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selftests/damon/sysfs.py: test monitoring attribute parameters

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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>
This commit is contained in:
SeongJae Park
2025-06-28 09:04:26 -07:00
committed by Andrew Morton
parent 4ece018976
commit ae3ab07e0d
1 changed files with 32 additions and 2 deletions
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34
tools/testing/selftests/damon/sysfs.py
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@@ -20,6 +20,11 @@ def dump_damon_status_dict(pid):
except Exception as e:
return None, 'json.load fail (%s)' % e
def fail(expectation, status):
print('unexpected %s' % expectation)
print(json.dumps(status, indent=4))
exit(1)
def main():
kdamonds = _damon_sysfs.Kdamonds(
[_damon_sysfs.Kdamond(contexts=[_damon_sysfs.DamonCtx()])])
@@ -34,8 +39,33 @@ def main():
exit(1)
if len(status['contexts']) != 1:
print('number of contexts: %d' % len(status['contexts']))
exit(1)
fail('number of contexts', status)
ctx = status['contexts'][0]
attrs = ctx['attrs']
if attrs['sample_interval'] != 5000:
fail('sample interval', status)
if attrs['aggr_interval'] != 100000:
fail('aggr interval', status)
if attrs['ops_update_interval'] != 1000000:
fail('ops updte interval', status)
if attrs['intervals_goal'] != {
'access_bp': 0, 'aggrs': 0,
'min_sample_us': 0, 'max_sample_us': 0}:
fail('intervals goal')
if attrs['min_nr_regions'] != 10:
fail('min_nr_regions')
if attrs['max_nr_regions'] != 1000:
fail('max_nr_regions')
if ctx['adaptive_targets'] != []:
fail('adaptive_targets')
if ctx['schemes'] != []:
fail('schemes')
kdamonds.stop()
if __name__ == '__main__':