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73 lines
2.2 KiB
73 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef INT_BLK_MQ_TAG_H |
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#define INT_BLK_MQ_TAG_H |
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struct blk_mq_alloc_data; |
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extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags, |
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unsigned int reserved_tags, |
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int node, int alloc_policy); |
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extern void blk_mq_free_tags(struct blk_mq_tags *tags); |
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extern int blk_mq_init_bitmaps(struct sbitmap_queue *bitmap_tags, |
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struct sbitmap_queue *breserved_tags, |
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unsigned int queue_depth, |
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unsigned int reserved, |
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int node, int alloc_policy); |
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extern unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data); |
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unsigned long blk_mq_get_tags(struct blk_mq_alloc_data *data, int nr_tags, |
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unsigned int *offset); |
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extern void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx, |
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unsigned int tag); |
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void blk_mq_put_tags(struct blk_mq_tags *tags, int *tag_array, int nr_tags); |
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extern int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx, |
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struct blk_mq_tags **tags, |
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unsigned int depth, bool can_grow); |
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extern void blk_mq_tag_resize_shared_tags(struct blk_mq_tag_set *set, |
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unsigned int size); |
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extern void blk_mq_tag_update_sched_shared_tags(struct request_queue *q); |
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extern void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool); |
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void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_tag_iter_fn *fn, |
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void *priv); |
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void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn, |
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void *priv); |
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static inline struct sbq_wait_state *bt_wait_ptr(struct sbitmap_queue *bt, |
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struct blk_mq_hw_ctx *hctx) |
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{ |
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if (!hctx) |
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return &bt->ws[0]; |
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return sbq_wait_ptr(bt, &hctx->wait_index); |
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} |
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enum { |
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BLK_MQ_NO_TAG = -1U, |
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BLK_MQ_TAG_MIN = 1, |
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BLK_MQ_TAG_MAX = BLK_MQ_NO_TAG - 1, |
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}; |
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extern void __blk_mq_tag_busy(struct blk_mq_hw_ctx *); |
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extern void __blk_mq_tag_idle(struct blk_mq_hw_ctx *); |
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static inline void blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx) |
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{ |
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if (hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED) |
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__blk_mq_tag_busy(hctx); |
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} |
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static inline void blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx) |
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{ |
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if (!(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) |
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return; |
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__blk_mq_tag_idle(hctx); |
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} |
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static inline bool blk_mq_tag_is_reserved(struct blk_mq_tags *tags, |
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unsigned int tag) |
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{ |
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return tag < tags->nr_reserved_tags; |
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} |
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#endif
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