506 static inline unsigned int timer_get_idx(struct timer_list *timer)  in timer_get_idx()  argument
508 	return (timer->flags & TIMER_ARRAYMASK) >> TIMER_ARRAYSHIFT;  in timer_get_idx()
511 static inline void timer_set_idx(struct timer_list *timer, unsigned int idx)  in timer_set_idx()  argument
513 	timer->flags = (timer->flags & ~TIMER_ARRAYMASK) |  in timer_set_idx()
578 trigger_dyntick_cpu(struct timer_base *base, struct timer_list *timer)  in trigger_dyntick_cpu()  argument
587 	if (timer->flags & TIMER_DEFERRABLE) {  in trigger_dyntick_cpu()
607 static void enqueue_timer(struct timer_base *base, struct timer_list *timer,  in enqueue_timer()  argument
611 	hlist_add_head(&timer->entry, base->vectors + idx);  in enqueue_timer()
613 	timer_set_idx(timer, idx);  in enqueue_timer()
615 	trace_timer_start(timer, timer->expires, timer->flags);  in enqueue_timer()
630 		trigger_dyntick_cpu(base, timer);  in enqueue_timer()
634 static void internal_add_timer(struct timer_base *base, struct timer_list *timer)  in internal_add_timer()  argument
639 	idx = calc_wheel_index(timer->expires, base->clk, &bucket_expiry);  in internal_add_timer()
640 	enqueue_timer(base, timer, idx, bucket_expiry);  in internal_add_timer()
661 		   struct delayed_work, timer, work.func),
663 		   struct kthread_delayed_work, timer, work.func),
668 	struct timer_list *timer = addr;  in timer_debug_hint()  local
672 		if (timer_hints[i].function == timer->function) {  in timer_debug_hint()
679 	return timer->function;  in timer_debug_hint()
684 	struct timer_list *timer = addr;  in timer_is_static_object()  local
686 	return (timer->entry.pprev == NULL &&  in timer_is_static_object()
687 		timer->entry.next == TIMER_ENTRY_STATIC);  in timer_is_static_object()
696 	struct timer_list *timer = addr;  in timer_fixup_init()  local
700 		del_timer_sync(timer);  in timer_fixup_init()
701 		debug_object_init(timer, &timer_debug_descr);  in timer_fixup_init()
721 	struct timer_list *timer = addr;  in timer_fixup_activate()  local
725 		timer_setup(timer, stub_timer, 0);  in timer_fixup_activate()
742 	struct timer_list *timer = addr;  in timer_fixup_free()  local
746 		del_timer_sync(timer);  in timer_fixup_free()
747 		debug_object_free(timer, &timer_debug_descr);  in timer_fixup_free()
760 	struct timer_list *timer = addr;  in timer_fixup_assert_init()  local
764 		timer_setup(timer, stub_timer, 0);  in timer_fixup_assert_init()
781 static inline void debug_timer_init(struct timer_list *timer)  in debug_timer_init()  argument
783 	debug_object_init(timer, &timer_debug_descr);  in debug_timer_init()
786 static inline void debug_timer_activate(struct timer_list *timer)  in debug_timer_activate()  argument
788 	debug_object_activate(timer, &timer_debug_descr);  in debug_timer_activate()
791 static inline void debug_timer_deactivate(struct timer_list *timer)  in debug_timer_deactivate()  argument
793 	debug_object_deactivate(timer, &timer_debug_descr);  in debug_timer_deactivate()
796 static inline void debug_timer_assert_init(struct timer_list *timer)  in debug_timer_assert_init()  argument
798 	debug_object_assert_init(timer, &timer_debug_descr);  in debug_timer_assert_init()
801 static void do_init_timer(struct timer_list *timer,
806 void init_timer_on_stack_key(struct timer_list *timer,  in init_timer_on_stack_key()  argument
811 	debug_object_init_on_stack(timer, &timer_debug_descr);  in init_timer_on_stack_key()
812 	do_init_timer(timer, func, flags, name, key);  in init_timer_on_stack_key()
816 void destroy_timer_on_stack(struct timer_list *timer)  in destroy_timer_on_stack()  argument
818 	debug_object_free(timer, &timer_debug_descr);  in destroy_timer_on_stack()
823 static inline void debug_timer_init(struct timer_list *timer) { }  in debug_timer_init()  argument
824 static inline void debug_timer_activate(struct timer_list *timer) { }  in debug_timer_activate()  argument
825 static inline void debug_timer_deactivate(struct timer_list *timer) { }  in debug_timer_deactivate()  argument
