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Subject: Re: [v2 08/10] scripts: Coccinelle script for namespace dependencies
To:     Matthias Maennich <maennich@google.com>, cocci@systeme.lip6.fr,
        kernel-janitors@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Julia Lawall <Julia.Lawall@lip6.fr>,
        Martijn Coenen <maco@android.com>, linux-arch@vger.kernel.org,
        linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-m68k@lists.linux-m68k.org, linux-modules@vger.kernel.org,
        linux-scsi@vger.kernel.org, linux-usb@vger.kernel.org,
        kernel-team@android.com, usb-storage@lists.one-eyed-alien.net,
        x86@kernel.org, Alan Stern <stern@rowland.harvard.edu>,
        Arnd Bergmann <arnd@arndb.de>,
        "David S. Miller" <davem@davemloft.net>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Gilles Muller <Gilles.Muller@lip6.fr>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
        Jessica Yu <jeyu@kernel.org>,
        Joel Fernandes <joel@joelfernandes.org>,
        Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Lucas De Marchi <lucas.de.marchi@gmail.com>,
        Martijn Coenen <maco@google.com>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        Michal Marek <michal.lkml@markovi.net>,
        Nicolas Ferre <nicolas.ferre@microchip.com>,
        Nicolas Palix <nicolas.palix@imag.fr>,
        Oliver Neukum <oneukum@suse.com>,
        Philippe Ombredanne <pombredanne@nexb.com>,
        Sam Ravnborg <sam@ravnborg.org>,
        Sandeep Patil <sspatil@google.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>
References: <20190813121733.52480-9-maennich@google.com>
 <1c4420f4-361c-7358-49d9-87d8a51f7920@web.de>
 <20190822091858.GA60652@google.com>
From:   Markus Elfring <Markus.Elfring@web.de>
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Date:   Thu, 22 Aug 2019 13:00:52 +0200
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> $srctree is defined by kbuild in the toplevel Makefile.

How is this variable passed to the file =E2=80=9Cscripts/nsdeps=E2=80=9D?


>> * Would you like to support a separate build directory for desired adju=
stments?
>
> No, as the purpose of this script is to directly patch the kernel
> sources where applicable.

Will there occasionally be a need to provide a generated patch
(without in-place file modification)?


>> I suggest to assign the name for the temporary file to a variable
>> which should be used by subsequent commands.
>
> I somehow don't agree that this is an improvement to the code as the
> variable would likely be something like ${source_file_tmp}.

Would you dare to choose a shorter variable name?


> ${source_file}.tmp does express the intent of a temporary file next to
> the original source file and the reader of the code does not need to
> reason about the value of ${source_file_tmp}.

I would find a code variant with less suffix repetition nicer.

Regards,
Markus