linux-kernel - Re: [PATCH v2] bpftool: exclude bash-completion/bpftool from .gitignore pattern

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Date:   Sat, 4 May 2019 23:44:46 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Quentin Monnet <quentin.monnet@...ronome.com>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Sirio Balmelli <sirio@...d.ch>,
        Song Liu <songliubraving@...com>,
        Alexei Starovoitov <ast@...nel.org>,
        Network Development <netdev@...r.kernel.org>,
        Yonghong Song <yhs@...com>,
        Taeung Song <treeze.taeung@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Martin KaFai Lau <kafai@...com>, bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH v2] bpftool: exclude bash-completion/bpftool from
 .gitignore pattern

On Wed, May 1, 2019 at 7:02 AM Quentin Monnet
<quentin.monnet@...ronome.com> wrote:
>
> 2019-05-01 22:45 UTC+0900 ~ Masahiro Yamada <yamada.masahiro@...ionext.com>
> > tools/bpf/bpftool/.gitignore has the "bpftool" pattern, which is
> > intended to ignore the following build artifact:
> >
> >   tools/bpf/bpftool/bpftool
> >
> > However, the .gitignore entry is effective not only for the current
> > directory, but also for any sub-directories.
> >
> > So, from the point of .gitignore grammar, the following check-in file
> > is also considered to be ignored:
> >
> >   tools/bpf/bpftool/bash-completion/bpftool
> >
> > As the manual gitignore(5) says "Files already tracked by Git are not
> > affected", this is not a problem as far as Git is concerned.
> >
> > However, Git is not the only program that parses .gitignore because
> > .gitignore is useful to distinguish build artifacts from source files.
> >
> > For example, tar(1) supports the --exclude-vcs-ignore option. As of
> > writing, this option does not work perfectly, but it intends to create
> > a tarball excluding files specified by .gitignore.
> >
> > So, I believe it is better to fix this issue.
> >
> > You can fix it by prefixing the pattern with a slash; the leading slash
> > means the specified pattern is relative to the current directory.
> >
> > Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> > ---
> >
> > Changes in v2:
> >   - Add more information to the commit log to clarify my main motivation
> >   - Touch "bpftool" pattern only
> >
> >  tools/bpf/bpftool/.gitignore | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/tools/bpf/bpftool/.gitignore b/tools/bpf/bpftool/.gitignore
> > index 67167e4..8248b8d 100644
> > --- a/tools/bpf/bpftool/.gitignore
> > +++ b/tools/bpf/bpftool/.gitignore
> > @@ -1,5 +1,5 @@
> >  *.d
> > -bpftool
> > +/bpftool
> >  bpftool*.8
> >  bpf-helpers.*
> >  FEATURE-DUMP.bpftool
> >
>
> Thanks a lot for the changes!
>
> Reviewed-by: Quentin Monnet <quentin.monnet@...ronome.com>

Applied. Thanks