linux-kernel - [tip:sched/core] sched/fair: Fix task group initialization

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Date:   Wed, 16 Nov 2016 04:17:47 -0800
From:   tip-bot for Vincent Guittot <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, vincent.guittot@...aro.org,
        torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
        dietmar.eggemann@....com, hpa@...or.com, peterz@...radead.org,
        mingo@...nel.org
Subject: [tip:sched/core] sched/fair: Fix task group initialization

Commit-ID:  d03266910a533d874c01ef2ca8dc73009f2925fa
Gitweb:     http://git.kernel.org/tip/d03266910a533d874c01ef2ca8dc73009f2925fa
Author:     Vincent Guittot <vincent.guittot@...aro.org>
AuthorDate: Tue, 8 Nov 2016 10:53:47 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 16 Nov 2016 10:29:11 +0100

sched/fair: Fix task group initialization

The moves of tasks are now propagated down to root and the utilization
of cfs_rq reflects reality so it doesn't need to be estimated at init.

Signed-off-by: Vincent Guittot <vincent.guittot@...aro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Acked-by: Dietmar Eggemann <dietmar.eggemann@....com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Morten.Rasmussen@....com
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: bsegall@...gle.com
Cc: kernellwp@...il.com
Cc: pjt@...gle.com
Cc: yuyang.du@...el.com
Link: http://lkml.kernel.org/r/1478598827-32372-7-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 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 090a9bb..02605f2 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -9198,7 +9198,7 @@ void online_fair_sched_group(struct task_group *tg)
 		se = tg->se[i];
 
 		raw_spin_lock_irq(&rq->lock);
-		post_init_entity_util_avg(se);
+		attach_entity_cfs_rq(se);
 		sync_throttle(tg, i);
 		raw_spin_unlock_irq(&rq->lock);
 	}