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

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Date:	Thu, 6 Aug 2009 18:15:52 +0200
From:	Andreas Herrmann <andreas.herrmann3@....com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
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

On Thu, Aug 06, 2009 at 06:30:46PM +1000, Stephen Rothwell wrote:
> 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().

I know, there is a collision with a patch in linux-next that replaced
alloc_cpumask_var/cpumask_clear with the zalloc version.

(a) Either that patch should be adapted to change also the new allocation.
(b) I can also change all those allocation to zalloc with my patch.

Make your choice:

[ ] (a)
[ ] (b)


Thanks,

Andreas

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