mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 18:14:07 +08:00
c6e39db1d0
From the kernel's include/asm-generic/barrier.h, will be used by the sh barrier.h implementation. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-emjznw0rjsmfyx2wfixss1gv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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 */
|