From: Mike Galbraith <efault@gmx.de>
Date: Wed, 5 Jan 2011 04:41:17 +0000 (+0100)
Subject: sched: Fix signed unsigned comparison in check_preempt_tick()
X-Git-Tag: v2.6.38-rc2~21^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d7d8294415f0ce4254827d4a2a5ee88b00be52a8;p=pandora-kernel.git

sched: Fix signed unsigned comparison in check_preempt_tick()

Signed unsigned comparison may lead to superfluous resched if leftmost
is right of the current task, wasting a few cycles, and inadvertently
_lengthening_ the current task's slice.

Reported-by: Venkatesh Pallipadi <venki@google.com>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1294202477.9384.5.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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