diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index dc6f364..b2b3dba 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -78,6 +78,8 @@
 #include <linux/compiler.h>		/* For unlikely.  */
 #include <linux/sched.h>		/* For struct task_struct.  */
 
+
+extern long arch_ptrace(struct task_struct *child, long request, long addr, long data);
 extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len);
 extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len);
 extern int ptrace_attach(struct task_struct *tsk);