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Florian Fainelli
9eda7c1f6f
Brahma-B53 and Cortex-A72 CPUs integrated on Broadcom STB SoCs feature a read-ahead cache that performs cache line size adaptation between the bus interface unit and the memory controller. On 32-bit ARM kernels we have to resort to a full featured read-ahead cache driver under arch/arm/mm/cache-b15-rac.c (CONFIG_CACHE_B15_RAC) because there are still cache maintenance operations by set/ways/index that cannot be transparently handled by the ARM Coherency Extension that the read-ahead cache interfaces to. The 64-bit ARM kernel however has long deprecated all of those, so this is simply a one time configuration. Signed-off-by: Florian Fainelli <f.fainelli@gmail.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 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.