From: Alex Shi <alex.shi@linaro.org>
To: Fengguang Wu <fengguang.wu@intel.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [sched/balance] INFO: possible recursive locking detected
Date: Thu, 13 Mar 2014 17:00:11 +0800 [thread overview]
Message-ID: <5321739B.1000506@linaro.org> (raw)
In-Reply-To: <20140313085341.GC27627@localhost>
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@linaro.org>
>>> AuthorDate: Fri Feb 28 15:25:09 2014 +0800
>>> Commit: Alex Shi <alex.shi@linaro.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
next prev parent reply other threads:[~2014-03-13 9:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-03 14:25 [sched/balance] INFO: possible recursive locking detected Fengguang Wu
2014-03-07 1:59 ` Alex Shi
2014-03-13 7:43 ` Alex Shi
2014-03-13 8:53 ` Fengguang Wu
2014-03-13 9:00 ` Alex Shi [this message]
2014-03-13 9:06 ` Fengguang Wu
2014-03-14 6:16 ` Fengguang Wu
2014-03-14 6:20 ` [sched] 373e9ec30ad: -11.2% qperf.udp_bw.send_bw.MB_sec Fengguang Wu
2014-03-14 6:26 ` [sched/balance] INFO: possible recursive locking detected Alex Shi
2014-03-14 6:48 ` Fengguang Wu
2014-03-14 7:31 ` Alex Shi
2014-03-14 7:40 ` Fengguang Wu
2014-03-14 8:46 ` Alex Shi
2014-03-14 9:06 ` Fengguang Wu
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