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Date: Fri, 01 Oct 2021 16:22:46 -0700 From: Tim Chen <tim.c.chen@...ux.intel.com> To: Peter Zijlstra <peterz@...radead.org>, Vincent Guittot <vincent.guittot@...aro.org> Cc: Barry Song <21cnbao@...il.com>, Dietmar Eggemann <dietmar.eggemann@....com>, LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...hat.com>, Aubrey Li <aubrey.li@...ux.intel.com>, Borislav Petkov <bp@...en8.de>, Daniel Bristot de Oliveira <bristot@...hat.com>, Ben Segall <bsegall@...gle.com>, Catalin Marinas <catalin.marinas@....com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Guodong Xu <guodong.xu@...aro.org>, "H. Peter Anvin" <hpa@...or.com>, Jonathan Cameron <jonathan.cameron@...wei.com>, Juri Lelli <juri.lelli@...hat.com>, "Cc: Len Brown" <lenb@...nel.org>, ACPI Devel Maling List <linux-acpi@...r.kernel.org>, LAK <linux-arm-kernel@...ts.infradead.org>, Linuxarm <linuxarm@...wei.com>, Mark Rutland <mark.rutland@....com>, Mel Gorman <mgorman@...e.de>, msys.mizuma@...il.com, "Zengtao (B)" <prime.zeng@...ilicon.com>, "Rafael J. Wysocki" <rjw@...ysocki.net>, Steven Rostedt <rostedt@...dmis.org>, Barry Song <song.bao.hua@...ilicon.com>, Sudeep Holla <sudeep.holla@....com>, Thomas Gleixner <tglx@...utronix.de>, "Rafael J. Wysocki" <rafael@...nel.org>, Valentin Schneider <valentin.schneider@....com>, Will Deacon <will@...nel.org>, x86 <x86@...nel.org>, yangyicong <yangyicong@...wei.com> Subject: Re: [PATCH RESEND 0/3] Represent cluster topology and enable load balance between clusters On Fri, 2021-10-01 at 16:57 +0200, Peter Zijlstra wrote: > On Fri, Oct 01, 2021 at 12:39:56PM +0200, Vincent Guittot wrote: > > Hi Barry, > > > > On Fri, 1 Oct 2021 at 12:32, Barry Song <21cnbao@...il.com> wrote: > > > Hi Vincent, Dietmar, Peter, Ingo, > > > Do you have any comment on this first series which exposes > > > cluster topology > > > of ARM64 kunpeng 920 & x86 Jacobsville and supports load balance > > > only for > > > the 1st stage? > > > I will be very grateful for your comments so that things can move > > > forward in the > > > right direction. I think Tim also looks forward to bringing up > > > cluster > > > support in > > > Jacobsville. > > > > This patchset makes sense to me and the addition of a new > > scheduling > > level to better reflect the HW topology goes in the right > > direction. > > So I had a look, dreading the selecti-idle-sibling changes, and was > pleasantly surprised they're gone :-) > > As is, this does indeed look like something mergable without too much > hassle. > > The one questino I have is, do we want default y? I also agree that default y is preferable. > > The one nit I have is the Kconfig text, I'm not really sure that's > clarifying what a cluster is. Do you have a preference of a different name other than cluster? Or simply better documentation on what a cluster is for ARM64 and x86 in Kconfig? Thanks. Tim
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