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Re: [dm-devel] sched: make struct task_struct::state 32-bit



On 23/09/2019 12:43, Julia Lawall wrote:
>>>> // FIXME: match functions that do something with state_var underneath?
>>>> // How to do recursive rules?
>>>
>>> You want to look at the definitions of called functions?  Coccinelle
>>> doesn't really support that, but there are hackish ways to add that.  How
>>> many function calls would you expect have to be unrolled?
>>>
>>
>> I wouldn't expect more than a handful (~5). I suppose this has to do with
>> injecting some Python/Ocaml code? I have some examples bookmarked but
>> haven't gotten to stare at them long enough.
> 
> You can look at iteration.cocci, but it's a bit complex.
> 
> You could match definitions of functions that do what you are interested
> in, then store the names of these functions in a list (python/ocaml), and
> then look for calls to those functions.  Something like
> 
> identifier fn : script:ocaml() { in_my_list fn };
> 

That seems promising, will try to have a look when I get some spare cycles.
Thanks for the pointers!


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