[mirror_ubuntu-bionic-kernel.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, struct bio *bio);

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_restart(struct blk_mq_hw_ctx *hctx);

void blk_mq_sched_insert_request(struct request *rq, bool at_head,
				 bool run_queue, bool async, bool can_block);
void blk_mq_sched_insert_requests(struct request_queue *q,
				  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);

int blk_mq_sched_init_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx,
			   unsigned int hctx_idx);
void blk_mq_sched_exit_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx,
			    unsigned int hctx_idx);

int blk_mq_sched_init(struct request_queue *q);

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

	return true;
}

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

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

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.mq.started_request)
		e->type->ops.mq.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.mq.requeue_request)
		e->type->ops.mq.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.mq.has_work)
		return e->type->ops.mq.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
44e8c2bf	11	void blk_mq_sched_assign_ioc(struct request rq, struct bio bio);
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);
6d8c6c0f	18	void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
bd166ef1	19
bd6737f1 JA	20	void blk_mq_sched_insert_request(struct request *rq, bool at_head,
	21	bool run_queue, bool async, bool can_block);
	22	void blk_mq_sched_insert_requests(struct request_queue *q,
	23	struct blk_mq_ctx *ctx,
	24	struct list_head *list, bool run_queue_async);
	25
bd166ef1	26	void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);
bd166ef1	27
6917ff0b	28	int blk_mq_init_sched(struct request_queue q, struct elevator_type e);
54d5329d	29	void blk_mq_exit_sched(struct request_queue q, struct elevator_queue e);
bd166ef1	30
93252632 OS	31	int blk_mq_sched_init_hctx(struct request_queue q, struct blk_mq_hw_ctx hctx,
	32	unsigned int hctx_idx);
	33	void blk_mq_sched_exit_hctx(struct request_queue q, struct blk_mq_hw_ctx hctx,
	34	unsigned int hctx_idx);
	35
d3484991 JA	36	int blk_mq_sched_init(struct request_queue *q);
d3484991 JA	37
bd166ef1 JA	38	static inline bool
	39	blk_mq_sched_bio_merge(struct request_queue q, struct bio bio)
	40	{
9bddeb2a	41	if (blk_queue_nomerges(q) \|\| !bio_mergeable(bio))
bd166ef1 JA	42	return false;
	43
	44	return __blk_mq_sched_bio_merge(q, bio);
	45	}
	46
bd166ef1 JA	47	static inline bool
	48	blk_mq_sched_allow_merge(struct request_queue q, struct request rq,
	49	struct bio *bio)
	50	{
	51	struct elevator_queue *e = q->elevator;
	52
	53	if (e && e->type->ops.mq.allow_merge)
	54	return e->type->ops.mq.allow_merge(q, rq, bio);
	55
	56	return true;
	57	}
	58
c05f8525	59	static inline void blk_mq_sched_completed_request(struct request *rq)
bd166ef1	60	{
c05f8525	61	struct elevator_queue *e = rq->q->elevator;
bd166ef1 JA	62
bd166ef1 JA	63	if (e && e->type->ops.mq.completed_request)
c05f8525	64	e->type->ops.mq.completed_request(rq);
bd166ef1 JA	65	}
	66
	67	static inline void blk_mq_sched_started_request(struct request *rq)
	68	{
	69	struct request_queue *q = rq->q;
	70	struct elevator_queue *e = q->elevator;
	71
	72	if (e && e->type->ops.mq.started_request)
	73	e->type->ops.mq.started_request(rq);
	74	}
	75
	76	static inline void blk_mq_sched_requeue_request(struct request *rq)
	77	{
	78	struct request_queue *q = rq->q;
	79	struct elevator_queue *e = q->elevator;
	80
	81	if (e && e->type->ops.mq.requeue_request)
	82	e->type->ops.mq.requeue_request(rq);
	83	}
	84
	85	static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx)
	86	{
	87	struct elevator_queue *e = hctx->queue->elevator;
	88
	89	if (e && e->type->ops.mq.has_work)
	90	return e->type->ops.mq.has_work(hctx);
	91
	92	return false;
	93	}
	94
bd166ef1 JA	95	static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx)
	96	{
	97	return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
	98	}
	99
	100	#endif