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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-04-10 12:01:59 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-04-10 12:01:59 +0200 |
| commit | be770021011f00bd6220c87876292053221ca5f1 (patch) | |
| tree | 004a568289a595082119064edf07503170153c19 /Documentation/power | |
| parent | Merge tag 'pm+acpi-4.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff) | |
| parent | PM / watchdog: iTCO: stop watchdog during system suspend (diff) | |
| download | linux-be770021011f00bd6220c87876292053221ca5f1.tar.xz linux-be770021011f00bd6220c87876292053221ca5f1.zip | |
Merge back earlier suspend/hibernate material for v4.1.
Diffstat (limited to 'Documentation/power')
| -rw-r--r-- | Documentation/power/basic-pm-debugging.txt | 10 |
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: # echo platform > /sys/power/disk # echo disk > /sys/power/state -Then, the kernel will try to freeze processes, suspend devices, wait 5 seconds, -resume devices and thaw processes. If "platform" is written to +Then, the kernel will try to freeze processes, suspend devices, wait a few +seconds (5 by default, but configurable by the suspend.pm_test_delay module +parameter), resume devices and thaw processes. If "platform" is written to /sys/power/pm_test , then after suspending devices the kernel will additionally invoke the global control methods (eg. ACPI global control methods) used to -prepare the platform firmware for hibernation. Next, it will wait 5 seconds and -invoke the platform (eg. ACPI) global methods used to cancel hibernation etc. +prepare the platform firmware for hibernation. Next, it will wait a +configurable number of seconds and invoke the platform (eg. ACPI) global +methods used to cancel hibernation etc. Writing "none" to /sys/power/pm_test causes the kernel to switch to the normal hibernation/suspend operations. Also, when open for reading, /sys/power/pm_test |