xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Introduce CONFIG_SUSPEND for suspend-to-Ram and standby

Browse Source 
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>
This commit is contained in:
Rafael J. Wysocki
2007-07-29 23:27:18 +02:00
committed by Linus Torvalds
parent b0cb1a19d0
commit 296699de6b
17 changed files with 164 additions and 86 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/linux/freezer.h
View File

@@ -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 */