552 static inline unsigned int timer_get_idx(struct timer_list *timer)  in timer_get_idx()  argument
554 	return (timer->flags & TIMER_ARRAYMASK) >> TIMER_ARRAYSHIFT;  in timer_get_idx()
557 static inline void timer_set_idx(struct timer_list *timer, unsigned int idx)  in timer_set_idx()  argument
559 	timer->flags = (timer->flags & ~TIMER_ARRAYMASK) |  in timer_set_idx()
623 trigger_dyntick_cpu(struct timer_base *base, struct timer_list *timer)  in trigger_dyntick_cpu()  argument
632 	if (!is_timers_nohz_active() || timer->flags & TIMER_DEFERRABLE)  in trigger_dyntick_cpu()
644 		WARN_ON_ONCE(!(timer->flags & TIMER_PINNED ||  in trigger_dyntick_cpu()
655 static void enqueue_timer(struct timer_base *base, struct timer_list *timer,  in enqueue_timer()  argument
659 	hlist_add_head(&timer->entry, base->vectors + idx);  in enqueue_timer()
661 	timer_set_idx(timer, idx);  in enqueue_timer()
663 	trace_timer_start(timer, bucket_expiry);  in enqueue_timer()
678 		trigger_dyntick_cpu(base, timer);  in enqueue_timer()
682 static void internal_add_timer(struct timer_base *base, struct timer_list *timer)  in internal_add_timer()  argument
687 	idx = calc_wheel_index(timer->expires, base->clk, &bucket_expiry);  in internal_add_timer()
688 	enqueue_timer(base, timer, idx, bucket_expiry);  in internal_add_timer()
709 		   struct delayed_work, timer, work.func),
711 		   struct kthread_delayed_work, timer, work.func),
716 	struct timer_list *timer = addr;  in timer_debug_hint()  local
720 		if (timer_hints[i].function == timer->function) {  in timer_debug_hint()
727 	return timer->function;  in timer_debug_hint()
732 	struct timer_list *timer = addr;  in timer_is_static_object()  local
734 	return (timer->entry.pprev == NULL &&  in timer_is_static_object()
735 		timer->entry.next == TIMER_ENTRY_STATIC);  in timer_is_static_object()
744 	struct timer_list *timer = addr;  in timer_fixup_init()  local
748 		del_timer_sync(timer);  in timer_fixup_init()
749 		debug_object_init(timer, &timer_debug_descr);  in timer_fixup_init()
769 	struct timer_list *timer = addr;  in timer_fixup_activate()  local
773 		timer_setup(timer, stub_timer, 0);  in timer_fixup_activate()
790 	struct timer_list *timer = addr;  in timer_fixup_free()  local
794 		del_timer_sync(timer);  in timer_fixup_free()
795 		debug_object_free(timer, &timer_debug_descr);  in timer_fixup_free()
808 	struct timer_list *timer = addr;  in timer_fixup_assert_init()  local
812 		timer_setup(timer, stub_timer, 0);  in timer_fixup_assert_init()
829 static inline void debug_timer_init(struct timer_list *timer)  in debug_timer_init()  argument
831 	debug_object_init(timer, &timer_debug_descr);  in debug_timer_init()
834 static inline void debug_timer_activate(struct timer_list *timer)  in debug_timer_activate()  argument
836 	debug_object_activate(timer, &timer_debug_descr);  in debug_timer_activate()
839 static inline void debug_timer_deactivate(struct timer_list *timer)  in debug_timer_deactivate()  argument
841 	debug_object_deactivate(timer, &timer_debug_descr);  in debug_timer_deactivate()
844 static inline void debug_timer_assert_init(struct timer_list *timer)  in debug_timer_assert_init()  argument
846 	debug_object_assert_init(timer, &timer_debug_descr);  in debug_timer_assert_init()
849 static void do_init_timer(struct timer_list *timer,
854 void init_timer_on_stack_key(struct timer_list *timer,  in init_timer_on_stack_key()  argument
859 	debug_object_init_on_stack(timer, &timer_debug_descr);  in init_timer_on_stack_key()
860 	do_init_timer(timer, func, flags, name, key);  in init_timer_on_stack_key()
864 void destroy_timer_on_stack(struct timer_list *timer)  in destroy_timer_on_stack()  argument
866 	debug_object_free(timer, &timer_debug_descr);  in destroy_timer_on_stack()
871 static inline void debug_timer_init(struct timer_list *timer) { }  in debug_timer_init()  argument
872 static inline void debug_timer_activate(struct timer_list *timer) { }  in debug_timer_activate()  argument
873 static inline void debug_timer_deactivate(struct timer_list *timer) { }  in debug_timer_deactivate()  argument
874 static inline void debug_timer_assert_init(struct timer_list *timer) { }  in debug_timer_assert_init()  argument
877 static inline void debug_init(struct timer_list *timer)  in debug_init()  argument
879 	debug_timer_init(timer);  in debug_init()
880 	trace_timer_init(timer);  in debug_init()
883 static inline void debug_deactivate(struct timer_list *timer)  in debug_deactivate()  argument
885 	debug_timer_deactivate(timer);  in debug_deactivate()
886 	trace_timer_cancel(timer);  in debug_deactivate()
889 static inline void debug_assert_init(struct timer_list *timer)  in debug_assert_init()  argument
891 	debug_timer_assert_init(timer);  in debug_assert_init()
894 static void do_init_timer(struct timer_list *timer,  in do_init_timer()  argument
899 	timer->entry.pprev = NULL;  in do_init_timer()
900 	timer->function = func;  in do_init_timer()
903 	timer->flags = flags | raw_smp_processor_id();  in do_init_timer()
904 	lockdep_init_map(&timer->lockdep_map, name, key, 0);  in do_init_timer()
919 void init_timer_key(struct timer_list *timer,  in init_timer_key()  argument
923 	debug_init(timer);  in init_timer_key()
924 	do_init_timer(timer, func, flags, name, key);  in init_timer_key()
928 static inline void detach_timer(struct timer_list *timer, bool clear_pending)  in detach_timer()  argument
930 	struct hlist_node *entry = &timer->entry;  in detach_timer()
932 	debug_deactivate(timer);  in detach_timer()
940 static int detach_if_pending(struct timer_list *timer, struct timer_base *base,  in detach_if_pending()  argument
943 	unsigned idx = timer_get_idx(timer);  in detach_if_pending()
945 	if (!timer_pending(timer))  in detach_if_pending()
948 	if (hlist_is_singular_node(&timer->entry, base->vectors + idx)) {  in detach_if_pending()
953 	detach_timer(timer, clear_pending);  in detach_if_pending()
1034 static struct timer_base *lock_timer_base(struct timer_list *timer,  in lock_timer_base()  argument
1036 	__acquires(timer->base->lock)  in lock_timer_base()
1047 		tf = READ_ONCE(timer->flags);  in lock_timer_base()
1052 			if (timer->flags == tf)  in lock_timer_base()
1065 __mod_timer(struct timer_list *timer, unsigned long expires, unsigned int options)  in __mod_timer()  argument
1072 	debug_assert_init(timer);  in __mod_timer()
1079 	if (!(options & MOD_TIMER_NOTPENDING) && timer_pending(timer)) {  in __mod_timer()
1085 		long diff = timer->expires - expires;  in __mod_timer()
1098 		base = lock_timer_base(timer, &flags);  in __mod_timer()
1104 		if (!timer->function)  in __mod_timer()
1109 		if (timer_pending(timer) && (options & MOD_TIMER_REDUCE) &&  in __mod_timer()
1110 		    time_before_eq(timer->expires, expires)) {  in __mod_timer()
1123 		if (idx == timer_get_idx(timer)) {  in __mod_timer()
1125 				timer->expires = expires;  in __mod_timer()
1126 			else if (time_after(timer->expires, expires))  in __mod_timer()
1127 				timer->expires = expires;  in __mod_timer()
