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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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 41407A0003 X-Rspamd-Server: rspam06 X-Stat-Signature: 3ydjf1d1sze3d976qxyoteuseqsp18f9 X-HE-Tag: 1753031819-237650 X-HE-Meta: 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 p4fFvoYz P8fXkmM2Qaf2OTIdSQSUs7m3NmdLq7/3JqCUpsd9EAwLnanqpv6bJ41FRP7RDLxhGw1pAHzxAxfq14c7soPZvxP88H/OvHTTJk1s+zHvjEcZhwjFji9LZztLDoWFBgZNnrWXuenyZvb24G7Mkiwla0akZWiPgckbnzUI7RrtyDohswGqX98jwpuyQLYui4+hiaLyaxqETqKjIALjnZtx5lAupKZZNuHeoMd7jk/jKWikYsqFDLXq4W9eTCW1YFDanaq3tDadxHlSvqCwzesxqCN/lnQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: _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 +class DamosWatermarks: + metric = None + interval = None + high = None + mid = None + low = None + scheme = None # owner scheme + + def __init__(self, metric='none', interval=0, high=0, mid=0, low=0): + self.metric = metric + self.interval = interval + self.high = high + self.mid = mid + self.low = low + + def sysfs_dir(self): + return os.path.join(self.scheme.sysfs_dir(), 'watermarks') + + def stage(self): + err = write_file(os.path.join(self.sysfs_dir(), 'metric'), self.metric) + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'interval_us'), + self.interval) + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'high'), self.high) + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'mid'), self.mid) + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'low'), self.low) + if err is not None: + return err + class DamosStats: nr_tried = None sz_tried = None @@ -190,6 +226,7 @@ class Damos: action = None access_pattern = None quota = None + watermarks = None apply_interval_us = None # todo: Support watermarks, stats idx = None @@ -199,12 +236,15 @@ class Damos: tried_regions = None def __init__(self, action='stat', access_pattern=DamosAccessPattern(), - quota=DamosQuota(), apply_interval_us=0): + quota=DamosQuota(), watermarks=DamosWatermarks(), + apply_interval_us=0): self.action = action self.access_pattern = access_pattern self.access_pattern.scheme = self self.quota = quota self.quota.scheme = self + self.watermarks = watermarks + self.watermarks.scheme = self self.apply_interval_us = apply_interval_us def sysfs_dir(self): @@ -227,9 +267,7 @@ class Damos: if err is not None: return err - # disable watermarks - err = write_file( - os.path.join(self.sysfs_dir(), 'watermarks', 'metric'), 'none') + err = self.watermarks.stage() if err is not None: return err -- 2.39.5