[PATCH] swsusp: use less memory during resume

[mv-sheeva.git] / kernel / power / power.h

diff --git a/kernel/power/power.h b/kernel/power/power.h
index 5d1abffbb9ce3619d8e34be6e9aa50c538dde92d..98c41423f3b1013fd889c5b059056abc0ff5850a 100644 (file)
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -8,6 +8,7 @@ struct swsusp_info {
        int                     cpus;
        unsigned long           image_pages;
        unsigned long           pages;
+       unsigned long           size;
 } __attribute__((aligned(PAGE_SIZE)));
 
 
@@ -54,7 +55,7 @@ struct snapshot_handle {
        unsigned int    page;
        unsigned int    page_offset;
        unsigned int    prev;
-       struct pbe      *pbe;
+       struct pbe      *pbe, *last_pbe;
        void            *buffer;
        unsigned int    buf_offset;
 };
@@ -65,6 +66,20 @@ 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);
 
+#define SNAPSHOT_IOC_MAGIC     '3'
+#define SNAPSHOT_FREEZE                        _IO(SNAPSHOT_IOC_MAGIC, 1)
+#define SNAPSHOT_UNFREEZE              _IO(SNAPSHOT_IOC_MAGIC, 2)
+#define SNAPSHOT_ATOMIC_SNAPSHOT       _IOW(SNAPSHOT_IOC_MAGIC, 3, void *)
+#define SNAPSHOT_ATOMIC_RESTORE                _IO(SNAPSHOT_IOC_MAGIC, 4)
+#define SNAPSHOT_FREE                  _IO(SNAPSHOT_IOC_MAGIC, 5)
+#define SNAPSHOT_SET_IMAGE_SIZE                _IOW(SNAPSHOT_IOC_MAGIC, 6, unsigned long)
+#define SNAPSHOT_AVAIL_SWAP            _IOR(SNAPSHOT_IOC_MAGIC, 7, void *)
+#define SNAPSHOT_GET_SWAP_PAGE         _IOR(SNAPSHOT_IOC_MAGIC, 8, void *)
+#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
+
 /**
  *     The bitmap is used for tracing allocated swap pages
  *
@@ -90,6 +105,10 @@ extern struct bitmap_page *alloc_bitmap(unsigned int nr_bits);
 extern unsigned long alloc_swap_page(int swap, struct bitmap_page *bitmap);
 extern void free_all_swap_pages(int swap, struct bitmap_page *bitmap);
 
+extern unsigned int count_special_pages(void);
+extern int save_special_mem(void);
+extern int restore_special_mem(void);
+
 extern int swsusp_check(void);
 extern int swsusp_shrink_memory(void);
 extern void swsusp_free(void);
@@ -98,3 +117,4 @@ extern int swsusp_resume(void);
 extern int swsusp_read(void);
 extern int swsusp_write(void);
 extern void swsusp_close(void);
+extern int suspend_enter(suspend_state_t state);