tree 9f8024d6566bc391fcb2aced8427db81ca4e9078
parent fce2097983d914ea8c2338efc6f6e9bb737f6ae4
author Mike Galbraith <efault@gmx.de> 1294202477 +0100
committer Ingo Molnar <mingo@elte.hu> 1295359784 +0100

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>