diff options
-rw-r--r-- | arch/arm/mm/init.c | 71 | ||||
-rw-r--r-- | arch/arm/mm/mm-armv.c | 72 |
2 files changed, 65 insertions, 78 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index c08710b1ff02..6dcb23d64bf5 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c | |||
@@ -522,6 +522,69 @@ static inline void free_area(unsigned long addr, unsigned long end, char *s) | |||
522 | printk(KERN_INFO "Freeing %s memory: %dK\n", s, size); | 522 | printk(KERN_INFO "Freeing %s memory: %dK\n", s, size); |
523 | } | 523 | } |
524 | 524 | ||
525 | static inline void | ||
526 | free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn) | ||
527 | { | ||
528 | struct page *start_pg, *end_pg; | ||
529 | unsigned long pg, pgend; | ||
530 | |||
531 | /* | ||
532 | * Convert start_pfn/end_pfn to a struct page pointer. | ||
533 | */ | ||
534 | start_pg = pfn_to_page(start_pfn); | ||
535 | end_pg = pfn_to_page(end_pfn); | ||
536 | |||
537 | /* | ||
538 | * Convert to physical addresses, and | ||
539 | * round start upwards and end downwards. | ||
540 | */ | ||
541 | pg = PAGE_ALIGN(__pa(start_pg)); | ||
542 | pgend = __pa(end_pg) & PAGE_MASK; | ||
543 | |||
544 | /* | ||
545 | * If there are free pages between these, | ||
546 | * free the section of the memmap array. | ||
547 | */ | ||
548 | if (pg < pgend) | ||
549 | free_bootmem_node(NODE_DATA(node), pg, pgend - pg); | ||
550 | } | ||
551 | |||
552 | /* | ||
553 | * The mem_map array can get very big. Free the unused area of the memory map. | ||
554 | */ | ||
555 | static void __init free_unused_memmap_node(int node, struct meminfo *mi) | ||
556 | { | ||
557 | unsigned long bank_start, prev_bank_end = 0; | ||
558 | unsigned int i; | ||
559 | |||
560 | /* | ||
561 | * [FIXME] This relies on each bank being in address order. This | ||
562 | * may not be the case, especially if the user has provided the | ||
563 | * information on the command line. | ||
564 | */ | ||
565 | for (i = 0; i < mi->nr_banks; i++) { | ||
566 | if (mi->bank[i].size == 0 || mi->bank[i].node != node) | ||
567 | continue; | ||
568 | |||
569 | bank_start = mi->bank[i].start >> PAGE_SHIFT; | ||
570 | if (bank_start < prev_bank_end) { | ||
571 | printk(KERN_ERR "MEM: unordered memory banks. " | ||
572 | "Not freeing memmap.\n"); | ||
573 | break; | ||
574 | } | ||
575 | |||
576 | /* | ||
577 | * If we had a previous bank, and there is a space | ||
578 | * between the current bank and the previous, free it. | ||
579 | */ | ||
580 | if (prev_bank_end && prev_bank_end != bank_start) | ||
581 | free_memmap(node, prev_bank_end, bank_start); | ||
582 | |||
583 | prev_bank_end = (mi->bank[i].start + | ||
584 | mi->bank[i].size) >> PAGE_SHIFT; | ||
585 | } | ||
586 | } | ||
587 | |||
525 | /* | 588 | /* |
526 | * mem_init() marks the free areas in the mem_map and tells us how much | 589 | * mem_init() marks the free areas in the mem_map and tells us how much |
527 | * memory is free. This is done after various parts of the system have | 590 | * memory is free. This is done after various parts of the system have |
@@ -540,16 +603,12 @@ void __init mem_init(void) | |||
540 | max_mapnr = virt_to_page(high_memory) - mem_map; | 603 | max_mapnr = virt_to_page(high_memory) - mem_map; |
541 | #endif | 604 | #endif |
542 | 605 | ||
543 | /* | ||
544 | * We may have non-contiguous memory. | ||
545 | */ | ||
546 | if (meminfo.nr_banks != 1) | ||
547 | create_memmap_holes(&meminfo); | ||
