linux-kernel - Re: [PATCH 2/5] x86: Provide CPU topology information for multi-node processors

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Date:	Thu, 6 Aug 2009 18:30:46 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Andreas Herrmann <andreas.herrmann3@....com>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	Borislav Petkov <borislav.petkov@....com>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 2/5] x86: Provide CPU topology information for
 multi-node processors

Hi Andrea,

On Wed, 5 Aug 2009 17:48:11 +0200 Andreas Herrmann <andreas.herrmann3@....com> wrote:
>
> @@ -1061,8 +1070,10 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
>  	for_each_possible_cpu(i) {
>  		alloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
>  		alloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
> +		alloc_cpumask_var(&per_cpu(cpu_node_map, i), GFP_KERNEL);
>  		alloc_cpumask_var(&cpu_data(i).llc_shared_map, GFP_KERNEL);
>  		cpumask_clear(per_cpu(cpu_core_map, i));
> +		cpumask_clear(per_cpu(cpu_node_map, i));

I noticed this in linux-next ... you can use zalloc_cpumask_var() instead
of alloc_cpumask_var() followed by cpumask_clear().

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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