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From: Yafang Shao <laoar.shao@gmail.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com,
	 andrii@kernel.org, martin.lau@linux.dev, song@kernel.org,
	yhs@fb.com,  kpsingh@kernel.org, sdf@google.com,
	haoluo@google.com, jolsa@kernel.org,  quentin@isovalent.com,
	bpf@vger.kernel.org
Subject: Re: [RFC PATCH bpf-next 3/8] bpftool: Show probed function in kprobe_multi link info
Date: Wed, 31 May 2023 11:17:40 +0800	[thread overview]
Message-ID: <CALOAHbAEcsFvPva5Mh64ntokpcF-J6kkoB5SktX=rBx+Qs-A4Q@mail.gmail.com> (raw)
In-Reply-To: <20230531003116.vcxiogqjntrzfdhi@MacBook-Pro-8.local>

On Wed, May 31, 2023 at 8:31 AM Alexei Starovoitov
<alexei.starovoitov@gmail.com> wrote:
>
> On Sun, May 28, 2023 at 02:20:22PM +0000, Yafang Shao wrote:
> > Show the already expose kprobe_multi link info in bpftool. The result as
> > follows,
> >
> > $ bpftool link show
> > 2: kprobe_multi  prog 11
> >         func_cnt 4  addrs ffffffffaad475c0 ffffffffaad47600
> >                           ffffffffaad47640 ffffffffaad47680
> >         pids trace(10936)
> >
> > $ bpftool link show -j
> > [{"id":1,"type":"perf_event","prog_id":5,"bpf_cookie":0,"pids":[{"pid":10658,"comm":"trace"}]},{"id":2,"type":"kprobe_multi","prog_id":11,"func_cnt":4,"addrs":[18446744072280634816,18446744072280634880,18446744072280634944,18446744072280635008],"pids":[{"pid":10936,"comm":"trace"}]},{"id":120,"type":"iter","prog_id":266,"target_name":"bpf_map"},{"id":121,"type":"iter","prog_id":267,"target_name":"bpf_prog"}]
> >
> > $ bpftool link show  | grep -A 1 "func_cnt" | \
> >   awk '{if (NR == 1) {print $4; print $5;} else {print $1; print $2} }' | \
> >   awk '{"grep " $1 " /proc/kallsyms" | getline f; print f;}'
>
> This is not human friendly.
> Either make bpftool print complete info or don't do it all.
>

I will make bpftool print complete info in the next version.

-- 
Regards
Yafang

  reply	other threads:[~2023-05-31  3:18 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-28 14:20 [RFC PATCH bpf-next 0/8] bpf: Support ->show_fdinfo and ->fill_link_info for kprobe prog Yafang Shao
2023-05-28 14:20 ` [RFC PATCH bpf-next 1/8] bpf: Support ->show_fdinfo for kprobe_multi Yafang Shao
2023-05-29 12:06   ` Jiri Olsa
2023-05-30  1:39     ` Yafang Shao
2023-05-31  0:28       ` Alexei Starovoitov
2023-05-31  3:14         ` Yafang Shao
2023-05-28 14:20 ` [RFC PATCH bpf-next 2/8] bpf: Support ->fill_link_info " Yafang Shao
2023-05-29 12:49   ` Jiri Olsa
2023-05-30  1:41     ` Yafang Shao
2023-05-28 14:20 ` [RFC PATCH bpf-next 3/8] bpftool: Show probed function in kprobe_multi link info Yafang Shao
2023-05-30 11:15   ` Quentin Monnet
2023-05-31  3:16     ` Yafang Shao
2023-05-31  0:31   ` Alexei Starovoitov
2023-05-31  3:17     ` Yafang Shao [this message]
2023-05-28 14:20 ` [RFC PATCH bpf-next 4/8] bpf: Always expose the probed address Yafang Shao
2023-05-28 14:20 ` [RFC PATCH bpf-next 5/8] bpf: Support ->show_fdinfo for perf_event Yafang Shao
2023-05-28 14:20 ` [RFC PATCH bpf-next 6/8] bpf: Add a common helper bpf_copy_to_user() Yafang Shao
2023-05-28 14:20 ` [RFC PATCH bpf-next 7/8] bpf: Support ->fill_link_info for perf_event Yafang Shao
2023-05-31  0:37   ` Alexei Starovoitov
2023-05-31  3:24     ` Yafang Shao
2023-05-28 14:20 ` [RFC PATCH bpf-next 8/8] bpftool: Show probed function in perf_event link info Yafang Shao

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