121 static inline struct rq *rq_of_rt_rq(struct rt_rq *rt_rq)  in rq_of_rt_rq()
123 	return rt_rq->rq;  in rq_of_rt_rq()
131 static inline struct rq *rq_of_rt_se(struct sched_rt_entity *rt_se)  in rq_of_rt_se()
135 	return rt_rq->rq;  in rq_of_rt_se()
160 	struct rq *rq = cpu_rq(cpu);  in init_tg_rt_entry()  local
164 	rt_rq->rq = rq;  in init_tg_rt_entry()
174 		rt_se->rt_rq = &rq->rt;  in init_tg_rt_entry()
232 static inline struct rq *rq_of_rt_rq(struct rt_rq *rt_rq)  in rq_of_rt_rq()
234 	return container_of(rt_rq, struct rq, rt);  in rq_of_rt_rq()
237 static inline struct rq *rq_of_rt_se(struct sched_rt_entity *rt_se)  in rq_of_rt_se()
246 	struct rq *rq = rq_of_rt_se(rt_se);  in rt_rq_of_se()  local
248 	return &rq->rt;  in rt_rq_of_se()
261 static void pull_rt_task(struct rq *this_rq);
263 static inline bool need_pull_rt_task(struct rq *rq, struct task_struct *prev)  in need_pull_rt_task()  argument
266 	return rq->rt.highest_prio.curr > prev->prio;  in need_pull_rt_task()
269 static inline int rt_overloaded(struct rq *rq)  in rt_overloaded()  argument
271 	return atomic_read(&rq->rd->rto_count);  in rt_overloaded()
274 static inline void rt_set_overload(struct rq *rq)  in rt_set_overload()  argument
276 	if (!rq->online)  in rt_set_overload()
279 	cpumask_set_cpu(rq->cpu, rq->rd->rto_mask);  in rt_set_overload()
290 	atomic_inc(&rq->rd->rto_count);  in rt_set_overload()
293 static inline void rt_clear_overload(struct rq *rq)  in rt_clear_overload()  argument
295 	if (!rq->online)  in rt_clear_overload()
299 	atomic_dec(&rq->rd->rto_count);  in rt_clear_overload()
300 	cpumask_clear_cpu(rq->cpu, rq->rd->rto_mask);  in rt_clear_overload()
350 static inline int has_pushable_tasks(struct rq *rq)  in has_pushable_tasks()  argument
352 	return !plist_head_empty(&rq->rt.pushable_tasks);  in has_pushable_tasks()
358 static void push_rt_tasks(struct rq *);
359 static void pull_rt_task(struct rq *);
361 static inline void rt_queue_push_tasks(struct rq *rq)  in rt_queue_push_tasks()  argument
363 	if (!has_pushable_tasks(rq))  in rt_queue_push_tasks()
366 	queue_balance_callback(rq, &per_cpu(rt_push_head, rq->cpu), push_rt_tasks);  in rt_queue_push_tasks()
369 static inline void rt_queue_pull_task(struct rq *rq)  in rt_queue_pull_task()  argument
371 	queue_balance_callback(rq, &per_cpu(rt_pull_head, rq->cpu), pull_rt_task);  in rt_queue_pull_task()
374 static void enqueue_pushable_task(struct rq *rq, struct task_struct *p)  in enqueue_pushable_task()  argument
376 	plist_del(&p->pushable_tasks, &rq->rt.pushable_tasks);  in enqueue_pushable_task()
378 	plist_add(&p->pushable_tasks, &rq->rt.pushable_tasks);  in enqueue_pushable_task()
381 	if (p->prio < rq->rt.highest_prio.next)  in enqueue_pushable_task()
382 		rq->rt.highest_prio.next = p->prio;  in enqueue_pushable_task()
385 static void dequeue_pushable_task(struct rq *rq, struct task_struct *p)  in dequeue_pushable_task()  argument
387 	plist_del(&p->pushable_tasks, &rq->rt.pushable_tasks);  in dequeue_pushable_task()
390 	if (has_pushable_tasks(rq)) {  in dequeue_pushable_task()
391 		p = plist_first_entry(&rq->rt.pushable_tasks,  in dequeue_pushable_task()
393 		rq->rt.highest_prio.next = p->prio;  in dequeue_pushable_task()
395 		rq->rt.highest_prio.next = MAX_RT_PRIO;  in dequeue_pushable_task()
