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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2007-07-29 23:27:18 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-29 16:45:38 -0700 |
| commit | 296699de6bdc717189a331ab6bbe90e05c94db06 (patch) | |
| tree | 53c847ecc8cce11952502921844052e44ca60d5e /include/linux/suspend.h | |
| parent | b0cb1a19d05b8ea8611a9ef48a17fe417f1832e6 (diff) | |
| download | linux-296699de6bdc717189a331ab6bbe90e05c94db06.tar.gz linux-296699de6bdc717189a331ab6bbe90e05c94db06.tar.bz2 linux-296699de6bdc717189a331ab6bbe90e05c94db06.zip | |
Introduce CONFIG_SUSPEND for suspend-to-Ram and standby
Introduce CONFIG_SUSPEND representing the ability to enter system sleep
states, such as the ACPI S3 state, and allow the user to choose SUSPEND
and HIBERNATION independently of each other.
Make HOTPLUG_CPU be selected automatically if SUSPEND or HIBERNATION has
been chosen and the kernel is intended for SMP systems.
Also, introduce CONFIG_PM_SLEEP which is automatically selected if
CONFIG_SUSPEND or CONFIG_HIBERNATION is set and use it to select the
code needed for both suspend and hibernation.
The top-level power management headers and the ACPI code related to
suspend and hibernation are modified to use the new definitions (the
changes in drivers/acpi/sleep/main.c are, mostly, moving code to reduce
the number of ifdefs).
There are many other files in which CONFIG_PM can be replaced with
CONFIG_PM_SLEEP or even with CONFIG_SUSPEND, but they can be updated in
the future.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/suspend.h')
| -rw-r--r-- | include/linux/suspend.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h index d16c1b85d512..388cace9751f 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -24,7 +24,7 @@ struct pbe { extern void drain_local_pages(void); extern void mark_free_pages(struct zone *zone); -#if defined(CONFIG_PM) && defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) +#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) extern int pm_prepare_console(void); extern void pm_restore_console(void); #else @@ -54,7 +54,6 @@ struct hibernation_ops { void (*restore_cleanup)(void); }; -#ifdef CONFIG_PM #ifdef CONFIG_HIBERNATION /* kernel/power/snapshot.c */ extern void __register_nosave_region(unsigned long b, unsigned long e, int km); @@ -82,6 +81,7 @@ static inline void hibernation_set_ops(struct hibernation_ops *ops) {} static inline int hibernate(void) { return -ENOSYS; } #endif /* CONFIG_HIBERNATION */ +#ifdef CONFIG_PM_SLEEP void save_processor_state(void); void restore_processor_state(void); struct saved_context; @@ -106,7 +106,7 @@ static inline int unregister_pm_notifier(struct notifier_block *nb) { .notifier_call = fn, .priority = pri }; \ register_pm_notifier(&fn##_nb); \ } -#else /* CONFIG_PM */ +#else /* !CONFIG_PM_SLEEP */ static inline int register_pm_notifier(struct notifier_block *nb) { @@ -119,9 +119,9 @@ static inline int unregister_pm_notifier(struct notifier_block *nb) } #define pm_notifier(fn, pri) do { (void)(fn); } while (0) -#endif /* CONFIG_PM */ +#endif /* !CONFIG_PM_SLEEP */ -#if !defined CONFIG_HIBERNATION || !defined(CONFIG_PM) +#ifndef CONFIG_HIBERNATION static inline void register_nosave_region(unsigned long b, unsigned long e) { } |