Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: [RFC] sleepy linux | Date | Wed, 26 Dec 2007 21:23:37 +0100 |
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Am Mittwoch, 26. Dezember 2007 21:17:22 schrieb Pavel Machek: > On Wed 2007-12-26 18:28:04, Oliver Neukum wrote: > > Am Mittwoch, 26. Dezember 2007 00:07:31 schrieb Pavel Machek: > > > Heute 00:07:31 > > > > > > This is RFC. It does not even work for me... it sleeps but it will not > > > wake up, because SATA wakeup code is missing. Code attached for illustration. > > > > > > I wonder if this is the right approach? What is right interface to the > > > drivers? > > > > IMHO you are making to many special cases. The system can be "sleepy" > > if all devices can be runtime suspended and all CPUs are idle. > > Is there an easy way to tell if all the devices are runtime suspended?
Do you really want to know whether they are suspended or whether they could be suspended?
> I guess I need to know from atomic context :-(.
Urgh. suspend() must be able to sleep and can fail.
Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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