commit fa17b507f142d37aeac322a95f6f7c6375f25601
author Peter Zijlstra <peterz@infradead.org> Thu Jun 16 12:23:22 2011 +0200
committer Ingo Molnar <mingo@elte.hu> Thu Oct 06 12:46:56 2011 +0200
tree 5ff8b9d7087175aca85dff3393932fe9b5497425
parent 6eb57e0d65ebd99a71d435dc96d83e725752eef8

sched: Wrap scheduler p->cpus_allowed access

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>

lib/smp_processor_id.c

diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c
index 4689cb0..503f087 100644
--- a/lib/smp_processor_id.c
+++ b/lib/smp_processor_id.c
@@ -22,7 +22,7 @@
 	 * 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;
 
 	/*