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-rw-r--r--samples/ftrace/ftrace-direct-multi.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/samples/ftrace/ftrace-direct-multi.c b/samples/ftrace/ftrace-direct-multi.c
index 2a5b1fb7ac14..b6d7806b400e 100644
--- a/samples/ftrace/ftrace-direct-multi.c
+++ b/samples/ftrace/ftrace-direct-multi.c
@@ -5,6 +5,8 @@
#include <linux/ftrace.h>
#include <linux/sched/stat.h>
+extern void my_direct_func(unsigned long ip);
+
void my_direct_func(unsigned long ip)
{
trace_printk("ip %lx\n", ip);