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 S1752182AbdFNObq (ORCPT <rfc822;w@1wt.eu>);
        Wed, 14 Jun 2017 10:31:46 -0400
Received: from mx1.redhat.com ([209.132.183.28]:37396 "EHLO mx1.redhat.com"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1751836AbdFNObp (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Wed, 14 Jun 2017 10:31:45 -0400
DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 910F4C04B333
Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com
Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jolsa@redhat.com
DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 910F4C04B333
Date: Wed, 14 Jun 2017 16:31:41 +0200
From: Jiri Olsa <jolsa@redhat.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
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: <20170614143141.GB14162@krava>
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>
User-Agent: Mutt/1.8.0 (2017-02-23)
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Wed, 14 Jun 2017 14:31:44 +0000 (UTC)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed, Jun 14, 2017 at 04:19:51PM +0200, Jiri Olsa wrote:
> 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?

also "make clean && make VF=1 V=1" output would help

thanks,
jirka