linux-kernel - Re: [PATCH v3] topology: make core_mask include at least cluster

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Date:   Mon, 21 Mar 2022 14:30:22 +0000
From:   Will Deacon <will@...nel.org>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     Darren Hart <darren@...amperecomputing.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux Arm <linux-arm-kernel@...ts.infradead.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Catalin Marinas <Catalin.Marinas@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Valentin Schneider <Valentin.Schneider@....com>,
        "D . Scott Phillips" <scott@...amperecomputing.com>,
        Ilkka Koskinen <ilkka@...amperecomputing.com>,
        stable@...r.kernel.org, Barry Song <21cnbao@...il.com>
Subject: Re: [PATCH v3] topology: make core_mask include at least
 cluster_siblings

On Wed, Mar 16, 2022 at 03:55:41PM +0000, Sudeep Holla wrote:
> On Wed, Mar 16, 2022 at 08:20:32AM -0700, Darren Hart wrote:
> > On Wed, Mar 16, 2022 at 03:48:50PM +0100, Dietmar Eggemann wrote:
> 
> [...]
> 
> > >
> > > Yeah, I can see your point. It's the smaller hack. My solution just
> > > prevents us to manipulate the coregroup mask only to get the MC layer
> > > degenerated by the core topology code. But people might say that's a
> > > clever thing to do here. So I'm fine with your original solution as well.
> > >
> > > [...]
> >
> > Thanks Dietmar,
> >
> > Sudeep, do we have sufficient consensus to pull in this patch?
> 
> Indeed. I have already Acked, and sure after all these discussions we have
> concluded that this is the best we can do though not matches everyone's taste.
> 
> Greg or Will(not sure why he had asked since v3 doesn't touch arm64),
> Can one of you pick this patch ?

Right, this doesn't touch arm64 any more so I don't think I'm the right
person to queue it.

Will