include/asm-x86_64/edac.h

   1 #ifndef ASM_EDAC_H
   2 #define ASM_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         unsigned int *virt_addr = va;
   9         u32 i;
  10
  11         for (i = 0; i < size / 4; i++, virt_addr++)
  12                 /* Very carefully read and write to memory atomically
  13                  * so we are interrupt, DMA and SMP safe.
  14                  */
  15                 __asm__ __volatile__("lock; addl $0, %0"::"m"(*virt_addr));
  16 }
  17
  18 #endif