diff options
Diffstat (limited to 'mm/mm_init.c')
| -rw-r--r-- | mm/mm_init.c | 48 |
1 files changed, 19 insertions, 29 deletions
diff --git a/mm/mm_init.c b/mm/mm_init.c index a5f91eba4f8d..2830eef2b16c 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -1467,8 +1467,7 @@ void __init set_pageblock_order(void) /* * Assume the largest contiguous order of interest is a huge page. - * This value may be variable depending on boot parameters on IA64 and - * powerpc. + * This value may be variable depending on boot parameters on powerpc. */ pageblock_order = order; } @@ -1629,8 +1628,8 @@ void __init *memmap_alloc(phys_addr_t size, phys_addr_t align, #ifdef CONFIG_FLATMEM static void __init alloc_node_mem_map(struct pglist_data *pgdat) { - unsigned long __maybe_unused start = 0; - unsigned long __maybe_unused offset = 0; + unsigned long start, offset, size, end; + struct page *map; /* Skip empty nodes */ if (!pgdat->node_spanned_pages) @@ -1638,33 +1637,24 @@ static void __init alloc_node_mem_map(struct pglist_data *pgdat) start = pgdat->node_start_pfn & ~(MAX_ORDER_NR_PAGES - 1); offset = pgdat->node_start_pfn - start; - /* ia64 gets its own node_mem_map, before this, without bootmem */ - if (!pgdat->node_mem_map) { - unsigned long size, end; - struct page *map; - - /* - * The zone's endpoints aren't required to be MAX_ORDER - * aligned but the node_mem_map endpoints must be in order - * for the buddy allocator to function correctly. - */ - end = pgdat_end_pfn(pgdat); - end = ALIGN(end, MAX_ORDER_NR_PAGES); - size = (end - start) * sizeof(struct page); - map = memmap_alloc(size, SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT, - pgdat->node_id, false); - if (!map) - panic("Failed to allocate %ld bytes for node %d memory map\n", - size, pgdat->node_id); - pgdat->node_mem_map = map + offset; - } - pr_debug("%s: node %d, pgdat %08lx, node_mem_map %08lx\n", - __func__, pgdat->node_id, (unsigned long)pgdat, - (unsigned long)pgdat->node_mem_map); -#ifndef CONFIG_NUMA /* - * With no DISCONTIG, the global mem_map is just set as node 0's + * The zone's endpoints aren't required to be MAX_ORDER + * aligned but the node_mem_map endpoints must be in order + * for the buddy allocator to function correctly. */ + end = ALIGN(pgdat_end_pfn(pgdat), MAX_ORDER_NR_PAGES); + size = (end - start) * sizeof(struct page); + map = memmap_alloc(size, SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT, + pgdat->node_id, false); + if (!map) + panic("Failed to allocate %ld bytes for node %d memory map\n", + size, pgdat->node_id); + pgdat->node_mem_map = map + offset; + pr_debug("%s: node %d, pgdat %08lx, node_mem_map %08lx\n", + __func__, pgdat->node_id, (unsigned long)pgdat, + (unsigned long)pgdat->node_mem_map); +#ifndef CONFIG_NUMA + /* the global mem_map is just set as node 0's */ if (pgdat == NODE_DATA(0)) { mem_map = NODE_DATA(0)->node_mem_map; if (page_to_pfn(mem_map) != pgdat->node_start_pfn) |