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virtio: Make vp_set_vq_affinity() take a mask.

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Make vp_set_vq_affinity() take a cpumask instead of taking a single CPU.

If there are fewer queues than cores, queue affinity should be able to
map to multiple cores.

Link: https://patchwork.ozlabs.org/patch/948149/
Suggested-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Caleb Raitto <caraitto@google.com>
Acked-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Caleb Raitto
2018-08-09 18:18:28 -07:00
committed by David S. Miller
parent 07624df1c9
commit 19e226e8cc
5 changed files with 14 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
include/linux/virtio_config.h
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@@ -79,7 +79,8 @@ struct virtio_config_ops {
u64 (*get_features)(struct virtio_device *vdev);
int (*finalize_features)(struct virtio_device *vdev);
const char *(*bus_name)(struct virtio_device *vdev);
int (*set_vq_affinity)(struct virtqueue *vq, int cpu);
int (*set_vq_affinity)(struct virtqueue *vq,
const struct cpumask *cpu_mask);
const struct cpumask *(*get_vq_affinity)(struct virtio_device *vdev,
int index);
};
@@ -236,11 +237,11 @@ const char *virtio_bus_name(struct virtio_device *vdev)
*
*/
static inline
int virtqueue_set_affinity(struct virtqueue *vq, int cpu)
int virtqueue_set_affinity(struct virtqueue *vq, const struct cpumask *cpu_mask)
{
struct virtio_device *vdev = vq->vdev;
if (vdev->config->set_vq_affinity)
return vdev->config->set_vq_affinity(vq, cpu);
return vdev->config->set_vq_affinity(vq, cpu_mask);
return 0;
}