| SeongJae Park | 2224d84 | 2021-09-07 19:56:28 -0700 | [diff] [blame] | 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 | |
| SeongJae Park | 17ccae8 | 2021-09-07 19:57:09 -0700 | [diff] [blame] | 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 | |
| SeongJae Park | 3f49584 | 2021-09-07 19:56:44 -0700 | [diff] [blame] | 27 | config DAMON_VADDR |
| 28 | bool "Data access monitoring primitives for virtual address spaces" |
| 29 | depends on DAMON && MMU |
| 30 | select PAGE_IDLE_FLAG |
| 31 | help |
| 32 | This builds the default data access monitoring primitives for DAMON |
| Geert Uytterhoeven | f24b062 | 2021-11-05 13:45:52 -0700 | [diff] [blame] | 33 | that work for virtual address spaces. |
| SeongJae Park | 3f49584 | 2021-09-07 19:56:44 -0700 | [diff] [blame] | 34 | |
| SeongJae Park | a28397b | 2021-11-05 13:46:56 -0700 | [diff] [blame] | 35 | config DAMON_PADDR |
| 36 | bool "Data access monitoring primitives for the physical address space" |
| 37 | depends on DAMON && MMU |
| 38 | select PAGE_IDLE_FLAG |
| 39 | help |
| 40 | This builds the default data access monitoring primitives for DAMON |
| 41 | that works for the physical address space. |
| 42 | |
| SeongJae Park | 17ccae8 | 2021-09-07 19:57:09 -0700 | [diff] [blame] | 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 |
| 47 | help |
| 48 | This builds the DAMON virtual addresses primitives Kunit test suite. |
| 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 | |
| SeongJae Park | 4bc0595 | 2021-09-07 19:56:53 -0700 | [diff] [blame] | 55 | config DAMON_DBGFS |
| 56 | bool "DAMON debugfs interface" |
| SeongJae Park | c026291a | 2021-11-05 13:47:00 -0700 | [diff] [blame] | 57 | depends on DAMON_VADDR && DAMON_PADDR && DEBUG_FS |
| SeongJae Park | 4bc0595 | 2021-09-07 19:56:53 -0700 | [diff] [blame] | 58 | help |
| 59 | This builds the debugfs interface for DAMON. The user space admins |
| 60 | can use the interface for arbitrary data access monitoring. |
| 61 | |
| 62 | If unsure, say N. |
| 63 | |
| SeongJae Park | 17ccae8 | 2021-09-07 19:57:09 -0700 | [diff] [blame] | 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 |
| 68 | help |
| 69 | This builds the DAMON debugfs interface Kunit test suite. |
| 70 | |
| 71 | For more information on KUnit and unit tests in general, please refer |
| 72 | to the KUnit documentation. |
| 73 | |
| 74 | If unsure, say N. |
| 75 | |
| SeongJae Park | 43b0536 | 2021-11-05 13:47:57 -0700 | [diff] [blame] | 76 | config DAMON_RECLAIM |
| 77 | bool "Build DAMON-based reclaim (DAMON_RECLAIM)" |
| 78 | depends on DAMON_PADDR |
| 79 | help |
| 80 | This builds the DAMON-based reclamation subsystem. It finds pages |
| 81 | that not accessed for a long time (cold) using DAMON and reclaim |
| 82 | those. |
| 83 | |
| 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. |
| 87 | |
| SeongJae Park | 2224d84 | 2021-09-07 19:56:28 -0700 | [diff] [blame] | 88 | endmenu |