From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [RFC 1/4] ARM: topology: Add arch_scale_freq_power function
Date: Wed, 13 Jun 2012 23:51:21 +0200
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To: Andy Whitcroft <apw@canonical.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linaro-dev@lists.linaro.org, devicetree-discuss@lists.ozlabs.org, linux@arm.linux.org.uk, grant.likely@secretlab.ca, rob.herring@calxeda.com
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On Wed, 2012-06-13 at 20:27 +0100, Andy Whitcroft wrote:

> Actually if it was a new line, it would have been reported, at least in
> theory:
> 
>     # check for memory barriers without a comment.
> 		    if ($line =~
>     /\b(mb|rmb|wmb|read_barrier_depends|smp_mb|smp_rmb|smp_wmb|smp_read_barrier_depends)\(/)
>     {
> 	if (!ctx_has_comment($first_line, $linenr)) {
> 	    CHK("MEMORY_BARRIER",
> 		"memory barrier without comment\n" . $herecurr);
> 	}
>     }

Oh sweet, we already have something for that.. But yeah I'd promote that
CHK to something stronger like Joe said. Maybe even error. Memory
barriers are magic, not adding proper comments should be a capital
offense.