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Date:   Thu, 1 Feb 2018 14:33:44 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     subhra mazumdar <subhra.mazumdar@oracle.com>
Cc:     linux-kernel@vger.kernel.org, mingo@redhat.com,
        steven.sistare@oracle.com, dhaval.giani@oracle.com
Subject: Re: [RESEND RFC PATCH V3] sched: Improve scalability of
 select_idle_sibling using SMT balance
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References: <20180129233102.19018-1-subhra.mazumdar@oracle.com>
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On Thu, Feb 01, 2018 at 01:33:35PM +0100, Peter Zijlstra wrote:
> I think you want to go allocate sched_domain_shared for the MC level and
> use that, much like sd_llc_shared.

Also, you'd want to try and get performance numbers for something like
Power8, which has SMT8 and fairly expensive atomic ops.