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

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Message-ID: <20190813124432.GA12475@kroah.com>
Date:   Tue, 13 Aug 2019 14:44:32 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Matthias Maennich <maennich@...gle.com>
Cc:     linux-kernel@...r.kernel.org, maco@...roid.com,
        kernel-team@...roid.com, arnd@...db.de, geert@...ux-m68k.org,
        hpa@...or.com, jeyu@...nel.org, joel@...lfernandes.org,
        kstewart@...uxfoundation.org, linux-arch@...r.kernel.org,
        linux-kbuild@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-modules@...r.kernel.org, linux-scsi@...r.kernel.org,
        linux-usb@...r.kernel.org, lucas.de.marchi@...il.com,
        maco@...gle.com, michal.lkml@...kovi.net, mingo@...hat.com,
        oneukum@...e.com, pombredanne@...b.com, sam@...nborg.org,
        sboyd@...eaurora.org, sspatil@...gle.com,
        stern@...land.harvard.edu, tglx@...utronix.de,
        usb-storage@...ts.one-eyed-alien.net, x86@...nel.org,
        yamada.masahiro@...ionext.com, Julia Lawall <Julia.Lawall@...6.fr>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        cocci@...teme.lip6.fr
Subject: Re: [PATCH v2 08/10] scripts: Coccinelle script for namespace
 dependencies.

On Tue, Aug 13, 2019 at 01:17:05PM +0100, Matthias Maennich wrote:
> A script that uses the '<module>.ns_deps' file generated by modpost to
> automatically add the required symbol namespace dependencies to each
> module.
> 
> Usage:
> 1) Move some symbols to a namespace with EXPORT_SYMBOL_NS() or define
>    DEFAULT_SYMBOL_NAMESPACE
> 2) Run 'make' (or 'make modules') and get warnings about modules not
>    importing that namespace.
> 3) Run 'make nsdeps' to automatically add required import statements
>    to said modules.
> 
> This makes it easer for subsystem maintainers to introduce and maintain
> symbol namespaces into their codebase.
> 
> Co-developed-by: Martijn Coenen <maco@...roid.com>
> Signed-off-by: Martijn Coenen <maco@...roid.com>
> Signed-off-by: Matthias Maennich <maennich@...gle.com>
> ---

I really can't express just how cool this patch is.  I was amazed when I
first saw it in action a long time ago, and still am.

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>