linux-kernel - Re: [PATCH] x86: new topology for multi-NUMA-node CPUs

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Date:	Thu, 18 Sep 2014 14:57:39 -0700
From:	Dave Hansen <dave@...1.net>
To:	linux-kernel@...r.kernel.org
CC:	dave.hansen@...ux.intel.com, a.p.zijlstra@...llo.nl,
	mingo@...nel.org, hpa@...ux.intel.com, brice.goglin@...il.com,
	bp@...en8.de
Subject: Re: [PATCH] x86: new topology for multi-NUMA-node CPUs

On 09/18/2014 12:33 PM, Dave Hansen wrote:
> @@ -410,6 +442,8 @@ void set_cpu_sibling_map(int cpu)
>  			} else if (i != cpu && !c->booted_cores)
>  				c->booted_cores = cpu_data(i).booted_cores;
>  		}
> +		if (match_mc(c, o) == !topology_same_node(c, o))
> +			primarily_use_numa_for_topology();
>  	}
>  }

I went to test this on some more systems.  The "== !" above should be a
"!=".  The test is meant to see if a CPU pair is in the same mc group,
but not in the same node.

I'll fix it in the next version.
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