linux/Documentation/power
Li Fei 957d1282bb suspend: enable freeze timeout configuration through sys
At present, the value of timeout for freezing is 20s, which is
meaningless in case that one thread is frozen with mutex locked
and another thread is trying to lock the mutex, as this time of
freezing will fail unavoidably.
And if there is no new wakeup event registered, the system will
waste at most 20s for such meaningless trying of freezing.

With this patch, the value of timeout can be configured to smaller
value, so such meaningless trying of freezing will be aborted in
earlier time, and later freezing can be also triggered in earlier
time. And more power will be saved.
In normal case on mobile phone, it costs real little time to freeze
processes. On some platform, it only costs about 20ms to freeze
user space processes and 10ms to freeze kernel freezable threads.

Signed-off-by: Liu Chuansheng <chuansheng.liu@intel.com>
Signed-off-by: Li Fei <fei.li@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-02-09 22:32:48 +01:00
..
regulator regulator: Update regulator_register() API signature in Documentation 2012-04-13 09:54:45 +01:00
00-INDEX PM / Documentation: Update docs about suspend and CPU hotplug 2011-10-22 00:22:28 +02:00
apm-acpi.txt Documentation: update broken web addresses. 2010-08-04 15:21:40 +02:00
basic-pm-debugging.txt PM / Documentation: Fix spelling mistake in basic-pm-debugging.txt 2012-01-19 23:22:38 +01:00
charger-manager.txt charger-manager: Provide cm_notify_event function for in-kernel use 2012-05-05 19:51:58 -07:00
devices.txt PM / Documentation: fix typos in power management description 2012-07-03 18:32:51 +02:00
drivers-testing.txt PM: Fix references to basic-pm-debugging.txt in drivers-testing.txt 2010-12-24 15:02:41 +01:00
freezing-of-tasks.txt suspend: enable freeze timeout configuration through sys 2013-02-09 22:32:48 +01:00
interface.txt PM / Hibernate: Make default image size depend on total RAM size 2010-10-17 01:57:43 +02:00
notifiers.txt PM: Allow drivers to allocate memory from .prepare() callbacks safely 2011-05-17 23:26:00 +02:00
opp.txt PM / OPP: Introduce function to free cpufreq table 2011-07-15 23:58:18 +02:00
pci.txt PM/PCI: Update PCI power management documentation 2010-05-18 15:01:58 -07:00
pm_qos_interface.txt PM / QoS: Introduce PM QoS device flags support 2012-10-23 01:09:12 +02:00
power_supply_class.txt power_supply: Add support for CHARGE_CONTROL_* attributes 2012-11-17 20:21:43 -08:00
runtime_pm.txt PM / Runtime: Add new helper function: pm_runtime_active() 2013-01-26 00:39:12 +01:00
s2ram.txt PM: Add sysfs attr for rechecking dev hash from PM trace 2010-10-17 01:57:50 +02:00
states.txt PM: Documentation/power/states.txt: fix repetition 2011-03-15 00:43:17 +01:00
suspend-and-cpuhotplug.txt PM / Documentation: suspend-and-cpuhotplug.txt: Fix typo 2012-05-05 21:52:51 +02:00
swsusp-and-swap-files.txt typo fixes 2007-10-20 01:34:40 +02:00
swsusp-dmcrypt.txt [PATCH] swsusup with dm-crypt mini howto 2005-09-05 00:06:17 -07:00
swsusp.txt doc: fix broken utf8 encoding 2012-09-01 10:24:06 -07:00
tricks.txt update email address 2010-07-19 10:56:54 +02:00
userland-swsusp.txt doc: fix broken references 2011-09-27 18:08:04 +02:00
video_extension.txt [PATCH] acpi: fix video docs 2005-06-25 16:24:32 -07:00
video.txt Documentation: update broken web addresses. 2010-08-04 15:21:40 +02:00