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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (c) 2000 Silicon Graphics, Inc. All rights reserved.
7 * Copyright (c) 2002 NEC Corp.
8 * Copyright (c) 2002 Erich Focht <efocht@ess.nec.de>
9 * Copyright (c) 2002 Kimio Suganuma <k-suganuma@da.jp.nec.com>
10 */
11#ifndef _ASM_IA64_NODEDATA_H
12#define _ASM_IA64_NODEDATA_H
13
14#include <linux/config.h>
15#include <linux/numa.h>
16
17#include <asm/percpu.h>
18#include <asm/mmzone.h>
19
20#ifdef CONFIG_DISCONTIGMEM
21
22/*
23 * Node Data. One of these structures is located on each node of a NUMA system.
24 */
25
26struct pglist_data;
27struct ia64_node_data {
28 short active_cpu_count;
29 short node;
30 struct pglist_data *pg_data_ptrs[MAX_NUMNODES];
31};
32
33
34/*
35 * Return a pointer to the node_data structure for the executing cpu.
36 */
37#define local_node_data (local_cpu_data->node_data)
38
39/*
40 * Given a node id, return a pointer to the pg_data_t for the node.
41 *
42 * NODE_DATA - should be used in all code not related to system
43 * initialization. It uses pernode data structures to minimize
44 * offnode memory references. However, these structure are not
45 * present during boot. This macro can be used once cpu_init
46 * completes.
47 */
48#define NODE_DATA(nid) (local_node_data->pg_data_ptrs[nid])
49
50#endif /* CONFIG_DISCONTIGMEM */
51
52#endif /* _ASM_IA64_NODEDATA_H */