// SPDX-License-Identifier: GPL-2.0-or-later #include <linux/memblock.h> #include <linux/printk.h> #include <linux/numa.h> #include <linux/numa_memblks.h> struct pglist_data *node_data[MAX_NUMNODES]; EXPORT_SYMBOL(node_data); /* Allocate NODE_DATA for a node on the local memory */ void __init alloc_node_data(int nid) { const size_t nd_size = roundup(sizeof(pg_data_t), SMP_CACHE_BYTES); u64 nd_pa; void *nd; int tnid; /* Allocate node data. Try node-local memory and then any node. */ nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid); if (!nd_pa) panic("Cannot allocate %zu bytes for node %d data\n", nd_size, nid); nd = __va(nd_pa); /* report and initialize */ pr_info("NODE_DATA(%d) allocated [mem %#010Lx-%#010Lx]\n", nid, nd_pa, nd_pa + nd_size - 1); tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT); if (tnid != nid) pr_info(" NODE_DATA(%d) on node %d\n", nid, tnid); node_data[nid] = nd; memset(NODE_DATA(nid), 0, sizeof(pg_data_t)); } void __init alloc_offline_node_data(int nid) { pg_data_t *pgdat; pgdat = memblock_alloc(sizeof(*pgdat), SMP_CACHE_BYTES); if (!pgdat) panic("Cannot allocate %zuB for node %d.\n", sizeof(*pgdat), nid); node_data[nid] = pgdat; } /* Stub functions: */ #ifndef memory_add_physaddr_to_nid int memory_add_physaddr_to_nid(u64 start) { pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n", start); return 0; } EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); #endif #ifndef phys_to_target_node int phys_to_target_node(u64 start) { pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n", start); return 0; } EXPORT_SYMBOL_GPL(phys_to_target_node); #endif