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-rw-r--r--kernel/sched/cpufreq_schedutil.c6
-rw-r--r--kernel/sched/syscalls.c7
2 files changed, 12 insertions, 1 deletions
diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index a2a29e3fffca..1a19d69b91ed 100644
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -666,7 +666,11 @@ static int sugov_kthread_create(struct sugov_policy *sg_policy)
}
sg_policy->thread = thread;
- kthread_bind_mask(thread, policy->related_cpus);
+ if (policy->dvfs_possible_from_any_cpu)
+ set_cpus_allowed_ptr(thread, policy->related_cpus);
+ else
+ kthread_bind_mask(thread, policy->related_cpus);
+
init_irq_work(&sg_policy->irq_work, sugov_irq_work);
mutex_init(&sg_policy->work_lock);
diff --git a/kernel/sched/syscalls.c b/kernel/sched/syscalls.c
index 149e2c8036d3..456d339be98f 100644
--- a/kernel/sched/syscalls.c
+++ b/kernel/sched/syscalls.c
@@ -1130,6 +1130,13 @@ int dl_task_check_affinity(struct task_struct *p, const struct cpumask *mask)
return 0;
/*
+ * The special/sugov task isn't part of regular bandwidth/admission
+ * control so let userspace change affinities.
+ */
+ if (dl_entity_is_special(&p->dl))
+ return 0;
+
+ /*
* Since bandwidth control happens on root_domain basis,
* if admission test is enabled, we only admit -deadline
* tasks allowed to run on all the CPUs in the task's