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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.

  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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