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authorJens Axboe <axboe@fb.com>2017-01-14 00:43:58 +0300
committerJens Axboe <axboe@fb.com>2017-01-17 20:04:31 +0300
commitd34849913819a5e0cbfbe724dbe79df89278c524 (patch)
tree71b427fa3b22b30dc2038448ec06936018adaee4 /include/linux/blk-mq.h
parent945ffb60c11dfb228130f3f2bdde961cecb76671 (diff)
downloadlinux-d34849913819a5e0cbfbe724dbe79df89278c524.tar.xz
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 'include/linux/blk-mq.h')
-rw-r--r--include/linux/blk-mq.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 63569eb46d15..8e4df3d6c8cd 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -153,6 +153,7 @@ enum {
BLK_MQ_F_SG_MERGE = 1 << 2,
BLK_MQ_F_DEFER_ISSUE = 1 << 4,
BLK_MQ_F_BLOCKING = 1 << 5,
+ BLK_MQ_F_NO_SCHED = 1 << 6,
BLK_MQ_F_ALLOC_POLICY_START_BIT = 8,
BLK_MQ_F_ALLOC_POLICY_BITS = 1,