-extern int tracepoint_probe_register_noupdate(const char *name, void *callback, void *priv);
-extern int tracepoint_probe_unregister_noupdate(const char *name, void *callback, void *priv);
+extern int tracepoint_probe_register_noupdate(const char *name,
+ void (*callback)(void), void *priv,
+ const char *signature);
+extern int tracepoint_probe_unregister_noupdate(const char *name,
+ void (*callback)(void), void *priv);