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 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
DAMON programming interface users are safe from pid recycling problem
since it uses 'struct pid *' as target id. However, debugfs interface
users might still get the problem since they should describe the target
ids with pid numbers.
This commit makes the debugfs interface
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 implements a debugfs interface for DAMON. It works for the
virtual address spaces monitoring.
DAMON exports four files, ``attrs``, ``target_ids``, ``record``, and
``monitor_on`` under its debugfs directory, ``/damon/``.
Attributes
--
Users can read
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
PG_idle and PG_young allows the two PTE Accessed bit users,
IDLE_PAGE_TRACKING and the reclaim logic concurrently work while don't
interfere each other. That is, when they need to clear the Accessed
bit, they set PG_young and PG_idle to represent the previous state
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
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
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 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
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
Changes from Previous Version
=
- Place 'CREATE_TRACE_POINTS' after '#include' statements (Steven Rostedt)
- Support large record file (Alkaid)
- Place 'put_pid()' of virtual monitoring targets in 'cleanup' callback
- Avoid conflict between
On Tue, 4 Aug 2020 11:14:03 +0200 SeongJae Park wrote:
> 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.
&
On Tue, 4 Aug 2020 11:14:10 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> This commit implements a debugfs interface for DAMON. It works for the
> virtual address spaces monitoring.
[...]
> +
> +#define targetid_is_pid(ctx) \
> + (ctx->target_valid ==
On Wed, 5 Aug 2020 08:59:41 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> Changes from Previous Version
> =
>
> - paddr: Support nested iomem sections (Du Fan)
> - Rebase on v5.8
>
> Introduction
>
>
> DAMO
From: SeongJae Park
This commit updates the DAMON documents for the physical memory
monitoring support.
Signed-off-by: SeongJae Park
---
Documentation/admin-guide/mm/damon/usage.rst | 42
Documentation/vm/damon/design.rst| 29 +-
Documentation/vm
From: SeongJae Park
This commit updates the DAMON user space tool (damo-record) for NUMA
specific physical memory monitoring. With this change, users can
monitor accesses to physical memory of specific NUMA node.
Signed-off-by: SeongJae Park
---
tools/damon/_paddr_layout.py | 147
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
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
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 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
This commit adds description of the 'init_regions' feature in the DAMON
usage document.
Signed-off-by: SeongJae Park
---
Documentation/admin-guide/mm/damon/usage.rst | 41 +++-
1 file changed, 39 insertions(+), 2 deletions(-)
diff --git a/Documentation
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
Changes from Previous Version
=
- paddr: Support nested iomem sections (Du Fan)
- Rebase on v5.8
Introduction
DAMON[1] programming interface users can extend DAMON for any address space by
configuring the address-space specific low
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
On Tue, 4 Aug 2020 18:01:47 -0400 Steven Rostedt wrote:
> On Tue, 4 Aug 2020 11:14:09 +0200
> SeongJae Park wrote:
>
> > From: SeongJae Park
> >
> > This commit adds a tracepoint for DAMON. It traces the monitoring
> > results of each region for each aggrega
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 add description of DAMON-based operation schemes in the
DAMON documents.
Signed-off-by: SeongJae Park
---
Documentation/admin-guide/mm/damon/guide.rst | 41 ++-
Documentation/admin-guide/mm/damon/start.rst | 11 ++
Documentation/admin-guide/mm/damon
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
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
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 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
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
Changes from Previous Version
=
- Drop loadable module support
- Use dedicated valid action checker function
- Rebase on v5.8 plus v19 DAMON
Introduction
DAMON[1] can be used as a primitive for data access awared memory management
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 | 13 +
1 file changed, 13 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 4e2698cc7e23..3d6050d693e3 100644
--- a/MAINTAINERS
+++ b
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 adds kunit based unit tests for DAMON.
Signed-off-by: SeongJae Park
Reviewed-by: Brendan Higgins
---
mm/Kconfig | 11 +
mm/damon-test.h | 671
mm/damon.c | 6 +
3 files changed, 688 insertions
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``, ``target_ids``, ``record``, and
``monitor_on`` under its debugfs directory, ``/damon/``.
Attributes
--
Users can read
From: SeongJae Park
DAMON programming interface users are safe from pid recycling problem
since it uses 'struct pid *' as target id. However, debugfs interface
users might still get the problem since they should describe the target
ids with pid numbers.
