linux-kernel - [tip:sched/core] sched: Fix buglet in return_cfs_rq

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Date:	Fri, 18 Nov 2011 15:41:27 -0800
From:	tip-bot for Paul Turner <pjt@...gle.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	a.p.zijlstra@...llo.nl, pjt@...gle.com, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:sched/core] sched: Fix buglet in return_cfs_rq_runtime()

Commit-ID:  fccfdc6f0d8c83c854eeb6d93aa158f0e551bd49
Gitweb:     http://git.kernel.org/tip/fccfdc6f0d8c83c854eeb6d93aa158f0e551bd49
Author:     Paul Turner <pjt@...gle.com>
AuthorDate: Mon, 7 Nov 2011 20:26:34 -0800
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 16 Nov 2011 08:43:45 +0100

sched: Fix buglet in return_cfs_rq_runtime()

In return_cfs_rq_runtime() we want to return bandwidth when there are no
remaining tasks, not "return" when this is the case.

Signed-off-by: Paul Turner <pjt@...gle.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/20111108042736.623812423@google.com
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 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 ba0e1f4..a78ed27 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1756,7 +1756,7 @@ static void __return_cfs_rq_runtime(struct cfs_rq *cfs_rq)
 
 static __always_inline void return_cfs_rq_runtime(struct cfs_rq *cfs_rq)
 {
-	if (!cfs_rq->runtime_enabled || !cfs_rq->nr_running)
+	if (!cfs_rq->runtime_enabled || cfs_rq->nr_running)
 		return;
 
 	__return_cfs_rq_runtime(cfs_rq);
--
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