File: edac.h

package info (click to toggle)
linux-kernel-headers 2.6.18-7
  • links: PTS
  • area: main
  • in suites: etch, etch-m68k
  • size: 38,648 kB
  • ctags: 300,882
  • sloc: ansic: 461,192; asm: 1,555; cpp: 340; makefile: 312; sh: 110
file content (18 lines) | stat: -rw-r--r-- 422 bytes parent folder | download | duplicates (4) 
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