1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 2
3 menu "Data Access Monitoring" 3 menu "Data Access Monitoring"
4 4
5 config DAMON 5 config DAMON
6 bool "DAMON: Data Access Monitoring Fr 6 bool "DAMON: Data Access Monitoring Framework"
7 help 7 help
8 This builds a framework that allows 8 This builds a framework that allows kernel subsystems to monitor
9 access frequency of each memory regi 9 access frequency of each memory region. The information can be useful
10 for performance-centric DRAM level m 10 for performance-centric DRAM level memory management.
11 11
12 See https://www.kernel.org/doc/html/ !! 12 See https://damonitor.github.io/doc/html/latest-damon/index.html for
13 more information. 13 more information.
14 14
15 config DAMON_KUNIT_TEST 15 config DAMON_KUNIT_TEST
16 bool "Test for damon" if !KUNIT_ALL_TE 16 bool "Test for damon" if !KUNIT_ALL_TESTS
17 depends on DAMON && KUNIT=y 17 depends on DAMON && KUNIT=y
18 default KUNIT_ALL_TESTS 18 default KUNIT_ALL_TESTS
19 help 19 help
20 This builds the DAMON Kunit test sui 20 This builds the DAMON Kunit test suite.
21 21
22 For more information on KUnit and un 22 For more information on KUnit and unit tests in general, please refer
23 to the KUnit documentation. 23 to the KUnit documentation.
24 24
25 If unsure, say N. 25 If unsure, say N.
26 26
27 config DAMON_VADDR 27 config DAMON_VADDR
28 bool "Data access monitoring operation 28 bool "Data access monitoring operations for virtual address spaces"
29 depends on DAMON && MMU 29 depends on DAMON && MMU
30 select PAGE_IDLE_FLAG 30 select PAGE_IDLE_FLAG
31 help 31 help
32 This builds the default data access 32 This builds the default data access monitoring operations for DAMON
33 that work for virtual address spaces 33 that work for virtual address spaces.
34 34
35 config DAMON_PADDR 35 config DAMON_PADDR
36 bool "Data access monitoring operation 36 bool "Data access monitoring operations for the physical address space"
37 depends on DAMON && MMU 37 depends on DAMON && MMU
38 select PAGE_IDLE_FLAG 38 select PAGE_IDLE_FLAG
39 help 39 help
40 This builds the default data access 40 This builds the default data access monitoring operations for DAMON
41 that works for the physical address 41 that works for the physical address space.
42 42
43 config DAMON_VADDR_KUNIT_TEST 43 config DAMON_VADDR_KUNIT_TEST
44 bool "Test for DAMON operations" if !K 44 bool "Test for DAMON operations" if !KUNIT_ALL_TESTS
45 depends on DAMON_VADDR && KUNIT=y 45 depends on DAMON_VADDR && KUNIT=y
46 default KUNIT_ALL_TESTS 46 default KUNIT_ALL_TESTS
47 help 47 help
48 This builds the DAMON virtual addres 48 This builds the DAMON virtual addresses operations Kunit test suite.
49 49
50 For more information on KUnit and un 50 For more information on KUnit and unit tests in general, please refer
51 to the KUnit documentation. 51 to the KUnit documentation.
52 52
53 If unsure, say N. 53 If unsure, say N.
54 54
55 config DAMON_SYSFS 55 config DAMON_SYSFS
56 bool "DAMON sysfs interface" 56 bool "DAMON sysfs interface"
57 depends on DAMON && SYSFS 57 depends on DAMON && SYSFS
58 help 58 help
59 This builds the sysfs interface for 59 This builds the sysfs interface for DAMON. The user space can use
60 the interface for arbitrary data acc 60 the interface for arbitrary data access monitoring.
61 61
62 config DAMON_SYSFS_KUNIT_TEST !! 62 config DAMON_DBGFS
63 bool "Test for damon debugfs interface <<
64 depends on DAMON_SYSFS && KUNIT=y <<
65 default KUNIT_ALL_TESTS <<
66 help <<
67 This builds the DAMON sysfs interfac <<
68 <<
69 For more information on KUnit and un <<
70 to the KUnit documentation. <<
71 <<
72 If unsure, say N. <<
73 <<
74 config DAMON_DBGFS_DEPRECATED <<
75 bool "DAMON debugfs interface (DEPRECA 63 bool "DAMON debugfs interface (DEPRECATED!)"
76 depends on DAMON_VADDR && DAMON_PADDR 64 depends on DAMON_VADDR && DAMON_PADDR && DEBUG_FS
77 help 65 help
78 This builds the debugfs interface fo 66 This builds the debugfs interface for DAMON. The user space admins
79 can use the interface for arbitrary 67 can use the interface for arbitrary data access monitoring.
80 68
81 If unsure, say N. 69 If unsure, say N.
82 70
83 This is deprecated, so users should 71 This is deprecated, so users should move to the sysfs interface
84 (DAMON_SYSFS). If you depend on thi 72 (DAMON_SYSFS). If you depend on this and cannot move, please report
85 your usecase to damon@lists.linux.de 73 your usecase to damon@lists.linux.dev and linux-mm@kvack.org.
86 <<
87 config DAMON_DBGFS <<
88 bool <<
89 default y <<
90 depends on DAMON_DBGFS_DEPRECATED <<
91 74
92 config DAMON_DBGFS_KUNIT_TEST 75 config DAMON_DBGFS_KUNIT_TEST
93 bool "Test for damon debugfs interface 76 bool "Test for damon debugfs interface" if !KUNIT_ALL_TESTS
94 depends on DAMON_DBGFS && KUNIT=y 77 depends on DAMON_DBGFS && KUNIT=y
95 default KUNIT_ALL_TESTS 78 default KUNIT_ALL_TESTS
96 help 79 help
97 This builds the DAMON debugfs interf 80 This builds the DAMON debugfs interface Kunit test suite.
98 81
99 For more information on KUnit and un 82 For more information on KUnit and unit tests in general, please refer
100 to the KUnit documentation. 83 to the KUnit documentation.
101 84
102 If unsure, say N. 85 If unsure, say N.
103 86
104 config DAMON_RECLAIM 87 config DAMON_RECLAIM
105 bool "Build DAMON-based reclaim (DAMON 88 bool "Build DAMON-based reclaim (DAMON_RECLAIM)"
106 depends on DAMON_PADDR 89 depends on DAMON_PADDR
107 help 90 help
108 This builds the DAMON-based reclamat 91 This builds the DAMON-based reclamation subsystem. It finds pages
109 that not accessed for a long time (c 92 that not accessed for a long time (cold) using DAMON and reclaim
110 those. 93 those.
111 94
112 This is suggested to be used as a pr 95 This is suggested to be used as a proactive and lightweight
113 reclamation under light memory press 96 reclamation under light memory pressure, while the traditional page
114 scanning-based reclamation is used f 97 scanning-based reclamation is used for heavy pressure.
115 98
116 config DAMON_LRU_SORT 99 config DAMON_LRU_SORT
117 bool "Build DAMON-based LRU-lists sort 100 bool "Build DAMON-based LRU-lists sorting (DAMON_LRU_SORT)"
118 depends on DAMON_PADDR 101 depends on DAMON_PADDR
119 help 102 help
120 This builds the DAMON-based LRU-list 103 This builds the DAMON-based LRU-lists sorting subsystem. It tries to
121 protect frequently accessed (hot) pa 104 protect frequently accessed (hot) pages while rarely accessed (cold)
122 pages reclaimed first under memory p 105 pages reclaimed first under memory pressure.
123 106
124 endmenu 107 endmenu
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