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Philippe Troin
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Manpage of CACHEFLUSH

CACHEFLUSH

Section: Linux Programmer's Manual (2)
Updated: 1995-06-27
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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

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

BUGS

The current implementation ignores the addr and nbytes parameters. Therefore always the whole cache is flushed.

NOTE

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

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
BUGS
NOTE

This document was created by man2html, using the manual pages.
Time: 03:28:55 GMT, April 27, 2024