[PATCH] slab: Report caller of kzalloc() rather than kzalloc() itself.
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From: Tetsuo Handa on 22 Mar 2010 01:30 /proc/slab_allocators may report kzalloc() itself rather than caller of kzalloc() if CONFIG_OPTIMIZE_INLINING=y . # grep zalloc /proc/slab_allocators | head scsi_cmd_cache: 2 kmem_cache_zalloc+0xb/0xd vm_area_struct: 355 kmem_cache_zalloc+0xb/0xd debug_objects_cache: 555 kmem_cache_zalloc+0xb/0xd size-2048: 3 kzalloc+0xb/0xd size-2048: 8 kzalloc+0xb/0xd size-2048: 1 kzalloc+0xb/0xd size-2048: 3 kzalloc+0xb/0xd size-2048: 2 kzalloc+0xb/0xd size-1024: 19 kzalloc+0xb/0xd size-1024: 1 kzalloc+0xb/0xd This behavior is not helpful for finding allocators. Report caller of kzalloc() rather than kzalloc() itself by changing "inline" to "__always_inline". Signed-off-by: Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> --- slab.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index 4884462..907b277 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -305,7 +305,8 @@ extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long); /* * Shortcuts */ -static inline void *kmem_cache_zalloc(struct kmem_cache *k, gfp_t flags) +static __always_inline void *kmem_cache_zalloc(struct kmem_cache *k, + gfp_t flags) { return kmem_cache_alloc(k, flags | __GFP_ZERO); } @@ -315,7 +316,7 @@ static inline void *kmem_cache_zalloc(struct kmem_cache *k, gfp_t flags) * @size: how many bytes of memory are required. * @flags: the type of memory to allocate (see kmalloc). */ -static inline void *kzalloc(size_t size, gfp_t flags) +static __always_inline void *kzalloc(size_t size, gfp_t flags) { return kmalloc(size, flags | __GFP_ZERO); } @@ -326,7 +327,7 @@ static inline void *kzalloc(size_t size, gfp_t flags) * @flags: the type of memory to allocate (see kmalloc). * @node: memory node from which to allocate */ -static inline void *kzalloc_node(size_t size, gfp_t flags, int node) +static __always_inline void *kzalloc_node(size_t size, gfp_t flags, int node) { return kmalloc_node(size, flags | __GFP_ZERO, node); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |