61 static ssize_t queue_requests_show(struct request_queue *q, char *page)  in queue_requests_show()  argument
63 	return queue_var_show(q->nr_requests, page);  in queue_requests_show()
67 queue_requests_store(struct request_queue *q, const char *page, size_t count)  in queue_requests_store()  argument
72 	if (!queue_is_mq(q))  in queue_requests_store()
82 	err = blk_mq_update_nr_requests(q, nr);  in queue_requests_store()
89 static ssize_t queue_ra_show(struct request_queue *q, char *page)  in queue_ra_show()  argument
93 	if (!q->disk)  in queue_ra_show()
95 	ra_kb = q->disk->bdi->ra_pages << (PAGE_SHIFT - 10);  in queue_ra_show()
100 queue_ra_store(struct request_queue *q, const char *page, size_t count)  in queue_ra_store()  argument
105 	if (!q->disk)  in queue_ra_store()
110 	q->disk->bdi->ra_pages = ra_kb >> (PAGE_SHIFT - 10);  in queue_ra_store()
114 static ssize_t queue_max_sectors_show(struct request_queue *q, char *page)  in queue_max_sectors_show()  argument
116 	int max_sectors_kb = queue_max_sectors(q) >> 1;  in queue_max_sectors_show()
121 static ssize_t queue_max_segments_show(struct request_queue *q, char *page)  in queue_max_segments_show()  argument
123 	return queue_var_show(queue_max_segments(q), page);  in queue_max_segments_show()
126 static ssize_t queue_max_discard_segments_show(struct request_queue *q,  in queue_max_discard_segments_show()  argument
129 	return queue_var_show(queue_max_discard_segments(q), page);  in queue_max_discard_segments_show()
132 static ssize_t queue_max_integrity_segments_show(struct request_queue *q, char *page)  in queue_max_integrity_segments_show()  argument
134 	return queue_var_show(q->limits.max_integrity_segments, page);  in queue_max_integrity_segments_show()
137 static ssize_t queue_max_segment_size_show(struct request_queue *q, char *page)  in queue_max_segment_size_show()  argument
139 	return queue_var_show(queue_max_segment_size(q), page);  in queue_max_segment_size_show()
142 static ssize_t queue_logical_block_size_show(struct request_queue *q, char *page)  in queue_logical_block_size_show()  argument
144 	return queue_var_show(queue_logical_block_size(q), page);  in queue_logical_block_size_show()
147 static ssize_t queue_physical_block_size_show(struct request_queue *q, char *page)  in queue_physical_block_size_show()  argument
149 	return queue_var_show(queue_physical_block_size(q), page);  in queue_physical_block_size_show()
152 static ssize_t queue_chunk_sectors_show(struct request_queue *q, char *page)  in queue_chunk_sectors_show()  argument
154 	return queue_var_show(q->limits.chunk_sectors, page);  in queue_chunk_sectors_show()
157 static ssize_t queue_io_min_show(struct request_queue *q, char *page)  in queue_io_min_show()  argument
159 	return queue_var_show(queue_io_min(q), page);  in queue_io_min_show()
162 static ssize_t queue_io_opt_show(struct request_queue *q, char *page)  in queue_io_opt_show()  argument
164 	return queue_var_show(queue_io_opt(q), page);  in queue_io_opt_show()
167 static ssize_t queue_discard_granularity_show(struct request_queue *q, char *page)  in queue_discard_granularity_show()  argument
169 	return queue_var_show(q->limits.discard_granularity, page);  in queue_discard_granularity_show()
172 static ssize_t queue_discard_max_hw_show(struct request_queue *q, char *page)  in queue_discard_max_hw_show()  argument
176 		(unsigned long long)q->limits.max_hw_discard_sectors << 9);  in queue_discard_max_hw_show()
179 static ssize_t queue_discard_max_show(struct request_queue *q, char *page)  in queue_discard_max_show()  argument
