| /* |
| * 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 */ |
