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genirq/affinity: Handle pre/post vectors in irq_calc_affinity_vectors()

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Only calculate the affinity for the main I/O vectors, and skip the pre or
post vectors specified by struct irq_affinity.

Also remove the irq_affinity cpumask argument that has never been used.  If
we ever need it in the future we can pass it through struct irq_affinity.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Link: http://lkml.kernel.org/r/1478654107-7384-3-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Christoph Hellwig
2016-11-08 17:15:02 -08:00
committed by Thomas Gleixner
parent 20e407e195
commit 212bd84622
3 changed files with 16 additions and 20 deletions
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8
drivers/pci/msi.c
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@@ -1061,6 +1061,7 @@ EXPORT_SYMBOL(pci_msi_enabled);
static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
unsigned int flags)
{
static const struct irq_affinity default_affd;
bool affinity = flags & PCI_IRQ_AFFINITY;
int nvec;
int rc;
@@ -1091,8 +1092,7 @@ static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
for (;;) {
if (affinity) {
nvec = irq_calc_affinity_vectors(dev->irq_affinity,
nvec);
nvec = irq_calc_affinity_vectors(nvec, &default_affd);
if (nvec < minvec)
return -ENOSPC;
}
@@ -1132,6 +1132,7 @@ static int __pci_enable_msix_range(struct pci_dev *dev,
struct msix_entry *entries, int minvec, int maxvec,
unsigned int flags)
{
static const struct irq_affinity default_affd;
bool affinity = flags & PCI_IRQ_AFFINITY;
int rc, nvec = maxvec;
@@ -1140,8 +1141,7 @@ static int __pci_enable_msix_range(struct pci_dev *dev,
for (;;) {
if (affinity) {
nvec = irq_calc_affinity_vectors(dev->irq_affinity,
nvec);
nvec = irq_calc_affinity_vectors(nvec, &default_affd);
if (nvec < minvec)
return -ENOSPC;
}