memory unplug: page offline

[deliverable/linux.git] / include / linux / memory_hotplug.h

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 218501cfaeb9255ed62ca9fbf2a197cbb6993f53..665951ef039077eb9252cf8ac3af3a82dfebd834 100644 (file)
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -3,7 +3,6 @@
 
 #include <linux/mmzone.h>
 #include <linux/spinlock.h>
-#include <linux/mmzone.h>
 #include <linux/notifier.h>
 
 struct page;
@@ -59,11 +58,22 @@ extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
 extern void online_page(struct page *page);
 /* VM interface that may be used by firmware interface */
 extern int online_pages(unsigned long, unsigned long);
-
+#ifdef CONFIG_MEMORY_HOTREMOVE
+extern int offline_pages(unsigned long, unsigned long, unsigned long);
+extern void __offline_isolated_pages(unsigned long, unsigned long);
+#endif
 /* reasonably generic interface to expand the physical pages in a zone  */
 extern int __add_pages(struct zone *zone, unsigned long start_pfn,
        unsigned long nr_pages);
 
+/*
+ * Walk thorugh all memory which is registered as resource.
+ * arg is (start_pfn, nr_pages, private_arg_pointer)
+ */
+extern int walk_memory_resource(unsigned long start_pfn,
+                       unsigned long nr_pages, void *arg,
+                       int (*func)(unsigned long, unsigned long, void *));
+
 #ifdef CONFIG_NUMA
 extern int memory_add_physaddr_to_nid(u64 start);
 #else
@@ -172,5 +182,7 @@ static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
 extern int add_memory(int nid, u64 start, u64 size);
 extern int arch_add_memory(int nid, u64 start, u64 size);
 extern int remove_memory(u64 start, u64 size);
+extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
+                                                               int nr_pages);
 
 #endif /* __LINUX_MEMORY_HOTPLUG_H */