e8600ce2d2
Commit b18402726b ("Docs/admin-guide/mm/damon/usage: document DAMON
sysfs interface") announced the DAMON debugfs interface deprecation plan,
but it is not so aggressively announced. As the deprecation time is
coming, this commit makes the announce more easy to be found by adding the
note to the config menu of DAMON debugfs interface.
Link: https://lkml.kernel.org/r/20220909202901.57977-6-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Yun Levi <ppbuk5246@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
3.2 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://damonitor.github.io/doc/html/latest-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_DBGFS bool "DAMON debugfs interface" depends on DAMON_VADDR && DAMON_PADDR && DEBUG_FS help This builds the debugfs interface for DAMON. The user space admins can use the interface for arbitrary data access monitoring.
If unsure, say N.
This will be removed after >5.15.y LTS kernel is released, so users
should move to the sysfs interface (DAMON_SYSFS).
config DAMON_DBGFS_KUNIT_TEST bool "Test for damon debugfs interface" if !KUNIT_ALL_TESTS depends on DAMON_DBGFS && KUNIT=y default KUNIT_ALL_TESTS help This builds the DAMON debugfs 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