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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 | |
30 | static inline bool | |
14ccb66b CH |
31 | blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio, |
32 | unsigned int nr_segs) | |
bd166ef1 | 33 | { |
9bddeb2a | 34 | if (blk_queue_nomerges(q) || !bio_mergeable(bio)) |
bd166ef1 JA |
35 | return false; |
36 | ||
14ccb66b | 37 | return __blk_mq_sched_bio_merge(q, bio, nr_segs); |
bd166ef1 JA |
38 | } |
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) |
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) |
57 | e->type->ops.completed_request(rq, now); | |
bd166ef1 JA |
58 | } |
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) |
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 |