linux-kernel - Re: [RFC PATCH 1/2] powerpc/numa: fix cpu_to

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Message-ID: <20150715224758.GS15934@mtj.duckdns.org>
Date:	Wed, 15 Jul 2015 18:47:58 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>
Cc:	Michael Ellerman <mpe@...erman.id.au>,
	David Rientjes <rientjes@...gle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Anton Blanchard <anton@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/2] powerpc/numa: fix cpu_to_node() usage during boot

Hello,

On Wed, Jul 15, 2015 at 03:43:51PM -0700, Nishanth Aravamudan wrote:
> Ok, thank you for clarifying! From a correctness perspective, even if
> the numbers don't match NUMA nodes, should we expect the grouping to be
> split along NUMA topology?

Yeap, the groups get formed according to the node distances.  Nodes
which are not at LOCAL_DISTANCE are always put in different groups.

Thanks.

-- 
tejun
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