120 static inline struct rq *rq_of_rt_rq(struct rt_rq *rt_rq)  in rq_of_rt_rq()
122 	return rt_rq->rq;  in rq_of_rt_rq()
130 static inline struct rq *rq_of_rt_se(struct sched_rt_entity *rt_se)  in rq_of_rt_se()
134 	return rt_rq->rq;  in rq_of_rt_se()
159 	struct rq *rq = cpu_rq(cpu);  in init_tg_rt_entry()  local
163 	rt_rq->rq = rq;  in init_tg_rt_entry()
173 		rt_se->rt_rq = &rq->rt;  in init_tg_rt_entry()
231 static inline struct rq *rq_of_rt_rq(struct rt_rq *rt_rq)  in rq_of_rt_rq()
233 	return container_of(rt_rq, struct rq, rt);  in rq_of_rt_rq()
236 static inline struct rq *rq_of_rt_se(struct sched_rt_entity *rt_se)  in rq_of_rt_se()
245 	struct rq *rq = rq_of_rt_se(rt_se);  in rt_rq_of_se()  local
247 	return &rq->rt;  in rt_rq_of_se()
260 static void pull_rt_task(struct rq *this_rq);
262 static inline bool need_pull_rt_task(struct rq *rq, struct task_struct *prev)  in need_pull_rt_task()  argument
265 	return rq->rt.highest_prio.curr > prev->prio;  in need_pull_rt_task()
268 static inline int rt_overloaded(struct rq *rq)  in rt_overloaded()  argument
270 	return atomic_read(&rq->rd->rto_count);  in rt_overloaded()
273 static inline void rt_set_overload(struct rq *rq)  in rt_set_overload()  argument
275 	if (!rq->online)  in rt_set_overload()
278 	cpumask_set_cpu(rq->cpu, rq->rd->rto_mask);  in rt_set_overload()
289 	atomic_inc(&rq->rd->rto_count);  in rt_set_overload()
292 static inline void rt_clear_overload(struct rq *rq)  in rt_clear_overload()  argument
294 	if (!rq->online)  in rt_clear_overload()
298 	atomic_dec(&rq->rd->rto_count);  in rt_clear_overload()
299 	cpumask_clear_cpu(rq->cpu, rq->rd->rto_mask);  in rt_clear_overload()
349 static inline int has_pushable_tasks(struct rq *rq)  in has_pushable_tasks()  argument
351 	return !plist_head_empty(&rq->rt.pushable_tasks);  in has_pushable_tasks()
357 static void push_rt_tasks(struct rq *);
358 static void pull_rt_task(struct rq *);
360 static inline void rt_queue_push_tasks(struct rq *rq)  in rt_queue_push_tasks()  argument
362 	if (!has_pushable_tasks(rq))  in rt_queue_push_tasks()
365 	queue_balance_callback(rq, &per_cpu(rt_push_head, rq->cpu), push_rt_tasks);  in rt_queue_push_tasks()
368 static inline void rt_queue_pull_task(struct rq *rq)  in rt_queue_pull_task()  argument
370 	queue_balance_callback(rq, &per_cpu(rt_pull_head, rq->cpu), pull_rt_task);  in rt_queue_pull_task()
373 static void enqueue_pushable_task(struct rq *rq, struct task_struct *p)  in enqueue_pushable_task()  argument
375 	plist_del(&p->pushable_tasks, &rq->rt.pushable_tasks);  in enqueue_pushable_task()
377 	plist_add(&p->pushable_tasks, &rq->rt.pushable_tasks);  in enqueue_pushable_task()
380 	if (p->prio < rq->rt.highest_prio.next)  in enqueue_pushable_task()
381 		rq->rt.highest_prio.next = p->prio;  in enqueue_pushable_task()
384 static void dequeue_pushable_task(struct rq *rq, struct task_struct *p)  in dequeue_pushable_task()  argument
386 	plist_del(&p->pushable_tasks, &rq->rt.pushable_tasks);  in dequeue_pushable_task()
389 	if (has_pushable_tasks(rq)) {  in dequeue_pushable_task()
390 		p = plist_first_entry(&rq->rt.pushable_tasks,  in dequeue_pushable_task()
392 		rq->rt.highest_prio.next = p->prio;  in dequeue_pushable_task()
394 		rq->rt.highest_prio.next = MAX_RT_PRIO;  in dequeue_pushable_task()
