linux-kernel - Re: "N" symbols and System.map

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Message-ID: <20090605223728.GP29008@uranus.ravnborg.org>
Date:	Sat, 6 Jun 2009 00:37:28 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	"H. Peter Anvin" <hpa@...ux.intel.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org
Subject: Re: "N" symbols and System.map

On Fri, Jun 05, 2009 at 03:28:16PM -0700, H. Peter Anvin wrote:
> Sam Ravnborg wrote:
> > On Fri, May 01, 2009 at 03:24:18PM -0700, H. Peter Anvin wrote:
> >> Hi all,
> >>
> >> right now, we filter out symbols that nm tag N, meaning "debugging 
> >> symbols", from System.map.  However, at least on x86, the 
> >> linker-generated symbol _end is tagged N, and in fact is the only N in 
> >> the entire image.
> >>
> >> Are there other architectures which would suffer if N were included in 
> >> System.map, or would that be a reasonable thing to do?
> > 
> > Peter - what is status here?
> > 
> > Do you see _end tagged N with -tip?
> > We landed a lot of changes to vmlinux.lds there.
> > 
> > Needless to say I have not included N symbols for now.
> > 
> 
> I haven't checked it for a bit, as my immediate need for it disappeared,
> but I don't think it's changed.
We can revisit this if needed.

	Sam
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