Re: [PATCH 0/8] Suspend block api (version 6)

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On Mon, 2010-05-17 at 22:24 +0100, Matthew Garrett wrote:
> On Mon, May 17, 2010 at 11:16:52PM +0200, Linus WALLEIJ wrote:
> > Maybe I'm misunderstanding something basic here, but when you say frozen,
> > are you referring to freezer control groups
> > Documentation/cgroups/freezer-subsystem.txt?
> > 
> > I was more thinking about something new, that isn't freezing anything.
> > The only purpose would be to group the stuff that CPUidle can ignore,
> > and let CPUidle ignore it, so that the system can still be idled.
> 
> So they'd be on the runqeue but wouldn't factor into cpuidle's 
> calculations of when the next wakeup should be? Ok. I think that still 
> leaves you with the same problem - you're not scheduling that task, so 
> how do you know to execute it when a network packet is received? I think 
> you also still have the race condition.

Couldn't you special case the network packet situation ? Like the idle
loop could take into account that there are packets flowing through the
networking stack that may need to get handled.

Daniel

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