548 | |||
549 | /* this will put all unused low memory onto the freelists */ | 606 | /* this will put all unused low memory onto the freelists */ |
550 | for_each_online_node(node) { | 607 | for_each_online_node(node) { |
551 | pg_data_t *pgdat = NODE_DATA(node); | 608 | pg_data_t *pgdat = NODE_DATA(node); |
552 | 609 | ||
610 | free_unused_memmap_node(node, &meminfo); | ||
611 | |||
553 | if (pgdat->node_spanned_pages != 0) | 612 | if (pgdat->node_spanned_pages != 0) |
554 | totalram_pages += free_all_bootmem_node(pgdat); | 613 | totalram_pages += free_all_bootmem_node(pgdat); |
555 | } | 614 | } |
diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c index d79864a0dfa6..052ab443ec4e 100644 --- a/arch/arm/mm/mm-armv.c +++ b/arch/arm/mm/mm-armv.c | |||
@@ -697,75 +697,3 @@ void __init iotable_init(struct map_desc *io_desc, int nr) | |||
697 | for (i = 0; i < nr; i++) | 697 | for (i = 0; i < nr; i++) |
698 | create_mapping(io_desc + i); | 698 | create_mapping(io_desc + i); |
699 | } | 699 | } |
700 | |||
701 | static inline void | ||
702 | free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn) | ||
703 | { | ||
704 | struct page *start_pg, *end_pg; | ||
705 | unsigned long pg, pgend; | ||
706 | |||
707 | /* | ||
708 | * Convert start_pfn/end_pfn to a struct page pointer. | ||
709 | */ | ||
710 | start_pg = pfn_to_page(start_pfn); | ||
711 | end_pg = pfn_to_page(end_pfn); | ||
712 | |||
713 | /* | ||
714 | * Convert to physical addresses, and | ||
715 | * round start upwards and end downwards. | ||
716 | */ | ||
717 | pg = PAGE_ALIGN(__pa(start_pg)); | ||
718 | pgend = __pa(end_pg) & PAGE_MASK; | ||
719 | |||
720 | /* | ||
721 | * If there are free pages between these, | ||
722 | * free the section of the memmap array. | ||
723 | */ | ||
724 | if (pg < pgend) | ||
725 | free_bootmem_node(NODE_DATA(node), pg, pgend - pg); | ||
726 | } | ||
727 | |||
728 | static inline void free_unused_memmap_node(int node, struct meminfo *mi) | ||
729 | { | ||
730 | unsigned long bank_start, prev_bank_end = 0; | ||
731 | unsigned int i; | ||
732 | |||
733 | /* | ||
734 | * [FIXME] This relies on each bank being in address order. This | ||
735 | * may not be the case, especially if the user has provided the | ||
736 | * information on the command line. | ||
737 | */ | ||
738 | for (i = 0; i < mi->nr_banks; i++) { | ||
739 | if (mi->bank[i].size == 0 || mi->bank[i].node != node) | ||
740 | continue; | ||
741 | |||
742 | bank_start = mi->bank[i].start >> PAGE_SHIFT; | ||
743 | if (bank_start < prev_bank_end) { | ||
744 | printk(KERN_ERR "MEM: unordered memory banks. " | ||
745 | "Not freeing memmap.\n"); | ||
746 | break; | ||
747 | } | ||
748 | |||
749 | /* | ||
750 | * If we had a previous bank, and there is a space | ||
751 | * between the current bank and the previous, free it. | ||
752 | */ | ||
753 | if (prev_bank_end && prev_bank_end != bank_start) | ||
754 | free_memmap(node, prev_bank_end, bank_start); | ||
755 | |||
756 | prev_bank_end = PAGE_ALIGN(mi->bank[i].start + | ||
757 | mi->bank[i].size) >> PAGE_SHIFT; | ||
758 | } | ||
759 | } | ||
760 | |||
761 | /* | ||
762 | * The mem_map array can get very big. Free | ||
763 | * the unused area of the memory map. | ||
764 | */ | ||
765 | void __init create_memmap_holes(struct meminfo *mi) | ||
766 | { | ||
767 | int node; | ||
768 | |||
769 | for_each_online_node(node) | ||
770 | free_unused_memmap_node(node, mi); | ||
771 | } | ||