linux-kernel - [PATCH 4/5] sched_fair.c: remove branch hint

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Date:	Tue, 24 Nov 2009 11:55:45 +0100
From:	Tim Blechmann <tim@...ngt.org>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH 4/5] sched_fair.c: remove branch hint

branch hint profiling of my nehalem machine, showed 90% incorrect
branch hints:

15728471 158903754  90 pick_next_task_fair            sched_fair.c
   1555

Signed-off-by: Tim Blechmann <tim@...ngt.org>
---
 kernel/sched_fair.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index e5945df..5a0965c 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1552,7 +1552,7 @@ static struct task_struct
*pick_next_task_fair(struct rq *rq)
 	struct cfs_rq *cfs_rq = &rq->cfs;
 	struct sched_entity *se;
 -	if (unlikely(!cfs_rq->nr_running))
+	if (!cfs_rq->nr_running)
 		return NULL;
  	do {
-- 
1.6.4.2



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