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    SubjectRe: [PATCH 3/3] coccicheck: add parallel execution
    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.
    > You might try adding support for gnu parallel instead.
    That is a very interesting and useful tool :) I'd never heard of it
    before. The man page scares me a little bit - lots of options are marked
    as "alpha testing," but the ones i tried seemed to work fine. Anyway,
    without any modifications to Coccinelle, it is possible to do this:

    ls scripts/coccinelle/*/*.cocci | parallel -j+0 make coccicheck COCCI={}

    it seems to behave mostly like my patch, but doesn't cleanup quite as
    well if you decide to kill it with ctrl-c (it leaves instances of spatch
    running). On the upside, it is up to 3 seconds faster than my patch
    (because my patch waits 3 seconds before checking on the number of jobs
    that are running).


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