172 struct hrtimer_clock_base *lock_hrtimer_base(const struct hrtimer *timer,  in lock_hrtimer_base()  argument
174 	__acquires(&timer->base->lock)  in lock_hrtimer_base()
179 		base = READ_ONCE(timer->base);  in lock_hrtimer_base()
182 			if (likely(base == timer->base))  in lock_hrtimer_base()
205 static bool hrtimer_suitable_target(struct hrtimer *timer, struct hrtimer_clock_base *new_base,  in hrtimer_suitable_target()  argument
227 	expires = ktime_sub(hrtimer_get_expires(timer), new_base->offset);  in hrtimer_suitable_target()
260 switch_hrtimer_base(struct hrtimer *timer, struct hrtimer_clock_base *base,  in switch_hrtimer_base()  argument
282 		if (unlikely(hrtimer_callback_running(timer)))  in switch_hrtimer_base()
286 		WRITE_ONCE(timer->base, &migration_base);  in switch_hrtimer_base()
290 		if (!hrtimer_suitable_target(timer, new_base, new_cpu_base,  in switch_hrtimer_base()
295 			WRITE_ONCE(timer->base, base);  in switch_hrtimer_base()
298 		WRITE_ONCE(timer->base, new_base);  in switch_hrtimer_base()
300 		if (!hrtimer_suitable_target(timer, new_base,  new_cpu_base, this_cpu_base)) {  in switch_hrtimer_base()
311 lock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)  in lock_hrtimer_base()  argument
312 	__acquires(&timer->base->cpu_base->lock)  in lock_hrtimer_base()
314 	struct hrtimer_clock_base *base = timer->base;  in lock_hrtimer_base()
388 	struct hrtimer *timer = addr;  in hrtimer_fixup_init()  local
392 		hrtimer_cancel(timer);  in hrtimer_fixup_init()
393 		debug_object_init(timer, &hrtimer_debug_descr);  in hrtimer_fixup_init()
422 	struct hrtimer *timer = addr;  in hrtimer_fixup_free()  local
426 		hrtimer_cancel(timer);  in hrtimer_fixup_free()
427 		debug_object_free(timer, &hrtimer_debug_descr);  in hrtimer_fixup_free()
442 static inline void debug_hrtimer_init(struct hrtimer *timer)  in debug_hrtimer_init()  argument
444 	debug_object_init(timer, &hrtimer_debug_descr);  in debug_hrtimer_init()
447 static inline void debug_hrtimer_init_on_stack(struct hrtimer *timer)  in debug_hrtimer_init_on_stack()  argument
449 	debug_object_init_on_stack(timer, &hrtimer_debug_descr);  in debug_hrtimer_init_on_stack()
452 static inline void debug_hrtimer_activate(struct hrtimer *timer,  in debug_hrtimer_activate()  argument
455 	debug_object_activate(timer, &hrtimer_debug_descr);  in debug_hrtimer_activate()
458 static inline void debug_hrtimer_deactivate(struct hrtimer *timer)  in debug_hrtimer_deactivate()  argument
460 	debug_object_deactivate(timer, &hrtimer_debug_descr);  in debug_hrtimer_deactivate()
463 void destroy_hrtimer_on_stack(struct hrtimer *timer)  in destroy_hrtimer_on_stack()  argument
465 	debug_object_free(timer, &hrtimer_debug_descr);  in destroy_hrtimer_on_stack()
471 static inline void debug_hrtimer_init(struct hrtimer *timer) { }  in debug_hrtimer_init()  argument
472 static inline void debug_hrtimer_init_on_stack(struct hrtimer *timer) { }  in debug_hrtimer_init_on_stack()  argument
473 static inline void debug_hrtimer_activate(struct hrtimer *timer,  in debug_hrtimer_activate()  argument
475 static inline void debug_hrtimer_deactivate(struct hrtimer *timer) { }  in debug_hrtimer_deactivate()  argument
479 debug_init(struct hrtimer *timer, clockid_t clockid,  in debug_init()  argument
482 	debug_hrtimer_init(timer);  in debug_init()
483 	trace_hrtimer_init(timer, clockid, mode);  in debug_init()
486 static inline void debug_init_on_stack(struct hrtimer *timer, clockid_t clockid,  in debug_init_on_stack()  argument
489 	debug_hrtimer_init_on_stack(timer);  in debug_init_on_stack()
490 	trace_hrtimer_init(timer, clockid, mode);  in debug_init_on_stack()
