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bd166ef1 JA |
1 | #ifndef BLK_MQ_SCHED_H |
2 | #define BLK_MQ_SCHED_H | |
3 | ||
4 | #include "blk-mq.h" | |
5 | #include "blk-mq-tag.h" | |
6 | ||
bd166ef1 JA |
7 | void blk_mq_sched_free_hctx_data(struct request_queue *q, |
8 | void (*exit)(struct blk_mq_hw_ctx *)); | |
9 | ||
44e8c2bf | 10 | void blk_mq_sched_assign_ioc(struct request *rq, struct bio *bio); |
bd166ef1 JA |
11 | |
12 | void blk_mq_sched_request_inserted(struct request *rq); | |
e4d750c9 JA |
13 | bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio, |
14 | struct request **merged_request); | |
bd166ef1 JA |
15 | bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio); |
16 | bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq); | |
6d8c6c0f | 17 | void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx); |
bd166ef1 | 18 | |
bd6737f1 JA |
19 | void blk_mq_sched_insert_request(struct request *rq, bool at_head, |
20 | bool run_queue, bool async, bool can_block); | |
21 | void blk_mq_sched_insert_requests(struct request_queue *q, | |
22 | struct blk_mq_ctx *ctx, | |
23 | struct list_head *list, bool run_queue_async); | |
24 | ||
bd166ef1 | 25 | void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx); |
bd166ef1 | 26 | |
6917ff0b | 27 | int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e); |
54d5329d | 28 | void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e); |
bd166ef1 | 29 | |
93252632 OS |
30 | int blk_mq_sched_init_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx, |
31 | unsigned int hctx_idx); | |
32 | void blk_mq_sched_exit_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx, | |
33 | unsigned int hctx_idx); | |
34 | ||
d3484991 JA |
35 | int blk_mq_sched_init(struct request_queue *q); |
36 | ||
bd166ef1 JA |
37 | static inline bool |
38 | blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio) | |
39 | { | |
9bddeb2a | 40 | if (blk_queue_nomerges(q) || !bio_mergeable(bio)) |
bd166ef1 JA |
41 | return false; |
42 | ||
43 | return __blk_mq_sched_bio_merge(q, bio); | |
44 | } | |
45 | ||
bd166ef1 JA |
46 | static inline bool |
47 | blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq, | |
48 | struct bio *bio) | |
49 | { | |
50 | struct elevator_queue *e = q->elevator; | |
51 | ||
52 | if (e && e->type->ops.mq.allow_merge) | |
53 | return e->type->ops.mq.allow_merge(q, rq, bio); | |
54 | ||
55 | return true; | |
56 | } | |
57 | ||
c05f8525 | 58 | static inline void blk_mq_sched_completed_request(struct request *rq) |
bd166ef1 | 59 | { |
c05f8525 | 60 | struct elevator_queue *e = rq->q->elevator; |
bd166ef1 JA |
61 | |
62 | if (e && e->type->ops.mq.completed_request) | |
c05f8525 | 63 | e->type->ops.mq.completed_request(rq); |
bd166ef1 JA |
64 | } |
65 | ||
66 | static inline void blk_mq_sched_started_request(struct request *rq) | |
67 | { | |
68 | struct request_queue *q = rq->q; | |
69 | struct elevator_queue *e = q->elevator; | |
70 | ||
71 | if (e && e->type->ops.mq.started_request) | |
72 | e->type->ops.mq.started_request(rq); | |
73 | } | |
74 | ||
75 | static inline void blk_mq_sched_requeue_request(struct request *rq) | |
76 | { | |
77 | struct request_queue *q = rq->q; | |
78 | struct elevator_queue *e = q->elevator; | |
79 | ||
80 | if (e && e->type->ops.mq.requeue_request) | |
81 | e->type->ops.mq.requeue_request(rq); | |
82 | } | |
83 | ||
84 | static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx) | |
85 | { | |
86 | struct elevator_queue *e = hctx->queue->elevator; | |
87 | ||
88 | if (e && e->type->ops.mq.has_work) | |
89 | return e->type->ops.mq.has_work(hctx); | |
90 | ||
91 | return false; | |
92 | } | |
93 | ||
bd166ef1 JA |
94 | static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx) |
95 | { | |
96 | return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state); | |
97 | } | |
98 | ||
99 | #endif |