linux-kernel - Re: [sched/balance] INFO: possible recursive locking detected

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Message-ID: <5321739B.1000506@linaro.org>
Date:	Thu, 13 Mar 2014 17:00:11 +0800
From:	Alex Shi <alex.shi@...aro.org>
To:	Fengguang Wu <fengguang.wu@...el.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [sched/balance] INFO: possible recursive locking detected

On 03/13/2014 04:53 PM, Fengguang Wu wrote:
> On Thu, Mar 13, 2014 at 03:43:11PM +0800, Alex Shi wrote:
>> On 03/03/2014 10:25 PM, Fengguang Wu wrote:
>>> Greetings,
>>>
>>> I got the below dmesg and the first bad commit is
>>>
>>> https://github.com/alexshi/power-scheduling.git single-balance.bak
>>> commit 2adc591a5cb6768ad11e63be9011906aa171148d
>>> Author:     Alex Shi <alex.shi@...aro.org>
>>> AuthorDate: Fri Feb 28 15:25:09 2014 +0800
>>> Commit:     Alex Shi <alex.shi@...aro.org>
>>> CommitDate: Sun Mar 2 09:16:38 2014 +0800
>>>
>>>     sched/balance: replace new_idle_balance
>>>     
>>>     Curren idle_balance will pull task on half of this group. That is
>>>     not needed in central balance.
>>
>>
>> Thanks for your testing, Fengguang!
>>
>> I fixed this issue and updated to the git tree. Is the single-balance
>> branch still in your performance radar? :)
> 
> Sure, however you know it's costly to queue tests for one single tree.
> If your trees are directly based on -rcX kernels, that would cut the
> tests required for comparison by half.

Thanks a lot! I will keep in mind for this point.
rebased on rc6 kernel for that branch. :)

Thanks again for generous help!

-- 
Thanks
    Alex
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