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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2013-08-02 06:02:42 +0400
committerPekka Enberg <penberg@kernel.org>2013-08-14 19:26:10 +0400
commit9de1bc875261411bf0a900e90cfe0c7a31c4917b (patch)
tree8452af4e203a28294f86734c17619a048e31c755 /mm/slab_common.c
parent68f06650ea63f38e1cca7b5bbd56a9c1b8ac5209 (diff)
downloadlinux-9de1bc875261411bf0a900e90cfe0c7a31c4917b.tar.xz
mm, slab_common: add 'unlikely' to size check of kmalloc_slab()
Size is usually below than KMALLOC_MAX_SIZE. If we add a 'unlikely' macro, compiler can make better code. Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm/slab_common.c')
-rw-r--r--mm/slab_common.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 538bade6df7d..f0410eb61741 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -373,7 +373,7 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags)
{
int index;
- if (size > KMALLOC_MAX_SIZE) {
+ if (unlikely(size > KMALLOC_MAX_SIZE)) {
WARN_ON_ONCE(!(flags & __GFP_NOWARN));
return NULL;
}