional(param_dict, "map_pgoff") + # check for valid map offset + if (str(map_pgoff) == '[unknown]'): + map_pgoff = 0 cpu = sample["cpu"] ip = sample["ip"] @@ -318,9 +322,10 @@ def process_event(param_dict): # Record for previous sample packet cpu_data[str(cpu) + 'addr'] = addr - # Handle CS_ETM_TRACE_ON packet if start_addr=0 and stop_addr=4 - if (start_addr == 0 and stop_addr == 4): - print("CPU%d: CS_ETM_TRACE_ON packet is inserted" % cpu) + # Filter out zero start_address. Optionally identify CS_ETM_TRACE_ON packet + if (start_addr == 0): + if ((stop_addr == 4) and (options.verbose == True)): + print("CPU%d: CS_ETM_TRACE_ON packet is inserted" % cpu) return if (start_addr < int(dso_start) or start_addr > int(dso_end)): @@ -337,13 +342,14 @@ def process_event(param_dict): # vm_start to zero. if (dso == "[kernel.kallsyms]" or dso_start == 0x400000): dso_vm_start = 0 + map_pgoff = 0 else: dso_vm_start = int(dso_start) dso_fname = get_dso_file_path(dso, dso_bid) if path.exists(dso_fname): - print_disam(dso_fname, dso_vm_start, start_addr, stop_addr) + print_disam(dso_fname, dso_vm_start, start_addr + map_pgoff, stop_addr + map_pgoff) else: - print("Failed to find dso %s for address range [ 0x%x .. 0x%x ]" % (dso, start_addr, stop_addr)) + print("Failed to find dso %s for address range [ 0x%x .. 0x%x ]" % (dso, start_addr + map_pgoff, stop_addr + map_pgoff)) print_srccode(comm, param_dict, sample, symbol, dso) -- cgit v1.2.3 From 35de42cdfb64af8357b8c531cc2dad28bde5c712 Mon Sep 17 00:00:00 2001 From: Yicong Yang Date: Tue, 5 Nov 2024 18:56:49 +0800 Subject: perf build: Include libtraceevent headers directly indicated by pkg-config Currently the libtraceevent's found by pkg-config, which give the include path as: [root@localhost tmp]# pkg-config --cflags libtraceevent -I/usr/local/include/traceevent So we should include the libtraceevent headers directly without "traceevent/" prefix. Update all the users. Fixes: 0f0e1f445690 ("perf build: Use pkg-config for feature check for libtrace{event,fs}") Suggested-by: Namhyung Kim Link: https://lore.kernel.org/linux-perf-users/ZyF5_Hf1iL01kldE@google.com/ Signed-off-by: Yicong Yang Cc: leo.yan@arm.com Cc: amadio@gentoo.org Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/20241105105649.45399-1-yangyicong@huawei.com Signed-off-by: Namhyung Kim --- tools/build/feature/test-libtraceevent.c | 2 +- tools/perf/builtin-kmem.c | 2 +- tools/perf/builtin-kwork.c | 2 +- tools/perf/builtin-report.c | 2 +- tools/perf/builtin-script.c | 2 +- tools/perf/builtin-timechart.c | 2 +- tools/perf/builtin-trace.c | 2 +- tools/perf/tests/evsel-tp-sched.c | 2 +- tools/perf/util/data-convert-bt.c | 2 +- tools/perf/util/data-convert-json.c | 2 +- tools/perf/util/debug.c | 2 +- tools/perf/util/evsel.c | 2 +- tools/perf/util/evsel_fprintf.c | 2 +- tools/perf/util/header.c | 2 +- tools/perf/util/python.c | 2 +- tools/perf/util/scripting-engines/trace-event-perl.c | 2 +- tools/perf/util/scripting-engines/trace-event-python.c | 2 +- tools/perf/util/sort.c | 2 +- tools/perf/util/trace-event-parse.c | 2 +- tools/perf/util/trace-event-read.c | 2 +- tools/perf/util/trace-event-scripting.c | 2 +- tools/perf/util/trace-event.c | 2 +- tools/perf/util/trace-event.h | 2 +- 23 files changed, 23 insertions(+), 23 deletions(-) (limited to 'tools') diff --git a/tools/build/feature/test-libtraceevent.c b/tools/build/feature/test-libtraceevent.c index 416b11ffd4b4..804ad80dbbd9 100644 --- a/tools/build/feature/test-libtraceevent.c +++ b/tools/build/feature/test-libtraceevent.