lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 28 Oct 2020 14:26:12 +1100 (AEDT)
From:   Finn Thain <fthain@...egraphics.com.au>
To:     Tom Rix <trix@...hat.com>
cc:     linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        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: [RFC] clang tooling cleanups


On Tue, 27 Oct 2020, 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.
> 

This tooling is very impressive. It makes possible an idea that I had a 
while ago, to help make code review more efficient. It works like this. 

Suppose a patch, p, is the difference between the new tree, n, and the old 
tree, o. That is, p = n - o.

Now let clang-tidy be the transformation 't'. This gets you a much more 
readable patch submission, P = t(n) - t(o).

The only difficulty is that, if I submit P intead of p then 'git am' will 
probably reject it. This is solved by a little tooling around git, such 
that, should a patch P fail to apply, the relevant files are automatically 
reformatted with the officially endorsed transformation t, to generate a 
minimal cleanup patch, such that P can be automatically applied on top.

If the patch submission process required* that every patch submission was 
generated like P and not like p, it would immediately eliminate all 
clean-up patches from the workload of all reviewers, and also make the 
reviewers' job easier because all submissions are now formatted correctly, 
and also avoid time lost to round-trips, such as, "you can have a 
reviewed-by if you respin to fix some minor style issues".

* Enforcing this, e.g. with checkpatch, is slightly more complicated, but 
it works the same way: generate a minimal cleanup patch for the relevant 
files, apply the patch-to-be-submitted, and finally confirm that the 
modified files are unchanged under t.

Powered by blists - more mailing lists