From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (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 A815F46A605; Tue, 28 Jul 2026 15:04:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785251071; cv=none; b=ryn/v9rmm2kgz5Ay7lu+jXHJfpaOjPv7X+9wWJTVW9QCS0wtHyvnfUBkX88zGIuxgoPAEsnvSiyakCGSSLyYO8EBRta66Meru05YBENG3xoz0ADPXR985l8620dSUhhVWojPIDm9g68mvuM7L8DDCG2KezmcNo/TvH4YX4Ujq5A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785251071; c=relaxed/simple; bh=+48OdW2c+eMcu7qH9gjWRZnUcX90oCow45HZ5Uma/8E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eW8WYpbgi56zPDTGLIktODenBJi6XmBHXH8R8ejtIssuhLL56YiCfYhe6PMjcqVlv59bjrmd3grVnxIhVvg+NkPVMu0L5IwGcz+LSjAIt3hbYyfeNVEsiYdOwBgRsDtbvsKz4BKHohZDC+cWddGX3V2JtnL94y1uXNCrP1oukcI= 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=DweI5B7K; arc=none smtp.client-ip=148.163.158.5 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="DweI5B7K" Received: from pps.filterd (m0353725.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 66SElfsM1381160; Tue, 28 Jul 2026 15:04:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=GsS/PcaiZHkSIqKAt n0OpAFt9rSX4OlSrapO6SOezxA=; b=DweI5B7KBfAda9Int4XzTEv/UT+RcbumM TDzm7geq3f/2oQxZLmm6M7UZHmE9ZU+ypxAA2UiKYlkBOwKKHcsow8waK3kh/8nW USegVdJNfLXz6T6T7ac2/IQDbdJiumQ5nrfRuiPuewyU9ehUf3R0cX0te2R9pini Wb9DObIOD4/3beEm7XIY06/OTO/KN9yJgM03hWyLsYekpFXiv2x1fD55G2ggMpin JVoQWJRVJktAYB99IBTgZx7TT8lI1b5/O8WpqIvdTCm9ZegckGo4Qr159ynohuun 5NBQVUhnfmg2bmICWUoBcXJwDY1SabfjGH0Pjrh9e6FBA0LJ0HfCg== 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 4fmv0nn90w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 28 Jul 2026 15:04:18 +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 66SEuFlE029088; Tue, 28 Jul 2026 15:04:17 GMT Received: from smtprelay07.fra02v.mail.ibm.com ([9.218.2.229]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4fn8fk2dg5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 28 Jul 2026 15:04:17 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 66SF4DBw51708346 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 Jul 2026 15:04:13 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C140820040; Tue, 28 Jul 2026 15:04:13 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 89EC320043; Tue, 28 Jul 2026 15:04:13 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 28 Jul 2026 15:04:13 +0000 (GMT) From: Heiko Carstens To: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , Harald Freudenberger , Holger Dengler , Vineeth Vijayan , Peter Oberparleiter , Janosch Frank , Claudio Imbrenda , David Hildenbrand , Peter Zijlstra , Herbert Xu Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org Subject: [PATCH v2 4/4] s390/cio: Remove cond_resched() calls Date: Tue, 28 Jul 2026 17:04:12 +0200 Message-ID: <20260728150412.3893933-5-hca@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260728150412.3893933-1-hca@linux.ibm.com> References: <20260728150412.3893933-1-hca@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzI4MDEzMiBTYWx0ZWRfX4KenkURZ/Hhh ndlfXOoCvo4vJM4XXYyy92Kx/OQtERI1SiZjzI4lkF2vymO/F9RpXVOivhbMVsoyj90hkpnNRxo pSbqmyi0YNHHAh8/NCMXr0W6XcdpDbA= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzI4MDEzMiBTYWx0ZWRfX0w9Y0UITFZxJ k+Yp0ntAet1LE5C8NwP1VvhJFqC/QfGVOgeANZ0y+IQ6HvbV4j/YQz5h6Xx6fPP9ugEZYla4TfQ U9Nq+Oz2yRaAtKn6Oh8sL4+Rvh/m088eXkUPEQFT02zv57KMd8LMBNma3ss83PtaGrj/XquD+Ey sfWUCHdVrkJnNatYXSlKB7T/NLCH2jBoTfmkUQuS9BaPFzG5hoQ9pbE00SYcLwu3EzQAXz+psQk YSEvD2ihcFsKnfuyoIeAOvHRsI2krg5/v3gAa3MEt+brAcx+O2vFgNqHjHP7P9xSXqZa40+FSRX kF0ez0Iggxz/OaIAzmXq4EJgt5Po/RO/yra74qTvjzIf8HpLQhj9MxnrLCxFPJD8pBDqmrKNQlh 3o3Jda7IUReVaSffVJcyjZ7SdlaSH0IIDWkGF9l8Rt/qroUISB4TAxSkEydoG7T0GshpNGjHW1t euIeWsjUwtt7y5vitiw== X-Authority-Analysis: v=2.4 cv=b5WCJNGx c=1 sm=1 tr=0 ts=6a68c4f2 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=yDFob_ultygKJmZAZNUA:9 a=O8hF6Hzn-FEA:10 X-Proofpoint-GUID: AGWpykg8PSNvjfGKhiPVKLTw7N8DnrSD X-Proofpoint-ORIG-GUID: AGWpykg8PSNvjfGKhiPVKLTw7N8DnrSD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-28_04,2026-07-28_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 adultscore=0 malwarescore=0 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607280132 Since [1] cond_resched() is a no-op on s390. Remove all calls. [1] commit 7dadeaa6e851 ("sched: Further restrict the preemption modes") Reviewed-by: Peter Oberparleiter Signed-off-by: Heiko Carstens --- drivers/s390/cio/css.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index e5a0ec6b4e3e..54b8b8639694 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -618,11 +618,6 @@ static int slow_eval_known_fn(struct subchannel *sch, void *data) rc = css_evaluate_known_subchannel(sch, 1); if (rc == -EAGAIN) css_schedule_eval(sch->schid); - /* - * The loop might take long time for platforms with lots of - * known devices. Allow scheduling here. - */ - cond_resched(); } return 0; } @@ -654,9 +649,6 @@ static int slow_eval_unknown_fn(struct subchannel_id schid, void *data) default: rc = 0; } - /* Allow scheduling here since the containing loop might - * take a while. */ - cond_resched(); } return rc; } -- 2.53.0