fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / kernel / power / power.h

diff --git a/kernel/power/power.h b/kernel/power/power.h
index 1cefcf8..eb461b8 100644 (file)
--- 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   = {                             \
@@ -38,12 +40,11 @@ extern struct subsystem power_subsys;
 /* References to section boundaries */
 extern const void __nosave_begin, __nosave_end;
 
-extern struct pbe *pagedir_nosave;
-
 /* Preferred image size in bytes (default 500 MB) */
 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);
@@ -83,16 +84,6 @@ struct snapshot_handle {
        unsigned int    prev;   /* number of the block of PAGE_SIZE bytes that
                                 * was the current one previously
                                 */
-       struct pbe      *pbe;   /* PBE that corresponds to 'buffer' */
-       struct pbe      *last_pbe;      /* When the image is restored (eg. read
-                                        * from disk) we can store some image
-                                        * data directly in the page frames
-                                        * in which they were before suspend.
-                                        * In such a case the PBEs that
-                                        * correspond to them will be unused.
-                                        * This is the last PBE, so far, that
-                                        * does not correspond to such data.
-                                        */
        void            *buffer;        /* address of the block to read from
                                         * or write to
                                         */
@@ -111,9 +102,21 @@ struct snapshot_handle {
  */
 #define data_of(handle)        ((handle).buffer + (handle).buf_offset)
 
+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);
-int snapshot_image_loaded(struct snapshot_handle *handle);
+extern void snapshot_write_finalize(struct snapshot_handle *handle);
+extern int snapshot_image_loaded(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)
@@ -127,7 +130,14 @@ int snapshot_image_loaded(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
@@ -151,7 +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);
@@ -163,3 +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 *);