linux-kernel - Re: [RFC][PATCH 5/9] perf trace: Add Perl scripting support

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Date:	Tue, 06 Oct 2009 23:09:25 -0500
From:	Tom Zanussi <tzanussi@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org, fweisbec@...il.com,
	rostedt@...dmis.org, lizf@...fujitsu.com, hch@...radead.org
Subject: Re: [RFC][PATCH 5/9] perf trace: Add Perl scripting support

On Tue, 2009-10-06 at 15:00 +0200, Ingo Molnar wrote:
> * Tom Zanussi <tzanussi@...il.com> wrote:
> 
> >  	OPT_BOOLEAN('v', "verbose", &verbose,
> >  		    "be more verbose (show symbol address, etc)"),
> > +	OPT_BOOLEAN('p', "perl", &do_perl,
> > +		    "send output to a Perl script"),
> >  	OPT_STRING('s', "script", &script_name, "file",
> >  		    "script file name"),
> 
> I dont think we want to use up primary option letters one per language. 
> If Perl takes 'p' then what will Python use, 'P'? How about PHP, PEARL 
> and PostScript then? ;-)
> 
> I think it's better to make the language specification part of the 
> -s/--script option, via two methods:
> 
> Explicit:
> 
>   -s Perl::my_script.pl
>   -s pl::my_script.pl
>   -s Python::my_script.py
>   -s Bash::my_script.sh
> 
> Implicit, based on the script extension:
> 
>   -s my_script.pl       # maps to the Perl generator
>   -s my_script.py       # maps to the Python generator
>   -s my_script.sh       # maps to the Bash generator
> 
> I think we also want to have a 'perf -s *' kind of thing to get a list 
> of all available language modules.
> 

I knew somebody would point that out (and suggest a better way ;-)  That
all makes sense - I'll make these changes in the next version.

Tom


> 	Ingo

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