From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: "Björn Töpel" <bjorn.topel@intel.com>, "Jiri Olsa" <jolsa@redhat.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Jiri Olsa <jolsa@kernel.org>, Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
netdev@vger.kernel.org, bpf@vger.kernel.org,
Andrii Nakryiko <andriin@fb.com>, Yonghong Song <yhs@fb.com>,
Martin KaFai Lau <kafai@fb.com>,
Jakub Kicinski <jakub.kicinski@netronome.com>,
David Miller <davem@redhat.com>
Subject: Re: [PATCH 5/5] bpf: Allow to resolve bpf trampoline in unwind
Date: Mon, 03 Feb 2020 21:45:17 +0100 [thread overview]
Message-ID: <87tv47bdsy.fsf@toke.dk> (raw)
In-Reply-To: <8f656ce1-c350-0edd-096b-8f1c395609ec@intel.com>
Björn Töpel <bjorn.topel@intel.com> writes:
> On 2020-02-03 20:58, Jiri Olsa wrote:
> [...]
>>>> ...and FWIW, it would be nice with bpf_dispatcher_<...> entries in kallsyms
>>>
>>> ok so it'd be 'bpf_dispatcher_<name>'
>>
>> hi,
>> so the only dispatcher is currently defined as:
>> DEFINE_BPF_DISPATCHER(bpf_dispatcher_xdp)
>>
>> with the bpf_dispatcher_<name> logic it shows in kallsyms as:
>> ffffffffa0450000 t bpf_dispatcher_bpf_dispatcher_xdp [bpf]
>>
>
> Ick! :-P
>
>
>> to fix that, would you guys preffer having:
>> DEFINE_BPF_DISPATCHER(xdp)
>>
>> or using the full dispatcher name as kallsyms name?
>> which would require some discipline for future dispatcher names ;-)
>>
>
> I'd prefer the latter, i.e. name "xdp" is shown as bpf_dispatcher_xdp in
> kallsyms.
>
> ...and if this route is taken, the macros can be changed, so that the
> trampoline functions are prefixed with "bpf_dispatcher_". Something like
> this (and also a small '_' cleanup):
+1; and thanks for fixing that _ as well - that was really bothering me :)
-Toke
next prev parent reply other threads:[~2020-02-03 20:45 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-29 14:37 [RFC 0/5] bpf: Add trampoline helpers Jiri Olsa
2019-12-29 14:37 ` [PATCH 1/5] bpf: Allow non struct type for btf ctx access Jiri Olsa
2020-01-06 21:36 ` Yonghong Song
2020-01-07 12:13 ` Jiri Olsa
2020-01-07 15:50 ` Jiri Olsa
2020-01-07 17:55 ` Yonghong Song
2020-01-07 18:28 ` Yonghong Song
2020-01-08 14:38 ` Jiri Olsa
2019-12-29 14:37 ` [PATCH 2/5] bpf: Add bpf_perf_event_output_kfunc Jiri Olsa
2020-01-06 23:27 ` Alexei Starovoitov
2020-01-07 12:25 ` Jiri Olsa
2020-01-07 22:13 ` Alexei Starovoitov
2020-01-08 10:24 ` Jiri Olsa
2019-12-29 14:37 ` [PATCH 3/5] bpf: Add bpf_get_stackid_kfunc Jiri Olsa
2019-12-29 14:37 ` [PATCH 4/5] bpf: Add bpf_get_stack_kfunc Jiri Olsa
2019-12-29 14:37 ` [PATCH 5/5] bpf: Allow to resolve bpf trampoline in unwind Jiri Olsa
2020-01-06 23:46 ` Alexei Starovoitov
2020-01-07 8:30 ` Daniel Borkmann
2020-01-07 13:15 ` Jiri Olsa
2020-01-07 19:30 ` Daniel Borkmann
2020-01-07 13:05 ` Jiri Olsa
2020-01-07 13:30 ` Björn Töpel
2020-01-13 9:43 ` Jiri Olsa
2020-01-13 12:21 ` Björn Töpel
2020-01-13 12:31 ` Björn Töpel
2020-01-13 12:37 ` Jiri Olsa
2020-02-03 19:58 ` Jiri Olsa
2020-02-03 20:27 ` Björn Töpel
2020-02-03 20:45 ` Toke Høiland-Jørgensen [this message]
2020-02-04 8:18 ` Jiri Olsa
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87tv47bdsy.fsf@toke.dk \
--to=toke@redhat.com \
--cc=alexei.starovoitov@gmail.com \
--cc=andriin@fb.com \
--cc=ast@kernel.org \
--cc=bjorn.topel@intel.com \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@redhat.com \
--cc=jakub.kicinski@netronome.com \
--cc=jolsa@kernel.org \
--cc=jolsa@redhat.com \
--cc=kafai@fb.com \
--cc=netdev@vger.kernel.org \
--cc=yhs@fb.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).