1// SPDX-License-Identifier: GPL-2.0
2/*
3 * NUMA support for s390
4 *
5 * Implement NUMA core code.
6 *
7 * Copyright IBM Corp. 2015
8 */
9
10#include <linux/kernel.h>
11#include <linux/mmzone.h>
12#include <linux/cpumask.h>
13#include <linux/memblock.h>
14#include <linux/node.h>
15#include <asm/numa.h>
16
17struct pglist_data *node_data[MAX_NUMNODES];
18EXPORT_SYMBOL(node_data);
19
20void __init numa_setup(void)
21{
22	int nid;
23
24	nodes_clear(node_possible_map);
25	node_set(0, node_possible_map);
26	node_set_online(0);
27	for (nid = 0; nid < MAX_NUMNODES; nid++) {
28		NODE_DATA(nid) = memblock_alloc(sizeof(pg_data_t), 8);
29		if (!NODE_DATA(nid))
30			panic("%s: Failed to allocate %zu bytes align=0x%x\n",
31			      __func__, sizeof(pg_data_t), 8);
32	}
33	NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT;
34	NODE_DATA(0)->node_id = 0;
35}
36