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Date:   Tue, 14 Sep 2021 16:40:37 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Networking <netdev@...r.kernel.org>,
        Andrii Nakryiko <andrii@...nel.org>,
        Quentin Monnet <quentin@...valent.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Subject: Re: linux-next: build failure after merge of the bpf-next tree

On Tue, Sep 14, 2021 at 4:38 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi Andrii,
>
> On Tue, 14 Sep 2021 16:25:55 -0700 Andrii Nakryiko <andrii.nakryiko@...il.com> wrote:
> >
> > On Mon, Sep 13, 2021 at 6:37 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > >
> > > 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=deprecated-declarations]
> > >    27 |        int err = 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 scheduling API deprecations")
> >
> > Should be fixed by [0], when applied to perf tree. Thanks for reporting!
> >
> >   [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).
>

This is perf code that's not in bpf-next yet.


> --
> Cheers,
> Stephen Rothwell

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