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Mon, 27 Jul 2026 16:24:30 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 27 Jul 2026 16:24:30 +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 Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/4] s390: Remove or replace cond_resched() calls Date: Mon, 27 Jul 2026 18:24:26 +0200 Message-ID: <20260727162430.1599396-1-hca@linux.ibm.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@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: R4ZDEcc9ylWlximUj_UVR3ERCNGGmq2I X-Proofpoint-Spam-Info: AW1haW4tMjYwNzI3MDE1MSBTYWx0ZWRfXxCiMaw+djh58 Lwo3wNh/EroqRabOcTXCyRRQthONP00gSJceiHZwX5sDVxknBXfjvBbblxJySuRkTeyNp57xBwf FkrfZ8FNaRq/fwwDPP0lfevGrGdt6RQ= X-Authority-Analysis: v=2.4 cv=E/z9Y6dl c=1 sm=1 tr=0 ts=6a678b9f cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=Fs_qYlmMC0Zql47DM_AA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzI3MDE1MSBTYWx0ZWRfX2GtlkASbyozm xRPZk+W9+OxdfksmcWNl5LGPn9RO3jxz9+qhkzBVBhBaUxhBt5uyvJdFIwYYC9ZYXQjmUTkPYLv 4tKwrNcNiOTRIq8VWvLOaS6FwAe0MYBib0f7qVIe7u+OpnRx4mSxdC6m4yrLSkCr2b3stTI5uf1 qSgSyxn8XMQ+BsTbfHtNM3mtI7fFWYed9WCjC/vWRue5B4yvj/zMG8bGFngmKcZrZztnzAGH3aq nQR1NjKTnwM2xYF1wYIXyBhQoPGNXDtvUq9IzsXsgYLl3f9iZzQa8Zm+7vIV6jJzvMA5KJGcBFI 2jKD8nhA8zpWrhP9ANn/0Z4OIVSuFePf5/zs62NcmrJu607lV3Mq1UqllpoUVVXCpIdwVd2UZUj ETu7wPX5flIRtJjQXP3ogyXnEJecSvizZzG203Llkm/lEaLdri8p1+seAeCJiGx1Sod5d3OKuN2 HuulS1aAAjRHk7pqrwQ== X-Proofpoint-GUID: R4ZDEcc9ylWlximUj_UVR3ERCNGGmq2I 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=2026-07-27_04,2026-07-24_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 priorityscore=1501 spamscore=0 clxscore=1015 phishscore=0 lowpriorityscore=0 bulkscore=0 malwarescore=0 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607270151 Since [1] it is only possible to select the PREEMPT or PREEMPT_LAZY preemption models for s390. This has caused some minor problems, but everything has been addressed. Given that for both preemption models cond_resched() is a no-op remove or replace it everywhere. [1] commit 7dadeaa6e851 ("sched: Further restrict the preemption modes") Heiko Carstens (4): s390/crypto: Replace cond_resched() with schedule() KVM: s390: Remove cond_resched() calls s390: Remove cond_resched() calls s390/cio: Remove cond_resched() calls arch/s390/crypto/paes_s390.c | 8 ++++---- arch/s390/crypto/phmac_s390.c | 4 ++-- arch/s390/include/asm/uv.h | 1 - arch/s390/kernel/perf_cpum_cf.c | 1 - arch/s390/kvm/gaccess.c | 8 ++------ arch/s390/kvm/gmap.c | 4 ---- arch/s390/kvm/kvm-s390.c | 1 - arch/s390/kvm/pv.c | 1 - arch/s390/kvm/vsie.c | 1 - arch/s390/mm/cmm.c | 2 -- arch/s390/mm/gmap_helpers.c | 1 - arch/s390/mm/pageattr.c | 5 ----- arch/s390/mm/pgalloc.c | 1 - arch/s390/pci/pci.c | 4 +--- drivers/s390/cio/css.c | 8 -------- 15 files changed, 9 insertions(+), 41 deletions(-) -- 2.53.0