diff options
| author | Jens Axboe <axboe@kernel.dk> | 2018-10-29 22:06:14 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-11-07 23:44:59 +0300 |
| commit | ed76e329d74a4b15ac0f5fd3adbd52ec0178a134 (patch) | |
| tree | 628ce9d3ac0997faef04f2d9e4f4d169594fe366 /include/linux/blk-mq.h | |
| parent | a8908939af569ce2419f43fd56eeaf003bc3d85d (diff) | |
| download | linux-ed76e329d74a4b15ac0f5fd3adbd52ec0178a134.tar.xz | |
blk-mq: abstract out queue map
This is in preparation for allowing multiple sets of maps per
queue, if so desired.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blk-mq.h')
| -rw-r--r-- | include/linux/blk-mq.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index d83a26fb37e5..176164888628 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -74,10 +74,19 @@ struct blk_mq_hw_ctx { struct srcu_struct srcu[0]; }; +struct blk_mq_queue_map { + unsigned int *mq_map; + unsigned int nr_queues; +}; + +enum { + HCTX_MAX_TYPES = 1, +}; + struct blk_mq_tag_set { - unsigned int *mq_map; + struct blk_mq_queue_map map[HCTX_MAX_TYPES]; const struct blk_mq_ops *ops; - unsigned int nr_hw_queues; + unsigned int nr_hw_queues; /* nr hw queues across maps */ unsigned int queue_depth; /* max hw supported */ unsigned int reserved_tags; unsigned int cmd_size; /* per-request extra data */ @@ -295,7 +304,7 @@ void blk_mq_freeze_queue_wait(struct request_queue *q); int blk_mq_freeze_queue_wait_timeout(struct request_queue *q, unsigned long timeout); -int blk_mq_map_queues(struct blk_mq_tag_set *set); +int blk_mq_map_queues(struct blk_mq_queue_map *qmap); void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues); void blk_mq_quiesce_queue_nowait(struct request_queue *q); |