diff options
Diffstat (limited to 'block/blk-mq-tag.h')
| -rw-r--r-- | block/blk-mq-tag.h | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h deleted file mode 100644 index 8ed55af08427..000000000000 --- a/block/blk-mq-tag.h +++ /dev/null @@ -1,97 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef INT_BLK_MQ_TAG_H -#define INT_BLK_MQ_TAG_H - -/* - * Tag address space map. - */ -struct blk_mq_tags { - unsigned int nr_tags; - unsigned int nr_reserved_tags; - - atomic_t active_queues; - - struct sbitmap_queue *bitmap_tags; - struct sbitmap_queue *breserved_tags; - - struct sbitmap_queue __bitmap_tags; - struct sbitmap_queue __breserved_tags; - - struct request **rqs; - struct request **static_rqs; - struct list_head page_list; - - /* - * used to clear request reference in rqs[] before freeing one - * request pool - */ - spinlock_t lock; -}; - -extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags, - unsigned int reserved_tags, - int node, unsigned int flags); -extern void blk_mq_free_tags(struct blk_mq_tags *tags, unsigned int flags); -extern int blk_mq_init_bitmaps(struct sbitmap_queue *bitmap_tags, - struct sbitmap_queue *breserved_tags, - unsigned int queue_depth, - unsigned int reserved, - int node, int alloc_policy); - -extern int blk_mq_init_shared_sbitmap(struct blk_mq_tag_set *set); -extern void blk_mq_exit_shared_sbitmap(struct blk_mq_tag_set *set); -extern unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data); -extern void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx, - unsigned int tag); -extern int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx, - struct blk_mq_tags **tags, - unsigned int depth, bool can_grow); -extern void blk_mq_tag_resize_shared_sbitmap(struct blk_mq_tag_set *set, - unsigned int size); - -extern void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool); -void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn, - void *priv); -void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn, - void *priv); - -static inline struct sbq_wait_state *bt_wait_ptr(struct sbitmap_queue *bt, - struct blk_mq_hw_ctx *hctx) -{ - if (!hctx) - return &bt->ws[0]; - return sbq_wait_ptr(bt, &hctx->wait_index); -} - -enum { - BLK_MQ_NO_TAG = -1U, - BLK_MQ_TAG_MIN = 1, - BLK_MQ_TAG_MAX = BLK_MQ_NO_TAG - 1, -}; - -extern bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *); -extern void __blk_mq_tag_idle(struct blk_mq_hw_ctx *); - -static inline bool blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx) -{ - if (!(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) - return false; - - return __blk_mq_tag_busy(hctx); -} - -static inline void blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx) -{ - if (!(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) - return; - - __blk_mq_tag_idle(hctx); -} - -static inline bool blk_mq_tag_is_reserved(struct blk_mq_tags *tags, - unsigned int tag) -{ - return tag < tags->nr_reserved_tags; -} - -#endif |