This commit makes the debugfs interface
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 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
PG_idle and PG_young allows the two PTE Accessed bit users,
IDLE_PAGE_TRACKING and the reclaim logic concurrently work while don't
interfere each other. That is, when they need to clear the Accessed
bit, they set PG_young and PG_idle to represent the previous state
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
Changes from Previous Version
=
- Drop loadable module support (Mike Rapoport)
- Select PAGE_EXTENSION if !64BIT for 'set_page_young()'
- Take care of the MMU notification subscribers (Shakeel Butt)
- Substitute 'struct damon_task' with 'struct
On Wed, 29 Jul 2020 08:31:29 -0700 Shakeel Butt wrote:
> On Sat, Jul 18, 2020 at 6:31 AM SeongJae Park wrote:
> >
> > On Fri, 17 Jul 2020 19:47:50 -0700 Shakeel Butt wrote:
> >
> > > On Mon, Jul 13, 2020 at 1:43 AM SeongJae Park wrote:
>
On Tue, 28 Jul 2020 10:42:11 -0700 Shakeel Butt wrote:
> On Mon, Jul 27, 2020 at 2:03 AM SeongJae Park wrote:
> >
> > On Mon, 27 Jul 2020 00:34:54 -0700 Greg Thelen wrote:
> >
> > > SeongJae Park wrote:
> > >
> > > > From: SeongJae Park
On Mon, 27 Jul 2020 13:49:00 -0700 Joe Perches wrote:
> On Mon, 2020-07-27 at 13:44 -0700, Andrew Morton wrote:
> > On Mon, 27 Jul 2020 08:54:41 +0200 SeongJae Park wrote:
> >
> > > > > > Unfortunately, the inexperienced _do_ in fact run
> > > > >
On Mon, 27 Jul 2020 00:34:54 -0700 Greg Thelen wrote:
> SeongJae Park wrote:
>
> > From: SeongJae Park
> >
> > This commit introduces a reference implementation of the address space
> > specific low level primitives for the virtual address space, so that
> &g
On Mon, 27 Jul 2020 00:19:00 -0700 Greg Thelen wrote:
> SeongJae Park wrote:
>
> > From: SeongJae Park
> >
> > This commit adds documents for DAMON under
> > `Documentation/admin-guide/mm/damon/` and `Documentation/vm/damon/`.
> >
> > Signed-off-by:
On Sun, 26 Jul 2020 22:33:28 +0200 "Michał Mirosław"
wrote:
> On Sun, Jul 26, 2020 at 08:07:48PM +0200, SeongJae Park wrote:
> > On Sun, 26 Jul 2020 09:42:06 -0700 Joe Perches wrote:
> >
> > > On Sun, 2020-07-26 at 17:36 +0200, SeongJae Park wrote:
> >
On Sun, 26 Jul 2020 09:42:06 -0700 Joe Perches wrote:
> On Sun, 2020-07-26 at 17:36 +0200, SeongJae Park wrote:
> > On Sun, 26 Jul 2020 07:50:54 -0700 Joe Perches wrote:
> []
> > > I do not want to encourage relatively inexperienced people
> > > to run check
On Sun, 26 Jul 2020 07:50:54 -0700 Joe Perches wrote:
> On Sun, 2020-07-26 at 09:45 +0200, SeongJae Park wrote:
> > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> []
> > @@ -721,6 +721,7 @@ sub read_word_corrections {
> > my %deprecated_terms_fix;
&g
On Sun, 26 Jul 2020 00:29:05 -0700 Joe Perches wrote:
> On Sun, 2020-07-26 at 09:18 +0200, SeongJae Park wrote:
> > On Sat, 25 Jul 2020 21:27:07 -0700 Joe Perches wrote:
> >
> > > On Sun, 2020-07-26 at 01:35 +0200, SeongJae Park wrote:
> > > > On Sat, 25
On Sat, 25 Jul 2020 21:27:07 -0700 Joe Perches wrote:
> On Sun, 2020-07-26 at 01:35 +0200, SeongJae Park wrote:
> > On Sat, 25 Jul 2020 10:29:23 -0700 Joe Perches wrote:
> >
> > > On Sat, 2020-07-25 at 15:02 +0200, Michał Mirosław wrote:
> > > > Hello,
&g
e message to
> show only suggestions not from a specification.
