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a0c60b0790
Currently, queues are associated 1:1 with interrupt vectors as it's assumed queues are always interrupt-driven. For XDP, we want to use Tx queues without interrupts and only do "lazy" cleaning when the number of free elements is <= threshold (closest pow-2 to 1/4 of the ring). In order to use a queue without an interrupt, idpf still needs to have a vector assigned to it to flush descriptors. This vector can be global and only one for the whole vport to handle all its noirq queues. Always request one excessive vector and configure it in non-interrupt mode right away when creating vport, so that it can be used later by queues when needed (not only XDP ones). Co-developed-by: Michal Kubiak <michal.kubiak@intel.com> Signed-off-by: Michal Kubiak <michal.kubiak@intel.com> Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Tested-by: Ramu R <ramu.r@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> |
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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 reStructuredText 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.