linux-kernel - Re: [PATCH 1/2] cpustat: use accessor functions for get/set/add

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Date:	Fri, 22 Feb 2013 14:58:51 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Kevin Hilman <khilman@...aro.org>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linaro-kernel@...ts.linaro.org
Subject: Re: [PATCH 1/2] cpustat: use accessor functions for get/set/add

On Fri, 2013-02-22 at 14:38 +0100, Frederic Weisbecker wrote:
> Looks good, just a minor neat:
> 
> On Thu, Feb 21, 2013 at 09:56:43PM -0800, Kevin Hilman wrote:
> > diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
> > index 66b7078..df8ad75 100644
> > --- a/include/linux/kernel_stat.h
> > +++ b/include/linux/kernel_stat.h
> > @@ -32,7 +32,7 @@ enum cpu_usage_stat {
> >  };
> >  
> >  struct kernel_cpustat {
> > -	u64 cpustat[NR_STATS];
> > +	u64 _cpustat[NR_STATS];
> 
> Why do you need the underscore?

To make sure there's nobody still referencing the data directly instead
of through the accessors.


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