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| author | Christoph Hellwig <hch@lst.de> | 2014-04-15 14:14:00 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-04-15 14:18:02 -0600 |
| commit | 24d2f90309b23f2cfe016b2aebc5f0d6e01c57fd (patch) | |
| tree | 10307829129eb8f96facbb89fefbba3c0032fb46 /block/blk-mq.h | |
| parent | ed44832dea8a74f909e0187f350201402927f5e5 (diff) | |
| download | lwn-24d2f90309b23f2cfe016b2aebc5f0d6e01c57fd.tar.gz lwn-24d2f90309b23f2cfe016b2aebc5f0d6e01c57fd.zip | |
blk-mq: split out tag initialization, support shared tags
Add a new blk_mq_tag_set structure that gets set up before we initialize
the queue. A single blk_mq_tag_set structure can be shared by multiple
queues.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Modular export of blk_mq_{alloc,free}_tagset added by me.
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.h')
| -rw-r--r-- | block/blk-mq.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h index 7964dadb7d64..5fa14f19f752 100644 --- a/block/blk-mq.h +++ b/block/blk-mq.h @@ -1,6 +1,8 @@ #ifndef INT_BLK_MQ_H #define INT_BLK_MQ_H +struct blk_mq_tag_set; + struct blk_mq_ctx { struct { spinlock_t lock; @@ -46,8 +48,7 @@ void blk_mq_disable_hotplug(void); /* * CPU -> queue mappings */ -struct blk_mq_reg; -extern unsigned int *blk_mq_make_queue_map(struct blk_mq_reg *reg); +extern unsigned int *blk_mq_make_queue_map(struct blk_mq_tag_set *set); extern int blk_mq_update_queue_map(unsigned int *map, unsigned int nr_queues); void blk_mq_add_timer(struct request *rq); |