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

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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: Bjorn Helgaas <bhelgaas@google.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/1478654107-7384-4-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Christoph Hellwig
2016-11-08 17:15:03 -08:00
committed by Thomas Gleixner
parent 212bd84622
commit 67c93c218d
3 changed files with 31 additions and 25 deletions
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6
drivers/pci/msi.c
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@@ -553,12 +553,13 @@ error_attrs:
static struct msi_desc *
msi_setup_entry(struct pci_dev *dev, int nvec, bool affinity)
{
static const struct irq_affinity default_affd;
struct cpumask *masks = NULL;
struct msi_desc *entry;
u16 control;
if (affinity) {
masks = irq_create_affinity_masks(dev->irq_affinity, nvec);
masks = irq_create_affinity_masks(nvec, &default_affd);
if (!masks)
pr_err("Unable to allocate affinity masks, ignoring\n");
}
@@ -692,12 +693,13 @@ static int msix_setup_entries(struct pci_dev *dev, void __iomem *base,
struct msix_entry *entries, int nvec,
bool affinity)
{
static const struct irq_affinity default_affd;
struct cpumask *curmsk, *masks = NULL;
struct msi_desc *entry;
int ret, i;
if (affinity) {
masks = irq_create_affinity_masks(dev->irq_affinity, nvec);
masks = irq_create_affinity_masks(nvec, &default_affd);
if (!masks)
pr_err("Unable to allocate affinity masks, ignoring\n");
}