[v4,03/10] PCI: hookup irq_get_affinity callback

Commit Message

Daniel Wagner Nov. 13, 2024, 2:26 p.m. UTC

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 <[e-mail]>
Reviewed-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Hannes Reinecke <[e-mail]>
Signed-off-by: Daniel Wagner <[e-mail]>
---
 drivers/pci/pci-driver.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

Comments

Ming Lei Nov. 14, 2024, 1:53 a.m. UTC | #1

On Wed, Nov 13, 2024 at 03:26:17PM +0100, Daniel Wagner wrote:
> 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 <[e-mail]>
> Reviewed-by: Christoph Hellwig <[e-mail]>
> Reviewed-by: Hannes Reinecke <[e-mail]>
> Signed-off-by: Daniel Wagner <[e-mail]>

Reviewed-by: Ming Lei <[e-mail]>

Patch

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 35270172c833186995aebdda6f95ab3ffd7c67a0..a9cb0e3ad2e6eca58c34683303b1242228e96909 100644
--- 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,