added ptrace hook for ia64

arch/ia64/kernel/ptrace.c

@@ -15,6 +15,7 @@
 #include <linux/ptrace.h>
 #include <linux/smp_lock.h>
 #include <linux/user.h>
+#include <linux/security.h>
 
 #include <asm/pgtable.h>
 #include <asm/processor.h>
@@ -1100,6 +1101,9 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data,
 		/* are we already being traced? */
 		if (current->ptrace & PT_PTRACED)
 			goto out;
+		ret = security_ops->ptrace(current->parent, current);
+		if (ret)
+			goto out;
 		current->ptrace |= PT_PTRACED;
 		ret = 0;
 		goto out;