summaryrefslogtreecommitdiffstats
path: root/include/asm-x86_64/edac.h
blob: cad1cd42b4ee48972bfe63ff498279738d041d53 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
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
OpenPOWER on IntegriCloud