From: Ben Segall <bsegall@google.com>
Date: Wed, 16 Oct 2013 18:16:17 +0000 (-0700)
Subject: sched: Fix cfs_bandwidth misuse of hrtimer_expires_remaining
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~40^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=db06e78cc13d70f10877e0557becc88ab3ad2be8;p=pandora-kernel.git

sched: Fix cfs_bandwidth misuse of hrtimer_expires_remaining

hrtimer_expires_remaining does not take internal hrtimer locks and thus
must be guarded against concurrent __hrtimer_start_range_ns (but
returning HRTIMER_RESTART is safe). Use cfs_b->lock to make it safe.

Signed-off-by: Ben Segall <bsegall@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: pjt@google.com
Link: http://lkml.kernel.org/r/20131016181617.22647.73829.stgit@sword-of-the-dawn.mtv.corp.google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

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