From: Peter Zijlstra <peterz@infradead.org>
Date: Thu, 27 Feb 2014 09:40:35 +0000 (+0100)
Subject: sched: Make scale_rt_power() deal with backward clocks
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~33^2~67
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cadefd3d6cc914d95163ba1eda766bfe7ce1e5b7;p=pandora-kernel.git

sched: Make scale_rt_power() deal with backward clocks

Mike reported that, while unlikely, its entirely possible for
scale_rt_power() to see the time go backwards. This yields rather
'interesting' results.

So like all other sites that deal with clocks; make this one ignore
backward clock movement too.

Reported-by: Mike Galbraith <bitbucket@online.de>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140227094035.GZ9987@twins.programming.kicks-ass.net
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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