1 # SPDX-License-Identifier: GPL-2.0-only
3 menu "Data Access Monitoring"
6 bool "DAMON: Data Access Monitoring Framework"
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.
12 See https://damonitor.github.io/doc/html/latest-damon/index.html for
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
20 This builds the DAMON Kunit test suite.
22 For more information on KUnit and unit tests in general, please refer
23 to the KUnit documentation.
28 bool "Data access monitoring primitives for virtual address spaces"
29 depends on DAMON && MMU
32 This builds the default data access monitoring primitives for DAMON
33 that work for virtual address spaces.
36 bool "Data access monitoring primitives for the physical address space"
37 depends on DAMON && MMU
40 This builds the default data access monitoring primitives for DAMON
41 that works for the physical address space.
43 config DAMON_VADDR_KUNIT_TEST
44 bool "Test for DAMON primitives" if !KUNIT_ALL_TESTS
45 depends on DAMON_VADDR && KUNIT=y
46 default KUNIT_ALL_TESTS
48 This builds the DAMON virtual addresses primitives Kunit test suite.
50 For more information on KUnit and unit tests in general, please refer
51 to the KUnit documentation.
56 bool "DAMON debugfs interface"
57 depends on DAMON_VADDR && DAMON_PADDR && DEBUG_FS
59 This builds the debugfs interface for DAMON. The user space admins
60 can use the interface for arbitrary data access monitoring.
64 config DAMON_DBGFS_KUNIT_TEST
65 bool "Test for damon debugfs interface" if !KUNIT_ALL_TESTS
66 depends on DAMON_DBGFS && KUNIT=y
67 default KUNIT_ALL_TESTS
69 This builds the DAMON debugfs interface Kunit test suite.
71 For more information on KUnit and unit tests in general, please refer
72 to the KUnit documentation.
77 bool "Build DAMON-based reclaim (DAMON_RECLAIM)"
78 depends on DAMON_PADDR
80 This builds the DAMON-based reclamation subsystem. It finds pages
81 that not accessed for a long time (cold) using DAMON and reclaim
84 This is suggested to be used as a proactive and lightweight
85 reclamation under light memory pressure, while the traditional page
86 scanning-based reclamation is used for heavy pressure.