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

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Message-ID: <4E2EC6C7.3080009@suse.cz>
Date:	Tue, 26 Jul 2011 15:53:11 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Nicolas Palix <Nicolas.Palix@...ia.fr>
Cc:	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 26.7.2011 15:33, Nicolas Palix wrote:
> Hi,
>
> On Thu, Jul 14, 2011 at 4:14 AM, Greg Dietsche<gregory.dietsche@....edu>  wrote:
>> On 07/12/2011 09:42 PM, Joe Perches wrote:
>>>
>>> On Tue, 2011-07-12 at 20:26 -0500, Greg Dietsche wrote:
>>>
>>>>
>>>> For example to process 6 SmPL patches at the same time:
>>>>         make coccicheck PARALLEL=6
>>>> Results are held in /tmp until the scripts finish. By doing this the
>>>> script is able to collate the results from each SmPL patch instead of
>>>> interleaving them in the output.

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
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