diff options
Diffstat (limited to 'drivers/pci/controller/pci-hyperv.c')
| -rw-r--r-- | drivers/pci/controller/pci-hyperv.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index 2c7a406b4ba8..49c0a2d51162 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -2485,6 +2485,14 @@ static void hv_pci_assign_numa_node(struct hv_pcibus_device *hbus) if (!hv_dev) continue; + /* + * If the Hyper-V host doesn't provide a NUMA node for the + * device, default to node 0. With NUMA_NO_NODE the kernel + * may spread work across NUMA nodes, which degrades + * performance on Hyper-V. + */ + set_dev_node(&dev->dev, 0); + if (hv_dev->desc.flags & HV_PCI_DEVICE_FLAG_NUMA_AFFINITY && hv_dev->desc.virtual_numa_node < num_possible_nodes()) /* @@ -3778,7 +3786,7 @@ static int hv_pci_probe(struct hv_device *hdev, hbus->bridge->domain_nr); if (!hbus->wq) { ret = -ENOMEM; - goto free_dom; + goto free_bus; } hdev->channel->next_request_id_callback = vmbus_next_request_id; @@ -3874,8 +3882,6 @@ close: vmbus_close(hdev->channel); destroy_wq: destroy_workqueue(hbus->wq); -free_dom: - pci_bus_release_emul_domain_nr(hbus->bridge->domain_nr); free_bus: kfree(hbus); return ret; |