mirror of
https://github.com/torvalds/linux.git
synced 2024-11-13 15:41:39 +00:00
e028f167ec
This is in the fast path of driver issue or completion, and it's a single array index operation. Move it inline to avoid a function call for it. This does mean making struct blk_mq_tags block layer public, but there's not really much in there. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef INT_BLK_MQ_TAG_H
|
|
#define INT_BLK_MQ_TAG_H
|
|
|
|
struct blk_mq_alloc_data;
|
|
|
|
extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags,
|
|
unsigned int reserved_tags,
|
|
int node, int alloc_policy);
|
|
extern void blk_mq_free_tags(struct blk_mq_tags *tags);
|
|
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 unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data);
|
|
unsigned long blk_mq_get_tags(struct blk_mq_alloc_data *data, int nr_tags,
|
|
unsigned int *offset);
|
|
extern void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
|
|
unsigned int tag);
|
|
void blk_mq_put_tags(struct blk_mq_tags *tags, int *tag_array, int nr_tags);
|
|
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_tags(struct blk_mq_tag_set *set,
|
|
unsigned int size);
|
|
extern void blk_mq_tag_update_sched_shared_tags(struct request_queue *q);
|
|
|
|
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
|