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From:   Ian Rogers <irogers@google.com>
Date:   Thu, 19 Jan 2023 10:12:55 -0800
Message-ID: <CAP-5=fXnzaJfbuNBt=5ETjiNmYzTmkJPc+-iCKr_29mssFRZWQ@mail.gmail.com>
Subject: Re: [PATCH v2 0/3] Assume libbpf 1.0+
To:     Arnaldo Carvalho de Melo <acme@kernel.org>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Andres Freund <andres@anarazel.de>,
        Quentin Monnet <quentin@isovalent.com>,
        Roberto Sassu <roberto.sassu@huawei.com>,
        Christy Lee <christylee@fb.com>,
        Andrii Nakryiko <andrii@kernel.org>,
        Adrian Hunter <adrian.hunter@intel.com>,
        linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
        bpf@vger.kernel.org, Michael Petlan <mpetlan@redhat.com>,
        Ben Hutchings <ben@decadent.org.uk>
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On Thu, Jan 19, 2023 at 9:47 AM Arnaldo Carvalho de Melo
<acme@kernel.org> wrote:
>
> Em Thu, Jan 19, 2023 at 02:41:12PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Anyway, just a data point, I'll check if I'm missing installing it
> > somewhere.
>
> Just asked for libbpf-dev to be installed on the debian:11 container:
>
> [perfbuilder@five 11]$ dsh debian:11
> $ bash
> perfbuilder@589d1572e8cf:/$ ls -la /usr/lib/x86_64-linux-gnu/libbpf.so.0
> lrwxrwxrwx. 1 root root 15 Jan 10  2021 /usr/lib/x86_64-linux-gnu/libbpf.so.0 -> libbpf.so.0.3.0
> perfbuilder@589d1572e8cf:/$ dpkg -l | grep bpf
> ii  libbpf-dev:amd64                   1:0.3-2                        amd64        eBPF helper library (development files)
> ii  libbpf0:amd64                      1:0.3-2                        amd64        eBPF helper library (shared library)
> ii  libpfm4:amd64                      4.11.1+git32-gd0b85fb-1        amd64        Library to program the performance monitoring events
> perfbuilder@589d1572e8cf:/$
>
> - Arnaldo

Right, the old/ancient libbpf-s are gross, but Debian doesn't use
LIBBPF_DYNAMIC which also isn't a default build option. I guess we
could say there's some testing impact from this cleanup, but I'm not
sure we care.

Thanks,
Ian