1 // SPDX-License-Identifier: GPL-2.0-or-later 2 3 #include <linux/memblock.h> 4 #include <linux/printk.h> 5 #include <linux/numa.h> 6 #include <linux/numa_memblks.h> 7 8 struct pglist_data *node_data[MAX_NUMNODES]; 9 EXPORT_SYMBOL(node_data); 10 11 /* Allocate NODE_DATA for a node on the local memory */ 12 void __init alloc_node_data(int nid) 13 { 14 const size_t nd_size = roundup(sizeof(pg_data_t), SMP_CACHE_BYTES); 15 u64 nd_pa; 16 int tnid; 17 18 /* Allocate node data. Try node-local memory and then any node. */ 19 nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid); 20 if (!nd_pa) 21 panic("Cannot allocate %zu bytes for node %d data\n", 22 nd_size, nid); 23 24 /* report and initialize */ 25 pr_info("NODE_DATA(%d) allocated [mem %#010Lx-%#010Lx]\n", nid, 26 nd_pa, nd_pa + nd_size - 1); 27 tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT); 28 if (tnid != nid) 29 pr_info(" NODE_DATA(%d) on node %d\n", nid, tnid); 30 31 node_data[nid] = __va(nd_pa); 32 memset(NODE_DATA(nid), 0, sizeof(pg_data_t)); 33 } 34 35 void __init alloc_offline_node_data(int nid) 36 { 37 pg_data_t *pgdat; 38 node_data[nid] = memblock_alloc_or_panic(sizeof(*pgdat), SMP_CACHE_BYTES); 39 } 40 41 /* Stub functions: */ 42 43 #ifndef memory_add_physaddr_to_nid 44 int memory_add_physaddr_to_nid(u64 start) 45 { 46 pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n", 47 start); 48 return 0; 49 } 50 EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); 51 #endif 52 53 #ifndef phys_to_target_node 54 int phys_to_target_node(u64 start) 55 { 56 pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n", 57 start); 58 return 0; 59 } 60 EXPORT_SYMBOL_GPL(phys_to_target_node); 61 #endif 62