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| author | David S. Miller <davem@davemloft.net> | 2012-04-10 22:30:45 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-10 22:30:45 +0400 |
| commit | 06eb4eafbdc0796d741d139a44f1253278da8611 (patch) | |
| tree | fbdb44317130c371928154c9e6903e699fe2b995 /arch/avr32/include/asm/barrier.h | |
| parent | 32ed53b83ea5ec26a4dba90e18f5e0ff6c71eb48 (diff) | |
| parent | f68e556e23d1a4176b563bcb25d8baf2c5313f91 (diff) | |
| download | linux-06eb4eafbdc0796d741d139a44f1253278da8611.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'arch/avr32/include/asm/barrier.h')
| -rw-r--r-- | arch/avr32/include/asm/barrier.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/avr32/include/asm/barrier.h b/arch/avr32/include/asm/barrier.h new file mode 100644 index 000000000000..0961275373db --- /dev/null +++ b/arch/avr32/include/asm/barrier.h @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2004-2006 Atmel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_AVR32_BARRIER_H +#define __ASM_AVR32_BARRIER_H + +#define nop() asm volatile("nop") + +#define mb() asm volatile("" : : : "memory") +#define rmb() mb() +#define wmb() asm volatile("sync 0" : : : "memory") +#define read_barrier_depends() do { } while(0) +#define set_mb(var, value) do { var = value; mb(); } while(0) + +#ifdef CONFIG_SMP +# error "The AVR32 port does not support SMP" +#else +# define smp_mb() barrier() +# define smp_rmb() barrier() +# define smp_wmb() barrier() +# define smp_read_barrier_depends() do { } while(0) +#endif + + +#endif /* __ASM_AVR32_BARRIER_H */ |