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -#include +#include int main(void) { diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index a756147e2eec..4d8d94146f8d 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -36,7 +36,7 @@ #include #include -#include +#include static int kmem_slab; static int kmem_page; diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c index c1daf82c9b92..8234410cba4c 100644 --- a/tools/perf/builtin-kwork.c +++ b/tools/perf/builtin-kwork.c @@ -23,7 +23,7 @@ #include #include -#include +#include #include #include diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 45304ee5537c..048c91960ba9 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -70,7 +70,7 @@ #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif struct report { diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 6b6d4472db6e..9e47905f75a6 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -67,7 +67,7 @@ #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif static char const *script_name; diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c index 218c8b44d7be..9b50076449bd 100644 --- a/tools/perf/builtin-timechart.c +++ b/tools/perf/builtin-timechart.c @@ -38,7 +38,7 @@ #include "util/tracepoint.h" #include "util/util.h" #include -#include +#include #ifdef LACKS_OPEN_MEMSTREAM_PROTOTYPE FILE *open_memstream(char **ptr, size_t *sizeloc); diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index a661fbd870e7..156c3e829179 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -88,7 +88,7 @@ #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif #ifndef O_CLOEXEC diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c index 3da6a76eac38..226196fb9677 100644 --- a/tools/perf/tests/evsel-tp-sched.c +++ b/tools/perf/tests/evsel-tp-sched.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include -#include +#include #include "evsel.h" #include "tests.h" #include "debug.h" diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c index 021e9b1d5cc5..f0599c61fab4 100644 --- a/tools/perf/util/data-convert-bt.c +++ b/tools/perf/util/data-convert-bt.c @@ -36,7 +36,7 @@ #include "util/sample.h" #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif #define pr_N(n, fmt, ...) \ diff --git a/tools/perf/util/data-convert-json.c b/tools/perf/util/data-convert-json.c index 20bfb0884e9e..8304cd2d4a9c 100644 --- a/tools/perf/util/data-convert-json.c +++ b/tools/perf/util/data-convert-json.c @@ -28,7 +28,7 @@ #include "util/tool.h" #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif struct convert_json { diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c index d633d15329fa..995f6bb05b5f 100644 --- a/tools/perf/util/debug.c +++ b/tools/perf/util/debug.c @@ -27,7 +27,7 @@ #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #else #define LIBTRACEEVENT_VERSION 0 #endif diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index f780e30aa259..ef45a3f49056 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -70,7 +70,7 @@ #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif struct perf_missing_features perf_missing_features; diff --git a/tools/perf/util/evsel_fprintf.c b/tools/perf/util/evsel_fprintf.c index c2c0500d5da9..86b7f46f9e2a 100644 --- a/tools/perf/util/evsel_fprintf.c +++ b/tools/perf/util/evsel_fprintf.c @@ -14,7 +14,7 @@ #include "dso.h" #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif static int comma_fprintf(FILE *fp, bool *first, const char *fmt, ...) