linux.git/tools/testing/selftests/damon, branch v6.12 Linux kernel source tree selftests/damon: add execute permissions to test scripts 2024-09-04T04:15:57+00:00 SeongJae Park sj@kernel.org 2024-08-27T03:03:30+00:00 8c211412c5dffd090eaea5ee033cd729f8e5f873 Some test scripts are missing executable permissions. It causes warnings that make the test output unnecessarily verbose. Add executable permissions. Link: https://lkml.kernel.org/r/20240827030336.7930-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Gow <davidgow@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Some test scripts are missing executable permissions.  It causes warnings
that make the test output unnecessarily verbose.  Add executable
permissions.

Link: https://lkml.kernel.org/r/20240827030336.7930-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: David Gow <davidgow@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/damon: cleanup __pycache__/ with 'make clean' 2024-09-04T04:15:56+00:00 SeongJae Park sj@kernel.org 2024-08-27T03:03:29+00:00 582c04b07fa91665b4f38682c290fb9f0b085c7e Python-based tests creates __pycache__/ directory. Remove it with 'make clean' by defining it as EXTRA_CLEAN. Link: https://lkml.kernel.org/r/20240827030336.7930-3-sj@kernel.org Fixes: b5906f5f7359 ("selftests/damon: add a test for update_schemes_tried_regions sysfs command") Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Gow <davidgow@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Python-based tests creates __pycache__/ directory.  Remove it with 'make
clean' by defining it as EXTRA_CLEAN.

Link: https://lkml.kernel.org/r/20240827030336.7930-3-sj@kernel.org
Fixes: b5906f5f7359 ("selftests/damon: add a test for update_schemes_tried_regions sysfs command")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: David Gow <davidgow@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/damon: add access_memory_even to .gitignore 2024-09-04T04:15:56+00:00 SeongJae Park sj@kernel.org 2024-08-27T03:03:28+00:00 9cb75552f421c5e9667bc19fb430063cb023c219 Patch series "misc fixups for DAMON {self,kunit} tests". This patchset is for minor fixups of DAMON selftests and kunit tests. First three patches make DAMON selftests more cleanly maintained (patches 1 and 2) without unnecessary warnings (patch 3). Following six patches remove unnecessary test case (patch 4), handle configs combinations that can make tests fail (patches 5-7), reorganize the test files following the new guideline (patch 8), and add reference kunitconfig for DAMON kunit tests (patch 9). This patch (of 9): DAMON selftests build access_memory_even, but its not on the .gitignore list. Add it to make 'git status' output cleaner. Link: https://lkml.kernel.org/r/20240827030336.7930-1-sj@kernel.org Link: https://lkml.kernel.org/r/20240827030336.7930-2-sj@kernel.org Fixes: c94df805c774 ("selftests/damon: implement a program for even-numbered memory regions access") Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Gow <davidgow@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Patch series "misc fixups for DAMON {self,kunit} tests".

This patchset is for minor fixups of DAMON selftests and kunit tests. 
First three patches make DAMON selftests more cleanly maintained (patches
1 and 2) without unnecessary warnings (patch 3).  Following six patches
remove unnecessary test case (patch 4), handle configs combinations that
can make tests fail (patches 5-7), reorganize the test files following the
new guideline (patch 8), and add reference kunitconfig for DAMON kunit
tests (patch 9).


This patch (of 9):

DAMON selftests build access_memory_even, but its not on the .gitignore
list.  Add it to make 'git status' output cleaner.

Link: https://lkml.kernel.org/r/20240827030336.7930-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20240827030336.7930-2-sj@kernel.org
Fixes: c94df805c774 ("selftests/damon: implement a program for even-numbered memory regions access")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: David Gow <davidgow@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/damon/damon_nr_regions: test online-tuned max_nr_regions 2024-07-04T02:30:29+00:00 SeongJae Park sj@kernel.org 2024-06-25T18:05:38+00:00 8bf890c8161215bd1fbd1a6d9b61acbb8eac165b User could update max_nr_regions parameter while DAMON is running to a value that smaller than the current number of regions that DAMON is seeing. Such update could be done for reducing the monitoring overhead. In the case, DAMON should merge regions aggressively more than normal situation to ensure the new limit is successfully applied. Implement a kselftest to ensure that. Link: https://lkml.kernel.org/r/20240625180538.73134-9-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
User could update max_nr_regions parameter while DAMON is running to a
value that smaller than the current number of regions that DAMON is
seeing.  Such update could be done for reducing the monitoring overhead. 
In the case, DAMON should merge regions aggressively more than normal
situation to ensure the new limit is successfully applied.  Implement a
kselftest to ensure that.

