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Add those four test cases: 1. X --(ER)--> Y --(ER)--> Z --(ER)--> X is deadlock. 2. X --(EN)--> Y --(SR)--> Z --(ER)--> X is deadlock. 3. X --(EN)--> Y --(SR)--> Z --(SN)--> X is not deadlock. 4. X --(ER)--> Y --(SR)--> Z --(EN)--> X is not deadlock. Those self testcases are valuable for the development of supporting recursive read related deadlock detection. Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200807074238.1632519-17-boqun.feng@gmail.com
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.