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

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Date:	Thu, 18 Oct 2012 14:02:36 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Jason Baron <jbaron@...hat.com>
Cc:	Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dynamic_debug: Remove unnecessary __used

On Thu, Oct 18, 2012 at 03:20:08PM -0400, Jason Baron 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.
> > 
> > Signed-off-by: Joe Perches <joe@...ches.com>
> > ---
> >  include/linux/dynamic_debug.h | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
> > index c18257b..6dd4787 100644
> > --- a/include/linux/dynamic_debug.h
> > +++ b/include/linux/dynamic_debug.h
> > @@ -61,7 +61,7 @@ int __dynamic_netdev_dbg(struct _ddebug *descriptor,
> >  			 const char *fmt, ...);
> >  
> >  #define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt)		\
> > -	static struct _ddebug __used __aligned(8)		\
> > +	static struct _ddebug  __aligned(8)			\
> >  	__attribute__((section("__verbose"))) name = {		\
> >  		.modname = KBUILD_MODNAME,			\
> >  		.function = __func__,				\
> > 
> > 
> 
> Greg, Pls pull this.

I will, thanks.

greg "here, have a vowel or three" k-h
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