From: SeongJae Park
This commit implements the recording feature of DAMON. If this feature
is enabled, DAMON writes the monitored access patterns in its binary
format into a file which specified by the user. This is already able to
be implemented by each user using the callbacks. However
From: SeongJae Park
This commit adds a debugfs interface for DAMON.
DAMON exports four files, ``attrs``, ``pids``, ``record``, and
``monitor_on`` under its debugfs directory, ``/damon/``.
Attributes
--
Users can read and write the ``sampling interval``, ``aggregation
interval
From: SeongJae Park
This commit adds a tracepoint for DAMON. It traces the monitoring
results of each region for each aggregation interval. Using this, DAMON
will be easily integrated with any tracepoints supporting tools such as
perf.
Signed-off-by: SeongJae Park
---
include/trace/events
From: SeongJae Park
This commit adds a shallow wrapper python script, ``/tools/damon/damo``
that provides more convenient interface. Note that it is only aimed to
be used for minimal reference of the DAMON's debugfs interfaces and for
debugging of the DAMON itself.
Signed-off-by: SeongJae Park
From: SeongJae Park
This commit adds a simple document for DAMON under
`Documentation/admin-guide/mm`.
Signed-off-by: SeongJae Park
---
.../admin-guide/mm/data_access_monitor.rst| 428 ++
Documentation/admin-guide/mm/index.rst| 1 +
2 files changed, 429
From: SeongJae Park
This commit adds kunit based unit tests for DAMON.
Signed-off-by: SeongJae Park
Reviewed-by: Brendan Higgins
---
mm/Kconfig | 11 +
mm/damon-test.h | 622
mm/damon.c | 6 +
3 files changed, 639 insertions
From: SeongJae Park
This commit adds a simple user space tests for DAMON. The tests are
using kselftest framework.
Signed-off-by: SeongJae Park
---
tools/testing/selftests/damon/Makefile| 7 +
.../selftests/damon/_chk_dependency.sh| 28
tools/testing/selftests/damon
From: SeongJae Park
This commit updates MAINTAINERS file for DAMON related files.
Signed-off-by: SeongJae Park
---
MAINTAINERS | 12
1 file changed, 12 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 5a5332b3591d..cb4a7fa3cdfe 100644
--- a/MAINTAINERS
+++ b
aster/TEST_DIR/OS_Eval.c#L820
[3]
https://github.com/LinuxPerfStudy/LEBench/blob/master/TEST_DIR/OS_Eval.c#L822
Thanks,
SeongJae Park
On Wed, 6 May 2020 07:41:51 -0700 "Paul E. McKenney" wrote:
> On Wed, May 06, 2020 at 02:59:26PM +0200, SeongJae Park wrote:
> > TL; DR: It was not kernel's fault, but the benchmark program.
> >
> > So, the problem is reproducible using the lebench[1] only. I car
On Tue, 5 May 2020 13:08:05 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> Suppose that there are a very wide and cold region and a hot region, and
> both regions are identified by DAMON. And then, the middle small region
> inside the very wide and cold region beco
From: SeongJae Park
DAMON[1] can be used as a primitive for data access awared memory management
optimizations. That said, users who want such optimizations should run DAMON,
read the monitoring results, analyze it, plan a new memory management scheme,
and apply the new scheme by themselves
From: SeongJae Park
This commit exports 'do_madvise()' to external GPL modules, so that
other modules including DAMON could use the function.
Signed-off-by: SeongJae Park
---
mm/madvise.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/madvise.c b/mm/madvise.c
index 80f8a1839f70
From: SeongJae Park
DAMON can be used as a primitive for data access pattern aware memory
management optimizations. However, users who want such optimizations
should run DAMON, read the monitoring results, analyze it, plan a new
memory management scheme, and apply the new scheme by themselves
From: SeongJae Park
This commit implements a debugfs interface for the data access
monitoring oriented memory management schemes. It is supposed to be
used by administrators and/or privileged user space programs. Users can
read and update the rules using ``/damon/schemes`` file. The
format
From: SeongJae Park
In many cases, users might use DAMON for simple data access aware
memory management optimizations such as applying an operation scheme to
a memory region of a specific size having a specific access frequency
for a specific time. For example, "page out a memory region l
From: SeongJae Park
This commit adds simple selftets for 'schemes' debugfs file of DAMON.
