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55911a9f42
RCU stall printout fetches the EQS state of a CPU with a preceding full memory barrier. However there is nothing to order this read against at this debugging stage. It is inherently racy when performed remotely. Do a plain read instead. This was the last user of rcu_dynticks_snap(). Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.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 reStructuredText 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.