399 static inline void enqueue_pushable_task(struct rq *rq, struct task_struct *p)  in enqueue_pushable_task()  argument
403 static inline void dequeue_pushable_task(struct rq *rq, struct task_struct *p)  in dequeue_pushable_task()  argument
417 static inline bool need_pull_rt_task(struct rq *rq, struct task_struct *prev)  in need_pull_rt_task()  argument
422 static inline void pull_rt_task(struct rq *this_rq)  in pull_rt_task()
426 static inline void rt_queue_push_tasks(struct rq *rq)  in rt_queue_push_tasks()  argument
469 #define for_each_rt_rq(rt_rq, iter, rq)					\  argument
472 		(rt_rq = iter->rt_rq[cpu_of(rq)]);)
488 	struct rq *rq = rq_of_rt_rq(rt_rq);  in sched_rt_rq_enqueue()  local
491 	int cpu = cpu_of(rq);  in sched_rt_rq_enqueue()
502 			resched_curr(rq);  in sched_rt_rq_enqueue()
576 #define for_each_rt_rq(rt_rq, iter, rq) \  argument
577 	for ((void) iter, rt_rq = &rq->rt; rt_rq; rt_rq = NULL)
589 	struct rq *rq = rq_of_rt_rq(rt_rq);  in sched_rt_rq_enqueue()  local
595 	resched_curr(rq);  in sched_rt_rq_enqueue()
690 static void __disable_runtime(struct rq *rq)  in __disable_runtime()  argument
692 	struct root_domain *rd = rq->rd;  in __disable_runtime()
699 	for_each_rt_rq(rt_rq, iter, rq) {  in __disable_runtime()
772 static void __enable_runtime(struct rq *rq)  in __enable_runtime()  argument
783 	for_each_rt_rq(rt_rq, iter, rq) {  in __enable_runtime()
833 		struct rq *rq = rq_of_rt_rq(rt_rq);  in do_sched_rt_period_timer()  local
848 		raw_spin_lock(&rq->lock);  in do_sched_rt_period_timer()
849 		update_rq_clock(rq);  in do_sched_rt_period_timer()
870 				if (rt_rq->rt_nr_running && rq->curr == rq->idle)  in do_sched_rt_period_timer()
871 					rq_clock_cancel_skipupdate(rq);  in do_sched_rt_period_timer()
886 		raw_spin_unlock(&rq->lock);  in do_sched_rt_period_timer()
954 static void update_curr_rt(struct rq *rq)  in update_curr_rt()  argument
956 	struct task_struct *curr = rq->curr;  in update_curr_rt()
964 	now = rq_clock_task(rq);  in update_curr_rt()
988 				resched_curr(rq);  in update_curr_rt()
997 	struct rq *rq = rq_of_rt_rq(rt_rq);  in dequeue_top_rt_rq()  local
999 	BUG_ON(&rq->rt != rt_rq);  in dequeue_top_rt_rq()
1004 	BUG_ON(!rq->nr_running);  in dequeue_top_rt_rq()
1006 	sub_nr_running(rq, rt_rq->rt_nr_running);  in dequeue_top_rt_rq()
1014 	struct rq *rq = rq_of_rt_rq(rt_rq);  in enqueue_top_rt_rq()  local
1016 	BUG_ON(&rq->rt != rt_rq);  in enqueue_top_rt_rq()
1025 		add_nr_running(rq, rt_rq->rt_nr_running);  in enqueue_top_rt_rq()
1030 	cpufreq_update_util(rq, 0);  in enqueue_top_rt_rq()
1038 	struct rq *rq = rq_of_rt_rq(rt_rq);  in inc_rt_prio_smp()  local
1044 	if (&rq->rt != rt_rq)  in inc_rt_prio_smp()
1047 	if (rq->online && prio < prev_prio)  in inc_rt_prio_smp()
1048 		cpupri_set(&rq->rd->cpupri, rq->cpu, prio);  in inc_rt_prio_smp()
1054 	struct rq *rq = rq_of_rt_rq(rt_rq);  in dec_rt_prio_smp()  local
1060 	if (&rq->rt != rt_rq)  in dec_rt_prio_smp()
1063 	if (rq->online && rt_rq->highest_prio.curr != prev_prio)  in dec_rt_prio_smp()
1064 		cpupri_set(&rq->rd->cpupri, rq->cpu, rt_rq->highest_prio.curr);  in dec_rt_prio_smp()
1301 	struct rq *rq = rq_of_rt_se(rt_se);  in enqueue_rt_entity()  local
1306 	enqueue_top_rt_rq(&rq->rt);  in enqueue_rt_entity()
1311 	struct rq *rq = rq_of_rt_se(rt_se);  in dequeue_rt_entity()  local
1321 	enqueue_top_rt_rq(&rq->rt);  in dequeue_rt_entity()
