X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=include%2Fasm-ia64%2Fnodedata.h;h=2fb337b0e9b786486508a6611c3e6e098ea58781;hb=a8dcf12f9e8ba113251c04d602f1695d537fb142;hp=a140310bf84dcb4120980b883965a9ea9260a847;hpb=70ac4385a13f78bc478f26d317511893741b05bd;p=mv-sheeva.git

diff --git a/include/asm-ia64/nodedata.h b/include/asm-ia64/nodedata.h
index a140310bf84..2fb337b0e9b 100644
--- a/include/asm-ia64/nodedata.h
+++ b/include/asm-ia64/nodedata.h
@@ -46,6 +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 */