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6b349c3624
The readl/writel functions are inserting memory barrier to ensure that outstanding memory writes are completed, this results in L2 cache syncing being done on Tegra20 and Tegra30 which isn't a very cheap operation. Replace all readl/writel occurrences in the code with the relaxed versions since there is no need for the memory-access syncing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.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 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.