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.
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
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?
Ciao,
Enrico
--
GPG key: 4096R/E7AD5568 2009-05-08 Enrico Zini <enr...@enricozini.org>
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