linux-kernel - Re: Subject: [RFC] clang tooling cleanups

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Date:   Mon, 09 Nov 2020 18:52:08 -0800
From:   Joe Perches <joe@...ches.com>
To:     trix@...hat.com, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com, cocci <cocci@...teme.lip6.fr>
Cc:     linux-pm@...r.kernel.org, linux-crypto@...r.kernel.org,
        qat-linux@...el.com, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-iio@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-mmc@...r.kernel.org,
        netdev@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com,
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        tipc-discussion@...ts.sourceforge.net, alsa-devel@...a-project.org,
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Subject: Re: Subject: [RFC] clang tooling cleanups

On Tue, 2020-10-27 at 09:42 -0700, trix@...hat.com wrote:
> This rfc will describe
> An upcoming treewide cleanup.
> How clang tooling was used to programatically do the clean up.
> Solicit opinions on how to generally use clang tooling.
> 
> The clang warning -Wextra-semi-stmt produces about 10k warnings.
> Reviewing these, a subset of semicolon after a switch looks safe to
> fix all the time.  An example problem
> 
> void foo(int a) {
>      switch(a) {
>      	       case 1:
> 	       ...
>      }; <--- extra semicolon
> }
> 
> Treewide, there are about 100 problems in 50 files for x86_64 allyesconfig.
> These fixes will be the upcoming cleanup.

coccinelle already does some of these.

For instance: scripts/coccinelle/misc/semicolon.cocci

Perhaps some tool coordination can be done here as
coccinelle/checkpatch/clang/Lindent call all be used
to do some facet or another of these cleanup issues.