linux-kernel - Re: [PATCH UPDATED] percpu: use dynamic percpu allocator as the default percpu allocator

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Message-ID: <alpine.DEB.1.10.0904141233420.15948@qirst.com>
Date:	Tue, 14 Apr 2009 12:48:14 -0400 (EDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	rusty@...tcorp.com.au, tglx@...utronix.de, x86@...nel.org,
	linux-kernel@...r.kernel.org, hpa@...or.com,
	Paul Mundt <lethal@...ux-sh.org>, rmk@....linux.org.uk,
	starvik@...s.com, ralf@...ux-mips.org, davem@...emloft.net,
	cooloney@...nel.org, kyle@...artin.ca, matthew@....cx,
	grundler@...isc-linux.org, takata@...ux-m32r.org,
	benh@...nel.crashing.org, rth@...ddle.net,
	ink@...assic.park.msu.ru, heiko.carstens@...ibm.com,
	Nick Piggin <npiggin@...e.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH UPDATED] percpu: use dynamic percpu allocator as the
 default percpu allocator

On Tue, 14 Apr 2009, Ingo Molnar wrote:

> The thing is, i spent well in excess of an hour analyzing your
> patch, counting cachelines, looking at effects and interactions,
> thinking about the various implications. I came up with a good deal
> of factoids, a handful of suggestions and a few summary paragraphs:
>
>   http://marc.info/?l=linux-kernel&m=123862536011780&w=2

Good work.

> A proper reply to that work would be one of several responses:
>

...

>
>   3) agree with the factoids and disagree with my opinion.

Yep I thought that what I did...

> Furthermore, you also tried to 'win' this argument by increasing the
> volume of shouting, by injecting unprovoked insults and by using a
> patronizing and irritated tone.

Win an argument? I want to restore the function of __read_mostly to what
it was intended. It seems that you wanted instead to tag labels on all
sorts of variables in the kernel that show their usage pattern.

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