254 	u64 now, state_start;  in get_recent_times()  local
264 		now = cpu_clock(cpu);  in get_recent_times()
283 			times[s] += now - state_start;  in get_recent_times()
369 static u64 update_averages(struct psi_group *group, u64 now)  in update_averages()  argument
378 	if (now - expires >= psi_period)  in update_averages()
379 		missed_periods = div_u64(now - expires, psi_period);  in update_averages()
389 	period = now - (group->avg_last_update + (missed_periods * psi_period));  in update_averages()
390 	group->avg_last_update = now;  in update_averages()
428 	u64 now;  in psi_avgs_work()  local
435 	now = sched_clock();  in psi_avgs_work()
446 	if (now >= group->avg_next_update)  in psi_avgs_work()
447 		group->avg_next_update = update_averages(group, now);  in psi_avgs_work()
451 				group->avg_next_update - now) + 1);  in psi_avgs_work()
458 static void window_reset(struct psi_window *win, u64 now, u64 value,  in window_reset()  argument
461 	win->start_time = now;  in window_reset()
477 static u64 window_update(struct psi_window *win, u64 now, u64 value)  in window_update()  argument
482 	elapsed = now - win->start_time;  in window_update()
492 		window_reset(win, now, value, growth);  in window_update()
503 static void init_triggers(struct psi_group *group, u64 now)  in init_triggers()  argument
508 		window_reset(&t->win, now,  in init_triggers()
512 	group->polling_next_update = now + group->poll_min_period;  in init_triggers()
515 static u64 update_triggers(struct psi_group *group, u64 now)  in update_triggers()  argument
541 		growth = window_update(&t->win, now, total[t->state]);  in update_triggers()
546 		if (now < t->last_event_time + t->win.size)  in update_triggers()
552 		t->last_event_time = now;  in update_triggers()
559 	return now + group->poll_min_period;  in update_triggers()
592 	u64 now;  in psi_poll_work()  local
596 	now = sched_clock();  in psi_poll_work()
602 		if (now > group->polling_until)  in psi_poll_work()
603 			init_triggers(group, now);  in psi_poll_work()
610 		group->polling_until = now +  in psi_poll_work()
614 	if (now > group->polling_until) {  in psi_poll_work()
619 	if (now >= group->polling_next_update)  in psi_poll_work()
620 		group->polling_next_update = update_triggers(group, now);  in psi_poll_work()
623 		nsecs_to_jiffies(group->polling_next_update - now) + 1);  in psi_poll_work()
655 static void record_times(struct psi_group_cpu *groupc, u64 now)  in record_times()  argument
659 	delta = now - groupc->state_start;  in record_times()
660 	groupc->state_start = now;  in record_times()
685 			     unsigned int clear, unsigned int set, u64 now,  in psi_group_change()  argument
705 	record_times(groupc, now);  in psi_group_change()
798 	u64 now;  in psi_task_change()  local
805 	now = cpu_clock(cpu);  in psi_task_change()
818 		psi_group_change(group, cpu, clear, set, now, wake_clock);  in psi_task_change()
827 	u64 now = cpu_clock(cpu);  in psi_task_switch()  local
849 			psi_group_change(group, cpu, 0, TSK_ONCPU, now, true);  in psi_task_switch()
871 			psi_group_change(group, cpu, clear, set, now, true);  in psi_task_switch()
880 				psi_group_change(group, cpu, clear, set, now, true);  in psi_task_switch()
965 	/* All triggers must be removed by now */  in psi_cgroup_free()
1040 	u64 now;  in psi_show()  local
1047 	now = sched_clock();  in psi_show()
1049 	if (now >= group->avg_next_update)  in psi_show()
1050 		group->avg_next_update = update_averages(group, now);  in psi_show()