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#ifndef _LINUX_MEMORY_H_
#define _LINUX_MEMORY_H_
#include <linux/node.h>
#include <linux/compiler.h>
#include <linux/mutex.h>
#define MIN_MEMORY_BLOCK_SIZE (1 << SECTION_SIZE_BITS)
struct memory_block {
unsigned long start_section_nr;
unsigned long end_section_nr;
unsigned long state;
int section_count;
struct mutex state_mutex;
int phys_device;
void *hw;
int (*phys_callback)(struct memory_block *);
struct device dev;
};
int arch_get_memory_phys_device(unsigned long start_pfn);
#define MEM_ONLINE (1<<0)
#define MEM_GOING_OFFLINE (1<<1)
#define MEM_OFFLINE (1<<2)
#define MEM_GOING_ONLINE (1<<3)
#define MEM_CANCEL_ONLINE (1<<4)
#define MEM_CANCEL_OFFLINE (1<<5)
struct memory_notify {
unsigned long start_pfn;
unsigned long nr_pages;
int status_change_nid;
};
#define MEM_ISOLATE_COUNT (1<<0)
struct memory_isolate_notify {
unsigned long start_pfn;
unsigned int nr_pages;
unsigned int pages_found;
};
struct notifier_block;
struct mem_section;
#define SLAB_CALLBACK_PRI 1
#define IPC_CALLBACK_PRI 10
#ifndef CONFIG_MEMORY_HOTPLUG_SPARSE
static inline int memory_dev_init(void)
{
return 0;
}
static inline int register_memory_notifier(struct notifier_block *nb)
{
return 0;
}
static inline void unregister_memory_notifier(struct notifier_block *nb)
{
}
static inline int memory_notify(unsigned long val, void *v)
{
return 0;
}
static inline int register_memory_isolate_notifier(struct notifier_block *nb)
{
return 0;
}
static inline void unregister_memory_isolate_notifier(struct notifier_block *nb)
{
}
static inline int memory_isolate_notify(unsigned long val, void *v)
{
return 0;
}
#else
extern int register_memory_notifier(struct notifier_block *nb);
extern void unregister_memory_notifier(struct notifier_block *nb);
extern int register_memory_isolate_notifier(struct notifier_block *nb);
extern void unregister_memory_isolate_notifier(struct notifier_block *nb);
extern int register_new_memory(int, struct mem_section *);
extern int unregister_memory_section(struct mem_section *);
extern int memory_dev_init(void);
extern int remove_memory_block(unsigned long, struct mem_section *, int);
extern int memory_notify(unsigned long val, void *v);
extern int memory_isolate_notify(unsigned long val, void *v);
extern struct memory_block *find_memory_block_hinted(struct mem_section *,
struct memory_block *);
extern struct memory_block *find_memory_block(struct mem_section *);
#define CONFIG_MEM_BLOCK_SIZE (PAGES_PER_SECTION<<PAGE_SHIFT)
enum mem_add_context { BOOT, HOTPLUG };
#endif
#ifdef CONFIG_MEMORY_HOTPLUG
#define hotplug_memory_notifier(fn, pri) { \
static __meminitdata struct notifier_block fn##_mem_nb =\
{ .notifier_call = fn, .priority = pri }; \
register_memory_notifier(&fn##_mem_nb); \
}
#else
#define hotplug_memory_notifier(fn, pri) do { } while (0)
#endif
struct memory_accessor {
ssize_t (*read)(struct memory_accessor *, char *buf, off_t offset,
size_t count);
ssize_t (*write)(struct memory_accessor *, const char *buf,
off_t offset, size_t count);
};
extern struct mutex text_mutex;
#endif
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