From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Thu, 11 Apr 2013 23:51:00 +0000 (+0200)
Subject: sched: Update rq clock before calling check_preempt_curr()
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~61^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1ad4ec0dc740c4183acd6d6e367ca52b28e4fa94;p=pandora-kernel.git

sched: Update rq clock before calling check_preempt_curr()

check_preempt_curr() of fair class needs an uptodate sched clock
value to update runtime stats of the current task of the target's rq.

When a task is woken up, activate_task() is usually called right before
ttwu_do_wakeup() unless the task is still in the runqueue. In the latter
case we need to update the rq clock explicitly because activate_task()
isn't here to do the job for us.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Turner <pjt@google.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1365724262-20142-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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