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SubjectRe: [PATCH v2 2/3] Mutually exclude cpu online and suspend/hibernate
Date
On Thursday, October 13, 2011, Alan Stern wrote:
> On Thu, 13 Oct 2011, Borislav Petkov wrote:
>
> > On Thu, Oct 13, 2011 at 12:06:02PM -0400, Tejun Heo wrote:
> > > I hate to sound like a broken recorder but the above patch isn't
> > > strictly correct for hot-swap cases, right?
> >
> > hpa is working on a ucode loading solution which will take care of your
> > hotswap case too.
>
> You know, it would be a good idea to take a step back and think about a
> broader picture. Suspend and hibernate need to be mutually exclusive
> with other things as well. The two examples which people have been
> talking about are firmware updates (if the computer goes to sleep
> while the firmware is being changed, it ends up as a brick) and battery
> recharging (the CPU needs to respond quickly to temperature and charger
> events).
>
> There ought to be a general-purpose "prevent system sleep" mechanism
> usable both from within the kernel and from userspace.

I have a patch for that ready, will post it later today.

Thanks,
Rafael


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