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Right now we are able to stop a queue but we have no indication if a transmission is ongoing or not. Thanks to recent additions, we can track the number of ongoing transmissions so we know if the last transmission is over. Adding on top of it an internal wait queue also allows to be woken up asynchronously when this happens. If, beforehands, we marked the queue to be held and stopped it, we end up flushing and stopping the tx queue. Thanks to this feature, we will soon be able to introduce a synchronous transmit API. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20220519150516.443078-9-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.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.