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CACHEFLUSH (2) | System calls | Unix Manual Pages | :man

NAME

cacheflush - flush contents of instruction and/or data cache

CONTENTS

Synopsis
Description
Errors
Bugs
Note

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.

"Linux 2.0.32" CACHEFLUSH (2) 1995-06-27
shtml">manServer 1.07 from cacheflush.2 using man macros.
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