On Wed, Feb 01, 2017 at 09:53:15AM -0800, Shaohua Li wrote:
> Next patch will use the API to get the node from vector for nvme device
>
> Signed-off-by: Shaohua Li <shli@xxxxxx>
Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Sorry I missed this; I normally work from the linux-pci patchwork, and
this didn't show up there because it wasn't cc'd to linux-pci. But I
should have noticed anyway.
> ---
> drivers/pci/msi.c | 16 ++++++++++++++++
> include/linux/pci.h | 6 ++++++
> 2 files changed, 22 insertions(+)
>
> diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
> index 50c5003..ab7aee7 100644
> --- a/drivers/pci/msi.c
> +++ b/drivers/pci/msi.c
> @@ -1313,6 +1313,22 @@ const struct cpumask *pci_irq_get_affinity(struct pci_dev *dev, int nr)
> }
> 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);
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index e2d1a12..df2c649 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -1334,6 +1334,7 @@ int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
> 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; }
> @@ -1384,6 +1385,11 @@ static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev,
> {
> return cpu_possible_mask;
> }
> +
> +static inline int pci_irq_get_node(struct pci_dev *pdev, int vec)
> +{
> + return first_online_node;
> +}
> #endif
>
> static inline int
> --
> 2.9.3
>