1328 enqueue_task_rt(struct rq *rq, struct task_struct *p, int flags)  in enqueue_task_rt()  argument
1337 	if (!task_current(rq, p) && p->nr_cpus_allowed > 1)  in enqueue_task_rt()
1338 		enqueue_pushable_task(rq, p);  in enqueue_task_rt()
1341 static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int flags)  in dequeue_task_rt()  argument
1345 	update_curr_rt(rq);  in dequeue_task_rt()
1348 	dequeue_pushable_task(rq, p);  in dequeue_task_rt()
1369 static void requeue_task_rt(struct rq *rq, struct task_struct *p, int head)  in requeue_task_rt()  argument
1380 static void yield_task_rt(struct rq *rq)  in yield_task_rt()  argument
1382 	requeue_task_rt(rq, rq->curr, 0);  in yield_task_rt()
1392 	struct rq *rq;  in select_task_rq_rt()  local
1398 	rq = cpu_rq(cpu);  in select_task_rq_rt()
1401 	curr = READ_ONCE(rq->curr); /* unlocked access */  in select_task_rq_rt()
1444 static void check_preempt_equal_prio(struct rq *rq, struct task_struct *p)  in check_preempt_equal_prio()  argument
1450 	if (rq->curr->nr_cpus_allowed == 1 ||  in check_preempt_equal_prio()
1451 	    !cpupri_find(&rq->rd->cpupri, rq->curr, NULL))  in check_preempt_equal_prio()
1459 	    && cpupri_find(&rq->rd->cpupri, p, NULL))  in check_preempt_equal_prio()
1467 	requeue_task_rt(rq, p, 1);  in check_preempt_equal_prio()
1468 	resched_curr(rq);  in check_preempt_equal_prio()
1476 static void check_preempt_curr_rt(struct rq *rq, struct task_struct *p, int flags)  in check_preempt_curr_rt()  argument
1478 	if (p->prio < rq->curr->prio) {  in check_preempt_curr_rt()
1479 		resched_curr(rq);  in check_preempt_curr_rt()
1496 	if (p->prio == rq->curr->prio && !test_tsk_need_resched(rq->curr))  in check_preempt_curr_rt()
1497 		check_preempt_equal_prio(rq, p);  in check_preempt_curr_rt()
1501 static struct sched_rt_entity *pick_next_rt_entity(struct rq *rq,  in pick_next_rt_entity()  argument
1518 static struct task_struct *_pick_next_task_rt(struct rq *rq)  in _pick_next_task_rt()  argument
1522 	struct rt_rq *rt_rq  = &rq->rt;  in _pick_next_task_rt()
1525 		rt_se = pick_next_rt_entity(rq, rt_rq);  in _pick_next_task_rt()
1531 	p->se.exec_start = rq_clock_task(rq);  in _pick_next_task_rt()
1537 pick_next_task_rt(struct rq *rq, struct task_struct *prev, struct rq_flags *rf)  in pick_next_task_rt()  argument
1540 	struct rt_rq *rt_rq = &rq->rt;  in pick_next_task_rt()
1542 	if (need_pull_rt_task(rq, prev)) {  in pick_next_task_rt()
1549 		rq_unpin_lock(rq, rf);  in pick_next_task_rt()
1550 		pull_rt_task(rq);  in pick_next_task_rt()
1551 		rq_repin_lock(rq, rf);  in pick_next_task_rt()
1557 		if (unlikely((rq->stop && task_on_rq_queued(rq->stop)) ||  in pick_next_task_rt()
1558 			     rq->dl.dl_nr_running))  in pick_next_task_rt()
1567 		update_curr_rt(rq);  in pick_next_task_rt()
1572 	put_prev_task(rq, prev);  in pick_next_task_rt()
1574 	p = _pick_next_task_rt(rq);  in pick_next_task_rt()
1577 	dequeue_pushable_task(rq, p);  in pick_next_task_rt()
1579 	rt_queue_push_tasks(rq);  in pick_next_task_rt()
1586 	if (rq->curr->sched_class != &rt_sched_class)  in pick_next_task_rt()
1587 		update_rt_rq_load_avg(rq_clock_task(rq), rq, 0);  in pick_next_task_rt()
1592 static void put_prev_task_rt(struct rq *rq, struct task_struct *p)  in put_prev_task_rt()  argument
1594 	update_curr_rt(rq);  in put_prev_task_rt()
