diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index c56a233..7824a55 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -841,6 +841,7 @@
 extern const char *__stop___trace_bprintk_fmt[];
 
 void trace_printk_init_buffers(void);
+void trace_printk_start_comm(void);
 
 #undef FTRACE_ENTRY
 #define FTRACE_ENTRY(call, struct_name, id, tstruct, print, filter)	\