Messages in this thread | | | Date | Fri, 13 Aug 2010 08:29:12 -0700 | From | "Paul E. McKenney" <> | Subject | Re: Attempted summary of suspend-blockers LKML thread, take three |
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On Fri, Aug 13, 2010 at 11:57:51AM +0100, Alan Cox wrote: > > > Think in terms of an ARM laptop. What good is opportunistic suspend if > > > it's not going to help when the laptop is being used? > > > > For when the laptop is not being used, presumably. > > Or in time between keystrokes for most of the platform (backlight > excepted). The Intel MID x86 devices are at the point that suspend/resume > time on x86 is being hurt by the kernel rewriting smp alternatives as we > go from 2 processors live to 1 and back.
Given that you are talking about going from 2 processors to 1 and back, I would guess that you are not actually talking about suspend/resume, which is a system-wide thing rather than a CPU-by-CPU thing. I am not sure whether you are using CPU hotplug or invoking SMP alternatives once all but one CPU is idle.
Can't say that I can tell exactly what pit you are digging for me here. ;-)
Thanx, Paul
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