1What: /sys/bus/vmbus/devices/<UUID>/id 2Date: Jul 2009 3KernelVersion: 2.6.31 4Contact: K. Y. Srinivasan <kys@microsoft.com> 5Description: The VMBus child_relid of the device's primary channel 6Users: tools/hv/lsvmbus 7 8What: /sys/bus/vmbus/devices/<UUID>/class_id 9Date: Jul 2009 10KernelVersion: 2.6.31 11Contact: K. Y. Srinivasan <kys@microsoft.com> 12Description: The VMBus interface type GUID of the device 13Users: tools/hv/lsvmbus 14 15What: /sys/bus/vmbus/devices/<UUID>/device_id 16Date: Jul 2009 17KernelVersion: 2.6.31 18Contact: K. Y. Srinivasan <kys@microsoft.com> 19Description: The VMBus interface instance GUID of the device 20Users: tools/hv/lsvmbus 21 22What: /sys/bus/vmbus/devices/<UUID>/channel_vp_mapping 23Date: Jul 2015 24KernelVersion: 4.2.0 25Contact: K. Y. Srinivasan <kys@microsoft.com> 26Description: The mapping of which primary/sub channels are bound to which 27 Virtual Processors. 28 Format: <channel's child_relid:the bound cpu's number> 29Users: tools/hv/lsvmbus 30 31What: /sys/bus/vmbus/devices/<UUID>/device 32Date: Dec. 2015 33KernelVersion: 4.5 34Contact: K. Y. Srinivasan <kys@microsoft.com> 35Description: The 16 bit device ID of the device 36Users: tools/hv/lsvmbus and user level RDMA libraries 37 38What: /sys/bus/vmbus/devices/<UUID>/vendor 39Date: Dec. 2015 40KernelVersion: 4.5 41Contact: K. Y. Srinivasan <kys@microsoft.com> 42Description: The 16 bit vendor ID of the device 43Users: tools/hv/lsvmbus and user level RDMA libraries 44 45What: /sys/bus/vmbus/devices/<UUID>/numa_node 46Date: Jul 2018 47KernelVersion: 4.19 48Contact: Stephen Hemminger <sthemmin@microsoft.com> 49Description: This NUMA node to which the VMBUS device is 50 attached, or -1 if the node is unknown. 51 52What: /sys/bus/vmbus/devices/<UUID>/channels/<N> 53Date: September. 2017 54KernelVersion: 4.14 55Contact: Stephen Hemminger <sthemmin@microsoft.com> 56Description: Directory for per-channel information 57 NN is the VMBUS relid associtated with the channel. 58 59What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu 60Date: September. 2017 61KernelVersion: 4.14 62Contact: Stephen Hemminger <sthemmin@microsoft.com> 63Description: VCPU (sub)channel is affinitized to 64Users: tools/hv/lsvmbus and other debugging tools 65 66What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/in_mask 67Date: September. 2017 68KernelVersion: 4.14 69Contact: Stephen Hemminger <sthemmin@microsoft.com> 70Description: Host to guest channel interrupt mask 71Users: Debugging tools 72 73What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/latency 74Date: September. 2017 75KernelVersion: 4.14 76Contact: Stephen Hemminger <sthemmin@microsoft.com> 77Description: Channel signaling latency. This file is available only for 78 performance critical channels (storage, network, etc.) that use 79 the monitor page mechanism. 80Users: Debugging tools 81 82What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/out_mask 83Date: September. 2017 84KernelVersion: 4.14 85Contact: Stephen Hemminger <sthemmin@microsoft.com> 86Description: Guest to host channel interrupt mask 87Users: Debugging tools 88 89What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/pending 90Date: September. 2017 91KernelVersion: 4.14 92Contact: Stephen Hemminger <sthemmin@microsoft.com> 93Description: Channel interrupt pending state. This file is available only for 94 performance critical channels (storage, network, etc.) that use 95 the monitor page mechanism. 96Users: Debugging tools 97 98What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/read_avail 99Date: September. 2017 100KernelVersion: 4.14 101Contact: Stephen Hemminger <sthemmin@microsoft.com> 102Description: Bytes available to read 103Users: Debugging tools 104 105What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/write_avail 106Date: September. 2017 107KernelVersion: 4.14 108Contact: Stephen Hemminger <sthemmin@microsoft.com> 109Description: Bytes available to write 110Users: Debugging tools 111 112What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/events 113Date: September. 2017 114KernelVersion: 4.14 115Contact: Stephen Hemminger <sthemmin@microsoft.com> 116Description: Number of times we have signaled the host 117Users: Debugging tools 118 119What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/interrupts 120Date: September. 2017 121KernelVersion: 4.14 122Contact: Stephen Hemminger <sthemmin@microsoft.com> 123Description: Number of times we have taken an interrupt (incoming) 124Users: Debugging tools 125 126What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/subchannel_id 127Date: January. 2018 128KernelVersion: 4.16 129Contact: Stephen Hemminger <sthemmin@microsoft.com> 130Description: Subchannel ID associated with VMBUS channel 131Users: Debugging tools and userspace drivers 132 133What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/monitor_id 134Date: January. 2018 135KernelVersion: 4.16 136Contact: Stephen Hemminger <sthemmin@microsoft.com> 137Description: Monitor bit associated with channel. This file is available only 138 for performance critical channels (storage, network, etc.) that 139 use the monitor page mechanism. 140Users: Debugging tools and userspace drivers 141 142What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/ring 143Date: January. 2018 144KernelVersion: 4.16 145Contact: Stephen Hemminger <sthemmin@microsoft.com> 146Description: Binary file created by uio_hv_generic for ring buffer 147Users: Userspace drivers 148 149What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/intr_in_full 150Date: February 2019 151KernelVersion: 5.0 152Contact: Michael Kelley <mikelley@microsoft.com> 153Description: Number of guest to host interrupts caused by the inbound ring 154 buffer transitioning from full to not full while a packet is 155 waiting for buffer space to become available 156Users: Debugging tools 157 158What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/intr_out_empty 159Date: February 2019 160KernelVersion: 5.0 161Contact: Michael Kelley <mikelley@microsoft.com> 162Description: Number of guest to host interrupts caused by the outbound ring 163 buffer transitioning from empty to not empty 164Users: Debugging tools 165 166What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/out_full_first 167Date: February 2019 168KernelVersion: 5.0 169Contact: Michael Kelley <mikelley@microsoft.com> 170Description: Number of write operations that were the first to encounter an 171 outbound ring buffer full condition 172Users: Debugging tools 173 174What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/out_full_total 175Date: February 2019 176KernelVersion: 5.0 177Contact: Michael Kelley <mikelley@microsoft.com> 178Description: Total number of write operations that encountered an outbound 179 ring buffer full condition 180Users: Debugging tools 181