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7ecc6aa522
The documentation of rw_semaphores is wrong as it claims that the non-owner reader release is not supported by RT. That's just history biased memory distortion. Split the 'Owner semantics' section up and add separate sections for semaphore and rw_semaphore to reflect reality. Aside of that the following updates are done: - Add pseudo code to document the spinlock state preserving mechanism on PREEMPT_RT - Wordsmith the bitspinlock and lock nesting sections Co-developed-by: Paul McKenney <paulmck@kernel.org> Signed-off-by: Paul McKenney <paulmck@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lkml.kernel.org/r/87wo78y5yy.fsf@nanos.tec.linutronix.de
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.