linux.git/tools/testing/selftests/damon/_damon_sysfs.py, branch vsnprintf

_damon_sysfs: implement commit() for online parameters update

2024-07-04T02:30:29+00:00

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 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: implement kdamonds stop function

2024-07-04T02:30:28+00:00

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 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: support schemes_update_tried_regions

2024-07-04T02:30:28+00:00

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 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'

2024-05-11T22:41:34+00:00

_damon_sysfs.py is using '==' or '!=' for 'None'.  Since 'None' is a
singleton, using 'is' or 'is not' is more efficient.  Use the more
efficient one.

Link: https://lkml.kernel.org/r/20240503180318.72798-5-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Jonathan Corbet 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts

2024-05-11T22:41:33+00:00

_damon_sysfs.py assumes sysfs is mounted at /sys.  In some systems, that
might not be true.  Find the mount point from /proc/mounts file content.

Link: https://lkml.kernel.org/r/20240503180318.72798-4-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Jonathan Corbet 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: check errors from nr_schemes file reads

2024-05-11T22:41:33+00:00

DAMON context staging method in _damon_sysfs.py is not checking the
returned error from nr_schemes file read.  Check it.

Link: https://lkml.kernel.org/r/20240503180318.72798-3-sj@kernel.org
Fixes: f5f0e5a2bef9 ("selftests/damon/_damon_sysfs: implement kdamonds start function")
Signed-off-by: SeongJae Park 
Cc: Jonathan Corbet 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: support quota goals

2024-05-11T22:41:32+00:00

Patch series "selftests/damon: add DAMOS quota goal test".

Extend DAMON selftest-purpose sysfs wrapper to support DAMOS quota goal,
and implement a simple selftest for the feature using it.


This patch (of 2):

The DAMON sysfs test purpose wrapper, _damon_sysfs.py, is not supporting
quota goals.  Implement the support for testing the feature.  The test
will be implemented and added by the following commit.

Link: https://lkml.kernel.org/r/20240502172718.74166-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20240502172718.74166-2-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: support DAMOS apply interval

2024-02-22T18:24:56+00:00

Update the test-purpose DAMON sysfs control Python module to support DAMOS
apply interval.

Link: https://lkml.kernel.org/r/20240207203134.69976-4-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: support DAMOS stats

2024-02-22T18:24:56+00:00

Update the test-purpose DAMON sysfs control Python module to support DAMOS
stats.

Link: https://lkml.kernel.org/r/20240207203134.69976-3-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon/_damon_sysfs: support DAMOS quota

2024-02-22T18:24:56+00:00

Patch series "selftests/damon: add more tests for core functionalities and
corner cases".

Continue DAMON selftests' test coverage improvement works with a trivial
improvement of the test code itself.  The sequence of the patches in
patchset is as follows.

The first five patches add two DAMON core functionalities tests.  Those
begins with three patches (patches 1-3) that update the test-purpose DAMON
sysfs interface wrapper to support DAMOS quota, stats, and apply interval
features, respectively.  The fourth patch implements and adds a selftest
for DAMOS quota feature, using the DAMON sysfs interface wrapper's newly
added support of the quota and the stats feature.  The fifth patch further
implements and adds a selftest for DAMOS apply interval using the DAMON
sysfs interface wrapper's newly added support of the apply interval and
the stats feature.

Two patches (patches 6 and 7) for implementing and adding two corner cases
handling selftests follow.  Those try to avoid two previously fixed bugs
from recurring.

Finally, a patch for making DAMON debugfs selftests dependency checker to
use /proc/mounts instead of the hard-coded mount point assumption follows.


This patch (of 8):

Update the test-purpose DAMON sysfs control Python module to support DAMOS
quota.

Link: https://lkml.kernel.org/r/20240207203134.69976-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20240207203134.69976-2-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton