Commit 716fa52f authored Oct 29, 2017 by Vitaly Kuznetsov Committed by Greg Kroah-Hartman Nov 04, 2017

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>

parent c9fe0f8f

drivers/hv/channel_mgmt.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);

drivers/hv/hv_trace.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -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