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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 | ||
10 | struct request *blk_mq_sched_get_request(struct request_queue *q, struct bio *bio, unsigned int op, struct blk_mq_alloc_data *data); | |
11 | void blk_mq_sched_put_request(struct request *rq); | |
12 | ||
13 | void blk_mq_sched_request_inserted(struct request *rq); | |
e4d750c9 JA |
14 | bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio, |
15 | struct request **merged_request); | |
bd166ef1 JA |
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); | |
6d8c6c0f | 18 | void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx); |
bd166ef1 | 19 | |
bd6737f1 JA |
20 | void blk_mq_sched_insert_request(struct request *rq, bool at_head, |
21 | bool run_queue, bool async, bool can_block); | |
22 | void blk_mq_sched_insert_requests(struct request_queue *q, | |
23 | struct blk_mq_ctx *ctx, | |
24 | struct list_head *list, bool run_queue_async); | |
25 | ||
bd166ef1 | 26 | void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx); |
bd166ef1 | 27 | |
6917ff0b | 28 | int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e); |
54d5329d | 29 | void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e); |
bd166ef1 | 30 | |
93252632 OS |
31 | int blk_mq_sched_init_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx, |
32 | unsigned int hctx_idx); | |
33 | void blk_mq_sched_exit_hctx(struct request_queue *q, struct blk_mq_hw_ctx *hctx, | |
34 | unsigned int hctx_idx); | |
35 | ||
d3484991 JA |
36 | int blk_mq_sched_init(struct request_queue *q); |
37 | ||
bd166ef1 JA |
38 | static inline bool |
39 | blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio) | |
40 | { | |
41 | struct elevator_queue *e = q->elevator; | |
42 | ||
43 | if (!e || blk_queue_nomerges(q) || !bio_mergeable(bio)) | |
44 | return false; | |
45 | ||
46 | return __blk_mq_sched_bio_merge(q, bio); | |
47 | } | |
48 | ||
49 | static inline int blk_mq_sched_get_rq_priv(struct request_queue *q, | |
f1ba8261 PV |
50 | struct request *rq, |
51 | struct bio *bio) | |
bd166ef1 JA |
52 | { |
53 | struct elevator_queue *e = q->elevator; | |
54 | ||
55 | if (e && e->type->ops.mq.get_rq_priv) | |
f1ba8261 | 56 | return e->type->ops.mq.get_rq_priv(q, rq, bio); |
bd166ef1 JA |
57 | |
58 | return 0; | |
59 | } | |
60 | ||
61 | static inline void blk_mq_sched_put_rq_priv(struct request_queue *q, | |
62 | struct request *rq) | |
63 | { | |
64 | struct elevator_queue *e = q->elevator; | |
65 | ||
66 | if (e && e->type->ops.mq.put_rq_priv) | |
67 | e->type->ops.mq.put_rq_priv(q, rq); | |
68 | } | |
69 | ||
bd166ef1 JA |
70 | static inline bool |
71 | blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq, | |
72 | struct bio *bio) | |
73 | { | |
74 | struct elevator_queue *e = q->elevator; | |
75 | ||
76 | if (e && e->type->ops.mq.allow_merge) | |
77 | return e->type->ops.mq.allow_merge(q, rq, bio); | |
78 | ||
79 | return true; | |
80 | } | |
81 | ||
c05f8525 | 82 | static inline void blk_mq_sched_completed_request(struct request *rq) |
bd166ef1 | 83 | { |
c05f8525 | 84 | struct elevator_queue *e = rq->q->elevator; |
bd166ef1 JA |
85 | |
86 | if (e && e->type->ops.mq.completed_request) | |
c05f8525 | 87 | e->type->ops.mq.completed_request(rq); |
bd166ef1 JA |
88 | } |
89 | ||
90 | static inline void blk_mq_sched_started_request(struct request *rq) | |
91 | { | |
92 | struct request_queue *q = rq->q; | |
93 | struct elevator_queue *e = q->elevator; | |
94 | ||
95 | if (e && e->type->ops.mq.started_request) | |
96 | e->type->ops.mq.started_request(rq); | |
97 | } | |
98 | ||
99 | static inline void blk_mq_sched_requeue_request(struct request *rq) | |
100 | { | |
101 | struct request_queue *q = rq->q; | |
102 | struct elevator_queue *e = q->elevator; | |
103 | ||
104 | if (e && e->type->ops.mq.requeue_request) | |
105 | e->type->ops.mq.requeue_request(rq); | |
106 | } | |
107 | ||
108 | static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx) | |
109 | { | |
110 | struct elevator_queue *e = hctx->queue->elevator; | |
111 | ||
112 | if (e && e->type->ops.mq.has_work) | |
113 | return e->type->ops.mq.has_work(hctx); | |
114 | ||
115 | return false; | |
116 | } | |
117 | ||
d38d3515 OS |
118 | /* |
119 | * Mark a hardware queue as needing a restart. | |
120 | */ | |
121 | static inline void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx) | |
bd166ef1 | 122 | { |
d38d3515 | 123 | if (!test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state)) |
bd166ef1 | 124 | set_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state); |
d38d3515 OS |
125 | } |
126 | ||
bd166ef1 JA |
127 | static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx) |
128 | { | |
129 | return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state); | |
130 | } | |
131 | ||
132 | #endif |