linux-master/block/blk-throttle.c

439 	unsigned long max_expire = jiffies + 8 * sq_to_td(sq)->throtl_slice;
451 	throtl_log(sq, "schedule timer. delay=%lu jiffies=%lu",
452 		   expires - jiffies, jiffies);
483 	if (force || time_after(sq->first_pending_disptime, jiffies)) {
509 	tg->slice_end[rw] = jiffies + tg->td->throtl_slice;
511 		   "[%c] new slice with credit start=%lu end=%lu jiffies=%lu",
513 		   tg->slice_end[rw], jiffies);
521 	tg->slice_start[rw] = jiffies;
522 	tg->slice_end[rw] = jiffies + tg->td->throtl_slice;
529 		   "[%c] new slice start=%lu end=%lu jiffies=%lu",
531 		   tg->slice_end[rw], jiffies);
545 		   "[%c] extend slice start=%lu end=%lu jiffies=%lu",
547 		   tg->slice_end[rw], jiffies);
553 	if (time_in_range(jiffies, tg->slice_start[rw], tg->slice_end[rw]))
619 	throtl_set_slice_end(tg, rw, jiffies + tg->td->throtl_slice);
621 	time_elapsed = rounddown(jiffies - tg->slice_start[rw],
649 		   "[%c] trim slice nr=%lu bytes=%lld io=%d start=%lu end=%lu jiffies=%lu",
652 		   jiffies);
657 	unsigned long jiffy_elapsed = jiffies - tg->slice_start[rw];
701 	jiffy_elapsed = jiffies - tg->slice_start[rw];
729 	jiffy_elapsed = jiffy_elapsed_rnd = jiffies - tg->slice_start[rw];
758  * of jiffies to wait before this bio is with-in IO rate and can be dispatched
796 		    jiffies + tg->td->throtl_slice))
798 				jiffies + tg->td->throtl_slice);
814 	if (time_before(tg->slice_end[rw], jiffies + max_wait))
815 		throtl_extend_slice(tg, rw, jiffies + max_wait);
883 	disptime = jiffies + min_wait;
995 		if (time_before(jiffies, tg->disptime))
1594 		throtl_schedule_pending_timer(sq, jiffies + 1);
1617 			tg->last_low_overflow_time[rw] = jiffies;
1624 			tg->last_low_overflow_time[rw] = jiffies;
1666 	tg->last_low_overflow_time[rw] = jiffies;