mirror of https://gitee.com/openkylin/linux.git
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
|
/*
|
||
|
|
* Copied from the kernel sources to tools/perf/:
|
||
|
|
*
|
||
|
|
* Generic barrier definitions, originally based on MN10300 definitions.
|
||
|
|
*
|
||
|
|
* It should be possible to use these on really simple architectures,
|
||
|
|
* but it serves more as a starting point for new ports.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
||
|
|
* Written by David Howells (dhowells@redhat.com)
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public Licence
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the Licence, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
#ifndef __TOOLS_LINUX_ASM_GENERIC_BARRIER_H
|
||
|
|
#define __TOOLS_LINUX_ASM_GENERIC_BARRIER_H
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
|
||
|
|
#include <linux/compiler.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Force strict CPU ordering. And yes, this is required on UP too when we're
|
||
|
|
* talking to devices.
|
||
|
|
*
|
||
|
|
* Fall back to compiler barriers if nothing better is provided.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef mb
|
||
|
|
#define mb() barrier()
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef rmb
|
||
|
|
#define rmb() mb()
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef wmb
|
||
|
|
#define wmb() mb()
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* !__ASSEMBLY__ */
|
||
|
|
#endif /* __TOOLS_LINUX_ASM_GENERIC_BARRIER_H */
|