linux-kernel - Re: [PATCH 3/4] perf tools: Check libunwind for availability of dwarf parsing feature

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Message-ID: <20131008142830.GI4018@ghostprotocols.net>
Date:	Tue, 8 Oct 2013 11:28:30 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Jean Pihet <jean.pihet@...aro.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
	Will Deacon <will.deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Patch Tracking <patches@...aro.org>
Subject: Re: [PATCH 3/4] perf tools: Check libunwind for availability of
 dwarf parsing feature

Em Tue, Oct 08, 2013 at 04:15:40PM +0200, Jean Pihet escreveu:
> On 8 October 2013 12:47, Peter Zijlstra <peterz@...radead.org> wrote:
> > On Tue, Oct 08, 2013 at 12:44:32PM +0200, Jean Pihet wrote:
> >> On 26 September 2013 14:48, Jiri Olsa <jolsa@...hat.com> wrote:
> >> > On Thu, Sep 26, 2013 at 01:36:37PM +0200, Jean Pihet wrote:
> >> >> The newly added dwarf unwinding feature [1] requires:
> >> >> . a recent version (>= 1.1) of libunwind,
> >> >> . libunwind to be configured with --enable-debug-frame.

> >> >> [1] http://www.spinics.net/lists/kernel/msg1598951.html

> >> >> Add the corresponding API tests in the feature check list.

> >> > Acked-by: Jiri Olsa <jolsa@...hat.com>

> >> Thanks for the ack!

> >> Is it possible to get an ack from the perf core maintainers?
> >> Also, is the patch going in Will's tree?

> > This being a tools patch you'd have to ask acme; also I know next to
> > nothing about all this unwind business except that its stupid expensive
> > ;-)
> You are right! It brings some more info on the trace though.

> -- adding Arnaldo in the loop --
> Arnaldo, are you OK with the changes [1]? Jiri acked the patches
> already; Will is willing (no pun intended) to take the ARM specific
> patches [2] in his tree.

As Jiri acked, go ahead and pick as much as you can via Will's tree, I'd
say. :-)

- Arnaldo
 
> [1] http://www.spinics.net/lists/kernel/msg1608921.html and
> http://www.spinics.net/lists/kernel/msg1608922.html
> [2] http://www.spinics.net/lists/kernel/msg1608920.html and
> http://www.spinics.net/lists/kernel/msg1608923.html
> 
> Regards,
> Jean
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