PCI: hookup irq_get_affinity callback

struct bus_type has a new callback for retrieving the IRQ affinity for a
device. Hook this callback up for PCI based devices.

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Daniel Wagner <wagi@kernel.org>
Link: https://lore.kernel.org/r/20241202-refactor-blk-affinity-helpers-v6-2-27211e9c2cd5@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 35270172c833186995aebdda6f95ab3ffd7c67a0..f57ea36d125d6eecfb60a6dc84d189cf9ed9b423 100644 (file)
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -1670,6 +1670,19 @@ static void pci_dma_cleanup(struct device *dev)
                iommu_device_unuse_default_domain(dev);
 }
 
+/*
+ * pci_device_irq_get_affinity - get IRQ affinity mask for device
+ * @dev: ptr to dev structure
+ * @irq_vec: interrupt vector number
+ *
+ * Return the CPU affinity mask for @dev and @irq_vec.
+ */
+static const struct cpumask *pci_device_irq_get_affinity(struct device *dev,
+                                       unsigned int irq_vec)
+{
+       return pci_irq_get_affinity(to_pci_dev(dev), irq_vec);
+}
+
 const struct bus_type pci_bus_type = {
        .name           = "pci",
        .match          = pci_bus_match,
@@ -1677,6 +1690,7 @@ const struct bus_type pci_bus_type = {
        .probe          = pci_device_probe,
        .remove         = pci_device_remove,
        .shutdown       = pci_device_shutdown,
+       .irq_get_affinity = pci_device_irq_get_affinity,
        .dev_groups     = pci_dev_groups,
        .bus_groups     = pci_bus_groups,
        .drv_groups     = pci_drv_groups,