linux-kernel - Re: Inlined functions in perf report

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Message-ID: <20161221102035.GA31703@sesse.net>
Date:   Wed, 21 Dec 2016 11:20:35 +0100
From:   "Steinar H. Gunderson" <sgunderson@...foot.com>
To:     Milian Wolff <milian.wolff@...b.com>
Cc:     "Jin, Yao" <yao.jin@...ux.intel.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Jiri Olsa <jolsa@...nel.org>,
        "Liang, Kan" <kan.liang@...el.com>
Subject: Re: Inlined functions in perf report

On Wed, Dec 21, 2016 at 11:09:42AM +0100, Milian Wolff wrote:
> Just to check - did you really compile your code with frame pointers? By 
> default, that is not the case, and the above will try to do frame pointer 
> unwinding which will then fail. Put differently - do you any stack frames at 
> all? Can you try `perf record --call-graph dwarf` instead? Of course, make 
> sure you compile your code with `-g -O2` or similar.

I don't specifically use -fno-omit-frame-pointer, no. But the normal stack
unwinding works just fine with mainline perf nevertheless; is this expected?

/* Steinar */
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