4 /* ECC atomic, DMA, SMP and interrupt safe scrub function */
6 static inline void atomic_scrub(void *va, u32 size)
8 unsigned long *virt_addr = va;
12 for (i = 0; i < size / sizeof(unsigned long); i++, virt_addr++) {
15 * Very carefully read and write to memory atomically
16 * so we are interrupt, DMA and SMP safe.
18 * Intel: asm("lock; addl $0, %0"::"m"(*virt_addr));
21 __asm__ __volatile__ (
23 "1: ll %0, %1 # atomic_add \n"
24 " ll %0, %1 # atomic_add \n"
29 : "=&r" (temp), "=m" (*virt_addr)