Re: [PATCH 1/3] scripts/decode_stacktrace.sh: remove find_module recursion and improve error reporting

[Luca Ceresoli]

Hello Stephen,

On Wed, 8 May 2024 17:35:53 -0400
Stephen Boyd <swboyd@xxxxxxxxxxxx> wrote:

> Quoting Luca Ceresoli (2024-03-11 08:24:54)
> > The find_module() function can fail for two reasons:
> >
> >  * the module was not found
> >  * the module was found but without debugging info
> >
> > In both cases the user is reported the same error:
> >
> >    WARNING! Modules path isn't set, but is needed to parse this symbol
> >
> > This is misleading in case the modules path is set correctly.
> >
> > find_module() is currently implemented as a recursive function based on
> > global variables in order to check up to 4 different paths. This is not
> > straightforward to read and even less to modify.
> >
> > Besides, the debuginfod code at the beginning of find_module() is executed
> > identlcally every time the function is entered, i.e. up to 4 times per each  
> 
> s/identlcally/identically/

Well spotted!

Thanks for reviewing, v2 on its way.

Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com