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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
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4
drivers/crypto/virtio/virtio_crypto_core.c
View File

@ -146,7 +146,7 @@ static void virtcrypto_clean_affinity(struct virtio_crypto *vi, long hcpu)
if (vi->affinity_hint_set) {
for (i = 0; i < vi->max_data_queues; i++)
virtqueue_set_affinity(vi->data_vq[i].vq, -1);
virtqueue_set_affinity(vi->data_vq[i].vq, NULL);
vi->affinity_hint_set = false;
}
@ -173,7 +173,7 @@ static void virtcrypto_set_affinity(struct virtio_crypto *vcrypto)
*
*/
for_each_online_cpu(cpu) {
virtqueue_set_affinity(vcrypto->data_vq[i].vq, cpu);
virtqueue_set_affinity(vcrypto->data_vq[i].vq, cpumask_of(cpu));
if (++i >= vcrypto->max_data_queues)
break;
}

8
drivers/net/virtio_net.c
View File

@ -1878,8 +1878,8 @@ static void virtnet_clean_affinity(struct virtnet_info *vi, long hcpu)
if (vi->affinity_hint_set) {
for (i = 0; i < vi->max_queue_pairs; i++) {
virtqueue_set_affinity(vi->rq[i].vq, -1);
virtqueue_set_affinity(vi->sq[i].vq, -1);
virtqueue_set_affinity(vi->rq[i].vq, NULL);
virtqueue_set_affinity(vi->sq[i].vq, NULL);
}
vi->affinity_hint_set = false;
@ -1905,8 +1905,8 @@ static void virtnet_set_affinity(struct virtnet_info *vi)
for_each_online_cpu(cpu) {
const unsigned long *mask = cpumask_bits(cpumask_of(cpu));
virtqueue_set_affinity(vi->rq[i].vq, cpu);
virtqueue_set_affinity(vi->sq[i].vq, cpu);
virtqueue_set_affinity(vi->rq[i].vq, cpumask_of(cpu));
virtqueue_set_affinity(vi->sq[i].vq, cpumask_of(cpu));
__netif_set_xps_queue(vi->dev, mask, i, false);
i++;
}

7
drivers/virtio/virtio_pci_common.c
View File

@ -421,7 +421,7 @@ const char *vp_bus_name(struct virtio_device *vdev)
* - OR over all affinities for shared MSI
* - ignore the affinity request if we're using INTX
*/
int vp_set_vq_affinity(struct virtqueue *vq, int cpu)
int vp_set_vq_affinity(struct virtqueue *vq, const struct cpumask *cpu_mask)
{
struct virtio_device *vdev = vq->vdev;
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
@ -435,11 +435,10 @@ int vp_set_vq_affinity(struct virtqueue *vq, int cpu)
if (vp_dev->msix_enabled) {
mask = vp_dev->msix_affinity_masks[info->msix_vector];
irq = pci_irq_vector(vp_dev->pci_dev, info->msix_vector);
if (cpu == -1)
if (!cpu_mask)
irq_set_affinity_hint(irq, NULL);
else {
cpumask_clear(mask);
cpumask_set_cpu(cpu, mask);
cpumask_copy(mask, cpu_mask);
irq_set_affinity_hint(irq, mask);
}
}

2
drivers/virtio/virtio_pci_common.h
View File

@ -141,7 +141,7 @@ const char *vp_bus_name(struct virtio_device *vdev);
* - OR over all affinities for shared MSI
* - ignore the affinity request if we're using INTX
*/
int vp_set_vq_affinity(struct virtqueue *vq, int cpu);
int vp_set_vq_affinity(struct virtqueue *vq, const struct cpumask *cpu_mask);
const struct cpumask *vp_get_vq_affinity(struct virtio_device *vdev, int index);

7
include/linux/virtio_config.h
View File

@ -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;
}