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7a32337119
Although the non-preemptible implementation of rcu_exp_handler() contains checks to enforce idempotency, the preemptible version does not. The reason for this omission is that in preemptible kernels, there is no reporting of quiescent states from CPU hotplug notifiers, and thus no need for idempotency. In theory, anyway. In practice, accidents happen. This commit therefore adds checks under WARN_ON_ONCE() to catch any such accidents. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> |
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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 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.