struct page;
struct zone;
struct pglist_data;
+struct mem_section;
#ifdef CONFIG_MEMORY_HOTPLUG
+
+/*
+ * Types for free bootmem.
+ * The normal smallest mapcount is -1. Here is smaller value than it.
+ */
+#define SECTION_INFO (-1 - 1)
+#define MIX_SECTION_INFO (-1 - 2)
+#define NODE_INFO (-1 - 3)
+
/*
* pgdat resizing functions
*/
extern void online_page(struct page *page);
/* VM interface that may be used by firmware interface */
extern int online_pages(unsigned long, unsigned long);
+extern void __offline_isolated_pages(unsigned long, unsigned long);
+extern int offline_pages(unsigned long, unsigned long, unsigned long);
/* 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 *));
+extern int __remove_pages(struct zone *zone, unsigned long start_pfn,
+ unsigned long nr_pages);
#ifdef CONFIG_NUMA
extern int memory_add_physaddr_to_nid(u64 start);
#endif /* CONFIG_NUMA */
#endif /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+static inline void register_page_bootmem_info_node(struct pglist_data *pgdat)
+{
+}
+static inline void put_page_bootmem(struct page *page)
+{
+}
+#else
+extern void register_page_bootmem_info_node(struct pglist_data *pgdat);
+extern void put_page_bootmem(struct page *page);
+#endif
+
#else /* ! CONFIG_MEMORY_HOTPLUG */
/*
* Stub functions for when hotplug is off
return -ENOSYS;
}
+static inline void register_page_bootmem_info_node(struct pglist_data *pgdat)
+{
+}
+
#endif /* ! CONFIG_MEMORY_HOTPLUG */
-static inline int __remove_pages(struct zone *zone, unsigned long start_pfn,
- unsigned long nr_pages)
+
+/*
+ * Walk through 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_MEMORY_HOTREMOVE
+
+extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages);
+
+#else
+static inline int is_mem_section_removable(unsigned long pfn,
+ unsigned long nr_pages)
{
- printk(KERN_WARNING "%s() called, not yet supported\n", __FUNCTION__);
- dump_stack();
- return -ENOSYS;
+ return 0;
}
+#endif /* CONFIG_MEMORY_HOTREMOVE */
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);
+extern void sparse_remove_one_section(struct zone *zone, struct mem_section *ms);
+extern struct page *sparse_decode_mem_map(unsigned long coded_mem_map,
+ unsigned long pnum);
#endif /* __LINUX_MEMORY_HOTPLUG_H */