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
17 struct pglist_data *node_data[MAX_NUMNODES];
18 EXPORT_SYMBOL(node_data);
19
20 void __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
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