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block/blk-mq-sched.h
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/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef BLK_MQ_SCHED_H #define BLK_MQ_SCHED_H #include "blk-mq.h" #include "blk-mq-tag.h" |
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void blk_mq_sched_free_hctx_data(struct request_queue *q, void (*exit)(struct blk_mq_hw_ctx *)); |
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void blk_mq_sched_assign_ioc(struct request *rq); |
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void blk_mq_sched_request_inserted(struct request *rq); |
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bool blk_mq_sched_try_merge(struct request_queue *q, struct bio *bio, |
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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); |
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bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq); |
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void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx); |
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void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx); |
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void blk_mq_sched_insert_request(struct request *rq, bool at_head, |
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bool run_queue, bool async); |
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void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx, |
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struct blk_mq_ctx *ctx, struct list_head *list, bool run_queue_async); |
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void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx); |
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int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e); |
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void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e); |
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void blk_mq_sched_free_requests(struct request_queue *q); |
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static inline bool |
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blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio, unsigned int nr_segs) |
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{ |
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if (blk_queue_nomerges(q) || !bio_mergeable(bio)) |
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return false; |
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return __blk_mq_sched_bio_merge(q, bio, nr_segs); |
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} |
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static inline bool blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq, struct bio *bio) { struct elevator_queue *e = q->elevator; |
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if (e && e->type->ops.allow_merge) return e->type->ops.allow_merge(q, rq, bio); |
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return true; } |
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static inline void blk_mq_sched_completed_request(struct request *rq, u64 now) |
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{ |
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struct elevator_queue *e = rq->q->elevator; |
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if (e && e->type->ops.completed_request) e->type->ops.completed_request(rq, now); |
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} |
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static inline void blk_mq_sched_requeue_request(struct request *rq) { struct request_queue *q = rq->q; struct elevator_queue *e = q->elevator; |
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if (e && e->type->ops.requeue_request) e->type->ops.requeue_request(rq); |
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} static inline bool blk_mq_sched_has_work(struct blk_mq_hw_ctx *hctx) { struct elevator_queue *e = hctx->queue->elevator; |
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if (e && e->type->ops.has_work) return e->type->ops.has_work(hctx); |
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return false; } |
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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 |