1 files changed, 63 insertions, 0 deletions

diff --git a/arch/ia64/include/asm/nodedata.h b/arch/ia64/include/asm/nodedata.h
new file mode 100644
index 000000000000..2fb337b0e9b7
--- /dev/null
+++ b/arch/ia64/include/asm/nodedata.h
@@ -0,0 +1,63 @@
+/*
+ * 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 */