linux-kernel - Re: [PATCH 6/8] cpumask: Optimize cpumask_of_cpu in lib/smp_processor

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Message-ID: <20080718203321.GA21280@elte.hu>
Date:	Fri, 18 Jul 2008 22:33:21 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Mike Travis <travis@....com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	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
Subject: Re: [PATCH 6/8] cpumask: Optimize cpumask_of_cpu in
	lib/smp_processor_id.c


hmmm:

> --- linux-2.6.tip.orig/lib/smp_processor_id.c
> +++ linux-2.6.tip/lib/smp_processor_id.c

>  	unsigned long preempt_count = preempt_count();
>  	int this_cpu = raw_smp_processor_id();
> -	cpumask_t this_mask;
> +	cpumask_of_cpu_ptr_declare(this_mask);

> -	this_mask = cpumask_of_cpu(this_cpu);
> +	cpumask_of_cpu_ptr_next(this_mask, cpu);

'cpu' is not declared ...

	Ingo
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