-extern struct syscall_metadata *syscall_nr_to_meta(int nr);
-extern int syscall_name_to_nr(char *name);
-void set_syscall_enter_id(int num, int id);
-void set_syscall_exit_id(int num, int id);
-extern struct trace_event event_syscall_enter;
-extern struct trace_event event_syscall_exit;
+extern unsigned long arch_syscall_addr(int nr);
+extern int init_syscall_trace(struct ftrace_event_call *call);