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From:   Andrii Nakryiko <andrii.nakryiko@gmail.com>
Date:   Thu, 16 Jan 2020 13:56:03 -0800
Message-ID: <CAEf4BzbJZ7JUyr8p3YKX-Rrth_B7OMbih50xxyt_YNBd--107w@mail.gmail.com>
Subject: Re: [PATCH bpf-next v3 04/11] tools/runqslower: Use consistent
 include paths for libbpf
To:     =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= <toke@redhat.com>
Cc:     Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Martin KaFai Lau <kafai@fb.com>,
        Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
        Andrii Nakryiko <andriin@fb.com>,
        Doug Ledford <dledford@redhat.com>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Jesper Dangaard Brouer <brouer@redhat.com>,
        John Fastabend <john.fastabend@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Shuah Khan <shuah@kernel.org>,
        Networking <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        linux-rdma@vger.kernel.org,
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On Thu, Jan 16, 2020 at 5:23 AM Toke H=C3=B8iland-J=C3=B8rgensen <toke@redh=
at.com> wrote:
>
> From: Toke H=C3=B8iland-J=C3=B8rgensen <toke@redhat.com>
>
> Fix the runqslower tool 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 exporte=
d
> on 'make install' of the library) use bracketed includes instead of quote=
d.
>
> To not break the build, keep the old include path until everything has be=
en
> changed to the new one; a subsequent patch will remove that.
>
> Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken f=
rom selftests dir")
> Signed-off-by: Toke H=C3=B8iland-J=C3=B8rgensen <toke@redhat.com>
> ---
>  tools/bpf/runqslower/Makefile         |    5 +++--
>  tools/bpf/runqslower/runqslower.bpf.c |    2 +-
>  tools/bpf/runqslower/runqslower.c     |    4 ++--
>  3 files changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefil=
e
> index 89fb7cd30f1a..c0512b830805 100644
> --- a/tools/bpf/runqslower/Makefile
> +++ b/tools/bpf/runqslower/Makefile
> @@ -5,6 +5,7 @@ LLC :=3D llc
>  LLVM_STRIP :=3D llvm-strip
>  DEFAULT_BPFTOOL :=3D $(OUTPUT)/sbin/bpftool
>  BPFTOOL ?=3D $(DEFAULT_BPFTOOL)
> +LIBBPF_INCLUDE :=3D -I$(abspath ../../lib) -I$(abspath ../../lib/bpf)

I'd probably put all the -I's into single INCLUDES var and include
that one instead of mixing -I$(OUTPUT) and $(LIBBPF_INCLUDE), but this
works too.

Acked-by: Andrii Nakryiko <andriin@fb.com>

>  LIBBPF_SRC :=3D $(abspath ../../lib/bpf)
>  CFLAGS :=3D -g -Wall
>

[...]