Linux Kernel  3.7.1
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cache.c
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1 /* MN10300 Cache flushing routines
2  *
3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4  * Written by David Howells ([email protected])
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/module.h>
12 #include <linux/mm.h>
13 #include <linux/mman.h>
14 #include <linux/threads.h>
15 #include <asm/page.h>
16 #include <asm/pgtable.h>
17 #include <asm/processor.h>
18 #include <asm/cacheflush.h>
19 #include <asm/io.h>
20 #include <asm/uaccess.h>
21 #include <asm/smp.h>
22 #include "cache-smp.h"
23 
32 
33 #ifdef CONFIG_MN10300_CACHE_WBACK
42 #endif
43 
44 /*
45  * allow userspace to flush the instruction cache
46  */
47 asmlinkage long sys_cacheflush(unsigned long start, unsigned long end)
48 {
49  if (end < start)
50  return -EINVAL;
51 
52  flush_icache_range(start, end);
53  return 0;
54 }