| | 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://www.kernel.org/doc/html/latest/mm/damon/index.html for |
| | 13 | more information. |
| | 14 | |
| | 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 | |
| | 27 | config DAMON_VADDR |
| | 28 | bool "Data access monitoring operations for virtual address spaces" |
| | 29 | depends on DAMON && MMU |
| | 30 | select PAGE_IDLE_FLAG |
| | 31 | default DAMON |
| | 32 | help |
| | 33 | This builds the default data access monitoring operations for DAMON |
| | 34 | that work for virtual address spaces. |
| | 35 | |
| | 36 | config DAMON_PADDR |
| | 37 | bool "Data access monitoring operations for the physical address space" |
| | 38 | depends on DAMON && MMU |
| | 39 | select PAGE_IDLE_FLAG |
| | 40 | default DAMON |
| | 41 | help |
| | 42 | This builds the default data access monitoring operations for DAMON |
| | 43 | that works for the physical address space. |
| | 44 | |
| | 45 | config DAMON_VADDR_KUNIT_TEST |
| | 46 | bool "Test for DAMON operations" if !KUNIT_ALL_TESTS |
| | 47 | depends on DAMON_VADDR && KUNIT=y |
| | 48 | default KUNIT_ALL_TESTS |
| | 49 | help |
| | 50 | This builds the DAMON virtual addresses operations Kunit test suite. |
| | 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 | |
| | 57 | config DAMON_SYSFS |
| | 58 | bool "DAMON sysfs interface" |
| | 59 | depends on DAMON && SYSFS |
| | 60 | default DAMON |
| | 61 | help |
| | 62 | This builds the sysfs interface for DAMON. The user space can use |
| | 63 | the interface for arbitrary data access monitoring. |
| | 64 | |
| | 65 | config DAMON_SYSFS_KUNIT_TEST |
| | 66 | bool "Test for damon sysfs interface" if !KUNIT_ALL_TESTS |
| | 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 | |
| | 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 | |
| | 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 | |
| | 97 | endmenu |
projects / linux-block.git / blame_incremental