Commit 9de1bc87 authored Aug 02, 2013 by Joonsoo Kim Committed by Pekka Enberg Aug 14, 2013

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>

parent 68f06650

mm/slab_common.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}