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