cacheflush — flush contents of instruction and/or data cache
#include <asm/cachectl.h>
int
cacheflush( |
char * | addr, |
int | nbytes, | |
int | cache) ; |
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)
.
cacheflush
() returns 0 on
success or −1 on error. If errors are detected,
errno
will indicate the
error.
Some or all of the address range addr to (addr+nbytes-1) is not accessible.
cache parameter is not one of ICACHE, DCACHE, or BCACHE.
The current implementation ignores the addr
and nbytes
arguments. Therefore,
the whole cache is always flushed.
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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