Messages in this thread Patch in this message | | | Date | Tue, 27 Sep 2011 08:40:24 -0400 | From | Steven Rostedt <> | Subject | [PATCH v2 2/3][RT] sched: Do not compare cpu masks in scheduler |
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From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Index: linux-rt.git/kernel/sched.c =================================================================== --- linux-rt.git.orig/kernel/sched.c +++ linux-rt.git/kernel/sched.c @@ -4235,16 +4235,12 @@ static inline void update_migrate_disabl */ mask = tsk_cpus_allowed(p); - WARN_ON(!cpumask_test_cpu(smp_processor_id(), mask)); + if (p->sched_class->set_cpus_allowed) + p->sched_class->set_cpus_allowed(p, mask); + p->rt.nr_cpus_allowed = cpumask_weight(mask); - if (!cpumask_equal(&p->cpus_allowed, mask)) { - if (p->sched_class->set_cpus_allowed) - p->sched_class->set_cpus_allowed(p, mask); - p->rt.nr_cpus_allowed = cpumask_weight(mask); - - /* Let migrate_enable know to fix things back up */ - p->migrate_disable |= MIGRATE_DISABLE_SET_AFFIN; - } + /* Let migrate_enable know to fix things back up */ + p->migrate_disable |= MIGRATE_DISABLE_SET_AFFIN; } void migrate_disable(void)
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