From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Thu, 25 Mar 2010 20:05:16 +0000 (+0100)
Subject: sched: Optimize task_rq_lock()
X-Git-Tag: v2.6.35-rc1~521^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65cc8e4859ff29a9ddc989c88557d6059834c2a2;p=pandora-kernel.git

sched: Optimize task_rq_lock()

Now that we hold the rq->lock over set_task_cpu() again, we can do
away with most of the TASK_WAKING checks and reduce them again to
set_cpus_allowed_ptr().

Removes some conditionals from scheduling hot-paths.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Oleg Nesterov <oleg@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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