9 More Discussions You Might Find Interesting
1. UNIX and Linux Applications
Anyone know anything about "Advanced Plus Operating Environment".
Preferably release 10 Revision 522Gcd probably dated 2003. (4 Replies)
Discussion started by: jgt
4 Replies
2. UNIX for Advanced & Expert Users
Can we know the operating given the IP address or DNS of the host.
All I have is
file://myserver/myapp (4 Replies)
Discussion started by: mohtashims
4 Replies
3. UNIX for Advanced & Expert Users
Hello All,
I want to install Linux on my machine, so please tell me one thing which is the best to install-
1.)Red Hat
2.)Cent OS
3.)Red Hat
4.)Ubuntu
5.)Fedora
except that if there is any please tell me. (1 Reply)
Discussion started by: parthmittal2007
1 Replies
4. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Write a C program that accepts 3 parameters. Each parameter indicates the quantity of product to be
produced.... (0 Replies)
Discussion started by: paradise
0 Replies
5. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Write a C program that accepts 3 parameters. Each parameter indicates the quantity of product to be
produced.... (1 Reply)
Discussion started by: paradise
1 Replies
6. Shell Programming and Scripting
Write a C program that accepts 3 parameters. Each parameter indicates the quantity of product to be
produced. Each product will be produced in different production line. Ready products will be placed
in a buffer area located at the end of each production line. Packaging workers will pack the... (1 Reply)
Discussion started by: paradise
1 Replies
7. UNIX for Dummies Questions & Answers
Which is much more powerful as an operating system:
1. Windows 2000
2. Windows 98
3. Windows XP
4. Windows ME
5. Unix
6. Linux
and why is it much more powerful than the other operating systems that i have mentioned.
thanks for your info... (1 Reply)
Discussion started by: alecks1975
1 Replies
8. UNIX for Dummies Questions & Answers
Can anyone give me info on networking features of the Unix Operating System please.
Thanks in advance (1 Reply)
Discussion started by: WaveZero
1 Replies
9. UNIX for Dummies Questions & Answers
I need the Unix operating system on disc as im new to unix. Im studying unix and x windows next year at Sheffield University and would like to get a head start.
Any suggestions would be appreciated (2 Replies)
Discussion started by: jeffersno1
2 Replies
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 (but see BUGS).
CONFORMING TO
Historically, this system call was available on all MIPS UNIX variants including RISC/os, IRIX, Ultrix, NetBSD, OpenBSD, and FreeBSD (and
also on some non-UNIX MIPS operating systems), so that the existence of this call in MIPS operating systems is a de-facto standard.
Caveat
cacheflush() should not be used in programs intended to be portable. On Linux, this call first appeared on the MIPS architecture, but
nowadays, Linux provides a cacheflush() system call on some other architectures, but with different arguments.
BUGS
Linux kernels older than version 2.6.11 ignore the addr and nbytes arguments, making this function fairly expensive. Therefore, the whole
cache is always flushed.
This function always behaves as if BCACHE has been passed for the cache argument and does not do any error checking on the cache argument.
COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Linux 2017-09-15 CACHEFLUSH(2)
