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Thu, 13 Feb 2025 01:45:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739411100; bh=NgazBziN0MDu+DwcW8IQ50YvCEMXV3o8RNioTMnFdIs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B56yflNN+YVZte1bFv2Xk9dBJtNTjgVLwEg7xjgcpxG9ldYoO0PYjocz2DqQBaQZL ItLkxeJbNJXpZgXgg+xMAtMfyT7Mpn0Z63sWdimkxqSZk9N3uvG+6faf0QdYW99lFj u+Dr2e3mxkN9uKd5um7vyXiXRzMk40LJqrA5equavDWuc+MDKHJyiv3IFtTJDQqsBC WWN4+IWOKsgCdELoHe6lz6hYQR0+USQPYax+1wEJCdb/4/kTc1iI6uYsFJYo3iGaSr 1vO5fRahKsJEwifDz3jmLGLLlCpJ5wkeaiFGR9GFK8fenkuI/eXPMvKisMGfDYL0cr Yg8feMnQAjyhw== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 7/8] Docs/ABI/damon: document intervals auto-tuning ABI Date: Wed, 12 Feb 2025 17:44:37 -0800 Message-Id: <20250213014438.145611-8-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250213014438.145611-1-sj@kernel.org> References: <20250213014438.145611-1-sj@kernel.org> MIME-Version: 1.0 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 9284BA000A X-Stat-Signature: ffogu7riu8amrnbee1cjeoupfmp5c3zd X-Rspam-User: X-HE-Tag: 1739411101-420289 X-HE-Meta: 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 SZn4LeiI t2IYF2sbjUUo6XC5trDIHoMuzG3wARBH6ZIox/YugDBsK3XF8db8tLuXryGRzq1MwouAZz06C32pBqindB1IQamZ2Sm6YZ1VeZvEkkFqxlqF2ZIJLJUR3MczczY79nyNBxAjWwFH3mGlgGpCOVfl6wU6V4alU1PBF3APDjxtLYoUB0UgZhjDlO8CTHoyV4tBBWIwLCoFlXq9ZkNSO9LRBcQsBPBaC3Abr41qiQl1mP9uP4eNbdlTQmq7hSj7bgtzYu3g7pLTbNFvrm7c= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Document the DAMON user-space ABI for DAMON sampling and aggregation intervals auto-tuning. Signed-off-by: SeongJae Park --- .../ABI/testing/sysfs-kernel-mm-damon | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon index ccd13ca668c8..77603b5f7c0c 100644 --- a/Documentation/ABI/testing/sysfs-kernel-mm-damon +++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon @@ -91,6 +91,36 @@ Description: Writing a value to this file sets the update interval of the DAMON context in microseconds as the value. Reading this file returns the value. +What: /sys/kernel/mm/damon/admin/kdamonds//contexts//monitoring_attrs/intervals/intrvals_goal/samples_bp +Date: Feb 2025 +Contact: SeongJae Park +Description: Writing a value to this file sets the monitoring intervals + auto-tuning target positive access check samples ratio within + the given time interval (aggrs in same directory), in bp + (1/10,000). Reading this file returns the value. + +What: /sys/kernel/mm/damon/admin/kdamonds//contexts//monitoring_attrs/intervals/intrvals_goal/aggrs +Date: Feb 2025 +Contact: SeongJae Park +Description: Writing a value to this file sets the time interval to achieve + the monitoring intervals auto-tuning target positive access + check samples ratio (samples_bp in same directory) within. + Reading this file returns the value. + +What: /sys/kernel/mm/damon/admin/kdamonds//contexts//monitoring_attrs/intervals/intrvals_goal/min_sample_us +Date: Feb 2025 +Contact: SeongJae Park +Description: Writing a value to this file sets the minimum value of + auto-tuned sampling interval in microseconds. Reading this + file returns the value. + +What: /sys/kernel/mm/damon/admin/kdamonds//contexts//monitoring_attrs/intervals/intrvals_goal/max_sample_us +Date: Feb 2025 +Contact: SeongJae Park +Description: Writing a value to this file sets the maximum value of + auto-tuned sampling interval in microseconds. Reading this + file returns the value. + What: /sys/kernel/mm/damon/admin/kdamonds//contexts//monitoring_attrs/nr_regions/min WDate: Mar 2022