diff options
| author | Babu Moger <babu.moger@amd.com> | 2025-09-05 16:34:24 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-09-15 12:40:38 +0200 |
| commit | f9ae5913d47cda67481a4f54cc3273d3d1d00a01 (patch) | |
| tree | cf0b80a79a83fa64419e2a883b8d20a50ee41a8d /fs/resctrl/rdtgroup.c | |
| parent | ea274cbeaf8f0667267b347e3f84797439cdab4e (diff) | |
fs/resctrl: Provide interface to update the event configurations
When "mbm_event" counter assignment mode is enabled, users can modify the
event configuration by writing to the 'event_filter' resctrl file. The event
configurations for mbm_event mode are located in
/sys/fs/resctrl/info/L3_MON/event_configs/.
Update the assignments of all CTRL_MON and MON resource groups when the event
configuration is modified.
Example:
$ mount -t resctrl resctrl /sys/fs/resctrl
$ cd /sys/fs/resctrl/
$ cat info/L3_MON/event_configs/mbm_local_bytes/event_filter
local_reads,local_non_temporal_writes,local_reads_slow_memory
$ echo "local_reads,local_non_temporal_writes" >
info/L3_MON/event_configs/mbm_total_bytes/event_filter
$ cat info/L3_MON/event_configs/mbm_total_bytes/event_filter
local_reads,local_non_temporal_writes
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/cover.1757108044.git.babu.moger@amd.com
Diffstat (limited to 'fs/resctrl/rdtgroup.c')
| -rw-r--r-- | fs/resctrl/rdtgroup.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/resctrl/rdtgroup.c b/fs/resctrl/rdtgroup.c index 8f0c403e3fb5..e90bc808fe53 100644 --- a/fs/resctrl/rdtgroup.c +++ b/fs/resctrl/rdtgroup.c @@ -1925,9 +1925,10 @@ static struct rftype res_common_files[] = { }, { .name = "event_filter", - .mode = 0444, + .mode = 0644, .kf_ops = &rdtgroup_kf_single_ops, .seq_show = event_filter_show, + .write = event_filter_write, }, { .name = "mbm_assign_mode", |