509 	for (rw = READ; rw <= WRITE; rw++) {  in throtl_pd_alloc()
515 	tg->bps[READ][LIMIT_MAX] = U64_MAX;  in throtl_pd_alloc()
517 	tg->iops[READ][LIMIT_MAX] = UINT_MAX;  in throtl_pd_alloc()
519 	tg->bps_conf[READ][LIMIT_MAX] = U64_MAX;  in throtl_pd_alloc()
521 	tg->iops_conf[READ][LIMIT_MAX] = UINT_MAX;  in throtl_pd_alloc()
576 	for (rw = READ; rw <= WRITE; rw++)  in tg_update_has_rules()
604 		if (tg->bps[READ][LIMIT_LOW] || tg->bps[WRITE][LIMIT_LOW] ||  in blk_throtl_update_limit_valid()
605 		    tg->iops[READ][LIMIT_LOW] || tg->iops[WRITE][LIMIT_LOW]) {  in blk_throtl_update_limit_valid()
625 	tg->bps[READ][LIMIT_LOW] = 0;  in throtl_pd_offline()
627 	tg->iops[READ][LIMIT_LOW] = 0;  in throtl_pd_offline()
797 		   rw == READ ? 'R' : 'W', tg->slice_start[rw],  in throtl_start_new_slice_with_credit()
812 		   rw == READ ? 'R' : 'W', tg->slice_start[rw],  in throtl_start_new_slice()
828 		   rw == READ ? 'R' : 'W', tg->slice_start[rw],  in throtl_extend_slice()
897 		   rw == READ ? 'R' : 'W', nr_slices, bytes_trim, io_trim,  in throtl_trim_slice()
1123 	bio = throtl_peek_queued(&sq->queued[READ]);  in tg_update_disptime()
1205 	while ((bio = throtl_peek_queued(&sq->queued[READ])) &&  in throtl_dispatch_tg()
1298 			   sq->nr_queued[READ] + sq->nr_queued[WRITE],  in throtl_pending_timer_fn()
1299 			   sq->nr_queued[READ], sq->nr_queued[WRITE]);  in throtl_pending_timer_fn()
1360 	for (rw = READ; rw <= WRITE; rw++)  in blk_throtl_dispatch_work_fn()
1417 		   tg_bps_limit(tg, READ), tg_bps_limit(tg, WRITE),  in tg_conf_updated()
1418 		   tg_iops_limit(tg, READ), tg_iops_limit(tg, WRITE));  in tg_conf_updated()
1456 	throtl_start_new_slice(tg, READ);  in tg_conf_updated()
1539 		.private = offsetof(struct throtl_grp, bps[READ][LIMIT_MAX]),
1551 		.private = offsetof(struct throtl_grp, iops[READ][LIMIT_MAX]),
1606 	if (tg->bps_conf[READ][off] == bps_dft &&  in tg_prfill_limit()
1608 	    tg->iops_conf[READ][off] == iops_dft &&  in tg_prfill_limit()
1615 	if (tg->bps_conf[READ][off] != U64_MAX)  in tg_prfill_limit()
1617 			tg->bps_conf[READ][off]);  in tg_prfill_limit()
1621 	if (tg->iops_conf[READ][off] != UINT_MAX)  in tg_prfill_limit()
1623 			tg->iops_conf[READ][off]);  in tg_prfill_limit()
1672 	v[0] = tg->bps_conf[READ][index];  in tg_set_limit()
1674 	v[2] = tg->iops_conf[READ][index];  in tg_set_limit()
1718 	tg->bps_conf[READ][index] = v[0];  in tg_set_limit()
1720 	tg->iops_conf[READ][index] = v[2];  in tg_set_limit()
1724 		tg->bps[READ][index] = v[0];  in tg_set_limit()
1726 		tg->iops[READ][index] = v[2];  in tg_set_limit()
1729 	tg->bps[READ][LIMIT_LOW] = min(tg->bps_conf[READ][LIMIT_LOW],  in tg_set_limit()
1730 		tg->bps_conf[READ][LIMIT_MAX]);  in tg_set_limit()
