linux-kernel - Re: [PATCH 1/4 V3 ] futex,plist: pass the real head of the priority list to plist

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Date:	Wed, 22 Dec 2010 08:22:48 -0800
From:	Darren Hart <dvhart@...ux.intel.com>
To:	Lai Jiangshan <laijs@...fujitsu.com>
CC:	Peter Zijlstra <peterz@...radead.org>,
	John Kacur <jkacur@...hat.com>,
	James Bottomley <James.Bottomley@...e.de>,
	Ingo Molnar <mingo@...e.hu>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Namhyung Kim <namhyung@...il.com>,
	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH 1/4 V3 ] futex,plist: pass the real head of the priority
 list to plist_del()

On 12/22/2010 01:02 AM, Lai Jiangshan wrote:
> On 12/22/2010 02:50 PM, Darren Hart wrote:
>> On 12/21/2010 10:18 PM, Lai Jiangshan wrote:
>>> On 12/22/2010 03:13 AM, Darren Hart wrote:
>>>> On 12/21/2010 01:55 AM, Lai Jiangshan wrote:
>>>>
>>>> Hi Lai,
>>>>
>>>> Looks about ready to me, only a couple of more nitpics from me.
>>>>
>>>
>>> Fixed, thanks.
>>
>> Looks good to me. How did the futextest runs go?
>>
>
> It's OK, the result are almost the same.
>
> kernel version: 2.6.37-rc6-tip
> Intel(R) Pentium(R) D CPU 2.80GHz
> MemTotal:         961208 kB
>

This is futex_wait.c I presume? Delta looks to be in the realm of 
statistical noise to me. I'll ack the two patches.

--
Darren

> # diff result result.applied -u | grep '^[+-]'
> --- result	2010-12-22 16:57:45.000000000 +0800
> +++ result.applied	2010-12-22 16:56:39.000000000 +0800
> -Result: 12048 Kiter/s
> +Result: 12210 Kiter/s
> -Result: 4037 Kiter/s
> +Result: 3554 Kiter/s
> -Result: 3331 Kiter/s
> +Result: 3347 Kiter/s
> -Result: 2996 Kiter/s
> +Result: 3124 Kiter/s
> -Result: 2998 Kiter/s
> +Result: 3087 Kiter/s
> -Result: 2894 Kiter/s
> +Result: 3008 Kiter/s
> -Result: 2863 Kiter/s
> +Result: 2882 Kiter/s
> -Result: 3098 Kiter/s
> +Result: 3265 Kiter/s
> -Result: 2888 Kiter/s
> +Result: 2811 Kiter/s
> -Result: 2876 Kiter/s
> +Result: 2995 Kiter/s
> -Result: 2893 Kiter/s
> +Result: 2980 Kiter/s
> -Result: 3100 Kiter/s
> +Result: 2860 Kiter/s
> -Result: 2915 Kiter/s
> +Result: 2964 Kiter/s
> -Result: 2940 Kiter/s
> +Result: 3035 Kiter/s
> -Result: 2671 Kiter/s
> +Result: 2939 Kiter/s


-- 
Darren Hart
Yocto Linux Kernel
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