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authorVitaly Kuznetsov <vkuznets@redhat.com>2017-10-29 12:21:01 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-04 12:04:24 +0100
commit716fa52fb474a36ddd3cbc981108f93610c973ef (patch)
tree9fb42e3f344aa4810d7e6ac781f37f7ba2fcc3db /drivers
parentc9fe0f8fa4136c2451dcc012e48fbf4470d6b592 (diff)
hyper-v: trace vmbus_on_message()
Add tracepoint to vmbus_on_message() which is called when we start processing a blocking from work context. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hv/channel_mgmt.c2
-rw-r--r--drivers/hv/hv_trace.h5
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index a8dc9a164631..71d4d68488d4 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -1176,6 +1176,8 @@ void vmbus_onmessage(void *context)
hdr = (struct vmbus_channel_message_header *)msg->u.payload;
size = msg->header.payload_size;
+ trace_vmbus_on_message(hdr);
+
if (hdr->msgtype >= CHANNELMSG_COUNT) {
pr_err("Received invalid channel message type %d size %d\n",
hdr->msgtype, size);
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
index 9c2772922c76..d432aba5df8a 100644
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -19,6 +19,11 @@ DEFINE_EVENT(vmbus_hdr_msg, vmbus_on_msg_dpc,
TP_ARGS(hdr)
);
+DEFINE_EVENT(vmbus_hdr_msg, vmbus_on_message,
+ TP_PROTO(const struct vmbus_channel_message_header *hdr),
+ TP_ARGS(hdr)
+);
+
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE

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