linux-kernel - Re: [PATCH 3/3] coccicheck: add parallel execution

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Message-ID: <4E2F43C8.8080805@gregd.org>
Date:	Tue, 26 Jul 2011 17:46:32 -0500
From:	Greg Dietsche <greg@...gd.org>
To:	Michal Marek <mmarek@...e.cz>
CC:	Nicolas Palix <Nicolas.Palix@...ia.fr>,
	Greg Dietsche <gregory.dietsche@....edu>,
	Joe Perches <joe@...ches.com>, julia@...u.dk,
	Gilles.Muller@...6.fr, rdunlap@...otime.net,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	cocci@...u.dk
Subject: Re: [PATCH 3/3] coccicheck: add parallel execution

On 7/26/2011 8:53 AM, Michal Marek wrote:
> Why not move the loop into some Makefile and let make take care of the 
> parallel execution? Something among the lines of
>
> results := check1.out check2.out ... (generated)
> coccicheck: $(results)
>     cat $^
>
> %.out: FORCE
>     ... run given test and store its result ...
>
> then the user can simply type make -j6 coccicheck.
>
> Note: I haven't seen the patch, I only got Nicolas' mail now.
>
> Michal
>

yes, I agree, that would be better - especially from a user perspective.
I'm not much of a makefile expert at all. I did try that approach 
initially, but it seemed like it was going to turn into a rewrite of the 
coccinelle script. If someone can do it via make, I'd say go for it :)  
I won't have much free time for the foreseeable future to tackle it. 
using "make -j" is much more comfortable and intuitive than typing 
PARALLEL= ...

Greg
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