kernel/time/hrtimer.c

219 	ktime_t expires;
237 	expires = ktime_sub(hrtimer_get_expires(timer), new_base->offset);
239 	return expires >= new_base->cpu_base->expires_next;
542  * does not update cpu_base->next_timer/expires.
549 	ktime_t expires;
554 		expires = ktime_sub(base->expires_next, base->offset);
555 		if (expires >= expires_next)
568 			expires = ktime_sub(node->expires, base->offset);
569 			if (expires >= expires_next)
572 		expires_next = expires;
591 	ktime_t expires;
594 		expires = ktime_sub(base->expires_next, base->offset);
595 		if (expires < *expires_next) {
596 			*expires_next = expires;
723 	 * T1 expires 50ms from now
724 	 * T2 expires 5s from now
838  * When a timer is enqueued and expires earlier than the already enqueued
839  * timers, we have to check, whether it expires earlier than the timer for
848 	ktime_t expires = hrtimer_get_expires(timer);
850 	WARN_ON_ONCE(expires < 0);
852 	expires = ktime_sub(expires, base->offset);
857 	if (expires < 0)
858 		expires = 0;
873 		if (!ktime_before(expires, timer_cpu_base->softirq_expires_next))
877 		timer_cpu_base->softirq_expires_next = expires;
879 		if (!ktime_before(expires, timer_cpu_base->expires_next) || !reprogram)
890 	if (expires >= cpu_base->expires_next)
899 	__hrtimer_reprogram(cpu_base, timer, expires);
906 	ktime_t expires;
946 		expires = ktime_sub(next->expires, base->offset);
947 		if (expires < cpu_base->expires_next)
955 		if (expires < cpu_base->softirq_expires_next)
1128 	base->expires_next = next ? next->expires : KTIME_MAX;
1135  * timer is the one which expires next. The caller can disable this by setting
1216 hrtimer_can_update_in_place(struct hrtimer *timer, struct hrtimer_clock_base *base, ktime_t expires)
1222 	if (next && expires > next->expires)
1230 	return expires >= prev->expires;
1235 			     const enum hrtimer_mode mode, ktime_t expires, u64 delta_ns)
1244 		if (hrtimer_can_update_in_place(timer, base, expires)) {
1245 			hrtimer_set_expires_range_ns(timer, expires, delta_ns);
1248 				base->expires_next = expires;
1257 	hrtimer_set_expires_range_ns(timer, expires, delta_ns);
1267 		base->expires_next = expires;
1295 	ktime_t expires = __hrtimer_get_next_event(cpu_base, HRTIMER_ACTIVE_SOFT);
1299 	 * hrtimer expires at the same time as the next hard
1302 	if (expires == KTIME_MAX)
1608 	 * Just relax if the timer expires in hard interrupt context or if
1687 	u64 expires = KTIME_MAX;
1691 		expires = __hrtimer_get_next_event(cpu_base, HRTIMER_ACTIVE_ALL);
1693 	return expires;
1706 	u64 expires = KTIME_MAX;
1711 		return expires;
1715 		expires = hrtimer_bases_next_event_without(cpu_base, exclude, active, KTIME_MAX);
1719 		return expires;
1720 	return hrtimer_bases_next_event_without(cpu_base, exclude, active, expires);
2325 	hrtimer_set_expires(&t.timer, restart->nanosleep.expires);
2351 	restart->nanosleep.expires = hrtimer_get_expires(&t.timer);
2459 		 * expires before the earliest on this CPU, but we run