projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| bd166ef1 JA |
8 | void blk_mq_sched_free_hctx_data(struct request_queue *q, |
| 9 | void (*exit)(struct blk_mq_hw_ctx *)); | |
| 10 | ||
| 44e8c2bf | 11 | void blk_mq_sched_assign_ioc(struct request *rq, struct bio *bio); |
| bd166ef1 JA |
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 | 20 | void blk_mq_sched_insert_request(struct request *rq, bool at_head, |
| 9e97d295 | 21 | bool run_queue, bool async); |
| bd6737f1 JA |
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 | ||
| bd166ef1 JA |
36 | static inline bool |
| 37 | blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio) | |
| 38 | { | |
| 9bddeb2a | 39 | if (blk_queue_nomerges(q) || !bio_mergeable(bio)) |
| bd166ef1 JA |
40 | return false; |
| 41 | ||
| 42 | return __blk_mq_sched_bio_merge(q, bio); | |
| 43 | } | |
| 44 | ||
| bd166ef1 JA |
45 | static inline bool |
| 46 | blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq, | |
| 47 | struct bio *bio) | |
| 48 | { | |
| 49 | struct elevator_queue *e = q->elevator; | |
| 50 | ||
| 51 | if (e && e->type->ops.mq.allow_merge) | |
| 52 | return e->type->ops.mq.allow_merge(q, rq, bio); | |
| 53 | ||
| 54 | return true; | |
| 55 | } | |
| 56 | ||
| c05f8525 | 57 | static inline void blk_mq_sched_completed_request(struct request *rq) |
| bd166ef1 | 58 | { |
| c05f8525 | 59 | struct elevator_queue *e = rq->q->elevator; |
| bd166ef1 JA |
60 | |
| 61 | if (e && e->type->ops.mq.completed_request) | |
| c05f8525 | 62 | e->type->ops.mq.completed_request(rq); |
| bd166ef1 JA |
63 | } |
| 64 | ||
| 65 | static inline void blk_mq_sched_started_request(struct request *rq) | |
| 66 | { | |
| 67 | struct request_queue *q = rq->q; | |
| 68 | struct elevator_queue *e = q->elevator; | |
| 69 | ||
| 70 | if (e && e->type->ops.mq.started_request) | |
| 71 | e->type->ops.mq.started_request(rq); | |
| 72 | } | |
| 73 | ||
| 74 | static inline void blk_mq_sched_requeue_request(struct request *rq) | |
| 75 | { | |
| 76 | struct request_queue *q = rq->q; | |
| 77 | struct elevator_queue *e = q->elevator; | |
| 78 | ||
| 79 | if (e && e->type->ops.mq.requeue_request) | |
| 80 | e->type->ops.mq.requeue_request(rq); | |
| 81 | } | |
| 82 | ||
| 83 | static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx) | |
| 84 | { | |
| 85 | struct elevator_queue *e = hctx->queue->elevator; | |
| 86 | ||
| 87 | if (e && e->type->ops.mq.has_work) | |
| 88 | return e->type->ops.mq.has_work(hctx); | |
| 89 | ||
| 90 | return false; | |
| 91 | } | |
| 92 | ||
| bd166ef1 JA |
93 | static inline bool blk_mq_sched_needs_restart(struct blk_mq_hw_ctx *hctx) |
| 94 | { | |
| 95 | return test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state); | |
| 96 | } | |
| 97 | ||
| 98 | #endif |