cacheflush man page on YellowDog

cacheflush man page on YellowDog

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

NAME
       cacheflush - flush contents of instruction and/or data cache

SYNOPSIS
       #include <asm/cachectl.h>

       int cacheflush(char *addr, int nbytes, int cache);

DESCRIPTION
       cacheflush()  flushes contents of indicated cache(s) for user addresses
       in the range addr to (addr+nbytes-1). Cache may be one of:

       ICACHE Flush the instruction cache.

       DCACHE Write back to memory and invalidate  the	affected  valid	 cache
	      lines.

       BCACHE Same as (ICACHE|DCACHE).

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

ERRORS
       EFAULT Some or all of the address range addr to (addr+nbytes-1) is  not
	      accessible.

       EINVAL cache parameter is not one of ICACHE, DCACHE, or BCACHE.

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

NOTE
       This system call is only available on MIPS based	 systems.   It	should
       not be used in programs intended to be portable.

Linux 2.0.32			  1995-06-27			 CACHEFLUSH(2)

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