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Tue, 25 Jun 2024 18:05:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719338749; bh=gJIZChP/stfR9DmaAxQLH0gVjnmXTejsJJ91eVHAK8U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YJX/VNhoKPVAhVJq94R8nCXyATG+V3v1HHEVqCWWYENRsI8vidfdlUx0uJE/rbRXU CAOT9SwrvkvU2hfYyWb3prqwvbYJk9AXHcSvhoKxQMkx2rkCe4dz7Z+Y+yvRY+K3XH Q/DiY6lgayFm5gtQqAZ7WLu0JE1vBwmEmHDV7IHUvHmm+RzJDENGNi86l8M8QFIaNH +SrafYC6A892YXUxjZy0vhqQ8lAQXOCgor4LvUVNoeVU949S/rU0OqzlHVu1oSJ5L5 C9iKcuN40JhoVBFx/BDVzmeSAphRqMWG58z51QK7OwLFwynp1A3Wz1q+ncyP0pezzl 8nNEVKL/9SIbg== 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 7/8] _damon_sysfs: implement commit() for online parameters update Date: Tue, 25 Jun 2024 11:05:37 -0700 Message-Id: <20240625180538.73134-8-sj@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240625180538.73134-1-sj@kernel.org> References: <20240625180538.73134-1-sj@kernel.org> MIME-Version: 1.0 X-Stat-Signature: pcto9e7gm8h4p1qkxci3odtro514bbwp X-Rspamd-Queue-Id: 6277C100030 X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1719338750-118639 X-HE-Meta: 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 pdo8itz1 PVIxCW37srbd4anUnwKSEw1C/TnrlmhOcU0jVs5Gtmd31hIny8PSFt7gZPgC/AEaMEC4HuNFglcTsgffG65py+e7lMdsNfZ9xvLu+Rlw4V5yMyV4QYNtuMYAFkESdz0HKUMVZu06nDv7EqGfmsrGXcbKHDTrdsZd/q+61srFYuEtH2CoEfWqUfhyWUDsCAvhK+pjtOFIFodKunumZ9k1DN5ou153N2bcorXnQ+g86bWNmwR68NmO25w276vbidYS/0Azuv4uOCnOn380BCXn7Q/NVb7jfqsLd0u2f 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: Users can update DAMON parameters while it is running, using 'commit' DAMON sysfs interface command. For testing the feature in future tests, implement a function for doing that on the test-purpose DAMON sysfs interface wrapper Python module. Signed-off-by: SeongJae Park --- tools/testing/selftests/damon/_damon_sysfs.py | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py index 17352b9d204d..6e136dc3df19 100644 --- a/tools/testing/selftests/damon/_damon_sysfs.py +++ b/tools/testing/selftests/damon/_damon_sysfs.py @@ -481,6 +481,25 @@ class Kdamond: goal.effective_bytes = int(content) return None + def commit(self): + nr_contexts_file = os.path.join(self.sysfs_dir(), + 'contexts', 'nr_contexts') + content, err = read_file(nr_contexts_file) + 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 is not None: + return err + + for context in self.contexts: + err = context.stage() + if err is not None: + return err + err = write_file(os.path.join(self.sysfs_dir(), 'state'), 'commit') + return err + + def commit_schemes_quota_goals(self): for context in self.contexts: for scheme in context.schemes: