From: joe@perches.com (Joe Perches)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arch/arm/mach-pxa/stargate2.c: use ARRAY_AND_SIZE consistently
Date: Sat, 10 Aug 2013 08:59:46 -0700 [thread overview]
Message-ID: <1376150386.2083.26.camel@joe-AO722> (raw)
In-Reply-To: <alpine.DEB.2.02.1308101735060.2076@localhost6.localdomain6>
On Sat, 2013-08-10 at 17:38 +0200, Julia Lawall wrote:
> On Sat, 10 Aug 2013, Joe Perches wrote:
> > On Sat, 2013-08-10 at 17:25 +0200, Julia Lawall wrote:
> > > From: Julia Lawall <Julia.Lawall@lip6.fr>
> > > Because ARRAY_AND_SIZE changes the apparent arity of a function, if it is
> > > used for one call to a given function, it would be better, if possible, to
> > > use it for all of them.
> > I think it'd be better to remove ARRAY_AND_SIZE instead.
>
> I can do that, if it is wanted, but there are over 200 uses, and I think
> it is a little bit positive in that it ensures that the array is passed
> along with its own size.
Maybe, but if it's generally accepted that it's useful,
and I'm a little dubious because it does hide argument
count in functions where it's used, the 6 #defines should
be centralized in kernel.h
$ git grep "define.*ARRAY_AND_SIZE"
arch/arm/mach-kirkwood/common.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
arch/arm/mach-mmp/common.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
arch/arm/mach-pxa/generic.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
arch/arm/mach-ux500/db8500-regs.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
drivers/pinctrl/pinctrl-lantiq.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
sound/soc/pxa/mioa701_wm9713.c:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
A small counter-argument against using ARRAY_AND_SIZE:
clkdev_add_table has 60+ uses, only 6 of those with
ARRAY_AND_SIZE.
I think it makes it difficult to do some cocinelle/spatch
transform on clkdev_add_table.
next prev parent reply other threads:[~2013-08-10 15:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-10 15:25 [PATCH] arch/arm/mach-pxa/stargate2.c: use ARRAY_AND_SIZE consistently Julia Lawall
2013-08-10 15:32 ` Joe Perches
2013-08-10 15:38 ` Julia Lawall
2013-08-10 15:59 ` Joe Perches [this message]
2013-08-10 17:49 ` walter harms
2013-08-10 22:33 ` Dan Carpenter
2013-08-11 5:48 ` Julia Lawall
2013-08-11 7:34 ` walter harms
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