1/* Handle the cache being disabled 2 * 3 * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public Licence 8 * as published by the Free Software Foundation; either version 9 * 2 of the Licence, or (at your option) any later version. 10 */ 11#include <linux/mm.h> 12 13/* 14 * allow userspace to flush the instruction cache 15 */ 16asmlinkage long sys_cacheflush(unsigned long start, unsigned long end) 17{ 18 if (end < start) 19 return -EINVAL; 20 return 0; 21} 22