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sched: Wrap scheduler p->cpus_allowed access

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This task is preparatory for the migrate_disable() implementation, but
stands on its own and provides a cleanup.

It currently only converts those sites required for task-placement.
Kosaki-san once mentioned replacing cpus_allowed with a proper
cpumask_t instead of the NR_CPUS sized array it currently is, that
would also require something like this.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Link: http://lkml.kernel.org/n/tip-e42skvaddos99psip0vce41o@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2011-06-16 12:23:22 +02:00
committed by Ingo Molnar
parent 6eb57e0d65
commit fa17b507f1
4 changed files with 13 additions and 13 deletions
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2
lib/smp_processor_id.c
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@@ -22,7 +22,7 @@ notrace unsigned int debug_smp_processor_id(void)
* Kernel threads bound to a single CPU can safely use
* smp_processor_id():
*/
if (cpumask_equal(&current->cpus_allowed, cpumask_of(this_cpu)))
if (cpumask_equal(tsk_cpus_allowed(current), cpumask_of(this_cpu)))
goto out;
/*