1 files changed, 85 insertions, 0 deletions
diff --git a/include/linux/node.h b/include/linux/node.h
new file mode 100644
index 00000000..92370e22
--- /dev/null
+++ b/include/linux/node.h
@@ -0,0 +1,85 @@
+/*
+ * include/linux/node.h - generic node definition
+ *
+ * This is mainly for topological representation. We define the 
+ * basic 'struct node' here, which can be embedded in per-arch 
+ * definitions of processors.
+ *
+ * Basic handling of the devices is done in drivers/base/node.c
+ * and system devices are handled in drivers/base/sys.c. 
+ *
+ * Nodes are exported via driverfs in the class/node/devices/
+ * directory. 
+ */
+#ifndef _LINUX_NODE_H_
+#define _LINUX_NODE_H_
+
+#include <linux/sysdev.h>
+#include <linux/cpumask.h>
+#include <linux/workqueue.h>
+
+struct node {
+	struct sys_device	sysdev;
+
+#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
+	struct work_struct	node_work;
+#endif
+};
+
+struct memory_block;
+extern struct node node_devices[];
+typedef  void (*node_registration_func_t)(struct node *);
+
+extern int register_node(struct node *, int, struct node *);
+extern void unregister_node(struct node *node);
+#ifdef CONFIG_NUMA
+extern int register_one_node(int nid);
+extern void unregister_one_node(int nid);
+extern int register_cpu_under_node(unsigned int cpu, unsigned int nid);
+extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
+extern int register_mem_sect_under_node(struct memory_block *mem_blk,
+						int nid);
+extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk,
+					   unsigned long phys_index);
+
+#ifdef CONFIG_HUGETLBFS
+extern void register_hugetlbfs_with_node(node_registration_func_t doregister,
+					 node_registration_func_t unregister);
+#endif
+#else
+static inline int register_one_node(int nid)
+{
+	return 0;
+}
+static inline int unregister_one_node(int nid)
+{
+	return 0;
+}
+static inline int register_cpu_under_node(unsigned int cpu, unsigned int nid)
+{
+	return 0;
+}
+static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
+{
+	return 0;
+}
+static inline int register_mem_sect_under_node(struct memory_block *mem_blk,
+							int nid)
+{
+	return 0;
+}
+static inline int unregister_mem_sect_under_nodes(struct memory_block *mem_blk,
+						  unsigned long phys_index)
+{
+	return 0;
+}
+
+static inline void register_hugetlbfs_with_node(node_registration_func_t reg,
+						node_registration_func_t unreg)
+{
+}
+#endif
+
+#define to_node(sys_device) container_of(sys_device, struct node, sysdev)
+
+#endif /* _LINUX_NODE_H_ */