Christoph Hellwig 4ef33685aa
PCI: Spread interrupt vectors in pci_alloc_irq_vectors() ...
Set the affinity_mask in the PCI device before allocating vectors so that
the affinity can be propagated through the MSI descriptor structures to the
core IRQ code. To facilitate this, new __pci_enable_msi_range() and
__pci_enable_msix_range() helpers are factored out of their not prefixed
variants which assigning the new IRQ affinity mask in the PCI device so
that the low-level interrupt code can perform the interrupt affinity
assignment and do node-local allocations.
A new PCI_IRQ_NOAFFINITY flag is added to pci_alloc_irq_vectors() so that
this function can also be used by drivers that don't wish to use the
automatic affinity assignment.
[bhelgaas: omit "else" after "return" consistently]
Signed-off-by: Christoph Hellwig <hch@lst.de >
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com >
Reviewed-by: Alexander Gordeev <agordeev@redhat.com >
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4ef33685aa