1# SPDX-License-Identifier: GPL-2.0
2menu "IO Schedulers"
3
4config MQ_IOSCHED_DEADLINE
5	tristate "MQ deadline I/O scheduler"
6	default y
7	help
8	  MQ version of the deadline IO scheduler.
9
10config MQ_IOSCHED_KYBER
11	tristate "Kyber I/O scheduler"
12	default y
13	help
14	  The Kyber I/O scheduler is a low-overhead scheduler suitable for
15	  multiqueue and other fast devices. Given target latencies for reads and
16	  synchronous writes, it will self-tune queue depths to achieve that
17	  goal.
18
19config IOSCHED_BFQ
20	tristate "BFQ I/O scheduler"
21	help
22	BFQ I/O scheduler for BLK-MQ. BFQ distributes the bandwidth of
23	of the device among all processes according to their weights,
24	regardless of the device parameters and with any workload. It
25	also guarantees a low latency to interactive and soft
26	real-time applications.  Details in
27	Documentation/block/bfq-iosched.rst
28
29config BFQ_GROUP_IOSCHED
30       bool "BFQ hierarchical scheduling support"
31       depends on IOSCHED_BFQ && BLK_CGROUP
32       select BLK_CGROUP_RWSTAT
33	help
34
35       Enable hierarchical scheduling in BFQ, using the blkio
36       (cgroups-v1) or io (cgroups-v2) controller.
37
38config BFQ_CGROUP_DEBUG
39	bool "BFQ IO controller debugging"
40	depends on BFQ_GROUP_IOSCHED
41	help
42	Enable some debugging help. Currently it exports additional stat
43	files in a cgroup which can be useful for debugging.
44
45endmenu
46