Adding upstream version 6.1.76.upstream/6.1.76upstream

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

8 files changed, 451 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm b/Documentation/ABI/testing/sysfs-kernel-mm
new file mode 100644
index 000000000..190d523ac
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm
@@ -0,0 +1,6 @@
+What:		/sys/kernel/mm
+Date:		July 2008
+Contact:	Nishanth Aravamudan <nacc@us.ibm.com>, VM maintainers
+Description:
+		/sys/kernel/mm/ should contain any and all VM
+		related information in /sys/kernel/.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-cma b/Documentation/ABI/testing/sysfs-kernel-mm-cma
new file mode 100644
index 000000000..02b2bb60c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-cma
@@ -0,0 +1,25 @@
+What:		/sys/kernel/mm/cma/
+Date:		Feb 2021
+Contact:	Minchan Kim <minchan@kernel.org>
+Description:
+		/sys/kernel/mm/cma/ contains a subdirectory for each CMA
+		heap name (also sometimes called CMA areas).
+
+		Each CMA heap subdirectory (that is, each
+		/sys/kernel/mm/cma/<cma-heap-name> directory) contains the
+		following items:
+
+			alloc_pages_success
+			alloc_pages_fail
+
+What:		/sys/kernel/mm/cma/<cma-heap-name>/alloc_pages_success
+Date:		Feb 2021
+Contact:	Minchan Kim <minchan@kernel.org>
+Description:
+		the number of pages CMA API succeeded to allocate
+
+What:		/sys/kernel/mm/cma/<cma-heap-name>/alloc_pages_fail
+Date:		Feb 2021
+Contact:	Minchan Kim <minchan@kernel.org>
+Description:
+		the number of pages CMA API failed to allocate
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
new file mode 100644
index 000000000..08b9df323
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -0,0 +1,285 @@
+what:		/sys/kernel/mm/damon/
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Interface for Data Access MONitoring (DAMON).  Contains files
+		for controlling DAMON.  For more details on DAMON itself,
+		please refer to Documentation/admin-guide/mm/damon/index.rst.
+
+What:		/sys/kernel/mm/damon/admin/
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Interface for privileged users of DAMON.  Contains files for
+		controlling DAMON that aimed to be used by privileged users.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/nr_kdamonds
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a number 'N' to this file creates the number of
+		directories for controlling each DAMON worker thread (kdamond)
+		named '0' to 'N-1' under the kdamonds/ directory.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/state
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing 'on' or 'off' to this file makes the kdamond starts or
+		stops, respectively.  Reading the file returns the keywords
+		based on the current status.  Writing 'commit' to this file
+		makes the kdamond reads the user inputs in the sysfs files
+		except 'state' again.  Writing 'update_schemes_stats' to the
+		file updates contents of schemes stats files of the kdamond.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/pid
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Reading this file returns the pid of the kdamond if it is
+		running.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/nr_contexts
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a number 'N' to this file creates the number of
+		directories for controlling each DAMON context named '0' to
+		'N-1' under the contexts/ directory.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/avail_operations
+Date:		Apr 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Reading this file returns the available monitoring operations
+		sets on the currently running kernel.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/operations
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a keyword for a monitoring operations set ('vaddr' for
+		virtual address spaces monitoring, 'fvaddr' for fixed virtual
+		address ranges monitoring, and 'paddr' for the physical address
+		space monitoring) to this file makes the context to use the
+		operations set.  Reading the file returns the keyword for the
+		operations set the context is set to use.
