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
On Mon, 18 May 2020 12:00:12 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> This commit adds a debugfs interface for DAMON.
[...]
> diff --git a/mm/damon.c b/mm/damon.c
> index ddd78843f79a..f31310536c79 100644
> --- a/mm/damon.c
> +++ b/mm/damon.c
> @@ -10,6 +1
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
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 | 622
mm/damon.c | 6 +
3 files changed, 639 insertions
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 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 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 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 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
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
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
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
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 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
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
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 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
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 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
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 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
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 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[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 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
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 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 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 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 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
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
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
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
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
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
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
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
Introduction
Memory management decisions can be improved if finer data access information is
available. However, because such finer information usually comes with higher
overhead, most systems including Linux forgives the potential benefit and rely
on only
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
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
aster/TEST_DIR/OS_Eval.c#L820
[3]
https://github.com/LinuxPerfStudy/LEBench/blob/master/TEST_DIR/OS_Eval.c#L822
Thanks,
SeongJae Park
nitude and scope you must do an
> allmodconfig build.
Definitely my fault. I will fix this in next spin.
Thanks,
SeongJae Park
>
> Thank you.
On Tue, 5 May 2020 11:27:20 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 07:49:43PM +0200, SeongJae Park wrote:
> > On Tue, 5 May 2020 10:23:58 -0700 "Paul E. McKenney"
> > wrote:
> >
> > > On Tue, Ma
On Tue, 5 May 2020 11:17:07 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 07:56:05PM +0200, SeongJae Park wrote:
> > On Tue, 5 May 2020 10:30:36 -0700 "Paul E. McKenney"
> > wrote:
> >
> > > On Tue, May 05, 2020 at 07:05:53PM +020
On Tue, 5 May 2020 10:28:50 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 09:37:42AM -0700, Eric Dumazet wrote:
> >
> >
> > On 5/5/20 9:31 AM, Eric Dumazet wrote:
> > >
> > >
> > > On 5/5/20 9:25 AM, Eric Dumazet wrote:
&
On Tue, 5 May 2020 10:30:36 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 07:05:53PM +0200, SeongJae Park wrote:
> > On Tue, 5 May 2020 09:37:42 -0700 Eric Dumazet
> > wrote:
> >
> > >
> > >
> > > On 5/5/20 9:31 AM, Eric
On Tue, 5 May 2020 10:23:58 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 09:25:06AM -0700, Eric Dumazet wrote:
> >
> >
> > On 5/5/20 9:13 AM, SeongJae Park wrote:
> > > On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet
> > > wr
On Tue, 5 May 2020 09:37:42 -0700 Eric Dumazet wrote:
>
>
> On 5/5/20 9:31 AM, Eric Dumazet wrote:
> >
> >
> > On 5/5/20 9:25 AM, Eric Dumazet wrote:
> >>
> >>
> >> On 5/5/20 9:13 AM, SeongJae Park wrote:
> >>> On Tue, 5 May 2
On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet wrote:
> On Tue, May 5, 2020 at 8:47 AM SeongJae Park wrote:
> >
> > On Tue, 5 May 2020 08:20:50 -0700 Eric Dumazet
> > wrote:
> >
> > >
> > >
> > > On 5/5/20 8:07 AM, SeongJae Park wrote:
On Tue, 5 May 2020 08:20:50 -0700 Eric Dumazet wrote:
>
>
> On 5/5/20 8:07 AM, SeongJae Park wrote:
> > On Tue, 5 May 2020 07:53:39 -0700 Eric Dumazet wrote:
> >
>
> >> Why do we have 10,000,000 objects around ? Could this be because of
> >>
On Tue, 5 May 2020 07:53:39 -0700 Eric Dumazet wrote:
> On Tue, May 5, 2020 at 4:54 AM SeongJae Park wrote:
> >
> > CC-ing sta...@vger.kernel.org and adding some more explanations.
> >
> > On Tue, 5 May 2020 10:10:33 +0200 SeongJae Park wrote:
&g
On Tue, 5 May 2020 13:44:42 +0100 Al Viro wrote:
> CAUTION: This email originated from outside of the organization. Do not cli=
> ck links or open attachments unless you can confirm the sender and know the=
> content is safe.
>
>
>
> On Tue, May 05, 2020 at 09:28:39AM
CC-ing sta...@vger.kernel.org and adding some more explanations.
On Tue, 5 May 2020 10:10:33 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
> deallocation of 'socket_alloc' to be done
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
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 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 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 | 622
mm/damon.c | 6 +
3 files changed, 639 insertions
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 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 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
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 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
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
Introduction
Memory management decisions can be improved if finer data access information is
available. However, because such finer information usually comes with higher
overhead, most systems including Linux forgives the potential benefit and rely
on only
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 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
This reverts commit 6d7855c54e1e269275d7c504f8f62a0b7a5b3f18.