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index a6386d12afd7..fca27b316faf 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -58,7 +58,7 @@ #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif /* diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index ee3d43a7ba45..2096cdbaa53b 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -6,7 +6,7 @@ #include #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif #include #include "evlist.h" diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c index e16257d5ab2c..85b7f188f729 100644 --- a/tools/perf/util/scripting-engines/trace-event-perl.c +++ b/tools/perf/util/scripting-engines/trace-event-perl.c @@ -27,7 +27,7 @@ #include #include #include -#include +#include #include /* perl needs the following define, right after including stdbool.h */ diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index e6d4711a7d69..8bdae066e839 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -31,7 +31,7 @@ #include #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif #include "../build-id.h" diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 168c488f0178..9dd60c7869a2 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -35,7 +35,7 @@ #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif regex_t parent_regex; diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index d97830cdbd7e..41d53e1b43e7 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -12,7 +12,7 @@ #include #include -#include +#include static int get_common_field(struct scripting_context *context, int *offset, int *size, const char *type) diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c index 1162c49b8082..ecbbb93f0185 100644 --- a/tools/perf/util/trace-event-read.c +++ b/tools/perf/util/trace-event-read.c @@ -11,7 +11,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/tools/perf/util/trace-event-scripting.c b/tools/perf/util/trace-event-scripting.c index bd0000300c77..5596fcda2c10 100644 --- a/tools/perf/util/trace-event-scripting.c +++ b/tools/perf/util/trace-event-scripting.c @@ -10,7 +10,7 @@ #include #include #ifdef HAVE_LIBTRACEEVENT -#include +#include #endif #include "debug.h" diff --git a/tools/perf/util/trace-event.c b/tools/perf/util/trace-event.c index 8ad75b31e09b..6a8c66c64b70 100644 --- a/tools/perf/util/trace-event.c +++ b/tools/perf/util/trace-event.c @@ -8,7 +8,7 @@ #include #include #include -#include +#include #include #include #include "trace-event.h" diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index 0e5133f1b910..79b939f947dd 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -147,7 +147,7 @@ int common_lock_depth(struct scripting_context *context); int perf_sample__sprintf_flags(u32 flags, char *str, size_t sz); #if defined(LIBTRACEEVENT_VERSION) && LIBTRACEEVENT_VERSION >= MAKE_LIBTRACEEVENT_VERSION(1, 5, 0) -#include +#include static inline bool tep_field_is_relative(unsigned long flags) { -- cgit v1.2.3 From f4db95b68ae68ebaf91d35cc0487ac1cbd04261e Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 8 Nov 2024 16:37:53 -0800 Subject: tools api io: Ensure line_len_out is always initialized Ensure initialization to avoid compiler warnings about potential use of uninitialized variables. Signed-off-by: Ian Rogers Cc: Ravi Bangoria Cc: Yoshihiro Furudera Cc: Howard Chu Cc: Ze Gao Cc: Changbin Du Cc: Junhao He Cc: Weilin Wang Cc: James Clark Cc: Oliver Upton Cc: Athira Jajeev Link: https://lore.kernel.org/r/20241109003759.473460-2-irogers@google.com Signed-off-by: Namhyung Kim --- tools/lib/api/io.