extern void os_stop_process(int pid);
extern void os_kill_process(int pid, int reap_child);
extern void os_kill_ptraced_process(int pid, int reap_child);
+#ifdef UML_CONFIG_MODE_TT
extern void os_usr1_process(int pid);
+#endif
extern long os_ptrace_ldt(long pid, long addr, long data);
extern int os_getpid(void);
extern void unblock_signals(void);
extern int get_signals(void);
extern int set_signals(int enable);
-extern void os_usr1_signal(int on);
/* trap.c */
extern void os_fill_handlinfo(struct kern_handlers h);