Messages in this thread | | | Subject | Re: Resume only part of device tree? | From | Nigel Cunningham <> | Date | Thu, 04 Mar 2004 13:48:46 +1300 |
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Hi.
My implementation saved the image in two parts. 'Pageset 2' contains the LRU pages (active & inactive lists). 'Pageset 1' contains all other data to be saved. At resume time, I read pageset 1 and copy the original kernel data back. Then I want to resume the storage devices and read pageset 2 before resuming all devices and waking everything else up. It would also be good to not resume all devices when writing the state to the swap partition, but I have other means of ensuring the consistency of the image that mean I'm not so worried then.
Regards,
Nigel
On Thu, 2004-03-04 at 11:40, Benjamin Herrenschmidt wrote: > On Thu, 2004-03-04 at 07:03, Nigel Cunningham wrote: > > Hi all. > > > > Is there any existing code in the device model that supports resuming a > > part of the device tree? For Suspend2, I'm wanting to resume storage > > devices (and their parents) part way through resuming, and other drivers > > later. > > What is your exact goal ? Not resuming all devices when writing the > state to the swap partition ? > > You really need to resume it all at this point. However, the optimisation > that can be done is for some drivers to not put the HW to sleep on a > swsusp transition, only freeze the state. I did something like that in > IDE though that doesn't always work well due our "state" paremeter passed > down to drivers not beeing consistent. > > Ben. > --
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