Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-29 06:12:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

mm, slab_common: add 'unlikely' to size check of kmalloc_slab()

Browse Source 
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>
This commit is contained in:
Joonsoo Kim 2013-08-02 11:02:42 +09:00 committed by Pekka Enberg
parent 68f06650ea
commit 9de1bc8752
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
mm/slab_common.c
View File

@ -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;
}