diff options
| author | Len Brown <len.brown@intel.com> | 2006-01-27 17:18:29 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2006-01-27 17:18:29 -0500 |
| commit | 292dd876ee765c478b27c93cc51e93a558ed58bf (patch) | |
| tree | 5b740e93253295baee2a9c414a6c66d03d44a9ef /include/asm-x86_64/edac.h | |
| parent | d4ec6c7cc9a15a7a529719bc3b84f46812f9842e (diff) | |
| parent | 9fdb62af92c741addbea15545f214a6e89460865 (diff) | |
Pull release into acpica branch
Diffstat (limited to 'include/asm-x86_64/edac.h')
| -rw-r--r-- | include/asm-x86_64/edac.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/asm-x86_64/edac.h b/include/asm-x86_64/edac.h new file mode 100644 index 00000000000..cad1cd42b4e --- /dev/null +++ b/include/asm-x86_64/edac.h @@ -0,0 +1,18 @@ +#ifndef ASM_EDAC_H +#define ASM_EDAC_H + +/* ECC atomic, DMA, SMP and interrupt safe scrub function */ + +static __inline__ void atomic_scrub(void *va, u32 size) +{ + unsigned int *virt_addr = va; + u32 i; + + for (i = 0; i < size / 4; i++, virt_addr++) + /* Very carefully read and write to memory atomically + * so we are interrupt, DMA and SMP safe. + */ + __asm__ __volatile__("lock; addl $0, %0"::"m"(*virt_addr)); +} + +#endif |