On Thu, Feb 5, 2009 at 2:02 AM, Pavel Machek <pavel@xxxxxx> wrote:
> ...so I guess I'll wait for extended description.
PM: wakelock: Abort task freezing if a wakelock is locked.
If a wakelock is locked, suspend will fail anyway. Since try_to_freeze_tasks
can take up to 20 seconds to complete or fail, aborting as soon as someone
locks a wakelock (e.g. from an interrupt handler) improves the worst case
wakeup latency.
On an older kernel where task freezing could fail for processes attached
to a debugger, this fixed a problem where the device sometimes hung for
20 seconds before the screen turned on.
--
Arve Hjønnevåg
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