block/Kconfig.iosched

   1 # SPDX-License-Identifier: GPL-2.0
   2 if BLOCK
   3
   4 menu "IO Schedulers"
   5
   6 config MQ_IOSCHED_DEADLINE
   7         tristate "MQ deadline I/O scheduler"
   8         default y
   9         help
  10           MQ version of the deadline IO scheduler.
  11
  12 config 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
  21 config 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
  31 config 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
  40 config 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
  47 endmenu
  48
  49 endif