[mirror_ubuntu-impish-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_assign_ioc(struct request *rq);

bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio,
		unsigned int nr_segs, struct request **merged_request);
bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio,
		unsigned int nr_segs);
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);
void blk_mq_sched_free_requests(struct request_queue *q);

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

	return __blk_mq_sched_bio_merge(q, bio, nr_segs);
}

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_requeue_request(struct request *rq)
{
	struct request_queue *q = rq->q;
	struct elevator_queue *e = q->elevator;

	if ((rq->rq_flags & RQF_ELVPRIV) && 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
e2b3fa5a	8	void blk_mq_sched_assign_ioc(struct request *rq);
bd166ef1	9
e4d750c9	10	bool blk_mq_sched_try_merge(struct request_queue q, struct bio bio,
14ccb66b CH	11	unsigned int nr_segs, struct request **merged_request);
	12	bool __blk_mq_sched_bio_merge(struct request_queue q, struct bio bio,
	13	unsigned int nr_segs);
bd166ef1	14	bool blk_mq_sched_try_insert_merge(struct request_queue q, struct request rq);
7211aef8	15	void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx);
6d8c6c0f	16	void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
bd166ef1	17
bd6737f1	18	void blk_mq_sched_insert_request(struct request *rq, bool at_head,
9e97d295	19	bool run_queue, bool async);
67cae4c9	20	void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx,
bd6737f1 JA	21	struct blk_mq_ctx *ctx,
	22	struct list_head *list, bool run_queue_async);
	23
bd166ef1	24	void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);
bd166ef1	25
6917ff0b	26	int blk_mq_init_sched(struct request_queue q, struct elevator_type e);
54d5329d	27	void blk_mq_exit_sched(struct request_queue q, struct elevator_queue e);
c3e22192	28	void blk_mq_sched_free_requests(struct request_queue *q);
bd166ef1 JA	29
bd166ef1 JA	30	static inline bool
14ccb66b CH	31	blk_mq_sched_bio_merge(struct request_queue q, struct bio bio,
14ccb66b CH	32	unsigned int nr_segs)
bd166ef1	33	{
9bddeb2a	34	if (blk_queue_nomerges(q) \|\| !bio_mergeable(bio))
bd166ef1 JA	35	return false;
bd166ef1 JA	36
14ccb66b	37	return __blk_mq_sched_bio_merge(q, bio, nr_segs);
bd166ef1 JA	38	}
bd166ef1 JA	39
bd166ef1 JA	40	static inline bool
	41	blk_mq_sched_allow_merge(struct request_queue q, struct request rq,
	42	struct bio *bio)
	43	{
	44	struct elevator_queue *e = q->elevator;
	45
f9cd4bfe JA	46	if (e && e->type->ops.allow_merge)
f9cd4bfe JA	47	return e->type->ops.allow_merge(q, rq, bio);
bd166ef1 JA	48
	49	return true;
	50	}
	51
ed88660a	52	static inline void blk_mq_sched_completed_request(struct request *rq, u64 now)
bd166ef1	53	{
c05f8525	54	struct elevator_queue *e = rq->q->elevator;
bd166ef1	55
f9cd4bfe JA	56	if (e && e->type->ops.completed_request)
f9cd4bfe JA	57	e->type->ops.completed_request(rq, now);
bd166ef1 JA	58	}
bd166ef1 JA	59
bd166ef1 JA	60	static inline void blk_mq_sched_requeue_request(struct request *rq)
	61	{
	62	struct request_queue *q = rq->q;
	63	struct elevator_queue *e = q->elevator;
	64
e8a8a185	65	if ((rq->rq_flags & RQF_ELVPRIV) && e && e->type->ops.requeue_request)
f9cd4bfe	66	e->type->ops.requeue_request(rq);
bd166ef1 JA	67	}
	68
	69	static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx)
	70	{
	71	struct elevator_queue *e = hctx->queue->elevator;
	72
f9cd4bfe JA	73	if (e && e->type->ops.has_work)
f9cd4bfe JA	74	return e->type->ops.has_work(hctx);
bd166ef1 JA	75
	76	return false;
	77	}
	78
bd166ef1 JA	79	static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx)
	80	{
	81	return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
	82	}
	83
	84	#endif