39 bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *,
43 void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list);
44 struct request *blk_mq_dequeue_from_ctx(struct blk_mq_hw_ctx *hctx,
62 void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
66 void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
68 void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
125 extern void blk_mq_hctx_kobj_init(struct blk_mq_hw_ctx *hctx);
164 	struct blk_mq_hw_ctx *hctx;  member
175 		return data->hctx->tags;  in blk_mq_tags_from_data()
176 	return data->hctx->sched_tags;  in blk_mq_tags_from_data()
179 static inline bool blk_mq_hctx_stopped(struct blk_mq_hw_ctx *hctx)  in blk_mq_hctx_stopped()  argument
181 	return test_bit(BLK_MQ_S_STOPPED, &hctx->state);  in blk_mq_hctx_stopped()
184 static inline bool blk_mq_hw_queue_mapped(struct blk_mq_hw_ctx *hctx)  in blk_mq_hw_queue_mapped()  argument
186 	return hctx->nr_ctx && hctx->tags;  in blk_mq_hw_queue_mapped()
224 static inline void __blk_mq_inc_active_requests(struct blk_mq_hw_ctx *hctx)  in __blk_mq_inc_active_requests()  argument
226 	if (blk_mq_is_shared_tags(hctx->flags))  in __blk_mq_inc_active_requests()
227 		atomic_inc(&hctx->queue->nr_active_requests_shared_tags);  in __blk_mq_inc_active_requests()
229 		atomic_inc(&hctx->nr_active);  in __blk_mq_inc_active_requests()
232 static inline void __blk_mq_sub_active_requests(struct blk_mq_hw_ctx *hctx,  in __blk_mq_sub_active_requests()  argument
235 	if (blk_mq_is_shared_tags(hctx->flags))  in __blk_mq_sub_active_requests()
236 		atomic_sub(val, &hctx->queue->nr_active_requests_shared_tags);  in __blk_mq_sub_active_requests()
238 		atomic_sub(val, &hctx->nr_active);  in __blk_mq_sub_active_requests()
241 static inline void __blk_mq_dec_active_requests(struct blk_mq_hw_ctx *hctx)  in __blk_mq_dec_active_requests()  argument
243 	__blk_mq_sub_active_requests(hctx, 1);  in __blk_mq_dec_active_requests()
246 static inline int __blk_mq_active_requests(struct blk_mq_hw_ctx *hctx)  in __blk_mq_active_requests()  argument
248 	if (blk_mq_is_shared_tags(hctx->flags))  in __blk_mq_active_requests()
249 		return atomic_read(&hctx->queue->nr_active_requests_shared_tags);  in __blk_mq_active_requests()
250 	return atomic_read(&hctx->nr_active);  in __blk_mq_active_requests()
252 static inline void __blk_mq_put_driver_tag(struct blk_mq_hw_ctx *hctx,  in __blk_mq_put_driver_tag()  argument
255 	blk_mq_put_tag(hctx->tags, rq->mq_ctx, rq->tag);  in __blk_mq_put_driver_tag()
260 		__blk_mq_dec_active_requests(hctx);  in __blk_mq_put_driver_tag()
272 bool __blk_mq_get_driver_tag(struct blk_mq_hw_ctx *hctx, struct request *rq);
276 	struct blk_mq_hw_ctx *hctx = rq->mq_hctx;  in blk_mq_get_driver_tag()  local
279 	    !(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) {  in blk_mq_get_driver_tag()
280 		hctx->tags->rqs[rq->tag] = rq;  in blk_mq_get_driver_tag()
284 	return __blk_mq_get_driver_tag(hctx, rq);  in blk_mq_get_driver_tag()
341 static inline bool hctx_may_queue(struct blk_mq_hw_ctx *hctx,  in hctx_may_queue()  argument
346 	if (!hctx || !(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED))  in hctx_may_queue()
355 	if (blk_mq_is_shared_tags(hctx->flags)) {  in hctx_may_queue()
356 		struct request_queue *q = hctx->queue;  in hctx_may_queue()
361 		if (!test_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state))  in hctx_may_queue()
365 	users = atomic_read(&hctx->tags->active_queues);  in hctx_may_queue()
374 	return __blk_mq_active_requests(hctx) < depth;  in hctx_may_queue()