linux-kernel - Re: [PATCH 1/2] perf script: Show virtual addresses instead of offsets

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Date:   Thu, 17 May 2018 16:59:57 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Sandipan Das <sandipan@...ux.vnet.ibm.com>
Cc:     jolsa@...hat.com, linux-kernel@...r.kernel.org,
        ravi.bangoria@...ux.ibm.com, naveen.n.rao@...ux.vnet.ibm.com
Subject: Re: [PATCH 1/2] perf script: Show virtual addresses instead of
 offsets

Em Thu, May 17, 2018 at 12:03:25PM +0530, Sandipan Das escreveu:
> When perf data is recorded with the call-graph option enabled,
> the callchain shown by perf script shows the binary offsets of
> the symbols as the ip. This is incorrect for kernel symbols as
> the ip values are always off by a fixed offset depending on the
> architecture. If the offsets from the start of the symbols are
> printed, they are also incorrect for both kernel and userspace
> symbols.
> 
> Without the call-graph option, the callchain shows the virtual
> addresses of the symbols rather than their binary offsets. The
> offsets printed in this case are also correct.
> 
> This fixes the inconsistency in perf script's output.

Thanks, tested and applied,

- Arnaldo