From: Paul Turner <pjt@google.com>
Date: Thu, 7 Jul 2011 05:30:37 +0000 (-0700)
Subject: sched: Don't update shares twice on on_rq parent
X-Git-Tag: v3.1-rc1~298^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9598c82dcacadc3b9daa8170613fd054c6124d30;p=pandora-kernel.git

sched: Don't update shares twice on on_rq parent

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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