Next patch will use the API to get the node from vector for nvme device
Signed-off-by: Shaohua Li <shli@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
}
EXPORT_SYMBOL(pci_irq_get_affinity);
}
EXPORT_SYMBOL(pci_irq_get_affinity);
+/**
+ * pci_irq_get_node - return the numa node of a particular msi vector
+ * @pdev: PCI device to operate on
+ * @vec: device-relative interrupt vector index (0-based).
+ */
+int pci_irq_get_node(struct pci_dev *pdev, int vec)
+{
+ const struct cpumask *mask;
+
+ mask = pci_irq_get_affinity(pdev, vec);
+ if (mask)
+ return local_memory_node(cpu_to_node(cpumask_first(mask)));
+ return dev_to_node(&pdev->dev);
+}
+EXPORT_SYMBOL(pci_irq_get_node);
+
struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc)
{
return to_pci_dev(desc->dev);
struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc)
{
return to_pci_dev(desc->dev);
void pci_free_irq_vectors(struct pci_dev *dev);
int pci_irq_vector(struct pci_dev *dev, unsigned int nr);
const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec);
void pci_free_irq_vectors(struct pci_dev *dev);
int pci_irq_vector(struct pci_dev *dev, unsigned int nr);
const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec);
+int pci_irq_get_node(struct pci_dev *pdev, int vec);
#else
static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
#else
static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
{
return cpu_possible_mask;
}
{
return cpu_possible_mask;
}
+
+static inline int pci_irq_get_node(struct pci_dev *pdev, int vec)
+{
+ return first_online_node;
+}