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Date:   Wed, 15 Sep 2021 09:38:02 +1000
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc:     Daniel Borkmann <daniel@iogearbox.net>,
        Alexei Starovoitov <ast@kernel.org>,
        Networking <netdev@vger.kernel.org>,
        Andrii Nakryiko <andrii@kernel.org>,
        Quentin Monnet <quentin@isovalent.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Jiri Olsa <jolsa@kernel.org>
Subject: Re: linux-next: build failure after merge of the bpf-next tree
Message-ID: <20210915093802.02303754@canb.auug.org.au>
In-Reply-To: <CAEf4BzYt4XnHr=zxAEeA2=xF_LCNs_eqneO1R6j8=PMTBo5Z5w@mail.gmail.com>
References: <20210914113730.74623156@canb.auug.org.au>
        <CAEf4BzYt4XnHr=zxAEeA2=xF_LCNs_eqneO1R6j8=PMTBo5Z5w@mail.gmail.com>
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Hi Andrii,

On Tue, 14 Sep 2021 16:25:55 -0700 Andrii Nakryiko <andrii.nakryiko@gmail.c=
om> wrote:
>
> On Mon, Sep 13, 2021 at 6:37 PM Stephen Rothwell <sfr@canb.auug.org.au> w=
rote:
> >
> > After merging the bpf-next tree, today's linux-next build (perf) failed
> > like this:
> >
> > util/bpf-event.c: In function 'btf__load_from_kernel_by_id':
> > util/bpf-event.c:27:8: error: 'btf__get_from_id' is deprecated: libbpf =
v0.6+: use btf__load_from_kernel_by_id instead [-Werror=3Ddeprecated-declar=
ations]
> >    27 |        int err =3D btf__get_from_id(id, &btf);
> >       |        ^~~
> > In file included from util/bpf-event.c:5:
> > /home/sfr/next/next/tools/lib/bpf/btf.h:54:16: note: declared here
> >    54 | LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf);
> >       |                ^~~~~~~~~~~~~~~~
> > cc1: all warnings being treated as errors
> >
> > Caused by commit
> >
> >   0b46b7550560 ("libbpf: Add LIBBPF_DEPRECATED_SINCE macro for scheduli=
ng API deprecations") =20
>=20
> Should be fixed by [0], when applied to perf tree. Thanks for reporting!
>=20
>   [0] https://patchwork.kernel.org/project/netdevbpf/patch/20210914170004=
.4185659-1-andrii@kernel.org/

That really needs to be applied to the bpf-next tree (presumably with
the appropriate Acks).

--=20
Cheers,
Stephen Rothwell

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