From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Sun, 29 Oct 2017 12:21:06 -0700
Patch-mainline: v4.15-rc1
Subject: hyper-v: trace vmbus_ongpadl_torndown()
Git-commit: 602a8c525c8c7b2ff446894fc6b21f42471c952f
References: fate#323887

Add tracepoint to CHANNELMSG_GPADL_TORNDOWN handler.

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_mgmt.c | 2 ++
 drivers/hv/hv_trace.h     | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -1082,6 +1082,8 @@ static void vmbus_ongpadl_torndown(
 
 	gpadl_torndown = (struct vmbus_channel_gpadl_torndown *)hdr;
 
+	trace_vmbus_ongpadl_torndown(gpadl_torndown);
+
 	/*
 	 * 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
--- a/drivers/hv/hv_trace.h
+++ b/drivers/hv/hv_trace.h
@@ -103,6 +103,14 @@ TRACE_EVENT(vmbus_ongpadl_created,
 		    )
 	);
 
+TRACE_EVENT(vmbus_ongpadl_torndown,
+	    TP_PROTO(const struct vmbus_channel_gpadl_torndown *gpadltorndown),
+	    TP_ARGS(gpadltorndown),
+	    TP_STRUCT__entry(__field(u32, gpadl)),
+	    TP_fast_assign(__entry->gpadl = gpadltorndown->gpadl),
+	    TP_printk("gpadl 0x%x", __entry->gpadl)
+	);
+
 #undef TRACE_INCLUDE_PATH
 #define TRACE_INCLUDE_PATH .
 #undef TRACE_INCLUDE_FILE