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From: Tejun Heo <tj@kernel.org>
To: Pedro Ribeiro <pedrib@gmail.com>
Cc: linux-ide@vger.kernel.org, "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: Long delays while hibernating
Date: Sat, 26 Dec 2009 10:26:55 +0900	[thread overview]
Message-ID: <4B35665F.20001@kernel.org> (raw)
In-Reply-To: <74fd948d0912251010y2bba5bd6nf7aa3a34a7946c31@mail.gmail.com>

(cc'ing Rafael)

On 12/26/2009 03:10 AM, Pedro Ribeiro wrote:
>> Oh... Can you please try this one then?
> 
> Sorry, still hangs with this patch :(
> 
> This only happens in hibernation... suspend is fine.

Hmmm... the patch does apply to both suspend and hibernation.  Rafael,
Pedro's ThinkPad T400 burns cpu cycle for 30secs on "Atomic
copy/restore" step of hibernation if the ultrabay is powered off.  The
original report can be found at...

  http://thread.gmane.org/gmane.linux.ide/44190

Please note that it's with TuxOnIce patches.  Anyways, ata_piix on
certain configurations have similar issues where after the OS is done
suspending and powering off the piix controller, the BIOS tries to
access it and ends up burning cpu cycles which can be worked around by
leaving the controller on after suspend.  Applying the same workaround
didn't resolve the issue.  Do you know what can make cpu burn for
30secs on the atomic copy/restore step?

Pedro, can you please try to reproduce the problem without TuxOnIce
patches?

Thanks.

-- 
tejun

  reply	other threads:[~2009-12-26  1:25 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-23  3:50 Long delays while hibernating Pedro Ribeiro
2009-12-23  7:47 ` Tejun Heo
2009-12-23 13:50   ` Pedro Ribeiro
2009-12-24  7:45     ` Tejun Heo
2009-12-24 14:34       ` Pedro Ribeiro
2009-12-24 15:59         ` Pedro Ribeiro
2009-12-25 14:56           ` Tejun Heo
2009-12-25 18:10             ` Pedro Ribeiro
2009-12-26  1:26               ` Tejun Heo [this message]
2009-12-26 16:32                 ` Pedro Ribeiro
2009-12-26 21:21                   ` Rafael J. Wysocki
2009-12-26 22:35                     ` Pedro Ribeiro
2009-12-27 14:09                       ` Rafael J. Wysocki
2009-12-27 17:59                         ` Pedro Ribeiro

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