linux-kernel - Re: [RFC 3/3] sched/topology: Different sched groups must not have the same balance cpu

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Message-ID: <20170418123216.r67dymncczjj6zw7@hirez.programming.kicks-ass.net>
Date:   Tue, 18 Apr 2017 14:32:16 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Lauro Venancio <lvenanci@...hat.com>
Cc:     linux-kernel@...r.kernel.org, lwang@...hat.com, riel@...hat.com,
        Mike Galbraith <efault@....de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [RFC 3/3] sched/topology: Different sched groups must not have
 the same balance cpu

On Mon, Apr 17, 2017 at 12:34:05PM -0300, Lauro Venancio wrote:
> This patch ensures tree things:
> 
> 1) different instances of the same group share the same
> sched_group_capacity instance.
> 
> 2) instances of different groups don't share the same
> sched_group_capacity instance.
> 
> 3) the group balance cpu must be one of the cpus where the group is
> installed.
> 
> 
> I am rebasing this patch on top of your patches.

Well, I would rather have 3 patches, each with a comprehensible
changelog.

I had already rebased the patch (trivial) so that's not the problem.
Explaining what and why it does things is.

And as per the usual rules, if it does 3 things it should be 3 patches.