From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752308AbdFNOre (ORCPT <rfc822;w@1wt.eu>);
        Wed, 14 Jun 2017 10:47:34 -0400
Received: from mail.kernel.org ([198.145.29.99]:38758 "EHLO mail.kernel.org"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1751888AbdFNOrc (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Wed, 14 Jun 2017 10:47:32 -0400
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EDB7822CB7
Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org
Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=acme@kernel.org
Date: Wed, 14 Jun 2017 11:47:29 -0300
From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>, Ingo Molnar <mingo@kernel.org>,
        linux-kernel@vger.kernel.org,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        David Ahern <dsahern@gmail.com>, Namhyung Kim <namhyung@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>, Wang Nan <wangnan0@huawei.com>
Subject: Re: perf: unwind: target platform=x86 not supported was:  Re: [PATCH
 1/2] perf evsel: Fix probing of precise_ip level for default cycles event
Message-ID: <20170614144729.GG32020@kernel.org>
References: <20170613232343.4365-1-acme@kernel.org>
 <20170613232343.4365-2-acme@kernel.org>
 <20170614054500.exocsybw2qkug5tn@gmail.com>
 <20170614132947.GC32020@kernel.org>
 <20170614135242.GD32020@kernel.org>
 <20170614141951.GA14162@krava>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20170614141951.GA14162@krava>
X-Url: http://acmel.wordpress.com
User-Agent: Mutt/1.8.0 (2017-02-23)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Em Wed, Jun 14, 2017 at 04:19:51PM +0200, Jiri Olsa escreveu:
> On Wed, Jun 14, 2017 at 10:52:42AM -0300, Arnaldo Carvalho de Melo wrote:
> 
> SNIP
> 
> > 
> > And what defines it is...
> > 
> > tools/perf/util/libunwind/x86_32.c:#define REMOTE_UNWIND_LIBUNWIND
> > 
> > (and a arm64 file, but lets leave that aside, seems unrelated to this
> > case)
> > 
> > That will get built by...
> > 
> > tools/perf/util/Build:libperf-$(CONFIG_LIBUNWIND_X86)      += libunwind/x86_32.o
> > 
> > [acme@jouet linux]$ grep CONFIG_LIBUNWIND_X86 /tmp/build/perf/.config-detected
> > [acme@jouet linux]$
> > 
> > Ingo, are you doing something unusual as building a 32-bit perf to read a
> > 62-bit perf.data file?
> > 
> > Jiri, can you help here? Do you need more info?
> 
> hum, looks like local unwind support wasn't compiled in for some reason
> 
> Ingo, what's the arch of host and perf data?

amd64/x86_64, ubuntu, libunwind version 8, perhaps this version has a
problem? See the other message I replied to Ingo, added you to the CC.

- Arnaldo