bc17c02a85
Add API log_wakeup_reason() and expose it to userspace via sysfs path /sys/kernel/wakeup_reasons/last_resume_reason Bug: 120445600 Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com> [AmitP: Folded following android-4.9 commit changes into this patch 1135122a192a ("ANDROID: POWER: fix compile warnings in log_wakeup_reason") b4e6247778b0 ("ANDROID: Power: Changes the permission to read only for sysfs file /sys/kernel/wakeup_reasons/last_resume_reason") e13dbc7c69cd ("ANDROID: power: wakeup_reason: rename irq_count to irqcount")] Signed-off-by: Amit Pundir <amit.pundir@linaro.org> [astrachan: Folded the following changes into this patch: 39d7c7fe91c0 ("ANDROID: power: wakeup_reason: Add guard condition for maximum wakeup reasons") 0730434bdf49 ("ANDROID: power: wakeup_reason: Avoids bogus error messages for the suspend aborts.") 4e42dceae54e ("ANDROID: power: wakeup_reason: Adds functionality to log the last suspend abort reason.") f21313b70ac7 ("ANDROID: power: wakeup_reason: Report suspend times from last_suspend_time") f97ec34442ac ("ANDROID: power: wakeup_reason: fix suspend time reporting") cd92df73e504 ("ANDROID: power: wakeup: Add last wake up source logging for suspend abort reason.") 546b6ae3c087 ("ANDROID: power: wakeup: Add the guard condition for len in pm_get_active_wakeup_sources") 1453d9ffcdbe ("ANDROID: power: wakeup_reason: make logging work in an interrupt context.")] Change-Id: I81addaf420f1338255c5d0638b0d244a99d777d1 Signed-off-by: Alistair Strachan <astrachan@google.com>
16 lines
651 B
Plaintext
16 lines
651 B
Plaintext
What: /sys/kernel/wakeup_reasons/last_resume_reason
|
|
Date: February 2014
|
|
Contact: Ruchi Kandoi <kandoiruchi@google.com>
|
|
Description:
|
|
The /sys/kernel/wakeup_reasons/last_resume_reason is
|
|
used to report wakeup reasons after system exited suspend.
|
|
|
|
What: /sys/kernel/wakeup_reasons/last_suspend_time
|
|
Date: March 2015
|
|
Contact: jinqian <jinqian@google.com>
|
|
Description:
|
|
The /sys/kernel/wakeup_reasons/last_suspend_time is
|
|
used to report time spent in last suspend cycle. It contains
|
|
two numbers (in seconds) separated by space. First number is
|
|
the time spent in suspend and resume processes. Second number
|
|
is the time spent in sleep state. |