linux-kernel - Re: [PATCHv3 00/12] perf tools: Display eBPF code in intel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20190530105439.GA5927@leoy-ThinkPad-X240s>
Date:   Thu, 30 May 2019 18:54:39 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Stanislav Fomichev <sdf@...ichev.me>,
        Song Liu <songliubraving@...com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andi Kleen <ak@...ux.intel.com>
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?

[...]

Thanks
Leo Yan