Signed-off-by: SeongJae Park
---
.../testing/selftests/damon/debugfs_attrs.sh | 29 +++
1 file changed, 29 insertions(+)
diff --git a/tools/testing/selftests/damon/debugfs_attrs.sh
b
From: SeongJae Park
After merges of regions, each region should know their last shape in
proper way to measure the changes from the last modification and reset
the age if the changes are significant. This commit adds kunit test
cases checking whether the regions are knowing their last shape
From: SeongJae Park
This commit implements 'schemes' subcommand of the damon userspace tool.
It can be used to describe and apply the data access monitoring-based
operation schemes in more human friendly fashion.
Signed-off-by: SeongJae Park
---
tools/damon/_convert_damos.py | 127
From: SeongJae Park
This commit documents DAMON-based operation schemes in the DAMON
document.
Signed-off-by: SeongJae Park
---
.../admin-guide/mm/data_access_monitor.rst| 100 +-
1 file changed, 98 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/mm
From: SeongJae Park
This commit adds typos found from DAMON patchset.
Signed-off-by: SeongJae Park
---
scripts/spelling.txt | 8
1 file changed, 8 insertions(+)
diff --git a/scripts/spelling.txt b/scripts/spelling.txt
index ffa838f3a2b5..a8214d8e8e4b 100644
--- a/scripts
From: SeongJae Park
Introduction
DAMON is a data access monitoring framework subsystem for the Linux kernel.
The core mechanisms of DAMON called 'region based sampling' and adaptive
regions adjustment' (refer to :doc:`mechanisms` for the detail) make it
accurate, efficient
From: SeongJae Park
This commit exports 'lookup_page_ext()' to GPL modules. This will be
used by DAMON.
Signed-off-by: SeongJae Park
---
mm/page_ext.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/page_ext.c b/mm/page_ext.c
index 4ade843ff588..71169b45bba9 100644
--- a/mm/page_ext.c
From: SeongJae Park
This commit introduces a kernel module named DAMON. Note that this
commit is implementing only the stub for the module load/unload, basic
data structures, and simple manipulation functions of the structures to
keep the size of commit small. The core mechanisms of DAMON
From: SeongJae Park
At the beginning of the monitoring, DAMON constructs the initial regions
by evenly splitting the memory mapped address space of the process into
the user-specified minimal number of regions. In this initial state,
the assumption of the regions (pages in same region have
From: SeongJae Park
This commit implements DAMON's basic access check and region based
sampling mechanisms. This change would seems make no sense, mainly
because it is only a part of the DAMON's logics. Following two commits
will make more sense.
Basic Access Check
--
DAMON
From: SeongJae Park
Suppose that there are a very wide and cold region and a hot region, and
both regions are identified by DAMON. And then, the middle small region
inside the very wide and cold region becomes hot. DAMON will not be
able to identify this new region because the adaptive regions
From: SeongJae Park
Only a number of parts in the virtual address space of the processes is
mapped to physical memory and accessed. Thus, tracking the unmapped
address regions is just wasteful. However, tracking every memory
mapping change might incur an overhead. For the reason, DAMON
From: SeongJae Park
This commit implements callbacks for DAMON. Using this, DAMON users can
install their callbacks for each step of the access monitoring so that
they can do something interesting with the monitored access patterns
online. For example, callbacks can report the monitored
From: SeongJae Park
This commit implements the recording feature of DAMON. If this feature
is enabled, DAMON writes the monitored access patterns in its binary
format into a file which specified by the user. This is already able to
be implemented by each user using the callbacks. However
From: SeongJae Park
This commit adds a debugfs interface for DAMON.
DAMON exports four files, ``attrs``, ``pids``, ``record``, and
``monitor_on`` under its debugfs directory, ``/damon/``.
Attributes
--
Users can read and write the ``sampling interval``, ``aggregation
interval
From: SeongJae Park
This commit adds a tracepoint for DAMON. It traces the monitoring
results of each region for each aggregation interval. Using this, DAMON
will be easily integrated with any tracepoints supporting tools such as
perf.
Signed-off-by: SeongJae Park
---
include/trace/events
From: SeongJae Park
This commit adds a shallow wrapper python script, ``/tools/damon/damo``
that provides more convenient interface. Note that it is only aimed to
be used for minimal reference of the DAMON's debugfs interfaces and for
debugging of the DAMON itself.
Signed-off-by: SeongJae Park
From: SeongJae Park
This commit adds kunit based unit tests for DAMON.
Signed-off-by: SeongJae Park
Reviewed-by: Brendan Higgins
---
mm/Kconfig | 11 +
mm/damon-test.h | 622
mm/damon.c | 6 +
3 files changed, 639 insertions
From: SeongJae Park
This commit adds a simple user space tests for DAMON. The tests are
using kselftest framework.