493 static inline void debug_activate(struct hrtimer *timer,  in debug_activate()  argument
496 	debug_hrtimer_activate(timer, mode);  in debug_activate()
497 	trace_hrtimer_start(timer, mode);  in debug_activate()
500 static inline void debug_deactivate(struct hrtimer *timer)  in debug_deactivate()  argument
502 	debug_hrtimer_deactivate(timer);  in debug_deactivate()
503 	trace_hrtimer_cancel(timer);  in debug_deactivate()
533 		struct hrtimer *timer;  in __hrtimer_next_event_base()  local
536 		timer = container_of(next, struct hrtimer, node);  in __hrtimer_next_event_base()
537 		if (timer == exclude) {  in __hrtimer_next_event_base()
543 			timer = container_of(next, struct hrtimer, node);  in __hrtimer_next_event_base()
545 		expires = ktime_sub(hrtimer_get_expires(timer), base->offset);  in __hrtimer_next_event_base()
553 			if (timer->is_soft)  in __hrtimer_next_event_base()
554 				cpu_base->softirq_next_timer = timer;  in __hrtimer_next_event_base()
556 				cpu_base->next_timer = timer;  in __hrtimer_next_event_base()
822 static void hrtimer_reprogram(struct hrtimer *timer, bool reprogram)  in hrtimer_reprogram()  argument
825 	struct hrtimer_clock_base *base = timer->base;  in hrtimer_reprogram()
826 	ktime_t expires = ktime_sub(hrtimer_get_expires(timer), base->offset);  in hrtimer_reprogram()
828 	WARN_ON_ONCE(hrtimer_get_expires_tv64(timer) < 0);  in hrtimer_reprogram()
837 	if (timer->is_soft) {  in hrtimer_reprogram()
853 		timer_cpu_base->softirq_next_timer = timer;  in hrtimer_reprogram()
878 	cpu_base->next_timer = timer;  in hrtimer_reprogram()
880 	__hrtimer_reprogram(cpu_base, timer, expires);  in hrtimer_reprogram()
1029 void unlock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)  in unlock_hrtimer_base()  argument
1030 	__releases(&timer->base->cpu_base->lock)  in unlock_hrtimer_base()
1032 	raw_spin_unlock_irqrestore(&timer->base->cpu_base->lock, *flags);  in unlock_hrtimer_base()
1054 u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval)  in hrtimer_forward()  argument
1059 	delta = ktime_sub(now, hrtimer_get_expires(timer));  in hrtimer_forward()
1064 	if (WARN_ON(timer->state & HRTIMER_STATE_ENQUEUED))  in hrtimer_forward()
1074 		hrtimer_add_expires_ns(timer, incr * orun);  in hrtimer_forward()
1075 		if (hrtimer_get_expires_tv64(timer) > now)  in hrtimer_forward()
1083 	hrtimer_add_expires(timer, interval);  in hrtimer_forward()
1097 static bool enqueue_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base,  in enqueue_hrtimer()  argument
1100 	debug_activate(timer, mode);  in enqueue_hrtimer()
1106 	WRITE_ONCE(timer->state, HRTIMER_STATE_ENQUEUED);  in enqueue_hrtimer()
1108 	return timerqueue_add(&base->active, &timer->node);  in enqueue_hrtimer()
1121 static void __remove_hrtimer(struct hrtimer *timer,  in __remove_hrtimer()  argument
1126 	u8 state = timer->state;  in __remove_hrtimer()
1129 	WRITE_ONCE(timer->state, newstate);  in __remove_hrtimer()
1133 	if (!timerqueue_del(&base->active, &timer->node))  in __remove_hrtimer()
1144 	if (reprogram && timer == cpu_base->next_timer)  in __remove_hrtimer()
1152 remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base,  in remove_hrtimer()  argument
1155 	u8 state = timer->state;  in remove_hrtimer()
1168 		debug_deactivate(timer);  in remove_hrtimer()
1182 		__remove_hrtimer(timer, base, state, reprogram);  in remove_hrtimer()
1188 static inline ktime_t hrtimer_update_lowres(struct hrtimer *timer, ktime_t tim,  in hrtimer_update_lowres()  argument
1197 	timer->is_rel = mode & HRTIMER_MODE_REL;  in hrtimer_update_lowres()
1198 	if (timer->is_rel)  in hrtimer_update_lowres()
