* [PATCH 2/3] tools: hv: add a python script lsvmbus to list VMBus devices
2015-07-20 16:29 ` [PATCH 1/3] Drivers: hv: vmbus: add a sysfs attr to show the binding of channel/VP K. Y. Srinivasan
@ 2015-07-20 16:29 ` K. Y. Srinivasan
2015-07-20 16:29 ` [PATCH 3/3] Drivers: hv: vmbus: document the VMBus sysfs files K. Y. Srinivasan
1 sibling, 0 replies; 4+ messages in thread
From: K. Y. Srinivasan @ 2015-07-20 16:29 UTC (permalink / raw)
To: gregkh, linux-kernel, devel, olaf, apw, vkuznets, jasowang
Cc: Dexuan Cui, K. Y. Srinivasan
From: Dexuan Cui <decui@microsoft.com>
By default lsvmbus lists all the devices in the VMBus.
With -v or -vv, more information is printed, including the VMBus
Rel_ID, class ID, device ID and which channel is bound to which
virtual processor, etc.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
tools/hv/lsvmbus | 101 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 101 insertions(+), 0 deletions(-)
create mode 100644 tools/hv/lsvmbus
diff --git a/tools/hv/lsvmbus b/tools/hv/lsvmbus
new file mode 100644
index 0000000..162a378
--- /dev/null
+++ b/tools/hv/lsvmbus
@@ -0,0 +1,101 @@
+#!/usr/bin/env python
+
+import os
+from optparse import OptionParser
+
+parser = OptionParser()
+parser.add_option("-v", "--verbose", dest="verbose",
+ help="print verbose messages. Try -vv, -vvv for \
+ more verbose messages", action="count")
+
+(options, args) = parser.parse_args()
+
+verbose = 0
+if options.verbose is not None:
+ verbose = options.verbose
+
+vmbus_sys_path = '/sys/bus/vmbus/devices'
+if not os.path.isdir(vmbus_sys_path):
+ print "%s doesn't exist: exiting..." % vmbus_sys_path
+ exit(-1)
+
+vmbus_dev_dict = {
+ '{0e0b6031-5213-4934-818b-38d90ced39db}' : '[Operating system shutdown]',
+ '{9527e630-d0ae-497b-adce-e80ab0175caf}' : '[Time Synchronization]',
+ '{57164f39-9115-4e78-ab55-382f3bd5422d}' : '[Heartbeat]',
+ '{a9a0f4e7-5a45-4d96-b827-8a841e8c03e6}' : '[Data Exchange]',
+ '{35fa2e29-ea23-4236-96ae-3a6ebacba440}' : '[Backup (volume checkpoint)]',
+ '{34d14be3-dee4-41c8-9ae7-6b174977c192}' : '[Guest services]',
+ '{525074dc-8985-46e2-8057-a307dc18a502}' : '[Dynamic Memory]',
+ '{cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a}' : 'Synthetic mouse',
+ '{f912ad6d-2b17-48ea-bd65-f927a61c7684}' : 'Synthetic keyboard',
+ '{da0a7802-e377-4aac-8e77-0558eb1073f8}' : 'Synthetic framebuffer adapter',
+ '{f8615163-df3e-46c5-913f-f2d2f965ed0e}' : 'Synthetic network adapter',
+ '{32412632-86cb-44a2-9b5c-50d1417354f5}' : 'Synthetic IDE Controller',
+ '{ba6163d9-04a1-4d29-b605-72e2ffb1dc7f}' : 'Synthetic SCSI Controller',
+ '{2f9bcc4a-0069-4af3-b76b-6fd0be528cda}' : 'Synthetic fiber channel adapter',
+ '{8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501}' : 'Synthetic RDMA adapter',
+ '{276aacf4-ac15-426c-98dd-7521ad3f01fe}' : '[Reserved system device]',
+ '{f8e65716-3cb3-4a06-9a60-1889c5cccab5}' : '[Reserved system device]',
+ '{3375baf4-9e15-4b30-b765-67acb10d607b}' : '[Reserved system device]',
+}
+
+def get_vmbus_dev_attr(dev_name, attr):
+ try:
+ f = open('%s/%s/%s' % (vmbus_sys_path, dev_name, attr), 'r')
+ lines = f.readlines()
+ f.close()
+ except IOError:
+ lines = []
+
+ return lines
+
+class VMBus_Dev:
+ pass
+
+
+vmbus_dev_list = []
+
+for f in os.listdir(vmbus_sys_path):
+ vmbus_id = get_vmbus_dev_attr(f, 'id')[0].strip()
+ class_id = get_vmbus_dev_attr(f, 'class_id')[0].strip()
+ device_id = get_vmbus_dev_attr(f, 'device_id')[0].strip()
+ dev_desc = vmbus_dev_dict.get(class_id, 'Unknown')
+
+ chn_vp_mapping = get_vmbus_dev_attr(f, 'channel_vp_mapping')
+ chn_vp_mapping = [c.strip() for c in chn_vp_mapping]
