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Docs/mm/damon/design: categorize DAMOS filter types based on handling layer

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On what DAMON layer a DAMOS filter is handled is important to expect in
what order filters will be evaluated.  Re-organize the DAMOS filter types
list on the design doc to categorize types based on the handling layer, to
let users more easily understand the handling order.

Link: https://lkml.kernel.org/r/20250218223708.53437-6-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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SeongJae Park 2025-02-18 14:37:08 -08:00 committed by Andrew Morton
parent 4a4d8e7925
commit edab6ffd79
1 changed files with 15 additions and 19 deletions
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Documentation/mm/damon/design.rst
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@ -602,25 +602,21 @@ filters-checking overhead.
Below ``type`` of filters are currently supported. Below ``type`` of filters are currently supported.
- anon - Core layer handled
- Applied to pages that containing data that not stored in files. - addr
- Handled by operations set layer. Supported by only ``paddr`` set. - Applied to pages that belonging to a given address range.
- memcg - target
- Applied to pages that belonging to a given cgroup. - Applied to pages that belonging to a given DAMON monitoring target.
- Handled by operations set layer. Supported by only ``paddr`` set. - Operations layer handled, supported by only ``paddr`` operations set.
- young - anon
- Applied to pages that are accessed after the last access check from the - Applied to pages that containing data that not stored in files.
scheme. - memcg
- Handled by operations set layer. Supported by only ``paddr`` set. - Applied to pages that belonging to a given cgroup.
- hugepage_size - young
- Applied to pages that managed in a given size range. - Applied to pages that are accessed after the last access check from the
- Handled by operations set layer. Supported by only ``paddr`` set. scheme.
- addr - hugepage_size
- Applied to pages that belonging to a given address range. - Applied to pages that managed in a given size range.
- Handled by the core logic.
- target
- Applied to pages that belonging to a given DAMON monitoring target.
- Handled by the core logic.
To know how user-space can set the filters via :ref:`DAMON sysfs interface To know how user-space can set the filters via :ref:`DAMON sysfs interface
<sysfs_interface>`, refer to :ref:`filters <sysfs_filters>` part of the <sysfs_interface>`, refer to :ref:`filters <sysfs_filters>` part of the