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authorCatalin Marinas <catalin.marinas@arm.com>2011-09-26 20:12:53 +0400
committerCatalin Marinas <catalin.marinas@arm.com>2011-12-02 20:12:42 +0400
commitf528f0b8e53d73b18be71e96693cfab9322f33c7 (patch)
tree5a25d6ac1c2f18561e554074aa7c06bf3d899183 /include/linux/kmemleak.h
parent74341703edca6bc68a165a18453071b097828407 (diff)
downloadlinux-f528f0b8e53d73b18be71e96693cfab9322f33c7.tar.xz
kmemleak: Handle percpu memory allocation
This patch adds kmemleak callbacks from the percpu allocator, reducing a number of false positives caused by kmemleak not scanning such memory blocks. The percpu chunks are never reported as leaks because of current kmemleak limitations with the __percpu pointer not pointing directly to the actual chunks. Reported-by: Huajun Li <huajun.li.lee@gmail.com> Acked-by: Christoph Lameter <cl@gentwo.org> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'include/linux/kmemleak.h')
-rw-r--r--include/linux/kmemleak.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/kmemleak.h b/include/linux/kmemleak.h
index 99d9a6766f7e..2a5e5548a1d2 100644
--- a/include/linux/kmemleak.h
+++ b/include/linux/kmemleak.h
@@ -26,8 +26,10 @@
extern void kmemleak_init(void) __ref;
extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
gfp_t gfp) __ref;
+extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size) __ref;
extern void kmemleak_free(const void *ptr) __ref;
extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
+extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
extern void kmemleak_padding(const void *ptr, unsigned long offset,
size_t size) __ref;
extern void kmemleak_not_leak(const void *ptr) __ref;
@@ -68,6 +70,9 @@ static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
gfp_t gfp)
{
}
+static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size)
+{
+}
static inline void kmemleak_free(const void *ptr)
{
}
@@ -77,6 +82,9 @@ static inline void kmemleak_free_part(const void *ptr, size_t size)
static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags)
{
}
+static inline void kmemleak_free_percpu(const void __percpu *ptr)
+{
+}
static inline void kmemleak_not_leak(const void *ptr)
{
}