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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/avr32/include/asm/barrier.h | |
| parent | microblaze: Fix stack usage in PAGE_SIZE copy_tofrom_user (diff) | |
| parent | Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh (diff) | |
| download | linux-6a4770e335bd4df0a4577146f76e116ab6e23f40.tar.xz linux-6a4770e335bd4df0a4577146f76e116ab6e23f40.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next
Diffstat (limited to 'arch/avr32/include/asm/barrier.h')
| -rw-r--r-- | arch/avr32/include/asm/barrier.h | 27 |
1 files changed, 27 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..808001c9cf8c --- /dev/null +++ b/arch/avr32/include/asm/barrier.h @@ -0,0 +1,27 @@ +/* + * 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 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 */ |