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selftests/damon/_damon_sysfs: support failed region quota charge ratio

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Extend _damon_sysfs.py for DAMOS action failed regions quota charge ratio
setup, so that we can add kselftest for the new feature.

Link: https://lore.kernel.org/20260428013402.115171-10-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2026-04-27 18:33:58 -07:00 committed by Andrew Morton
parent 0a605b4b67
commit 588f08518f
1 changed files with 19 additions and 2 deletions
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21
tools/testing/selftests/damon/_damon_sysfs.py
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@ -132,14 +132,17 @@ class DamosQuota:
goals = None # quota goals
goal_tuner = None # quota goal tuner
reset_interval_ms = None # quota reset interval
fail_charge_num = None
fail_charge_denom = None
weight_sz_permil = None
weight_nr_accesses_permil = None
weight_age_permil = None
scheme = None # owner scheme
def __init__(self, sz=0, ms=0, goals=None, goal_tuner='consist',
reset_interval_ms=0, weight_sz_permil=0,
weight_nr_accesses_permil=0, weight_age_permil=0):
reset_interval_ms=0, fail_charge_num=0, fail_charge_denom=0,
weight_sz_permil=0, weight_nr_accesses_permil=0,
weight_age_permil=0):
self.sz = sz
self.ms = ms
self.reset_interval_ms = reset_interval_ms
@ -151,6 +154,8 @@ class DamosQuota:
for idx, goal in enumerate(self.goals):
goal.idx = idx
goal.quota = self
self.fail_charge_num = fail_charge_num
self.fail_charge_denom = fail_charge_denom
def sysfs_dir(self):
return os.path.join(self.scheme.sysfs_dir(), 'quotas')
@ -197,6 +202,18 @@ class DamosQuota:
os.path.join(self.sysfs_dir(), 'goal_tuner'), self.goal_tuner)
if err is not None:
return err
err = write_file(
os.path.join(self.sysfs_dir(), 'fail_charge_num'),
self.fail_charge_num)
if err is not None:
return err
err = write_file(
os.path.join(self.sysfs_dir(), 'fail_charge_denom'),
self.fail_charge_denom)
if err is not None:
return err
return None
class DamosWatermarks: