linux-kernel - Re: [v2 08/10] scripts: Coccinelle script for namespace dependencies

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Date:   Thu, 22 Aug 2019 13:00:52 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Matthias Maennich <maennich@...gle.com>, cocci@...teme.lip6.fr,
        kernel-janitors@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Julia Lawall <Julia.Lawall@...6.fr>,
        Martijn Coenen <maco@...roid.com>, linux-arch@...r.kernel.org,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-m68k@...ts.linux-m68k.org, linux-modules@...r.kernel.org,
        linux-scsi@...r.kernel.org, linux-usb@...r.kernel.org,
        kernel-team@...roid.com, usb-storage@...ts.one-eyed-alien.net,
        x86@...nel.org, Alan Stern <stern@...land.harvard.edu>,
        Arnd Bergmann <arnd@...db.de>,
        "David S. Miller" <davem@...emloft.net>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        Jessica Yu <jeyu@...nel.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Lucas De Marchi <lucas.de.marchi@...il.com>,
        Martijn Coenen <maco@...gle.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Oliver Neukum <oneukum@...e.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Sandeep Patil <sspatil@...gle.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [v2 08/10] scripts: Coccinelle script for namespace dependencies

> $srctree is defined by kbuild in the toplevel Makefile.

How is this variable passed to the file “scripts/nsdeps”?


>> * Would you like to support a separate build directory for desired adjustments?
>
> 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