-#ifndef ASM_X86__PRCTL_H
-#define ASM_X86__PRCTL_H
+#ifndef _ASM_X86_PRCTL_H
+#define _ASM_X86_PRCTL_H
#define ARCH_SET_GS 0x1001
#define ARCH_SET_FS 0x1002
#define ARCH_GET_FS 0x1003
#define ARCH_GET_GS 0x1004
+#ifdef CONFIG_X86_64
+extern long sys_arch_prctl(int, unsigned long);
+#endif /* CONFIG_X86_64 */
-#endif /* ASM_X86__PRCTL_H */
+#endif /* _ASM_X86_PRCTL_H */