sysfs.py is testing if non-default additional parameters can be committed.
Add a test case for further reducing the parameters to the default set.
Link: https://lkml.kernel.org/r/20250720171652.92309-23-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>
sysfs.py is testing only the default and minimum DAMON parameters. Add
another test case for more non-default additional DAMON parameters
commitment on runtime.
Link: https://lkml.kernel.org/r/20250720171652.92309-22-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 context commitment assertion is hard-coded for a specific test case.
Split it out into a general version that can be reused for different test
cases.
Link: https://lkml.kernel.org/r/20250720171652.92309-21-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 monitoring attributes commitment assertion is hard-coded for a
specific test case. Split it out into a general version that can be
reused for different test cases.
Link: https://lkml.kernel.org/r/20250720171652.92309-20-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>
DAMOS schemes commitment assertion is hard-coded for a specific test case.
Split it out into a general version that can be reused for different test
cases.
Link: https://lkml.kernel.org/r/20250720171652.92309-19-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>
Current DAMOS scheme commitment assertion is not testing DAMOS filters.
Add the test.
Link: https://lkml.kernel.org/r/20250720171652.92309-18-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>
DAMOS scheme commitment assertion is hard-coded for a specific test case.
Split it out into a general version that can be reused for different test
cases.
Link: https://lkml.kernel.org/r/20250720171652.92309-17-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>
Current DAMOS commitment assertion is not testing quota destinations
commitment. Add the test.
Link: https://lkml.kernel.org/r/20250720171652.92309-16-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>
Current DAMOS quota commitment assertion is not testing quota goal
commitment. Add the test.
Link: https://lkml.kernel.org/r/20250720171652.92309-15-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>
DamosQuota commitment assertion is hard-coded for a specific test case.
Split it out into a general version that can be reused for different test
cases.
Link: https://lkml.kernel.org/r/20250720171652.92309-14-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>
DamosWatermarks commitment assertion is hard-coded for a specific test
case. Split it out into a general version that can be reused for
different test cases.
Link: https://lkml.kernel.org/r/20250720171652.92309-13-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>
Commit 4ece018976 ("selftests/damon: add python and drgn-based DAMON
sysfs test") in mm-stable tree introduced sysfs.py that runs drgn for
dumping DAMON status. When the DAMON status dumping fails for reasons
including drgn uninstalled environment, the test fails without stopping
DAMON. Following DAMON selftests that assumes DAMON is not running when
they executed therefore fail. Catch dumping failures and stop DAMON for
that case.
Link: https://lkml.kernel.org/r/20250722060330.56068-1-sj@kernel.org
Fixes: 4ece018976 ("selftests/damon: add python and drgn-based DAMON sysfs test")
Signed-off-by: SeongJae Park <sj@kernel.org>
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202507220707.9c5d6247-lkp@intel.com
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Add DAMON sysfs interface functionality tests for DAMON monitoring
attribute parameters, including intervals, intervals tuning goals, and
min/max number of regions.
Link: https://lkml.kernel.org/r/20250628160428.53115-5-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>
Add a python-written DAMON sysfs functionality selftest. It sets DAMON
parameters using Python module _damon_sysfs, reads updated kernel internal
DAMON status and parameters using a 'drgn' script, namely
drgn_dump_damon_status.py, and compare if the resulted DAMON internal
status is as expected. The test is very minimum at the moment.
Link: https://lkml.kernel.org/r/20250628160428.53115-4-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>
