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Message-Id: <200912170230.24147.rjw@sisk.pl>
Date: Thu, 17 Dec 2009 02:30:24 +0100
From: "Rafael J. Wysocki" <rjw@...k.pl>
To: Alan Stern <stern@...land.harvard.edu>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Zhang Rui <rui.zhang@...el.com>,
LKML <linux-kernel@...r.kernel.org>,
ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: Async suspend-resume patch w/ completions (was: Re: Async suspend-resume patch w/ rwsems)
On Thursday 17 December 2009, Rafael J. Wysocki wrote:
> On Thursday 17 December 2009, Alan Stern wrote:
> > On Wed, 16 Dec 2009, Rafael J. Wysocki wrote:
> >
> > > I've just put the first set of data, for the HP nx6325 at:
> > > http://www.sisk.pl/kernel/data/nx6325/
> > >
> > > The *-dmesg.log files contain full dmesg outputs starting from a cold boot and
> > > including one suspend-resume cycle in each case, with debug_initcall enabled.
> > >
> > > The *-suspend.log files are excerpts from the *-dmesg.log files containing
> > > the suspend messages only, and analogously for *-resume.log.
> >
> > I've just started looking at the sync-suspend.log file. What are all
> > the '+' characters and " @ 3368" strings after the device names?
>
> I think the + is necessary for the Arjan's graph-generating script and the
> @ number is the value of current (ie. the PID of the calling task).
>
> > You didn't print out the parent name for each device, so the tree
> > structure has been lost.
>
> That's because the original Arjan's patch doesn't do that, I'm adding it
> right now.
>
> > Why do those "sd 0:0:0:0 [sda]" messages appear in between two
> > callbacks? The cache-synchronization and the spin-down commands are
> > not executed asynchronously.
>
> Because the data are incomplete. :-(
>
> I've just realized that the Arjan's patch only covers bus types and classes
> that have been converted to dev_pm_ops already, so I'm extending it to the
> "legacy" ones at the moment.
New data files have been uploaded to:
http://www.sisk.pl/kernel/data/nx6325/
http://www.sisk.pl/kernel/data/wind/
Please let me know if you need more information.
Rafael
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