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    SubjectRe: [linux-pm] Re: swsusp 'disk' fails in bk-current - intel_agp at fault?
    On Tue, 29 Mar 2005 13:23:35 -0800 (PST), Patrick Mochel
    <mochel@digitalimplant.org> wrote:
    >
    > On Tue, 29 Mar 2005, Pavel Machek wrote:
    >
    > > I don't really want us to try execve during resume... Could we simply
    > > artifically fail that execve with something if (in_suspend()) return
    > > -EINVAL; [except that in_suspend() just is not there, but there were
    > > some proposals to add it].
    > >
    > > Or just avoid calling hotplug at all in resume case? And then do
    > > coldplug-like scan when userspace is ready...
    >
    > I thought that cold-plugging only worked for devices, not all objects.
    >

    It really depens on the script - nothing stops it from traversing
    entire /sys tree and if an object it not exported in the tree I'd say
    userspace should not care about such object anyway.

    > Can we just queue up hotplug events? That way we wouldn't lose any across
    > the transition, and could be used to send resume events to userspace for
    > various devices that need help..
    >

    The point is that at this point any changes to the system state will
    be discarded - we already did the image and about to write it. When we
    resume for real all those events will be regenerated once again.

    --
    Dmitry
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