1CACHEFLUSH(2)              Linux Programmer's Manual             CACHEFLUSH(2)
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NAME

6       cacheflush - flush contents of instruction and/or data cache
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SYNOPSIS

9       #include <asm/cachectl.h>
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11       int cacheflush(char *addr, int nbytes, int cache);
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DESCRIPTION

14       cacheflush()  flushes contents of indicated cache(s) for user addresses
15       in the range addr to (addr+nbytes-1). Cache may be one of:
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17       ICACHE Flush the instruction cache.
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19       DCACHE Write back to memory and invalidate  the  affected  valid  cache
20              lines.
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22       BCACHE Same as (ICACHE|DCACHE).
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RETURN VALUE

25       cacheflush()  returns  0  on  success  or  -1  on  error. If errors are
26       detected, errno will indicate the error.
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ERRORS

29       EFAULT Some or all of the address range addr to (addr+nbytes-1) is  not
30              accessible.
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32       EINVAL cache parameter is not one of ICACHE, DCACHE, or BCACHE.
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BUGS

35       The  current  implementation  ignores  the  addr  and nbytes arguments.
36       Therefore, the whole cache is always flushed.
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NOTE

39       This system call is only available on MIPS based  systems.   It  should
40       not be used in programs intended to be portable.
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44Linux 2.0.32                      1995-06-27                     CACHEFLUSH(2)