#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/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)
- */
+ struct pbe *next;
} 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
-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;
-};
-
-#define SUSPEND_PD_PAGES(x) (((x)*sizeof(struct pbe))/PAGE_SIZE+1)
+
+extern dev_t swsusp_resume_device;
/* 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 */
+#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;
}
-#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);
+#endif /* CONFIG_PM */
-extern int pm_prepare_console(void);
-extern void pm_restore_console(void);
-
-#else
-static inline void refrigerator(unsigned long flag) {}
-#endif /* CONFIG_PM */
-
-#ifdef CONFIG_SMP
+#ifdef CONFIG_SUSPEND_SMP
extern void disable_nonboot_cpus(void);
extern void enable_nonboot_cpus(void);
#else
static inline void enable_nonboot_cpus(void) {}
#endif
-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);
-
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 */