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-rw-r--r--kernel/sched/core.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 2e3b983..740f90b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1151,17 +1151,22 @@ static int migration_cpu_stop(void *data)
return 0;
}
-void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask)
+/*
+ * sched_class::set_cpus_allowed must do the below, but is not required to
+ * actually call this function.
+ */
+void set_cpus_allowed_common(struct task_struct *p, const struct cpumask *new_mask)
{
- lockdep_assert_held(&p->pi_lock);
-
- if (p->sched_class->set_cpus_allowed)
- p->sched_class->set_cpus_allowed(p, new_mask);
-
cpumask_copy(&p->cpus_allowed, new_mask);
p->nr_cpus_allowed = cpumask_weight(new_mask);
}
+void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask)
+{
+ lockdep_assert_held(&p->pi_lock);
+ p->sched_class->set_cpus_allowed(p, new_mask);
+}
+
/*
* Change a given task's CPU affinity. Migrate the thread to a
* proper CPU and schedule it away if the CPU it's executing on