400 static inline void enqueue_pushable_task(struct rq *rq, struct task_struct *p)  in enqueue_pushable_task()  argument
404 static inline void dequeue_pushable_task(struct rq *rq, struct task_struct *p)  in dequeue_pushable_task()  argument
418 static inline bool need_pull_rt_task(struct rq *rq, struct task_struct *prev)  in need_pull_rt_task()  argument
423 static inline void pull_rt_task(struct rq *this_rq)  in pull_rt_task()
427 static inline void rt_queue_push_tasks(struct rq *rq)  in rt_queue_push_tasks()  argument
470 #define for_each_rt_rq(rt_rq, iter, rq)					\  argument
473 		(rt_rq = iter->rt_rq[cpu_of(rq)]);)
489 	struct rq *rq = rq_of_rt_rq(rt_rq);  in sched_rt_rq_enqueue()  local
492 	int cpu = cpu_of(rq);  in sched_rt_rq_enqueue()
503 			resched_curr(rq);  in sched_rt_rq_enqueue()
577 #define for_each_rt_rq(rt_rq, iter, rq) \  argument
578 	for ((void) iter, rt_rq = &rq->rt; rt_rq; rt_rq = NULL)
590 	struct rq *rq = rq_of_rt_rq(rt_rq);  in sched_rt_rq_enqueue()  local
596 	resched_curr(rq);  in sched_rt_rq_enqueue()
691 static void __disable_runtime(struct rq *rq)  in __disable_runtime()  argument
693 	struct root_domain *rd = rq->rd;  in __disable_runtime()
700 	for_each_rt_rq(rt_rq, iter, rq) {  in __disable_runtime()
773 static void __enable_runtime(struct rq *rq)  in __enable_runtime()  argument
784 	for_each_rt_rq(rt_rq, iter, rq) {  in __enable_runtime()
834 		struct rq *rq = rq_of_rt_rq(rt_rq);  in do_sched_rt_period_timer()  local
849 		raw_spin_lock(&rq->lock);  in do_sched_rt_period_timer()
850 		update_rq_clock(rq);  in do_sched_rt_period_timer()
871 				if (rt_rq->rt_nr_running && rq->curr == rq->idle)  in do_sched_rt_period_timer()
872 					rq_clock_cancel_skipupdate(rq);  in do_sched_rt_period_timer()
887 		raw_spin_unlock(&rq->lock);  in do_sched_rt_period_timer()
955 static void update_curr_rt(struct rq *rq)  in update_curr_rt()  argument
957 	struct task_struct *curr = rq->curr;  in update_curr_rt()
965 	now = rq_clock_task(rq);  in update_curr_rt()
989 				resched_curr(rq);  in update_curr_rt()
998 	struct rq *rq = rq_of_rt_rq(rt_rq);  in dequeue_top_rt_rq()  local
1000 	BUG_ON(&rq->rt != rt_rq);  in dequeue_top_rt_rq()
1005 	BUG_ON(!rq->nr_running);  in dequeue_top_rt_rq()
1007 	sub_nr_running(rq, rt_rq->rt_nr_running);  in dequeue_top_rt_rq()
1015 	struct rq *rq = rq_of_rt_rq(rt_rq);  in enqueue_top_rt_rq()  local
1017 	BUG_ON(&rq->rt != rt_rq);  in enqueue_top_rt_rq()
1026 		add_nr_running(rq, rt_rq->rt_nr_running);  in enqueue_top_rt_rq()
1031 	cpufreq_update_util(rq, 0);  in enqueue_top_rt_rq()
1039 	struct rq *rq = rq_of_rt_rq(rt_rq);  in inc_rt_prio_smp()  local
1045 	if (&rq->rt != rt_rq)  in inc_rt_prio_smp()
1048 	if (rq->online && prio < prev_prio)  in inc_rt_prio_smp()
1049 		cpupri_set(&rq->rd->cpupri, rq->cpu, prio);  in inc_rt_prio_smp()
1055 	struct rq *rq = rq_of_rt_rq(rt_rq);  in dec_rt_prio_smp()  local
1061 	if (&rq->rt != rt_rq)  in dec_rt_prio_smp()
1064 	if (rq->online && rt_rq->highest_prio.curr != prev_prio)  in dec_rt_prio_smp()
1065 		cpupri_set(&rq->rd->cpupri, rq->cpu, rt_rq->highest_prio.curr);  in dec_rt_prio_smp()
1302 	struct rq *rq = rq_of_rt_se(rt_se);  in enqueue_rt_entity()  local
1307 	enqueue_top_rt_rq(&rq->rt);  in enqueue_rt_entity()
1312 	struct rq *rq = rq_of_rt_se(rt_se);  in dequeue_rt_entity()  local
