[mirror_ubuntu-artful-kernel.git] / arch / x86 / include / asm / edac.h

#ifndef _ASM_X86_EDAC_H
#define _ASM_X86_EDAC_H

/* ECC atomic, DMA, SMP and interrupt safe scrub function */

static inline void atomic_scrub(void *va, u32 size)
{
	u32 i, *virt_addr = va;

	/*
	 * Very carefully read and write to memory atomically so we
	 * are interrupt, DMA and SMP safe.
	 */
	for (i = 0; i < size / 4; i++, virt_addr++)
		asm volatile("lock; addl $0, %0"::"m" (*virt_addr));
}

#endif /* _ASM_X86_EDAC_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_EDAC_H
1965aae3 PA	2	#define _ASM_X86_EDAC_H
1f7afb08 TG	3
	4	/* ECC atomic, DMA, SMP and interrupt safe scrub function */
	5
451dd983	6	static inline void atomic_scrub(void *va, u32 size)
1f7afb08 TG	7	{
	8	u32 i, *virt_addr = va;
	9
	10	/*
	11	* Very carefully read and write to memory atomically so we
	12	* are interrupt, DMA and SMP safe.
	13	*/
	14	for (i = 0; i < size / 4; i++, virt_addr++)
451dd983	15	asm volatile("lock; addl $0, %0"::"m" (*virt_addr));
1f7afb08 TG	16	}
1f7afb08 TG	17
1965aae3	18	#endif /* _ASM_X86_EDAC_H */