/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@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);
}
--