1132 		base = lock_timer_base(timer, &flags);  in __mod_timer()
1138 		if (!timer->function)  in __mod_timer()
1144 	ret = detach_if_pending(timer, base, false);  in __mod_timer()
1148 	new_base = get_timer_this_cpu_base(timer->flags);  in __mod_timer()
1158 		if (likely(base->running_timer != timer)) {  in __mod_timer()
1160 			timer->flags |= TIMER_MIGRATING;  in __mod_timer()
1165 			WRITE_ONCE(timer->flags,  in __mod_timer()
1166 				   (timer->flags & ~TIMER_BASEMASK) | base->cpu);  in __mod_timer()
1171 	debug_timer_activate(timer);  in __mod_timer()
1173 	timer->expires = expires;  in __mod_timer()
1181 		enqueue_timer(base, timer, idx, bucket_expiry);  in __mod_timer()
1183 		internal_add_timer(base, timer);  in __mod_timer()
1207 int mod_timer_pending(struct timer_list *timer, unsigned long expires)  in mod_timer_pending()  argument
1209 	return __mod_timer(timer, expires, MOD_TIMER_PENDING_ONLY);  in mod_timer_pending()
1240 int mod_timer(struct timer_list *timer, unsigned long expires)  in mod_timer()  argument
1242 	return __mod_timer(timer, expires, 0);  in mod_timer()
1266 int timer_reduce(struct timer_list *timer, unsigned long expires)  in timer_reduce()  argument
1268 	return __mod_timer(timer, expires, MOD_TIMER_REDUCE);  in timer_reduce()
1292 void add_timer(struct timer_list *timer)  in add_timer()  argument
1294 	if (WARN_ON_ONCE(timer_pending(timer)))  in add_timer()
1296 	__mod_timer(timer, timer->expires, MOD_TIMER_NOTPENDING);  in add_timer()
1308 void add_timer_local(struct timer_list *timer)  in add_timer_local()  argument
1310 	if (WARN_ON_ONCE(timer_pending(timer)))  in add_timer_local()
1312 	timer->flags |= TIMER_PINNED;  in add_timer_local()
1313 	__mod_timer(timer, timer->expires, MOD_TIMER_NOTPENDING);  in add_timer_local()
1325 void add_timer_global(struct timer_list *timer)  in add_timer_global()  argument
1327 	if (WARN_ON_ONCE(timer_pending(timer)))  in add_timer_global()
1329 	timer->flags &= ~TIMER_PINNED;  in add_timer_global()
1330 	__mod_timer(timer, timer->expires, MOD_TIMER_NOTPENDING);  in add_timer_global()
1346 void add_timer_on(struct timer_list *timer, int cpu)  in add_timer_on()  argument
1351 	debug_assert_init(timer);  in add_timer_on()
1353 	if (WARN_ON_ONCE(timer_pending(timer)))  in add_timer_on()
1357 	timer->flags |= TIMER_PINNED;  in add_timer_on()
1359 	new_base = get_timer_cpu_base(timer->flags, cpu);  in add_timer_on()
1366 	base = lock_timer_base(timer, &flags);  in add_timer_on()
1371 	if (!timer->function)  in add_timer_on()
1375 		timer->flags |= TIMER_MIGRATING;  in add_timer_on()
1380 		WRITE_ONCE(timer->flags,  in add_timer_on()
1381 			   (timer->flags & ~TIMER_BASEMASK) | cpu);  in add_timer_on()
1385 	debug_timer_activate(timer);  in add_timer_on()
1386 	internal_add_timer(base, timer);  in add_timer_on()
1407 static int __timer_delete(struct timer_list *timer, bool shutdown)  in __timer_delete()  argument
1413 	debug_assert_init(timer);  in __timer_delete()
1426 	if (timer_pending(timer) || shutdown) {  in __timer_delete()
1427 		base = lock_timer_base(timer, &flags);  in __timer_delete()
1428 		ret = detach_if_pending(timer, base, true);  in __timer_delete()
1430 			timer->function = NULL;  in __timer_delete()
1451 int timer_delete(struct timer_list *timer)  in timer_delete()  argument
1453 	return __timer_delete(timer, false);  in timer_delete()
1472 int timer_shutdown(struct timer_list *timer)  in timer_shutdown()  argument
1474 	return __timer_delete(timer, true);  in timer_shutdown()