182 		       (unsigned long long)q->limits.max_discard_sectors << 9);  in queue_discard_max_show()
185 static ssize_t queue_discard_max_store(struct request_queue *q,  in queue_discard_max_store()  argument
194 	if (max_discard & (q->limits.discard_granularity - 1))  in queue_discard_max_store()
201 	if (max_discard > q->limits.max_hw_discard_sectors)  in queue_discard_max_store()
202 		max_discard = q->limits.max_hw_discard_sectors;  in queue_discard_max_store()
204 	q->limits.max_discard_sectors = max_discard;  in queue_discard_max_store()
208 static ssize_t queue_discard_zeroes_data_show(struct request_queue *q, char *page)  in queue_discard_zeroes_data_show()  argument
213 static ssize_t queue_write_same_max_show(struct request_queue *q, char *page)  in queue_write_same_max_show()  argument
216 		(unsigned long long)q->limits.max_write_same_sectors << 9);  in queue_write_same_max_show()
219 static ssize_t queue_write_zeroes_max_show(struct request_queue *q, char *page)  in queue_write_zeroes_max_show()  argument
222 		(unsigned long long)q->limits.max_write_zeroes_sectors << 9);  in queue_write_zeroes_max_show()
225 static ssize_t queue_zone_write_granularity_show(struct request_queue *q,  in queue_zone_write_granularity_show()  argument
228 	return queue_var_show(queue_zone_write_granularity(q), page);  in queue_zone_write_granularity_show()
231 static ssize_t queue_zone_append_max_show(struct request_queue *q, char *page)  in queue_zone_append_max_show()  argument
233 	unsigned long long max_sectors = q->limits.max_zone_append_sectors;  in queue_zone_append_max_show()
239 queue_max_sectors_store(struct request_queue *q, const char *page, size_t count)  in queue_max_sectors_store()  argument
242 		max_hw_sectors_kb = queue_max_hw_sectors(q) >> 1,  in queue_max_sectors_store()
250 					 q->limits.max_dev_sectors >> 1);  in queue_max_sectors_store()
255 	spin_lock_irq(&q->queue_lock);  in queue_max_sectors_store()
256 	q->limits.max_sectors = max_sectors_kb << 1;  in queue_max_sectors_store()
257 	if (q->disk)  in queue_max_sectors_store()
258 		q->disk->bdi->io_pages = max_sectors_kb >> (PAGE_SHIFT - 10);  in queue_max_sectors_store()
259 	spin_unlock_irq(&q->queue_lock);  in queue_max_sectors_store()
264 static ssize_t queue_max_hw_sectors_show(struct request_queue *q, char *page)  in queue_max_hw_sectors_show()  argument
266 	int max_hw_sectors_kb = queue_max_hw_sectors(q) >> 1;  in queue_max_hw_sectors_show()
271 static ssize_t queue_virt_boundary_mask_show(struct request_queue *q, char *page)  in queue_virt_boundary_mask_show()  argument
273 	return queue_var_show(q->limits.virt_boundary_mask, page);  in queue_virt_boundary_mask_show()
278 queue_##name##_show(struct request_queue *q, char *page)		\
281 	bit = test_bit(QUEUE_FLAG_##flag, &q->queue_flags);		\
285 queue_##name##_store(struct request_queue *q, const char *page, size_t count) \
296 		blk_queue_flag_set(QUEUE_FLAG_##flag, q);		\
298 		blk_queue_flag_clear(QUEUE_FLAG_##flag, q);		\
308 static ssize_t queue_zoned_show(struct request_queue *q, char *page)  in queue_zoned_show()  argument
310 	switch (blk_queue_zoned_model(q)) {  in queue_zoned_show()
320 static ssize_t queue_nr_zones_show(struct request_queue *q, char *page)  in queue_nr_zones_show()  argument
322 	return queue_var_show(blk_queue_nr_zones(q), page);  in queue_nr_zones_show()
325 static ssize_t queue_max_open_zones_show(struct request_queue *q, char *page)  in queue_max_open_zones_show()  argument
