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Date:   Thu, 5 Sep 2019 15:46:55 +0100
From:   Matthias Maennich <maennich@google.com>
To:     Masahiro Yamada <yamada.masahiro@socionext.com>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "Cc: Android Kernel" <kernel-team@android.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jessica Yu <jeyu@kernel.org>,
        "Joel Fernandes (Google)" <joel@joelfernandes.org>,
        Lucas De Marchi <lucas.de.marchi@gmail.com>,
        maco@android.com, sspatil@google.com,
        Will Deacon <will@kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        linux-modules@vger.kernel.org,
        linux-usb <linux-usb@vger.kernel.org>,
        usb-storage@lists.one-eyed-alien.net,
        linux-watchdog@vger.kernel.org, Julia Lawall <julia.lawall@lip6.fr>
Subject: Re: [PATCH v4 08/12] scripts: Coccinelle script for namespace
 dependencies.
Message-ID: <20190905144655.GB136369@google.com>
References: <20180716122125.175792-1-maco@android.com>
 <20190903150638.242049-1-maennich@google.com>
 <20190903150638.242049-9-maennich@google.com>
 <CAK7LNARgxoXAABNXhO-LzxAm8rh6NJqAm9-iMo2=t2c_6_KXtQ@mail.gmail.com>
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On Wed, Sep 04, 2019 at 06:53:25PM +0900, Masahiro Yamada wrote:
>On Wed, Sep 4, 2019 at 12:07 AM Matthias Maennich <maennich@google.com> wrote:
>>
>> A script that uses the '<module>.ns_deps' files 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@android.com>
>> Signed-off-by: Martijn Coenen <maco@android.com>
>> Acked-by: Julia Lawall <julia.lawall@lip6.fr>
>> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> Signed-off-by: Matthias Maennich <maennich@google.com>
>
>
>Without any correct dependency,
>this does not work.

You are right, 'nsdeps' needs to depend on 'modules' to make that work.
I will fix that in the next version.

>$ make clean; make nsdeps
>cat: modules.order: No such file or directory
>cat: ./modules.order: No such file or directory
>
>
>I do not see any point in the Makefile changes.