Link: https://lkml.kernel.org/r/20240625180538.73134-9-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
_damon_sysfs: implement commit() for online parameters update 2024-07-04T02:30:29+00:00 SeongJae Park sj@kernel.org 2024-06-25T18:05:37+00:00 5ac9adecf0cf07b99d4eeda24a89d27447acd860 Users can update DAMON parameters while it is running, using 'commit' DAMON sysfs interface command. For testing the feature in future tests, implement a function for doing that on the test-purpose DAMON sysfs interface wrapper Python module. Link: https://lkml.kernel.org/r/20240625180538.73134-8-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Users can update DAMON parameters while it is running, using 'commit'
DAMON sysfs interface command.  For testing the feature in future tests,
implement a function for doing that on the test-purpose DAMON sysfs
interface wrapper Python module.

Link: https://lkml.kernel.org/r/20240625180538.73134-8-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/damon: implement test for min/max_nr_regions 2024-07-04T02:30:29+00:00 SeongJae Park sj@kernel.org 2024-06-25T18:05:36+00:00 781497347d1bcb8c95fca8356575cfd42fff1354 Implement a kselftest for DAMON's {min,max}_nr_regions' parameters. The test ensures both the minimum and the maximum number of regions limit is respected even if the workload's real number of regions is less than the minimum or larger than the maximum limits. Link: https://lkml.kernel.org/r/20240625180538.73134-7-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Implement a kselftest for DAMON's {min,max}_nr_regions' parameters.  The
test ensures both the minimum and the maximum number of regions limit is
respected even if the workload's real number of regions is less than the
minimum or larger than the maximum limits.

Link: https://lkml.kernel.org/r/20240625180538.73134-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/damon/_damon_sysfs: implement kdamonds stop function 2024-07-04T02:30:28+00:00 SeongJae Park sj@kernel.org 2024-06-25T18:05:35+00:00 f60636047a6cc2a3076cb202b462cff4347c07d6 Implement DAMON stop function on the test-purpose DAMON sysfs interface wrapper Python module, _damon_sysfs.py. This feature will be used by future DAMON tests that need to start/stop DAMON multiple times. Link: https://lkml.kernel.org/r/20240625180538.73134-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Implement DAMON stop function on the test-purpose DAMON sysfs interface
wrapper Python module, _damon_sysfs.py.  This feature will be used by
future DAMON tests that need to start/stop DAMON multiple times.

Link: https://lkml.kernel.org/r/20240625180538.73134-6-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/damon: implement DAMOS tried regions test 2024-07-04T02:30:28+00:00 SeongJae Park sj@kernel.org 2024-06-25T18:05:34+00:00 c9a3003a358df357b1eba44b05a5bb164621d5f5 Implement a test for DAMOS tried regions command of DAMON sysfs interface. It ensures the expected number of monitoring regions are created using an artificial memory access pattern generator program. Link: https://lkml.kernel.org/r/20240625180538.73134-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Implement a test for DAMOS tried regions command of DAMON sysfs interface.
It ensures the expected number of monitoring regions are created using an
artificial memory access pattern generator program.

Link: https://lkml.kernel.org/r/20240625180538.73134-5-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/damon: implement a program for even-numbered memory regions access 2024-07-04T02:30:28+00:00 SeongJae Park sj@kernel.org 2024-06-25T18:05:33+00:00 c94df805c774ff87022396bb8120d5872cd7e5ed To test schemes_tried_regions feature, we need to have a program having specific number of regions that having different access pattern. Existing artificial access pattern generator, 'access_memory', cannot be used for the purpose, since it accesses only one region at a given time. Extending it could be an option, but since the purpose and the implementation are pretty simple, implementing another one from the scratch is better. Implement such another artificial memory access program that allocates user-defined number/size regions and accesses even-numbered regions. Link: https://lkml.kernel.org/r/20240625180538.73134-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
To test schemes_tried_regions feature, we need to have a program having
specific number of regions that having different access pattern.  Existing
artificial access pattern generator, 'access_memory', cannot be used for
the purpose, since it accesses only one region at a given time.  Extending
it could be an option, but since the purpose and the implementation are
pretty simple, implementing another one from the scratch is better.

Implement such another artificial memory access program that allocates
user-defined number/size regions and accesses even-numbered regions.

Link: https://lkml.kernel.org/r/20240625180538.73134-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/damon/_damon_sysfs: support schemes_update_tried_regions 2024-07-04T02:30:28+00:00 SeongJae Park sj@kernel.org 2024-06-25T18:05:32+00:00 209e6313fb17dbc66cec7230902ba4427717e6ee Implement schemes_update_tried_regions DAMON sysfs command on _damon_sysfs.py, to use on implementations of future tests for the feature. Link: https://lkml.kernel.org/r/20240625180538.73134-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Implement schemes_update_tried_regions DAMON sysfs command on
_damon_sysfs.py, to use on implementations of future tests for the
feature.

Link: https://lkml.kernel.org/r/20240625180538.73134-3-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>