Commit 1746babb authored Aug 20, 2015 by Byungchul Park Committed by Ingo Molnar Sep 13, 2015

sched/fair: Have task_move_group_fair() also detach entity load from the old runqueue



Since we attach the entity load to the new runqueue, we should also
detatch the entity load from the old runqueue, otherwise load can
accumulate.

Signed-off-by: Byungchul Park <byungchul.park@lge.com>
[ Rewrote the changelog. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: yuyang.du@intel.com
Link: http://lkml.kernel.org/r/1440069720-27038-4-git-send-email-byungchul.park@lge.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 50a2a3b2

kernel/sched/fair.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -8037,8 +8037,12 @@ static void task_move_group_fair(struct task_struct *p, int queued)
		if (!queued && (!se->sum_exec_runtime \|\| p->state == TASK_WAKING))
		queued = 1;

		cfs_rq = cfs_rq_of(se);
		if (!queued)
		se->vruntime -= cfs_rq_of(se)->min_vruntime;
		se->vruntime -= cfs_rq->min_vruntime;

		/* Synchronize task with its prev cfs_rq */
		detach_entity_load_avg(cfs_rq, se);
		set_task_rq(p, task_cpu(p));
		se->depth = se->parent ? se->parent->depth + 1 : 0;
		cfs_rq = cfs_rq_of(se);