The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
deallocation of 'socket_alloc' to be done asynchronously using RCU, as
same to 'sock.wq'.
The change made 'socket_alloc' liv
From: SeongJae Park
This reverts commit 333f7909a8573145811c4ab7d8c9092301707721.
The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
deallocation of 'socket_alloc' to be done asynchronously using RCU, as
same to 'sock.wq'. And the following commit 333f7909a857
From: SeongJae Park
The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
deallocation of 'socket_alloc' to be done asynchronously using RCU, as
same to 'sock.wq'. And the following commit 333f7909a857 ("coallocate
socket_sq with socket itself") made
On Tue, 5 May 2020 09:45:35 +0200 Greg KH wrote:
> On Tue, May 05, 2020 at 09:28:41AM +0200, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > This reverts commit 6d7855c54e1e269275d7c504f8f62a0b7a5b3f18.
> >
> > The commit 6d7855c54e1e ("s
On Tue, 5 May 2020 09:45:11 +0200 Greg KH wrote:
> On Tue, May 05, 2020 at 09:28:40AM +0200, SeongJae Park wrote:
> > From: SeongJae Park
> >
> > This reverts commit 333f7909a8573145811c4ab7d8c9092301707721.
> >
> > The commit 6d7855c54e1e ("s
From: SeongJae Park
This reverts commit 6d7855c54e1e269275d7c504f8f62a0b7a5b3f18.
The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
deallocation of 'socket_alloc' to be done asynchronously using RCU, as
same to 'sock.wq'.
The change made 'socket_alloc' liv
From: SeongJae Park
The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
deallocation of 'socket_alloc' to be done asynchronously using RCU, as
same to 'sock.wq'. And the following commit 333f7909a857 ("coallocate
socket_sq with socket itself") made
From: SeongJae Park
This reverts commit 333f7909a8573145811c4ab7d8c9092301707721.
The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
deallocation of 'socket_alloc' to be done asynchronously using RCU, as
same to 'sock.wq'. And the following commit 333f7909a857
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 | 126
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
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
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[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
On Wed, 29 Apr 2020 10:18:06 +0100 Jonathan Cameron
wrote:
> On Wed, 29 Apr 2020 09:49:54 +0200
> SeongJae Park wrote:
>
> > On Tue, 28 Apr 2020 17:17:13 +0100 Jonathan Cameron
> > wrote:
> >
> > > On Tue, 28 Apr 2020 15:23:42 +0200
> > > Seon
On Tue, 28 Apr 2020 17:17:13 +0100 Jonathan Cameron
wrote:
> On Tue, 28 Apr 2020 15:23:42 +0200
> SeongJae Park wrote:
>
> > On Tue, 28 Apr 2020 13:27:04 +0100 Jonathan Cameron
> > wrote:
> >
> > > On Mon, 27 Apr 2020 14:04:27 +0200
> > >
On Tue, 28 Apr 2020 13:27:04 +0100 Jonathan Cameron
wrote:
> On Mon, 27 Apr 2020 14:04:27 +0200
> SeongJae Park wrote:
>
> > From: SeongJae Park
> >
> > Introduction
> >
> >
> > Memory management decisions can be improved if finer
the example.
Signed-off-by: SeongJae Park
---
Documentation/dev-tools/kunit/start.rst | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/dev-tools/kunit/start.rst
b/Documentation/dev-tools/kunit/start.rst
index 6dc229e..aeeddfa 100644
--- a/Documentation/dev-tools/kunit
On Sat, Sep 7, 2019 at 4:33 AM shuah wrote:
>
> On 9/6/19 7:16 PM, Brendan Higgins wrote:
> > On Fri, Sep 6, 2019 at 9:12 AM SeongJae Park wrote:
> >>
> >> Running kunit with '--build_dir' option gives following error message:
> >>
> >> ```
>
otFoundError'.
This commit fixes the problem by properly passing the '--build_dir'
option value to the 'run_kernel()'.
Signed-off-by: SeongJae Park
---
tools/testing/kunit/kunit.py | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/testing/kunit/kunit.py b/tools/tes
On Fri, Sep 6, 2019 at 5:51 PM shuah wrote:
>
> On 9/6/19 6:05 AM, SeongJae Park wrote:
> > kunit fails to run with '--build_dir' option because the option is not
> > properly sent to kernel running procedure. This commit fixes the
> > problem.
>
> Can you
kunit fails to run with '--build_dir' option because the option is not
properly sent to kernel running procedure. This commit fixes the
problem.
Signed-off-by: SeongJae Park
---
tools/testing/kunit/kunit.py | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/testing
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