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62bdb288 DH |
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 | */ | |
16 | asmlinkage long sys_cacheflush(unsigned long start, unsigned long end) | |
17 | { | |
18 | if (end < start) | |
19 | return -EINVAL; | |
20 | return 0; | |
21 | } |