Signed-off-by: SeongJae Park
---
tools/testing/selftests/damon/Makefile| 7 +
.../selftests/damon/_chk_dependency.sh| 28
tools/testing/selftests/damon
From: SeongJae Park
This commit updates MAINTAINERS file for DAMON related files.
Signed-off-by: SeongJae Park
---
MAINTAINERS | 12
1 file changed, 12 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 5a5332b3591d..586513e92b65 100644
--- a/MAINTAINERS
+++ b
d35d3660e065 ("binder: fix null deref of proc->context")
The script found several more commits but I exclude those here, because those
seems not applicable on 5.4.y or fixing trivial problems only. If I'm not
following a proper process for this kind of reports, please let me know.
Thanks,
SeongJae Park
On Mon, 29 Jun 2020 18:15:42 +0200 Greg KH wrote:
> On Mon, Jun 29, 2020 at 04:28:05PM +0200, SeongJae Park wrote:
> > Hello,
> >
> >
> > With my little script, I found below commits in the mainline tree are more
> > than
> > 1 week old and fixing co
On Tue, 9 Jun 2020 10:47:45 +0200 David Hildenbrand wrote:
> On 09.06.20 08:53, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > In many cases, users might use DAMON for simple data access aware
> > memory management optimizations such as applying an operation sc
From: SeongJae Park
This commit recommends the patches to replace 'blacklist' and
'whitelist' with the 'blocklist' and 'allowlist', because the new
suggestions are incontrovertible, doesn't make people hurt, and more
self-explanatory.
Signed-off-by: SeongJae Park
cr https://code.amazon.com
On Tue, 9 Jun 2020 14:18:43 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> This commit recommends the patches to replace 'blacklist' and
> 'whitelist' with the 'blocklist' and 'allowlist', because the new
> suggestions are incontrovertible, doesn't make people hurt,
From: SeongJae Park
This commit recommends the patches to replace 'blacklist' and
'whitelist' with the 'blocklist' and 'allowlist', because the new
suggestions are incontrovertible, doesn't make people hurt, and more
self-explanatory.
Signed-off-by: SeongJae Park
---
scripts/spelling.txt | 2
On Tue, 9 Jun 2020 14:56:07 +0200 Greg KH wrote:
> On Tue, Jun 09, 2020 at 02:25:49PM +0200, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > This commit recommends the patches to replace 'blacklist' and
> > 'whitelist' with the 'blocklist' and 'allowlist', beca
From: SeongJae Park
DAMON's main idea is not limited to virtual address space. To prepare
for further expansion of the support for other address spaces including
physical memory, this commit modifies one of its core struct, 'struct
damon_region' to use virtual memory independent address space
From: SeongJae Park
Currently, DAMON[1] supports only virtual memory address spaces because it
utilizes PTE Accessed bits as its low-level access check primitive and ``struct
vma`` as a way to address the monitoring target regions. However, the core
idea of DAMON, which makes it able to provide
From: SeongJae Park
This commit allows DAMON users to configure their own monitoring target
regions initializer / updater. Using this, users can confine the
monitoring address spaces as they want. For example, users can track
only stack, heap, shared memory area, or specific file-backed area
From: SeongJae Park
This commit updates the damon user space tool to support the initial
monitoring target regions feature.
Signed-off-by: SeongJae Park
---
tools/damon/_damon.py | 39 +++
tools/damon/record.py | 12 +++-
tools/damon/schemes.py
From: SeongJae Park
Some users would want to monitor only a part of the entire virtual
memory address space. The '->init_target_regions' callback is therefore
provided, but only programming interface can use it.
For the reason, this commit introduces a new debugfs file,
'init_region'. Us
From: SeongJae Park
This commit documents the 'initial_regions' feature.
Signed-off-by: SeongJae Park
---
Documentation/admin-guide/mm/damon/usage.rst | 34
1 file changed, 34 insertions(+)
diff --git a/Documentation/admin-guide/mm/damon/usage.rst
b/Documentation/admin
From: SeongJae Park
DAMON assumes the target region is in virtual address space and
therefore uses PTE Accessed bit checking for access checking. However,
as some CPU provides H/W based memory access check features that usually
more accurate and light-weight than PTE Accessed bit checking, some
From: SeongJae Park
This commit implements the four callbacks (->init_target_regions,
->update_target_regions, ->prepare_access_check, and ->check_accesses)
for the basic access monitoring of the physical memory address space.
