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

[Randy Dunlap]

On Thu, 26 Apr 2007 01:30:59 -0700 Andrew Morton wrote:

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

singing?


> 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.

I made a short list last night, but yours is better/longer.
Here are a few more items:

- check for new docs and/or kernel-doc
- storage class should be first
- don't use deprecated APIs
- no floating point
- no MIN/MAX
- printk wants KERN_* levels
- limit on new /proc files


---
~Randy
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