19 строки
422 B
C
19 строки
422 B
C
|
#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
|