From: Heiko Carstens <hca@linux.ibm.com>
To: Mete Durlu <meted@linux.ibm.com>
Cc: Christian Loehle <christian.loehle@arm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Daniel Lezcano <daniel.lezcano@kernel.org>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
Frederic Weisbecker <frederic@kernel.org>,
Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@kernel.org>,
Ilya Leoshkevich <iii@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
linux-s390 <linux-s390@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 4/5] s390/idle: Introduce cpuidle for s390
Date: Tue, 9 Jun 2026 12:40:11 +0200 [thread overview]
Message-ID: <20260609104011.9217Bd8-hca@linux.ibm.com> (raw)
In-Reply-To: <77a82533-2f1c-4bf2-925d-f48accf45951@linux.ibm.com>
On Tue, Jun 09, 2026 at 11:31:22AM +0200, Mete Durlu wrote:
> On 6/9/26 10:12, Christian Loehle wrote:
> > On 6/9/26 08:52, Mete Durlu wrote:
> > > Introduce generic cpuidle driver on s390. Use a two stage approach to
> > > handle idle scenarios and use TEO governor for idle stage selection.
> > > Two stages are, from shallow to deep, idle polling and enabled wait.
> > >
> > > Suggested-by: Christian Borntraeger <borntraeger@linux.ibm.com>
> > > Suggested-by: Heiko Carstens <hca@linux.ibm.com>
> > > Signed-off-by: Mete Durlu <meted@linux.ibm.com>
> > > ---
> > > arch/s390/Kconfig | 5 ++
> > > drivers/cpuidle/Kconfig | 5 ++
> > > drivers/cpuidle/Kconfig.s390 | 12 ++++
> > > drivers/cpuidle/Makefile | 4 ++
> > > drivers/cpuidle/cpuidle-s390.c | 104 +++++++++++++++++++++++++++++++++
> > > 5 files changed, 130 insertions(+)
> > > create mode 100644 drivers/cpuidle/Kconfig.s390
> > > create mode 100644 drivers/cpuidle/cpuidle-s390.c
> >
> > Since this will be hard for anybody without the hardware to maintain,
> > would you maintain it? Or the existing s390 maintainers?
> > If either then please also modify MAINTAINERS to reflect that.
>
>
> Yes, I'll be maintaining the driver. I am not sure if it should be part
> of the patch series but I'll add a new entry like below;
It should be part of this series. Please merge your provided diff into
this patch, and resend the whole series.
next prev parent reply other threads:[~2026-06-09 10:40 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-09 7:52 [PATCH 0/5] s390/idle: CPU idle driver Mete Durlu
2026-06-09 7:52 ` [PATCH 1/5] s390/tick: Remove CIF_NOHZ_DELAY flag Mete Durlu
2026-06-09 8:10 ` Christian Loehle
2026-06-09 9:40 ` Mete Durlu
2026-06-09 9:52 ` Christian Loehle
2026-06-09 10:04 ` Mete Durlu
2026-06-09 10:39 ` Heiko Carstens
2026-06-09 7:52 ` [PATCH 2/5] tick: Remove arch_needs_cpu Mete Durlu
2026-06-09 15:06 ` Thomas Gleixner
2026-06-09 7:52 ` [PATCH 3/5] s390: Enable TIF_POLLING_NRFLAG Mete Durlu
2026-06-09 7:52 ` [PATCH 4/5] s390/idle: Introduce cpuidle for s390 Mete Durlu
2026-06-09 8:06 ` Christian Loehle
2026-06-09 8:12 ` Christian Loehle
2026-06-09 9:31 ` Mete Durlu
2026-06-09 10:40 ` Heiko Carstens [this message]
2026-06-09 7:52 ` [PATCH 5/5] s390/configs: Enable cpuidle driver on s390 Mete Durlu
2026-06-09 8:06 ` [PATCH 0/5] s390/idle: CPU idle driver Christian Loehle
2026-06-09 8:45 ` Mete Durlu
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