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For efficient and simple query-like DAMON monitoring results readings and deep level investigations of DAMOS, DAMON kernel API (include/linux/damon.h) users can use 'before_damos_apply' DAMON callback. However, DAMON sysfs interface users don't have such option. Add a directory, namely 'tried_regions', under each scheme directory to use it as the interface for the purpose. Note that this commit is implementing only the directory but the data filling. After the data filling change is made, users will be able to signal DAMON to fill the directory with the regions that corresponding scheme has tried to be applied. By setting the access pattern of the scheme, users could do the efficient query-like monitoring. Link: https://lkml.kernel.org/r/20221101220328.95765-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.