linux-kernel - [PATCH 7/9] Docs/mm/damon/design: document DAMOS quota auto tuning

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Message-Id: <20231130023652.50284-8-sj@kernel.org>
Date:   Thu, 30 Nov 2023 02:36:50 +0000
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-mm@...ck.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 7/9] Docs/mm/damon/design: document DAMOS quota auto tuning

Document the DAMOS quota auto tuning feature 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 1f7e0586b5fa..947c9df6cd33 100644
--- a/Documentation/mm/damon/design.rst
+++ b/Documentation/mm/damon/design.rst
@@ -346,6 +346,17 @@ the weight will be respected are up to the underlying prioritization mechanism
 implementation.
 
 
+Aim-oriented Feedback-driven Auto-tuning
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Automatic feedback-driven quota tuning.  Instead of setting the absolute quota
+value, users can repeatedly provide numbers representing how much of their goal
+for the scheme is achieved as feedback.  DAMOS then automatically tunes the
+aggressiveness (the quota) of the corresponding scheme.  For example, if DAMOS
+is under achieving the goal, DAMOS automatically increases the quota.  If DAMOS
+is over achieving the goal, it decreases the quota.
+
+
 .. _damon_design_damos_watermarks:
 
 Watermarks
-- 
2.34.1