cacheflush — flush contents of instruction and/or data cache
#include <asm/cachectl.h>
int
cacheflush( |
char * | addr, |
| int | nbytes, | |
| int | cache); |
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:
ICACHEFlush the instruction cache.
DCACHEWrite back to memory and invalidate the affected valid cache lines.
BCACHESame as (ICACHE|DCACHE).
cacheflush() returns 0 on
success or −1 on error. If errors are detected,
errno will indicate the
error.
Some or all of the address range addr to (addr+nbytes-1) is not
accessible.
cache is not
one of ICACHE,
DCACHE, or BCACHE.
This Linux-specific system call is only available on MIPS based systems. It should not be used in programs intended to be portable.
The current implementation ignores the addr and nbytes arguments. Therefore,
the whole cache is always flushed.
This page is part of release 2.79 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/.
|
Written by Ralf Baechle (ralfwaldorf-gmbh.de), Copyright (c) 1994, 1995 Waldorf GMBH This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, including intermediate and printed output. This manual is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this manual; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |