linux-kernel - RE: question on devm

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Date:	Wed, 8 Aug 2012 12:08:10 +0530
From:	Venu Byravarasu <vbyravarasu@...dia.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: question on devm_kfree

> -----Original Message-----
> From: Lars-Peter Clausen [mailto:lars@...afoo.de]
> Sent: Wednesday, August 08, 2012 12:00 PM
> To: Venu Byravarasu
> Cc: linux-kernel@...r.kernel.org
> Subject: Re: question on devm_kfree
> 
> On 08/08/2012 07:56 AM, Venu Byravarasu wrote:
> > As per comments related to devm_kzalloc, memory allocated using it is
> > freed automatically.
> > However there is a function called devm_kfree, comment section of which
> > says that it is used to free memory allocated using devm_kzalloc().
> > If memory allocated by devm_kzalloc is freed automatically, what's the
> > need & significance of devm_kfree?
> >
> > Thanks,
> > Venu
> >
> 
> Hi,
> 
> Memory allocated with devm_kzalloc is freed at the end of the lifetime of the
> device it is attached to. If you for some reason want to free allocated with
> memory devm_kzalloc before that of the lifetime of the device can use
> devm_kfree.
> 
> 
> - Lars
 
Thanks Lars.
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