mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
87dd1d63dc
Move blk_mq_sched_assign_ioc so that many interfaces from the file can be marked static. Rename the function to ioc_find_get_icq as well and return the icq to simplify the interface. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211126115817.2087431-8-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef BLK_MQ_SCHED_H
|
|
#define BLK_MQ_SCHED_H
|
|
|
|
#include "elevator.h"
|
|
#include "blk-mq.h"
|
|
#include "blk-mq-tag.h"
|
|
|
|
#define MAX_SCHED_RQ (16 * BLKDEV_DEFAULT_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,
|
|
struct list_head *free);
|
|
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_rqs(struct request_queue *q);
|
|
|
|
static inline void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx)
|
|
{
|
|
if (test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state))
|
|
__blk_mq_sched_restart(hctx);
|
|
}
|
|
|
|
static inline bool bio_mergeable(struct bio *bio)
|
|
{
|
|
return !(bio->bi_opf & REQ_NOMERGE_FLAGS);
|
|
}
|
|
|
|
static inline bool
|
|
blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq,
|
|
struct bio *bio)
|
|
{
|
|
if (rq->rq_flags & RQF_ELV) {
|
|
struct elevator_queue *e = q->elevator;
|
|
|
|
if (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)
|
|
{
|
|
if (rq->rq_flags & RQF_ELV) {
|
|
struct elevator_queue *e = rq->q->elevator;
|
|
|
|
if (e->type->ops.completed_request)
|
|
e->type->ops.completed_request(rq, now);
|
|
}
|
|
}
|
|
|
|
static inline void blk_mq_sched_requeue_request(struct request *rq)
|
|
{
|
|
if (rq->rq_flags & RQF_ELV) {
|
|
struct request_queue *q = rq->q;
|
|
struct elevator_queue *e = q->elevator;
|
|
|
|
if ((rq->rq_flags & RQF_ELVPRIV) && 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
|