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);
DESCRIPTIONcacheflush() 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 VALUEcacheflush() 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 parameter is not one of ICACHE, DCACHE, or BCACHE.
BUGS
The current implementation ignores the addr and nbytes arguments.
Therefore, the whole cache is always 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 1995-06-27 CACHEFLUSH(2)