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
8struct pglist_data *node_data[MAX_NUMNODES];
9EXPORT_SYMBOL(node_data);
10
11/* Allocate NODE_DATA for a node on the local memory */
12void __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(size: nd_size, SMP_CACHE_BYTES, nid);
20 if (!nd_pa)
21 panic(fmt: "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(pfn: 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), c: 0, n: sizeof(pg_data_t));
33}
34
35void __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
44int 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}
50EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
51#endif
52
53#ifndef phys_to_target_node
54int 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}
60EXPORT_SYMBOL_GPL(phys_to_target_node);
61#endif
62