Agreed for this case. However, excluding existing file check doesn't fully
avoid this problem. Also, more terms having different deprecation rules might
be added in future. How about allowing file check but
On Mon, 13 Jul 2020 10:41:39 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> This commit implements a debugfs interface for DAMON. It works for the
> virtual address spaces monitoring.
>
[...]
> +/*
> + * Converts a string into an array of unsigned long integer
On Mon, 20 Jul 2020 14:15:43 +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 Fri, 17 Jul 2020 19:47:50 -0700 Shakeel Butt wrote:
> On Mon, Jul 13, 2020 at 1:43 AM SeongJae Park wrote:
> >
> > From: SeongJae Park
> >
> > DAMON is a data access monitoring framework subsystem for the Linux
> > kernel. The core mechanisms of
On Fri, 17 Jul 2020 19:23:28 -0700 Shakeel Butt wrote:
> On Fri, Jul 17, 2020 at 9:24 AM SeongJae Park wrote:
> >
> > On Fri, 17 Jul 2020 08:17:09 -0700 Shakeel Butt wrote:
> >
> > > On Thu, Jul 16, 2020 at 11:54 PM SeongJae Park wrote:
> > > >
On Fri, 17 Jul 2020 08:17:09 -0700 Shakeel Butt wrote:
> On Thu, Jul 16, 2020 at 11:54 PM SeongJae Park wrote:
> >
> > On Thu, 16 Jul 2020 17:46:54 -0700 Shakeel Butt wrote:
> >
> > > On Mon, Jul 13, 2020 at 1:44 AM SeongJae Park wrote:
>
On Mon, 13 Jul 2020 19:38:05 +0200 SeongJae Park wrote:
> 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:
> > >
> >
On Thu, 16 Jul 2020 17:46:54 -0700 Shakeel Butt wrote:
> On Mon, Jul 13, 2020 at 1:44 AM SeongJae Park wrote:
> >
> > From: SeongJae Park
> >
> > This commit introduces a reference implementation of the address space
> > specific low level primitives
On 2020-07-15T18:29:51-07:00 Randy Dunlap wrote:
> From: Randy Dunlap
>
> Drop the doubled words "used" and "by".
>
> Drop the repeated acronym "TLB" and make several other fixes around it.
> (capital letters, spellos)
>
> Signed-off-b
On 2020-07-15T18:30:31-07:00 Randy Dunlap wrote:
> From: Randy Dunlap
>
> Drop doubled words "to" and "that".
>
> Signed-off-by: Randy Dunlap
Reviewed-by: SeongJae Park
Thanks,
SeongJae Park
> Cc: Ingo Molnar
> Cc: Peter Zijlstra
>
On 2020-07-15T18:29:43-07:00 Randy Dunlap wrote:
> From: Randy Dunlap
>
> Drop the doubled words "to" and "the".
>
> Signed-off-by: Randy Dunlap
> Cc: Andrew Morton
> Cc: linux...@kvack.org
Reviewed-by: SeongJae Park
Thanks,
SeongJae Park
>
rm.
>
> Signed-off-by: Kieran Bingham
Reviewed-by: SeongJae Park
Thanks,
SeongJae Park
>
> ---
> v2:
> - Use both singular and plural form.
> ---
> scripts/spelling.txt | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/scripts/spelling
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, 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
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
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 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 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 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 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
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 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
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
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 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
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
# NOTE: this patch is based on next/master, as this is a followup of
# commit 0d8b43e5876a ("scripts/deprecated_terms: recommend
# denylist/allowlist instead of blacklist/whitelist"), which merged in
# next tree only.
Commit a5f526ecb075 ("CodingStyle: Inclus
On Wed, 8 Jul 2020 00:12:03 -0700 Dan Williams wrote:
> On Mon, Jul 6, 2020 at 11:56 PM SeongJae Park wrote:
> >
> > Hello,
> >
> > On Sat, 04 Jul 2020 13:02:51 -0700 Dan Williams
> > wrote:
> >
> > > Recent events have prompted a Linux position
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| 7 ++-
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
From: SeongJae Park
This commit updates the DAMON user space tool (damo-record) for NUMA
specific physical memory monitoring. With this change, users can
monitor accesses to physical memory of specific NUMA node.
Signed-off-by: SeongJae Park
---
tools/damon/_paddr_layout.py | 158
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 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 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 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
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