sched: Don't update shares twice on on_rq parent

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In dequeue_task_fair() we bail on dequeue when we encounter a parenting entity
with additional weight.  However, we perform a double shares update on this
entity as we continue the shares update traversal from this point, despite
dequeue_entity() having already updated its queuing cfs_rq.
Avoid this by starting from the parent when we resume.

Signed-off-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110707053059.797714697@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Paul Turner 2011-07-06 22:30:37 -07:00 • committed by Ingo Molnar

parent 9bbd737436

commit 9598c82dca

1 changed files with 3 additions and 0 deletions

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kernel/sched_fair.c

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