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authorRafael J. Wysocki <rjw@sisk.pl>2007-07-29 23:27:18 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-29 16:45:38 -0700
commit296699de6bdc717189a331ab6bbe90e05c94db06 (patch)
tree53c847ecc8cce11952502921844052e44ca60d5e /include/linux/freezer.h
parentb0cb1a19d05b8ea8611a9ef48a17fe417f1832e6 (diff)
downloadop-kernel-dev-296699de6bdc717189a331ab6bbe90e05c94db06.zip
op-kernel-dev-296699de6bdc717189a331ab6bbe90e05c94db06.tar.gz
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/freezer.h')
-rw-r--r--include/linux/freezer.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/freezer.h b/include/linux/freezer.h
index c8e02de..efded00 100644
--- a/include/linux/freezer.h
+++ b/include/linux/freezer.h
@@ -5,7 +5,7 @@
#include <linux/sched.h>
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
/*
* Check if a process has been frozen
*/
@@ -126,7 +126,7 @@ static inline void set_freezable(void)
current->flags &= ~PF_NOFREEZE;
}
-#else
+#else /* !CONFIG_PM_SLEEP */
static inline int frozen(struct task_struct *p) { return 0; }
static inline int freezing(struct task_struct *p) { return 0; }
static inline void set_freeze_flag(struct task_struct *p) {}
@@ -143,6 +143,6 @@ static inline void freezer_do_not_count(void) {}
static inline void freezer_count(void) {}
static inline int freezer_should_skip(struct task_struct *p) { return 0; }
static inline void set_freezable(void) {}
-#endif
+#endif /* !CONFIG_PM_SLEEP */
#endif /* FREEZER_H_INCLUDED */
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