| /* | |
| * 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 */ |