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b=idvUACI26/k1C0XqqOqWLVI4Rmd9LGPJ9tmtyN0+S0BIaSijEBokM8ybeEcPKqkur oSl27LswLlmXfrrdEo3aKSQOYEMks9MGB4DaSFKN76JIynYpO8lHIcbMn0xj9ErOSY xXaJXh6YEohELcOQIRfkca8J5XKHDp6fegGNeTXAaHV1kxDxxQWMMKA7A1jSwyNmIG k69Eg+VgQiPtbYVCcKn3SI0tWaCENb53qOA0UCH/VkUMmZY37Dy6rLnt3dL72B2wFj nYqf/a8IBpk3u9T7GP1AhBBltHkKBNZsz9GwDzHGSvOt8TMYmPZN0EIAq67hua6vCn iIUu3APb6htcw== From: SJ Park To: Andrew Morton Cc: SJ Park , Shuah Khan , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 3/6] selftests/damon/_damon_sysfs: implement DamonProbes Date: Wed, 2 Sep 2026 07:03:09 -0700 Message-ID: <20260902140313.85983-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260902140313.85983-1-sj@kernel.org> References: <20260902140313.85983-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 74p8igqpx6jubf3rsrqdwxcxusbo397b X-Rspamd-Queue-Id: CF38318000A X-Rspamd-Server: rspam02 X-Rspam-User: X-HE-Tag: 1788357819-925309 X-HE-Meta: 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 ze2b78Cx DjMisFERBZi5yHBmC1SJkNZWPTmTjwom4MMLz4ih/YEnO56rvWzql5XgTA/yfCJOIz55Na+7Eng1XKIfeTrpVb7N8c2+Q22tcvqLUuebXMjIKAjH7FoKWKGv1cdcm7VFy+AXr5qFz0ge/H1SWse0NQfeWa0YcoCK9a4yBOShcZ3as1nqVxgsTzP3WZ+V9Gi1EMhfO++cGs6ycnJ7ZnEZYfej9VNJ+N5FXR9426J4qnoXReEqyDGzPMc8p6NIMjpMUea2CwxchfWXTxXOmxxJzCMB+GQ== 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 | 125 +++++++++++++++++- 1 file changed, 124 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py index f604b7d6530b3..e7095c3365245 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -570,6 +570,117 @@ 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) + if err is not None: + return err + 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 @@ -577,11 +688,12 @@ 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=None, update_us=1000000, min_nr_regions=10, - max_nr_regions=1000): + max_nr_regions=1000, probes=None): self.sample_us = sample_us self.aggr_us = aggr_us if intervals_goal is None: @@ -591,6 +703,10 @@ 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', @@ -600,6 +716,9 @@ 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) @@ -629,6 +748,10 @@ 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