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 void *nd; 17 int tnid; 18 19 /* Allocate node data. Try node-local memory and then any node. */ 20 nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid); 21 if (!nd_pa) 22 panic("Cannot allocate %zu bytes for node %d data\n", 23 nd_size, nid); 24 nd = __va(nd_pa); 25 26 /* report and initialize */ 27 pr_info("NODE_DATA(%d) allocated [mem %#010Lx-%#010Lx]\n", nid, 28 nd_pa, nd_pa + nd_size - 1); 29 tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT); 30 if (tnid != nid) 31 pr_info(" NODE_DATA(%d) on node %d\n", nid, tnid); 32 33 node_data[nid] = nd; 34 memset(NODE_DATA(nid), 0, sizeof(pg_data_t)); 35 } 36 37 void __init alloc_offline_node_data(int nid) 38 { 39 pg_data_t *pgdat; 40 41 pgdat = memblock_alloc(sizeof(*pgdat), SMP_CACHE_BYTES); 42 if (!pgdat) 43 panic("Cannot allocate %zuB for node %d.\n", 44 sizeof(*pgdat), nid); 45 46 node_data[nid] = pgdat; 47 } 48 49 /* Stub functions: */ 50 51 #ifndef memory_add_physaddr_to_nid 52 int memory_add_physaddr_to_nid(u64 start) 53 { 54 pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n", 55 start); 56 return 0; 57 } 58 EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); 59 #endif 60 61 #ifndef phys_to_target_node 62 int phys_to_target_node(u64 start) 63 { 64 pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n", 65 start); 66 return 0; 67 } 68 EXPORT_SYMBOL_GPL(phys_to_target_node); 69 #endif 70