Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...

[linux-2.6.git] / include / asm-ia64 / nodedata.h

diff --git a/include/asm-ia64/nodedata.h b/include/asm-ia64/nodedata.h
index 9978c7c..2fb337b 100644 (file)
--- a/include/asm-ia64/nodedata.h
+++ b/include/asm-ia64/nodedata.h
@@ -11,7 +11,6 @@
 #ifndef _ASM_IA64_NODEDATA_H
 #define _ASM_IA64_NODEDATA_H
 
-#include <linux/config.h>
 #include <linux/numa.h>
 
 #include <asm/percpu.h>
@@ -47,6 +46,18 @@ struct ia64_node_data {
  */
 #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 */