1# SPDX-License-Identifier: GPL-2.0 2if BLOCK 3 4menu "IO Schedulers" 5 6config MQ_IOSCHED_DEADLINE 7 tristate "MQ deadline I/O scheduler" 8 default y 9 ---help--- 10 MQ version of the deadline IO scheduler. 11 12config MQ_IOSCHED_KYBER 13 tristate "Kyber I/O scheduler" 14 default y 15 ---help--- 16 The Kyber I/O scheduler is a low-overhead scheduler suitable for 17 multiqueue and other fast devices. Given target latencies for reads and 18 synchronous writes, it will self-tune queue depths to achieve that 19 goal. 20 21config IOSCHED_BFQ 22 tristate "BFQ I/O scheduler" 23 ---help--- 24 BFQ I/O scheduler for BLK-MQ. BFQ distributes the bandwidth of 25 of the device among all processes according to their weights, 26 regardless of the device parameters and with any workload. It 27 also guarantees a low latency to interactive and soft 28 real-time applications. Details in 29 Documentation/block/bfq-iosched.rst 30 31config BFQ_GROUP_IOSCHED 32 bool "BFQ hierarchical scheduling support" 33 depends on IOSCHED_BFQ && BLK_CGROUP 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 48 49endif 50