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Thu, 30 Jul 2026 05:29:08 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 30 Jul 2026 05:29:08 +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 v3 4/4] s390/cio: Remove cond_resched() calls Date: Thu, 30 Jul 2026 07:29:07 +0200 Message-ID: <20260730052907.2607026-5-hca@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260730052907.2607026-1-hca@linux.ibm.com> References: <20260730052907.2607026-1-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-ORIG-GUID: 8B7U-78mlGFTjwtsAt3a0tWbBIPUeUMA X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMwMDAzMyBTYWx0ZWRfX+sAlQljUvAAw 4I1/75GA5ZgrmHxSjzkZf5twRDRsDY/bN/W0rg0ft1MVcrtSxAWdmI8YR3Yt5aQ7d+xijqcJSCD 66BfrsQeiz9wDsaLDnY55qTJ2PPB1MrcCiBxu9hf6KxQ6Bc3avvut2i6RA0m1uH7R/+RmF90dM6 AKCeLXtX2bJ+cJRKNeGBzyUjjLGGJKzUW2iHvJBvZM/Hb6XnEYd8Gy4Zf9f9StpOjj+D1umnBN7 UeXk8WUaY0aTiZOZMgO3GCoUxljIaKOGAjaHv6HBEALpJ/LfpfHG9Q5RXI+Xnu4CdrCsMkZFG9M sX9XgTRp+9f/WbVWoRHMzQYJSEdUn0soelOZe6F0NaX+CJBRU5TTO1ZP2FybiHlOYjtlX+fvtou 2EBvtmr9uL9ONi6+HIcyeaVgqrp3A6ePmDCYnSmL9MGDjp59hra+hoMNl6jB5AJLyhCNO90Dz4R 7csFJHEifkTthFNlkqA== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMwMDAzMyBTYWx0ZWRfXwcaopS+HXSiC Z5y07MsAwuQnyCbPK++Qe57I6t+uxvLhymmc1wm7Mx9HBa5ds4GDcSfGIvwV0ApYhg5Lv7VHBY4 iBREfg374ihP8IKHp2dZdt3cp/CXvsk= X-Authority-Analysis: v=2.4 cv=AZeB2XXG c=1 sm=1 tr=0 ts=6a6ae12a cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=yDFob_ultygKJmZAZNUA:9 a=O8hF6Hzn-FEA:10 X-Proofpoint-GUID: 8B7U-78mlGFTjwtsAt3a0tWbBIPUeUMA 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=2026-07-30_01,2026-07-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 phishscore=0 adultscore=0 impostorscore=0 clxscore=1015 malwarescore=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607300033 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