13 static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun);
19 	struct rt_bandwidth *rt_b =  in sched_rt_period_timer()  local
24 	raw_spin_lock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
26 		overrun = hrtimer_forward_now(timer, rt_b->rt_period);  in sched_rt_period_timer()
30 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
31 		idle = do_sched_rt_period_timer(rt_b, overrun);  in sched_rt_period_timer()
32 		raw_spin_lock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
35 		rt_b->rt_period_active = 0;  in sched_rt_period_timer()
36 	raw_spin_unlock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
41 void init_rt_bandwidth(struct rt_bandwidth *rt_b, u64 period, u64 runtime)  in init_rt_bandwidth()  argument
43 	rt_b->rt_period = ns_to_ktime(period);  in init_rt_bandwidth()
44 	rt_b->rt_runtime = runtime;  in init_rt_bandwidth()
46 	raw_spin_lock_init(&rt_b->rt_runtime_lock);  in init_rt_bandwidth()
48 	hrtimer_init(&rt_b->rt_period_timer,  in init_rt_bandwidth()
50 	rt_b->rt_period_timer.function = sched_rt_period_timer;  in init_rt_bandwidth()
53 static void start_rt_bandwidth(struct rt_bandwidth *rt_b)  in start_rt_bandwidth()  argument
55 	if (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF)  in start_rt_bandwidth()
58 	raw_spin_lock(&rt_b->rt_runtime_lock);  in start_rt_bandwidth()
59 	if (!rt_b->rt_period_active) {  in start_rt_bandwidth()
60 		rt_b->rt_period_active = 1;  in start_rt_bandwidth()
61 		hrtimer_forward_now(&rt_b->rt_period_timer, rt_b->rt_period);  in start_rt_bandwidth()
62 		hrtimer_start_expires(&rt_b->rt_period_timer, HRTIMER_MODE_ABS_PINNED);  in start_rt_bandwidth()
64 	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()
552 struct rt_rq *sched_rt_period_rt_rq(struct rt_bandwidth *rt_b, int cpu)  in sched_rt_period_rt_rq()  argument
554 	return container_of(rt_b, struct task_group, rt_bandwidth)->rt_rq[cpu];  in sched_rt_period_rt_rq()
614 struct rt_rq *sched_rt_period_rt_rq(struct rt_bandwidth *rt_b, int cpu)  in sched_rt_period_rt_rq()  argument
628 	struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in sched_rt_bandwidth_account()  local
630 	return (hrtimer_active(&rt_b->rt_period_timer) ||  in sched_rt_bandwidth_account()
631 		rt_rq->rt_time < rt_b->rt_runtime);  in sched_rt_bandwidth_account()
640 	struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in do_balance_runtime()  local
647 	raw_spin_lock(&rt_b->rt_runtime_lock);  in do_balance_runtime()
648 	rt_period = ktime_to_ns(rt_b->rt_period);  in do_balance_runtime()
650 		struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i);  in do_balance_runtime()
684 	raw_spin_unlock(&rt_b->rt_runtime_lock);  in do_balance_runtime()
700 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in __disable_runtime()  local
704 		raw_spin_lock(&rt_b->rt_runtime_lock);  in __disable_runtime()
712 				rt_rq->rt_runtime == rt_b->rt_runtime)  in __disable_runtime()
721 		want = rt_b->rt_runtime - rt_rq->rt_runtime;  in __disable_runtime()
727 			struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i);  in __disable_runtime()
765 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in __disable_runtime()
784 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in __enable_runtime()  local
786 		raw_spin_lock(&rt_b->rt_runtime_lock);  in __enable_runtime()
788 		rt_rq->rt_runtime = rt_b->rt_runtime;  in __enable_runtime()
792 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in __enable_runtime()
811 static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)  in do_sched_rt_period_timer()  argument
827 	if (rt_b == &root_task_group.rt_bandwidth)  in do_sched_rt_period_timer()
832 		struct rt_rq *rt_rq = sched_rt_period_rt_rq(rt_b, i);  in do_sched_rt_period_timer()
874 	if (!throttled && (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF))  in do_sched_rt_period_timer()
908 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in sched_rt_runtime_exceeded()  local
914 		if (likely(rt_b->rt_runtime)) {  in sched_rt_runtime_exceeded()