[PATCH: 005/017](RFC) Memory hotplug for new nodes v.3. (generic refresh NODE_DATA())

[PATCH: 005/017](RFC) Memory hotplug for new nodes v.3. (generic refresh NODE_DATA())

[Yasunori Goto]

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>

Index: pgdat6/include/linux/memory_hotplug.h
===================================================================
--- pgdat6.orig/include/linux/memory_hotplug.h	2006-03-06 19:42:21.000000000 +0900
+++ pgdat6/include/linux/memory_hotplug.h	2006-03-06 19:42:30.000000000 +0900
@@ -87,10 +87,13 @@ static inline int arch_nid_probe(u64 sta
  */
 extern struct pglist_data * arch_alloc_nodedata(int nid);
 extern void arch_free_nodedata(pg_data_t *pgdat);
+extern void arch_refresh_nodedata(int nid, pg_data_t *pgdat);
 
 #else /* !CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
 #define arch_alloc_nodedata(nid)	generic_alloc_nodedata(nid)
 #define arch_free_nodedata(pgdat)	generic_free_nodedata(pgdat)
+#define arch_refresh_nodedata(nid, pgdat)	\
+				generic_refresh_nodedata(nid, pgdat)
 
 #ifdef CONFIG_NUMA
 /*
@@ -109,6 +112,11 @@ static inline void generic_free_nodedata
 	kfree(pgdat);
 }
 
+static inline void generic_refresh_nodedata(int nid, struct pglist_data *pgdat)
+{
+	NODE_DATA(nid) = pgdat;
+}
+
 #else /* !CONFIG_NUMA */
 /* never called */
 static inline struct pglist_data *generic_alloc_nodedata(int nid)
@@ -119,6 +127,9 @@ static inline struct pglist_data *generi
 static inline void generic_free_nodedata(struct pglist_data *pgdat)
 {
 }
+static inline void generic_refresh_nodedata(int nid, struct pglist_data *pgdat)
+{
+}
 #endif /* CONFIG_NUMA */
 #endif /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
 

-- 
Yasunori Goto 


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