Messages in this thread | | | Date | Thu, 6 May 2010 11:33:35 -0700 | From | Tony Lindgren <> | Subject | Re: [linux-pm] [PATCH 1/8] PM: Add suspend block api. |
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* Matthew Garrett <mjg@redhat.com> [100506 10:39]: > On Thu, May 06, 2010 at 10:38:08AM -0700, Tony Lindgren wrote: > > > If your userspace keeps polling and has runaway timers, then you > > could suspend it's parent process to idle the system? > > If your userspace is suspended, how does it process the events that > generated a system wakeup? If we had a good answer to that then suspend > blockers would be much less necessary.
Well if your hardware runs off-while-idle or even just retention-while-idle, then the basic shell works just fine waking up every few seconds or so.
Then you could keep init/shell/suspend policy deamon running until it's time to suspend the whole device. To cut down runaway timers, you could already freeze the desktop/GUI/whatever earlier.
Regards,
Tony
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