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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-04-10 06:01:59 -0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-04-10 06:01:59 -0400
commitbe770021011f00bd6220c87876292053221ca5f1 (patch)
tree004a568289a595082119064edf07503170153c19 /Documentation/power
parente5e02de0665ef2477e7a018193051387c6fe0fbc (diff)
parentf321c9cbf3bbf86f6e6153419eaf93ad085e3d74 (diff)
Merge back earlier suspend/hibernate material for v4.1.
Diffstat (limited to 'Documentation/power')
-rw-r--r--Documentation/power/basic-pm-debugging.txt10
1 files changed, 6 insertions, 4 deletions
diff --git a/Documentation/power/basic-pm-debugging.txt b/Documentation/power/basic-pm-debugging.txt
index edeecd447d23..b96098ccfe69 100644
--- a/Documentation/power/basic-pm-debugging.txt
+++ b/Documentation/power/basic-pm-debugging.txt
@@ -75,12 +75,14 @@ you should do the following:
75# echo platform > /sys/power/disk 75# echo platform > /sys/power/disk
76# echo disk > /sys/power/state 76# echo disk > /sys/power/state
77 77
78Then, the kernel will try to freeze processes, suspend devices, wait 5 seconds, 78Then, the kernel will try to freeze processes, suspend devices, wait a few
79resume devices and thaw processes. If "platform" is written to 79seconds (5 by default, but configurable by the suspend.pm_test_delay module
80parameter), resume devices and thaw processes. If "platform" is written to
80/sys/power/pm_test , then after suspending devices the kernel will additionally 81/sys/power/pm_test , then after suspending devices the kernel will additionally
81invoke the global control methods (eg. ACPI global control methods) used to 82invoke the global control methods (eg. ACPI global control methods) used to
82prepare the platform firmware for hibernation. Next, it will wait 5 seconds and 83prepare the platform firmware for hibernation. Next, it will wait a
83invoke the platform (eg. ACPI) global methods used to cancel hibernation etc. 84configurable number of seconds and invoke the platform (eg. ACPI) global
85methods used to cancel hibernation etc.
84 86
85Writing "none" to /sys/power/pm_test causes the kernel to switch to the normal 87Writing "none" to /sys/power/pm_test causes the kernel to switch to the normal
86hibernation/suspend operations. Also, when open for reading, /sys/power/pm_test 88hibernation/suspend operations. Also, when open for reading, /sys/power/pm_test