11 static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun);
72 	struct rt_bandwidth *rt_b =  in sched_rt_period_timer()  local
77 	raw_spin_lock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
79 		overrun = hrtimer_forward_now(timer, rt_b->rt_period);  in sched_rt_period_timer()
83 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
84 		idle = do_sched_rt_period_timer(rt_b, overrun);  in sched_rt_period_timer()
85 		raw_spin_lock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
88 		rt_b->rt_period_active = 0;  in sched_rt_period_timer()
89 	raw_spin_unlock(&rt_b->rt_runtime_lock);  in sched_rt_period_timer()
94 void init_rt_bandwidth(struct rt_bandwidth *rt_b, u64 period, u64 runtime)  in init_rt_bandwidth()  argument
96 	rt_b->rt_period = ns_to_ktime(period);  in init_rt_bandwidth()
97 	rt_b->rt_runtime = runtime;  in init_rt_bandwidth()
99 	raw_spin_lock_init(&rt_b->rt_runtime_lock);  in init_rt_bandwidth()
101 	hrtimer_init(&rt_b->rt_period_timer, CLOCK_MONOTONIC,  in init_rt_bandwidth()
103 	rt_b->rt_period_timer.function = sched_rt_period_timer;  in init_rt_bandwidth()
106 static inline void do_start_rt_bandwidth(struct rt_bandwidth *rt_b)  in do_start_rt_bandwidth()  argument
108 	raw_spin_lock(&rt_b->rt_runtime_lock);  in do_start_rt_bandwidth()
109 	if (!rt_b->rt_period_active) {  in do_start_rt_bandwidth()
110 		rt_b->rt_period_active = 1;  in do_start_rt_bandwidth()
119 		hrtimer_forward_now(&rt_b->rt_period_timer, ns_to_ktime(0));  in do_start_rt_bandwidth()
120 		hrtimer_start_expires(&rt_b->rt_period_timer,  in do_start_rt_bandwidth()
123 	raw_spin_unlock(&rt_b->rt_runtime_lock);  in do_start_rt_bandwidth()
126 static void start_rt_bandwidth(struct rt_bandwidth *rt_b)  in start_rt_bandwidth()  argument
128 	if (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF)  in start_rt_bandwidth()
131 	do_start_rt_bandwidth(rt_b);  in start_rt_bandwidth()
164 static void destroy_rt_bandwidth(struct rt_bandwidth *rt_b)  in destroy_rt_bandwidth()  argument
166 	hrtimer_cancel(&rt_b->rt_period_timer);  in destroy_rt_bandwidth()
646 struct rt_rq *sched_rt_period_rt_rq(struct rt_bandwidth *rt_b, int cpu)  in sched_rt_period_rt_rq()  argument
648 	return container_of(rt_b, struct task_group, rt_bandwidth)->rt_rq[cpu];  in sched_rt_period_rt_rq()
708 struct rt_rq *sched_rt_period_rt_rq(struct rt_bandwidth *rt_b, int cpu)  in sched_rt_period_rt_rq()  argument
722 	struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in sched_rt_bandwidth_account()  local
724 	return (hrtimer_active(&rt_b->rt_period_timer) ||  in sched_rt_bandwidth_account()
725 		rt_rq->rt_time < rt_b->rt_runtime);  in sched_rt_bandwidth_account()
734 	struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in do_balance_runtime()  local
741 	raw_spin_lock(&rt_b->rt_runtime_lock);  in do_balance_runtime()
742 	rt_period = ktime_to_ns(rt_b->rt_period);  in do_balance_runtime()
744 		struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i);  in do_balance_runtime()
778 	raw_spin_unlock(&rt_b->rt_runtime_lock);  in do_balance_runtime()
794 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in __disable_runtime()  local
798 		raw_spin_lock(&rt_b->rt_runtime_lock);  in __disable_runtime()
806 				rt_rq->rt_runtime == rt_b->rt_runtime)  in __disable_runtime()
815 		want = rt_b->rt_runtime - rt_rq->rt_runtime;  in __disable_runtime()
821 			struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i);  in __disable_runtime()
859 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in __disable_runtime()
878 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in __enable_runtime()  local
880 		raw_spin_lock(&rt_b->rt_runtime_lock);  in __enable_runtime()
882 		rt_rq->rt_runtime = rt_b->rt_runtime;  in __enable_runtime()
886 		raw_spin_unlock(&rt_b->rt_runtime_lock);  in __enable_runtime()
905 static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)  in do_sched_rt_period_timer()  argument
921 	if (rt_b == &root_task_group.rt_bandwidth)  in do_sched_rt_period_timer()
926 		struct rt_rq *rt_rq = sched_rt_period_rt_rq(rt_b, i);  in do_sched_rt_period_timer()
937 			rt_rq->rt_runtime = rt_b->rt_runtime;  in do_sched_rt_period_timer()
984 	if (!throttled && (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF))  in do_sched_rt_period_timer()
1018 		struct rt_bandwidth *rt_b = sched_rt_bandwidth(rt_rq);  in sched_rt_runtime_exceeded()  local
1024 		if (likely(rt_b->rt_runtime)) {  in sched_rt_runtime_exceeded()