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/lib/api/io.h b/tools/lib/api/io.h index d3eb04d1bc89..1731996b2c32 100644 --- a/tools/lib/api/io.h +++ b/tools/lib/api/io.h @@ -189,6 +189,7 @@ static inline ssize_t io__getdelim(struct io *io, char **line_out, size_t *line_ err_out: free(line); *line_out = NULL; + *line_len_out = 0; return -ENOMEM; } -- cgit v1.2.3 From 4810b761f812da3ca33badd7861a04b58613a4a1 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 8 Nov 2024 16:37:54 -0800 Subject: perf hwmon_pmu: Add hwmon filename parser hwmon filenames have a specific encoding that will be used to give a config value. The encoding is described in: Documentation/hwmon/sysfs-interface.rst Add a function to parse the filename into consituent enums/ints that will then be amenable to config encoding. Note, things are done this way to allow mapping names to config and back without the use of hash/dynamic lookup tables. Signed-off-by: Ian Rogers Cc: Ravi Bangoria Cc: Yoshihiro Furudera Cc: Howard Chu Cc: Ze Gao Cc: Changbin Du Cc: Junhao He Cc: Weilin Wang Cc: James Clark Cc: Oliver Upton Cc: Athira Jajeev [namhyung: add #include for strlcpy()] Link: https://lore.kernel.org/r/20241109003759.473460-3-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/Build | 1 + tools/perf/util/hwmon_pmu.c | 145 ++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/hwmon_pmu.h | 111 +++++++++++++++++++++++++++++++++ 3 files changed, 257 insertions(+) create mode 100644 tools/perf/util/hwmon_pmu.c create mode 100644 tools/perf/util/hwmon_pmu.h (limited to 'tools') diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 1eedead5f2f2..78b990c04f71 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -83,6 +83,7 @@ perf-util-y += pmu.o perf-util-y += pmus.o perf-util-y += pmu-flex.o perf-util-y += pmu-bison.o +perf-util-y += hwmon_pmu.o perf-util-y += tool_pmu.o perf-util-y += svghelper.o perf-util-$(CONFIG_LIBTRACEEVENT) += trace-event-info.o diff --git a/tools/perf/util/hwmon_pmu.c b/tools/perf/util/hwmon_pmu.c new file mode 100644 index 000000000000..301793b13337 --- /dev/null +++ b/tools/perf/util/hwmon_pmu.c @@ -0,0 +1,145 @@ +// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) +#include "debug.h" +#include "hwmon_pmu.h" +#include +#include +#include +#include +#include +#include + +/** Strings that correspond to enum hwmon_type. */ +static const char * const hwmon_type_strs[HWMON_TYPE_MAX] = { + NULL, + "cpu", + "curr", + "energy", + "fan", + "humidity", + "in", + "intrusion", + "power", + "pwm", + "temp", +}; +#define LONGEST_HWMON_TYPE_STR "intrusion" + +/** Strings that correspond to enum hwmon_item. */ +static const char * const hwmon_item_strs[HWMON_ITEM__MAX] = { + NULL, + "accuracy", + "alarm", + "auto_channels_temp", + "average", + "average_highest", + "average_interval", + "average_interval_max", + "average_interval_min", + "average_lowest", + "average_max", + "average_min", + "beep", + "cap", + "cap_hyst", + "cap_max", + "cap_min", + "crit", + "crit_hyst", + "div", + "emergency", + "emergency_hist", + "enable", + "fault", + "freq", + "highest", + "input", + "label", + "lcrit", + "lcrit_hyst", + "lowest", + "max", + "max_hyst", + "min", + "min_hyst", + "mod", + "offset", + "pulses", + "rated_max", + "rated_min", + "reset_history", + "target", + "type", + "vid", +}; +#define LONGEST_HWMON_ITEM_STR "average_interval_max" + +static int hwmon_strcmp(const void *a, const void *b) +{ + const char *sa = a; + const char * const *sb = b; + + return strcmp(sa, *sb); +} + +bool parse_hwmon_filename(const char *filename, + enum hwmon_type *type, + int *number, + enum hwmon_item *item, + bool *alarm) +{ + char fn_type[24]; + const char **elem; + const char *fn_item = NULL; + size_t