diff options
Diffstat (limited to 'kernel/power/power.h')
| -rw-r--r-- | kernel/power/power.h | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h index bfe999f7b272..eb461b816bf4 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -22,7 +22,9 @@ static inline int pm_suspend_disk(void) return -EPERM; } #endif -extern struct semaphore pm_sem; + +extern struct mutex pm_mutex; + #define power_attr(_name) \ static struct subsys_attribute _name##_attr = { \ .attr = { \ @@ -42,6 +44,7 @@ extern const void __nosave_begin, __nosave_end; extern unsigned long image_size; extern int in_suspend; extern dev_t swsusp_resume_device; +extern sector_t swsusp_resume_block; extern asmlinkage int swsusp_arch_suspend(void); extern asmlinkage int swsusp_arch_resume(void); @@ -102,8 +105,18 @@ struct snapshot_handle { extern unsigned int snapshot_additional_pages(struct zone *zone); extern int snapshot_read_next(struct snapshot_handle *handle, size_t count); extern int snapshot_write_next(struct snapshot_handle *handle, size_t count); +extern void snapshot_write_finalize(struct snapshot_handle *handle); extern int snapshot_image_loaded(struct snapshot_handle *handle); -extern void snapshot_free_unused_memory(struct snapshot_handle *handle); + +/* + * This structure is used to pass the values needed for the identification + * of the resume swap area from a user space to the kernel via the + * SNAPSHOT_SET_SWAP_AREA ioctl + */ +struct resume_swap_area { + loff_t offset; + u_int32_t dev; +} __attribute__((packed)); #define SNAPSHOT_IOC_MAGIC '3' #define SNAPSHOT_FREEZE _IO(SNAPSHOT_IOC_MAGIC, 1) @@ -117,7 +130,14 @@ extern void snapshot_free_unused_memory(struct snapshot_handle *handle); #define SNAPSHOT_FREE_SWAP_PAGES _IO(SNAPSHOT_IOC_MAGIC, 9) #define SNAPSHOT_SET_SWAP_FILE _IOW(SNAPSHOT_IOC_MAGIC, 10, unsigned int) #define SNAPSHOT_S2RAM _IO(SNAPSHOT_IOC_MAGIC, 11) -#define SNAPSHOT_IOC_MAXNR 11 +#define SNAPSHOT_PMOPS _IOW(SNAPSHOT_IOC_MAGIC, 12, unsigned int) +#define SNAPSHOT_SET_SWAP_AREA _IOW(SNAPSHOT_IOC_MAGIC, 13, \ + struct resume_swap_area) +#define SNAPSHOT_IOC_MAXNR 13 + +#define PMOPS_PREPARE 1 +#define PMOPS_ENTER 2 +#define PMOPS_FINISH 3 /** * The bitmap is used for tracing allocated swap pages @@ -141,7 +161,7 @@ struct bitmap_page { extern void free_bitmap(struct bitmap_page *bitmap); extern struct bitmap_page *alloc_bitmap(unsigned int nr_bits); -extern unsigned long alloc_swap_page(int swap, struct bitmap_page *bitmap); +extern sector_t alloc_swapdev_block(int swap, struct bitmap_page *bitmap); extern void free_all_swap_pages(int swap, struct bitmap_page *bitmap); extern int swsusp_check(void); @@ -153,3 +173,7 @@ extern int swsusp_read(void); extern int swsusp_write(void); extern void swsusp_close(void); extern int suspend_enter(suspend_state_t state); + +struct timeval; +extern void swsusp_show_speed(struct timeval *, struct timeval *, + unsigned int, char *); |