linux-kernel - Re: [PATCH -v9 00/31] use lmb with x86

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Date:	Mon, 29 Mar 2010 16:47:00 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	michael@...erman.id.au, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH -v9 00/31] use lmb with x86

On 03/29/2010 04:29 PM, Benjamin Herrenschmidt wrote:
> On Mon, 2010-03-29 at 15:17 -0700, Yinghai Lu wrote:
>>> That was the point of my other mail. We now have two lmb APIs, one
>> which
>>> checks if the array will overflow and one which doesn't. That seems
>> like
>>> a bad idea. Having one called lmb_free() and one called free_lmb()
>> is
>>> definitely a bad idea, because it's completely non obvious which one
>>> caters for overflow.
>>
>> I want to keep the affects to other lmb users to minium at first.
>>
>> and we can merge those functions later.
>>
>> or you insist on merging them in this patchset?
> 
> As a separate patch sure, but you should really separate the patch
> series that changes LMB from the one that moves x86 to it imho. It would
> make things much clearer.

Those patches should go through tip/x86 ?

Please check the patches only have "lmb:" in the subject.

> 
> It would also allow you to spend some time properly -documenting- why
> you need to change LMB the way you do, since it's non obvious for those
> not familiar with x86 needs. I'm not objecting to the changes, I'm just
> asking for much better documentation as to why they are needed and what
> function they provide.

Thanks, will try to write more changelog for next reversion.

Yinghai
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