cacheflush man page on ElementaryOS

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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  the  contents  of the indicated cache(s) for the
       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 is not one of ICACHE, DCACHE, or BCACHE.

CONFORMING TO
       This Linux-specific system call is available only  on  MIPS-based  sys‐
       tems.  It should not be used in programs intended to be portable.

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

COLOPHON
       This page is part of release 3.54 of the Linux  man-pages  project.   A
       description  of	the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux				  2007-05-26			 CACHEFLUSH(2)
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