From patchwork Fri May 3 18:03:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: SeongJae Park X-Patchwork-Id: 13653178 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 50DC215886D; Fri, 3 May 2024 18:03:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714759405; cv=none; b=iG5buyECkrIPCsEQNYD1tN7ZQAl25fx/mTiarsHLP+E1SBG0ZRMi1T96wgceHp4P+Rs0OzydhghBrMdKJxAKQstUM8tGRzVH9xzoB16ESIBTy5ZPgnwwVVu/C+jgOZy58DCd8qW7KqpO+wZ+6yJKCprd7p2WOWWVqVkEdnwxI5U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714759405; c=relaxed/simple; bh=O896s/BxYxzWe3ajbJ4BImY+pg58FthjeGXrHo/B0j4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=cDIv9AoC1YlLz0W0p/Bag9AfA4L30vnJhewDWoY1r0r7hZQaTsUVQthP1Av4efoTiDVykSSGhQ7fFkKte9pi2HfcUu0giYnj8qHZz5ChrtKNzwvEsggpNMmAY7Mq7IH6UV10P/MtYbxOC+x4zigSjIGTsyMB2pUcOuVOUjw8FtA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZA9XkNE+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZA9XkNE+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 574DBC4AF19; Fri, 3 May 2024 18:03:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1714759404; bh=O896s/BxYxzWe3ajbJ4BImY+pg58FthjeGXrHo/B0j4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZA9XkNE+qEOq2aveG/dzoklGtVvPqKqMVRlrhy5FdFGRb1twcaqBmFuykp3wJR9Fz V1gFei8V8hmOgx0Om3/MYS0lSOy1AmFTu18wzIOd+LjyNSmfNDrPVLX2kNVSBy91yc OJXEjSWp0OSOWag8SUTM2g4O3TPJdk4QbqC302K/rzrAFORsQ/DHAGbR/5AM4D07/j wsXXEp1fS6dT/bFqk4Cb6AD+nxljDwPENxHadwdLiXv6mOhzyASMhGYVtAMdAqKGbT VkA8ok60PcpOl5uaeqqAJxKuTnP70hou30XOt2n1FQAuAmYZWLrLr7/dI3BlDVcrWy cFi3wMLJSxP+A== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , Shuah Khan , damon@lists.linux.dev, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 04/10] selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None' Date: Fri, 3 May 2024 11:03:12 -0700 Message-Id: <20240503180318.72798-5-sj@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240503180318.72798-1-sj@kernel.org> References: <20240503180318.72798-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 _damon_sysfs.py is using '==' or '!=' for 'None'. Since 'None' is a singleton, using 'is' or 'is not' is more efficient. Use the more efficient one. Signed-off-by: SeongJae Park --- tools/testing/selftests/damon/_damon_sysfs.py | 80 +++++++++---------- 1 file changed, 40 insertions(+), 40 deletions(-) diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py index 5367e98817a9..01d4b8022d50 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -45,11 +45,11 @@ class DamosAccessPattern: self.nr_accesses = nr_accesses self.age = age - if self.size == None: + if self.size is None: self.size = [0, 2**64 - 1] - if self.nr_accesses == None: + if self.nr_accesses is None: self.nr_accesses = [0, 2**64 - 1] - if self.age == None: + if self.age is None: self.age = [0, 2**64 - 1] def sysfs_dir(self): @@ -58,27 +58,27 @@ class DamosAccessPattern: def stage(self): err = write_file( os.path.join(self.sysfs_dir(), 'sz', 'min'), self.size[0]) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.sysfs_dir(), 'sz', 'max'), self.size[1]) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'nr_accesses', 'min'), self.nr_accesses[0]) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'nr_accesses', 'max'), self.nr_accesses[1]) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.sysfs_dir(), 'age', 'min'), self.age[0]) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.sysfs_dir(), 'age', 'max'), self.age[1]) - if err != None: + if err is not None: return err qgoal_metric_user_input = 'user_input' @@ -137,14 +137,14 @@ class DamosQuota: def stage(self): err = write_file(os.path.join(self.sysfs_dir(), 'bytes'), self.sz) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'ms'), self.ms) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'reset_interval_ms'), self.reset_interval_ms) - if err != None: + if err is not None: return err nr_goals_file = os.path.join(self.sysfs_dir(), 'goals', 'nr_goals') @@ -201,30 +201,30 @@ class Damos: def stage(self): err = write_file(os.path.join(self.sysfs_dir(), 'action'), self.action) - if err != None: + if err is not None: return err err = self.access_pattern.stage() - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'apply_interval_us'), '%d' % self.apply_interval_us) - if