[linux-block.git] / arch / s390 / kernel / numa.c

// SPDX-License-Identifier: GPL-2.0
/*
 * NUMA support for s390
 *
 * Implement NUMA core code.
 *
 * Copyright IBM Corp. 2015
 */

#include <linux/kernel.h>
#include <linux/mmzone.h>
#include <linux/cpumask.h>
#include <linux/memblock.h>
#include <linux/node.h>
#include <asm/numa.h>

struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(node_data);

void __init numa_setup(void)
{
	int nid;

	nodes_clear(node_possible_map);
	node_set(0, node_possible_map);
	node_set_online(0);
	for (nid = 0; nid < MAX_NUMNODES; nid++) {
		NODE_DATA(nid) = memblock_alloc(sizeof(pg_data_t), 8);
		if (!NODE_DATA(nid))
			panic("%s: Failed to allocate %zu bytes align=0x%x\n",
			      __func__, sizeof(pg_data_t), 8);
	}
	NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT;
	NODE_DATA(0)->node_id = 0;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
3a368f74 PH	2	/*
	3	* NUMA support for s390
	4	*
	5	* Implement NUMA core code.
	6	*
	7	* Copyright IBM Corp. 2015
	8	*/
	9
3a368f74 PH	10	#include <linux/kernel.h>
	11	#include <linux/mmzone.h>
	12	#include <linux/cpumask.h>
3a368f74	13	#include <linux/memblock.h>
3a368f74	14	#include <linux/node.h>
3a368f74	15	#include <asm/numa.h>
3a368f74	16
701dc81e	17	struct pglist_data *node_data[MAX_NUMNODES];
3a368f74 PH	18	EXPORT_SYMBOL(node_data);
3a368f74 PH	19
701dc81e	20	void __init numa_setup(void)
3a368f74	21	{
701dc81e	22	int nid;
3a368f74	23
701dc81e HC	24	nodes_clear(node_possible_map);
	25	node_set(0, node_possible_map);
	26	node_set_online(0);
8a7f97b9	27	for (nid = 0; nid < MAX_NUMNODES; nid++) {
c2938eeb	28	NODE_DATA(nid) = memblock_alloc(sizeof(pg_data_t), 8);
8a7f97b9 MR	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	}
701dc81e HC	33	NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT;
701dc81e HC	34	NODE_DATA(0)->node_id = 0;
3a368f74	35	}