Kconfig.iosched

 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	select BLK_ICQ
22	help
23	BFQ I/O scheduler for BLK-MQ. BFQ distributes the bandwidth of
24	of the device among all processes according to their weights,
25	regardless of the device parameters and with any workload. It
26	also guarantees a low latency to interactive and soft
27	real-time applications.  Details in
28	Documentation/block/bfq-iosched.rst
29
30config BFQ_GROUP_IOSCHED
31       bool "BFQ hierarchical scheduling support"
32       depends on IOSCHED_BFQ && BLK_CGROUP
33       default y
34       select BLK_CGROUP_RWSTAT
35	help
36
37       Enable hierarchical scheduling in BFQ, using the blkio
38       (cgroups-v1) or io (cgroups-v2) controller.
39
40config BFQ_CGROUP_DEBUG
41	bool "BFQ IO controller debugging"
42	depends on BFQ_GROUP_IOSCHED
43	help
44	Enable some debugging help. Currently it exports additional stat
45	files in a cgroup which can be useful for debugging.
46
47endmenu