[Patch: 004/006] pgdat allocation for new node add (refresh node_data[])

[Yasunori Goto <y-goto@jp.fujitsu.com>]

This function refresh NODE_DATA() for generic archs.
In this case, NODE_DATA(nid) == node_data[nid].
node_data[] is array of address of pgdat.
So, refresh is quite simple.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

 arch/ia64/Kconfig              |    4 ++++
 include/linux/memory_hotplug.h |   12 ++++++++++++
 2 files changed, 16 insertions(+)

Index: pgdat11/include/linux/memory_hotplug.h
===================================================================
--- pgdat11.orig/include/linux/memory_hotplug.h	2006-04-20 11:00:23.000000000 +0900
+++ pgdat11/include/linux/memory_hotplug.h	2006-04-20 11:00:28.000000000 +0900
@@ -91,6 +91,9 @@ static inline pg_data_t * arch_alloc_nod
 static inline void arch_free_nodedata(pg_data_t *pgdat)
 {
 }
+static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
+{
+}
 
 #else /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
 
@@ -114,6 +117,12 @@ static inline void arch_free_nodedata(pg
  */
 #define generic_free_nodedata(pgdat)	kfree(pgdat)
 
+extern pg_data_t *node_data[];
+static inline void generic_refresh_nodedata(int nid, pg_data_t *pgdat)
+{
+	node_data[nid] = pgdat;
+}
+
 #else /* !CONFIG_NUMA */
 
 /* never called */
@@ -125,6 +134,9 @@ static inline pg_data_t *generic_alloc_n
 static inline void generic_free_nodedata(pg_data_t *pgdat)
 {
 }
+static inline void generic_refresh_nodedata(int nid, pg_data_t *pgdat)
+{
+}
 #endif /* CONFIG_NUMA */
 #endif /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
 
Index: pgdat11/arch/ia64/Kconfig
===================================================================
--- pgdat11.orig/arch/ia64/Kconfig	2006-04-20 11:00:04.000000000 +0900
+++ pgdat11/arch/ia64/Kconfig	2006-04-20 11:00:28.000000000 +0900
@@ -374,6 +374,10 @@ config HAVE_ARCH_EARLY_PFN_TO_NID
 	def_bool y
 	depends on NEED_MULTIPLE_NODES
 
+config HAVE_ARCH_NODEDATA_EXTENSION
+	def_bool y
+	depends on NUMA
+
 config IA32_SUPPORT
 	bool "Support for Linux/x86 binaries"
 	help

-- 
Yasunori Goto