From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Sun, 29 Oct 2017 12:21:12 -0700
Patch-mainline: v4.15-rc1
Subject: hyper-v: trace vmbus_teardown_gpadl()
Git-commit: 09cdf8f87c15dbe9a3eeb6de04aaafd0cd922d6d
References: fate#323887

Add tracepoint to CHANNELMSG_GPADL_TEARDOWN sender.

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>
Acked-by: Olaf Hering <ohering@suse.de>
---
 drivers/hv/channel.c  |  2 ++
 drivers/hv/hv_trace.h | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -519,6 +519,8 @@ int vmbus_teardown_gpadl(struct vmbus_channel *channel, u32 gpadl_handle)
 	ret = vmbus_post_msg(msg, sizeof(struct vmbus_channel_gpadl_teardown),
 			     true);
 
+	trace_vmbus_teardown_gpadl(msg, ret);
+
 	if (ret)
 		goto post_msg_err;
 
diff --git a/drivers/hv/hv_trace.h b/drivers/hv/hv_trace.h
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -214,6 +214,24 @@ TRACE_EVENT(vmbus_establish_gpadl_body,
 		    )
 	);
 
+TRACE_EVENT(vmbus_teardown_gpadl,
+	    TP_PROTO(const struct vmbus_channel_gpadl_teardown *msg, int ret),
+	    TP_ARGS(msg, ret),
+	    TP_STRUCT__entry(
+		    __field(u32, child_relid)
+		    __field(u32, gpadl)
+		    __field(int, ret)
+		    ),
+	    TP_fast_assign(
+		    __entry->child_relid = msg->child_relid;
+		    __entry->gpadl = msg->gpadl;
+		    __entry->ret = ret;
+		    ),
+	    TP_printk("sending child_relid 0x%x, gpadl 0x%x, ret %d",
+		      __entry->child_relid, __entry->gpadl, __entry->ret
+		    )
+	);
+
 #undef TRACE_INCLUDE_PATH
 #define TRACE_INCLUDE_PATH .
 #undef TRACE_INCLUDE_FILE