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    SubjectRe: [PATCH v2 2/3] Mutually exclude cpu online and suspend/hibernate
    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.


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