linux-kernel - Re: [PATCH v3 1/1] bpftool: Align dumped file generated header with skeletons.

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Message-ID: <4411407.LvFx2qVVIh@pwmachine>
Date:   Wed, 13 Jul 2022 16:53:18 +0200
From:   Francis Laniel <flaniel@...ux.microsoft.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     bpf <bpf@...r.kernel.org>, Quentin Monnet <quentin@...valent.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/1] bpftool: Align dumped file generated header with skeletons.

Le mercredi 13 juillet 2022, 16:47:17 CEST Alexei Starovoitov a écrit :
> On Wed, Jul 13, 2022 at 7:45 AM Francis Laniel
> 
> <flaniel@...ux.microsoft.com> wrote:
> > This commit adds the following lines to file generated by dump:
> > /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
> > /* THIS FILE IS AUTOGENERATED BY BPFTOOL! */
> > Hence, the dumped file headers follows that of skeletons.
> > 
> > Signed-off-by: Francis Laniel <flaniel@...ux.microsoft.com>
> > ---
> > 
> >  tools/bpf/bpftool/btf.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
> > index 7e6accb9d9f7..066a0acd0ecd 100644
> > --- a/tools/bpf/bpftool/btf.c
> > +++ b/tools/bpf/bpftool/btf.c
> > @@ -425,6 +425,8 @@ static int dump_btf_c(const struct btf *btf,
> > 
> >         if (err)
> >         
> >                 return err;
> > 
> > +       printf("/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
> > */\n");
> This was discussed earlier. It's incorrect and we cannot add just header
> to vmlinux.h

Oops sorry, I will send a v4 dropping it.
Nonetheless can you please send me a link for a discussion about this?

> 
> > +       printf("/* THIS FILE IS AUTOGENERATED BY BPFTOOL! */\n");
> > 
> >         printf("#ifndef __VMLINUX_H__\n");
> >         printf("#define __VMLINUX_H__\n");
> >         printf("\n");
> > 
> > --
> > 2.25.1