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6f948568fd
In the synchronize_rcu() common case, we will have less than SR_MAX_USERS_WAKE_FROM_GP number of users per GP. Waking up the kworker is pointless just to free the last injected wait head since at that point, all the users have already been awakened. Introduce a new counter to track this and prevent the wakeup in the common case. [ paulmck: Remove atomic_dec_return_release in cannot-happen state. ] Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@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.