Commit 19e226e8 authored by Caleb Raitto's avatar Caleb Raitto Committed by David S. Miller
Browse files

virtio: Make vp_set_vq_affinity() take a mask. 

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: default avatarWillem de Bruijn <willemb@google.com>
Signed-off-by: default avatarCaleb Raitto <caraitto@google.com>
Acked-by: default avatarGonglei <arei.gonglei@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 07624df1

drivers/crypto/virtio/virtio_crypto_core.c

+2 −2
Original line number Diff line number Diff line
@@ -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;

	}

drivers/net/virtio_net.c

+4 −4
Original line number Diff line number Diff line
@@ -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++;

	}

drivers/virtio/virtio_pci_common.c

+3 −4
Original line number Diff line number Diff line
@@ -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);

		}

	}

drivers/virtio/virtio_pci_common.h

+1 −1
Original line number Diff line number Diff line
@@ -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);

include/linux/virtio_config.h

+4 −3
Original line number Diff line number Diff line
@@ -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;

}

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