Messages in this thread | | | Date | Thu, 6 May 2010 19:44:18 +0100 | From | Matthew Garrett <> | Subject | Re: [linux-pm] [PATCH 1/8] PM: Add suspend block api. |
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On Thu, May 06, 2010 at 11:33:35AM -0700, Tony Lindgren wrote: > * 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.
And the untrusted userspace code that's waiting for a network packet? Adding a few seconds of latency isn't an option here.
-- Matthew Garrett | mjg59@srcf.ucam.org
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