projects / linux-block.git / blame
| 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 | ||
| 6901cf55 | 12 | See https://www.kernel.org/doc/html/latest/mm/damon/index.html for |
| 2224d848 SP |
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 | |
| 0acfc656 | 31 | default DAMON |
| 3f49584b | 32 | help |
| f7d911c3 | 33 | This builds the default data access monitoring operations for DAMON |
| f24b0626 | 34 | that work for virtual address spaces. |
| 3f49584b | 35 | |
| a28397be | 36 | config DAMON_PADDR |
| f7d911c3 | 37 | bool "Data access monitoring operations for the physical address space" |
| a28397be SP |
38 | depends on DAMON && MMU |
| 39 | select PAGE_IDLE_FLAG | |
| 0acfc656 | 40 | default DAMON |
| a28397be | 41 | help |
| f7d911c3 | 42 | This builds the default data access monitoring operations for DAMON |
| a28397be SP |
43 | that works for the physical address space. |
| 44 | ||
| 17ccae8b | 45 | config DAMON_VADDR_KUNIT_TEST |
| f7d911c3 | 46 | bool "Test for DAMON operations" if !KUNIT_ALL_TESTS |
| 17ccae8b SP |
47 | depends on DAMON_VADDR && KUNIT=y |
| 48 | default KUNIT_ALL_TESTS | |
| 49 | help | |
| f7d911c3 | 50 | This builds the DAMON virtual addresses operations Kunit test suite. |
| 17ccae8b SP |
51 | |
| 52 | For more information on KUnit and unit tests in general, please refer | |
| 53 | to the KUnit documentation. | |
| 54 | ||
| 55 | If unsure, say N. | |
| 56 | ||
| c951cd3b SP |
57 | config DAMON_SYSFS |
| 58 | bool "DAMON sysfs interface" | |
| 59 | depends on DAMON && SYSFS | |
| 0acfc656 | 60 | default DAMON |
| c951cd3b SP |
61 | help |
| 62 | This builds the sysfs interface for DAMON. The user space can use | |
| 63 | the interface for arbitrary data access monitoring. | |
| 64 | ||
| b8ee5575 | 65 | config DAMON_SYSFS_KUNIT_TEST |
| 12d02165 | 66 | bool "Test for damon sysfs interface" if !KUNIT_ALL_TESTS |
| b8ee5575 SP |
67 | depends on DAMON_SYSFS && KUNIT=y |
| 68 | default KUNIT_ALL_TESTS | |
| 69 | help | |
| 70 | This builds the DAMON sysfs interface Kunit test suite. | |
| 71 | ||
| 72 | For more information on KUnit and unit tests in general, please refer | |
| 73 | to the KUnit documentation. | |
| 74 | ||
| 75 | If unsure, say N. | |
| 76 | ||
| 43b0536c SP |
77 | config DAMON_RECLAIM |
| 78 | bool "Build DAMON-based reclaim (DAMON_RECLAIM)" | |
| 79 | depends on DAMON_PADDR | |
| 80 | help | |
| 81 | This builds the DAMON-based reclamation subsystem. It finds pages | |
| 82 | that not accessed for a long time (cold) using DAMON and reclaim | |
| 83 | those. | |
| 84 | ||
| 85 | This is suggested to be used as a proactive and lightweight | |
| 86 | reclamation under light memory pressure, while the traditional page | |
| 87 | scanning-based reclamation is used for heavy pressure. | |
| 88 | ||
| 40e983cc SP |
89 | config DAMON_LRU_SORT |
| 90 | bool "Build DAMON-based LRU-lists sorting (DAMON_LRU_SORT)" | |
| 91 | depends on DAMON_PADDR | |
| 92 | help | |
| 93 | This builds the DAMON-based LRU-lists sorting subsystem. It tries to | |
| 94 | protect frequently accessed (hot) pages while rarely accessed (cold) | |
| 95 | pages reclaimed first under memory pressure. | |
| 96 | ||
| 2224d848 | 97 | endmenu |