1229 static int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,  in __hrtimer_start_range_ns()  argument
1246 	force_local &= base->cpu_base->next_timer == timer;  in __hrtimer_start_range_ns()
1265 	remove_hrtimer(timer, base, true, force_local);  in __hrtimer_start_range_ns()
1270 	tim = hrtimer_update_lowres(timer, tim, mode);  in __hrtimer_start_range_ns()
1272 	hrtimer_set_expires_range_ns(timer, tim, delta_ns);  in __hrtimer_start_range_ns()
1276 		new_base = switch_hrtimer_base(timer, base,  in __hrtimer_start_range_ns()
1282 	first = enqueue_hrtimer(timer, new_base, mode);  in __hrtimer_start_range_ns()
1323 void hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,  in hrtimer_start_range_ns()  argument
1329 	if (WARN_ON_ONCE(!timer->function))  in hrtimer_start_range_ns()
1337 		WARN_ON_ONCE(!(mode & HRTIMER_MODE_SOFT) ^ !timer->is_soft);  in hrtimer_start_range_ns()
1339 		WARN_ON_ONCE(!(mode & HRTIMER_MODE_HARD) ^ !timer->is_hard);  in hrtimer_start_range_ns()
1341 	base = lock_hrtimer_base(timer, &flags);  in hrtimer_start_range_ns()
1343 	if (__hrtimer_start_range_ns(timer, tim, delta_ns, mode, base))  in hrtimer_start_range_ns()
1344 		hrtimer_reprogram(timer, true);  in hrtimer_start_range_ns()
1346 	unlock_hrtimer_base(timer, &flags);  in hrtimer_start_range_ns()
1361 int hrtimer_try_to_cancel(struct hrtimer *timer)  in hrtimer_try_to_cancel()  argument
1373 	if (!hrtimer_active(timer))  in hrtimer_try_to_cancel()
1376 	base = lock_hrtimer_base(timer, &flags);  in hrtimer_try_to_cancel()
1378 	if (!hrtimer_callback_running(timer))  in hrtimer_try_to_cancel()
1379 		ret = remove_hrtimer(timer, base, false, false);  in hrtimer_try_to_cancel()
1381 	unlock_hrtimer_base(timer, &flags);  in hrtimer_try_to_cancel()
1452 void hrtimer_cancel_wait_running(const struct hrtimer *timer)  in hrtimer_cancel_wait_running()  argument
1455 	struct hrtimer_clock_base *base = READ_ONCE(timer->base);  in hrtimer_cancel_wait_running()
1461 	if (!timer->is_soft || is_migration_base(base)) {  in hrtimer_cancel_wait_running()
1497 int hrtimer_cancel(struct hrtimer *timer)  in hrtimer_cancel()  argument
1502 		ret = hrtimer_try_to_cancel(timer);  in hrtimer_cancel()
1505 			hrtimer_cancel_wait_running(timer);  in hrtimer_cancel()
1516 ktime_t __hrtimer_get_remaining(const struct hrtimer *timer, bool adjust)  in __hrtimer_get_remaining()  argument
1521 	lock_hrtimer_base(timer, &flags);  in __hrtimer_get_remaining()
1523 		rem = hrtimer_expires_remaining_adjusted(timer);  in __hrtimer_get_remaining()
1525 		rem = hrtimer_expires_remaining(timer);  in __hrtimer_get_remaining()
1526 	unlock_hrtimer_base(timer, &flags);  in __hrtimer_get_remaining()
1605 static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id,  in __hrtimer_init()  argument
1621 	memset(timer, 0, sizeof(struct hrtimer));  in __hrtimer_init()
1635 	timer->is_soft = softtimer;  in __hrtimer_init()
1636 	timer->is_hard = !!(mode & HRTIMER_MODE_HARD);  in __hrtimer_init()
1637 	timer->base = &cpu_base->clock_base[base];  in __hrtimer_init()
1638 	timerqueue_init(&timer->node);  in __hrtimer_init()
1641 static void __hrtimer_setup(struct hrtimer *timer,  in __hrtimer_setup()  argument
1645 	__hrtimer_init(timer, clock_id, mode);  in __hrtimer_setup()
1648 		timer->function = hrtimer_dummy_timeout;  in __hrtimer_setup()
1650 		timer->function = function;  in __hrtimer_setup()
1665 void hrtimer_init(struct hrtimer *timer, clockid_t clock_id,  in hrtimer_init()  argument
1668 	debug_init(timer, clock_id, mode);  in hrtimer_init()
1669 	__hrtimer_init(timer, clock_id, mode);  in hrtimer_init()
1686 void hrtimer_setup(struct hrtimer *timer, enum hrtimer_restart (*function)(struct hrtimer *),  in hrtimer_setup()  argument
