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()
603 		if (tg->bps[READ][LIMIT_LOW] || tg->bps[WRITE][LIMIT_LOW] ||  in blk_throtl_update_limit_valid()
604 		    tg->iops[READ][LIMIT_LOW] || tg->iops[WRITE][LIMIT_LOW]) {  in blk_throtl_update_limit_valid()
619 	tg->bps[READ][LIMIT_LOW] = 0;  in throtl_pd_offline()
621 	tg->iops[READ][LIMIT_LOW] = 0;  in throtl_pd_offline()
791 		   rw == READ ? 'R' : 'W', tg->slice_start[rw],  in throtl_start_new_slice_with_credit()
806 		   rw == READ ? 'R' : 'W', tg->slice_start[rw],  in throtl_start_new_slice()
822 		   rw == READ ? 'R' : 'W', tg->slice_start[rw],  in throtl_extend_slice()
891 		   rw == READ ? 'R' : 'W', nr_slices, bytes_trim, io_trim,  in throtl_trim_slice()
1115 	bio = throtl_peek_queued(&sq->queued[READ]);  in tg_update_disptime()
1197 	while ((bio = throtl_peek_queued(&sq->queued[READ])) &&  in throtl_dispatch_tg()
1290 			   sq->nr_queued[READ] + sq->nr_queued[WRITE],  in throtl_pending_timer_fn()
1291 			   sq->nr_queued[READ], sq->nr_queued[WRITE]);  in throtl_pending_timer_fn()
1352 	for (rw = READ; rw <= WRITE; rw++)  in blk_throtl_dispatch_work_fn()
1409 		   tg_bps_limit(tg, READ), tg_bps_limit(tg, WRITE),  in tg_conf_updated()
1410 		   tg_iops_limit(tg, READ), tg_iops_limit(tg, WRITE));  in tg_conf_updated()
1448 	throtl_start_new_slice(tg, READ);  in tg_conf_updated()
1531 		.private = offsetof(struct throtl_grp, bps[READ][LIMIT_MAX]),
1543 		.private = offsetof(struct throtl_grp, iops[READ][LIMIT_MAX]),
1598 	if (tg->bps_conf[READ][off] == bps_dft &&  in tg_prfill_limit()
1600 	    tg->iops_conf[READ][off] == iops_dft &&  in tg_prfill_limit()
1607 	if (tg->bps_conf[READ][off] != U64_MAX)  in tg_prfill_limit()
1609 			tg->bps_conf[READ][off]);  in tg_prfill_limit()
1613 	if (tg->iops_conf[READ][off] != UINT_MAX)  in tg_prfill_limit()
1615 			tg->iops_conf[READ][off]);  in tg_prfill_limit()
1664 	v[0] = tg->bps_conf[READ][index];  in tg_set_limit()
1666 	v[2] = tg->iops_conf[READ][index];  in tg_set_limit()
1710 	tg->bps_conf[READ][index] = v[0];  in tg_set_limit()
1712 	tg->iops_conf[READ][index] = v[2];  in tg_set_limit()
1716 		tg->bps[READ][index] = v[0];  in tg_set_limit()
1718 		tg->iops[READ][index] = v[2];  in tg_set_limit()
1721 	tg->bps[READ][LIMIT_LOW] = min(tg->bps_conf[READ][LIMIT_LOW],  in tg_set_limit()
1722 		tg->bps_conf[READ][LIMIT_MAX]);  in tg_set_limit()
1725 	tg->iops[READ][LIMIT_LOW] = min(tg->iops_conf[READ][LIMIT_LOW],  in tg_set_limit()
1726 		tg->iops_conf[READ][LIMIT_MAX]);  in tg_set_limit()
1733 	if (!(tg->bps[READ][LIMIT_LOW] || tg->iops[READ][LIMIT_LOW] ||  in tg_set_limit()
1737 		tg->bps[READ][LIMIT_LOW] = 0;  in tg_set_limit()
1739 		tg->iops[READ][LIMIT_LOW] = 0;  in tg_set_limit()
1804 	if (tg->bps[READ][LIMIT_LOW] || tg->iops[READ][LIMIT_LOW])  in __tg_last_low_overflow_time()
1805 		rtime = tg->last_low_overflow_time[READ];  in __tg_last_low_overflow_time()
1828 		if (!parent->bps[READ][LIMIT_LOW] &&  in tg_last_low_overflow_time()
1829 		    !parent->iops[READ][LIMIT_LOW] &&  in tg_last_low_overflow_time()
1874 	read_limit = tg->bps[READ][LIMIT_LOW] || tg->iops[READ][LIMIT_LOW];  in throtl_tg_can_upgrade()
1878 	if (read_limit && sq->nr_queued[READ] &&  in throtl_tg_can_upgrade()
1882 	    (!read_limit || sq->nr_queued[READ]))  in throtl_tg_can_upgrade()
2043 	if (tg->bps[READ][LIMIT_LOW]) {  in throtl_downgrade_check()
2044 		bps = tg->last_bytes_disp[READ] * HZ;  in throtl_downgrade_check()
2046 		if (bps >= tg->bps[READ][LIMIT_LOW])  in throtl_downgrade_check()
2047 			tg->last_low_overflow_time[READ] = now;  in throtl_downgrade_check()
2057 	if (tg->iops[READ][LIMIT_LOW]) {  in throtl_downgrade_check()
2058 		tg->last_io_disp[READ] += atomic_xchg(&tg->last_io_split_cnt[READ], 0);  in throtl_downgrade_check()
2059 		iops = tg->last_io_disp[READ] * HZ / elapsed_time;  in throtl_downgrade_check()
2060 		if (iops >= tg->iops[READ][LIMIT_LOW])  in throtl_downgrade_check()
2061 			tg->last_low_overflow_time[READ] = now;  in throtl_downgrade_check()
2078 	tg->last_bytes_disp[READ] = 0;  in throtl_downgrade_check()
2080 	tg->last_io_disp[READ] = 0;  in throtl_downgrade_check()
2116 	for (rw = READ; rw <= WRITE; rw++) {  in throtl_update_latency_buckets()
2147 	for (rw = READ; rw <= WRITE; rw++) {  in throtl_update_latency_buckets()
2173 			td->avg_buckets[READ][i].latency,  in throtl_update_latency_buckets()
2174 			td->avg_buckets[READ][i].valid,  in throtl_update_latency_buckets()
2287 		   rw == READ ? 'R' : 'W',  in blk_throtl_bio()
2291 		   sq->nr_queued[READ], sq->nr_queued[WRITE]);  in blk_throtl_bio()
2415 	td->latency_buckets[READ] = __alloc_percpu(sizeof(struct latency_bucket) *  in blk_throtl_init()
2417 	if (!td->latency_buckets[READ]) {  in blk_throtl_init()
2424 		free_percpu(td->latency_buckets[READ]);  in blk_throtl_init()
2443 		free_percpu(td->latency_buckets[READ]);  in blk_throtl_init()
2456 	free_percpu(q->td->latency_buckets[READ]);  in blk_throtl_exit()
2476 			td->avg_buckets[READ][i].latency = DFL_HD_BASELINE_LATENCY;  in blk_throtl_register_queue()