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authorThomas Gleixner <tglx@linutronix.de>2016-09-14 16:18:47 +0200
committerThomas Gleixner <tglx@linutronix.de>2016-09-14 22:11:08 +0200
commit28f4b04143c56135b1ca742fc64b664ed04de6a4 (patch)
tree540f709075a896497ea19a6ba40fa8c516653db0 /drivers/pci/msi.c
parent9395452b4aab7bc2475ef8935b4a4fb99d778d70 (diff)
downloadlinux-28f4b04143c56135b1ca742fc64b664ed04de6a4.tar.bz2
genirq/msi: Add cpumask allocation to alloc_msi_entry
For irq spreading want to store affinity masks in the msi_entry. Add the infrastructure for it. We allocate an array of cpumasks with an array size of the number of used vectors in the entry, so we can hand in the information per linux interrupt later. As we hand in the number of used vectors, we assign them right away. Convert all the call sites. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: axboe@fb.com Cc: keith.busch@intel.com Cc: agordeev@redhat.com Cc: linux-block@vger.kernel.org Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/1473862739-15032-2-git-send-email-hch@lst.de
Diffstat (limited to 'drivers/pci/msi.c')
-rw-r--r--drivers/pci/msi.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 98f12223c734..0db72ba24003 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -555,7 +555,7 @@ static struct msi_desc *msi_setup_entry(struct pci_dev *dev, int nvec)
struct msi_desc *entry;
/* MSI Entry Initialization */
- entry = alloc_msi_entry(&dev->dev);
+ entry = alloc_msi_entry(&dev->dev, nvec, NULL);
if (!entry)
return NULL;
@@ -568,7 +568,6 @@ static struct msi_desc *msi_setup_entry(struct pci_dev *dev, int nvec)
entry->msi_attrib.default_irq = dev->irq; /* Save IOAPIC IRQ */
entry->msi_attrib.multi_cap = (control & PCI_MSI_FLAGS_QMASK) >> 1;
entry->msi_attrib.multiple = ilog2(__roundup_pow_of_two(nvec));
- entry->nvec_used = nvec;
entry->affinity = dev->irq_affinity;
if (control & PCI_MSI_FLAGS_64BIT)
@@ -693,7 +692,7 @@ static int msix_setup_entries(struct pci_dev *dev, void __iomem *base,
mask = cpumask_of(cpu);
}
- entry = alloc_msi_entry(&dev->dev);
+ entry = alloc_msi_entry(&dev->dev, 1, NULL);
if (!entry) {
if (!i)
iounmap(base);
@@ -711,7 +710,6 @@ static int msix_setup_entries(struct pci_dev *dev, void __iomem *base,
entry->msi_attrib.entry_nr = i;
entry->msi_attrib.default_irq = dev->irq;
entry->mask_base = base;
- entry->nvec_used = 1;
entry->affinity = mask;
list_add_tail(&entry->list, dev_to_msi_list(&dev->dev));