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| author | Tony Lindgren | 2015-07-06 14:33:17 +0200 |
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| committer | Tony Lindgren | 2015-07-06 14:33:17 +0200 |
| commit | ae745302c0a3e2b5b768690f631fc14db44467e7 (patch) | |
| tree | 1db4d210a7419286b447dc09fa7400a561d55f42 /tools/include/asm-generic/barrier.h | |
| parent | ARM: OMAP2+: Remove unnessary return statement from the void function, omap2_... (diff) | |
| parent | ARM: dts: am4372.dtsi: disable rfbi (diff) | |
| download | kernel-qcow2-linux-ae745302c0a3e2b5b768690f631fc14db44467e7.tar.gz kernel-qcow2-linux-ae745302c0a3e2b5b768690f631fc14db44467e7.tar.xz kernel-qcow2-linux-ae745302c0a3e2b5b768690f631fc14db44467e7.zip | |
Merge branch 'fixes-rc1' into omap-for-v4.2/fixes
Diffstat (limited to 'tools/include/asm-generic/barrier.h')
| -rw-r--r-- | tools/include/asm-generic/barrier.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/tools/include/asm-generic/barrier.h b/tools/include/asm-generic/barrier.h new file mode 100644 index 000000000000..47b933903eaf --- /dev/null +++ b/tools/include/asm-generic/barrier.h @@ -0,0 +1,44 @@ +/* + * 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 */ |