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| author | Thomas Gleixner <tglx@linutronix.de> | 2016-09-14 16:18:51 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-14 22:11:10 +0200 |
| commit | ee8d41e53efe14bfc5ea5866e1178b06d78a7c95 (patch) | |
| tree | 49bd07263483c2d6c43febb7f0668d53110d3b8e /include/linux/pci.h | |
| parent | 44082fd6702fb12020967fd375f8bf6dd7c111bf (diff) | |
| download | linux-ee8d41e53efe14bfc5ea5866e1178b06d78a7c95.tar.gz linux-ee8d41e53efe14bfc5ea5866e1178b06d78a7c95.tar.xz | |
pci/msi: Retrieve affinity for a vector
Add a helper to get the affinity mask for a given PCI irq vector. For MSI or
MSI-X vectors these are stored by the IRQ core, while for legacy interrupts
we will always return cpu_possible_map.
[hch: updated to follow the style of pci_irq_vector()]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Link: http://lkml.kernel.org/r/1473862739-15032-6-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 0ab835965669..3b0a8004f313 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1300,6 +1300,7 @@ int pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs, unsigned int max_vecs, unsigned int flags); 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); #else static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; } @@ -1342,6 +1343,11 @@ static inline int pci_irq_vector(struct pci_dev *dev, unsigned int nr) return -EINVAL; return dev->irq; } +static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, + int vec) +{ + return cpu_possible_mask; +} #endif #ifdef CONFIG_PCIEPORTBUS |