+
+		Note that only the operations sets that listed in
+		'avail_operations' file are valid inputs.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/sample_us
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a value to this file sets the sampling interval of the
+		DAMON context in microseconds as the value.  Reading this file
+		returns the value.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/aggr_us
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a value to this file sets the aggregation interval of
+		the DAMON context in microseconds as the value.  Reading this
+		file returns the value.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/update_us
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a value to this file sets the update interval of the
+		DAMON context in microseconds as the value.  Reading this file
+		returns the value.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/nr_regions/min
+
+WDate:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a value to this file sets the minimum number of
+		monitoring regions of the DAMON context as the value.  Reading
+		this file returns the value.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/nr_regions/max
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a value to this file sets the maximum number of
+		monitoring regions of the DAMON context as the value.  Reading
+		this file returns the value.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/nr_targets
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a number 'N' to this file creates the number of
+		directories for controlling each DAMON target of the context
+		named '0' to 'N-1' under the contexts/ directory.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/pid_target
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the pid of
+		the target process if the context is for virtual address spaces
+		monitoring, respectively.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/nr_regions
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a number 'N' to this file creates the number of
+		directories for setting each DAMON target memory region of the
+		context named '0' to 'N-1' under the regions/ directory.  In
+		case of the virtual address space monitoring, DAMON
+		automatically sets the target memory region based on the target
+		processes' mappings.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/<R>/start
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the start
+		address of the monitoring region.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/targets/<T>/regions/<R>/end
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the end
+		address of the monitoring region.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/nr_schemes
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a number 'N' to this file creates the number of
+		directories for controlling each DAMON-based operation scheme
+		of the context named '0' to 'N-1' under the schemes/ directory.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/action
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the action
+		of the scheme.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/sz/min
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the mimimum
+		size of the scheme's target regions in bytes.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/sz/max
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the maximum
+		size of the scheme's target regions in bytes.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/nr_accesses/min
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the manimum
+		'nr_accesses' of the scheme's target regions.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/nr_accesses/max
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the maximum
+		'nr_accesses' of the scheme's target regions.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/age/min
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the minimum
+		'age' of the scheme's target regions.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/access_pattern/age/max
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the maximum
+		'age' of the scheme's target regions.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/ms
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the time
+		quota of the scheme in milliseconds.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/bytes
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the size
+		quota of the scheme in bytes.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/reset_interval_ms
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the quotas
+		charge reset interval of the scheme in milliseconds.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/sz_permil
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the
+		under-quota limit regions prioritization weight for 'size' in
+		permil.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/nr_accesses_permil
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the
+		under-quota limit regions prioritization weight for
+		'nr_accesses' in permil.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/age_permil
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the
+		under-quota limit regions prioritization weight for 'age' in
+		permil.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/metric
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the metric
+		of the watermarks for the scheme.  The writable/readable
+		keywords for this file are 'none' for disabling the watermarks
+		feature, or 'free_mem_rate' for the system's global free memory
+		rate in permil.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/interval_us
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the metric
+		check interval of the watermarks for the scheme in
+		microseconds.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/high
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the high
+		watermark of the scheme in permil.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/mid
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the mid
+		watermark of the scheme in permil.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/watermarks/low
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing to and reading from this file sets and gets the low
+		watermark of the scheme in permil.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/nr_tried
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Reading this file returns the number of regions that the action
+		of the scheme has tried to be applied.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/sz_tried
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Reading this file returns the total size of regions that the
+		action of the scheme has tried to be applied in bytes.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/nr_applied
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Reading this file returns the number of regions that the action
+		of the scheme has successfully applied.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/sz_applied
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Reading this file returns the total size of regions that the
+		action of the scheme has successfully applied in bytes.
+
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/qt_exceeds
+Date:		Mar 2022
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Reading this file returns the number of the exceed events of
+		the scheme's quotas.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-hugepages b/Documentation/ABI/testing/sysfs-kernel-mm-hugepages
new file mode 100644
index 000000000..294387e2c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-hugepages
@@ -0,0 +1,17 @@
+What:		/sys/kernel/mm/hugepages/
+Date:		June 2008
+Contact:	Nishanth Aravamudan <nacc@us.ibm.com>, hugetlb maintainers
+Description:
+		/sys/kernel/mm/hugepages/ contains a number of subdirectories
+		of the form hugepages-<size>kB, where <size> is the page size
+		of the hugepages supported by the kernel/CPU combination.
+
+		Under these directories are a number of files:
+
+			- nr_hugepages
+			- nr_overcommit_hugepages
+			- free_hugepages
+			- surplus_hugepages
+			- resv_hugepages
+
+		See Documentation/admin-guide/mm/hugetlbpage.rst for details.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-ksm b/Documentation/ABI/testing/sysfs-kernel-mm-ksm
new file mode 100644
index 000000000..d244674a9
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-ksm
@@ -0,0 +1,53 @@
+What:		/sys/kernel/mm/ksm
+Date:		September 2009
+KernelVersion:	2.6.32
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Interface for Kernel Samepage Merging (KSM)
+
+What:		/sys/kernel/mm/ksm/full_scans
+What:		/sys/kernel/mm/ksm/pages_shared
+What:		/sys/kernel/mm/ksm/pages_sharing
+What:		/sys/kernel/mm/ksm/pages_to_scan
+What:		/sys/kernel/mm/ksm/pages_unshared
+What:		/sys/kernel/mm/ksm/pages_volatile
+What:		/sys/kernel/mm/ksm/run
+What:		/sys/kernel/mm/ksm/sleep_millisecs
+Date:		September 2009
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Kernel Samepage Merging daemon sysfs interface
+
+		full_scans: how many times all mergeable areas have been
+		scanned.
