[PATCH 5/7] Docs/mm/damon/design: document 'young page' type DAMOS filter

SeongJae Park
2024-04-26T19:53:03Z

Update DAMON design document for the newly added DAMOS filter type,
'young page'.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
Documentation/mm/damon/design.rst | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
index 5620aab9b3850..f2baf617184d0 100644
--- a/Documentation/mm/damon/design.rst
+++ b/Documentation/mm/damon/design.rst
@@ -461,15 +461,17 @@ number of filters for each scheme. Each filter specifies the type of target
memory, and whether it should exclude the memory of the type (filter-out), or
all except the memory of the type (filter-in).

-Currently, anonymous page, memory cgroup, address range, and DAMON monitoring
-target type filters are supported by the feature. Some filter target types
-require additional arguments. The memory cgroup filter type asks users to
-specify the file path of the memory cgroup for the filter. The address range
-type asks the start and end addresses of the range. The DAMON monitoring
-target type asks the index of the target from the context's monitoring targets
-list. Hence, users can apply specific schemes to only anonymous pages,
-non-anonymous pages, pages of specific cgroups, all pages excluding those of
-specific cgroups, pages in specific address range, pages in specific DAMON
+Currently, anonymous page, memory cgroup, young page, address range, and DAMON
+monitoring target type filters are supported by the feature. Some filter
+target types require additional arguments. The memory cgroup filter type asks
+users to specify the file path of the memory cgroup for the filter. The
+address range type asks the start and end addresses of the range. The DAMON
+monitoring target type asks the index of the target from the context's
+monitoring targets list. Hence, users can apply specific schemes to only
+anonymous pages, non-anonymous pages, pages of specific cgroups, all pages
+excluding those of specific cgroups, pages that not accessed after the last
+access check from the scheme, pages that accessed after the last access check
+from the scheme, pages in specific address range, pages in specific DAMON
monitoring targets, and any combination of those.

To handle filters efficiently, the address range and DAMON monitoring target
--
2.39.2