+ chn_vp_mapping = sorted(chn_vp_mapping,
+ key = lambda c : int(c.split(':')[0]))
+
+ chn_vp_mapping = ['\tRel_ID=%s, target_cpu=%s' %
+ (c.split(':')[0], c.split(':')[1])
+ for c in chn_vp_mapping]
+ d = VMBus_Dev()
+ d.sysfs_path = '%s/%s' % (vmbus_sys_path, f)
+ d.vmbus_id = vmbus_id
+ d.class_id = class_id
+ d.device_id = device_id
+ d.dev_desc = dev_desc
+ d.chn_vp_mapping = '\n'.join(chn_vp_mapping)
+ if d.chn_vp_mapping:
+ d.chn_vp_mapping += '\n'
+
+ vmbus_dev_list.append(d)
+
+
+vmbus_dev_list = sorted(vmbus_dev_list, key = lambda d : int(d.vmbus_id))
+
+format0 = '%2s: %s'
+format1 = '%2s: Class_ID = %s - %s\n%s'
+format2 = '%2s: Class_ID = %s - %s\n\tDevice_ID = %s\n\tSysfs path: %s\n%s'
+
+for d in vmbus_dev_list:
+ if verbose == 0:
+ print ('VMBUS ID ' + format0) % (d.vmbus_id, d.dev_desc)
+ elif verbose == 1:
+ print ('VMBUS ID ' + format1) % \
+ (d.vmbus_id, d.class_id, d.dev_desc, d.chn_vp_mapping)
+ else:
+ print ('VMBUS ID ' + format2) % \
+ (d.vmbus_id, d.class_id, d.dev_desc, \
+ d.device_id, d.sysfs_path, d.chn_vp_mapping)
--
1.7.4.1
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH 3/3] Drivers: hv: vmbus: document the VMBus sysfs files
2015-07-20 16:29 ` [PATCH 1/3] Drivers: hv: vmbus: add a sysfs attr to show the binding of channel/VP K. Y. Srinivasan
2015-07-20 16:29 ` [PATCH 2/3] tools: hv: add a python script lsvmbus to list VMBus devices K. Y. Srinivasan
@ 2015-07-20 16:29 ` K. Y. Srinivasan
1 sibling, 0 replies; 4+ messages in thread
From: K. Y. Srinivasan @ 2015-07-20 16:29 UTC (permalink / raw)
To: gregkh, linux-kernel, devel, olaf, apw, vkuznets, jasowang
Cc: Dexuan Cui, K. Y. Srinivasan
From: Dexuan Cui <decui@microsoft.com>
The 4 sysfs files should be stable ABIs to the user space.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
Documentation/ABI/stable/sysfs-bus-vmbus | 29 +++++++++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 30 insertions(+), 0 deletions(-)
create mode 100644 Documentation/ABI/stable/sysfs-bus-vmbus
diff --git a/Documentation/ABI/stable/sysfs-bus-vmbus b/Documentation/ABI/stable/sysfs-bus-vmbus
new file mode 100644
index 0000000..636e938
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-bus-vmbus
@@ -0,0 +1,29 @@
+What: /sys/bus/vmbus/devices/vmbus_*/id
+Date: Jul 2009
+KernelVersion: 2.6.31
+Contact: K. Y. Srinivasan <kys@microsoft.com>
+Description: The VMBus child_relid of the device's primary channel
+Users: tools/hv/lsvmbus
+
+What: /sys/bus/vmbus/devices/vmbus_*/class_id
+Date: Jul 2009
+KernelVersion: 2.6.31
+Contact: K. Y. Srinivasan <kys@microsoft.com>
+Description: The VMBus interface type GUID of the device
+Users: tools/hv/lsvmbus
+
+What: /sys/bus/vmbus/devices/vmbus_*/device_id
+Date: Jul 2009
+KernelVersion: 2.6.31
+Contact: K. Y. Srinivasan <kys@microsoft.com>
+Description: The VMBus interface instance GUID of the device
+Users: tools/hv/lsvmbus
+
+What: /sys/bus/vmbus/devices/vmbus_*/channel_vp_mapping
+Date: Jul 2015
+KernelVersion: 4.2.0
+Contact: K. Y. Srinivasan <kys@microsoft.com>
+Description: The mapping of which primary/sub channels are bound to which
+ Virtual Processors.
+ Format: <channel's child_relid:the bound cpu's number>
+Users: tools/hv/lsvmbus
diff --git a/MAINTAINERS b/MAINTAINERS
index fd60784..45ef1e1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4956,6 +4956,7 @@ F: drivers/scsi/storvsc_drv.c
F: drivers/video/fbdev/hyperv_fb.c
F: include/linux/hyperv.h
F: tools/hv/
+F: Documentation/ABI/stable/sysfs-bus-vmbus
I2C OVER PARALLEL PORT
M: Jean Delvare <jdelvare@suse.de>
--
1.7.4.1
^ permalink raw reply [flat|nested] 4+ messages in thread