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The rcu_torture_reader() and rcu_torture_fwd_prog_cr() functions run CPU-bound for extended periods of time (tens or even hundreds of milliseconds), so they invoke tick_dep_set_task() and tick_dep_clear_task() to ensure that the scheduling-clock tick helps move grace periods forward. So why doesn't rcu_torture_fwd_prog_nr() also invoke tick_dep_set_task() and tick_dep_clear_task()? Because the point of this function is to test RCU's ability to (eventually) force grace periods forward even when the tick has been disabled during long CPU-bound kernel execution. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Joel Fernandes <joelagnelf@nvidia.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 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.