fn_item_len; + + assert(strlen(LONGEST_HWMON_TYPE_STR) < sizeof(fn_type)); + strlcpy(fn_type, filename, sizeof(fn_type)); + for (size_t i = 0; fn_type[i] != '\0'; i++) { + if (fn_type[i] >= '0' && fn_type[i] <= '9') { + fn_type[i] = '\0'; + *number = strtoul(&filename[i], (char **)&fn_item, 10); + if (*fn_item == '_') + fn_item++; + break; + } + if (fn_type[i] == '_') { + fn_type[i] = '\0'; + *number = -1; + fn_item = &filename[i + 1]; + break; + } + } + if (fn_item == NULL || fn_type[0] == '\0' || (item != NULL && fn_item[0] == '\0')) { + pr_debug("hwmon_pmu: not a hwmon file '%s'\n", filename); + return false; + } + elem = bsearch(&fn_type, hwmon_type_strs + 1, ARRAY_SIZE(hwmon_type_strs) - 1, + sizeof(hwmon_type_strs[0]), hwmon_strcmp); + if (!elem) { + pr_debug("hwmon_pmu: not a hwmon type '%s' in file name '%s'\n", + fn_type, filename); + return false; + } + + *type = elem - &hwmon_type_strs[0]; + if (!item) + return true; + + *alarm = false; + fn_item_len = strlen(fn_item); + if (fn_item_len > 6 && !strcmp(&fn_item[fn_item_len - 6], "_alarm")) { + assert(strlen(LONGEST_HWMON_ITEM_STR) < sizeof(fn_type)); + strlcpy(fn_type, fn_item, fn_item_len - 5); + fn_item = fn_type; + *alarm = true; + } + elem = bsearch(fn_item, hwmon_item_strs + 1, ARRAY_SIZE(hwmon_item_strs) - 1, + sizeof(hwmon_item_strs[0]), hwmon_strcmp); + if (!elem) { + pr_debug("hwmon_pmu: not a hwmon item '%s' in file name '%s'\n", + fn_item, filename); + return false; + } + *item = elem - &hwmon_item_strs[0]; + return true; +} diff --git a/tools/perf/util/hwmon_pmu.h b/tools/perf/util/hwmon_pmu.h new file mode 100644 index 000000000000..df0ab5ff7534 --- /dev/null +++ b/tools/perf/util/hwmon_pmu.h @@ -0,0 +1,111 @@ +/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ +#ifndef __HWMON_PMU_H +#define __HWMON_PMU_H + +#include + +/** + * enum hwmon_type: + * + * As described in Documentation/hwmon/sysfs-interface.rst hwmon events are + * defined over multiple files of the form _. This enum + * captures potential values. + * + * This enum is exposed for testing. + */ +enum hwmon_type { + HWMON_TYPE_NONE, + + HWMON_TYPE_CPU, + HWMON_TYPE_CURR, + HWMON_TYPE_ENERGY, + HWMON_TYPE_FAN, + HWMON_TYPE_HUMIDITY, + HWMON_TYPE_IN, + HWMON_TYPE_INTRUSION, + HWMON_TYPE_POWER, + HWMON_TYPE_PWM, + HWMON_TYPE_TEMP, + + HWMON_TYPE_MAX +}; + +/** + * enum hwmon_item: + * + * Similar to enum hwmon_type but describes the item part of a a sysfs filename. + * + * This enum is exposed for testing. + */ +enum hwmon_item { + HWMON_ITEM_NONE, + + HWMON_ITEM_ACCURACY, + HWMON_ITEM_ALARM, + HWMON_ITEM_AUTO_CHANNELS_TEMP, + HWMON_ITEM_AVERAGE, + HWMON_ITEM_AVERAGE_HIGHEST, + HWMON_ITEM_AVERAGE_INTERVAL, + HWMON_ITEM_AVERAGE_INTERVAL_MAX, + HWMON_ITEM_AVERAGE_INTERVAL_MIN, + HWMON_ITEM_AVERAGE_LOWEST, + HWMON_ITEM_AVERAGE_MAX, + HWMON_ITEM_AVERAGE_MIN, + HWMON_ITEM_BEEP, + HWMON_ITEM_CAP, + HWMON_ITEM_CAP_HYST, + HWMON_ITEM_CAP_MAX, + HWMON_ITEM_CAP_MIN, + HWMON_ITEM_CRIT, + HWMON_ITEM_CRIT_HYST, + HWMON_ITEM_DIV, + HWMON_ITEM_EMERGENCY, + HWMON_ITEM_EMERGENCY_HIST, + HWMON_ITEM_ENABLE, + HWMON_ITEM_FAULT, + HWMON_ITEM_FREQ, + HWMON_ITEM_HIGHEST, + HWMON_ITEM_INPUT, + HWMON_ITEM_LABEL, + HWMON_ITEM_LCRIT, + HWMON_ITEM_LCRIT_HYST, + HWMON_ITEM_LOWEST, + HWMON_ITEM_MAX, + HWMON_ITEM_MAX_HYST, + HWMON_ITEM_MIN, + HWMON_ITEM_MIN_HYST, + HWMON_ITEM_MOD, + HWMON_ITEM_OFFSET, + HWMON_ITEM_PULSES, + HWMON_ITEM_RATED_MAX, + HWMON_ITEM_RATED_MIN, + HWMON_ITEM_RESET_HISTORY, + HWMON_ITEM_TARGET, + HWMON_ITEM_TYPE, + HWMON_ITEM_VID, + + HWMON_ITEM__MAX, +}; + +/** + * parse_hwmon_filename() - Parse