1 # SPDX-License-Identifier: GPL-2.0
4 config MQ_IOSCHED_DEADLINE
5 tristate "MQ deadline I/O scheduler"
8 MQ version of the deadline IO scheduler.
10 config MQ_IOSCHED_KYBER
11 tristate "Kyber I/O scheduler"
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
20 tristate "BFQ I/O scheduler"
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
30 config BFQ_GROUP_IOSCHED
31 bool "BFQ hierarchical scheduling support"
32 depends on IOSCHED_BFQ && BLK_CGROUP
34 select BLK_CGROUP_RWSTAT
37 Enable hierarchical scheduling in BFQ, using the blkio
38 (cgroups-v1) or io (cgroups-v2) controller.
40 config BFQ_CGROUP_DEBUG
41 bool "BFQ IO controller debugging"
42 depends on BFQ_GROUP_IOSCHED
44 Enable some debugging help. Currently it exports additional stat
45 files in a cgroup which can be useful for debugging.