44b84ee7b4
Surface Serial Hub communication is, in its core, packet based. Each sequenced packet requires to be acknowledged, via an ACK-type control packet. In case invalid data has been received by the driver, a NAK-type (not-acknowledge/negative acknowledge) control packet is sent, triggering retransmission. Control packets are therefore a core communication primitive and used frequently enough (with every sequenced packet transmission sent by the embedded controller, including events and request responses) that it may warrant caching their allocations to reduce possible memory fragmentation. Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20201221183959.1186143-3-luzmaximilian@gmail.com Signed-off-by: Hans de Goede <hdegoede@redhat.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.