Re: [PATCH 0/8] device async action mechanism

[Zhang Rui]

On Wed, 2009-07-15 at 08:29 +0800, Pavel Machek wrote:
> Hi!
> 
> I notice you are still ccing my @suse.cz address. That one no longer
> works :-(. 
> 
> > this is the patch set I made to speed up the device
> > suspend/resume/shutdown process.
> > 
> > A new mechanism called Device Async Actions is introduced in this patch set.
> > The basic idea is that,
> > 1. device declares to support certain kinds of device async action,
> >    like suspend, resume, shutdown, etc.
> > 2. a async domain is create for this device
> > 3. the child device inherits the async domain
> > 4. devices in the same domain suspend/resume/shutdown asynchronously with
> >    the other devices.
> > 
> > Currently, in order to make sure that it won't bring any side effects,
> > I only convert the ACPI battery and i8042 to use this framework, which reduces
> > 0.5s+ S3 time(suspend time plus resume time)???, from 7.0s to less than 6.5s.
> > and about 0.5s shutdown time in my test.
> 
> Hmm, 7seconds is still quite long. What hw is that?
> 
7 seconds including both kernel suspend and resume time.
it takes about 3.2s to suspend and 3.8 seconds to resume.

thanks,
rui

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