linux-kernel - Re: [PATCH] cgroup: Avoid a memset by using vzalloc

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Date:	Wed, 03 Nov 2010 08:48:04 -0700
From:	Joe Perches <joe@...ches.com>
To:	jovi zhang <bookjovi@...il.com>
Cc:	Christoph Lameter <cl@...ux.com>, Jesper Juhl <jj@...osbits.net>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Minchan Kim <minchan.kim@...il.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Paul Menage <menage@...gle.com>,
	Li Zefan <lizf@...fujitsu.com>,
	containers@...ts.linux-foundation.org
Subject: Re: [PATCH] cgroup: Avoid a memset by using vzalloc

On Wed, 2010-11-03 at 23:20 +0800, jovi zhang wrote:
> On Wed, Nov 3, 2010 at 10:38 PM, Christoph Lameter <cl@...ux.com> wrote:
> > On Mon, 1 Nov 2010, Jesper Juhl wrote:
> >
> >> On Sun, 31 Oct 2010, Balbir Singh wrote:
> >
> >> > > There are so many placed need vzalloc.
> >> > > Thanks, Jesper.
> >
> >
> > Could we avoid this painful exercise with a "semantic patch"?

There's an existing cocci kmalloc/memset script.

Perhaps this is good enough?

cp scripts/coccinelle/api/alloc/kzalloc-simple.cocci scripts/coccinelle/api/alloc/vzalloc-simple.cocci
sed -i -e 's/kmalloc/vmalloc/g' -e 's/kzalloc/vzalloc/g' scripts/coccinelle/api/alloc/vzalloc-simple.cocci




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