filename into constituent parts. + * + * @filename: To be parsed, of the form _. + * @type: The type defined from the parsed file name. + * @number: The number of the type, for example there may be more than 1 fan. + * @item: A hwmon may have multiple associated items. + * @alarm: Is the filename for an alarm value? + * + * An example of a hwmon filename is "temp1_input". The type is temp for a + * temperature value. The number is 1. The item within the file is an input + * value - the temperature itself. This file doesn't contain an alarm value. + * + * Exposed for testing. + */ +bool parse_hwmon_filename(const char *filename, + enum hwmon_type *type, + int *number, + enum hwmon_item *item, + bool *alarm); + +#endif /* __HWMON_PMU_H */ -- cgit v1.2.3 From 8c329057def8e3409a82839b1a730935b77feeab Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 8 Nov 2024 16:37:55 -0800 Subject: perf test: Add hwmon filename parser test Filename parsing maps a hwmon filename to constituent parts enum/int parts for the hwmon config value. Add a test case for the parsing. Signed-off-by: Ian Rogers Cc: Ravi Bangoria Cc: Yoshihiro Furudera Cc: Howard Chu Cc: Ze Gao Cc: Changbin Du Cc: Junhao He Cc: Weilin Wang Cc: James Clark Cc: Oliver Upton Cc: Athira Jajeev [namhyung: add #include for strlcpy()] Link: https://lore.kernel.org/r/20241109003759.473460-4-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/tests/Build | 1 + tools/perf/tests/builtin-test.c | 1 + tools/perf/tests/hwmon_pmu.c | 111 ++++++++++++++++++++++++++++++++++++++++ tools/perf/tests/tests.h | 1 + 4 files changed, 114 insertions(+) create mode 100644 tools/perf/tests/hwmon_pmu.c (limited to 'tools') diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index 01ed9335db4d..ec4e1f034742 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -66,6 +66,7 @@ perf-test-y += sigtrap.o perf-test-y += event_groups.o perf-test-y += symbols.o perf-test-y += util.o +perf-test-y += hwmon_pmu.o perf-test-y += tool_pmu.o ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc)) diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index d2cabaa8ad92..8dcf74d3c0a3 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -71,6 +71,7 @@ static struct test_suite *generic_tests[] = { &suite__PERF_RECORD, &suite__pmu, &suite__pmu_events, + &suite__hwmon_pmu, &suite__tool_pmu, &suite__dso_data, &suite__perf_evsel__roundtrip_name_test, diff --git a/tools/perf/tests/hwmon_pmu.c b/tools/perf/tests/hwmon_pmu.c new file mode 100644 index 000000000000..111fc5c5618a --- /dev/null +++ b/tools/perf/tests/hwmon_pmu.c @@ -0,0 +1,111 @@ +// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) +#include "debug.h" +#include "hwmon_pmu.h" +#include "tests.h" +#include +#include +#include + +static int test__parse_hwmon_filename(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + const struct hwmon_parse_test { + const char *filename; + enum hwmon_type type; + int number; + enum hwmon_item item; + bool alarm; + bool parse_ok; + } tests[] = { + { + .filename = "cpu0_accuracy", + .type = HWMON_TYPE_CPU, + .number = 0, + .item = HWMON_ITEM_ACCURACY, + .alarm = false, + .parse_ok = true, + }, + { + .filename = "temp1_input", + .type = HWMON_TYPE_TEMP, + .number = 1, + .item = HWMON_ITEM_INPUT, + .alarm = false, + .parse_ok = true, + }, + { + .filename = "fan2_vid", + .type = HWMON_TYPE_FAN, + .number = 2, + .item = HWMON_ITEM_VID, + .alarm = false, + .parse_ok = true, + }, + { + .filename = "power3_crit_alarm", + .type = HWMON_TYPE_POWER, + .number = 3, + .item = HWMON_ITEM_CRIT, + .alarm = true, + .parse_ok = true, + }, + { + .filename = "intrusion4_average_interval_min_alarm", + .type = HWMON_TYPE_INTRUSION, + .number = 4, + .item = HWMON_ITEM_AVERAGE_INTERVAL_MIN, + .alarm = true, + .parse_ok = true, + }, + { + .filename = "badtype5_baditem", + .type = HWMON_TYPE_NONE, + .number = 5, + .item = HWMON_ITEM_NONE, + .alarm = false, + .parse_ok = false, + }, + { + .filename = "humidity6_baditem", + .type = HWMON_TYPE_NONE, + .number = 6, + .item = HWMON_ITEM_NONE, + .alarm = false, + .parse_ok = false, + }, + }; + + for (size_t i = 0; i < ARRAY_SIZE(tests); i++) { + enum hwmon_type type; + int number; + enum hwmon_item item; + bool alarm; + + TEST_ASSERT_EQUAL("parse_hwmon_filename", + parse_hwmon_filename( + tests[i].filename, + &type, + &number, + &item, + &alarm), + tests[i].parse_ok + ); + if (tests[i].parse_ok) { + TEST_ASSERT_EQUAL("parse_hwmon_filename type", type, tests[i].type); + TEST_ASSERT_EQUAL("parse_hwmon_filename number", number, tests[i].number); + TEST_ASSERT_EQUAL("parse_hwmon_filename item", item, tests[i].item); + TEST_ASSERT_EQUAL("parse_hwmon_filename alarm", alarm, tests[i].alarm); + } + } + return TEST_OK; +} + +static struct test_case tests__hwmon_pmu[] = { + TEST_CASE("Basic parsing test", parse_hwmon_filename), + { .name = NULL, } +}; + +struct test_suite suite__hwmon_pmu = { + .desc = "Hwmon PMU", + .test_cases = tests__hwmon_pmu, +}; diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index af284dd47e5c..cb58b43aa063 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -92,6 +92,7 @@ DECLARE_SUITE(perf_evsel__tp_sched_test); DECLARE_SUITE(syscall_openat_tp_fields); DECLARE_SUITE(pmu); DECLARE_SUITE(pmu_events); +DECLARE_SUITE(hwmon_pmu); DECLARE_SUITE(tool_pmu); DECLARE_SUITE(attr); DECLARE_SUITE(dso_data); -- cgit v1.2.3 From 53cc0b351ec99278447d6c253c37fa61f4b35da0 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Fri, 8 Nov 2024 16:37:56 -0800 Subject: perf hwmon_pmu: Add a tool PMU exposing events from hwmon in sysfs Add a tool PMU for hwmon events but don't enable. The hwmon sysfs ABI is defined in Documentation/hwmon/sysfs-interface.rst. Create a PMU that reads the hwmon input and can be used in `perf stat` and metrics much as an uncore PMU can. For example, when enabled by a later patch, the following shows reading the CPU temperature and 2 fan speeds alongside the uncore frequency: ``` $ perf stat -e temp_cpu,fan1,hwmon_thinkpad/fan2/,tool/num_cpus_online/ -M UNCORE_FREQ -I 1000 1.001153138 52.00 'C temp_cpu 1.001153138 2,588 rpm fan1 1.001153138 2,482 rpm hwmon_thinkpad/fan2/ 1.001153138 8 tool/num_cpus_online/ 1.001153138 1,077,101,397 UNC_CLOCK.SOCKET # 1.08 UNCORE_FREQ 1.001153138 1,012,773,595 duration_time ... ``` The PMUs are named from /sys/class/hwmon/hwmon/name and have an alias of hwmon. Hwmon data is presented in multiple _ files. The is used to identify the event as is the followed by the contents of the _label file if it exists. The _input file gives the data read by perf. When enabled by a later patch, in `perf list` the other hwmon files are used to give a richer description, for example: ``` hwmon: temp1 [Temperature in unit acpitz named temp1. Unit: hwmon_acpitz] in0 [Voltage in unit bat0 named in0. Unit: hwmon_bat0] temp_core_0 OR temp2 [Temperature in unit coretemp named Core 0. crit=100'C,max=100'C crit_alarm=0'C. Unit: hwmon_coretemp] temp_core_1 OR temp3 [Temperature in unit coretemp named Core 1. crit=100'C,max=100'C crit_alarm=0'C. Unit: hwmon_coretemp] ... temp_package_id_0 OR temp1 [Temperature in unit coretemp