[Suspend2][ 20/20] [Suspend2] Prepare image header file

Nigel Cunningham
2006-06-26T22:36:00Z

Header file for image preparation routines and exported functions.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

kernel/power/prepare_image.h | 92 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 92 insertions(+), 0 deletions(-)

diff --git a/kernel/power/prepare_image.h b/kernel/power/prepare_image.h
new file mode 100644
index 0000000..912f570
--- /dev/null
+++ b/kernel/power/prepare_image.h
@@ -0,0 +1,92 @@
+/*
+ * kernel/power/prepare_image.h
+ *
+ * Copyright (C) 2003-2006 Nigel Cunningham <nigel@suspend.net>
+ *
+ * This file is released under the GPLv2.
+ *
+ */
+
+extern int suspend_prepare_image(void);
+extern void suspend_recalculate_image_contents(int storage_available);
+extern long real_nr_free_pages(void);
+extern long image_size_limit;
+extern long pageset1_sizelow, pageset2_sizelow;
+
+struct pageset_sizes_result {
+ long size1; /* Can't be unsigned - breaks MAX function */
+ long size1low;
+ long size2;
+ long size2low;
+};
+
+#ifdef CONFIG_CRYPTO
+extern int suspend_expected_compression_ratio(void);
+#else
+static inline int suspend_expected_compression_ratio(void)
+{
+ return 0;
+};
+#endif
+
+#define MIN_FREE_RAM 2000
+#define MIN_EXTRA_PAGES_ALLOWANCE 500
+
+extern long extra_pd1_pages_allowance;
+extern long storage_needed(int use_ecr, int ignore_extra_p1_allowance);
+extern long ram_to_suspend(void);
+
+#ifdef CONFIG_DEBUG_RODATA
+extern char __start_rodata, __end_rodata;
+
+static inline struct page* rodata_start_page(void)
+{
+ return virt_to_page(&__start_rodata);
+}
+
+static inline struct page* rodata_end_page(void)
+{
+ return virt_to_page(&__end_rodata);
+}
+
+#else
+static inline struct page* rodata_start_page(void)
+{
+ return NULL;
+}
+
+static inline struct page* rodata_end_page(void)
+{
+ return NULL;
+}
+#endif
+
+#ifdef CONFIG_PPC
+extern char _etext[];
+
+static inline struct page* rotext_start_page(void)
+{
+ return virt_to_page(PAGE_OFFSET);
+}
+#else
+extern char _text[], _etext[];
+static inline struct page* rotext_start_page(void)
+{
+ return virt_to_page(_text);
+}
+#endif
+
+static inline struct page* rotext_end_page(void)
+{
+ return virt_to_page(_etext);
+}
+
+static inline struct page* nosave_start_page(void)
+{
+ return virt_to_page(&__nosave_begin);
+}
+
+static inline struct page* nosave_end_page(void)
+{
+ return virt_to_page(&__nosave_end);