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Message-Id: <20180810011828.199888-2-caleb.raitto@gmail.com>
Date: Thu, 9 Aug 2018 18:18:28 -0700
From: Caleb Raitto <caleb.raitto@...il.com>
To: herbert@...dor.apana.org.au, mst@...hat.com, davem@...emloft.net
Cc: arei.gonglei@...wei.com, jasowang@...hat.com,
netdev@...r.kernel.org, linux-crypto@...r.kernel.org,
Caleb Raitto <caraitto@...gle.com>
Subject: [PATCH net-next 1/2] virtio: Make vp_set_vq_affinity() take a mask.
From: Caleb Raitto <caraitto@...gle.com>
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@...gle.com>
Signed-off-by: Caleb Raitto <caraitto@...gle.com>
---
drivers/crypto/virtio/virtio_crypto_core.c | 4 ++--
drivers/net/virtio_net.c | 8 ++++----
drivers/virtio/virtio_pci_common.c | 7 +++----
drivers/virtio/virtio_pci_common.h | 2 +-
include/linux/virtio_config.h | 7 ++++---
5 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/drivers/crypto/virtio/virtio_crypto_core.c b/drivers/crypto/virtio/virtio_crypto_core.c
index 83326986c113..7c7198553699 100644
--- a/drivers/crypto/virtio/virtio_crypto_core.c
+++ b/drivers/crypto/virtio/virtio_crypto_core.c
@@ -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;
}
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 39a7f4452587..43fabc0eb4d2 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -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++;
}
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index 705aebd74e56..465a6f5142cc 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -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);
}
}
diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h
index 135ee3cf7175..02271002c2f3 100644
--- a/drivers/virtio/virtio_pci_common.h
+++ b/drivers/virtio/virtio_pci_common.h
@@ -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);
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 5559a2d31c46..32baf8e26735 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -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;
}
--
2.18.0.597.ga71716f1ad-goog
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