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[PATCH v2 08/16] hyper-v: trace vmbus_onversion_response()

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Add tracepoint to CHANNELMSG_VERSION_RESPONSE handler.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
 drivers/hv/channel_mgmt.c |  3 +++
 drivers/hv/hv_trace.h     | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 1ff2cc064850..a9a1fc1424c6 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -1121,6 +1121,9 @@ static void vmbus_onversion_response(
 	unsigned long flags;
 
 	version_response = (struct vmbus_channel_version_response *)hdr;
+
+	trace_vmbus_onversion_response(version_response);
+
 	spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
 
 	list_for_each_entry(msginfo, &vmbus_connection.chn_msg_list,
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index 0c50527c815c..e99db56d27b7 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -111,6 +111,17 @@ TRACE_EVENT(vmbus_ongpadl_torndown,
 	    TP_printk("gpadl 0x%x", __entry->gpadl)
 	);
 
+TRACE_EVENT(vmbus_onversion_response,
+	    TP_PROTO(const struct vmbus_channel_version_response *response),
+	    TP_ARGS(response),
+	    TP_STRUCT__entry(
+		    __field(u8, ver)
+		    ),
+	    TP_fast_assign(__entry->ver = response->version_supported;
+		    ),
+	    TP_printk("version_supported %d", __entry->ver)
+	);
+
 #undef TRACE_INCLUDE_PATH
 #define TRACE_INCLUDE_PATH .
 #undef TRACE_INCLUDE_FILE
-- 
2.13.5

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[PATCH v2 00/16] Hyper-V: add tracing to VMBus module and trace all messages Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 13/16] hyper-v: trace vmbus_teardown_gpadl() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 05/16] hyper-v: trace vmbus_onopen_result() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 15/16] hyper-v: trace vmbus_release_relid() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 12/16] hyper-v: trace vmbus_establish_gpadl() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:30 +0200
  [PATCH v2 02/16] hyper-v: trace vmbus_on_message() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200
  [PATCH v2 08/16] hyper-v: trace vmbus_onversion_response() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200
  [PATCH v2 04/16] hyper-v: trace vmbus_onoffer_rescind() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200
  [PATCH v2 11/16] hyper-v: trace vmbus_close_internal() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200
  [PATCH v2 06/16] hyper-v: trace vmbus_ongpadl_created() Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-09-29 15:40 +0200

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