Docs/admin-guide/mm/damon/usage: update the ways for getting monitoring results

The recommended ways for getting DAMON monitoring results are using
tried_regions sysfs directory for partial snapshot of the results, and
DAMON tracepoint for full record of the results. However, the
tried_regions sysfs directory usage has not sufficiently updated on some
sections of the DAMON usage document. Update those.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: SeongJae Park <[e-mail]>
Cc: Jonathan Corbet <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

Documentation/admin-guide/mm/damon/usage.rst

···
   features by reading from and writing to special sysfs files.  Therefore,
   you can write and use your personalized DAMON sysfs wrapper programs that
   reads/writes the sysfs files instead of you.  The `DAMON user space tool
-  <https://github.com/awslabs/damo>`_ is one example of such programs.  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>`.
+  <https://github.com/awslabs/damo>`_ is one example of such programs.
 - *debugfs interface. (DEPRECATED!)*
   :ref:`This <debugfs_interface>` is almost identical to :ref:`sysfs interface
   <sysfs_interface>`.  This is deprecated, so users should move to the
···
 ``clear_schemes_tried_regions``, is written to the relevant
 ``kdamonds/<N>/state`` file.
 
+The expected usage of this directory is investigations of schemes' behaviors,
+and query-like efficient data access monitoring results retrievals.  For the
+latter use case, in particular, users can set the ``action`` as ``stat`` and
+set the ``access pattern`` as their interested pattern that they want to query.
+
 tried_regions/<N>/
 ------------------
 
···
 Tracepoint for Monitoring Results
 =================================
 
-DAMON provides the monitoring results via a tracepoint,
-``damon:damon_aggregated``.  While the monitoring is turned on, you could
-record the tracepoint events and show results using tracepoint supporting tools
-like ``perf``.  For example::
+Users can get the monitoring results via the :ref:`tried_regions
+<sysfs_schemes_tried_regions>` or a tracepoint, ``damon:damon_aggregated``.
+While the tried regions directory is useful for getting a snapshot, the
+tracepoint is useful for getting a full record of the results.  While the
+monitoring is turned on, you could record the tracepoint events and show
+results using tracepoint supporting tools like ``perf``.  For example::
 
     # echo on > monitor_on
     # perf record -e damon:damon_aggregated &