327 	return queue_var_show(queue_max_open_zones(q), page);  in queue_max_open_zones_show()
330 static ssize_t queue_max_active_zones_show(struct request_queue *q, char *page)  in queue_max_active_zones_show()  argument
332 	return queue_var_show(queue_max_active_zones(q), page);  in queue_max_active_zones_show()
335 static ssize_t queue_nomerges_show(struct request_queue *q, char *page)  in queue_nomerges_show()  argument
337 	return queue_var_show((blk_queue_nomerges(q) << 1) |  in queue_nomerges_show()
338 			       blk_queue_noxmerges(q), page);  in queue_nomerges_show()
341 static ssize_t queue_nomerges_store(struct request_queue *q, const char *page,  in queue_nomerges_store()  argument
350 	blk_queue_flag_clear(QUEUE_FLAG_NOMERGES, q);  in queue_nomerges_store()
351 	blk_queue_flag_clear(QUEUE_FLAG_NOXMERGES, q);  in queue_nomerges_store()
353 		blk_queue_flag_set(QUEUE_FLAG_NOMERGES, q);  in queue_nomerges_store()
355 		blk_queue_flag_set(QUEUE_FLAG_NOXMERGES, q);  in queue_nomerges_store()
360 static ssize_t queue_rq_affinity_show(struct request_queue *q, char *page)  in queue_rq_affinity_show()  argument
362 	bool set = test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags);  in queue_rq_affinity_show()
363 	bool force = test_bit(QUEUE_FLAG_SAME_FORCE, &q->queue_flags);  in queue_rq_affinity_show()
369 queue_rq_affinity_store(struct request_queue *q, const char *page, size_t count)  in queue_rq_affinity_store()  argument
380 		blk_queue_flag_set(QUEUE_FLAG_SAME_COMP, q);  in queue_rq_affinity_store()
381 		blk_queue_flag_set(QUEUE_FLAG_SAME_FORCE, q);  in queue_rq_affinity_store()
383 		blk_queue_flag_set(QUEUE_FLAG_SAME_COMP, q);  in queue_rq_affinity_store()
384 		blk_queue_flag_clear(QUEUE_FLAG_SAME_FORCE, q);  in queue_rq_affinity_store()
386 		blk_queue_flag_clear(QUEUE_FLAG_SAME_COMP, q);  in queue_rq_affinity_store()
387 		blk_queue_flag_clear(QUEUE_FLAG_SAME_FORCE, q);  in queue_rq_affinity_store()
393 static ssize_t queue_poll_delay_show(struct request_queue *q, char *page)  in queue_poll_delay_show()  argument
397 	if (q->poll_nsec == BLK_MQ_POLL_CLASSIC)  in queue_poll_delay_show()
400 		val = q->poll_nsec / 1000;  in queue_poll_delay_show()
405 static ssize_t queue_poll_delay_store(struct request_queue *q, const char *page,  in queue_poll_delay_store()  argument
410 	if (!q->mq_ops || !q->mq_ops->poll)  in queue_poll_delay_store()
418 		q->poll_nsec = BLK_MQ_POLL_CLASSIC;  in queue_poll_delay_store()
420 		q->poll_nsec = val * 1000;  in queue_poll_delay_store()
427 static ssize_t queue_poll_show(struct request_queue *q, char *page)  in queue_poll_show()  argument
429 	return queue_var_show(test_bit(QUEUE_FLAG_POLL, &q->queue_flags), page);  in queue_poll_show()
432 static ssize_t queue_poll_store(struct request_queue *q, const char *page,  in queue_poll_store()  argument
438 	if (!q->tag_set || q->tag_set->nr_maps <= HCTX_TYPE_POLL ||  in queue_poll_store()
439 	    !q->tag_set->map[HCTX_TYPE_POLL].nr_queues)  in queue_poll_store()
447 		blk_queue_flag_set(QUEUE_FLAG_POLL, q);  in queue_poll_store()
449 		blk_mq_freeze_queue(q);  in queue_poll_store()
450 		blk_queue_flag_clear(QUEUE_FLAG_POLL, q);  in queue_poll_store()
451 		blk_mq_unfreeze_queue(q);  in queue_poll_store()
457 static ssize_t queue_io_timeout_show(struct request_queue *q, char *page)  in queue_io_timeout_show()  argument
459 	return sprintf(page, "%u\n", jiffies_to_msecs(q->rq_timeout));  in queue_io_timeout_show()
462 static ssize_t queue_io_timeout_store(struct request_queue *q, const char *page,  in queue_io_timeout_store()  argument
