[linux-block.git] / mm / damon / Kconfig

# SPDX-License-Identifier: GPL-2.0-only

menu "Data Access Monitoring"

config DAMON
	bool "DAMON: Data Access Monitoring Framework"
	help
	  This builds a framework that allows kernel subsystems to monitor
	  access frequency of each memory region. The information can be useful
	  for performance-centric DRAM level memory management.

	  See https://damonitor.github.io/doc/html/latest-damon/index.html for
	  more information.

config DAMON_KUNIT_TEST
	bool "Test for damon" if !KUNIT_ALL_TESTS
	depends on DAMON && KUNIT=y
	default KUNIT_ALL_TESTS
	help
	  This builds the DAMON Kunit test suite.

	  For more information on KUnit and unit tests in general, please refer
	  to the KUnit documentation.

	  If unsure, say N.

config DAMON_VADDR
	bool "Data access monitoring operations for virtual address spaces"
	depends on DAMON && MMU
	select PAGE_IDLE_FLAG
	help
	  This builds the default data access monitoring operations for DAMON
	  that work for virtual address spaces.

config DAMON_PADDR
	bool "Data access monitoring operations for the physical address space"
	depends on DAMON && MMU
	select PAGE_IDLE_FLAG
	help
	  This builds the default data access monitoring operations for DAMON
	  that works for the physical address space.

config DAMON_VADDR_KUNIT_TEST
	bool "Test for DAMON operations" if !KUNIT_ALL_TESTS
	depends on DAMON_VADDR && KUNIT=y
	default KUNIT_ALL_TESTS
	help
	  This builds the DAMON virtual addresses operations Kunit test suite.

	  For more information on KUnit and unit tests in general, please refer
	  to the KUnit documentation.

	  If unsure, say N.

config DAMON_SYSFS
	bool "DAMON sysfs interface"
	depends on DAMON && SYSFS
	help
	  This builds the sysfs interface for DAMON.  The user space can use
	  the interface for arbitrary data access monitoring.

config DAMON_DBGFS
	bool "DAMON debugfs interface"
	depends on DAMON_VADDR && DAMON_PADDR && DEBUG_FS
	help
	  This builds the debugfs interface for DAMON.  The user space admins
	  can use the interface for arbitrary data access monitoring.

	  If unsure, say N.

config DAMON_DBGFS_KUNIT_TEST
	bool "Test for damon debugfs interface" if !KUNIT_ALL_TESTS
	depends on DAMON_DBGFS && KUNIT=y
	default KUNIT_ALL_TESTS
	help
	  This builds the DAMON debugfs interface Kunit test suite.

	  For more information on KUnit and unit tests in general, please refer
	  to the KUnit documentation.

	  If unsure, say N.

config DAMON_RECLAIM
	bool "Build DAMON-based reclaim (DAMON_RECLAIM)"
	depends on DAMON_PADDR
	help
	  This builds the DAMON-based reclamation subsystem.  It finds pages
	  that not accessed for a long time (cold) using DAMON and reclaim
	  those.

	  This is suggested to be used as a proactive and lightweight
	  reclamation under light memory pressure, while the traditional page
	  scanning-based reclamation is used for heavy pressure.

config DAMON_LRU_SORT
	bool "Build DAMON-based LRU-lists sorting (DAMON_LRU_SORT)"
	depends on DAMON_PADDR
	help
	  This builds the DAMON-based LRU-lists sorting subsystem.  It tries to
	  protect frequently accessed (hot) pages while rarely accessed (cold)
	  pages reclaimed first under memory pressure.

