linux-kernel - [PATCH 08/10] Docs/mm/damon/design: document DAMOS regions walking

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Message-Id: <20250103174400.54890-9-sj@kernel.org>
Date: Fri,  3 Jan 2025 09:43:58 -0800
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: SeongJae Park <sj@...nel.org>,
	Jonathan Corbet <corbet@....net>,
	damon@...ts.linux.dev,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH 08/10] Docs/mm/damon/design: document DAMOS regions walking

DAMOS' regions walking is a feature for efficiently retrieving
monitoring results or DAMOS-internal behavior.  It can be useful for
multiple purposes including investigations and tuning.  Add a section
for it on the design document.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 Documentation/mm/damon/design.rst | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
index 1c8a43b07b00..5385ea04c2fd 100644
--- a/Documentation/mm/damon/design.rst
+++ b/Documentation/mm/damon/design.rst
@@ -540,6 +540,17 @@ To know how user-space can set the watermarks via :ref:`DAMON sysfs interface
 documentation.
 
 
+Regions Walking
+~~~~~~~~~~~~~~~
+
+DAMOS feature allowing users access each region that a DAMOS action has just
+applied.  Using this feature, DAMON :ref:`API <damon_design_api>` allows users
+access full properties of the regions including the access monitoring results.
+:ref:`DAMON sysfs interface <sysfs_interface>` also allows users read the data
+via special :ref:`files <sysfs_schemes_tried_regions>`.
+
+.. _damon_design_api:
+
 Application Programming Interface
 ---------------------------------
 
-- 
2.39.5