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| author | SeongJae Park <sj@kernel.org> | 2022-05-09 18:20:52 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-05-13 07:20:06 -0700 |
| commit | 915418088c977993933efaf7a704c0bcd6c2bf77 (patch) | |
| tree | a625cfc10575eb2a2a79f1ca7ff17ae073329dba /Documentation/admin-guide/mm | |
| parent | b82434471cd2164988f8b4436983338ef224431d (diff) | |
| download | linux-stable-915418088c977993933efaf7a704c0bcd6c2bf77.tar.gz linux-stable-915418088c977993933efaf7a704c0bcd6c2bf77.tar.bz2 linux-stable-915418088c977993933efaf7a704c0bcd6c2bf77.zip | |
Docs/{ABI,admin-guide}/damon: update for fixed virtual address ranges monitoring
This commit documents the user space support of the newly added monitoring
operations set for fixed virtual address ranges monitoring, namely
'fvaddr', on the ABI and usage documents for DAMON.
Link: https://lkml.kernel.org/r/20220426231750.48822-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide/mm')
| -rw-r--r-- | Documentation/admin-guide/mm/damon/usage.rst | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst index af6ffaea567b..9c67311a79d8 100644 --- a/Documentation/admin-guide/mm/damon/usage.rst +++ b/Documentation/admin-guide/mm/damon/usage.rst @@ -154,8 +154,13 @@ available monitoring operations set on the currently running kernel by reading list some or all of below keywords. - vaddr: Monitor virtual address spaces of specific processes + - fvaddr: Monitor fixed virtual address ranges - paddr: Monitor the physical address space of the system +Please refer to :ref:`regions sysfs directory <sysfs_regions>` for detailed +differences between the operations sets in terms of the monitoring target +regions. + You can set and get what type of monitoring operations DAMON will use for the context by writing one of the keywords listed in ``avail_operations`` file and reading from the ``operations`` file. @@ -198,6 +203,8 @@ If you wrote ``vaddr`` to the ``contexts/<N>/operations``, each target should be a process. You can specify the process to DAMON by writing the pid of the process to the ``pid_target`` file. +.. _sysfs_regions: + targets/<N>/regions ------------------- @@ -208,9 +215,10 @@ can be covered. However, users could want to set the initial monitoring region to specific address ranges. In contrast, DAMON do not automatically sets and updates the monitoring target -regions when ``paddr`` monitoring operations set is being used (``paddr`` is -written to the ``contexts/<N>/operations``). Therefore, users should set the -monitoring target regions by themselves in the case. +regions when ``fvaddr`` or ``paddr`` monitoring operations sets are being used +(``fvaddr`` or ``paddr`` have written to the ``contexts/<N>/operations``). +Therefore, users should set the monitoring target regions by themselves in the +cases. For such cases, users can explicitly set the initial monitoring target regions as they want, by writing proper values to the files under this directory. |