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| author | Jens Axboe <axboe@fb.com> | 2017-01-13 14:43:58 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-01-17 10:04:31 -0700 |
| commit | d34849913819a5e0cbfbe724dbe79df89278c524 (patch) | |
| tree | 71b427fa3b22b30dc2038448ec06936018adaee4 /block/blk-mq-sched.h | |
| parent | 945ffb60c11dfb228130f3f2bdde961cecb76671 (diff) | |
| download | linux-d34849913819a5e0cbfbe724dbe79df89278c524.tar.gz linux-d34849913819a5e0cbfbe724dbe79df89278c524.tar.bz2 linux-d34849913819a5e0cbfbe724dbe79df89278c524.zip | |
blk-mq-sched: allow setting of default IO scheduler
Add Kconfig entries to manage what devices get assigned an MQ
scheduler, and add a blk-mq flag for drivers to opt out of scheduling.
The latter is useful for admin type queues that still allocate a blk-mq
queue and tag set, but aren't use for normal IO.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Diffstat (limited to 'block/blk-mq-sched.h')
| -rw-r--r-- | block/blk-mq-sched.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h index 35c49e2e008a..6b465bc7014c 100644 --- a/block/blk-mq-sched.h +++ b/block/blk-mq-sched.h @@ -28,6 +28,8 @@ void blk_mq_sched_move_to_dispatch(struct blk_mq_hw_ctx *hctx, int blk_mq_sched_setup(struct request_queue *q); void blk_mq_sched_teardown(struct request_queue *q); +int blk_mq_sched_init(struct request_queue *q); + static inline bool blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio) { |