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