1596 	update_rt_rq_load_avg(rq_clock_task(rq), rq, 1);  in put_prev_task_rt()
1603 		enqueue_pushable_task(rq, p);  in put_prev_task_rt()
1611 static int pick_rt_task(struct rq *rq, struct task_struct *p, int cpu)  in pick_rt_task()  argument
1613 	if (!task_running(rq, p) &&  in pick_rt_task()
1624 static struct task_struct *pick_highest_pushable_task(struct rq *rq, int cpu)  in pick_highest_pushable_task()  argument
1626 	struct plist_head *head = &rq->rt.pushable_tasks;  in pick_highest_pushable_task()
1629 	if (!has_pushable_tasks(rq))  in pick_highest_pushable_task()
1633 		if (pick_rt_task(rq, p, cpu))  in pick_highest_pushable_task()
1718 static struct rq *find_lock_lowest_rq(struct task_struct *task, struct rq *rq)  in find_lock_lowest_rq()  argument
1720 	struct rq *lowest_rq = NULL;  in find_lock_lowest_rq()
1727 		if ((cpu == -1) || (cpu == rq->cpu))  in find_lock_lowest_rq()
1743 		if (double_lock_balance(rq, lowest_rq)) {  in find_lock_lowest_rq()
1750 			if (unlikely(task_rq(task) != rq ||  in find_lock_lowest_rq()
1752 				     task_running(rq, task) ||  in find_lock_lowest_rq()
1756 				double_unlock_balance(rq, lowest_rq);  in find_lock_lowest_rq()
1767 		double_unlock_balance(rq, lowest_rq);  in find_lock_lowest_rq()
1774 static struct task_struct *pick_next_pushable_task(struct rq *rq)  in pick_next_pushable_task()  argument
1778 	if (!has_pushable_tasks(rq))  in pick_next_pushable_task()
1781 	p = plist_first_entry(&rq->rt.pushable_tasks,  in pick_next_pushable_task()
1784 	BUG_ON(rq->cpu != task_cpu(p));  in pick_next_pushable_task()
1785 	BUG_ON(task_current(rq, p));  in pick_next_pushable_task()
1799 static int push_rt_task(struct rq *rq)  in push_rt_task()  argument
1802 	struct rq *lowest_rq;  in push_rt_task()
1805 	if (!rq->rt.overloaded)  in push_rt_task()
1808 	next_task = pick_next_pushable_task(rq);  in push_rt_task()
1813 	if (unlikely(next_task == rq->curr)) {  in push_rt_task()
1823 	if (unlikely(next_task->prio < rq->curr->prio)) {  in push_rt_task()
1824 		resched_curr(rq);  in push_rt_task()
1832 	lowest_rq = find_lock_lowest_rq(next_task, rq);  in push_rt_task()
1843 		task = pick_next_pushable_task(rq);  in push_rt_task()
1866 	deactivate_task(rq, next_task, 0);  in push_rt_task()
1873 	double_unlock_balance(rq, lowest_rq);  in push_rt_task()
1881 static void push_rt_tasks(struct rq *rq)  in push_rt_tasks()  argument
1884 	while (push_rt_task(rq))  in push_rt_tasks()
1988 static void tell_cpu_to_push(struct rq *rq)  in tell_cpu_to_push()  argument
1993 	atomic_inc(&rq->rd->rto_loop_next);  in tell_cpu_to_push()
1996 	if (!rto_start_trylock(&rq->rd->rto_loop_start))  in tell_cpu_to_push()
1999 	raw_spin_lock(&rq->rd->rto_lock);  in tell_cpu_to_push()
2007 	if (rq->rd->rto_cpu < 0)  in tell_cpu_to_push()
2008 		cpu = rto_next_cpu(rq->rd);  in tell_cpu_to_push()
2010 	raw_spin_unlock(&rq->rd->rto_lock);  in tell_cpu_to_push()
2012 	rto_start_unlock(&rq->rd->rto_loop_start);  in tell_cpu_to_push()
2016 		sched_get_rd(rq->rd);  in tell_cpu_to_push()
2017 		irq_work_queue_on(&rq->rd->rto_push_work, cpu);  in tell_cpu_to_push()
2026 	struct rq *rq;  in rto_push_irq_work_func()  local
2029 	rq = this_rq();  in rto_push_irq_work_func()
2035 	if (has_pushable_tasks(rq)) {  in rto_push_irq_work_func()
2036 		raw_spin_lock(&rq->lock);  in rto_push_irq_work_func()
2037 		push_rt_tasks(rq);  in rto_push_irq_work_func()
