fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / linux / suspend.h

diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 2bf0d5f..bf99bd4 100644 (file)
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -6,38 +6,18 @@
 #endif
 #include <linux/swap.h>
 #include <linux/notifier.h>
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/pm.h>
 
-/* page backup entry */
-typedef struct pbe {
-       unsigned long address;          /* address of the copy */
-       unsigned long orig_address;     /* original address of page */
-       swp_entry_t swap_address;       
-
-       struct pbe *next;       /* also used as scratch space at
-                                * end of page (see link, diskpage)
-                                */
-} suspend_pagedir_t;
-
-#define for_each_pbe(pbe, pblist) \
-       for (pbe = pblist ; pbe ; pbe = pbe->next)
-
-#define PBES_PER_PAGE      (PAGE_SIZE/sizeof(struct pbe))
-#define PB_PAGE_SKIP       (PBES_PER_PAGE-1)
-
-#define for_each_pb_page(pbe, pblist) \
-       for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next)
-
-
-#define SWAP_FILENAME_MAXLENGTH        32
-
-
-extern dev_t swsusp_resume_device;
-   
-/* mm/vmscan.c */
-extern int shrink_mem(void);
+/* struct pbe is used for creating lists of pages that should be restored
+ * atomically during the resume from disk, because the page frames they have
+ * occupied before the suspend are in use.
+ */
+struct pbe {
+       void *address;          /* address of the copy */
+       void *orig_address;     /* original address of a page */
+       struct pbe *next;
+};
 
 /* mm/page_alloc.c */
 extern void drain_local_pages(void);
@@ -47,29 +27,32 @@ extern void mark_free_pages(struct zone *zone);
 /* kernel/power/swsusp.c */
 extern int software_suspend(void);
 
+#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
 extern int pm_prepare_console(void);
 extern void pm_restore_console(void);
-
+#else
+static inline int pm_prepare_console(void) { return 0; }
+static inline void pm_restore_console(void) {}
+#endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */
 #else
 static inline int software_suspend(void)
 {
        printk("Warning: fake suspend called\n");
-       return -EPERM;
+       return -ENOSYS;
 }
-#endif
-
-#ifdef CONFIG_SMP
-extern void disable_nonboot_cpus(void);
-extern void enable_nonboot_cpus(void);
-#else
-static inline void disable_nonboot_cpus(void) {}
-static inline void enable_nonboot_cpus(void) {}
-#endif
+#endif /* CONFIG_PM */
 
 void save_processor_state(void);
 void restore_processor_state(void);
 struct saved_context;
 void __save_processor_state(struct saved_context *ctxt);
 void __restore_processor_state(struct saved_context *ctxt);
+unsigned long get_safe_page(gfp_t gfp_mask);
+
+/*
+ * XXX: We try to keep some more pages free so that I/O operations succeed
+ * without paging. Might this be more?
+ */
+#define PAGES_FOR_IO   1024
 
 #endif /* _LINUX_SWSUSP_H */