[RFC PATCH v1.1 5/5] Docs/mm/damon/design: update for pgidle_set probe filter
From: SJ Park <sj@kernel.org>
Date: 2026-09-10 04:09:26
Also in:
damon, linux-doc, lkml
Subsystem:
damon, documentation, memory management - misc, the rest · Maintainers:
SJ Park, Jonathan Corbet, Andrew Morton, David Hildenbrand, Linus Torvalds
Update DAMON design document for the newly added pgidle_set probe filter type. Signed-off-by: SJ Park <sj@kernel.org> --- Documentation/mm/damon/design.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
index 8e980dde362de..cb116a82ff20b 100644
--- a/Documentation/mm/damon/design.rst
+++ b/Documentation/mm/damon/design.rst@@ -299,6 +299,7 @@ filter types. Currently below filter types are supported. - ``memcg``: Same to that for DAMOS filters. - ``pgidle_unset``: Matches if the page for the memory is marked as not access-idle. +- ``pgidle_set``: Matches if the page for the memory is marked as access-idle. If such probes are registered, DAMON executes the probes for each region's sampling memory when it does the access :ref:`sampling
@@ -314,7 +315,7 @@ actions are registered, DAMON applies the actions to each region's sampling memory before starting the next sampling interval. Currently only one action, ``set_pgidle`` is supported. The action marks the page for the probing target memory as access-idle. This can be useful to be used together with -``pgidle_unset`` probe filter. +``pgidle_unset`` or ``pgidle_set`` probe filter. This is a sampling based mechanism. Hence, it is lightweight but the output may include some measurement errors. The output should be used with good
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2.47.3