linux.git/tools/testing/selftests/damon, branch v6.10

selftests/damon: classify tests for functionalities and regressions

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

DAMON selftests can be classified into two categories: functionalities and
regressions.  Functionality tests are for checking if the function is
working as specified, while the regression tests are basically reproducers
of previously reported and fixed bugs.  The tests of the categories are
mixed in the selftests Makefile.  Separate those for easier understanding
of the types of tests.

Link: https://lkml.kernel.org/r/20240503180318.72798-6-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Jonathan Corbet 
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: add a test for DAMOS quota goal

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

Add a selftest for DAMOS quota goal.  It tests the feature by setting a
user_input metric based goal, change the current feedback, and check if
the effective quota size is increased and decreased as expected.

Link: https://lkml.kernel.org/r/20240502172718.74166-3-sj@kernel.org
Signed-off-by: SeongJae Park 
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: add access_memory to .gitignore

2024-03-05T01:01:16+00:00

This binary is missing in the .gitignore and stays as an untracked file.

Link: https://lore.kernel.org/r/20240214-damon_selftest_gitignore-v1-1-f517d0f9f783@gmail.com
Link: https://lkml.kernel.org/r/20240221211148.46522-3-sj@kernel.org
Signed-off-by: Javier Carrasco 
Singed-off-by: SeongJae Park 
Reported-by: Bernd Edlinger 
Closes: https://lore.kernel.org/all/AS8P193MB1285C963658008F1B2702AF7E4792@AS8P193MB1285.EURP193.PROD.OUTLOOK.COM/
Reviewed-by: SeongJae Park 
Cc: Vincenzo Mezzela 
Signed-off-by: Andrew Morton

selftest: damon: fix minor typos in test logs

2024-03-05T01:01:16+00:00

Patch series "selftests/damon: misc fixes".

Misc fixes for DAMON selftets on behalf of the original authors.


This patch (of 2):

This patch resolves a spelling error in the test log, preventing potential
confusion.

It is submitted as part of my application to the "Linux Kernel Bug Fixing
Spring Unpaid 2024" mentorship program of the Linux Foundation.

Link: https://lore.kernel.org/r/20240204122523.14160-1-vincenzo.mezzela@gmail.com
Link: https://lkml.kernel.org/r/20240221211148.46522-2-sj@kernel.org
Signed-off-by: Vincenzo Mezzela 
Signed-off-by: SeongJae Park 
Reviewed-by: SeongJae Park 
Cc: Bernd Edlinger 
Cc: Javier Carrasco 
Signed-off-by: Andrew Morton

selftests/damon/_chk_dependency: get debugfs mount point from /proc/mounts

2024-02-22T18:24:57+00:00

DAMON debugfs selftests dependency checker assumes debugfs would be
mounted at /sys/kernel/debug.  That would be ok for many cases, but some
systems might mounted the file system on some different places.  Parse the
real mount point using /proc/mounts file.

Link: https://lkml.kernel.org/r/20240207203134.69976-9-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton

selftests/damon: add a test for the pid leak of dbgfs_target_ids_write()

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

Commit ebb3f994dd92 ("mm/damon/dbgfs: fix 'struct pid' leaks in
'dbgfs_target_ids_write()'") fixes a pid leak bug in DAMON debugfs
interface, namely dbgfs_target_ids_write() function.  Add a selftest for
the issue to prevent the problem from mistakenly recurring.

Link: https://lkml.kernel.org/r/20240207203134.69976-8-sj@kernel.org
Signed-off-by: SeongJae Park 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton