Linux 2.6 - man page for cacheflush (linux section 2)
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CACHEFLUSH(2) Linux Programmer's Manual CACHEFLUSH(2)
cacheflush - flush contents of instruction and/or data cache
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.
This page is part of release 3.55 of the Linux man-pages project. A description of the
project, and information about reporting bugs, can be found at
Linux 2007-05-26 CACHEFLUSH(2)
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