[mirror_ubuntu-zesty-kernel.git] / include / asm-i386 / edac.h

#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 long *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
Commit	Line	Data
da9bb1d2 AC	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 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