for_each_memblock(memory, reg) { unsigned long start_pfn = memblock_region_memory_base_pfn(reg); unsigned long end_pfn = memblock_region_memory_end_pfn(reg); memblock_set_node(PFN_PHYS(start_pfn), PFN_PHYS(end_pfn - start_pfn), &memblock.memory, 0); }
/** * numa_add_memblk - Set node id to memblk * @nid: NUMA node ID of the new memblk * @start: Start address of the new memblk * @end: End address of the new memblk * * RETURNS: * 0 on success, -errno on failure. */ int __init numa_add_memblk(int nid, u64 start, u64 end) { int ret; ret = memblock_set_node(start, (end - start), &memblock.memory, nid); if (ret < 0) { pr_err("memblock [0x%llx - 0x%llx] failed to add on node %d\n", start, (end - 1), nid); return ret; } node_set(nid, numa_nodes_parsed); return ret; }
/* * On Meta machines the conventional approach is to stash system RAM * in node 0, and other memory blocks in to node 1 and up, ordered by * latency. Each node's pgdat is node-local at the beginning of the node, * immediately followed by the node mem map. */ void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end) { unsigned long bootmap_pages, bootmem_paddr; unsigned long start_pfn, end_pfn; unsigned long pgdat_paddr; /* Don't allow bogus node assignment */ BUG_ON(nid > MAX_NUMNODES || nid <= 0); start_pfn = start >> PAGE_SHIFT; end_pfn = end >> PAGE_SHIFT; memblock_add(start, end - start); memblock_set_node(PFN_PHYS(start_pfn), PFN_PHYS(end_pfn - start_pfn), nid); /* Node-local pgdat */ pgdat_paddr = memblock_alloc_base(sizeof(struct pglist_data), SMP_CACHE_BYTES, end); NODE_DATA(nid) = __va(pgdat_paddr); 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 = memblock_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), pgdat_paddr & PAGE_MASK, 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); }