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 7e4409b..bf99bd4 100644 (file)
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -1,90 +1,58 @@
 #ifndef _LINUX_SWSUSP_H
 #define _LINUX_SWSUSP_H
 
-#ifdef CONFIG_X86
+#if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32)
 #include <asm/suspend.h>
 #endif
 #include <linux/swap.h>
 #include <linux/notifier.h>
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/pm.h>
 
-#ifdef CONFIG_PM
-/* 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;       
-       swp_entry_t dummy;              /* we need scratch space at 
-                                        * end of page (see link, diskpage)
-                                        */
-} suspend_pagedir_t;
-
-#define SWAP_FILENAME_MAXLENGTH        32
-
-struct suspend_header {
-       u32 version_code;
-       unsigned long num_physpages;
-       char machine[8];
-       char version[20];
-       int num_cpus;
-       int page_size;
-       suspend_pagedir_t *suspend_pagedir;
-       unsigned int num_pbes;
+/* 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;
 };
 
-#define SUSPEND_PD_PAGES(x)     (((x)*sizeof(struct pbe))/PAGE_SIZE+1)
-   
-/* mm/vmscan.c */
-extern int shrink_mem(void);
-
 /* mm/page_alloc.c */
 extern void drain_local_pages(void);
+extern void mark_free_pages(struct zone *zone);
 
+#ifdef CONFIG_PM
 /* kernel/power/swsusp.c */
 extern int software_suspend(void);
 
-extern unsigned int nr_copy_pages __nosavedata;
-extern suspend_pagedir_t *pagedir_nosave __nosavedata;
-
-#else  /* CONFIG_SOFTWARE_SUSPEND */
-static inline int software_suspend(void)
-{
-       printk("Warning: fake suspend called\n");
-       return -EPERM;
-}
-#define software_resume()              do { } while(0)
-#endif /* CONFIG_SOFTWARE_SUSPEND */
-
-
-#ifdef CONFIG_PM
-extern void refrigerator(unsigned long);
-extern int freeze_processes(void);
-extern void thaw_processes(void);
-
+#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
 extern int pm_prepare_console(void);
 extern void pm_restore_console(void);
-
 #else
-static inline void refrigerator(unsigned long flag)
-{
-
-}
-static inline int freeze_processes(void)
-{
-       return 0;
-}
-static inline void thaw_processes(void)
+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 -ENOSYS;
 }
-#endif /* CONFIG_PM */
-
-asmlinkage void do_magic(int is_resume);
-asmlinkage void do_magic_resume_1(void);
-asmlinkage void do_magic_resume_2(void);
-asmlinkage void do_magic_suspend_1(void);
-asmlinkage void do_magic_suspend_2(void);
+#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 */