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:
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.
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.
This Linux-specific system call is available only 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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