tree 3672a4ca3409cae40d5c7338ad9bfa590045dcbc
parent a787870924dbd6f321661e06d4ec1c7a408c9ccf
author Peter Zijlstra <peterz@infradead.org> 1376484946 +0200
committer Ingo Molnar <mingo@kernel.org> 1380110872 +0200

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>