NAME

cacheflush − flush contents of instruction and/or data cache

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 instruction and data caches. 

RETURN VALUE

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 ICACHE, DCACHE, or BCACHE. 

System Calls