1498 static int __try_to_del_timer_sync(struct timer_list *timer, bool shutdown)  in __try_to_del_timer_sync()  argument
1504 	debug_assert_init(timer);  in __try_to_del_timer_sync()
1506 	base = lock_timer_base(timer, &flags);  in __try_to_del_timer_sync()
1508 	if (base->running_timer != timer)  in __try_to_del_timer_sync()
1509 		ret = detach_if_pending(timer, base, true);  in __try_to_del_timer_sync()
1511 		timer->function = NULL;  in __try_to_del_timer_sync()
1534 int try_to_del_timer_sync(struct timer_list *timer)  in try_to_del_timer_sync()  argument
1536 	return __try_to_del_timer_sync(timer, false);  in try_to_del_timer_sync()
1585 static void del_timer_wait_running(struct timer_list *timer)  in del_timer_wait_running()  argument
1589 	tf = READ_ONCE(timer->flags);  in del_timer_wait_running()
1612 static inline void del_timer_wait_running(struct timer_list *timer) { }  in del_timer_wait_running()  argument
1637 static int __timer_delete_sync(struct timer_list *timer, bool shutdown)  in __timer_delete_sync()  argument
1649 	lock_map_acquire(&timer->lockdep_map);  in __timer_delete_sync()
1650 	lock_map_release(&timer->lockdep_map);  in __timer_delete_sync()
1657 	WARN_ON(in_hardirq() && !(timer->flags & TIMER_IRQSAFE));  in __timer_delete_sync()
1663 	if (IS_ENABLED(CONFIG_PREEMPT_RT) && !(timer->flags & TIMER_IRQSAFE))  in __timer_delete_sync()
1667 		ret = __try_to_del_timer_sync(timer, shutdown);  in __timer_delete_sync()
1670 			del_timer_wait_running(timer);  in __timer_delete_sync()
1720 int timer_delete_sync(struct timer_list *timer)  in timer_delete_sync()  argument
1722 	return __timer_delete_sync(timer, false);  in timer_delete_sync()
1762 int timer_shutdown_sync(struct timer_list *timer)  in timer_shutdown_sync()  argument
1764 	return __timer_delete_sync(timer, true);  in timer_shutdown_sync()
1768 static void call_timer_fn(struct timer_list *timer,  in call_timer_fn()  argument
1784 	lockdep_copy_map(&lockdep_map, &timer->lockdep_map);  in call_timer_fn()
1793 	trace_timer_expire_entry(timer, baseclk);  in call_timer_fn()
1794 	fn(timer);  in call_timer_fn()
1795 	trace_timer_expire_exit(timer);  in call_timer_fn()
1822 		struct timer_list *timer;  in expire_timers()  local
1825 		timer = hlist_entry(head->first, struct timer_list, entry);  in expire_timers()
1827 		base->running_timer = timer;  in expire_timers()
1828 		detach_timer(timer, true);  in expire_timers()
1830 		fn = timer->function;  in expire_timers()
1838 		if (timer->flags & TIMER_IRQSAFE) {  in expire_timers()
1840 			call_timer_fn(timer, fn, baseclk);  in expire_timers()
1845 			call_timer_fn(timer, fn, baseclk);  in expire_timers()
2534 	struct timer_list timer;  member
2540 	struct process_timer *timeout = from_timer(timeout, t, timer);  in process_timeout()
2578 	struct process_timer timer;  in schedule_timeout()  local
2612 	timer.task = current;  in schedule_timeout()
2613 	timer_setup_on_stack(&timer.timer, process_timeout, 0);  in schedule_timeout()
2614 	__mod_timer(&timer.timer, expire, MOD_TIMER_NOTPENDING);  in schedule_timeout()
2616 	del_timer_sync(&timer.timer);  in schedule_timeout()
2619 	destroy_timer_on_stack(&timer.timer);  in schedule_timeout()
2667 	struct timer_list *timer;  in migrate_timer_list()  local
2671 		timer = hlist_entry(head->first, struct timer_list, entry);  in migrate_timer_list()
2672 		detach_timer(timer, false);  in migrate_timer_list()
2673 		timer->flags = (timer->flags & ~TIMER_BASEMASK) | cpu;  in migrate_timer_list()
2674 		internal_add_timer(new_base, timer);  in migrate_timer_list()