Commit 8e15b79c authored Nov 30, 2009 by Tim Blechmann Committed by Pekka Enberg Dec 06, 2009

SLAB: Fix unlikely() annotation in __cache_alloc_node()

Branch profiling on my nehalem machine showed 99% incorrect branch hints:

   28459  7678524  99 __cache_alloc_node             slab.c               3551

Discussion on lkml [1] led to the solution to remove this hint.

[1] http://patchwork.kernel.org/patch/63517/



Signed-off-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

parent ce79ddc8

mm/slab.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3320,7 +3320,7 @@ __cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid,
		cache_alloc_debugcheck_before(cachep, flags);
		local_irq_save(save_flags);

		if (unlikely(nodeid == -1))
		if (nodeid == -1)
		nodeid = numa_node_id();

		if (unlikely(!cachep->nodelists[nodeid])) {