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Date:   Wed, 15 Jan 2020 16:41:12 +0100
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Shuah Khan <shuah@...nel.org>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-kselftest@...r.kernel.org,
        clang-built-linux@...glegroups.com, brouer@...hat.com
Subject: Re: [PATCH bpf-next v2 07/10] samples/bpf: Use consistent include paths for libbpf

Jesper Dangaard Brouer <brouer@...hat.com> writes:

> On Wed, 15 Jan 2020 15:12:56 +0100
> Toke Høiland-Jørgensen <toke@...hat.com> wrote:
>
>> From: Toke Høiland-Jørgensen <toke@...hat.com>
>> 
>> Fix all files in samples/bpf to include libbpf header files with the bpf/
>> prefix, to be consistent with external users of the library. Also ensure
>> that all includes of exported libbpf header files (those that are exported
>> on 'make install' of the library) use bracketed includes instead of quoted.
>> 
>> To make sure no new files are introduced that doesn't include the bpf/
>> prefix in its include, remove tools/lib/bpf from the include path entirely,
>> and use tools/lib instead.
>> 
>> Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
>> Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com>
>
> I like this change. Maybe the reason so many samples/bpf/ files
> still included "libbpf.h" was that once-upon-a-time we had a "eBPF mini
> library" in the file samples/bpf/libbpf.h that were included.

Yes, I think something similar is the case with bpf_helpers.h - that
used to be outside libbpf, and I guess no one bothered to do a cleanup
such as this one when it was moved...

-Toke

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