diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 3fa4c59..5ad4199 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -492,6 +492,8 @@
 __trace_printk(unsigned long ip, const char *fmt, ...)
 	__attribute__ ((format (printf, 2, 3)));
 
+extern void trace_dump_stack(void);
+
 /*
  * The double __builtin_constant_p is because gcc will give us an error
  * if we try to allocate the static variable to fmt if it is not a