From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA3C83264DE; Tue, 9 Jun 2026 14:14:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.156.1 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781014474; cv=none; b=Rjz1NyX4PFMEE84GjguYoF2HXiCVLKcBjaFm+M6eaZhKcCTw/W1P9V3sR8Tg+1EUPmvRJm2Tazs/w5AEiCHO4xt7HQRY3avAm04GcpA4z112iJSP0x/p4vOjPIfnCe7m+vSMP65UNj82KM1Rfn1qwx9xEVZcy8dWx33nfERCVJk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781014474; c=relaxed/simple; bh=qX/L5XEwLN5iF1idpVIZod92wfeI1hQ2kQXAa+ytyrg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VZKXo3EVPtb89VfBc9CZomdX0d6cRePES4tGqvohM3/aB38UOJPg+eMjtPeRzhmMBqHfdQFyDflpTAy7TEmfQaLEre2IXGRZ39anUpJY5gk9Qk6zTY1oMeOAd4AdurRcZ1QkH6Aq6mjZwbuDoTBjEkMuiesk5ZEscVqysZXpc9w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=YI3kMwQG; arc=none smtp.client-ip=148.163.156.1 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="YI3kMwQG" Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 65917d1F2560492; Tue, 9 Jun 2026 14:14:25 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=EzyR/k PcSy3KtlDTTxNkqDZuLkjY8R98lY53k50VoNE=; b=YI3kMwQGuxR2mT1E6mWUfQ FREoir44H03EjT76mjxPp6WxjIn7UjU2uPEOhT6SHfwADm+ZwmHVNhniTy4Ahcsb 8TUKB/CSRsYyU0WwTB7uGQMGCpa3wAhTgT88FFE7EmDfkejNzs9fohmO1wiI/6mc tqtjKFJmKtiplg6PVkEYUgI8oSYHACokgJachhN/kJfmbVs00ZomPY6l5YVDY6c3 /069YL+4Kj0wzd7XTtv+n4xc3kyqqL/kZmdUoczUnsMLIGnwdbeeT0S6EtSQdMXI G+/pO343u7oaYeLDYgQdrLOnfwfKSJPSdq8FKkwviMWQjd/H9fg0vA0hPmqoV7mA == Received: from ppma21.wdc07v.mail.ibm.com (5b.69.3da9.ip4.static.sl-reverse.com [169.61.105.91]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4emb7qmhby-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 09 Jun 2026 14:14:25 +0000 (GMT) Received: from pps.filterd (ppma21.wdc07v.mail.ibm.com [127.0.0.1]) by ppma21.wdc07v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 659E4n1u020473; Tue, 9 Jun 2026 14:14:24 GMT Received: from smtprelay04.fra02v.mail.ibm.com ([9.218.2.228]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4emxvjta6m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 09 Jun 2026 14:14:24 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay04.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 659EEKbI15991212 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 9 Jun 2026 14:14:20 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AA20120043; Tue, 9 Jun 2026 14:14:20 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 513C620040; Tue, 9 Jun 2026 14:14:20 +0000 (GMT) Received: from osiris (unknown [9.111.52.116]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 9 Jun 2026 14:14:20 +0000 (GMT) Date: Tue, 9 Jun 2026 16:14:19 +0200 From: Heiko Carstens To: Frederic Weisbecker Cc: Thomas Gleixner , Peter Zijlstra , Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: Re: [PATCH 0/4] s390: Idle time accounting improvements Message-ID: <20260609141419.9217H39-hca@linux.ibm.com> References: <20260513140129.4100822-1-hca@linux.ibm.com> <20260608075500.34400A04-hca@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=HppG3UTS c=1 sm=1 tr=0 ts=6a281fc1 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=8nJEP1OIZ-IA:10 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VwQbUJbxAAAA:8 a=1zixJbAZZp2u0mOtzawA:9 a=3ZKOabzyN94A:10 a=wPNLvfGTeEIA:10 X-Proofpoint-GUID: S0vH1Kq8B2eGjWmqxjrob3FEu7ZTiu0T X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjA5MDEzNCBTYWx0ZWRfXxvvCD7pyNf1b 6ng0GHNwvVChSgbpcw/7O8m/VHkFLC07tHbBhYMs6uuE6lY1Ab5GvNwziN+unbu4v9v6XTn3H2C rv/ZEaZCpz9zgwjCeIAtHx4wBuPedmanrFrNcOV6RL4004ySqoTVSTDNVzQ2BlgAiwyDh0u6ekE kfGj926i0MTGsBjcSZy64wvjPRQU4eWmupXMPXpPBYD7Y9R/E5Ggr1eMRF1ElthUK3ZqI3Y8iR7 1w60+wZf4GYJFLZwDHqDsysvWbocXptmYffBYbbcV/4YkCihm+R+NXQhOFHTK4XUssj/Dx9zQ1E xmvdZ5DRrl54l7OSMsC6m3rjSBakPBvIF+QL7Z5CrkUpbgeJmdpRHoyFLwjrESiZXtRC5BMRXHY ww/rhywmX0sFqPHN3cvCw30mHOoGyOjM3+YXDRisAN9WFDx94PKUwXkjx0CTYI8PWDRYeG4r1a0 TVc2NGPy9lgIB+ggetg== X-Proofpoint-ORIG-GUID: S0vH1Kq8B2eGjWmqxjrob3FEu7ZTiu0T 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_03,2026-06-09_02,2025-10-01_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-2606090134 On Tue, Jun 09, 2026 at 03:55:57PM +0200, Frederic Weisbecker wrote: > Le Mon, Jun 08, 2026 at 09:55:00AM +0200, Heiko Carstens a écrit : > > On Wed, May 13, 2026 at 04:01:25PM +0200, Heiko Carstens wrote: > > > This series is on top of Frederic Weisbecker's idle cpu time accounting > > > refactor series [1][2]. > > > > > > This is supposed to improve s390 idle time accounting, and brings it > > > back to the state it was before arch_cpu_idle_time() was removed from > > > s390 [3]. > > > > > > In result all cpu time accounting is done by the s390 architecture backend > > > again, instead of having a mix of architecure specific and common code > > > accounting (common code: idle, s390 architecture: everything else). > > > > Thomas, Peter, Frederic, any objections to this series? The third patch > > touches common code, so I'd like to get an ACK for that. > > > > If there is agreement, this could go either via tip tree's timers/nohz branch > > (series applies cleanly), or via s390, after the nohz branch has been merged > > upstream. > > Looks all good to me, thanks! > > Acked-by: Frederic Weisbecker Thank you! > I guess ideally it should go via s390. Any chance you can push this to this > merge window right after tip:timers/nohz is merged? Yes, sure.