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

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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>
This commit is contained in:
Byungchul Park 2015-08-20 20:21:58 +09:00 committed by Ingo Molnar
parent 50a2a3b246
commit 1746babbb1
1 changed files with 5 additions and 1 deletions
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6
kernel/sched/fair.c
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@ -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);