SungEun Kim 6ce12a977b PM / autosleep: Use workqueue for user space wakeup sources garbage collector ...

The synchronous synchronize_rcu() in wakeup_source_remove() makes
user process which writes to /sys/kernel/wake_unlock blocked sometimes.

For example, when android eventhub tries to release a wakelock, this
blocking process can occur, and eventhub can't get input events
for a while.

Using a work item instead of direct function call at pm_wake_unlock()
can prevent this unnecessary delay from happening.

Signed-off-by: SungEun Kim <cleaneye.kim@lge.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2015-07-14 21:04:48 +02:00

5.7 KiB

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