linux-kernel - Re: [PATCH 3.10 00/26] 3.10.31-stable review

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Message-id: <530634F2.3010600@samsung.com>
Date:	Thu, 20 Feb 2014 10:01:38 -0700
From:	Shuah Khan <shuah.kh@...sung.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	dirk.j.brandewie@...el.com
Cc:	Xishi Qiu <qiuxishi@...wei.com>, linux-kernel@...r.kernel.org,
	n-horiguchi@...jp.nec.com, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, stable@...r.kernel.org,
	"shuahkhan@...il.com" <shuahkhan@...il.com>,
	Shuah Khan <shuah.kh@...sung.com>
Subject: Re: [PATCH 3.10 00/26] 3.10.31-stable review

On 02/20/2014 06:39 AM, Shuah Khan wrote:
> On 02/20/2014 12:30 AM, Xishi Qiu wrote:
>> On 2014/2/20 8:29, Shuah Khan wrote:
>>
>>> On 02/18/2014 03:46 PM, Greg Kroah-Hartman wrote:
>>>> This is the start of the stable review cycle for the 3.10.31 release.
>>>> There are 26 patches in this series, all will be posted as a response
>>>> to this one.  If anyone has any issues with these being applied, please
>>>> let me know.
>>>>
>>>> Responses should be made by Thu Feb 20 22:45:20 UTC 2014.
>>>> Anything received after that time might be too late.
>>>>
>>>> The whole patch series can be found in one patch at:
>>>>
>>>> kernel.org/pub/linux/kernel/v3.0/stable-review/patch-3.10.31-rc1.gz
>>>> and the diffstat can be found below.
>>>>
>>>> thanks,
>>>>
>>>> greg k-h
>>>>
>>>
>>> Compile and boot tests passed on AMD system. Boot failed on Intel
>>> systems. I think the following changes are the suspect, so far by
>>> process of elimination - these two aren't in 3.12 and 3.13
>>>
>>> #    modified:   mm/hugetlb.c
>>> #    modified:   mm/memory-failure.c
>>>
>>> However, my strong suspect is the following:
>>>
>>> Xishi Qiu <qiuxishi@...wei.com>
>>>      mm: fix process accidentally killed by mce because of huge page
>>> migration
>>>
>>> I don't see how this could cause problems, none the less, I will test
>>> without these changes and let you know.
>>>
>>>
>>> Naoya Horiguchi <n-horiguchi@...jp.nec.com>
>>>      mm/memory-failure.c: fix memory leak in successful soft offlining
>>>
>>> I will test without these changes and let you know.
>>>
>>> -- Shuah
>>>
>>
>> Hi Shuah
>>
>> I tested on my system, it boot successfully.
>>
>> hardware: Intel(R) Xeon(R) CPU E5-2420 0 @ 1.90GHz
>> OS: v3.10.30 + the two patches
>>
>> Thanks,
>> Xishi Qiu
>
> Xishi,
>
> I tested without your patch and still see the issue. My wild guess
> wasn't a good one :) I am starting git bisect now.
>
> -- Shuah
>
>

ok I have it isolated to the following patch:

Dirk Brandewie <dirk.j.brandewie@...el.com>
     intel_pstate: Take core C0 time into account for core busy calculation

From: Dirk Brandewie <dirk.j.brandewie@...el.com>

commit fcb6a15c2e7e76d493e6f91ea889ab40e1c643a4 upstream.

Take non-idle time into account when calculating core busy time.
This ensures that intel_pstate will notice a decrease in load.

Boots just fine without this change.

-- Shuah

-- 
Shuah Khan
Senior Linux Kernel Developer - Open Source Group
Samsung Research America(Silicon Valley)
shuah.kh@...sung.com | (970) 672-0658
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