From: Peter Zijlstra <peterz@infradead.org>
To: Will Deacon <will@kernel.org>
Cc: Andrea Righi <arighi@nvidia.com>, Ingo Molnar <mingo@redhat.com>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Valentin Schneider <vschneid@redhat.com>,
K Prateek Nayak <kprateek.nayak@amd.com>,
Mark Rutland <mark.rutland@arm.com>,
Christian Loehle <christian.loehle@arm.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>,
Phil Auld <pauld@redhat.com>, Breno Leitao <leitao@debian.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 0/2] sched: Enable preferred SMT siblings on NVIDIA Olympus
Date: Wed, 9 Sep 2026 23:51:17 +0200 [thread overview]
Message-ID: <20260909215117.GO776954@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <aqF84So9WUQCDgsz@willie-the-truck>
On Wed, Sep 09, 2026 at 04:36:01PM +0100, Will Deacon wrote:
> On Wed, Sep 09, 2026 at 03:14:15PM +0200, Peter Zijlstra wrote:
> > On Wed, Sep 09, 2026 at 08:26:07AM +0200, Andrea Righi wrote:
> >
> > > Andrea Righi (2):
> > > arm64: topology: Prefer PE0 on NVIDIA Olympus SMT cores
> > > sched/fair: Honor asymmetric SMT priority in idle selection
> > >
> > > arch/arm64/include/asm/topology.h | 1 +
> > > arch/arm64/kernel/smp.c | 1 +
> > > arch/arm64/kernel/topology.c | 51 +++++++++++++++++++++++
> > > kernel/sched/fair.c | 85 +++++++++++++++++++++++++++++++--------
> > > kernel/sched/sched.h | 6 +++
> > > kernel/sched/topology.c | 36 +++++++++++++++++
> > > 6 files changed, 163 insertions(+), 17 deletions(-)
> >
> > I tentatively picked these up, but I need an arm64 ack before I can
> > merge them, and ideally vingu will bless them too :-)
>
> We've had five versions of this in five minutes, but the arch code is
> pretty filthy tbh. Detecting topology based on MIDR is a non-starter,
> sorry.
Yeah, Andrea is a wee bit fast with re-posting. I'll drop this, no
worries.
prev parent reply other threads:[~2026-09-09 21:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-09 6:26 [PATCH v5 0/2] sched: Enable preferred SMT siblings on NVIDIA Olympus Andrea Righi
2026-09-09 6:26 ` [PATCH 1/2] arm64: topology: Prefer PE0 on NVIDIA Olympus SMT cores Andrea Righi
2026-09-09 15:19 ` Dietmar Eggemann
2026-09-09 16:17 ` Andrea Righi
2026-09-10 10:11 ` Dietmar Eggemann
2026-09-11 9:11 ` Andrea Righi
2026-09-11 14:15 ` Dietmar Eggemann
2026-09-09 15:34 ` Will Deacon
2026-09-09 16:07 ` Andrea Righi
2026-09-10 8:53 ` Will Deacon
2026-09-11 6:50 ` Andrea Righi
2026-09-09 6:26 ` [PATCH 2/2] sched/fair: Honor asymmetric SMT priority in idle selection Andrea Righi
2026-09-11 14:11 ` Dietmar Eggemann
2026-09-11 22:34 ` Andrea Righi
2026-09-09 6:36 ` [PATCH v5 0/2] sched: Enable preferred SMT siblings on NVIDIA Olympus K Prateek Nayak
2026-09-09 6:41 ` Andrea Righi
2026-09-09 13:14 ` Peter Zijlstra
2026-09-09 15:36 ` Will Deacon
2026-09-09 21:51 ` Peter Zijlstra [this message]
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