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Wysocki" , Daniel Lezcano , Anna-Maria Behnsen , Frederic Weisbecker , Ingo Molnar , Thomas Gleixner Cc: Ilya Leoshkevich , Christian Borntraeger , linux-s390 , linux-kernel References: <20260609075213.31094-1-meted@linux.ibm.com> <20260609075213.31094-5-meted@linux.ibm.com> <5d9a3d2e-f083-49d4-a311-7801e70ac1a2@arm.com> Content-Language: en-US From: Mete Durlu In-Reply-To: <5d9a3d2e-f083-49d4-a311-7801e70ac1a2@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=HppG3UTS c=1 sm=1 tr=0 ts=6a27dd70 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=JfrnYn6hAAAA:8 a=VwQbUJbxAAAA:8 a=KKAkSRfTAAAA:8 a=pGLkceISAAAA:8 a=ypV6uxKLhDquFfQIcXMA:9 a=QEXdDO2ut3YA:10 a=1CNFftbPRP8L7MoqJWF3:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-GUID: bVv7IztOJbrWpdhV6_3ZAvs9WqRqRFwh X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjA5MDA4NCBTYWx0ZWRfX+RTocZaIBDMd XInB9udkxczvQ8t4edkgXKnic90bhwfQ8j3u1PaWYUjNgzj/QfuIcAAj8+jY++ViViQh1Pgi1QT 6Y030miLmIu9qZAVlhd/WeuRzBreT3VkJePvCr4B8CXsv6/RAO3Pq6nl1WAs9rNSZx9Sy7eBMPt 1eWOImUtU05SH4/JDauXgzRQRiupNAoawoC+GDMBA9n518AKF0qdRzxXnF5iZOepKwo1dXA/eqQ fHPfNdBdSoa22pFFGoHUHZ2fyMSgvbVHJLsvia9fbwF198WFJv5laP+qSYMqWYocDpuBgenVjVT JQ4BDQclDbPKVuSt6DqulKo2j+XiUr7t9IHtaY5SpLldYMJbYeSf+ecmNizUzlH5JgTZWLadWUA WrqW17BX0Eq6OQ6gpXahBYQXrtaIa2ZtzA3F0nb/0JWZnPR9nVZocUWW8hNHDfFdHLX62yDRvDY zi5uKA83eLltnv0SKLw== X-Proofpoint-ORIG-GUID: bVv7IztOJbrWpdhV6_3ZAvs9WqRqRFwh X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-09_02,2026-06-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 phishscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 clxscore=1015 bulkscore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606090084 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 >> Suggested-by: Heiko Carstens >> Signed-off-by: Mete Durlu >> --- >> 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; diff --git a/MAINTAINERS b/MAINTAINERS index e035a3be797c..6b1eaa3abce7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6766,6 +6766,13 @@ L: linux-riscv@lists.infradead.org S: Maintained F: drivers/cpuidle/cpuidle-riscv-sbi.c +CPUIDLE DRIVER - S390 +M: Mete Durlu +L: linux-pm@vger.kernel.org +L: linux-s390@vger.kernel.org +S: Maintained +F: drivers/cpuidle/cpuidle-s390.c + CPUMASK API [RUST] M: Viresh Kumar R: Yury Norov @@ -23499,6 +23506,7 @@ F: Documentation/arch/s390/ F: arch/s390/ F: drivers/s390/ F: drivers/watchdog/diag288_wdt.c +F: drivers/cpuidle/cpuidle-s390.c S390 COMMON I/O LAYER M: Vineeth Vijayan