[mirror_ubuntu-jammy-kernel.git] / block / Kconfig.iosched

# 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
Commit	Line	Data
	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