By setting the callback pointers to point those, user
From: SeongJae Park
This commit makes the debugfs interface to support the physical memory
monitoring, in addition to the virtual memory monitoring.
Users can do the physical memory monitoring by writing a special
keyword, 'paddr\n' to the 'pids' debugfs file. Then, DAMON will check
From: SeongJae Park
This commit adds description for the physical memory monitoring usage in
the DAMON document.
Signed-off-by: SeongJae Park
---
Documentation/admin-guide/mm/damon/faq.rst| 16 +++--
Documentation/admin-guide/mm/damon/index.rst | 1 -
.../admin-guide/mm/damon
From: SeongJae Park
This commit allows users to record the data accesses on physical memory
address space by passing 'paddr' as target to 'damo-record'. If the
init regions are given, the regions will be monitored. Else, it will
monitor biggest conitguous 'System RAM' region in '/proc/iomem
On Tue, 09 Jun 2020 18:35:46 -0700 Joe Perches wrote:
> On Tue, 2020-06-09 at 14:25 +0200, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > This commit recommends the patches to replace 'blacklist' and
> > 'whitelist' with the 'blocklist' and 'allowlist', beca
From: SeongJae Park
Some terms could be deprecated for various reasons, but it is hard to
update the entire old usages. That said, we could at least encourage
new patches to use the suggested replacements. This commit adds check
of deprecated terms in the 'checkpatch.pl' for that. The script
From: SeongJae Park
This patchset 1) adds support of deprecated terms in the 'checkpatch.pl'
and 2) set the 'blacklist' and 'whitelist' as deprecated with
replacement suggestion of 'blocklist' and 'allowlist', because the
suggestions are incontrovertible, doesn't make people hurt, and more
self
From: SeongJae Park
This commit recommends the patches to replace 'blacklist' and
'whitelist' with the 'blocklist' and 'allowlist', because the new
suggestions are incontrovertible, doesn't make people hurt, and more
self-explanatory.
Signed-off-by: SeongJae Park
---
scripts
On Wed, 10 Jun 2020 00:13:42 -0700 Joe Perches wrote:
> On Wed, 2020-06-10 at 08:52 +0200, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > Some terms could be deprecated for various reasons, but it is hard to
> > update the entire old usages. That said,
On Wed, 10 Jun 2020 01:45:41 -0700 Joe Perches wrote:
> On Wed, 2020-06-10 at 10:01 +0200, SeongJae Park wrote:
> > On Wed, 10 Jun 2020 00:13:42 -0700 Joe Perches wrote:
> []
> > > This is a direct copy of the spelling dictionary
> > > loading code, so may
On Wed, 10 Jun 2020 10:50:24 +0200 Jiri Slaby wrote:
> On 09. 06. 20, 14:25, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > This commit recommends the patches to replace 'blacklist' and
> > 'whitelist' with the 'blocklist' and 'allowlist', beca
On Mon, 8 Jun 2020 13:40:37 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> At the beginning of the monitoring, DAMON constructs the initial regions
> by evenly splitting the memory mapped address space of the process into
> the user-specified minimal number of regions.
/
== >8 =
>From 1376e327de8316ef30c393507b29d70d38bffd05 Mon Sep 17 00:00:00 2001
From: SeongJae Park
Date: Wed, 10 Jun 2020 07:23:33 +0200
Subject: [PATCH v3.1] scripts/deprecated_terms: Recommend denylist/allowlist
i
From: SeongJae Park
Changes from Previous Version
=
- Reorganize the doc and remove png blobs (Mike Rapoport)
- Wordsmith mechnisms doc and commit messages
- tools/wss: Set default working set access frequency threshold
- Avoid race in damon deamon start
From: SeongJae Park
DAMON is a data access monitoring framework subsystem for the Linux
kernel. The core mechanisms of DAMON make it
- accurate (the monitoring output is useful enough for DRAM level
memory management; It might not appropriate for CPU Cache levels,
though),
- light
From: SeongJae Park
Even somehow the initial monitoring target regions are well constructed
to fulfill the assumption (pages in same region have similar access
frequencies), the data access pattern can be dynamically changed. This
will result in low monitoring quality. To keep the assumption
From: SeongJae Park
DAMON separates its monitoring target address space independent high
level logics from the target space dependent low level primitives for
flexible support of various address spaces.
This commit implements DAMON's target address space independent high
level logics for basic
From: SeongJae Park
This commit exports 'lookup_page_ext()' to GPL modules. It will be used
by DAMON in following commit for the implementation of the region based
sampling.
