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 
numa_setup(void)17 void __init numa_setup(void)
18 {
19 	int nid;
20 
21 	nodes_clear(node_possible_map);
22 	node_set(0, node_possible_map);
23 	node_set_online(0);
24 	for (nid = 0; nid < MAX_NUMNODES; nid++)
25 		NODE_DATA(nid) = memblock_alloc_or_panic(sizeof(pg_data_t), 8);
26 	NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT;
27 	NODE_DATA(0)->node_id = 0;
28 }
29