+
+		pages_shared: how many shared pages are being used.
+
+		pages_sharing: how many more sites are sharing them i.e. how
+		much saved.
+
+		pages_to_scan: how many present pages to scan before ksmd goes
+		to sleep.
+
+		pages_unshared: how many pages unique but repeatedly checked
+		for merging.
+
+		pages_volatile: how many pages changing too fast to be placed
+		in a tree.
+
+		run: write 0 to disable ksm, read 0 while ksm is disabled.
+
+			- write 1 to run ksm, read 1 while ksm is running.
+			- write 2 to disable ksm and unmerge all its pages.
+
+		sleep_millisecs: how many milliseconds ksm should sleep between
+		scans.
+
+		See Documentation/mm/ksm.rst for more information.
+
+What:		/sys/kernel/mm/ksm/merge_across_nodes
+Date:		January 2013
+KernelVersion:	3.9
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Control merging pages across different NUMA nodes.
+
+		When it is set to 0 only pages from the same node are merged,
+		otherwise pages from all nodes can be merged together (default).
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers b/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers
new file mode 100644
index 000000000..721a05b90
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers
@@ -0,0 +1,25 @@
+What:		/sys/devices/virtual/memory_tiering/
+Date:		August 2022
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	A collection of all the memory tiers allocated.
+
+		Individual memory tier details are contained in subdirectories
+		named by the abstract distance of the memory tier.
+
+		/sys/devices/virtual/memory_tiering/memory_tierN/
+
+
+What:		/sys/devices/virtual/memory_tiering/memory_tierN/
+		/sys/devices/virtual/memory_tiering/memory_tierN/nodelist
+Date:		August 2022
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Directory with details of a specific memory tier
+
+		This is the directory containing information about a particular
+		memory tier, memtierN, where N is derived based on abstract distance.
+
+		A smaller value of N implies a higher (faster) memory tier in the
+		hierarchy.
+
+		nodelist: NUMA nodes that are part of this memory tier.
+
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-numa b/Documentation/ABI/testing/sysfs-kernel-mm-numa
new file mode 100644
index 000000000..77e559d4e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-numa
@@ -0,0 +1,24 @@
+What:		/sys/kernel/mm/numa/
+Date:		June 2021
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Interface for NUMA
+
+What:		/sys/kernel/mm/numa/demotion_enabled
+Date:		June 2021
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Enable/disable demoting pages during reclaim
+
+		Page migration during reclaim is intended for systems
+		with tiered memory configurations.  These systems have
+		multiple types of memory with varied performance
+		characteristics instead of plain NUMA systems where
+		the same kind of memory is found at varied distances.
+		Allowing page migration during reclaim enables these
+		systems to migrate pages from fast tiers to slow tiers
+		when the fast tier is under pressure.  This migration
+		is performed before swap.  It may move data to a NUMA
+		node that does not fall into the cpuset of the
+		allocating process which might be construed to violate
+		the guarantees of cpusets.  This should not be enabled
+		on systems which need strict cpuset location
+		guarantees.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-swap b/Documentation/ABI/testing/sysfs-kernel-mm-swap
new file mode 100644
index 000000000..94672016c
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-swap
@@ -0,0 +1,16 @@
+What:		/sys/kernel/mm/swap/
+Date:		August 2017
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Interface for swapping
+
+What:		/sys/kernel/mm/swap/vma_ra_enabled
+Date:		August 2017
+Contact:	Linux memory management mailing list <linux-mm@kvack.org>
+Description:	Enable/disable VMA based swap readahead.
+
+		If set to true, the VMA based swap readahead algorithm
+		will be used for swappable anonymous pages mapped in a
+		VMA, and the global swap readahead algorithm will be
+		still used for tmpfs etc. other users.  If set to
+		false, the global swap readahead algorithm will be
+		used for all swappable pages.