linux-kernel - [PATCH] sched/fair: Fix the misuse of cfs_rq in sync

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Message-Id: <1468050862-18864-1-git-send-email-xlpang@redhat.com>
Date:	Sat,  9 Jul 2016 15:54:22 +0800
From:	Xunlei Pang <xlpang@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Konstantin Khlebnikov <khlebnikov@...dex-team.ru>,
	Xunlei Pang <xlpang@...hat.com>
Subject: [PATCH] sched/fair: Fix the misuse of cfs_rq in sync_throttle()

Should update "cfs_rq->throttled_clock_task" other than pcfs_rq's.

Signed-off-by: Xunlei Pang <xlpang@...hat.com>
---
 kernel/sched/fair.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 4088eed..039de34 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4269,7 +4269,7 @@ static void sync_throttle(struct task_group *tg, int cpu)
 	pcfs_rq = tg->parent->cfs_rq[cpu];
 
 	cfs_rq->throttle_count = pcfs_rq->throttle_count;
-	pcfs_rq->throttled_clock_task = rq_clock_task(cpu_rq(cpu));
+	cfs_rq->throttled_clock_task = rq_clock_task(cpu_rq(cpu));
 }
 
 /* conditionally throttle active cfs_rq's from put_prev_entity() */
-- 
1.8.3.1