From nobody Mon Oct 6 15:12:22 2025 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 436E621E0BB; Sun, 20 Jul 2025 17:16:58 +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=1753031818; cv=none; b=Bq7QZkR+J9pg+JrB+2rwpnZScOqqB+i5H4ts72na4Zb1yoSrhNcoRho4nQWlv3szpgikpysyeGkSDTfdN5uQBqQPxrU2R6SGIvQHgB6Pxi43YVIA5ogKF1TLjHhBTqkEHwNkOkaAJhtV6o7qgV2wdDeTHf5i6jb/EMNxNaCoSzU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753031818; c=relaxed/simple; bh=klDlVkBZ+5xmWtK4VLtAAS75LNGvyVGfZkSj3ruHlzE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KLIhbbJczK8acI7yNnnmDYiC/EOBbx7uzWm2z5AnZPVQvi1NUQpcsvX5SKyZcmwHSTPzm/ueXYZ8PqtRbJ+OilCOOmcbN/k3TEFgJxwDHOguSF6Oj9pDVnyyWJJg/FnO+PCnRXzuGmwg9mmEbIhcGalO+UXKvr6SeSmqRau9bWU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JYPoLVmZ; 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="JYPoLVmZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B50D0C4AF09; Sun, 20 Jul 2025 17:16:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753031817; bh=klDlVkBZ+5xmWtK4VLtAAS75LNGvyVGfZkSj3ruHlzE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JYPoLVmZ8gR5HUNht4q8wFPW50+JhYMZrXs4ViXsVrCiVTi4Nt/Cae2cFYfOCYFv+ vIJIx5iFPDH4OpAb6gQ4OFS0+Ng9lv4mIxenqEsrEb2cg4AChTbjGZQOtvjt5xYLNO ENvfKWzeoD7uwZef3jA3Cv0PjBTVX34Zw4PTVj0jh5sl54/nhbjvv2zwas5SI8pZOU LqkJrHX36lWne5UmoJbVxan1l6phlqmPWtwaZnzwoPEGs8tlfbdaEgkfiWfvCciXIR h5XYcBSNxlwsda+AveNViem7AnqY4xk4ZWLfKYtkOY5jxZninHl7KQdPm5uKnsDW+7 jOJwxwQZUtQcw== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , Shuah Khan , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 01/22] selftests/damon/_damon_sysfs: support DAMOS watermarks setup Date: Sun, 20 Jul 2025 10:16:31 -0700 Message-Id: <20250720171652.92309-2-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250720171652.92309-1-sj@kernel.org> References: <20250720171652.92309-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" _damon_sysfs.py contains code for test-purpose DAMON sysfs interface control. Add support of DAMOS watermarks setup for more tests. Signed-off-by: SeongJae Park --- tools/testing/selftests/damon/_damon_sysfs.py | 46 +++++++++++++++++-- 1 file changed, 42 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/= selftests/damon/_damon_sysfs.py index f587e117472e..d81aa11e3d32 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -165,6 +165,42 @@ class DamosQuota: return err return None =20 +class DamosWatermarks: + metric =3D None + interval =3D None + high =3D None + mid =3D None + low =3D None + scheme =3D None # owner scheme + + def __init__(self, metric=3D'none', interval=3D0, high=3D0, mid=3D0, l= ow=3D0): + self.metric =3D metric + self.interval =3D interval + self.high =3D high + self.mid =3D mid + self.low =3D low + + def sysfs_dir(self): + return os.path.join(self.scheme.sysfs_dir(), 'watermarks') + + def stage(self): + err =3D write_file(os.path.join(self.sysfs_dir(), 'metric'), self.= metric) + if err is not None: + return err + err =3D write_file(os.path.join(self.sysfs_dir(), 'interval_us'), + self.interval) + if err is not None: + return err + err =3D write_file(os.path.join(self.sysfs_dir(), 'high'), self.hi= gh) + if err is not None: + return err + err =3D write_file(os.path.join(self.sysfs_dir(), 'mid'), self.mid) + if err is not None: + return err + err =3D write_file(os.path.join(self.sysfs_dir(), 'low'), self.low) + if err is not None: + return err + class DamosStats: nr_tried =3D None sz_tried =3D None @@ -190,6 +226,7 @@ class Damos: action =3D None access_pattern =3D None quota =3D None + watermarks =3D None apply_interval_us =3D None # todo: Support watermarks, stats idx =3D None @@ -199,12 +236,15 @@ class Damos: tried_regions =3D None =20 def __init__(self, action=3D'stat', access_pattern=3DDamosAccessPatter= n(), - quota=3DDamosQuota(), apply_interval_us=3D0): + quota=3DDamosQuota(), watermarks=3DDamosWatermarks(), + apply_interval_us=3D0): self.action =3D action self.access_pattern =3D access_pattern self.access_pattern.scheme =3D self self.quota =3D quota self.quota.scheme =3D self + self.watermarks =3D watermarks + self.watermarks.scheme =3D self self.apply_interval_us =3D apply_interval_us =20 def sysfs_dir(self): @@ -227,9 +267,7 @@ class Damos: if err is not None: return err =20 - # disable watermarks - err =3D write_file( - os.path.join(self.sysfs_dir(), 'watermarks', 'metric'), 'n= one') + err =3D self.watermarks.stage() if err is not None: return err =20 --=20 2.39.5