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

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Message-ID: <51EBAC79.5090606@gmx.de>
Date:	Sun, 21 Jul 2013 11:40:09 +0200
From:	Toralf Förster <toralf.foerster@....de>
To:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
CC:	"Rafael J. Wysocki" <rjw@...k.pl>, viresh.kumar@...aro.org,
	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 07/21/2013 10:43 AM, Srivatsa S. Bhat wrote:
> 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?

What's about the additional patch Rafael adviced me in this thread:
https://patchwork.kernel.org/patch/2827512/
?

On my ThinkPad T420 I do have to apply this on top of 3.10.1 otherwise I
do suffer from the hang during s2ram.

>>>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
> 
> 
> 


-- 
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3
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