On Nov 19, 2009, at 9:12 AM, Enrico Zini <enr...@enricozini.org> wrote:
> On Thu, Nov 19, 2009 at 05:58:22AM -0800, Dan Nicholson wrote: > >>> Is it possible for a resume script in pm-utils to say "Ok, I took >>> care >>> of it, don't bother running the rest, let's go back to sleep" ? >> >> The bulk of the resume is handed in the kernel. pm-utils just adds a >> little bit on top to pull it all together and has nothing to do with >> actually resuming the hardware. If you really need to block a resume, >> it should happen in the kernel. You could write a hook that >> immediately suspends again, but it would be a pretty nasty user >> experience. > > Sorry, maybe I haven't been clear enough. > > There is a need to resume and do something in user space, and I don't > see how dealing it in kernel would help: one example was to read the > fix > from the GPS and write it in a file, then go back to sleep. As Dan said, right now it is all or nothing. Pm-utils knows how to abort a suspend before it hits the kernel, but it has no idea how to abort a resume and go back to sleep - it is not a use case we designed for. > However, upon resume pm-utils will run the various scripts in /etc/ > pm in > order. The idea would be to have a hook, say, 80-openmoko, that tells > pm-utils: "forget it, we need to go back to sleep". And at that point > pm-utils will: > 1. stop running further resume scripts > 2. start running suspend hooks starting from the one that canceled the > resume 80-openmoko > 3. suspend again It seems like a reasonable request, nut it is not obvious how to implement it in a general way. > > This would allow to deal with the special resume reason without > running > all scripts up the chain and then down again. This could give a > considerable gain in reaction time and power consumption. > > I guess from your reply that it's not currently possible to do so. > If I tried to look into implementing such a feature, would it be > considered worth having? Depends on how clean the code is. :) > > Ciao, > > Enrico > > -- > GPG key: 4096R/E7AD5568 2009-05-08 Enrico Zini <enr...@enricozini.org> > _______________________________________________ > Pm-utils mailing list > Pm-utils@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/pm-utils _______________________________________________ Pm-utils mailing list Pm-utils@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/pm-utils
