linux-kernel - Re: [PATCH 0/2] Common struct clk implementation, v14

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Date:	Thu, 14 Apr 2011 18:08:48 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Jeremy Kerr <jeremy.kerr@...onical.com>,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	linux-sh@...r.kernel.org, Sascha Hauer <s.hauer@...gutronix.de>,
	Paul Mundt <lethal@...ux-sh.org>, linux-kernel@...r.kernel.org,
	Dima Zavin <dmitriyz@...gle.com>,
	Saravana Kannan <skannan@...eaurora.org>,
	Ben Dooks <ben-linux@...ff.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 0/2] Common struct clk implementation, v14

On Thu, Apr 14, 2011 at 11:32:00AM +0100, Russell King - ARM Linux wrote:
> On Thu, Apr 14, 2011 at 08:25:05PM +1000, Benjamin Herrenschmidt wrote:
> > On Thu, 2011-04-14 at 11:00 +0100, Russell King - ARM Linux wrote:
> > > 
> > > I will take it, but at the moment I'm rather unhappy about the response
> > > from the community to Linus' complaint.
> > > 
> > > If existing platform maintainers can show that moving over to this will
> > > result in a net reduction of code under arch/arm, then that will be good.
> > > What I don't want to see at the moment is arch/arm increasing in size as
> > > a result of any change.  We desperately need to see a reduction for the
> > > next merge window.
> > 
> > It's a chicken and egg... platform maintainers wait for you to take it
> > and you wait for them to take it :-)
> > 
> > It seems to me that this fits well into the category of "better common
> > abstractions" that was discussed in the thread initiated by Linus as one
> > of the ways to improve on the "clutter"...
> 
> That depends - sometimes creating generic stuff results in a net increase
> in the overall size, and that's something that Linus also complained about.
> 
> According to linux-next, where we are at the moment with arch/arm is a
> net increase of 6000 lines since the close of the last merge window,
> and arch/arm is responsible for almost 75% of arch/ changes.  It looks
> very much like the same situation which Linus complained about.
Well, looking at the output of

	git diff --dirstat=3 linus/master...next/master -- arch

(with linus/master == 85f2e689a and next/master == 9e06a6ea7) I think
the main culprit is 12dc7eff5 that moved arch/arm/mach-mx3 to
arch/arm/mach-imx. (75 files changed, 9783 insertions(+), 9731
deletions(-)) That's a part of the effort to consolidate the i.MX
platforms and allow to compile more SoCs in a single image.

That commit accounts for more than the half of the (loc) changes in
arch/arm.

OK, this doesn't discuss away the 6000 added lines, but at least the
percentage thingy. And I think when you point out this commit Linus will
be much quiter when replying to your pull request.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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