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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2000 Silicon Graphics, Inc. All rights reserved.
* Copyright (c) 2002 NEC Corp.
* Copyright (c) 2002 Erich Focht <efocht@ess.nec.de>
* Copyright (c) 2002 Kimio Suganuma <k-suganuma@da.jp.nec.com>
*/
#ifndef _ASM_IA64_NODEDATA_H
#define _ASM_IA64_NODEDATA_H
#include <linux/numa.h>
#include <asm/percpu.h>
#include <asm/mmzone.h>
#ifdef CONFIG_NUMA
/*
* Node Data. One of these structures is located on each node of a NUMA system.
*/
struct pglist_data;
struct ia64_node_data {
short active_cpu_count;
short node;
struct pglist_data *pg_data_ptrs[MAX_NUMNODES];
};
/*
* Return a pointer to the node_data structure for the executing cpu.
*/
#define local_node_data (local_cpu_data->node_data)
/*
* Given a node id, return a pointer to the pg_data_t for the node.
*
* NODE_DATA - should be used in all code not related to system
* initialization. It uses pernode data structures to minimize
* offnode memory references. However, these structure are not
* present during boot. This macro can be used once cpu_init
* completes.
*/
#define NODE_DATA(nid) (local_node_data->pg_data_ptrs[nid])
/*
* LOCAL_DATA_ADDR - This is to calculate the address of other node's
* "local_node_data" at hot-plug phase. The local_node_data
* is pointed by per_cpu_page. Kernel usually use it for
* just executing cpu. However, when new node is hot-added,
* the addresses of local data for other nodes are necessary
* to update all of them.
*/
#define LOCAL_DATA_ADDR(pgdat) \
((struct ia64_node_data *)((u64)(pgdat) + \
L1_CACHE_ALIGN(sizeof(struct pglist_data))))
#endif /* CONFIG_NUMA */
#endif /* _ASM_IA64_NODEDATA_H */
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