diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-02-05 20:15:22 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-02-27 21:54:04 +0300 |
| commit | fb5e31d970ce8b4941f03ed765d7dbefc39f22d9 (patch) | |
| tree | f7b64532549f35aad0933fae46346e59151d3a71 /drivers/remoteproc | |
| parent | 52a61516125fa9a21b3bdf4f90928308e2e5573f (diff) | |
| download | linux-fb5e31d970ce8b4941f03ed765d7dbefc39f22d9.tar.xz | |
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/remoteproc')
| -rw-r--r-- | drivers/remoteproc/remoteproc_virtio.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c index 364411fb7734..0142cc3f0c91 100644 --- a/drivers/remoteproc/remoteproc_virtio.c +++ b/drivers/remoteproc/remoteproc_virtio.c @@ -137,7 +137,8 @@ static void rproc_virtio_del_vqs(struct virtio_device *vdev) static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned int nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[]) + const char * const names[], + struct irq_affinity *desc) { int i, ret; |