15 static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun);
21 	struct rt_bandwidth *rt_b =  in sched_rt_period_timer()  local
26 	raw_spin_lock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
28 		overrun = hrtimer_forward_now(timer, rt_b->rt_period);  in sched_rt_period_timer()
32 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
33 		idle = do_sched_rt_period_timer(rt_b, overrun);  in sched_rt_period_timer()
34 		raw_spin_lock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
37 		rt_b->rt_period_active = 0;  in sched_rt_period_timer()
38 	raw_spin_unlock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
43 void init_rt_bandwidth(struct rt_bandwidth *rt_b, u64 period, u64 runtime)  in init_rt_bandwidth()  argument
45 	rt_b->rt_period = ns_to_ktime(period);  in init_rt_bandwidth()
46 	rt_b->rt_runtime = runtime;  in init_rt_bandwidth()
48 	raw_spin_lock_init(&rt_b->rt_runtime_lock);  in init_rt_bandwidth()
50 	hrtimer_init(&rt_b->rt_period_timer, CLOCK_MONOTONIC,  in init_rt_bandwidth()
52 	rt_b->rt_period_timer.function = sched_rt_period_timer;  in init_rt_bandwidth()
55 static void start_rt_bandwidth(struct rt_bandwidth *rt_b)  in start_rt_bandwidth()  argument
57 	if (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF)  in start_rt_bandwidth()
60 	raw_spin_lock(&rt_b->rt_runtime_lock);  in start_rt_bandwidth()
61 	if (!rt_b->rt_period_active) {  in start_rt_bandwidth()
62 		rt_b->rt_period_active = 1;  in start_rt_bandwidth()
71 		hrtimer_forward_now(&rt_b->rt_period_timer, ns_to_ktime(0));  in start_rt_bandwidth()
72 		hrtimer_start_expires(&rt_b->rt_period_timer,  in start_rt_bandwidth()
75 	raw_spin_unlock(&rt_b->rt_runtime_lock);  in start_rt_bandwidth()
108 static void destroy_rt_bandwidth(struct rt_bandwidth *rt_b)  in destroy_rt_bandwidth()  argument
110 	hrtimer_cancel(&rt_b->rt_period_timer);  in destroy_rt_bandwidth()
594 struct rt_rq *sched_rt_period_rt_rq(struct rt_bandwidth *rt_b, int cpu)  in sched_rt_period_rt_rq()  argument
596 	return container_of(rt_b, struct task_group, rt_bandwidth)->rt_rq[cpu];  in sched_rt_period_rt_rq()
656 struct rt_rq *sched_rt_period_rt_rq(struct rt_bandwidth *rt_b, int cpu)  in sched_rt_period_rt_rq()  argument
670 	struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in sched_rt_bandwidth_account()  local
672 	return (hrtimer_active(&rt_b->rt_period_timer) ||  in sched_rt_bandwidth_account()
673 		rt_rq->rt_time < rt_b->rt_runtime);  in sched_rt_bandwidth_account()
682 	struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in do_balance_runtime()  local
689 	raw_spin_lock(&rt_b->rt_runtime_lock);  in do_balance_runtime()
690 	rt_period = ktime_to_ns(rt_b->rt_period);  in do_balance_runtime()
692 		struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i);  in do_balance_runtime()
726 	raw_spin_unlock(&rt_b->rt_runtime_lock);  in do_balance_runtime()
742 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in __disable_runtime()  local
746 		raw_spin_lock(&rt_b->rt_runtime_lock);  in __disable_runtime()
754 				rt_rq->rt_runtime == rt_b->rt_runtime)  in __disable_runtime()
763 		want = rt_b->rt_runtime - rt_rq->rt_runtime;  in __disable_runtime()
769 			struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i);  in __disable_runtime()
807 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in __disable_runtime()
826 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in __enable_runtime()  local
828 		raw_spin_lock(&rt_b->rt_runtime_lock);  in __enable_runtime()
830 		rt_rq->rt_runtime = rt_b->rt_runtime;  in __enable_runtime()
834 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in __enable_runtime()
853 static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)  in do_sched_rt_period_timer()  argument
869 	if (rt_b == &root_task_group.rt_bandwidth)  in do_sched_rt_period_timer()
874 		struct rt_rq *rt_rq = sched_rt_period_rt_rq(rt_b, i);  in do_sched_rt_period_timer()
884 			rt_rq->rt_runtime = rt_b->rt_runtime;  in do_sched_rt_period_timer()
931 	if (!throttled && (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF))  in do_sched_rt_period_timer()
965 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in sched_rt_runtime_exceeded()  local
971 		if (likely(rt_b->rt_runtime)) {  in sched_rt_runtime_exceeded()