Signed-off-by: SeongJae Park
Reviewed-by: Leonard Foerster
Reviewed-by: Varad Gautam
---
mm/page_ext.c | 1 +
1 file
From: SeongJae Park
This commit implements the recording feature of DAMON. If this feature
is enabled, DAMON writes the monitored access patterns in its binary
format into a file which specified by the user. This is already able to
be implemented by each user using the callbacks. However
From: SeongJae Park
The monitoring target address range can be dynamically changed. For
example, virtual memory could be dynamically mapped and unmapped.
Physical memory could be hot-plugged.
As the changes could be quite frequent in some cases, DAMON checks the
dynamic memory mapping changes
From: SeongJae Park
This commit adds a tracepoint for DAMON. It traces the monitoring
results of each region for each aggregation interval. Using this, DAMON
can easily integrated with tracepoints supporting tools such as perf.
Signed-off-by: SeongJae Park
Reviewed-by: Leonard Foerster
From: SeongJae Park
This commit introduces a reference implementation of the address space
specific low level primitives for the virtual address space, so that
users of DAMON can easily monitor the data accesses on virtual address
spaces of specific processes by simply configuring
From: SeongJae Park
This commit imtroduces a shallow wrapper python script,
``/tools/damon/damo`` that provides more convenient interface. Note
that it is only aimed to be used for minimal reference of the DAMON's
debugfs interfaces and for debugging of the DAMON itself.
Signed-off
From: SeongJae Park
This commit implements a debugfs interface for DAMON. It works for the
virtual address spaces monitoring.
DAMON exports four files, ``attrs``, ``pids``, ``record``, and
``monitor_on`` under its debugfs directory, ``/damon/``.
Attributes
--
Users can read and write
From: SeongJae Park
This commit adds a simple user space tests for DAMON. The tests are
using kselftest framework.
Signed-off-by: SeongJae Park
---
tools/testing/selftests/damon/Makefile| 7 +
.../selftests/damon/_chk_dependency.sh| 28
tools/testing/selftests/damon
From: SeongJae Park
This commit adds kunit based unit tests for DAMON.
Signed-off-by: SeongJae Park
Reviewed-by: Brendan Higgins
---
mm/Kconfig | 11 +
mm/damon-test.h | 661
mm/damon.c | 6 +
3 files changed, 678 insertions
From: SeongJae Park
This commit adds documents for DAMON under
`Documentation/admin-guide/mm/damon/` and `Documentation/vm/damon/`.
Signed-off-by: SeongJae Park
---
Documentation/admin-guide/mm/damon/guide.rst | 157 ++
Documentation/admin-guide/mm/damon/index.rst | 15
From: SeongJae Park
This commit updates MAINTAINERS file for DAMON related files.
Signed-off-by: SeongJae Park
---
MAINTAINERS | 13 +
1 file changed, 13 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 50659d76976b..23348005f5bd 100644
--- a/MAINTAINERS
+++ b
On Mon, 13 Jul 2020 15:08:42 +0300 Mike Rapoport wrote:
> Hi,
>
> On Mon, Jul 13, 2020 at 10:41:31AM +0200, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > This commit exports 'lookup_page_ext()' to GPL modules. It will be used
> > by DAMON in follow
On Mon, 13 Jul 2020 20:19:09 +0300 Mike Rapoport wrote:
> On Mon, Jul 13, 2020 at 02:21:43PM +0200, SeongJae Park wrote:
> > On Mon, 13 Jul 2020 15:08:42 +0300 Mike Rapoport wrote:
> >
> > > Hi,
> > >
> > > On Mon, Jul 13, 2020 at 10:41:31AM +0200, S
On Mon, 6 Jul 2020 13:53:10 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> This commit implements DAMON's target address space independent high
> level logics for basic access check and region based sampling. This
> doesn't work alone, but needs the target address spa
On Tue, 7 Jul 2020 10:49:06 +0300 Mike Rapoport wrote:
> Hello SeongJae,
>
> On Mon, Jul 06, 2020 at 01:53:19PM +0200, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > This commit adds a document for DAMON under
> > `Documentation/admin-guide/mm/damon/`.
From: SeongJae Park
This commit exports 'do_madvise()' to external GPL modules, so that
other modules including DAMON could use the function.
