From: Peter Zijlstra <peterz@infradead.org>
Date: Wed, 14 Aug 2013 12:55:46 +0000 (+0200)
Subject: sched: Create more preempt_count accessors
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~40^2~114
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01028747559ac6c6f642a7bbd2875cc4f66b2feb;p=pandora-kernel.git

sched: Create more preempt_count accessors

We need a few special preempt_count accessors:
 - task_preempt_count() for when we're interested in the preemption
   count of another (non-running) task.
 - init_task_preempt_count() for properly initializing the preemption
   count.
 - init_idle_preempt_count() a special case of the above for the idle
   threads.

With these no generic code ever touches thread_info::preempt_count
anymore and architectures could choose to remove it.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-jf5swrio8l78j37d06fzmo4r@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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