linux-kernel - Re: [PATCH] scripts: add_namespace: Fix coccicheck failed

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Date:   Sun, 6 Oct 2019 08:44:14 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Markus Elfring <Markus.Elfring@....de>
cc:     YueHaibing <yuehaibing@...wei.com>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Michal Marek <michal.lkml@...kovi.net>,
        Matthias Männich <maennich@...gle.com>,
        Jessica Yu <jeyu@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        cocci@...teme.lip6.fr, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scripts: add_namespace: Fix coccicheck failed



On Sun, 6 Oct 2019, Markus Elfring wrote:

> > Now all scripts in scripts/coccinelle to be automatically called
> > by coccicheck. However new adding add_namespace.cocci does not
> > support report mode, which make coccicheck failed.
> > This add "virtual report" to  make the coccicheck go ahead smoothly.
>
> I find that this change description needs improvements and corrections.
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?id=43b815c6a8e7dbccb5b8bd9c4b099c24bc22d135#n151
>
> I would find a commit subject like “scripts: add_namespace:
> Add support for the default coccicheck operation mode” more appropriate
> (if this software development will be clarified further in the shown direction
> at all).

Please let this go.  Please stop criticizing the English of others.  The
message is understandable, and even more informative than what you
propose.

julia

>
>
> > Fixes: eb8305aecb95 ("scripts: Coccinelle script for namespace dependencies.")
>
> I got the impression that a sub-optimal solution approach would be chosen here.
> The automatic script execution is requested despite of the fact
> that the input parameter “name space” (SmPL identifier “virtual.ns”)
> will be required.
>
> I am curious under which circumstances an other transformation
> can become more attractive.
> [PATCH 0/2] Coccinelle: Extend directory hierarchy
> https://lore.kernel.org/cocci/d8c97f0a-6ce2-0f5a-74a9-63366c17f3a6@web.de/
> https://lore.kernel.org/patchwork/project/lkml/list/?series=412494
> https://lkml.org/lkml/2019/10/2/60
>
>
> > +++ b/scripts/coccinelle/misc/add_namespace.cocci
> > @@ -6,6 +6,8 @@
> >  /// add a missing namespace tag to a module source file.
> >  ///
> >
> > +virtual report
> > +
> >  @has_ns_import@
>
> If you would insist on the complete support for the operation mode “report”
> of the tool “coccicheck”, I would eventually expect that another SmPL rule
> will provide a helpful message instead of immediately exiting after
> the script variable “ns” was defined.
> Are you going to take any additional software design options better
> into account?
>
> Regards,
> Markus
>