diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-05-05 08:20:52 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-05-05 08:21:03 +0200 |
| commit | 415812f2d6b856d33ede9bf4a2b95575dbbb3d4e (patch) | |
| tree | 4daf9ca52f89ea59453538b406f584d47c77aff3 /kernel/module.c | |
| parent | 42fc6c6cb1662ba2fa727dd01c9473c63be4e3b6 (diff) | |
| parent | d3b5d35290d729a2518af00feca867385a1b08fa (diff) | |
Merge branch 'linus' into x86/urgent, to pick up dependent commits
We are going to fix a bug introduced by a more recent commit, so
refresh the tree.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/module.c')
| -rw-r--r-- | kernel/module.c | 40 |
1 files changed, 28 insertions, 12 deletions
diff --git a/kernel/module.c b/kernel/module.c index 7eba6dea4f41..6d9988031c5b 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -665,16 +665,7 @@ static void percpu_modcopy(struct module *mod, memcpy(per_cpu_ptr(mod->percpu, cpu), from, size); } -/** - * is_module_percpu_address - test whether address is from module static percpu - * @addr: address to test - * - * Test whether @addr belongs to module static percpu area. - * - * RETURNS: - * %true if @addr is from module static percpu area - */ -bool is_module_percpu_address(unsigned long addr) +bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr) { struct module *mod; unsigned int cpu; @@ -688,9 +679,15 @@ bool is_module_percpu_address(unsigned long addr) continue; for_each_possible_cpu(cpu) { void *start = per_cpu_ptr(mod->percpu, cpu); + void *va = (void *)addr; - if ((void *)addr >= start && - (void *)addr < start + mod->percpu_size) { + if (va >= start && va < start + mod->percpu_size) { + if (can_addr) { + *can_addr = (unsigned long) (va - start); + *can_addr += (unsigned long) + per_cpu_ptr(mod->percpu, + get_boot_cpu_id()); + } preempt_enable(); return true; } @@ -701,6 +698,20 @@ bool is_module_percpu_address(unsigned long addr) return false; } +/** + * is_module_percpu_address - test whether address is from module static percpu + * @addr: address to test + * + * Test whether @addr belongs to module static percpu area. + * + * RETURNS: + * %true if @addr is from module static percpu area + */ +bool is_module_percpu_address(unsigned long addr) +{ + return __is_module_percpu_address(addr, NULL); +} + #else /* ... !CONFIG_SMP */ static inline void __percpu *mod_percpu(struct module *mod) @@ -732,6 +743,11 @@ bool is_module_percpu_address(unsigned long addr) return false; } +bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr) +{ + return false; +} + #endif /* CONFIG_SMP */ #define MODINFO_ATTR(field) \ |