linux-kernel - Re: [Cocci] [PATCH v4 3/3] Documentation: Coccinelle: Modify Parallelisation information in docs

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Message-ID: <alpine.DEB.2.22.394.2010121038530.2901@hadrien>
Date:   Mon, 12 Oct 2020 10:39:39 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Sumera Priyadarsini <sylphrenadin@...il.com>
cc:     michal.lkml@...kovi.net, linux-doc@...r.kernel.org,
        Gilles.Muller@...6.fr, corbet@....net, nicolas.palix@...g.fr,
        linux-kernel@...r.kernel.org, cocci@...teme.lip6.fr
Subject: Re: [Cocci] [PATCH v4 3/3] Documentation: Coccinelle: Modify
 Parallelisation information in docs

On Sun, 11 Oct 2020, Sumera Priyadarsini wrote:

> This patchset modifies coccicheck to use at most one thread per core by
> default in machines with more than 4 hyperthreads for optimal performance.
> Modify documentation in coccinelle.rst to reflect the same.
>
> Signed-off-by: Sumera Priyadarsini <sylphrenadin@...il.com>

Acked-by: Julia Lawall <julia.lawall@...ia.fr>

Jonathan, will you take this patch?

thanks,
julia

> ---
>  Documentation/dev-tools/coccinelle.rst | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/dev-tools/coccinelle.rst b/Documentation/dev-tools/coccinelle.rst
> index 74c5e6aeeff5..530d8d313601 100644
> --- a/Documentation/dev-tools/coccinelle.rst
> +++ b/Documentation/dev-tools/coccinelle.rst
> @@ -130,8 +130,10 @@ To enable verbose messages set the V= variable, for example::
>  Coccinelle parallelization
>  --------------------------
>
> -By default, coccicheck tries to run as parallel as possible. To change
> -the parallelism, set the J= variable. For example, to run across 4 CPUs::
> +By default, coccicheck uses at most 1 thread per core in a machine
> +with more than 4 hyperthreads. In a machine with upto 4 threads,
> +all threads are used. To change the parallelism, set the J= variable.
> +For example, to run across 4 CPUs::
>
>     make coccicheck MODE=report J=4
>
> --
> 2.25.1
>
> _______________________________________________
> Cocci mailing list
> Cocci@...teme.lip6.fr
> https://systeme.lip6.fr/mailman/listinfo/cocci
>

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