linux-kernel - Re: [PATCH RFC V2] coccinelle: flag constants being passed for jiffies

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Date:	Sun, 14 Jun 2015 09:02:24 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Nicholas Mc Guire <hofrat@...dl.org>
cc:	Julia Lawall <Julia.Lawall@...6.fr>,
	Gilles Muller <Gilles.Muller@...6.fr>,
	Nicolas Palix <nicolas.palix@...g.fr>,
	Michal Marek <mmarek@...e.cz>, Joe Perches <joe@...ches.com>,
	Andy Whitcroft <apw@...onical.com>,
	John Stultz <john.stultz@...aro.org>, cocci@...teme.lip6.fr,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC V2] coccinelle: flag constants being passed for
 jiffies

> +@...ipt:python depends on report@
> +p << cc.p;
> +timeout << cc.C;
> +@@
> +
> +if str.isdigit(timeout):
> +   if (int(timeout) != 1):
> +      msg = "WARNING: timeout (%s) seems HZ dependent" % (timeout)
> +      coccilib.report.print_report(p[0], msg)

The parentheses in the warning messages around the timeouts seem a little
strange to me.

Otherwise, as a semantic patch, it looks fine.  I can't judge the problem 
being solved though.

julia

> +@...ipt:python depends on strict@
> +p << cc.p;
> +timeout << cc.C;
> +@@
> +
> +# "strict" mode prints the cases that use C-constants != HZ
> +# as well as the numeric constants != 1. This will deliver a false
> +# positives if the C-constant is already in jiffies !
> +if str.isdigit(timeout):
> +   if (int(timeout) != 1):
> +      msg = "WARNING: timeout (%s) is HZ dependent" % (timeout)
> +      coccilib.report.print_report(p[0], msg)
> +elif (timeout != "HZ"):
> +   msg = "INFO: timeout (%s) may be HZ dependent" % (timeout)
> +   coccilib.report.print_report(p[0], msg)
> -- 
> 1.7.10.4
> 
> 
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