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authorChristoph Hellwig <hch@lst.de>2017-02-05 18:15:22 +0100
committerMichael S. Tsirkin <mst@redhat.com>2017-02-27 20:54:04 +0200
commitfb5e31d970ce8b4941f03ed765d7dbefc39f22d9 (patch)
treef7b64532549f35aad0933fae46346e59151d3a71 /drivers/net/caif/caif_virtio.c
parent52a61516125fa9a21b3bdf4f90928308e2e5573f (diff)
downloadop-kernel-dev-fb5e31d970ce8b4941f03ed765d7dbefc39f22d9.zip
op-kernel-dev-fb5e31d970ce8b4941f03ed765d7dbefc39f22d9.tar.gz
virtio: allow drivers to request IRQ affinity when creating VQs
Add a struct irq_affinity pointer to the find_vqs methods, which if set is used to tell the PCI layer to create the MSI-X vectors for our I/O virtqueues with the proper affinity from the start. Compared to after the fact affinity hints this gives us an instantly working setup and allows to allocate the irq descritors node-local and avoid interconnect traffic. Last but not least this will allow blk-mq queues are created based on the interrupt affinity for storage drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/net/caif/caif_virtio.c')
-rw-r--r--drivers/net/caif/caif_virtio.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/caif/caif_virtio.c b/drivers/net/caif/caif_virtio.c
index b306210..bc0eb47 100644
--- a/drivers/net/caif/caif_virtio.c
+++ b/drivers/net/caif/caif_virtio.c
@@ -679,7 +679,8 @@ static int cfv_probe(struct virtio_device *vdev)
goto err;
/* Get the TX virtio ring. This is a "guest side vring". */
- err = vdev->config->find_vqs(vdev, 1, &cfv->vq_tx, &vq_cbs, &names);
+ err = vdev->config->find_vqs(vdev, 1, &cfv->vq_tx, &vq_cbs, &names,
+ NULL);
if (err)
goto err;
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