1322 	enqueue_top_rt_rq(&rq->rt);  in dequeue_rt_entity()
1329 enqueue_task_rt(struct rq *rq, struct task_struct *p, int flags)  in enqueue_task_rt()  argument
1338 	if (!task_current(rq, p) && p->nr_cpus_allowed > 1)  in enqueue_task_rt()
1339 		enqueue_pushable_task(rq, p);  in enqueue_task_rt()
1342 static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int flags)  in dequeue_task_rt()  argument
1346 	update_curr_rt(rq);  in dequeue_task_rt()
1349 	dequeue_pushable_task(rq, p);  in dequeue_task_rt()
1370 static void requeue_task_rt(struct rq *rq, struct task_struct *p, int head)  in requeue_task_rt()  argument
1381 static void yield_task_rt(struct rq *rq)  in yield_task_rt()  argument
1383 	requeue_task_rt(rq, rq->curr, 0);  in yield_task_rt()
1393 	struct rq *rq;  in select_task_rq_rt()  local
1399 	rq = cpu_rq(cpu);  in select_task_rq_rt()
1402 	curr = READ_ONCE(rq->curr); /* unlocked access */  in select_task_rq_rt()
1445 static void check_preempt_equal_prio(struct rq *rq, struct task_struct *p)  in check_preempt_equal_prio()  argument
1451 	if (rq->curr->nr_cpus_allowed == 1 ||  in check_preempt_equal_prio()
1452 	    !cpupri_find(&rq->rd->cpupri, rq->curr, NULL))  in check_preempt_equal_prio()
1460 	    && cpupri_find(&rq->rd->cpupri, p, NULL))  in check_preempt_equal_prio()
1468 	requeue_task_rt(rq, p, 1);  in check_preempt_equal_prio()
1469 	resched_curr(rq);  in check_preempt_equal_prio()
1472 static int balance_rt(struct rq *rq, struct task_struct *p, struct rq_flags *rf)  in balance_rt()  argument
1474 	if (!on_rt_rq(&p->rt) && need_pull_rt_task(rq, p)) {  in balance_rt()
1481 		rq_unpin_lock(rq, rf);  in balance_rt()
1482 		pull_rt_task(rq);  in balance_rt()
1483 		rq_repin_lock(rq, rf);  in balance_rt()
1486 	return sched_stop_runnable(rq) || sched_dl_runnable(rq) || sched_rt_runnable(rq);  in balance_rt()
1493 static void check_preempt_curr_rt(struct rq *rq, struct task_struct *p, int flags)  in check_preempt_curr_rt()  argument
1495 	if (p->prio < rq->curr->prio) {  in check_preempt_curr_rt()
1496 		resched_curr(rq);  in check_preempt_curr_rt()
1513 	if (p->prio == rq->curr->prio && !test_tsk_need_resched(rq->curr))  in check_preempt_curr_rt()
1514 		check_preempt_equal_prio(rq, p);  in check_preempt_curr_rt()
1518 static inline void set_next_task_rt(struct rq *rq, struct task_struct *p)  in set_next_task_rt()  argument
1520 	p->se.exec_start = rq_clock_task(rq);  in set_next_task_rt()
1523 	dequeue_pushable_task(rq, p);  in set_next_task_rt()
1530 	if (rq->curr->sched_class != &rt_sched_class)  in set_next_task_rt()
1531 		update_rt_rq_load_avg(rq_clock_pelt(rq), rq, 0);  in set_next_task_rt()
1533 	rt_queue_push_tasks(rq);  in set_next_task_rt()
1536 static struct sched_rt_entity *pick_next_rt_entity(struct rq *rq,  in pick_next_rt_entity()  argument
1553 static struct task_struct *_pick_next_task_rt(struct rq *rq)  in _pick_next_task_rt()  argument
1556 	struct rt_rq *rt_rq  = &rq->rt;  in _pick_next_task_rt()
1559 		rt_se = pick_next_rt_entity(rq, rt_rq);  in _pick_next_task_rt()
1568 pick_next_task_rt(struct rq *rq, struct task_struct *prev, struct rq_flags *rf)  in pick_next_task_rt()  argument
1574 	if (!sched_rt_runnable(rq))  in pick_next_task_rt()
1577 	p = _pick_next_task_rt(rq);  in pick_next_task_rt()
1578 	set_next_task_rt(rq, p);  in pick_next_task_rt()
