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 following:

ICACHE Flush only the instruction cache. 

DCACHE Flush only the data cache. 

BCACHE Flush both the instruction and data caches. 

Return Values

The cacheflush system call returns 0 when errors are not detected.  If errors are detected, the cacheflush 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.