linux-kernel - Re: [PATCH 03/14] sched/topology: Fix building of overlapping sched-groups

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Message-ID: <1493669323.31102.15.camel@redhat.com>
Date:   Mon, 01 May 2017 16:08:43 -0400
From:   Rik van Riel <riel@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>, mingo@...nel.org,
        lvenanci@...hat.com
Cc:     lwang@...hat.com, efault@....de, tglx@...utronix.de,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 03/14] sched/topology: Fix building of overlapping
 sched-groups

On Fri, 2017-04-28 at 15:20 +0200, Peter Zijlstra wrote:
> When building the overlapping groups, we very obviously should start
> with the previous domain of _this_ @cpu, not CPU-0.

> With patch this looks like:
> 
>   [] CPU1 attaching sched-domain:
>   []  domain 0: span 0-2 level NUMA
>   []   groups: 1 0 2
>   []   domain 1: span 0-3 level NUMA
>   []    groups: 0-2 (cpu_capacity = 3072) 0,2-3 (cpu_capacity = 3072)
> 
> Cc: stable@...r.kernel.org
> Fixes: e3589f6c81e4 ("sched: Allow for overlapping sched_domain
> spans")
> Debugged-by: Lauro Ramos Venancio <lvenanci@...hat.com>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>

Acked-by: Rik van Riel <riel@...hat.com>