1 #ifndef _ASM_X86_EDAC_H 2 #define _ASM_X86_EDAC_H 3 4 /* ECC atomic, DMA, SMP and interrupt safe scrub function */ 5 6 static inline void atomic_scrub(void *va, u32 size) 7 { 8 u32 i, *virt_addr = va; 9 10 /* 11 * Very carefully read and write to memory atomically so we 12 * are interrupt, DMA and SMP safe. 13 */ 14 for (i = 0; i < size / 4; i++, virt_addr++) 15 asm volatile("lock; addl $0, %0"::"m" (*virt_addr)); 16 } 17 18 #endif /* _ASM_X86_EDAC_H */ 19