netdev - Re: [patch 2/2] qlcnic: using too much stack

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Date:	Mon, 09 Aug 2010 20:39:06 -0700
From:	Joe Perches <joe@...ches.com>
To:	Anirban Chakraborty <anirban.chakraborty@...gic.com>
Cc:	Dan Carpenter <error27@...il.com>,
	Amit Salecha <amit.salecha@...gic.com>,
	Linux Driver <Linux-Driver@...gic.com>,
	"David S. Miller" <davem@...emloft.net>,
	Sucheta Chakraborty <sucheta.chakraborty@...gic.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: Re: [patch 2/2] qlcnic: using too much stack

On Mon, 2010-08-09 at 20:31 -0700, Anirban Chakraborty wrote:
> On Aug 10, 2010, at 7:33 AM, Joe Perches wrote:
> > On Mon, 2010-08-09 at 18:43 -0700, Anirban Chakraborty wrote:
> >> Your patch is fine except that the preferred way is to use kzalloc over kaclloc. kzalloc does not need that extra
> >> argument that you are passing to kcalloc.
> > You probably meant to write "my preferred way"
> > as the kcalloc to "kzalloc with a multiply"
> > ratio is pretty high.
> I was suggesting based on the following:
> http://lwn.net/Articles/147014/

Note that article suggests kzalloc for allocating
a single zeroed object.

kcalloc is used for multiple zeroed objects and
protects against oversized allocations.


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