826 static inline void debug_timer_assert_init(struct timer_list *timer) { }  in debug_timer_assert_init()  argument
829 static inline void debug_init(struct timer_list *timer)  in debug_init()  argument
831 	debug_timer_init(timer);  in debug_init()
832 	trace_timer_init(timer);  in debug_init()
835 static inline void debug_deactivate(struct timer_list *timer)  in debug_deactivate()  argument
837 	debug_timer_deactivate(timer);  in debug_deactivate()
838 	trace_timer_cancel(timer);  in debug_deactivate()
841 static inline void debug_assert_init(struct timer_list *timer)  in debug_assert_init()  argument
843 	debug_timer_assert_init(timer);  in debug_assert_init()
846 static void do_init_timer(struct timer_list *timer,  in do_init_timer()  argument
851 	timer->entry.pprev = NULL;  in do_init_timer()
852 	timer->function = func;  in do_init_timer()
855 	timer->flags = flags | raw_smp_processor_id();  in do_init_timer()
856 	lockdep_init_map(&timer->lockdep_map, name, key, 0);  in do_init_timer()
871 void init_timer_key(struct timer_list *timer,  in init_timer_key()  argument
875 	debug_init(timer);  in init_timer_key()
876 	do_init_timer(timer, func, flags, name, key);  in init_timer_key()
880 static inline void detach_timer(struct timer_list *timer, bool clear_pending)  in detach_timer()  argument
882 	struct hlist_node *entry = &timer->entry;  in detach_timer()
884 	debug_deactivate(timer);  in detach_timer()
892 static int detach_if_pending(struct timer_list *timer, struct timer_base *base,  in detach_if_pending()  argument
895 	unsigned idx = timer_get_idx(timer);  in detach_if_pending()
897 	if (!timer_pending(timer))  in detach_if_pending()
900 	if (hlist_is_singular_node(&timer->entry, base->vectors + idx)) {  in detach_if_pending()
905 	detach_timer(timer, clear_pending);  in detach_if_pending()
988 static struct timer_base *lock_timer_base(struct timer_list *timer,  in lock_timer_base()  argument
990 	__acquires(timer->base->lock)  in lock_timer_base()
1001 		tf = READ_ONCE(timer->flags);  in lock_timer_base()
1006 			if (timer->flags == tf)  in lock_timer_base()
1019 __mod_timer(struct timer_list *timer, unsigned long expires, unsigned int options)  in __mod_timer()  argument
1026 	BUG_ON(!timer->function);  in __mod_timer()
1033 	if (!(options & MOD_TIMER_NOTPENDING) && timer_pending(timer)) {  in __mod_timer()
1039 		long diff = timer->expires - expires;  in __mod_timer()
1052 		base = lock_timer_base(timer, &flags);  in __mod_timer()
1055 		if (timer_pending(timer) && (options & MOD_TIMER_REDUCE) &&  in __mod_timer()
1056 		    time_before_eq(timer->expires, expires)) {  in __mod_timer()
1069 		if (idx == timer_get_idx(timer)) {  in __mod_timer()
1071 				timer->expires = expires;  in __mod_timer()
1072 			else if (time_after(timer->expires, expires))  in __mod_timer()
1073 				timer->expires = expires;  in __mod_timer()
1078 		base = lock_timer_base(timer, &flags);  in __mod_timer()
1082 	ret = detach_if_pending(timer, base, false);  in __mod_timer()
1086 	new_base = get_target_base(base, timer->flags);  in __mod_timer()
1096 		if (likely(base->running_timer != timer)) {  in __mod_timer()
1098 			timer->flags |= TIMER_MIGRATING;  in __mod_timer()
1103 			WRITE_ONCE(timer->flags,  in __mod_timer()
1104 				   (timer->flags & ~TIMER_BASEMASK) | base->cpu);  in __mod_timer()
1109 	debug_timer_activate(timer);  in __mod_timer()
1111 	timer->expires = expires;  in __mod_timer()
1119 		enqueue_timer(base, timer, idx, bucket_expiry);  in __mod_timer()
1121 		internal_add_timer(base, timer);  in __mod_timer()
1139 int mod_timer_pending(struct timer_list *timer, unsigned long expires)  in mod_timer_pending()  argument
1141 	return __mod_timer(timer, expires, MOD_TIMER_PENDING_ONLY);  in mod_timer_pending()
1165 int mod_timer(struct timer_list *timer, unsigned long expires)  in mod_timer()  argument
1167 	return __mod_timer(timer, expires, 0);  in mod_timer()
1180 int timer_reduce(struct timer_list *timer, unsigned long expires)  in timer_reduce()  argument
1182 	return __mod_timer(timer, expires, MOD_TIMER_REDUCE);  in timer_reduce()