1733 	tg->iops[READ][LIMIT_LOW] = min(tg->iops_conf[READ][LIMIT_LOW],  in tg_set_limit()
1734 		tg->iops_conf[READ][LIMIT_MAX]);  in tg_set_limit()
1741 	if (!(tg->bps[READ][LIMIT_LOW] || tg->iops[READ][LIMIT_LOW] ||  in tg_set_limit()
1745 		tg->bps[READ][LIMIT_LOW] = 0;  in tg_set_limit()
1747 		tg->iops[READ][LIMIT_LOW] = 0;  in tg_set_limit()
1812 	if (tg->bps[READ][LIMIT_LOW] || tg->iops[READ][LIMIT_LOW])  in __tg_last_low_overflow_time()
1813 		rtime = tg->last_low_overflow_time[READ];  in __tg_last_low_overflow_time()
1836 		if (!parent->bps[READ][LIMIT_LOW] &&  in tg_last_low_overflow_time()
1837 		    !parent->iops[READ][LIMIT_LOW] &&  in tg_last_low_overflow_time()
1882 	read_limit = tg->bps[READ][LIMIT_LOW] || tg->iops[READ][LIMIT_LOW];  in throtl_tg_can_upgrade()
1886 	if (read_limit && sq->nr_queued[READ] &&  in throtl_tg_can_upgrade()
1890 	    (!read_limit || sq->nr_queued[READ]))  in throtl_tg_can_upgrade()
2051 	if (tg->bps[READ][LIMIT_LOW]) {  in throtl_downgrade_check()
2052 		bps = tg->last_bytes_disp[READ] * HZ;  in throtl_downgrade_check()
2054 		if (bps >= tg->bps[READ][LIMIT_LOW])  in throtl_downgrade_check()
2055 			tg->last_low_overflow_time[READ] = now;  in throtl_downgrade_check()
2065 	if (tg->iops[READ][LIMIT_LOW]) {  in throtl_downgrade_check()
2066 		tg->last_io_disp[READ] += atomic_xchg(&tg->last_io_split_cnt[READ], 0);  in throtl_downgrade_check()
2067 		iops = tg->last_io_disp[READ] * HZ / elapsed_time;  in throtl_downgrade_check()
2068 		if (iops >= tg->iops[READ][LIMIT_LOW])  in throtl_downgrade_check()
2069 			tg->last_low_overflow_time[READ] = now;  in throtl_downgrade_check()
2086 	tg->last_bytes_disp[READ] = 0;  in throtl_downgrade_check()
2088 	tg->last_io_disp[READ] = 0;  in throtl_downgrade_check()
2124 	for (rw = READ; rw <= WRITE; rw++) {  in throtl_update_latency_buckets()
2155 	for (rw = READ; rw <= WRITE; rw++) {  in throtl_update_latency_buckets()
2181 			td->avg_buckets[READ][i].latency,  in throtl_update_latency_buckets()
2182 			td->avg_buckets[READ][i].valid,  in throtl_update_latency_buckets()
2295 		   rw == READ ? 'R' : 'W',  in blk_throtl_bio()
2299 		   sq->nr_queued[READ], sq->nr_queued[WRITE]);  in blk_throtl_bio()
2423 	td->latency_buckets[READ] = __alloc_percpu(sizeof(struct latency_bucket) *  in blk_throtl_init()
2425 	if (!td->latency_buckets[READ]) {  in blk_throtl_init()
2432 		free_percpu(td->latency_buckets[READ]);  in blk_throtl_init()
2451 		free_percpu(td->latency_buckets[READ]);  in blk_throtl_init()
2464 	free_percpu(q->td->latency_buckets[READ]);  in blk_throtl_exit()
2484 			td->avg_buckets[READ][i].latency = DFL_HD_BASELINE_LATENCY;  in blk_throtl_register_queue()