diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/memory_hotplug.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/memory_hotplug.h | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/ANDROID_3.4.5/include/linux/memory_hotplug.h b/ANDROID_3.4.5/include/linux/memory_hotplug.h deleted file mode 100644 index 910550f3..00000000 --- a/ANDROID_3.4.5/include/linux/memory_hotplug.h +++ /dev/null @@ -1,243 +0,0 @@ -#ifndef __LINUX_MEMORY_HOTPLUG_H -#define __LINUX_MEMORY_HOTPLUG_H - -#include <linux/mmzone.h> -#include <linux/spinlock.h> -#include <linux/notifier.h> -#include <linux/bug.h> - -struct page; -struct zone; -struct pglist_data; -struct mem_section; - -#ifdef CONFIG_MEMORY_HOTPLUG - -/* - * Types for free bootmem stored in page->lru.next. These have to be in - * some random range in unsigned long space for debugging purposes. - */ -enum { - MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE = 12, - SECTION_INFO = MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE, - MIX_SECTION_INFO, - NODE_INFO, - MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE = NODE_INFO, -}; - -/* - * pgdat resizing functions - */ -static inline -void pgdat_resize_lock(struct pglist_data *pgdat, unsigned long *flags) -{ - spin_lock_irqsave(&pgdat->node_size_lock, *flags); -} -static inline -void pgdat_resize_unlock(struct pglist_data *pgdat, unsigned long *flags) -{ - spin_unlock_irqrestore(&pgdat->node_size_lock, *flags); -} -static inline -void pgdat_resize_init(struct pglist_data *pgdat) -{ - spin_lock_init(&pgdat->node_size_lock); -} -/* - * Zone resizing functions - */ -static inline unsigned zone_span_seqbegin(struct zone *zone) -{ - return read_seqbegin(&zone->span_seqlock); -} -static inline int zone_span_seqretry(struct zone *zone, unsigned iv) -{ - return read_seqretry(&zone->span_seqlock, iv); -} -static inline void zone_span_writelock(struct zone *zone) -{ - write_seqlock(&zone->span_seqlock); -} -static inline void zone_span_writeunlock(struct zone *zone) -{ - write_sequnlock(&zone->span_seqlock); -} -static inline void zone_seqlock_init(struct zone *zone) -{ - seqlock_init(&zone->span_seqlock); -} -extern int zone_grow_free_lists(struct zone *zone, unsigned long new_nr_pages); -extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages); -extern int add_one_highpage(struct page *page, int pfn, int bad_ppro); -/* 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); - -typedef void (*online_page_callback_t)(struct page *page); - -extern int set_online_page_callback(online_page_callback_t callback); -extern int restore_online_page_callback(online_page_callback_t callback); - -extern void __online_page_set_limits(struct page *page); -extern void __online_page_increment_counters(struct page *page); -extern void __online_page_free(struct page *page); - -#ifdef CONFIG_MEMORY_HOTREMOVE -extern bool is_pageblock_removable_nolock(struct page *page); -#endif /* CONFIG_MEMORY_HOTREMOVE */ - -/* reasonably generic interface to expand the physical pages in a zone */ -extern int __add_pages(int nid, struct zone *zone, unsigned long start_pfn, - unsigned long nr_pages); -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); -#else -static inline int memory_add_physaddr_to_nid(u64 start) -{ - return 0; -} -#endif - -#ifdef CONFIG_HAVE_ARCH_NODEDATA_EXTENSION -/* - * For supporting node-hotadd, we have to allocate a new pgdat. - * - * If an arch has generic style NODE_DATA(), - * node_data[nid] = kzalloc() works well. But it depends on the architecture. - * - * In general, generic_alloc_nodedata() is used. - * Now, arch_free_nodedata() is just defined for error path of node_hot_add. - * - */ -extern pg_data_t *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) - -#ifdef CONFIG_NUMA -/* - * If ARCH_HAS_NODEDATA_EXTENSION=n, this func is used to allocate pgdat. - * XXX: kmalloc_node() can't work well to get new node's memory at this time. - * Because, pgdat for the new node is not allocated/initialized yet itself. - * To use new node's memory, more consideration will be necessary. - */ -#define generic_alloc_nodedata(nid) \ -({ \ - kzalloc(sizeof(pg_data_t), GFP_KERNEL); \ -}) -/* - * This definition is just for error path in node hotadd. - * For node hotremove, we have to replace this. - */ -#define generic_free_nodedata(pgdat) kfree(pgdat) - -extern pg_data_t *node_data[]; -static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat) -{ - node_data[nid] = pgdat; -} - -#else /* !CONFIG_NUMA */ - -/* never called */ -static inline pg_data_t *generic_alloc_nodedata(int nid) -{ - BUG(); - return NULL; -} -static inline void generic_free_nodedata(pg_data_t *pgdat) -{ -} -static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat) -{ -} -#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 - -/* - * Lock for memory hotplug guarantees 1) all callbacks for memory hotplug - * notifier will be called under this. 2) offline/online/add/remove memory - * will not run simultaneously. - */ - -void lock_memory_hotplug(void); -void unlock_memory_hotplug(void); - -#else /* ! CONFIG_MEMORY_HOTPLUG */ -/* - * Stub functions for when hotplug is off - */ -static inline void pgdat_resize_lock(struct pglist_data *p, unsigned long *f) {} -static inline void pgdat_resize_unlock(struct pglist_data *p, unsigned long *f) {} -static inline void pgdat_resize_init(struct pglist_data *pgdat) {} - -static inline unsigned zone_span_seqbegin(struct zone *zone) -{ - return 0; -} -static inline int zone_span_seqretry(struct zone *zone, unsigned iv) -{ - return 0; -} -static inline void zone_span_writelock(struct zone *zone) {} -static inline void zone_span_writeunlock(struct zone *zone) {} -static inline void zone_seqlock_init(struct zone *zone) {} - -static inline int mhp_notimplemented(const char *func) -{ - printk(KERN_WARNING "%s() called, with CONFIG_MEMORY_HOTPLUG disabled\n", func); - dump_stack(); - return -ENOSYS; -} - -static inline void register_page_bootmem_info_node(struct pglist_data *pgdat) -{ -} - -static inline void lock_memory_hotplug(void) {} -static inline void unlock_memory_hotplug(void) {} - -#endif /* ! CONFIG_MEMORY_HOTPLUG */ - -#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) -{ - return 0; -} -#endif /* CONFIG_MEMORY_HOTREMOVE */ - -extern int mem_online_node(int nid); -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 */ |