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region->nr_accesses is the number of sampling intervals in the last aggregation interval that access to the region has found, and region->age is the number of aggregation intervals that its access pattern has maintained. Hence, the real meaning of the two fields' values is depending on current sampling and aggregation intervals. This means the values need to be updated for every sampling and/or aggregation intervals updates. As DAMON core doesn't, it is a duty of in-kernel DAMON framework applications like DAMON sysfs interface, or the userspace users. Handling it in userspace or in-kernel DAMON application is complicated, inefficient, and repetitive compared to doing the update in DAMON core. Do the update in DAMON core. Link: https://lkml.kernel.org/r/20230119013831.1911-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| README | ||
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.