sched: Unify the ->cpus_allowed mask copy

Currently every sched_class::set_cpus_allowed() implementation has to
copy the cpumask into task_struct::cpus_allowed, this is pointless,
put this copy in the generic code.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/n/tip-jhl5s9fckd9ptw1fzbqqlrd3@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 3 insertions, 7 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index 45174ca5c8ea..ce9a9e7db116 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6161,10 +6161,9 @@ void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask)
 {
         if (p->sched_class && p->sched_class->set_cpus_allowed)
                 p->sched_class->set_cpus_allowed(p, new_mask);
-        else {
-                cpumask_copy(&p->cpus_allowed, new_mask);
-                p->rt.nr_cpus_allowed = cpumask_weight(new_mask);
-        }
+
+        cpumask_copy(&p->cpus_allowed, new_mask);
+        p->rt.nr_cpus_allowed = cpumask_weight(new_mask);
 }
 
 /*
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 57a10842afa1..3023fd1ef364 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1608,9 +1608,6 @@ static void set_cpus_allowed_rt(struct task_struct *p,
 
                 update_rt_migration(&rq->rt);
         }
-
-        cpumask_copy(&p->cpus_allowed, new_mask);
-        p->rt.nr_cpus_allowed = weight;
 }
 
 /* Assumes rq->lock is held */