linux-kernel - Re: [cocci] [RFC] Sharing data processing resources for selected SmPL scripts?

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Message-ID: <b22df436-7bf1-4909-8150-03b65f657a60@web.de>
Date: Fri, 5 Sep 2025 13:14:08 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Julia Lawall <julia.lawall@...ia.fr>, cocci@...ia.fr
Cc: kernel-janitors@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [cocci] [RFC] Sharing data processing resources for selected SmPL
 scripts?

>> @display@
>> identifier action;
>> type t;
>> @@
>> *t * action(...)
>>  {
>>  ... when any
…>>  }
>>
>>
>> I interpret such a search approach in the way that it should extract some data
>> from a lot of source code places.
>> Thus I imagine that it results also in special software run time characteristics
>> which matter especially for big codebases like Linux.
> 
> I guess it would be quite fast,

I am curious how such development views will evolve further
(depending on the data processing environment you may use).

>                                 because it will just find the deader of
> each function.

Header information should be found for several function implementations
from selected directories.
If you would dare to try the shown SmPL script out on the complete Linux codebase,
a huge diff output will probably be generated.
It might be more helpful to try it out on a few header/source files
with a more reasonable size.

Other data structures might become also more attractive for the storage
and documentation of found pointer types in combination with known functions.

Regards,
Markus