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authorJens Axboe <axboe@fb.com>2017-01-13 14:43:58 -0700
committerJens Axboe <axboe@fb.com>2017-01-17 10:04:31 -0700
commitd34849913819a5e0cbfbe724dbe79df89278c524 (patch)
tree71b427fa3b22b30dc2038448ec06936018adaee4 /block/blk-mq-sched.h
parent945ffb60c11dfb228130f3f2bdde961cecb76671 (diff)
downloadlinux-d34849913819a5e0cbfbe724dbe79df89278c524.tar.bz2
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.h2
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)
{