linux-kernel - Re: [PATCH 1/8] cpumask: Replace cpumask_of_cpu with cpumask_of_cpu

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Date:	Fri, 18 Jul 2008 15:30:09 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Mike Travis <travis@....com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Jack Steiner <steiner@....com>, linux-kernel@...r.kernel.org,
	Len Brown <len.brown@...el.com>,
	Dave Jones <davej@...emonkey.org.uk>,
	Paul Jackson <pj@....com>,
	Tigran Aivazian <tigran@...azian.fsnet.co.uk>,
	Robert Richter <robert.richter@....com>,
	Greg Banks <gnb@....com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Adrian Bunk <bunk@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andreas Schwab <schwab@...e.de>,
	Johannes Weiner <hannes@...urebad.de>
Subject: Re: [PATCH 1/8] cpumask: Replace cpumask_of_cpu with cpumask_of_cpu_ptr

On Wednesday 16 July 2008 07:14:30 Mike Travis wrote:
>   * This patch replaces the dangerous lvalue version of cpumask_of_cpu
>     with new cpumask_of_cpu_ptr macros.  These are patterned after the
>     node_to_cpumask_ptr macros.

Hi Mike,

   Should we just put cpumask_of_cpu_map[] in generic code and then have 
cpumask_of_cpu() always return a cpumask_t pointer?  These macros which 
declare things which may be one of two types is a real penalty for code 
readability.

Thanks,
Rusty.
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