011670cc34
Currently driver can only allocate interrupt vectors during init phase by calling pci_alloc_irq_vectors. Change that and make use of new pci_msix_alloc_irq_at/pci_msix_free_irq API and enable to allocate and free more interrupts after MSIX has been enabled. Since not all platforms supports dynamic allocation, check it with pci_msix_can_alloc_dyn. Extend the tracker to keep track how many interrupts are allocated initially so when all such vectors are already used, additional interrupts are automatically allocated dynamically. Remember each interrupt allocation method to then free appropriately. Since some features may require interrupts allocated dynamically add appropriate VSI flag and take it into account when allocating new interrupt. Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel) Signed-off-by: Piotr Raczynski <piotr.raczynski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.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.