diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-02-05 18:15:22 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-02-27 19:54:04 +0100 |
| commit | fb5e31d970ce8b4941f03ed765d7dbefc39f22d9 (patch) | |
| tree | f7b64532549f35aad0933fae46346e59151d3a71 /drivers/misc/mic | |
| parent | virtio_pci: simplify MSI-X setup (diff) | |
| download | linux-fb5e31d970ce8b4941f03ed765d7dbefc39f22d9.tar.xz linux-fb5e31d970ce8b4941f03ed765d7dbefc39f22d9.zip | |
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/misc/mic')
| -rw-r--r-- | drivers/misc/mic/vop/vop_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/mic/vop/vop_main.c b/drivers/misc/mic/vop/vop_main.c index 1a2b67f3183d..c2e29d7f0de8 100644 --- a/drivers/misc/mic/vop/vop_main.c +++ b/drivers/misc/mic/vop/vop_main.c @@ -374,7 +374,7 @@ unmap: static int vop_find_vqs(struct virtio_device *dev, unsigned nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[]) + const char * const names[], struct irq_affinity *desc) { struct _vop_vdev *vdev = to_vopvdev(dev); struct vop_device *vpdev = vdev->vpdev; |