linux-kernel - Re: [tip:perf/core] perf probe: Don't compile CFI related code if elfutils is old

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Date:	Tue, 18 May 2010 11:35:35 +0200
From:	Robert Richter <robert.richter@....com>
To:	"mingo@...hat.com" <mingo@...hat.com>,
	"hpa@...or.com" <hpa@...or.com>,
	"eranian@...gle.com" <eranian@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"acme@...hat.com" <acme@...hat.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mhiramat@...hat.com" <mhiramat@...hat.com>,
	"mingo@...e.hu" <mingo@...e.hu>
CC:	"linux-tip-commits@...r.kernel.org" 
	<linux-tip-commits@...r.kernel.org>
Subject: Re: [tip:perf/core] perf probe: Don't compile CFI related code if
 elfutils is old

On 17.05.10 21:57:38, tip-bot for Masami Hiramatsu wrote:
> Commit-ID:  7752f1b096e13991f20b59fd11ba73da3809d93c
> Gitweb:     http://git.kernel.org/tip/7752f1b096e13991f20b59fd11ba73da3809d93c
> Author:     Masami Hiramatsu <mhiramat@...hat.com>
> AuthorDate: Mon, 10 May 2010 13:12:07 -0400
> Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
> CommitDate: Mon, 17 May 2010 22:13:51 -0300
> 
> perf probe: Don't compile CFI related code if elfutils is old
> 
> Check elfutils version, and if it is old don't compile CFI analysis code. This
> allows to compile perf with old elfutils.
> 
> Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
> Tested-by: Stephane Eranian <eranian@...gle.com>
> Reported-by: Robert Richter <robert.richter@....com>
> Cc: Ingo Molnar <mingo@...e.hu>
> LKML-Reference: <20100510171207.26029.97604.stgit@...alhost6.localdomain6>
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> ---

I think this patch is not needed as we came up with an alternative
solution with commit:

 6b3c4ef perf probe: Check older elfutils and set NO_DWARF

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center
email: robert.richter@....com

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