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Date:   Thu, 30 May 2019 18:54:39 +0800
From:   Leo Yan <>
To:     Jiri Olsa <>
Cc:     Arnaldo Carvalho de Melo <>,
        Jesper Dangaard Brouer <>,
        Alexei Starovoitov <>,
        Daniel Borkmann <>,
        lkml <>,
        Ingo Molnar <>,
        Namhyung Kim <>,
        Alexander Shishkin <>,
        Peter Zijlstra <>,
        Stanislav Fomichev <>,
        Song Liu <>,
        Adrian Hunter <>,
        Andi Kleen <>
Subject: Re: [PATCHv3 00/12] perf tools: Display eBPF code in intel_pt trace

Hi Jiri,

On Wed, May 08, 2019 at 03:19:58PM +0200, Jiri Olsa wrote:
> hi,
> this patchset adds dso support to read and display
> bpf code in intel_pt trace output. I had to change
> some of the kernel maps processing code, so hopefully
> I did not break too many things ;-)
> It's now possible to see bpf code flow via:
>   # perf-with-kcore record pt -e intel_pt//ku -- sleep 1
>   # perf-with-kcore script pt --insn-trace --xed

This is very interesting work for me!

I want to verify this feature with Arm CoreSight trace, I have one
question so that I have more direction for the tesing:

What's the bpf program you are suing for the testing?  e.g. some
testing program under the kernel's folder $kernel/samples/bpf?
Or you uses perf command to launch bpf program?


Leo Yan

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