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Date: Mon, 7 Dec 2015 14:45:42 +0100
From: Jiri Olsa <jolsa@redhat.com>
To: Martin =?utf-8?B?TGnFoWth?= <mliska@suse.cz>
Cc: Jiri Olsa <jolsa@kernel.org>, Arnaldo Carvalho de Melo <acme@kernel.org>,
        lkml <linux-kernel@vger.kernel.org>, David Ahern <dsahern@gmail.com>,
        Ingo Molnar <mingo@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [RFC] The -Og debugging experience
Message-ID: <20151207134542.GB26191@krava.brq.redhat.com>
References: <20151202164827.GA21124@krava.brq.redhat.com>
 <566563E7.9040706@suse.cz>
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On Mon, Dec 07, 2015 at 11:48:07AM +0100, Martin Liška wrote:
> On 12/02/2015 05:48 PM, Jiri Olsa wrote:
> > heya,
> > using the -Og for DEBUG=1 builds gives me many 'optimized out' stuff
> > 
> > It was introduced in here:
> >   e8b7ea4356fd perf tools: Improve setting of gcc debug option
> > 
> > - here's backtrace from segfault I was looking at, current code:
> 
> Hi.
> 
> Can you please provide a test-case which I can use for testing of the issue?

just run perf report in gdb and kill it with sigsegv from other terminal
this gives me several instances of <optimized out> right in the backtrace

jirka