[linux-block.git] / block / Kconfig.iosched

# SPDX-License-Identifier: GPL-2.0
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"
	select BLK_ICQ
	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
       default y
       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
Commit	Line	Data
	1	# SPDX-License-Identifier: GPL-2.0
	2	menu "IO Schedulers"
	3
	4	config MQ_IOSCHED_DEADLINE
	5	tristate "MQ deadline I/O scheduler"
	6	default y
	7	help
	8	MQ version of the deadline IO scheduler.
	9
	10	config 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
	19	config 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
	30	config 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
	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