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b=GXL1Az/A5Qx0porzJ8JKnyZl5ezJjXdePTc02sfmPUlczN2UdOJRhIfYvAP3670jw SOe2sYZ+ReqonspedCwBQ7iCrDBJBF1c+dgDYjYrk4PtcpWpn6L22W71K+Jeud6X0V WKQyZBigJSs7iC5zzpmvLqx/ZCkMebD4sTLKP6HccuMej5JB7HNBmpD1kqXGo2JxR7 2QF0fkVkE0dWmyPXrH+Q/HOdQ1+gGgbPcXCy1hm0LjRzJyuBiKEXhxOb1g68Hjgx6E WSz7kxFoVDhIXfDmtHnNBkDetEnKj6qaR9mbQB/02v5FdCrmbYI4thaWHxKIlAjjZi uSPt5Vs6YI88Q== 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 v1.1 3/6] selftests/damon/_damon_sysfs: implement DamonProbes Date: Wed, 29 Jul 2026 21:39:40 -0700 Message-ID: <20260730043944.146030-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260730043944.146030-1-sj@kernel.org> References: <20260730043944.146030-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 6ACB2100005 X-Stat-Signature: zfym9347jwt1mof68f63b1ifen9eo98b X-Rspam-User: X-HE-Tag: 1785386397-555568 X-HE-Meta: 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 XlY+1Ndm awV5BAdsi29a5KxkWcmQSofrkm8Vg1fvkdx75XdudfEnvpmNRP6Q98hCJA2OZae/xi60TxhES9RX82866Qu4Pi9hNGG10qSvEkjIxsGYTnomROHsCGu5nP6VIrP/r9kYQyabhO2t1G/t3uNn0+FRfjZymRvECDvtVBXuS8ESROU4BbJQsSD3wPF3s1RsOO50i4NL2iG9x5TTc5GXPQW2lxt1hHqiKcXbpweus2IGfOC4b/RlM6Gz8tBy8+THv1Wv6CVY1xx7H+2mpkbOYE4Nhg9lsbixjmUEMkUDi3dwH6O2CmU67EcOZyrfkYetcSgm9PwTPOCuP7k8FTghuz9a/Dg/MEQv4X6UOQYfB 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 e6a2265d721e8..94bf0aaae9f59 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -558,6 +558,117 @@ 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 @@ -565,11 +676,12 @@ 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 +689,10 @@ 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 +702,9 @@ 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 +734,10 @@ 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