Re: [PATCH 1/3] PM: Introduce new top level suspend andhibernation callbacks (rev. 8)

From: Benjamin Herrenschmidt
Date: Mon Apr 14 2008 - 16:55:00 EST



On Mon, 2008-04-14 at 10:51 -0400, Alan Stern wrote:
> On Sun, 13 Apr 2008, David Brownell wrote:
>
> > I sort of agree. Looking at it from a whole-system perspective,
> > suspending needs to be able to chitchat with userspace ... and I
> > don't think that can be done *before* writing to /sys/power/state
> > in an acceptably generic/portable way. (Briefly, applications
> > need to have clean stopping points and be able to arrange system
> > wakeup. They may well have more work to do than most drivers.)
>
> Pavel's recent work aside, the only way to initiate a system sleep is
> from userspace. So it seems natural for all application notifications
> to be made by the initiating program, perhaps via dbus.

No. Certainly not via dbus.

Ben.


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