From 5510c14e56f3e99e7dfd9208742143791e14a2e2 Mon Sep 17 00:00:00 2001
From: David Ahern <dsahern@gmail.com>
Date: Mon, 29 Apr 2019 11:22:07 -0700
Subject: [PATCH] notifier: add tracepoint to notifier_call_chain

Signed-off-by: David Ahern <dsahern@gmail.com>
---
 kernel/notifier.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/notifier.c b/kernel/notifier.c
index 6196af8a8223..9b65a9c56fd7 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -5,6 +5,8 @@
 #include <linux/rcupdate.h>
 #include <linux/vmalloc.h>
 #include <linux/reboot.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/notifier.h>
 
 /*
  *	Notifier list for kernel code which wants to be called
@@ -90,6 +92,7 @@ static int notifier_call_chain(struct notifier_block **nl,
 			continue;
 		}
 #endif
+		trace_notifier_call_chain(nb, val);
 		ret = nb->notifier_call(nb, val, v);
 
 		if (nr_calls)
-- 
2.11.0