From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4637E4A091F; Wed, 2 Sep 2026 14:03:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788357820; cv=none; b=kco2Qjlbu7MJ0u+eDiV6awZCaJEKZBxwWdB+OAjjicuCqW59Izhu7E7JSmnKKYPXw+/3MYZCZvpRNfZZIMVQqH71iYc15NdaXdxtN+LFCec0I/icbM0AjfuMBHHOwnZvPp2Y1qHNjWqdRedt9xrnzhNLh2DHjWTlakJbRm/psc4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788357820; c=relaxed/simple; bh=e9XXcPGdiu7jKQNaRWID+VQr3UMeObYB3tZ/IXjFhCE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DLstKgNiHnZxEhIHqBLT0w6k4dYlSh74+LcBsgruWYtyhzCHAtS9uWkQhGc564DW3iACSMkBIQQvZayoXlTp5/+NCac3Rz540zexb6vGeGP1o5rtXcJSRK8potKg4Et8n0R+8njVJO0Ua1VCP+wOoClfm45q3QBYpoGog3vq/xk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=idvUACI2; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="idvUACI2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA0AF1F00A3F; Wed, 2 Sep 2026 14:03:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788357819; bh=d7E8/+9tPmws87WGovoxRC/oQMT8cFB9YIJxkAr2MhY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; 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> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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