blob: 3e7dd0ab68ce2ada911bcbceffe31380334dda83 [file] [log] [blame]
Alan Coxda9bb1d2006-01-18 17:44:13 -08001#ifndef ASM_EDAC_H
2#define ASM_EDAC_H
3
4/* ECC atomic, DMA, SMP and interrupt safe scrub function */
5
6static __inline__ void atomic_scrub(void *va, u32 size)
7{
8 unsigned long *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