From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: Andrii Nakryiko <andrii.nakryiko@gmail.com>,
Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
Networking <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Michael Petlan <mpetlan@redhat.com>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Daniel Borkmann <daniel@iogearbox.net>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>
Subject: Re: [PATCH 0/3] perf/bpftool: Allow to link libbpf dynamically
Date: Mon, 02 Dec 2019 19:08:52 +0100 [thread overview]
Message-ID: <87zhgappl7.fsf@toke.dk> (raw)
In-Reply-To: <CAEf4BzbUK98tsYH1mSNoTjuVB4dstRsL5rpkA+9nRCcqrdn6-Q@mail.gmail.com>
Andrii Nakryiko <andrii.nakryiko@gmail.com> writes:
> On Wed, Nov 27, 2019 at 1:49 AM Jiri Olsa <jolsa@kernel.org> wrote:
>>
>> hi,
>> adding support to link bpftool with libbpf dynamically,
>> and config change for perf.
>>
>> It's now possible to use:
>> $ make -C tools/bpf/bpftool/ LIBBPF_DYNAMIC=1
>
> I wonder what's the motivation behind these changes, though? Why is
> linking bpftool dynamically with libbpf is necessary and important?
> They are both developed tightly within kernel repo, so I fail to see
> what are the huge advantages one can get from linking them
> dynamically.
Well, all the regular reasons for using dynamic linking (memory usage,
binary size, etc). But in particular, the ability to update the libbpf
package if there's a serious bug, and have that be picked up by all
utilities making use of it. No reason why bpftool should be special in
that respect.
-Toke
next prev parent reply other threads:[~2019-12-02 18:09 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-27 9:48 [PATCH 0/3] perf/bpftool: Allow to link libbpf dynamically Jiri Olsa
2019-11-27 9:48 ` [PATCH 1/3] perf tools: Allow to specify libbpf install directory Jiri Olsa
2019-11-27 9:48 ` [PATCH 2/3] libbpf: Export netlink functions used by bpftool Jiri Olsa
2019-11-27 9:48 ` [PATCH 3/3] bpftool: Allow to link libbpf dynamically Jiri Olsa
2019-11-27 13:38 ` Quentin Monnet
2019-11-27 14:15 ` Jiri Olsa
2019-11-27 14:24 ` Arnaldo Carvalho de Melo
2019-11-27 14:31 ` Quentin Monnet
2019-11-27 15:48 ` Arnaldo Carvalho de Melo
2019-11-27 15:52 ` Quentin Monnet
2019-11-27 15:59 ` Arnaldo Carvalho de Melo
2019-11-27 14:29 ` Quentin Monnet
2019-11-27 16:41 ` Alexei Starovoitov
2019-11-27 16:37 ` [PATCH 0/3] perf/bpftool: " Alexei Starovoitov
2019-11-27 18:44 ` Arnaldo Carvalho de Melo
2019-11-27 20:24 ` Andrii Nakryiko
2019-11-27 21:22 ` Daniel Borkmann
2019-11-27 22:47 ` Jiri Olsa
2019-11-28 9:06 ` Toke Høiland-Jørgensen
2019-11-28 14:53 ` [PATCH bpf v2] bpftool: " Toke Høiland-Jørgensen
2019-11-28 15:32 ` Quentin Monnet
2019-11-28 15:52 ` Toke Høiland-Jørgensen
2019-11-28 16:07 ` [PATCH bpf v3] " Toke Høiland-Jørgensen
2019-11-28 17:30 ` Quentin Monnet
2019-11-29 8:12 ` Jiri Olsa
2019-11-29 8:24 ` Toke Høiland-Jørgensen
2019-11-29 10:24 ` Daniel Borkmann
2019-11-29 14:00 ` Toke Høiland-Jørgensen
2019-11-29 23:56 ` Daniel Borkmann
2019-12-02 8:59 ` Jiri Olsa
2019-12-02 17:09 ` [PATCH 0/3] perf/bpftool: " Andrii Nakryiko
2019-12-02 18:08 ` Toke Høiland-Jørgensen [this message]
2019-12-02 18:42 ` Andrii Nakryiko
2019-12-02 18:54 ` Arnaldo Carvalho de Melo
2019-12-02 19:21 ` Jiri Olsa
2019-12-02 19:54 ` Andrii Nakryiko
2019-12-02 20:02 ` Jiri Olsa
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