Re: problems about ACPI sysfs convert work

Zhang Rui
2006-11-22T07:50:25Z

On Wed, 2006-11-22 at 09:28 +0800, Shaohua Li wrote:
> On Mon, 2006-11-20 at 12:18 +0100, Thomas Renninger wrote:
> > On Mon, 2006-11-20 at 18:10 +0800, Zhang, Rui wrote:
> > > Hello, lists
> > > I’m doing the ACPI sysfs convert work now. And I have some problems when duplicating some procfs interfaces to sysfs.
> > > Under driver model (this will be available soon), files under /proc/acpi/xxx(driver)/yyy(device)/ will be duplicated under /sys/device/ as they are properties of individual devices.
> > > But I still have some trouble on dealing with the files under /prco/acpi, including “alarm”, “sleep”, “wakeup”, “debug_layer”, “debug_level”, “dsdt”, “fadt”, “event” and “info”.
> > > Following is a proposal as well as some problem and I’m not quite sure about the places all these attributes should be located at. I wish to get some advice from you, and any comment is welcome☺.
> > >
> > > 1. Where should “alarm” be located? Another problem is whether we should put a duration into this file instead of a future time.
> > Don't know, never used...
> > > 2. “sleep” is already marked as deprecated because /sys/power/state has the same function. I won’t do the repeated work again.
> > Yep.
> > > 3. “wakeup” should not exist, but be an attribute of individual devices kobjects.
> > Maybe the devices can be linked
> > like /sys/.../wakeup/${links_to_wakeup_devices}
> > So that userspace does not need to search over the whole device tree to
> > find them?
Sounds great. I'll have a try.
> Sounds like a good idea. But this should be done in driver core. Other
> devices like pci might support wakeup too. device declaims to support
> wakeup, and driver core create a link to /sys/.../wakeup/xxx. I'd
> suggest don't do this in acpi part.
>
Yes. That makes sense. But I don't want too many files to be involved,
especially at the beginning. :). This should be done in another patch in
the future if everything goes well.

Thanks,
Ray