linux-kernel - Re: [PATCH 0/9] Kconfig: cleanup s390 v2.

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Message-Id: <20070426013059.ce948f50.akpm@linux-foundation.org>
Date:	Thu, 26 Apr 2007 01:30:59 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
	mb@...sch.de, linville@...driver.com, maxextreme@...il.com,
	gregkh@...e.de
Subject: Re: [PATCH 0/9] Kconfig: cleanup s390 v2.

On Thu, 26 Apr 2007 02:32:06 +0200 Arnd Bergmann <arnd@...db.de> wrote:

> On Thursday 26 April 2007, Andrew Morton wrote:
> > It would be neat if someone could create and maintain a new
> > scripts/spot-common-mistakes.  Feed it a unified diff and it would complain
> > about newly-added code (and only newly-added code) which has busted
> > whitespace, adds new semaphores, adds new kernel_thread calls, etc, etc.
> 
> http://patchstylecheck.googlecode.com/svn/trunk/patchstylecheckemail.pl
> Might serve as a starting point for this. It doesn't have any semantic
> checks right now, but I guess they can be added.

oh man, every patch I review, every bug I fix, I dream of this.



Wishlist:

- wire it up to a robot which monitors all Linux mailing lists and sends
  machine-review comments back to originators.  This will be a huge win by
  eliminating so much stupid crap.  

- auto-detect wordwrapped and tab-replaced emails (oh glory)

- auto-detect code wider than 80-cols (swoon)

- auto-detect missing Signed-off-by:

- auto-check patch format and protocol, as per
  http://www.zip.com.au/~akpm/linux/patches/stuff/tpp.txt and
  http://linux.yyz.us/patch-format.html

- teach it about semantics:

  - kthread instead of kernel_thread

  - mutexes instead of semaphores

  - the whole plethora of whitespace uckfuppednesses

  - needlessly-initialised-to-zero-static-variables

  - extern-decls-in-C

  - EXPORT_SYMBOL(foo) is placed immediately after foo()'s closing
    brace

    Hard to do?  Could just whine about all EXPORT_SYMBOL's which
    aren't immediately preceded by ^}$ or by ;$

  - new typedefs

  - use of uint32_t and friends

  - use of BUG_ON and BUG, frankly.  The thing's a damn pest.  Suggest
    WARN_ON+recover-from-it.

  - use of `if ((var = expr()))' and similar

  - large inlined functions?

  - braces around single statements (advanced topic ;))

  - StudlyCaps?

  - anything called "tmp" or "temp"

  - old-style struct initialisers

  - non-ascii characters(?)

  - lots more to come, I'm sure.

-
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