projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 320ae51f JA |
2 | #ifndef INT_BLK_MQ_TAG_H |
| 3 | #define INT_BLK_MQ_TAG_H | |
| 4 | ||
| 2e9bc346 CH |
5 | struct blk_mq_alloc_data; |
| 6 | ||
| 1c0706a7 JG |
7 | extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags, |
| 8 | unsigned int reserved_tags, | |
| e155b0c2 JG |
9 | int node, int alloc_policy); |
| 10 | extern void blk_mq_free_tags(struct blk_mq_tags *tags); | |
| 56b68085 JG |
11 | extern int blk_mq_init_bitmaps(struct sbitmap_queue *bitmap_tags, |
| 12 | struct sbitmap_queue *breserved_tags, | |
| 13 | unsigned int queue_depth, | |
| 14 | unsigned int reserved, | |
| 15 | int node, int alloc_policy); | |
| 320ae51f | 16 | |
| cb96a42c | 17 | extern unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data); |
| 349302da JA |
18 | unsigned long blk_mq_get_tags(struct blk_mq_alloc_data *data, int nr_tags, |
| 19 | unsigned int *offset); | |
| cae740a0 JG |
20 | extern void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx, |
| 21 | unsigned int tag); | |
| f794f335 | 22 | void blk_mq_put_tags(struct blk_mq_tags *tags, int *tag_array, int nr_tags); |
| 70f36b60 JA |
23 | extern int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx, |
| 24 | struct blk_mq_tags **tags, | |
| 25 | unsigned int depth, bool can_grow); | |
| 079a2e3e | 26 | extern void blk_mq_tag_resize_shared_tags(struct blk_mq_tag_set *set, |
| 32bc15af | 27 | unsigned int size); |
| 079a2e3e | 28 | extern void blk_mq_tag_update_sched_shared_tags(struct request_queue *q); |
| 32bc15af | 29 | |
| aed3ea94 | 30 | extern void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool); |
| fc39f8d2 | 31 | void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_tag_iter_fn *fn, |
| 0bf6cd5b | 32 | void *priv); |
| 602380d2 ML |
33 | void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn, |
| 34 | void *priv); | |
| 320ae51f | 35 | |
| 88459642 OS |
36 | static inline struct sbq_wait_state *bt_wait_ptr(struct sbitmap_queue *bt, |
| 37 | struct blk_mq_hw_ctx *hctx) | |
| 38 | { | |
| 39 | if (!hctx) | |
| 40 | return &bt->ws[0]; | |
| 41 | return sbq_wait_ptr(bt, &hctx->wait_index); | |
| 42 | } | |
| 43 | ||
| 320ae51f | 44 | enum { |
| 419c3d5e | 45 | BLK_MQ_NO_TAG = -1U, |
| 5385fa47 | 46 | BLK_MQ_TAG_MIN = 1, |
| 419c3d5e | 47 | BLK_MQ_TAG_MAX = BLK_MQ_NO_TAG - 1, |
| 320ae51f JA |
48 | }; |
| 49 | ||
| ee78ec10 | 50 | extern void __blk_mq_tag_busy(struct blk_mq_hw_ctx *); |
| 0d2602ca JA |
51 | extern void __blk_mq_tag_idle(struct blk_mq_hw_ctx *); |
| 52 | ||
| ee78ec10 | 53 | static inline void blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx) |
| 0d2602ca | 54 | { |
| ee78ec10 LS |
55 | if (hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED) |
| 56 | __blk_mq_tag_busy(hctx); | |
| 0d2602ca JA |
57 | } |
| 58 | ||
| 59 | static inline void blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx) | |
| 60 | { | |
| 51db1c37 | 61 | if (!(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) |
| 0d2602ca JA |
62 | return; |
| 63 | ||
| 64 | __blk_mq_tag_idle(hctx); | |
| 65 | } | |
| 66 | ||
| 415b806d SG |
67 | static inline bool blk_mq_tag_is_reserved(struct blk_mq_tags *tags, |
| 68 | unsigned int tag) | |
| 69 | { | |
| 70 | return tag < tags->nr_reserved_tags; | |
| 71 | } | |
| 72 | ||
| 320ae51f | 73 | #endif |