named Package id 0. crit=100'C,max=100'C crit_alarm=0'C. Unit: hwmon_coretemp] temp1 [Temperature in unit iwlwifi_1 named temp1. Unit: hwmon_iwlwifi_1] temp_composite OR temp1 [Temperature in unit nvme named Composite. alarm=0'C,crit=86.85'C,max=75.85'C, min=-273.15'C. Unit: hwmon_nvme] temp_sensor_1 OR temp2 [Temperature in unit nvme named Sensor 1. max=65261.8'C,min=-273.15'C. Unit: hwmon_nvme] temp_sensor_2 OR temp3 [Temperature in unit nvme named Sensor 2. max=65261.8'C,min=-273.15'C. Unit: hwmon_nvme] fan1 [Fan in unit thinkpad named fan1. Unit: hwmon_thinkpad] fan2 [Fan in unit thinkpad named fan2. Unit: hwmon_thinkpad] ... temp_cpu OR temp1 [Temperature in unit thinkpad named CPU. Unit: hwmon_thinkpad] temp_gpu OR temp2 [Temperature in unit thinkpad named GPU. Unit: hwmon_thinkpad] curr1 [Current in unit ucsi_source_psy_usbc000_0 named curr1. max=1.5A. Unit: hwmon_ucsi_source_psy_usbc000_0] in0 [Voltage in unit ucsi_source_psy_usbc000_0 named in0. max=5V,min=5V. Unit: hwmon_ucsi_source_psy_usbc000_0] ``` As there may be multiple hwmon devices a range of PMU types are reserved for their use and to identify the PMU as belonging to the hwmon types. Signed-off-by: Ian Rogers Cc: Ravi Bangoria Cc: Yoshihiro Furudera Cc: Howard Chu Cc: Ze Gao Cc: Changbin Du Cc: Junhao He Cc: Weilin Wang Cc: James Clark Cc: Oliver Upton Cc: Athira Jajeev Link: https://lore.kernel.org/r/20241109003759.473460-5-irogers@google.com Signed-off-by: Namhyung Kim --- tools/perf/util/hwmon_pmu.c | 682 ++++++++++++++++++++++++++++++++++++++++++++ tools/perf/util/hwmon_pmu.h | 40 +++ tools/perf/util/pmu.h | 2 + 3 files changed, 724 insertions(+) (limited to 'tools') diff --git a/tools/perf/util/hwmon_pmu.c b/tools/perf/util/hwmon_pmu.c index 301793b13337..ac2245acdc6d 100644 --- a/tools/perf/util/hwmon_pmu.c +++ b/tools/perf/util/hwmon_pmu.c @@ -1,12 +1,26 @@ // SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) +#include "counts.h" #include "debug.h" +#include "evsel.h" +#include "hashmap.h" #include "hwmon_pmu.h" +#include "pmu.h" +#include +#include +#include +#include #include +#include +#include +#include #include #include #include +#include +#include #include #include +#include /** Strings that correspond to enum hwmon_type. */ static const char * const hwmon_type_strs[HWMON_TYPE_MAX] = { @@ -73,6 +87,79 @@ static const char * const hwmon_item_strs[HWMON_ITEM__MAX] = { }; #define LONGEST_HWMON_ITEM_STR "average_interval_max" +static const char *const hwmon_units[HWMON_TYPE_MAX] = { + NULL, + "V", /* cpu */ + "A", /* curr */ + "J", /* energy */ + "rpm", /* fan */ + "%", /* humidity */ + "V", /* in */ + "", /* intrusion */ + "W", /* power */ + "Hz", /* pwm */ + "'C", /* temp */ +}; + +struct hwmon_pmu { + struct perf_pmu pmu; + struct hashmap events; + int hwmon_dir_fd; +}; + +/** + * union hwmon_pmu_event_key: Key for hwmon_pmu->events as such each key + * represents an event. + * + * Related hwmon files start that this key represents. + */ +union hwmon_pmu_event_key { + long type_and_num; + struct { + int num :16; + enum hwmon_type type :8; + }; +}; + +/** + * struct hwmon_pmu_event_value: Value in hwmon_pmu->events. + * + * Hwmon files are of the form _ and may have a suffix + * _alarm. + */ +struct hwmon_pmu_event_value { + /** @items: which item files are present. */ + DECLARE_BITMAP(items, HWMON_ITEM__MAX); + /** @alarm_items: which item files are present. */ + DECLARE_BITMAP(alarm_items, HWMON_ITEM__MAX); + /** @label: contents of _label if present. */ + char *label; + /** @name: name computed from label of the form _