diff options
| author | Thomas Gleixner | 2016-07-04 17:39:26 +0900 |
|---|---|---|
| committer | Thomas Gleixner | 2016-07-04 12:25:14 +0200 |
| commit | 0972fa57f53525ffa6ced12d703750fc2791e3ce (patch) | |
| tree | 3199a71c175f53ecb59271da64dcc769df8e6b9b | |
| parent | 45ddcecbfa947f1dd8e8019bad9e90d6c9f2665c (diff) | |
genirq/msi: Make use of affinity aware allocations
Allow the MSI code to provide affinity hints per MSI descriptor.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-block@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: axboe@fb.com
Cc: agordeev@redhat.com
Link: http://lkml.kernel.org/r/1467621574-8277-6-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/msi.h | 2 | ||||
| -rw-r--r-- | kernel/irq/msi.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index c33abfa0f5a7..4f0bfe5912b2 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -47,6 +47,7 @@ struct fsl_mc_msi_desc { * @nvec_used: The number of vectors used * @dev: Pointer to the device which uses this descriptor * @msg: The last set MSI message cached for reuse + * @affinity: Optional pointer to a cpu affinity mask for this descriptor * * @masked: [PCI MSI/X] Mask bits * @is_msix: [PCI MSI/X] True if MSI-X @@ -67,6 +68,7 @@ struct msi_desc { unsigned int nvec_used; struct device *dev; struct msi_msg msg; + const struct cpumask *affinity; union { /* PCI MSI/X specific data */ diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index 58dbbacc6fbb..0e2a736b14a7 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -335,7 +335,7 @@ int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev, virq = __irq_domain_alloc_irqs(domain, -1, desc->nvec_used, dev_to_node(dev), &arg, false, - NULL); + desc->affinity); if (virq < 0) { ret = -ENOSPC; if (ops->handle_error) |