cacheflush — flush contents of instruction and/or data cache
#include <asm/cachectl.h>
int
cacheflush( |
char * | addr, |
| int | nbytes, | |
| int | cache); |
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:
ICACHEFlush the instruction cache.
DCACHEWrite back to memory and invalidate the affected valid cache lines.
BCACHESame 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 is not
one of ICACHE,
DCACHE, or BCACHE.
This Linux-specific system call is only available on MIPS based systems. It should not be used in programs intended to be portable.
The current implementation ignores the addr and nbytes arguments. Therefore,
the whole cache is always flushed.
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