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 systems. 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

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