linux-kernel - Re: [PATCH 0/8] Cpufreq, cpu hotplug, suspend/resume related fixes

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Message-ID: <51EB9F3E.70608@linux.vnet.ibm.com>
Date:	Sun, 21 Jul 2013 14:13:42 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>, viresh.kumar@...aro.org
CC:	Toralf Förster <toralf.foerster@....de>,
	robert.jarzmik@...el.com, durgadoss.r@...el.com,
	tianyu.lan@...el.com, lantianyu1986@...il.com,
	dirk.brandewie@...il.com, stern@...land.harvard.edu,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/8] Cpufreq, cpu hotplug, suspend/resume related fixes

On 07/17/2013 09:19 PM, Srivatsa S. Bhat wrote:
> On 07/17/2013 08:57 PM, Toralf Förster wrote:
>> On 07/16/2013 11:32 PM, Rafael J. Wysocki wrote:
>>> On Tuesday, July 16, 2013 05:15:14 PM Toralf Förster wrote:
[...]
>>>> sry - here again with full quote of the email :
>>>>
>>>> I applied patch [1/8] on top of v3.11-rc1-8-g47188d3 passes two s2ram/wakeup
>>>> cycles fine and crashed the system at the 3rd attempt / one times just at
>>>> the 4th (blinking power led, no sysrq, ...).
>>>>
>>>> Applying patch 1-8 on top of that tree differs in that way that it
>>>> crashes now the system even at the 1st attempt or at least at the 2nd
>>>>
>>>> My hardware is a ThinkPad T420 with latest BIOS and a 32 bit stable
>>>> Gentoo Linux - FWIW .config attached.
>>>
>>> I think you'll need the fixes first, basically [1/8] from this series and
>>> this: https://patchwork.kernel.org/patch/2827512/ .
>>>
>>> Please try to run with these two things applied only and see how that goes.
>>>
>>> Thanks,
>>> Rafael
>>>
>>>
>> That was it.
>>
>> Applying https://patchwork.kernel.org/patch/2827512/ and then patch
>> [1/8] on top of v3.11-rc1-8-g47188d3 works fine and solved the reported
>> issue.
>>
>> Furthermore applying patches 2-8 works too - suspend/wakeup works fine
>> and frequencies are scaled right after wakeup at the T420.
>>
> 
> Phew! Finally :-)
> 
> Thank you for all your testing efforts!
> 

Rafael, Viresh, any thoughts on picking up patches 2-8 from this series
for 3.12?

>From the discussions on this thread so far, there are no pending issues:
Toralf verified that these patches work fine on his system, as he mentioned
above, and Tianyu Lan independently tested this patchset and found no
issues with them. Also, Viresh analyzed the refcounting used in the patches
and we came to the conclusion that there is no problem with them either.

 
Regards,
Srivatsa S. Bhat


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