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

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Message-ID: <cc512954-2e1d-a165-f1f1-2c489fd6d3a9@redhat.com>
Date:   Tue, 10 Nov 2020 05:12:26 -0800
From:   Tom Rix <trix@...hat.com>
To:     Joe Perches <joe@...ches.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,
        linux-rtc@...r.kernel.org, linux-scsi@...r.kernel.org,
        linux-aspeed@...ts.ozlabs.org, linux-samsung-soc@...r.kernel.org,
        linux-btrfs@...r.kernel.org, linux-nfs@...r.kernel.org,
        tipc-discussion@...ts.sourceforge.net, alsa-devel@...a-project.org,
        linux-rpi-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org
Subject: Re: Subject: [RFC] clang tooling cleanups


On 11/9/20 6:52 PM, Joe Perches wrote:
> 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.

Thanks for pointing this out.

I will take a look at it.

Tom

>
>