472 	blk_queue_rq_timeout(q, msecs_to_jiffies(val));  in queue_io_timeout_store()
477 static ssize_t queue_wb_lat_show(struct request_queue *q, char *page)  in queue_wb_lat_show()  argument
479 	if (!wbt_rq_qos(q))  in queue_wb_lat_show()
482 	return sprintf(page, "%llu\n", div_u64(wbt_get_min_lat(q), 1000));  in queue_wb_lat_show()
485 static ssize_t queue_wb_lat_store(struct request_queue *q, const char *page,  in queue_wb_lat_store()  argument
498 	rqos = wbt_rq_qos(q);  in queue_wb_lat_store()
500 		ret = wbt_init(q);  in queue_wb_lat_store()
506 		val = wbt_default_latency_nsec(q);  in queue_wb_lat_store()
510 	if (wbt_get_min_lat(q) == val)  in queue_wb_lat_store()
518 	blk_mq_freeze_queue(q);  in queue_wb_lat_store()
519 	blk_mq_quiesce_queue(q);  in queue_wb_lat_store()
521 	wbt_set_min_lat(q, val);  in queue_wb_lat_store()
523 	blk_mq_unquiesce_queue(q);  in queue_wb_lat_store()
524 	blk_mq_unfreeze_queue(q);  in queue_wb_lat_store()
529 static ssize_t queue_wc_show(struct request_queue *q, char *page)  in queue_wc_show()  argument
531 	if (test_bit(QUEUE_FLAG_WC, &q->queue_flags))  in queue_wc_show()
537 static ssize_t queue_wc_store(struct request_queue *q, const char *page,  in queue_wc_store()  argument
552 		blk_queue_flag_set(QUEUE_FLAG_WC, q);  in queue_wc_store()
554 		blk_queue_flag_clear(QUEUE_FLAG_WC, q);  in queue_wc_store()
559 static ssize_t queue_fua_show(struct request_queue *q, char *page)  in queue_fua_show()  argument
561 	return sprintf(page, "%u\n", test_bit(QUEUE_FLAG_FUA, &q->queue_flags));  in queue_fua_show()
564 static ssize_t queue_dax_show(struct request_queue *q, char *page)  in queue_dax_show()  argument
566 	return queue_var_show(blk_queue_dax(q), page);  in queue_dax_show()
690 	struct request_queue *q =  in queue_attr_visible()  local
694 		(!q->mq_ops || !q->mq_ops->timeout))  in queue_attr_visible()
699 	    !blk_queue_is_zoned(q))  in queue_attr_visible()
717 	struct request_queue *q =  in queue_attr_show()  local
723 	mutex_lock(&q->sysfs_lock);  in queue_attr_show()
724 	res = entry->show(q, page);  in queue_attr_show()
725 	mutex_unlock(&q->sysfs_lock);  in queue_attr_show()
734 	struct request_queue *q;  in queue_attr_store()  local
740 	q = container_of(kobj, struct request_queue, kobj);  in queue_attr_store()
741 	mutex_lock(&q->sysfs_lock);  in queue_attr_store()
742 	res = entry->store(q, page, length);  in queue_attr_store()
743 	mutex_unlock(&q->sysfs_lock);  in queue_attr_store()
749 	struct request_queue *q = container_of(rcu_head, struct request_queue,  in blk_free_queue_rcu()  local
751 	kmem_cache_free(blk_requestq_cachep, q);  in blk_free_queue_rcu()
755 static void blk_exit_queue(struct request_queue *q)  in blk_exit_queue()  argument
762 	if (q->elevator) {  in blk_exit_queue()
763 		ioc_clear_queue(q);  in blk_exit_queue()
764 		__elevator_exit(q, q->elevator);  in blk_exit_queue()
772 	blkcg_exit_queue(q);  in blk_exit_queue()
797 	struct request_queue *q =  in blk_release_queue()  local
802 	if (test_bit(QUEUE_FLAG_POLL_STATS, &q->queue_flags))  in blk_release_queue()
803 		blk_stat_remove_callback(q, q->poll_cb);  in blk_release_queue()
804 	blk_stat_free_callback(q->poll_cb);  in blk_release_queue()
806 	blk_free_queue_stats(q->stats);  in blk_release_queue()
808 	if (queue_is_mq(q)) {  in blk_release_queue()
812 		cancel_delayed_work_sync(&q->requeue_work);  in blk_release_queue()
814 		queue_for_each_hw_ctx(q, hctx, i)  in blk_release_queue()
818 	blk_exit_queue(q);  in blk_release_queue()
820 	blk_queue_free_zone_bitmaps(q);  in blk_release_queue()
822 	if (queue_is_mq(q))  in blk_release_queue()
823 		blk_mq_release(q);  in blk_release_queue()
825 	blk_trace_shutdown(q);  in blk_release_queue()
826 	mutex_lock(&q->debugfs_mutex);  in blk_release_queue()
827 	debugfs_remove_recursive(q->debugfs_dir);  in blk_release_queue()
828 	mutex_unlock(&q->debugfs_mutex);  in blk_release_queue()
830 	if (queue_is_mq(q))  in blk_release_queue()
831 		blk_mq_debugfs_unregister(q);  in blk_release_queue()
833 	bioset_exit(&q->bio_split);  in blk_release_queue()
835 	ida_simple_remove(&blk_queue_ida, q->id);  in blk_release_queue()
836 	call_rcu(&q->rcu_head, blk_free_queue_rcu);  in blk_release_queue()
857 	struct request_queue *q = disk->queue;  in blk_register_queue()  local
863 	mutex_lock(&q->sysfs_dir_lock);  in blk_register_queue()
865 	ret = kobject_add(&q->kobj, kobject_get(&dev->kobj), "%s", "queue");  in blk_register_queue()
871 	ret = sysfs_create_group(&q->kobj, &queue_attr_group);  in blk_register_queue()
874 		kobject_del(&q->kobj);  in blk_register_queue()
879 	mutex_lock(&q->debugfs_mutex);  in blk_register_queue()
880 	q->debugfs_dir = debugfs_create_dir(kobject_name(q->kobj.parent),  in blk_register_queue()
882 	mutex_unlock(&q->debugfs_mutex);  in blk_register_queue()
884 	if (queue_is_mq(q)) {  in blk_register_queue()
885 		__blk_mq_register_dev(dev, q);  in blk_register_queue()
886 		blk_mq_debugfs_register(q);  in blk_register_queue()
889 	mutex_lock(&q->sysfs_lock);  in blk_register_queue()
890 	if (q->elevator) {  in blk_register_queue()
891 		ret = elv_register_queue(q, false);  in blk_register_queue()
893 			mutex_unlock(&q->sysfs_lock);  in blk_register_queue()
894 			mutex_unlock(&q->sysfs_dir_lock);  in blk_register_queue()
895 			kobject_del(&q->kobj);  in blk_register_queue()
902 	blk_queue_flag_set(QUEUE_FLAG_REGISTERED, q);  in blk_register_queue()
903 	wbt_enable_default(q);  in blk_register_queue()
904 	blk_throtl_register_queue(q);  in blk_register_queue()
907 	kobject_uevent(&q->kobj, KOBJ_ADD);  in blk_register_queue()
908 	if (q->elevator)  in blk_register_queue()
909 		kobject_uevent(&q->elevator->kobj, KOBJ_ADD);  in blk_register_queue()
910 	mutex_unlock(&q->sysfs_lock);  in blk_register_queue()
914 	mutex_unlock(&q->sysfs_dir_lock);  in blk_register_queue()
925 	if (!blk_queue_init_done(q)) {  in blk_register_queue()
926 		blk_queue_flag_set(QUEUE_FLAG_INIT_DONE, q);  in blk_register_queue()
927 		percpu_ref_switch_to_percpu(&q->q_usage_counter);  in blk_register_queue()
942 	struct request_queue *q = disk->queue;  in blk_unregister_queue()  local
944 	if (WARN_ON(!q))  in blk_unregister_queue()
948 	if (!blk_queue_registered(q))  in blk_unregister_queue()
956 	mutex_lock(&q->sysfs_lock);  in blk_unregister_queue()
957 	blk_queue_flag_clear(QUEUE_FLAG_REGISTERED, q);  in blk_unregister_queue()
958 	mutex_unlock(&q->sysfs_lock);  in blk_unregister_queue()
960 	mutex_lock(&q->sysfs_dir_lock);  in blk_unregister_queue()
965 	if (queue_is_mq(q))  in blk_unregister_queue()
966 		blk_mq_unregister_dev(disk_to_dev(disk), q);  in blk_unregister_queue()
968 	kobject_uevent(&q->kobj, KOBJ_REMOVE);  in blk_unregister_queue()
969 	kobject_del(&q->kobj);  in blk_unregister_queue()
972 	mutex_lock(&q->sysfs_lock);  in blk_unregister_queue()
973 	if (q->elevator)  in blk_unregister_queue()
974 		elv_unregister_queue(q);  in blk_unregister_queue()
975 	mutex_unlock(&q->sysfs_lock);  in blk_unregister_queue()
976 	mutex_unlock(&q->sysfs_dir_lock);  in blk_unregister_queue()