Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 107 insertions, 0 deletions

diff --git a/mm/damon/Kconfig b/mm/damon/Kconfig
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+# 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 (DEPRECATED!)"
+	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 is deprecated, so users should move to the sysfs interface
+	  (DAMON_SYSFS).  If you depend on this and cannot move, please report
+	  your usecase to damon@lists.linux.dev and linux-mm@kvack.org.
+
+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