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author | SeongJae Park <sj@kernel.org> | 2023-05-25 21:43:09 +0000 |
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committer | Andrew Morton <akpm@linux-foundation.org> | 2023-06-09 16:25:47 -0700 |
commit | 69e7b88cea29f10bb8707f4056cba1e2d04cb894 (patch) | |
tree | 11cdeb11b94c28d1914a77ed25a4bb3748bf8e02 /Documentation | |
parent | e168962dbf7f0a6aba26174b3b09d0c313c6f7f5 (diff) | |
download | lwn-69e7b88cea29f10bb8707f4056cba1e2d04cb894.tar.gz lwn-69e7b88cea29f10bb8707f4056cba1e2d04cb894.zip |
Docs/mm/damon/design: rewrite configurable layers
The 'Configurable Operations Set' section is a little bit outdated.
Update the text.
Link: https://lkml.kernel.org/r/20230525214314.5204-6-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>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/mm/damon/design.rst | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst index eaf52f3a9144..4a22bab124cf 100644 --- a/Documentation/mm/damon/design.rst +++ b/Documentation/mm/damon/design.rst @@ -22,24 +22,23 @@ DAMON subsystem is configured with three layers including Configurable Operations Set --------------------------- -DAMON provides data access monitoring functionality while making the accuracy -and the overhead controllable. The fundamental access monitorings require -primitives that dependent on and optimized for the target address space. On -the other hand, the accuracy and overhead tradeoff mechanism, which is the core -of DAMON, is in the pure logic space. DAMON separates the two parts in -different layers and defines its interface to allow various low level -primitives implementations configurable with the core logic. We call the low -level primitives implementations monitoring operations. - -Due to this separated design and the configurable interface, users can extend -DAMON for any address space by configuring the core logics with appropriate -monitoring operations. If appropriate one is not provided, users can implement -the operations on their own. +For data access monitoring and additional low level work, DAMON needs a set of +implementations for specific operations that are dependent on and optimized for +the given target address space. On the other hand, the accuracy and overhead +tradeoff mechanism, which is the core logic of DAMON, is in the pure logic +space. DAMON separates the two parts in different layers, namely DAMON +Operations Set and DAMON Core Logics Layers, respectively. It further defines +the interface between the layers to allow various operations sets to be +configured with the core logic. + +Due to this design, users can extend DAMON for any address space by configuring +the core logic to use the appropriate operations set. If any appropriate set +is unavailable, users can implement one on their own. For example, physical memory, virtual memory, swap space, those for specific processes, NUMA nodes, files, and backing memory devices would be supportable. -Also, if some architectures or devices support special optimized access check -primitives, those will be easily configurable. +Also, if some architectures or devices supporting special optimized access +check primitives, those will be easily configurable. Operations Set Layer |