linux-kernel - [PATCH 4/8] sched: change pick_next_task_fair to h_nr

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Date:	Sun, 18 Aug 2013 16:25:18 +0800
From:	Lei Wen <leiwen@...vell.com>
To:	Paul Turner <pjt@...gle.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>, <mingo@...hat.com>,
	<leiwen@...vell.com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 4/8] sched: change pick_next_task_fair to h_nr_running

Since pick_next_task_fair only want to ensure there is some task in the
run queue to be picked up, it should use the h_nr_running instead of
nr_running, since nr_running cannot present all tasks if group existed.

Signed-off-by: Lei Wen <leiwen@...vell.com>
---
 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 9869d4d..33576eb 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3653,7 +3653,7 @@ static struct task_struct *pick_next_task_fair(struct rq *rq)
 	struct cfs_rq *cfs_rq = &rq->cfs;
 	struct sched_entity *se;
 
-	if (!cfs_rq->nr_running)
+	if (!cfs_rq->h_nr_running)
 		return NULL;
 
 	do {
-- 
1.7.5.4

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