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

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Date:   Thu, 30 May 2019 22:05:10 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, Jiri Olsa <jolsa@...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 Arnaldo,

On Thu, May 30, 2019 at 10:36:45AM -0300, Arnaldo Carvalho de Melo wrote:

[...]

> One other way of testing this:
> 
> I used perf trace's use of BPF, using:
> 
> [root@...co ~]# cat ~/.perfconfig
> [llvm]
> 	dump-obj = true
> 	clang-opt = -g
> [trace]
> 	add_events = /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.c
> 	show_zeros = yes
> 	show_duration = no
> 	no_inherit = yes
> 	show_timestamp = no
> 	show_arg_names = no
> 	args_alignment = 40
> 	show_prefix = yes
> 
> For arm64 this needs fixing, tools/perf/examples/bpf/augmented_raw_syscalls.c
> (its in the kernel sources) is still hard coded for x86_64 syscall numbers :-\

Thanks a lot for sharing this, I will test with this method and let you
and Jiri know the result in tomorrow.

[...]

Thanks,
Leo Yan