linux-kernel - Re: [PATCH 1/2] x86: Remove warning and warning_symbol from struct stacktrace

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Date:	Thu, 14 Jul 2011 15:50:11 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	Richard Weinberger <richard@....at>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Huang Ying <ying.huang@...el.com>,
	Soeren Sandmann Pedersen <ssp@...hat.com>,
	Namhyung Kim <namhyung@...il.com>, x86 <x86@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Robert Richter <robert.richter@....com>,
	Paul Mundt <lethal@...ux-sh.org>
Subject: Re: [PATCH 1/2] x86: Remove warning and warning_symbol from struct
 stacktrace_ops

On Thu, Jul 14, 2011 at 12:01:02PM +0100, Mel Gorman wrote:
> On Thu, May 12, 2011 at 10:32:05PM +0200, Frederic Weisbecker wrote:
> > From: Richard Weinberger <richard@....at>
> > 
> > Both warning and warning_symbol are nowhere used.
> > Let's get rid of them.
> > 
> > Signed-off-by: Richard Weinberger <richard@....at>
> > Cc: Oleg Nesterov <oleg@...hat.com>
> > Cc: Andrew Morton <akpm@...ux-foundation.org>
> > Cc: Huang Ying <ying.huang@...el.com>
> > Cc: Soeren Sandmann Pedersen <ssp@...hat.com>
> > Cc: Namhyung Kim <namhyung@...il.com>
> > Cc: x86 <x86@...nel.org>
> > Cc: H. Peter Anvin <hpa@...or.com>
> > Cc: Thomas Gleixner <tglx@...utronix.de>
> > Cc: Robert Richter <robert.richter@....com>
> > Cc: Paul Mundt <lethal@...ux-sh.org>
> > Link: http://lkml.kernel.org/r/1305205872-10321-2-git-send-email-richard@nod.at
> > Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
> 
> This change breaks systemtap. I know it's out of tree and systemtap
> doesn't even do anything useful with the symbols as it assigns them
> to dummy callbacks but the breakage is there.

Then it's up to systemtap developers to deal with that. We don't maintain out-of-tree.
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