Re: [PATCH v2] perf: libdw support for powerpc [ping]

On Tue, Jun 20, 2017 at 10:06:35PM -0300, Arnaldo Carvalho de Melo wrote:

Em Thu, Jun 15, 2017 at 01:16:32PM +0200, Mark Wielaard escreveu:

quoted

On Thu, 2017-06-15 at 10:46 +0200, Milian Wolff wrote:

quoted

Just a quick question: Have you guys applied my recent patch:

commit 5ea0416f51cc93436bbe497c62ab49fd9cb245b6
Author: Milian Wolff [off-list ref]
Date:   Thu Jun 1 23:00:21 2017 +0200

    perf report: Include partial stacks unwound with libdw
    
    So far the whole stack was thrown away when any error occurred before
    the maximum stack depth was unwound. This is actually a very common
    scenario though. The stacks that got unwound so far are still
    interesting. This removes a large chunk of differences when comparing
    perf script output for libunwind and libdw perf unwinding.

If not, then this could explain the issue you are seeing.

Thanks! No, I didn't have that patch (*) yet. It makes a huge
difference. With that, Paolo's patch and the elfutils libdw powerpc64
fallback unwinder patch, it looks like I get user stack traces for
everything now on ppc64le.

Can I take that as a Tested-by: you?

Sure.
Tested-by: Mark Wielaard <redacted>

Thanks,

Mark