2038 		raw_spin_unlock(&rq->lock);  in rto_push_irq_work_func()
2058 static void pull_rt_task(struct rq *this_rq)  in pull_rt_task()
2063 	struct rq *src_rq;  in pull_rt_task()
2160 static void task_woken_rt(struct rq *rq, struct task_struct *p)  in task_woken_rt()  argument
2162 	if (!task_running(rq, p) &&  in task_woken_rt()
2163 	    !test_tsk_need_resched(rq->curr) &&  in task_woken_rt()
2165 	    (dl_task(rq->curr) || rt_task(rq->curr)) &&  in task_woken_rt()
2166 	    (rq->curr->nr_cpus_allowed < 2 ||  in task_woken_rt()
2167 	     rq->curr->prio <= p->prio))  in task_woken_rt()
2168 		push_rt_tasks(rq);  in task_woken_rt()
2172 static void rq_online_rt(struct rq *rq)  in rq_online_rt()  argument
2174 	if (rq->rt.overloaded)  in rq_online_rt()
2175 		rt_set_overload(rq);  in rq_online_rt()
2177 	__enable_runtime(rq);  in rq_online_rt()
2179 	cpupri_set(&rq->rd->cpupri, rq->cpu, rq->rt.highest_prio.curr);  in rq_online_rt()
2183 static void rq_offline_rt(struct rq *rq)  in rq_offline_rt()  argument
2185 	if (rq->rt.overloaded)  in rq_offline_rt()
2186 		rt_clear_overload(rq);  in rq_offline_rt()
2188 	__disable_runtime(rq);  in rq_offline_rt()
2190 	cpupri_set(&rq->rd->cpupri, rq->cpu, CPUPRI_INVALID);  in rq_offline_rt()
2197 static void switched_from_rt(struct rq *rq, struct task_struct *p)  in switched_from_rt()  argument
2206 	if (!task_on_rq_queued(p) || rq->rt.rt_nr_running)  in switched_from_rt()
2209 	rt_queue_pull_task(rq);  in switched_from_rt()
2228 static void switched_to_rt(struct rq *rq, struct task_struct *p)  in switched_to_rt()  argument
2237 	if (task_on_rq_queued(p) && rq->curr != p) {  in switched_to_rt()
2239 		if (p->nr_cpus_allowed > 1 && rq->rt.overloaded)  in switched_to_rt()
2240 			rt_queue_push_tasks(rq);  in switched_to_rt()
2242 		if (p->prio < rq->curr->prio && cpu_online(cpu_of(rq)))  in switched_to_rt()
2243 			resched_curr(rq);  in switched_to_rt()
2252 prio_changed_rt(struct rq *rq, struct task_struct *p, int oldprio)  in prio_changed_rt()  argument
2257 	if (rq->curr == p) {  in prio_changed_rt()
2264 			rt_queue_pull_task(rq);  in prio_changed_rt()
2270 		if (p->prio > rq->rt.highest_prio.curr)  in prio_changed_rt()
2271 			resched_curr(rq);  in prio_changed_rt()
2275 			resched_curr(rq);  in prio_changed_rt()
2283 		if (p->prio < rq->curr->prio)  in prio_changed_rt()
2284 			resched_curr(rq);  in prio_changed_rt()
2289 static void watchdog(struct rq *rq, struct task_struct *p)  in watchdog()  argument
2311 static inline void watchdog(struct rq *rq, struct task_struct *p) { }  in watchdog()  argument
2322 static void task_tick_rt(struct rq *rq, struct task_struct *p, int queued)  in task_tick_rt()  argument
2326 	update_curr_rt(rq);  in task_tick_rt()
2327 	update_rt_rq_load_avg(rq_clock_task(rq), rq, 1);  in task_tick_rt()
2329 	watchdog(rq, p);  in task_tick_rt()
2349 			requeue_task_rt(rq, p, 0);  in task_tick_rt()
2350 			resched_curr(rq);  in task_tick_rt()
2356 static void set_curr_task_rt(struct rq *rq)  in set_curr_task_rt()  argument
2358 	struct task_struct *p = rq->curr;  in set_curr_task_rt()
2360 	p->se.exec_start = rq_clock_task(rq);  in set_curr_task_rt()
2363 	dequeue_pushable_task(rq, p);  in set_curr_task_rt()
2366 static unsigned int get_rr_interval_rt(struct rq *rq, struct task_struct *task)  in get_rr_interval_rt()  argument