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authorSeongJae Park <sj@kernel.org>2023-11-30 05:36:50 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-12-12 21:57:04 +0300
commit3143a7bfd2a9852d63a2d88109cf5af49fcf4950 (patch)
tree4fce7e5abc71a134947bcaa8793890041a1f26a2 /Documentation/mm
parent3649caed1c9b7aa57049620c498596c17fc7af9e (diff)
downloadlinux-3143a7bfd2a9852d63a2d88109cf5af49fcf4950.tar.xz
Docs/mm/damon/design: document DAMOS quota auto tuning
Document the DAMOS quota auto tuning feature on the design document. Link: https://lkml.kernel.org/r/20231130023652.50284-8-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Gow <davidgow@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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-rw-r--r--Documentation/mm/damon/design.rst11
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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