[thirdparty/kernel/stable.git] / block / blk-mq-sched.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef BLK_MQ_SCHED_H
#define BLK_MQ_SCHED_H

#include "blk-mq.h"
#include "blk-mq-tag.h"

void blk_mq_sched_free_hctx_data(struct request_queue *q,
				 void (*exit)(struct blk_mq_hw_ctx *));

void blk_mq_sched_assign_ioc(struct request *rq);

void blk_mq_sched_request_inserted(struct request *rq);
bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio,
				struct request **merged_request);
bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio);
bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq);
void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx);
void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);

void blk_mq_sched_insert_request(struct request *rq, bool at_head,
				 bool run_queue, bool async);
void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx,
				  struct blk_mq_ctx *ctx,
				  struct list_head *list, bool run_queue_async);

void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);

int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e);
void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e);

static inline bool
blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio)
{
	if (blk_queue_nomerges(q) || !bio_mergeable(bio))
		return false;

	return __blk_mq_sched_bio_merge(q, bio);
}

static inline bool
blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq,
			 struct bio *bio)
{
	struct elevator_queue *e = q->elevator;

	if (e && e->type->ops.allow_merge)
		return e->type->ops.allow_merge(q, rq, bio);

	return true;
}

static inline void blk_mq_sched_completed_request(struct request *rq, u64 now)
{
	struct elevator_queue *e = rq->q->elevator;

	if (e && e->type->ops.completed_request)
		e->type->ops.completed_request(rq, now);
}

static inline void blk_mq_sched_started_request(struct request *rq)
{
	struct request_queue *q = rq->q;
	struct elevator_queue *e = q->elevator;

	if (e && e->type->ops.started_request)
		e->type->ops.started_request(rq);
}

static inline void blk_mq_sched_requeue_request(struct request *rq)
{
	struct request_queue *q = rq->q;
	struct elevator_queue *e = q->elevator;

	if (e && e->type->ops.requeue_request)
		e->type->ops.requeue_request(rq);
}

static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx)
{
	struct elevator_queue *e = hctx->queue->elevator;

	if (e && e->type->ops.has_work)
		return e->type->ops.has_work(hctx);

	return false;
}

static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx)
{
	return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
}

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
bd166ef1 JA	2	#ifndef BLK_MQ_SCHED_H
	3	#define BLK_MQ_SCHED_H
	4
	5	#include "blk-mq.h"
	6	#include "blk-mq-tag.h"
	7
bd166ef1 JA	8	void blk_mq_sched_free_hctx_data(struct request_queue *q,
	9	void (exit)(struct blk_mq_hw_ctx ));
	10
e2b3fa5a	11	void blk_mq_sched_assign_ioc(struct request *rq);
bd166ef1 JA	12
bd166ef1 JA	13	void blk_mq_sched_request_inserted(struct request *rq);
e4d750c9 JA	14	bool blk_mq_sched_try_merge(struct request_queue q, struct bio bio,
e4d750c9 JA	15	struct request **merged_request);
bd166ef1 JA	16	bool __blk_mq_sched_bio_merge(struct request_queue q, struct bio bio);
bd166ef1 JA	17	bool blk_mq_sched_try_insert_merge(struct request_queue q, struct request rq);
7211aef8	18	void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx);
6d8c6c0f	19	void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
bd166ef1	20
bd6737f1	21	void blk_mq_sched_insert_request(struct request *rq, bool at_head,
9e97d295	22	bool run_queue, bool async);
67cae4c9	23	void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx,
bd6737f1 JA	24	struct blk_mq_ctx *ctx,
	25	struct list_head *list, bool run_queue_async);
	26
bd166ef1	27	void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);
bd166ef1	28
6917ff0b	29	int blk_mq_init_sched(struct request_queue q, struct elevator_type e);
54d5329d	30	void blk_mq_exit_sched(struct request_queue q, struct elevator_queue e);
bd166ef1 JA	31
	32	static inline bool
	33	blk_mq_sched_bio_merge(struct request_queue q, struct bio bio)
	34	{
9bddeb2a	35	if (blk_queue_nomerges(q) \|\| !bio_mergeable(bio))
bd166ef1 JA	36	return false;
	37
	38	return __blk_mq_sched_bio_merge(q, bio);
	39	}
	40
bd166ef1 JA	41	static inline bool
	42	blk_mq_sched_allow_merge(struct request_queue q, struct request rq,
	43	struct bio *bio)
	44	{
	45	struct elevator_queue *e = q->elevator;
	46
f9cd4bfe JA	47	if (e && e->type->ops.allow_merge)
f9cd4bfe JA	48	return e->type->ops.allow_merge(q, rq, bio);
bd166ef1 JA	49
	50	return true;
	51	}
	52
ed88660a	53	static inline void blk_mq_sched_completed_request(struct request *rq, u64 now)
bd166ef1	54	{
c05f8525	55	struct elevator_queue *e = rq->q->elevator;
bd166ef1	56
f9cd4bfe JA	57	if (e && e->type->ops.completed_request)
f9cd4bfe JA	58	e->type->ops.completed_request(rq, now);
bd166ef1 JA	59	}
	60
	61	static inline void blk_mq_sched_started_request(struct request *rq)
	62	{
	63	struct request_queue *q = rq->q;
	64	struct elevator_queue *e = q->elevator;
	65
f9cd4bfe JA	66	if (e && e->type->ops.started_request)
f9cd4bfe JA	67	e->type->ops.started_request(rq);
bd166ef1 JA	68	}
	69
	70	static inline void blk_mq_sched_requeue_request(struct request *rq)
	71	{
	72	struct request_queue *q = rq->q;
	73	struct elevator_queue *e = q->elevator;
	74
f9cd4bfe JA	75	if (e && e->type->ops.requeue_request)
f9cd4bfe JA	76	e->type->ops.requeue_request(rq);
bd166ef1 JA	77	}
	78
	79	static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx)
	80	{
	81	struct elevator_queue *e = hctx->queue->elevator;
	82
f9cd4bfe JA	83	if (e && e->type->ops.has_work)
f9cd4bfe JA	84	return e->type->ops.has_work(hctx);
bd166ef1 JA	85
	86	return false;
	87	}
	88
bd166ef1 JA	89	static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx)
	90	{
	91	return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
	92	}
	93
	94	#endif