linux-kernel - Re: [PATCH] dynamic_debug: Remove unnecessary _

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Date:	Thu, 18 Oct 2012 12:59:46 -0700
From:	Joe Perches <joe@...ches.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	Jason Baron <jbaron@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dynamic_debug: Remove unnecessary __used

On Thu, 2012-10-18 at 12:40 -0700, Greg KH wrote:
> On Thu, Oct 18, 2012 at 12:07:03PM -0700, Joe Perches wrote:
> > The __used attribute prevents gcc from eliminating
> > unnecessary, otherwise optimized away, metadata for
> > debugging logging messages.
> > 
> > Remove the __used attribute.
> 
> Very cool.  Any idea how much space this saves?

Dunno, it's been a while since I did an allyesconfig on my
netbook, my recollection is that was a few hundred kb.

https://lkml.org/lkml/2012/5/17/340


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