1200 void add_timer(struct timer_list *timer)  in add_timer()  argument
1202 	BUG_ON(timer_pending(timer));  in add_timer()
1203 	__mod_timer(timer, timer->expires, MOD_TIMER_NOTPENDING);  in add_timer()
1214 void add_timer_on(struct timer_list *timer, int cpu)  in add_timer_on()  argument
1219 	BUG_ON(timer_pending(timer) || !timer->function);  in add_timer_on()
1221 	new_base = get_timer_cpu_base(timer->flags, cpu);  in add_timer_on()
1228 	base = lock_timer_base(timer, &flags);  in add_timer_on()
1230 		timer->flags |= TIMER_MIGRATING;  in add_timer_on()
1235 		WRITE_ONCE(timer->flags,  in add_timer_on()
1236 			   (timer->flags & ~TIMER_BASEMASK) | cpu);  in add_timer_on()
1240 	debug_timer_activate(timer);  in add_timer_on()
1241 	internal_add_timer(base, timer);  in add_timer_on()
1257 int del_timer(struct timer_list *timer)  in del_timer()  argument
1263 	debug_assert_init(timer);  in del_timer()
1265 	if (timer_pending(timer)) {  in del_timer()
1266 		base = lock_timer_base(timer, &flags);  in del_timer()
1267 		ret = detach_if_pending(timer, base, true);  in del_timer()
1282 int try_to_del_timer_sync(struct timer_list *timer)  in try_to_del_timer_sync()  argument
1288 	debug_assert_init(timer);  in try_to_del_timer_sync()
1290 	base = lock_timer_base(timer, &flags);  in try_to_del_timer_sync()
1292 	if (base->running_timer != timer)  in try_to_del_timer_sync()
1293 		ret = detach_if_pending(timer, base, true);  in try_to_del_timer_sync()
1344 static void del_timer_wait_running(struct timer_list *timer)  in del_timer_wait_running()  argument
1348 	tf = READ_ONCE(timer->flags);  in del_timer_wait_running()
1371 static inline void del_timer_wait_running(struct timer_list *timer) { }  in del_timer_wait_running()  argument
1411 int del_timer_sync(struct timer_list *timer)  in del_timer_sync()  argument
1423 	lock_map_acquire(&timer->lockdep_map);  in del_timer_sync()
1424 	lock_map_release(&timer->lockdep_map);  in del_timer_sync()
1431 	WARN_ON(in_irq() && !(timer->flags & TIMER_IRQSAFE));  in del_timer_sync()
1437 	if (IS_ENABLED(CONFIG_PREEMPT_RT) && !(timer->flags & TIMER_IRQSAFE))  in del_timer_sync()
1441 		ret = try_to_del_timer_sync(timer);  in del_timer_sync()
1444 			del_timer_wait_running(timer);  in del_timer_sync()
1454 static void call_timer_fn(struct timer_list *timer,  in call_timer_fn()  argument
1470 	lockdep_copy_map(&lockdep_map, &timer->lockdep_map);  in call_timer_fn()
1479 	trace_timer_expire_entry(timer, baseclk);  in call_timer_fn()
1480 	fn(timer);  in call_timer_fn()
1481 	trace_timer_expire_exit(timer);  in call_timer_fn()
1508 		struct timer_list *timer;  in expire_timers()  local
1511 		timer = hlist_entry(head->first, struct timer_list, entry);  in expire_timers()
1513 		base->running_timer = timer;  in expire_timers()
1514 		detach_timer(timer, true);  in expire_timers()
1516 		fn = timer->function;  in expire_timers()
1518 		if (timer->flags & TIMER_IRQSAFE) {  in expire_timers()
1520 			call_timer_fn(timer, fn, baseclk);  in expire_timers()
1525 			call_timer_fn(timer, fn, baseclk);  in expire_timers()
1860 	struct timer_list timer;  member
1866 	struct process_timer *timeout = from_timer(timeout, t, timer);  in process_timeout()
1904 	struct process_timer timer;  in schedule_timeout()  local
1938 	timer.task = current;  in schedule_timeout()
1939 	timer_setup_on_stack(&timer.timer, process_timeout, 0);  in schedule_timeout()
1940 	__mod_timer(&timer.timer, expire, MOD_TIMER_NOTPENDING);  in schedule_timeout()
1942 	del_singleshot_timer_sync(&timer.timer);  in schedule_timeout()
1945 	destroy_timer_on_stack(&timer.timer);  in schedule_timeout()
1993 	struct timer_list *timer;  in migrate_timer_list()  local
1997 		timer = hlist_entry(head->first, struct timer_list, entry);  in migrate_timer_list()
1998 		detach_timer(timer, false);  in migrate_timer_list()
1999 		timer->flags = (timer->flags & ~TIMER_BASEMASK) | cpu;  in migrate_timer_list()
2000 		internal_add_timer(new_base, timer);  in migrate_timer_list()