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The function upstream_bridge_distance() has evolved such that its name is no longer entirely reflective of what the function does. It not only calculates the distance between two peers but also calculates how the DMA addresses for those two peers should be mapped. Rename it to calc_map_type_and_dist() and rework the documentation to better describe the two pieces of information the function returns. [bhelgaas: tweak comment wording] Link: https://lore.kernel.org/r/20210610160609.28447-2-logang@deltatee.com Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.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.