| Message ID | 1500593634-4558-1-git-send-email-keith.busch@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Thu, Jul 20, 2017 at 07:33:53PM -0400, Keith Busch wrote: > The driver has a special purpose for the vmd device's first, so this > one shouldn't be considered for irq affinity. > > Signed-off-by: Keith Busch <keith.busch@intel.com> Applied both to pci/host-vmd for v4.14, thanks! > --- > drivers/pci/host/vmd.c | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-) > > diff --git a/drivers/pci/host/vmd.c b/drivers/pci/host/vmd.c > index e27ad2a..8cddf30 100644 > --- a/drivers/pci/host/vmd.c > +++ b/drivers/pci/host/vmd.c > @@ -662,6 +662,14 @@ static int vmd_probe(struct pci_dev *dev, const struct pci_device_id *id) > struct vmd_dev *vmd; > int i, err; > > + /* > + * The first vector is reserved for special use, so start affinity at > + * the second vector > + */ > + struct irq_affinity affd = { > + .pre_vectors = 1, > + }; > + > if (resource_size(&dev->resource[VMD_CFGBAR]) < (1 << 20)) > return -ENOMEM; > > @@ -687,8 +695,8 @@ static int vmd_probe(struct pci_dev *dev, const struct pci_device_id *id) > if (vmd->msix_count < 0) > return -ENODEV; > > - vmd->msix_count = pci_alloc_irq_vectors(dev, 1, vmd->msix_count, > - PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); > + vmd->msix_count = pci_alloc_irq_vectors_affinity(dev, 1, vmd->msix_count, > + PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &affd); > if (vmd->msix_count < 0) > return vmd->msix_count; > > -- > 2.5.5 >
diff --git a/drivers/pci/host/vmd.c b/drivers/pci/host/vmd.c index e27ad2a..8cddf30 100644 --- a/drivers/pci/host/vmd.c +++ b/drivers/pci/host/vmd.c @@ -662,6 +662,14 @@ static int vmd_probe(struct pci_dev *dev, const struct pci_device_id *id) struct vmd_dev *vmd; int i, err; + /* + * The first vector is reserved for special use, so start affinity at + * the second vector + */ + struct irq_affinity affd = { + .pre_vectors = 1, + }; + if (resource_size(&dev->resource[VMD_CFGBAR]) < (1 << 20)) return -ENOMEM; @@ -687,8 +695,8 @@ static int vmd_probe(struct pci_dev *dev, const struct pci_device_id *id) if (vmd->msix_count < 0) return -ENODEV; - vmd->msix_count = pci_alloc_irq_vectors(dev, 1, vmd->msix_count, - PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); + vmd->msix_count = pci_alloc_irq_vectors_affinity(dev, 1, vmd->msix_count, + PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &affd); if (vmd->msix_count < 0) return vmd->msix_count;
The driver has a special purpose for the vmd device's first, so this one shouldn't be considered for irq affinity. Signed-off-by: Keith Busch <keith.busch@intel.com> --- drivers/pci/host/vmd.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)