linux-kernel - Re: [PATCH 1/2] sched/topology: Set correct numa topology type

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Message-Id: <20180821110258.GA2080@linux.vnet.ibm.com>
Date:   Tue, 21 Aug 2018 04:02:58 -0700
From:   Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Rik van Riel <riel@...riel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        Andre Wild <wild@...ux.vnet.ibm.com>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH 1/2] sched/topology: Set correct numa topology type

* Srikar Dronamraju <srikar@...ux.vnet.ibm.com> [2018-08-10 22:30:18]:

> With commit 051f3ca02e46 ("sched/topology: Introduce NUMA identity node
> sched domain") scheduler introduces an new numa level. However this
> leads to numa topology on 2 node systems no more marked as NUMA_DIRECT.
> After this commit, it gets reported as NUMA_BACKPLANE. This is because
> sched_domains_numa_level is now 2 on 2 node systems.
> 
> Fix this by allowing setting systems that have upto 2 numa levels as
> NUMA_DIRECT.
> 
> While here remove a code that assumes level can be 0.
> 
> Fixes: 051f3ca02e46 "Introduce NUMA identity node sched domain"
> Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
> ---

Hey Peter,

Did you look at these two patches?

-- 
Thanks and Regards
Srikar Dronamraju