CACHEFLUSH (2)
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
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.
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