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authorChristoph Hellwig <hch@lst.de>2016-11-09 04:15:02 +0300
committerThomas Gleixner <tglx@linutronix.de>2016-11-09 10:25:08 +0300
commit212bd846223c718b6577d4df16fd8d05a55ad914 (patch)
tree3dec4e4929b02753ffba2018ea8849eb8cd29f11 /drivers/pci/msi.c
parent20e407e195b29a4f5a18d713a61f54a75f992bd5 (diff)
downloadlinux-212bd846223c718b6577d4df16fd8d05a55ad914.tar.xz
genirq/affinity: Handle pre/post vectors in irq_calc_affinity_vectors()
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>
Diffstat (limited to 'drivers/pci/msi.c')
-rw-r--r--drivers/pci/msi.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index ad70507cfb56..dad2da7cf80e 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -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;
}