linux-kernel - Re: sched: make struct task

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Date:   Thu, 5 Sep 2019 17:51:45 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Valentin Schneider <valentin.schneider@....com>,
        Alexey Dobriyan <adobriyan@...il.com>, dm-devel@...hat.com,
        linux-block@...r.kernel.org, rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Andrea Arcangeli <aarcange@...hat.com>,
        Ingo Molnar <mingo@...hat.com>, Jens Axboe <axboe@...nel.dk>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: sched: make struct task_struct::state 32-bit

> @funcmatch@
> identifier func;
> identifier p;
> identifier state_var;
> @@
>
>   func(..., struct task_struct *p, ...
> -      , long state_var
> +      , int state_var
>        ,...)
> {
> 	...
> }
…
> Which seems to be doing roughly what I want.

Can a transformation approach like the following work also
for your software?

@replacement@

identifier func, p, state_var;

@@

 func(...,
      struct task_struct *p,
      ...
,
-     long
+     int
      state_var
,
      ...)

 {

 ...

 }



Regards,
Markus