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| author | Xie Yongji <xieyongji@bytedance.com> | 2023-03-23 13:30:34 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-04-21 03:02:31 -0400 |
| commit | 1d24692732fb299c94b0dcc032b48ac8fa85c854 (patch) | |
| tree | a63c503a3ebd6894904ae6ece4794ad95b716df1 | |
| parent | aaf0594829c3a6f16bdf5d30904a7db4548dae15 (diff) | |
| download | linux-stable-1d24692732fb299c94b0dcc032b48ac8fa85c854.tar.gz linux-stable-1d24692732fb299c94b0dcc032b48ac8fa85c854.tar.bz2 linux-stable-1d24692732fb299c94b0dcc032b48ac8fa85c854.zip | |
vdpa: Add set/get_vq_affinity callbacks in vdpa_config_ops
This introduces set/get_vq_affinity callbacks in
vdpa_config_ops to support virtqueue affinity
management for vdpa device drivers.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230323053043.35-3-xieyongji@bytedance.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | drivers/virtio/virtio_vdpa.c | 28 | ||||
| -rw-r--r-- | include/linux/vdpa.h | 13 |
2 files changed, 41 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c index d7f5af62ddaa..f72696b4c1c2 100644 --- a/drivers/virtio/virtio_vdpa.c +++ b/drivers/virtio/virtio_vdpa.c @@ -337,6 +337,32 @@ static const char *virtio_vdpa_bus_name(struct virtio_device *vdev) return dev_name(&vdpa->dev); } +static int virtio_vdpa_set_vq_affinity(struct virtqueue *vq, + const struct cpumask *cpu_mask) +{ + struct virtio_vdpa_device *vd_dev = to_virtio_vdpa_device(vq->vdev); + struct vdpa_device *vdpa = vd_dev->vdpa; + const struct vdpa_config_ops *ops = vdpa->config; + unsigned int index = vq->index; + + if (ops->set_vq_affinity) + return ops->set_vq_affinity(vdpa, index, cpu_mask); + + return 0; +} + +static const struct cpumask * +virtio_vdpa_get_vq_affinity(struct virtio_device *vdev, int index) +{ + struct vdpa_device *vdpa = vd_get_vdpa(vdev); + const struct vdpa_config_ops *ops = vdpa->config; + + if (ops->get_vq_affinity) + return ops->get_vq_affinity(vdpa, index); + + return NULL; +} + static const struct virtio_config_ops virtio_vdpa_config_ops = { .get = virtio_vdpa_get, .set = virtio_vdpa_set, @@ -349,6 +375,8 @@ static const struct virtio_config_ops virtio_vdpa_config_ops = { .get_features = virtio_vdpa_get_features, .finalize_features = virtio_vdpa_finalize_features, .bus_name = virtio_vdpa_bus_name, + .set_vq_affinity = virtio_vdpa_set_vq_affinity, + .get_vq_affinity = virtio_vdpa_get_vq_affinity, }; static void virtio_vdpa_release_dev(struct device *_d) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 43f59ef10cc9..2313db735773 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -250,6 +250,15 @@ struct vdpa_map_file { * @vdev: vdpa device * Returns the iova range supported by * the device. + * @set_vq_affinity: Set the affinity of virtqueue (optional) + * @vdev: vdpa device + * @idx: virtqueue index + * @cpu_mask: the affinity mask + * Returns integer: success (0) or error (< 0) + * @get_vq_affinity: Get the affinity of virtqueue (optional) + * @vdev: vdpa device + * @idx: virtqueue index + * Returns the affinity mask * @set_group_asid: Set address space identifier for a * virtqueue group (optional) * @vdev: vdpa device @@ -340,6 +349,10 @@ struct vdpa_config_ops { const void *buf, unsigned int len); u32 (*get_generation)(struct vdpa_device *vdev); struct vdpa_iova_range (*get_iova_range)(struct vdpa_device *vdev); + int (*set_vq_affinity)(struct vdpa_device *vdev, u16 idx, + const struct cpumask *cpu_mask); + const struct cpumask *(*get_vq_affinity)(struct vdpa_device *vdev, + u16 idx); /* DMA ops */ int (*set_map)(struct vdpa_device *vdev, unsigned int asid, |