diff options
| author | SeongJae Park | 2022-01-14 14:10:08 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2022-01-15 16:30:32 +0200 |
| commit | 4492bf452af532493b6591d2e090a0f8f7c11674 (patch) | |
| tree | 8c3d3fd71980ba5896886f9e9f5a6f96ef314b52 /Documentation | |
| parent | 35b43d4092008ad33d3bcccee4b262ffbf8a551c (diff) | |
Docs/admin-guide/mm/damon/usage: mention tracepoint at the beginning
To get detailed monitoring results from the user space, users need to
use the damon_aggregated tracepoint. This commit adds a brief mention
of it at the beginning of the usage document.
Link: https://lkml.kernel.org/r/20211209131806.19317-5-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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/mm/damon/usage.rst | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst index 24137312f601..846c85bf4b9d 100644 --- a/Documentation/admin-guide/mm/damon/usage.rst +++ b/Documentation/admin-guide/mm/damon/usage.rst @@ -21,7 +21,10 @@ DAMON provides below three interfaces for different users. you can write and use your personalized DAMON debugfs wrapper programs that reads/writes the debugfs files instead of you. The `DAMON user space tool <https://github.com/awslabs/damo>`_ is one example of such programs. It - supports both virtual and physical address spaces monitoring. + supports both virtual and physical address spaces monitoring. Note that this + interface provides only simple :ref:`statistics <damos_stats>` for the + monitoring results. For detailed monitoring results, DAMON provides a + :ref:`tracepoint <tracepoint>`. - *Kernel Space Programming Interface.* :doc:`This </vm/damon/api>` is for kernel space programmers. Using this, users can utilize every feature of DAMON most flexibly and efficiently by @@ -215,6 +218,8 @@ If the value is higher than ``<high mark>`` or lower than ``<low mark>``, the scheme is deactivated. If the value is lower than ``<mid mark>``, the scheme is activated. +.. _damos_stats: + Statistics ~~~~~~~~~~ @@ -268,6 +273,8 @@ the monitoring is turned on. If you write to the files while DAMON is running, an error code such as ``-EBUSY`` will be returned. +.. _tracepoint: + Tracepoint for Monitoring Results ================================= |