• C
    PCI: Spread interrupt vectors in pci_alloc_irq_vectors() · 4ef33685
    Christoph Hellwig 提交于
    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: NChristoph Hellwig <hch@lst.de>
    Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
    Reviewed-by: NAlexander Gordeev <agordeev@redhat.com>
    4ef33685
pci.h 72.3 KB