endmenu
Commit	Line	Data
2224d848 SP	1	# SPDX-License-Identifier: GPL-2.0-only
	2
	3	menu "Data Access Monitoring"
	4
	5	config DAMON
	6	bool "DAMON: Data Access Monitoring Framework"
	7	help
	8	This builds a framework that allows kernel subsystems to monitor
	9	access frequency of each memory region. The information can be useful
	10	for performance-centric DRAM level memory management.
	11
	12	See https://damonitor.github.io/doc/html/latest-damon/index.html for
	13	more information.
	14
17ccae8b SP	15	config DAMON_KUNIT_TEST
	16	bool "Test for damon" if !KUNIT_ALL_TESTS
	17	depends on DAMON && KUNIT=y
	18	default KUNIT_ALL_TESTS
	19	help
	20	This builds the DAMON Kunit test suite.
	21
	22	For more information on KUnit and unit tests in general, please refer
	23	to the KUnit documentation.
	24
	25	If unsure, say N.
	26
3f49584b	27	config DAMON_VADDR
f7d911c3	28	bool "Data access monitoring operations for virtual address spaces"
3f49584b SP	29	depends on DAMON && MMU
	30	select PAGE_IDLE_FLAG
	31	help
f7d911c3	32	This builds the default data access monitoring operations for DAMON
f24b0626	33	that work for virtual address spaces.
3f49584b	34
a28397be	35	config DAMON_PADDR
f7d911c3	36	bool "Data access monitoring operations for the physical address space"
a28397be SP	37	depends on DAMON && MMU
	38	select PAGE_IDLE_FLAG
	39	help
f7d911c3	40	This builds the default data access monitoring operations for DAMON
a28397be SP	41	that works for the physical address space.
a28397be SP	42
17ccae8b	43	config DAMON_VADDR_KUNIT_TEST
f7d911c3	44	bool "Test for DAMON operations" if !KUNIT_ALL_TESTS
17ccae8b SP	45	depends on DAMON_VADDR && KUNIT=y
	46	default KUNIT_ALL_TESTS
	47	help
f7d911c3	48	This builds the DAMON virtual addresses operations Kunit test suite.
17ccae8b SP	49
	50	For more information on KUnit and unit tests in general, please refer
	51	to the KUnit documentation.
	52
	53	If unsure, say N.
	54
c951cd3b SP	55	config DAMON_SYSFS
	56	bool "DAMON sysfs interface"
	57	depends on DAMON && SYSFS
	58	help
	59	This builds the sysfs interface for DAMON. The user space can use
	60	the interface for arbitrary data access monitoring.
	61
4bc05954 SP	62	config DAMON_DBGFS
4bc05954 SP	63	bool "DAMON debugfs interface"
c026291a	64	depends on DAMON_VADDR && DAMON_PADDR && DEBUG_FS
4bc05954 SP	65	help
	66	This builds the debugfs interface for DAMON. The user space admins
	67	can use the interface for arbitrary data access monitoring.
	68
	69	If unsure, say N.
	70
17ccae8b SP	71	config DAMON_DBGFS_KUNIT_TEST
	72	bool "Test for damon debugfs interface" if !KUNIT_ALL_TESTS
	73	depends on DAMON_DBGFS && KUNIT=y
	74	default KUNIT_ALL_TESTS
	75	help
	76	This builds the DAMON debugfs interface Kunit test suite.
	77
	78	For more information on KUnit and unit tests in general, please refer
	79	to the KUnit documentation.
	80
	81	If unsure, say N.
	82
43b0536c SP	83	config DAMON_RECLAIM
	84	bool "Build DAMON-based reclaim (DAMON_RECLAIM)"
	85	depends on DAMON_PADDR
	86	help
	87	This builds the DAMON-based reclamation subsystem. It finds pages
	88	that not accessed for a long time (cold) using DAMON and reclaim
	89	those.
	90
	91	This is suggested to be used as a proactive and lightweight
	92	reclamation under light memory pressure, while the traditional page
	93	scanning-based reclamation is used for heavy pressure.
	94
40e983cc SP	95	config DAMON_LRU_SORT
	96	bool "Build DAMON-based LRU-lists sorting (DAMON_LRU_SORT)"
	97	depends on DAMON_PADDR
	98	help
	99	This builds the DAMON-based LRU-lists sorting subsystem. It tries to
	100	protect frequently accessed (hot) pages while rarely accessed (cold)
	101	pages reclaimed first under memory pressure.
	102
2224d848	103	endmenu