linux-kernel - Re: [PATCH 3/3] percpu: little optimization on calculating pcpu_unit

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Date:	Mon, 28 Oct 2013 10:43:01 +0800
From:	Wei Yang <weiyang@...ux.vnet.ibm.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Wei Yang <weiyang@...ux.vnet.ibm.com>, cl@...ux-foundation.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] percpu: little optimization on calculating
 pcpu_unit_size

On Sun, Oct 27, 2013 at 08:36:34AM -0400, Tejun Heo wrote:
>On Mon, Oct 21, 2013 at 04:58:13PM +0800, Wei Yang wrote:
>> pcpu_unit_size exactly equals to ai->unit_size.
>> 
>> This patch assign this value instead of calculating from pcpu_unit_pages. Also
>> it reorder them to make it looks more friendly to audience.
>
>Ditto.  I'd rather not change unless this is clearly better.

This one change an assignement to a shift, which in my mind is a little
faster.

Well, this is just executed once during the boot time, not a big deal.

>
>Thanks.
>
>-- 
>tejun

-- 
Richard Yang
Help you, Help me

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