Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [suspend/resume] Re: userspace notification from module | Date | Sat, 16 Jan 2010 23:31:15 +0100 |
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On Saturday 16 January 2010, Pavel Machek wrote: > > > IMHO it should just plain shutdown in that case. Suspending doesn't really > > > solve the problem, because the battery is going to drain still. Unless you > > > mean suspend=hibernate, but I guess you don't. > > BTW I was talking spitz before, but there's collie, too. It was > shipped in configuration where all user data was in RAM and RAMdisk -- > no writable flash. On such machine, shutdown is never option. (And > yes, such design was very common in windowsCE days). > > Spitz got disk, but inherited that powermanagement design; and it > works very well. > > And now, if you want collie for a year (or two), you can have > mine... it still works and battery still lasted for 5 hours 2 years > ago -- not bad for 10 year old battery. You'll note that it is very > different design from PC.
Well, I guess I wouldn't have the time to study it anyway, so thanks. :-)
All in all, it looks like these particular platforms are just specific design having special requirements. And even on these platforms sending a battery critical notification to the user space before the kernel emergency suspends (or shuts down or whatever) the system seems to be a good idea in general.
Rafael
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