diff --git a/Documentation/ABI/stable/sysfs-bus-vmbus b/Documentation/ABI/stable/sysfs-bus-vmbus index 3eaffbb2d468933233c576cd9f4796b393c67620..3fed8fdb873d723e3bc25e155dee3be2d797d352 100644 --- a/Documentation/ABI/stable/sysfs-bus-vmbus +++ b/Documentation/ABI/stable/sysfs-bus-vmbus @@ -42,6 +42,13 @@ Contact: K. Y. Srinivasan Description: The 16 bit vendor ID of the device Users: tools/hv/lsvmbus and user level RDMA libraries +What: /sys/bus/vmbus/devices//numa_node +Date: Jul 2018 +KernelVersion: 4.19 +Contact: Stephen Hemminger +Description: This NUMA node to which the VMBUS device is + attached, or -1 if the node is unknown. + What: /sys/bus/vmbus/devices//channels/ Date: September. 2017 KernelVersion: 4.14 diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index db145e1a70499db7c79644976d6970b5cc58863f..b1b548a21f919b31f8e5d7f670352ee6f7d25f56 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -210,6 +210,20 @@ static ssize_t modalias_show(struct device *dev, } static DEVICE_ATTR_RO(modalias); +#ifdef CONFIG_NUMA +static ssize_t numa_node_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct hv_device *hv_dev = device_to_hv_device(dev); + + if (!hv_dev->channel) + return -ENODEV; + + return sprintf(buf, "%d\n", hv_dev->channel->numa_node); +} +static DEVICE_ATTR_RO(numa_node); +#endif + static ssize_t server_monitor_pending_show(struct device *dev, struct device_attribute *dev_attr, char *buf) @@ -492,6 +506,9 @@ static struct attribute *vmbus_dev_attrs[] = { &dev_attr_class_id.attr, &dev_attr_device_id.attr, &dev_attr_modalias.attr, +#ifdef CONFIG_NUMA + &dev_attr_numa_node.attr, +#endif &dev_attr_server_monitor_pending.attr, &dev_attr_client_monitor_pending.attr, &dev_attr_server_monitor_latency.attr,