err != None: + if err is not None: return err err = self.quota.stage() - if err != None: + if err is not None: return err # disable watermarks err = write_file( os.path.join(self.sysfs_dir(), 'watermarks', 'metric'), 'none') - if err != None: + if err is not None: return err # disable filters err = write_file( os.path.join(self.sysfs_dir(), 'filters', 'nr_filters'), '0') - if err != None: + if err is not None: return err class DamonTarget: @@ -243,7 +243,7 @@ class DamonTarget: def stage(self): err = write_file( os.path.join(self.sysfs_dir(), 'regions', 'nr_regions'), '0') - if err != None: + if err is not None: return err return write_file( os.path.join(self.sysfs_dir(), 'pid_target'), self.pid) @@ -275,27 +275,27 @@ class DamonAttrs: def stage(self): err = write_file(os.path.join(self.interval_sysfs_dir(), 'sample_us'), self.sample_us) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.interval_sysfs_dir(), 'aggr_us'), self.aggr_us) - if err != None: + if err is not None: return err err = write_file(os.path.join(self.interval_sysfs_dir(), 'update_us'), self.update_us) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.nr_regions_range_sysfs_dir(), 'min'), self.min_nr_regions) - if err != None: + if err is not None: return err err = write_file( os.path.join(self.nr_regions_range_sysfs_dir(), 'max'), self.max_nr_regions) - if err != None: + if err is not None: return err class DamonCtx: @@ -329,24 +329,24 @@ class DamonCtx: def stage(self): err = write_file( os.path.join(self.sysfs_dir(), 'operations'), self.ops) - if err != None: + if err is not None: return err err = self.monitoring_attrs.stage() - if err != None: + if err is not None: return err nr_targets_file = os.path.join( self.sysfs_dir(), 'targets', 'nr_targets') content, err = read_file(nr_targets_file) - if err != None: + if err is not None: return err if int(content) != len(self.targets): err = write_file(nr_targets_file, '%d' % len(self.targets)) - if err != None: + if err is not None: return err for target in self.targets: err = target.stage() - if err != None: + if err is not None: return err nr_schemes_file = os.path.join( @@ -356,11 +356,11 @@ class DamonCtx: return err if int(content) != len(self.schemes): err = write_file(nr_schemes_file, '%d' % len(self.schemes)) - if err != None: + if err is not None: return err for scheme in self.schemes: err = scheme.stage() - if err != None: + if err is not None: return err return None @@ -384,16 +384,16 @@ class Kdamond: nr_contexts_file = os.path.join(self.sysfs_dir(), 'contexts', 'nr_contexts') content, err = read_file(nr_contexts_file) - if err != None: + if err is not None: return err if int(content) != len(self.contexts): err = write_file(nr_contexts_file, '%d' % len(self.contexts)) - if err != None: + if err is not None: return err for context in self.contexts: err = context.stage() - if err != None: + if err is not None: return err err = write_file(os.path.join(self.sysfs_dir(), 'state'), 'on') return err @@ -401,20 +401,20 @@ class Kdamond: def update_schemes_tried_bytes(self): err = write_file(os.path.join(self.sysfs_dir(), 'state'), 'update_schemes_tried_bytes') - if err != None: + if err is not None: return err for context in self.contexts: for scheme in context.schemes: content, err = read_file(os.path.join(scheme.sysfs_dir(), 'tried_regions', 'total_bytes')) - if err != None: + if err is not None: return err scheme.tried_bytes = int(content) def update_schemes_stats(self): err = write_file(os.path.join(self.sysfs_dir(), 'state'), 'update_schemes_stats') - if err != None: + if err is not None: return err for context in self.contexts: for scheme in context.schemes: @@ -423,7 +423,7 @@ class Kdamond: 'sz_applied', 'qt_exceeds']: content, err = read_file( os.path.join(scheme.sysfs_dir(), 'stats', stat)) - if err != None: + if err is not None: return err stat_values.append(int(content)) scheme.stats = DamosStats(*stat_values) @@ -471,10 +471,10 @@ class Kdamonds: def start(self): err = write_file(os.path.join(self.sysfs_dir(), 'nr_kdamonds'), '%s' % len(self.kdamonds)) - if err != None: + if err is not None: return err for kdamond in self.kdamonds: err = kdamond.start() - if err != None: + if err is not None: return err return None