static void __init do_init_bootmem(void) { struct memblock_region *reg; /* Add active regions with valid PFNs. */ for_each_memblock(memory, reg) { unsigned long start_pfn, end_pfn; start_pfn = memblock_region_memory_base_pfn(reg); end_pfn = memblock_region_memory_end_pfn(reg); __add_active_range(0, start_pfn, end_pfn); }
void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end) { unsigned long bootmap_pages; unsigned long start_pfn, end_pfn; unsigned long bootmem_paddr; /* Don't allow bogus node assignment */ BUG_ON(nid > MAX_NUMNODES || nid <= 0); start_pfn = start >> PAGE_SHIFT; end_pfn = end >> PAGE_SHIFT; pmb_bolt_mapping((unsigned long)__va(start), start, end - start, PAGE_KERNEL); lmb_add(start, end - start); __add_active_range(nid, start_pfn, end_pfn); /* Node-local pgdat */ NODE_DATA(nid) = __va(lmb_alloc_base(sizeof(struct pglist_data), SMP_CACHE_BYTES, end)); memset(NODE_DATA(nid), 0, sizeof(struct pglist_data)); NODE_DATA(nid)->bdata = &bootmem_node_data[nid]; NODE_DATA(nid)->node_start_pfn = start_pfn; NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn; /* Node-local bootmap */ bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn); bootmem_paddr = lmb_alloc_base(bootmap_pages << PAGE_SHIFT, PAGE_SIZE, end); init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT, start_pfn, end_pfn); free_bootmem_with_active_regions(nid, end_pfn); /* Reserve the pgdat and bootmap space with the bootmem allocator */ reserve_bootmem_node(NODE_DATA(nid), start_pfn << PAGE_SHIFT, sizeof(struct pglist_data), BOOTMEM_DEFAULT); reserve_bootmem_node(NODE_DATA(nid), bootmem_paddr, bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT); /* It's up */ node_set_online(nid); /* Kick sparsemem */ sparse_memory_present_with_active_regions(nid); }
void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end) { unsigned long bootmap_pages, bootmap_start, bootmap_size; unsigned long start_pfn, free_pfn, end_pfn; /* Don't allow bogus node assignment */ BUG_ON(nid > MAX_NUMNODES || nid == 0); /* * The free pfn starts at the beginning of the range, and is * advanced as necessary for pgdat and node map allocations. */ free_pfn = start_pfn = start >> PAGE_SHIFT; end_pfn = end >> PAGE_SHIFT; __add_active_range(nid, start_pfn, end_pfn); /* Node-local pgdat */ NODE_DATA(nid) = pfn_to_kaddr(free_pfn); free_pfn += PFN_UP(sizeof(struct pglist_data)); memset(NODE_DATA(nid), 0, sizeof(struct pglist_data)); NODE_DATA(nid)->bdata = &bootmem_node_data[nid]; NODE_DATA(nid)->node_start_pfn = start_pfn; NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn; /* Node-local bootmap */ bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn); bootmap_start = (unsigned long)pfn_to_kaddr(free_pfn); bootmap_size = init_bootmem_node(NODE_DATA(nid), free_pfn, start_pfn, end_pfn); free_bootmem_with_active_regions(nid, end_pfn); /* Reserve the pgdat and bootmap space with the bootmem allocator */ reserve_bootmem_node(NODE_DATA(nid), start_pfn << PAGE_SHIFT, sizeof(struct pglist_data), BOOTMEM_DEFAULT); reserve_bootmem_node(NODE_DATA(nid), free_pfn << PAGE_SHIFT, bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT); /* It's up */ node_set_online(nid); /* Kick sparsemem */ sparse_memory_present_with_active_regions(nid); }