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b=UNHltkMvmYCby19ALa5wg7iAKSZrOPnDmKLThfiLsot5LVKn3I/V6RJoFxKld+9Q9 uzv6bhF1zedlhP1VAhNYFrt6fS1HFXxRXdjYEFRtJMUfc+x4wIZAmDq2UV0b4B8S9D SD+V1ljngrWJ0h9vRtZEwmj423oTf6w6jdy0GY6p5+KIQR2jLDckDWjiFpF8PyD6rk mtDx7q+uMF70kX/6qoy+7qqR0aZsgdrR8HU+Bf/3l9SDpEZgRhLQaRXlCXq749rhmA E1A41s5XuIusM6c3UfQGGLBj0PD3fglGW4UvzhluJ4emmj4VKtVnWz6HNO0N/1DDkq /ioM5AGPNdtaw== From: SJ Park To: Cc: SJ Park , Shuah Khan , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 3/6] selftests/damon/_damon_sysfs: implement DamonProbes Date: Wed, 29 Jul 2026 07:47:34 -0700 Message-ID: <20260729144738.90895-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260729144738.90895-1-sj@kernel.org> References: <20260729144738.90895-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: D4AAD80012 X-Stat-Signature: ax5qyyu9khxgu98rdrony9u58muqznyj X-HE-Tag: 1785336464-107481 X-HE-Meta: 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 H7BUcor6 HcXitvrmBf49GrHvmX5F8X5ZEmtW8eJ4GqnVUPFrzt81krqLKfC1ytfedBc1yKENiSlB6mOeiDv1CLK21CEjdfqltytAzXNygoP+C+cpOFrq8Cl42WkHek+BT9+c/4wpJARUMz0VthwSR2L0DuFOFK/bZJI5/KzSDN5SHQKznlsIvLil1RPVtBIoQ76ZlG7YPh04fnNggJT4Ii2W4Oqn0rQXl3UP45L4bWcy1yJKX58x5zJ13+qHY6Q9YxPv5HQJIcgo2+CeMzop+69kz+GtY8o5X3tbQV9+pklknw/dHZGG5iC5ALhA4piE+ou9cwkd2vKqoLR2fStmazuPrsZFBDoxSL8+qwacs7RvY Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Extend _damon_sysfs.py to support staging and committing DAMON probes. It will be used for setting DAMON probes via sysfs changes for testing purposes. Signed-off-by: SJ Park --- tools/testing/selftests/damon/_damon_sysfs.py | 123 +++++++++++++++++- 1 file changed, 122 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py index e6a2265d721e8..d6afb5b2f0a4a 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -558,6 +558,115 @@ class IntervalsGoal: return err return None +class DamonFilter: + type_ = None + matching = None + allow = None + filters = None + path = None + idx = None + + def __init__(self, type_='anon', matching=False, allow=False, path=None): + self.type_ = type_ + self.matching = matching + self.allow = allow + self.path = path + + def sysfs_dir(self): + return os.path.join(self.filters.sysfs_dir(), '%d' % self.idx) + + def stage(self): + err = write_file(os.path.join(self.sysfs_dir(), 'type'), self.type_) + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'matching'), + 'Y' if self.matching else 'N') + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'allow'), + 'Y' if self.allow else 'N') + if err is not None: + return err + if self.type_ == 'memcg': + err = write_file(os.path.join(self.sysfs_dir(), 'path'), self.path) + if err is not None: + return err + return None + +class DamonFilters: + filters = None + probe = None + + def __init__(self, filters=None): + if filters is None: + filters = [] + self.filters = filters + for idx, filter in enumerate(self.filters): + filter.filters = self + filter.idx = idx + + def sysfs_dir(self): + return os.path.join(self.probe.sysfs_dir(), 'filters') + + def stage(self): + err = write_file( + os.path.join(self.sysfs_dir(), 'nr_filters'), + len(self.filters)) + if err is not None: + return err + for filter in self.filters: + err = filter.stage() + if err is not None: + return err + return None + +class DamonProbe: + weight = None + filters = None + probes = None + idx = None + + def __init__(self, weight=0, filters=None): + self.weight = weight + if filters is None: + filters = DamonFilters() + self.filters = filters + self.filters.probe = self + + def sysfs_dir(self): + return os.path.join(self.probes.sysfs_dir(), '%d' % self.idx) + + def stage(self): + err = write_file( + os.path.join(self.sysfs_dir(), 'weight'), '%d' % self.weight) + return self.filters.stage() + +class DamonProbes: + probes = None + attrs = None + + def __init__(self, probes=None): + if probes is None: + probes = [] + self.probes = probes + for idx, probe in enumerate(self.probes): + probe.probes = self + probe.idx = idx + + def sysfs_dir(self): + return os.path.join(self.attrs.sysfs_dir(), 'probes') + + def stage(self): + err = write_file(os.path.join(self.sysfs_dir(), 'nr_probes'), + len(self.probes)) + if err is not None: + return err + for probe in self.probes: + err = probe.stage() + if err is not None: + return err + return None + class DamonAttrs: sample_us = None aggr_us = None @@ -565,11 +674,12 @@ class DamonAttrs: update_us = None min_nr_regions = None max_nr_regions = None + probes = None context = None def __init__(self, sample_us=5000, aggr_us=100000, intervals_goal=IntervalsGoal(), update_us=1000000, - min_nr_regions=10, max_nr_regions=1000): + min_nr_regions=10, max_nr_regions=1000, probes=None): self.sample_us = sample_us self.aggr_us = aggr_us self.intervals_goal = intervals_goal @@ -577,6 +687,10 @@ class DamonAttrs: self.update_us = update_us self.min_nr_regions = min_nr_regions self.max_nr_regions = max_nr_regions + if probes is None: + probes = DamonProbes() + self.probes = probes + self.probes.attrs = self def interval_sysfs_dir(self): return os.path.join(self.context.sysfs_dir(), 'monitoring_attrs', @@ -586,6 +700,9 @@ class DamonAttrs: return os.path.join(self.context.sysfs_dir(), 'monitoring_attrs', 'nr_regions') + def sysfs_dir(self): + return os.path.join(self.context.sysfs_dir(), 'monitoring_attrs') + def stage(self): err = write_file(os.path.join(self.interval_sysfs_dir(), 'sample_us'), self.sample_us) @@ -615,6 +732,10 @@ class DamonAttrs: if err is not None: return err + err = self.probes.stage() + if err is not None: + return err + class DamonCtx: ops = None monitoring_attrs = None -- 2.47.3