1582 static void put_prev_task_rt(struct rq *rq, struct task_struct *p)  in put_prev_task_rt()  argument
1584 	update_curr_rt(rq);  in put_prev_task_rt()
1586 	update_rt_rq_load_avg(rq_clock_pelt(rq), rq, 1);  in put_prev_task_rt()
1593 		enqueue_pushable_task(rq, p);  in put_prev_task_rt()
1601 static int pick_rt_task(struct rq *rq, struct task_struct *p, int cpu)  in pick_rt_task()  argument
1603 	if (!task_running(rq, p) &&  in pick_rt_task()
1614 static struct task_struct *pick_highest_pushable_task(struct rq *rq, int cpu)  in pick_highest_pushable_task()  argument
1616 	struct plist_head *head = &rq->rt.pushable_tasks;  in pick_highest_pushable_task()
1619 	if (!has_pushable_tasks(rq))  in pick_highest_pushable_task()
1623 		if (pick_rt_task(rq, p, cpu))  in pick_highest_pushable_task()
1708 static struct rq *find_lock_lowest_rq(struct task_struct *task, struct rq *rq)  in find_lock_lowest_rq()  argument
1710 	struct rq *lowest_rq = NULL;  in find_lock_lowest_rq()
1717 		if ((cpu == -1) || (cpu == rq->cpu))  in find_lock_lowest_rq()
1733 		if (double_lock_balance(rq, lowest_rq)) {  in find_lock_lowest_rq()
1740 			if (unlikely(task_rq(task) != rq ||  in find_lock_lowest_rq()
1742 				     task_running(rq, task) ||  in find_lock_lowest_rq()
1746 				double_unlock_balance(rq, lowest_rq);  in find_lock_lowest_rq()
1757 		double_unlock_balance(rq, lowest_rq);  in find_lock_lowest_rq()
1764 static struct task_struct *pick_next_pushable_task(struct rq *rq)  in pick_next_pushable_task()  argument
1768 	if (!has_pushable_tasks(rq))  in pick_next_pushable_task()
1771 	p = plist_first_entry(&rq->rt.pushable_tasks,  in pick_next_pushable_task()
1774 	BUG_ON(rq->cpu != task_cpu(p));  in pick_next_pushable_task()
1775 	BUG_ON(task_current(rq, p));  in pick_next_pushable_task()
1789 static int push_rt_task(struct rq *rq)  in push_rt_task()  argument
1792 	struct rq *lowest_rq;  in push_rt_task()
1795 	if (!rq->rt.overloaded)  in push_rt_task()
1798 	next_task = pick_next_pushable_task(rq);  in push_rt_task()
1803 	if (WARN_ON(next_task == rq->curr))  in push_rt_task()
1811 	if (unlikely(next_task->prio < rq->curr->prio)) {  in push_rt_task()
1812 		resched_curr(rq);  in push_rt_task()
1820 	lowest_rq = find_lock_lowest_rq(next_task, rq);  in push_rt_task()
1831 		task = pick_next_pushable_task(rq);  in push_rt_task()
1854 	deactivate_task(rq, next_task, 0);  in push_rt_task()
1861 	double_unlock_balance(rq, lowest_rq);  in push_rt_task()
1869 static void push_rt_tasks(struct rq *rq)  in push_rt_tasks()  argument
1872 	while (push_rt_task(rq))  in push_rt_tasks()
1976 static void tell_cpu_to_push(struct rq *rq)  in tell_cpu_to_push()  argument
1981 	atomic_inc(&rq->rd->rto_loop_next);  in tell_cpu_to_push()
1984 	if (!rto_start_trylock(&rq->rd->rto_loop_start))  in tell_cpu_to_push()
1987 	raw_spin_lock(&rq->rd->rto_lock);  in tell_cpu_to_push()
1995 	if (rq->rd->rto_cpu < 0)  in tell_cpu_to_push()
1996 		cpu = rto_next_cpu(rq->rd);  in tell_cpu_to_push()
1998 	raw_spin_unlock(&rq->rd->rto_lock);  in tell_cpu_to_push()
2000 	rto_start_unlock(&rq->rd->rto_loop_start);  in tell_cpu_to_push()
2004 		sched_get_rd(rq->rd);  in tell_cpu_to_push()
2005 		irq_work_queue_on(&rq->rd->rto_push_work, cpu);  in tell_cpu_to_push()
2014 	struct rq *rq;  in rto_push_irq_work_func()  local
2017 	rq = this_rq();  in rto_push_irq_work_func()
2023 	if (has_pushable_tasks(rq)) {  in rto_push_irq_work_func()
2024 		raw_spin_lock(&rq->lock);  in rto_push_irq_work_func()
2025 		push_rt_tasks(rq);  in rto_push_irq_work_func()
2026 		raw_spin_unlock(&rq->lock);  in rto_push_irq_work_func()
2046 static void pull_rt_task(struct rq *this_rq)  in pull_rt_task()
2051 	struct rq *src_rq;  in pull_rt_task()
2148 static void task_woken_rt(struct rq *rq, struct task_struct *p)  in task_woken_rt()  argument
2150 	if (!task_running(rq, p) &&  in task_woken_rt()
2151 	    !test_tsk_need_resched(rq->curr) &&  in task_woken_rt()
2153 	    (dl_task(rq->curr) || rt_task(rq->curr)) &&  in task_woken_rt()
2154 	    (rq->curr->nr_cpus_allowed < 2 ||  in task_woken_rt()
2155 	     rq->curr->prio <= p->prio))  in task_woken_rt()
2156 		push_rt_tasks(rq);  in task_woken_rt()
2160 static void rq_online_rt(struct rq *rq)  in rq_online_rt()  argument
2162 	if (rq->rt.overloaded)  in rq_online_rt()
2163 		rt_set_overload(rq);  in rq_online_rt()
2165 	__enable_runtime(rq);  in rq_online_rt()
2167 	cpupri_set(&rq->rd->cpupri, rq->cpu, rq->rt.highest_prio.curr);  in rq_online_rt()
2171 static void rq_offline_rt(struct rq *rq)  in rq_offline_rt()  argument
2173 	if (rq->rt.overloaded)  in rq_offline_rt()
2174 		rt_clear_overload(rq);  in rq_offline_rt()
2176 	__disable_runtime(rq);  in rq_offline_rt()
2178 	cpupri_set(&rq->rd->cpupri, rq->cpu, CPUPRI_INVALID);  in rq_offline_rt()
2185 static void switched_from_rt(struct rq *rq, struct task_struct *p)  in switched_from_rt()  argument
2194 	if (!task_on_rq_queued(p) || rq->rt.rt_nr_running)  in switched_from_rt()
2197 	rt_queue_pull_task(rq);  in switched_from_rt()
2216 static void switched_to_rt(struct rq *rq, struct task_struct *p)  in switched_to_rt()  argument
2225 	if (task_on_rq_queued(p) && rq->curr != p) {  in switched_to_rt()
2227 		if (p->nr_cpus_allowed > 1 && rq->rt.overloaded)  in switched_to_rt()
2228 			rt_queue_push_tasks(rq);  in switched_to_rt()
2230 		if (p->prio < rq->curr->prio && cpu_online(cpu_of(rq)))  in switched_to_rt()
2231 			resched_curr(rq);  in switched_to_rt()
2240 prio_changed_rt(struct rq *rq, struct task_struct *p, int oldprio)  in prio_changed_rt()  argument
2245 	if (rq->curr == p) {  in prio_changed_rt()
2252 			rt_queue_pull_task(rq);  in prio_changed_rt()
2258 		if (p->prio > rq->rt.highest_prio.curr)  in prio_changed_rt()
2259 			resched_curr(rq);  in prio_changed_rt()
2263 			resched_curr(rq);  in prio_changed_rt()
2271 		if (p->prio < rq->curr->prio)  in prio_changed_rt()
2272 			resched_curr(rq);  in prio_changed_rt()
2277 static void watchdog(struct rq *rq, struct task_struct *p)  in watchdog()  argument
2301 static inline void watchdog(struct rq *rq, struct task_struct *p) { }  in watchdog()  argument
2312 static void task_tick_rt(struct rq *rq, struct task_struct *p, int queued)  in task_tick_rt()  argument
2316 	update_curr_rt(rq);  in task_tick_rt()
2317 	update_rt_rq_load_avg(rq_clock_pelt(rq), rq, 1);  in task_tick_rt()
2319 	watchdog(rq, p);  in task_tick_rt()
2339 			requeue_task_rt(rq, p, 0);  in task_tick_rt()
2340 			resched_curr(rq);  in task_tick_rt()
2346 static unsigned int get_rr_interval_rt(struct rq *rq, struct task_struct *task)  in get_rr_interval_rt()  argument