linux/block/Kconfig.iosched
Tejun Heo 1d156646e0 blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT
blkg_rwstat is now only used by bfq-iosched and blk-throtl when on
cgroup1.  Let's move it into its own files and gate it behind a config
option.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-07 12:28:13 -07:00

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# SPDX-License-Identifier: GPL-2.0
if BLOCK
menu "IO Schedulers"
config MQ_IOSCHED_DEADLINE
tristate "MQ deadline I/O scheduler"
default y
---help---
MQ version of the deadline IO scheduler.
config MQ_IOSCHED_KYBER
tristate "Kyber I/O scheduler"
default y
---help---
The Kyber I/O scheduler is a low-overhead scheduler suitable for
multiqueue and other fast devices. Given target latencies for reads and
synchronous writes, it will self-tune queue depths to achieve that
goal.
config IOSCHED_BFQ
tristate "BFQ I/O scheduler"
---help---
BFQ I/O scheduler for BLK-MQ. BFQ distributes the bandwidth of
of the device among all processes according to their weights,
regardless of the device parameters and with any workload. It
also guarantees a low latency to interactive and soft
real-time applications. Details in
Documentation/block/bfq-iosched.rst
config BFQ_GROUP_IOSCHED
bool "BFQ hierarchical scheduling support"
depends on IOSCHED_BFQ && BLK_CGROUP
select BLK_CGROUP_RWSTAT
---help---
Enable hierarchical scheduling in BFQ, using the blkio
(cgroups-v1) or io (cgroups-v2) controller.
config BFQ_CGROUP_DEBUG
bool "BFQ IO controller debugging"
depends on BFQ_GROUP_IOSCHED
---help---
Enable some debugging help. Currently it exports additional stat
files in a cgroup which can be useful for debugging.
endmenu
endif