cacheflush(2) System Calls Manual cacheflush(2)Name
cacheflush - flush the instruction cache, data cache, or both
Syntax
#include <mips/cachectl.h>
cacheflush(addr, nbytes, cache)
char *addr;
int nbytes, cache;
Description
Flushes contents of indicated caches for user addresses in the range of addr to (addr+nbytes-1). The cache parameter is one of the follow-
ing:
ICACHE Flush only the instruction cache.
DCACHE Flush only the data cache.
BCACHE Flush both the instruction and data caches.
Return Values
The system call returns 0 when errors are not detected. If errors are detected, the system call returns -1 with the error cause indicated
in errno.
Diagnostics
[EFAULT] Some or all of the address range in the addr to (addr+nbytes-1) are not accessible.
[EINVAL] The cache parameter is not ICACHE, DCACHE, or BCACHE.
4th Berkeley Distribution RISC cacheflush(2)
Check Out this Related Man Page
CACHEFLUSH(2) Linux Programmer's Manual CACHEFLUSH(2)NAME
cacheflush - flush contents of instruction and/or data cache
SYNOPSIS
#include <asm/cachectl.h>
int cacheflush(char *addr, int nbytes, int cache);
DESCRIPTION
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).
RETURN VALUE
cacheflush() returns 0 on success or -1 on error. If errors are detected, errno will indicate the error.
ERRORS
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.
CONFORMING TO
This Linux-specific system call is only available on MIPS based systems. It should not be used in programs intended to be portable.
BUGS
The current implementation ignores the addr and nbytes arguments. Therefore, the whole cache is always flushed.
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2007-05-26 CACHEFLUSH(2)
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