1689 	debug_init(timer, clock_id, mode);  in hrtimer_setup()
1690 	__hrtimer_setup(timer, function, clock_id, mode);  in hrtimer_setup()
1704 void hrtimer_setup_on_stack(struct hrtimer *timer,  in hrtimer_setup_on_stack()  argument
1708 	debug_init_on_stack(timer, clock_id, mode);  in hrtimer_setup_on_stack()
1709 	__hrtimer_setup(timer, function, clock_id, mode);  in hrtimer_setup_on_stack()
1720 bool hrtimer_active(const struct hrtimer *timer)  in hrtimer_active()  argument
1726 		base = READ_ONCE(timer->base);  in hrtimer_active()
1729 		if (timer->state != HRTIMER_STATE_INACTIVE ||  in hrtimer_active()
1730 		    base->running == timer)  in hrtimer_active()
1734 		 base != READ_ONCE(timer->base));  in hrtimer_active()
1760 			  struct hrtimer *timer, ktime_t *now,  in __run_hrtimer()  argument
1769 	debug_deactivate(timer);  in __run_hrtimer()
1770 	base->running = timer;  in __run_hrtimer()
1781 	__remove_hrtimer(timer, base, HRTIMER_STATE_INACTIVE, 0);  in __run_hrtimer()
1782 	fn = timer->function;  in __run_hrtimer()
1790 		timer->is_rel = false;  in __run_hrtimer()
1798 	trace_hrtimer_expire_entry(timer, now);  in __run_hrtimer()
1799 	expires_in_hardirq = lockdep_hrtimer_enter(timer);  in __run_hrtimer()
1801 	restart = fn(timer);  in __run_hrtimer()
1804 	trace_hrtimer_expire_exit(timer);  in __run_hrtimer()
1817 	    !(timer->state & HRTIMER_STATE_ENQUEUED))  in __run_hrtimer()
1818 		enqueue_hrtimer(timer, base, HRTIMER_MODE_ABS);  in __run_hrtimer()
1829 	WARN_ON_ONCE(base->running != timer);  in __run_hrtimer()
1846 			struct hrtimer *timer;  in __hrtimer_run_queues()  local
1848 			timer = container_of(node, struct hrtimer, node);  in __hrtimer_run_queues()
1862 			if (basenow < hrtimer_get_softexpires_tv64(timer))  in __hrtimer_run_queues()
1865 			__run_hrtimer(cpu_base, base, timer, &basenow, flags);  in __hrtimer_run_queues()
2029 static enum hrtimer_restart hrtimer_wakeup(struct hrtimer *timer)  in hrtimer_wakeup()  argument
2032 		container_of(timer, struct hrtimer_sleeper, timer);  in hrtimer_wakeup()
2060 	if (IS_ENABLED(CONFIG_PREEMPT_RT) && sl->timer.is_hard)  in hrtimer_sleeper_start_expires()
2063 	hrtimer_start_expires(&sl->timer, mode);  in hrtimer_sleeper_start_expires()
2094 	__hrtimer_init(&sl->timer, clock_id, mode);  in __hrtimer_init_sleeper()
2095 	sl->timer.function = hrtimer_wakeup;  in __hrtimer_init_sleeper()
2108 	debug_init_on_stack(&sl->timer, clock_id, mode);  in hrtimer_setup_sleeper_on_stack()
2143 		hrtimer_cancel(&t->timer);  in do_nanosleep()
2155 		ktime_t rem = hrtimer_expires_remaining(&t->timer);  in do_nanosleep()
2173 	hrtimer_set_expires_tv64(&t.timer, restart->nanosleep.expires);  in hrtimer_nanosleep_restart()
2175 	destroy_hrtimer_on_stack(&t.timer);  in hrtimer_nanosleep_restart()
2187 	hrtimer_set_expires_range_ns(&t.timer, rqtp, current->timer_slack_ns);  in hrtimer_nanosleep()
2199 	restart->nanosleep.clockid = t.timer.base->clockid;  in hrtimer_nanosleep()
2200 	restart->nanosleep.expires = hrtimer_get_expires_tv64(&t.timer);  in hrtimer_nanosleep()
2203 	destroy_hrtimer_on_stack(&t.timer);  in hrtimer_nanosleep()
2292 	struct hrtimer *timer;  in migrate_hrtimer_list()  local
2296 		timer = container_of(node, struct hrtimer, node);  in migrate_hrtimer_list()
2297 		BUG_ON(hrtimer_callback_running(timer));  in migrate_hrtimer_list()
2298 		debug_deactivate(timer);  in migrate_hrtimer_list()
2305 		__remove_hrtimer(timer, old_base, HRTIMER_STATE_ENQUEUED, 0);  in migrate_hrtimer_list()
2306 		timer->base = new_base;  in migrate_hrtimer_list()
2315 		enqueue_hrtimer(timer, new_base, HRTIMER_MODE_ABS);  in migrate_hrtimer_list()