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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-12 11:53:43 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-12 11:53:43 +0100 |
| commit | e18d7af85296cb6999aae171e8a9f8612bea5ae0 (patch) | |
| tree | 97a675ecc17bef2f710c50f5ea2a480df0e362c0 /arch/x86/include/asm/edac.h | |
| parent | 3555105333ae55414d0fe051557bd7dc590f5255 (diff) | |
| parent | 8b1fae4e4200388b64dd88065639413cb3f1051c (diff) | |
| download | linux-e18d7af85296cb6999aae171e8a9f8612bea5ae0.tar.gz | |
Merge commit 'v2.6.28-rc8' into x86/mm
Diffstat (limited to 'arch/x86/include/asm/edac.h')
| -rw-r--r-- | arch/x86/include/asm/edac.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/include/asm/edac.h b/arch/x86/include/asm/edac.h new file mode 100644 index 000000000000..e9b57ecc70c5 --- /dev/null +++ b/arch/x86/include/asm/edac.h @@ -0,0 +1,18 @@ +#ifndef _ASM_X86_EDAC_H +#define _ASM_X86_EDAC_H + +/* ECC atomic, DMA, SMP and interrupt safe scrub function */ + +static inline void atomic_scrub(void *va, u32 size) +{ + u32 i, *virt_addr = va; + + /* + * Very carefully read and write to memory atomically so we + * are interrupt, DMA and SMP safe. + */ + for (i = 0; i < size / 4; i++, virt_addr++) + asm volatile("lock; addl $0, %0"::"m" (*virt_addr)); +} + +#endif /* _ASM_X86_EDAC_H */ |