Displaying 4 results from an estimated 4 matches for "ce021d1".
2019 Mar 13
2
virtio-blk: should num_vqs be limited by num_possible_cpus()?
...vblk)
if (err)
num_vqs = 1;
+ num_vqs = virtio_calc_num_vqs(vdev, num_vqs);
+
vblk->vqs = kmalloc_array(num_vqs, sizeof(*vblk->vqs), GFP_KERNEL);
if (!vblk->vqs)
return -ENOMEM;
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index d0584c0..ce021d1 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -409,6 +409,12 @@ int vp_find_vqs(struct virtio_device *vdev, unsigned nvqs,
return vp_find_vqs_intx(vdev, nvqs, vqs, callbacks, names, ctx);
}
+/* the config->calc_num_vqs() implementation */
+unsign...
2019 Mar 13
2
virtio-blk: should num_vqs be limited by num_possible_cpus()?
...vblk)
if (err)
num_vqs = 1;
+ num_vqs = virtio_calc_num_vqs(vdev, num_vqs);
+
vblk->vqs = kmalloc_array(num_vqs, sizeof(*vblk->vqs), GFP_KERNEL);
if (!vblk->vqs)
return -ENOMEM;
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index d0584c0..ce021d1 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -409,6 +409,12 @@ int vp_find_vqs(struct virtio_device *vdev, unsigned nvqs,
return vp_find_vqs_intx(vdev, nvqs, vqs, callbacks, names, ctx);
}
+/* the config->calc_num_vqs() implementation */
+unsign...
2019 Mar 12
4
virtio-blk: should num_vqs be limited by num_possible_cpus()?
I observed that there is one msix vector for config and one shared vector
for all queues in below qemu cmdline, when the num-queues for virtio-blk
is more than the number of possible cpus:
qemu: "-smp 4" while "-device virtio-blk-pci,drive=drive-0,id=virtblk0,num-queues=6"
# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
... ...
24: 0
2019 Mar 12
4
virtio-blk: should num_vqs be limited by num_possible_cpus()?
I observed that there is one msix vector for config and one shared vector
for all queues in below qemu cmdline, when the num-queues for virtio-blk
is more than the number of possible cpus:
qemu: "-smp 4" while "-device virtio-blk-pci,drive=drive-0,id=virtblk0,num-queues=6"
# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
... ...
24: 0