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Diffstat (limited to 'include/asm-ia64/nodedata.h')
| -rw-r--r-- | include/asm-ia64/nodedata.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/asm-ia64/nodedata.h b/include/asm-ia64/nodedata.h new file mode 100644 index 000000000000..6b0f3ed89b7e --- /dev/null +++ b/include/asm-ia64/nodedata.h @@ -0,0 +1,52 @@ +/* + * 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/config.h> +#include <linux/numa.h> + +#include <asm/percpu.h> +#include <asm/mmzone.h> + +#ifdef CONFIG_DISCONTIGMEM + +/* + * 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]) + +#endif /* CONFIG_DISCONTIGMEM */ + +#endif /* _ASM_IA64_NODEDATA_H */ |