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| author | Michal Simek <monstr@monstr.eu> | 2012-03-30 12:10:03 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2012-03-30 12:10:03 +0200 |
| commit | 6a4770e335bd4df0a4577146f76e116ab6e23f40 (patch) | |
| tree | 305056c20b6ccf3a4fed00e9e32f3a1dd039cd70 /arch/xtensa/include/asm/barrier.h | |
| parent | ac64a9caa55bdfd8d24784f25c68cb7919ddabe3 (diff) | |
| parent | f52b69f86e27903d6896ed5fa7cd280fec8de532 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next
Diffstat (limited to 'arch/xtensa/include/asm/barrier.h')
| -rw-r--r-- | arch/xtensa/include/asm/barrier.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/barrier.h b/arch/xtensa/include/asm/barrier.h new file mode 100644 index 000000000000..55707a8009d3 --- /dev/null +++ b/arch/xtensa/include/asm/barrier.h @@ -0,0 +1,29 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 - 2005 Tensilica Inc. + */ + +#ifndef _XTENSA_SYSTEM_H +#define _XTENSA_SYSTEM_H + +#define smp_read_barrier_depends() do { } while(0) +#define read_barrier_depends() do { } while(0) + +#define mb() barrier() +#define rmb() mb() +#define wmb() mb() + +#ifdef CONFIG_SMP +#error smp_* not defined +#else +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() +#endif + +#define set_mb(var, value) do { var = value; mb(); } while (0) + +#endif /* _XTENSA_SYSTEM_H */ |