linux-kernel - Re: [PATCH] perf: fix extern struct definitions

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Message-ID: <20101004180200.GC4420@ghostprotocols.net>
Date:	Mon, 4 Oct 2010 15:02:00 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	paulus@...ba.org, davem@...emloft.net, fweisbec@...il.com,
	perfmon2-devel@...ts.sf.net, eranian@...il.com,
	robert.richter@....com
Subject: Re: [PATCH] perf: fix extern struct definitions

Em Tue, Sep 21, 2010 at 12:45:01AM +0200, Stephane Eranian escreveu:
> Both python_scripting_ops and perl_scripting_ops have two global definitions.
> One in trace-event-scripting.c and one in their respective scripting-engine
> modules.
> 
> The issue is that depending on the linker order one definition or the other
> is chosen. One is uninitialized (bss), while the other is initialized. If
> the uninitialized version is chosen, then perf does not function properly.
> 
> This patch fixes this by adding the extern prefix to the definitions in
> trace-event-scripting.c. 
> 
> Signed-off-by: Stephane Eranian <eranian@...gle.com>

Thanks, applying to perf/urgent,

- Arnaldo
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