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authorSungEun Kim <cleaneye.kim@lge.com>2015-07-03 08:57:20 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-07-14 21:04:48 +0200
commit6ce12a977b7e484540482febe47d1e65f7427abf (patch)
tree2f8abc2e11c35e0c399dd1b1701564853eb10f55 /Documentation/power/runtime_pm.txt
parentLinux 4.2-rc2 (diff)
downloadlinux-6ce12a977b7e484540482febe47d1e65f7427abf.tar.xz
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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>
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