[PATCH 05/16] hyper-v: trace vmbus_onopen_result()

Vitaly Kuznetsov
2017-09-20T17:22:23Z

Add tracepoint to CHANNELMSG_OPENCHANNEL_RESULT handler.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
drivers/hv/channel_mgmt.c | 2 ++
drivers/hv/hv_trace.h | 17 +++++++++++++++++
2 files changed, 19 insertions(+)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 563653a02ab6..2abe0563876b 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -980,6 +980,8 @@ static void vmbus_onopen_result(struct vmbus_channel_message_header *hdr)

result = (struct vmbus_channel_open_result *)hdr;

+ trace_vmbus_onopen_result(result);
+
/*
* Find the open msg, copy the result and signal/unblock the wait event
*/
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index d2a5a97dcf2a..c98d66d683f4 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -67,6 +67,23 @@ TRACE_EVENT(vmbus_onoffer_rescind,
TP_printk("child_relid 0x%x", __entry->child_relid)
);

+TRACE_EVENT(vmbus_onopen_result,
+ TP_PROTO(const struct vmbus_channel_open_result *result),
+ TP_ARGS(result),
+ TP_STRUCT__entry(
+ __field(u32, child_relid)
+ __field(u32, openid)
+ __field(u32, status)
+ ),
+ TP_fast_assign(__entry->child_relid = result->child_relid;
+ __entry->openid = result->openid;
+ __entry->status = result->status;
+ ),
+ TP_printk("child_relid 0x%x, openid %d, status %d",
+ __entry->child_relid, __entry->openid, __entry->status
+ )