Signed-off-by: SeongJae Park
---
mm/madvise.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/madvise.c b/mm/madvise.c
index 1ad7522567d4
From: SeongJae Park
Changes from Previous Version
=
- Wordsmith the document, comment, commit messages
- Support a scheme of max access count 0
- Use 'unsigned long' for (min|max)_sz_region
Introduction
DAMON[1] can be used as a primitive for data
From: SeongJae Park
This commit implements a debugfs interface for the data access
monitoring oriented memory management schemes. It is supposed to be
used by administrators and/or privileged user space programs. Users can
read and update the rules using ``/damon/schemes`` file. The
format
From: SeongJae Park
In many cases, users might use DAMON for simple data access aware
memory management optimizations such as applying an operation scheme to
a memory region of a specific size having a specific access frequency
for a specific time. For example, "page out a memory region l
From: SeongJae Park
DAMON can be used as a primitive for data access pattern aware memory
management optimizations. However, users who want such optimizations
should run DAMON, read the monitoring results, analyze it, plan a new
memory management scheme, and apply the new scheme by themselves
From: SeongJae Park
This commit adds simple selftets for 'schemes' debugfs file of DAMON.
Signed-off-by: SeongJae Park
---
.../testing/selftests/damon/debugfs_attrs.sh | 29 +++
1 file changed, 29 insertions(+)
diff --git a/tools/testing/selftests/damon/debugfs_attrs.sh
b
From: SeongJae Park
To tune the DAMON-based operation schemes, knowing how many and how
large regions are affected by each of the schemes will be helful. Those
stats could be used for not only the tuning, but also monitoring of the
working set size and the number of regions, if the scheme does
From: SeongJae Park
This commit implements 'schemes' subcommand of the damon userspace tool.
It can be used to describe and apply the data access monitoring-based
operation schemes in more human friendly fashion.
Signed-off-by: SeongJae Park
---
tools/damon/_convert_damos.py | 141
From: SeongJae Park
This commit documents DAMON-based operation schemes in the DAMON
document.
Signed-off-by: SeongJae Park
---
Documentation/admin-guide/mm/damon/guide.rst | 41 +-
Documentation/admin-guide/mm/damon/plans.rst | 24 +---
Documentation/admin-guide/mm/damon/start.rst
From: SeongJae Park
DAMON[1] programming interface users can extend DAMON for any address space by
configuring the address-space specific low level primitives with appropriate
ones including their own implementations. However, because the implementation
for the virtual address space is only
From: SeongJae Park
Some users would want to monitor only a part of the entire virtual
memory address space. The '->init_target_regions' callback is therefore
provided, but only programming interface can use it.
For the reason, this commit introduces a new debugfs file,
'init_region'. Us
From: SeongJae Park
This commit updates the damon user space tool to support the initial
monitoring target regions specification.
Signed-off-by: SeongJae Park
---
tools/damon/_damon.py | 39 +++
tools/damon/record.py | 12 +++-
tools/damon
From: SeongJae Park
This commit adds more test cases for the new feature, 'init_regions'.
Signed-off-by: SeongJae Park
---
mm/damon-test.h | 53 +
1 file changed, 53 insertions(+)
diff --git a/mm/damon-test.h b/mm/damon-test.h
index
From: SeongJae Park
Now the regions can be explicitly set as users want. Therefore checking
the number of gaps doesn't make sense. Remove the condition.
Signed-off-by: SeongJae Park
---
tools/testing/selftests/damon/_chk_record.py | 6 --
1 file changed, 6 deletions(-)
diff --git
From: SeongJae Park
This commit exports the three essential functions for ramp walk,
'page_lock_anon_vma_read()', 'rmap_walk()', and 'page_rmapping()', to
GPL modules. Those will be used by DAMON for the physical memory
address based access monitoring in the following commit.
Signed-off
From: SeongJae Park
This commit implements the four callbacks (->init_target_regions,
->update_target_regions, ->prepare_access_check, and ->check_accesses)
for the basic access monitoring of the physical memory address space.
By setting the callback pointers to point those, user
From: SeongJae Park
This commit documents the 'initial_regions' feature.
Signed-off-by: SeongJae Park
---
Documentation/admin-guide/mm/damon/usage.rst | 35
1 file changed, 35 insertions(+)
diff --git a/Documentation/admin-guide/mm/damon/usage.rst
b/Documentation/admin
From: SeongJae Park
This commit makes the debugfs interface to support the physical memory
monitoring, in addition to the virtual memory monitoring.
Users can do the physical memory monitoring by writing a special
keyword, 'paddr\n' to the 'pids' debugfs file. Then, DAMON will check
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