|
Lines 447-453
static void memory_bm_free(struct memory
Link Here
|
| 447 |
* of @bm->cur_zone_bm are updated. |
447 |
* of @bm->cur_zone_bm are updated. |
| 448 |
*/ |
448 |
*/ |
| 449 |
|
449 |
|
| 450 |
static void memory_bm_find_bit(struct memory_bitmap *bm, unsigned long pfn, |
450 |
static int memory_bm_find_bit(struct memory_bitmap *bm, unsigned long pfn, |
| 451 |
void **addr, unsigned int *bit_nr) |
451 |
void **addr, unsigned int *bit_nr) |
| 452 |
{ |
452 |
{ |
| 453 |
struct zone_bitmap *zone_bm; |
453 |
struct zone_bitmap *zone_bm; |
|
Lines 461-467
static void memory_bm_find_bit(struct me
Link Here
|
| 461 |
while (pfn < zone_bm->start_pfn || pfn >= zone_bm->end_pfn) { |
461 |
while (pfn < zone_bm->start_pfn || pfn >= zone_bm->end_pfn) { |
| 462 |
zone_bm = zone_bm->next; |
462 |
zone_bm = zone_bm->next; |
| 463 |
|
463 |
|
| 464 |
BUG_ON(!zone_bm); |
464 |
if (!zone_bm) |
|
|
465 |
return -EFAULT; |
| 465 |
} |
466 |
} |
| 466 |
bm->cur.zone_bm = zone_bm; |
467 |
bm->cur.zone_bm = zone_bm; |
| 467 |
} |
468 |
} |
|
Lines 479-501
static void memory_bm_find_bit(struct me
Link Here
|
| 479 |
pfn -= bb->start_pfn; |
480 |
pfn -= bb->start_pfn; |
| 480 |
*bit_nr = pfn % BM_BITS_PER_CHUNK; |
481 |
*bit_nr = pfn % BM_BITS_PER_CHUNK; |
| 481 |
*addr = bb->data + pfn / BM_BITS_PER_CHUNK; |
482 |
*addr = bb->data + pfn / BM_BITS_PER_CHUNK; |
|
|
483 |
return 0; |
| 482 |
} |
484 |
} |
| 483 |
|
485 |
|
| 484 |
static void memory_bm_set_bit(struct memory_bitmap *bm, unsigned long pfn) |
486 |
static void memory_bm_set_bit(struct memory_bitmap *bm, unsigned long pfn) |
| 485 |
{ |
487 |
{ |
| 486 |
void *addr; |
488 |
void *addr; |
| 487 |
unsigned int bit; |
489 |
unsigned int bit; |
|
|
490 |
int error; |
| 488 |
|
491 |
|
| 489 |
memory_bm_find_bit(bm, pfn, &addr, &bit); |
492 |
error = memory_bm_find_bit(bm, pfn, &addr, &bit); |
|
|
493 |
BUG_ON(error); |
| 490 |
set_bit(bit, addr); |
494 |
set_bit(bit, addr); |
| 491 |
} |
495 |
} |
| 492 |
|
496 |
|
|
|
497 |
static int mem_bm_set_bit_check(struct memory_bitmap *bm, unsigned long pfn) |
| 498 |
{ |
| 499 |
void *addr; |
| 500 |
unsigned int bit; |
| 501 |
int error; |
| 502 |
|
| 503 |
error = memory_bm_find_bit(bm, pfn, &addr, &bit); |
| 504 |
if (!error) |
| 505 |
set_bit(bit, addr); |
| 506 |
return error; |
| 507 |
} |
| 508 |
|
| 493 |
static void memory_bm_clear_bit(struct memory_bitmap *bm, unsigned long pfn) |
509 |
static void memory_bm_clear_bit(struct memory_bitmap *bm, unsigned long pfn) |
| 494 |
{ |
510 |
{ |
| 495 |
void *addr; |
511 |
void *addr; |
| 496 |
unsigned int bit; |
512 |
unsigned int bit; |
|
|
513 |
int error; |
| 497 |
|
514 |
|
| 498 |
memory_bm_find_bit(bm, pfn, &addr, &bit); |
515 |
error = memory_bm_find_bit(bm, pfn, &addr, &bit); |
|
|
516 |
BUG_ON(error); |
| 499 |
clear_bit(bit, addr); |
517 |
clear_bit(bit, addr); |
| 500 |
} |
518 |
} |
| 501 |
|
519 |
|
|
Lines 503-510
static int memory_bm_test_bit(struct mem
Link Here
|
| 503 |
{ |
521 |
{ |
| 504 |
void *addr; |
522 |
void *addr; |
| 505 |
unsigned int bit; |
523 |
unsigned int bit; |
|
|
524 |
int error; |
| 506 |
|
525 |
|
| 507 |
memory_bm_find_bit(bm, pfn, &addr, &bit); |
526 |
error = memory_bm_find_bit(bm, pfn, &addr, &bit); |
|
|
527 |
BUG_ON(error); |
| 508 |
return test_bit(bit, addr); |
528 |
return test_bit(bit, addr); |
| 509 |
} |
529 |
} |
| 510 |
|
530 |
|
|
Lines 710-716
static void mark_nosave_pages(struct mem
Link Here
|
| 710 |
|
730 |
|
| 711 |
for (pfn = region->start_pfn; pfn < region->end_pfn; pfn++) |
731 |
for (pfn = region->start_pfn; pfn < region->end_pfn; pfn++) |
| 712 |
if (pfn_valid(pfn)) |
732 |
if (pfn_valid(pfn)) |
| 713 |
memory_bm_set_bit(bm, pfn); |
733 |
mem_bm_set_bit_check(bm, pfn); |
| 714 |
} |
734 |
} |
| 715 |
} |
735 |
} |
| 716 |
|
736 |
|