From: Tao Chen <chen.dylane@linux.dev>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Eduard <eddyz87@gmail.com>, Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@fomichev.me>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>,
Matt Bobrowski <mattbobrowski@google.com>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
bpf <bpf@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>,
linux-trace-kernel <linux-trace-kernel@vger.kernel.org>
Subject: Re: [PATCH bpf-next v4 2/2] bpf: Add show_fdinfo for kprobe_multi
Date: Fri, 20 Jun 2025 10:45:58 +0800 [thread overview]
Message-ID: <9eedd830-9222-4ac0-8ccd-72499fb85b13@linux.dev> (raw)
In-Reply-To: <CAADnVQLyAeo9ztPoJzU1QJUQf6SMptVNoOzZza02xPuXO1ES2g@mail.gmail.com>
在 2025/6/20 01:17, Alexei Starovoitov 写道:
> On Wed, Jun 18, 2025 at 8:44 PM Tao Chen <chen.dylane@linux.dev> wrote:
>>
>> Show kprobe_multi link info with fdinfo, the info as follows:
>>
>> link_type: kprobe_multi
>> link_id: 1
>> prog_tag: a15b7646cb7f3322
>> prog_id: 21
>> type: kprobe_multi
>
> ..
>
>> + seq_printf(seq,
>> + "type:\t%s\n"
>> + "kprobe_cnt:\t%u\n"
>> + "missed:\t%lu\n",
>> + kmulti_link->flags == BPF_F_KPROBE_MULTI_RETURN ? "kretprobe_multi" :
>> + "kprobe_multi",
>
> why print the same info twice ?
> seq_printf(m, "link_type:\t%s\n", bpf_link_type_strs[type]);
> in bpf_link_show_fdinfo() already did it in a cleaner way.
>
link_type only shows 'kprobe_multi', maybe we can show the format like:
// for kretprobe_multi
retprobe: true
// for kprobe_multi
retprobe: false
> Same issue in the other patch.
>
> pw-bot: cr
--
Best Regards
Tao Chen
next prev parent reply other threads:[~2025-06-20 2:46 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-19 3:42 [PATCH bpf-next v4 1/2] bpf: Add show_fdinfo for uprobe_multi Tao Chen
2025-06-19 3:42 ` [PATCH bpf-next v4 2/2] bpf: Add show_fdinfo for kprobe_multi Tao Chen
2025-06-19 17:17 ` Alexei Starovoitov
2025-06-20 2:45 ` Tao Chen [this message]
2025-06-20 2:59 ` Alexei Starovoitov
2025-06-20 3:21 ` Tao Chen
2025-06-20 3:31 ` Tao Chen
2025-06-20 18:25 ` Alexei Starovoitov
2025-06-23 2:32 ` Tao Chen
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