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authorRafael J. Wysocki <rjw@sisk.pl>2007-07-30 01:27:18 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-30 03:45:38 +0400
commit296699de6bdc717189a331ab6bbe90e05c94db06 (patch)
tree53c847ecc8cce11952502921844052e44ca60d5e /drivers/base
parentb0cb1a19d05b8ea8611a9ef48a17fe417f1832e6 (diff)
downloadlinux-296699de6bdc717189a331ab6bbe90e05c94db06.tar.xz
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 'drivers/base')
-rw-r--r--drivers/base/power/Makefile2
-rw-r--r--drivers/base/power/power.h4
2 files changed, 3 insertions, 3 deletions
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index 966a5e287415..9caeaea753a3 100644
--- a/drivers/base/power/Makefile
+++ b/drivers/base/power/Makefile
@@ -1,5 +1,5 @@
obj-y := shutdown.o
-obj-$(CONFIG_PM) += main.o suspend.o resume.o sysfs.o
+obj-$(CONFIG_PM_SLEEP) += main.o suspend.o resume.o sysfs.o
obj-$(CONFIG_PM_TRACE) += trace.o
ifeq ($(CONFIG_DEBUG_DRIVER),y)
diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h
index 591a0dd5deee..8ba0830cbc03 100644
--- a/drivers/base/power/power.h
+++ b/drivers/base/power/power.h
@@ -5,7 +5,7 @@
extern void device_shutdown(void);
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
/*
* main.c
@@ -62,7 +62,7 @@ extern int resume_device(struct device *);
*/
extern int suspend_device(struct device *, pm_message_t);
-#else /* CONFIG_PM */
+#else /* CONFIG_PM_SLEEP */
static inline int device_pm_add(struct device * dev)