5ec4333b19
It's time to remove DAMON debugfs interface, which has deprecated long before in February 2023. Read the cover letter of this patch series for more details. All documents and related tests are also removed. Finally remove the interface. Link: https://lkml.kernel.org/r/20250106191941.107070-9-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Alex Shi <alexs@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Gow <davidgow@google.com> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Rae Moar <rmoar@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Yanteng Si <si.yanteng@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2.8 KiB
SPDX-License-Identifier: GPL-2.0-only
menu "Data Access Monitoring"
config DAMON bool "DAMON: Data Access Monitoring Framework" help This builds a framework that allows kernel subsystems to monitor access frequency of each memory region. The information can be useful for performance-centric DRAM level memory management.
See https://www.kernel.org/doc/html/latest/mm/damon/index.html for
more information.
config DAMON_KUNIT_TEST bool "Test for damon" if !KUNIT_ALL_TESTS depends on DAMON && KUNIT=y default KUNIT_ALL_TESTS help This builds the DAMON Kunit test suite.
For more information on KUnit and unit tests in general, please refer
to the KUnit documentation.
If unsure, say N.
config DAMON_VADDR bool "Data access monitoring operations for virtual address spaces" depends on DAMON && MMU select PAGE_IDLE_FLAG help This builds the default data access monitoring operations for DAMON that work for virtual address spaces.
config DAMON_PADDR bool "Data access monitoring operations for the physical address space" depends on DAMON && MMU select PAGE_IDLE_FLAG help This builds the default data access monitoring operations for DAMON that works for the physical address space.
config DAMON_VADDR_KUNIT_TEST bool "Test for DAMON operations" if !KUNIT_ALL_TESTS depends on DAMON_VADDR && KUNIT=y default KUNIT_ALL_TESTS help This builds the DAMON virtual addresses operations Kunit test suite.
For more information on KUnit and unit tests in general, please refer
to the KUnit documentation.
If unsure, say N.
config DAMON_SYSFS bool "DAMON sysfs interface" depends on DAMON && SYSFS help This builds the sysfs interface for DAMON. The user space can use the interface for arbitrary data access monitoring.
config DAMON_SYSFS_KUNIT_TEST bool "Test for damon sysfs interface" if !KUNIT_ALL_TESTS depends on DAMON_SYSFS && KUNIT=y default KUNIT_ALL_TESTS help This builds the DAMON sysfs interface Kunit test suite.
For more information on KUnit and unit tests in general, please refer
to the KUnit documentation.
If unsure, say N.
config DAMON_RECLAIM bool "Build DAMON-based reclaim (DAMON_RECLAIM)" depends on DAMON_PADDR help This builds the DAMON-based reclamation subsystem. It finds pages that not accessed for a long time (cold) using DAMON and reclaim those.
This is suggested to be used as a proactive and lightweight
reclamation under light memory pressure, while the traditional page
scanning-based reclamation is used for heavy pressure.
config DAMON_LRU_SORT bool "Build DAMON-based LRU-lists sorting (DAMON_LRU_SORT)" depends on DAMON_PADDR help This builds the DAMON-based LRU-lists sorting subsystem. It tries to protect frequently accessed (hot) pages while rarely accessed (cold) pages reclaimed first under memory pressure.
endmenu