From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D393EC83F22 for ; Wed, 16 Jul 2025 10:11:30 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4bhsKF11nCz30VZ; Wed, 16 Jul 2025 20:11:29 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=148.163.156.1 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1752660689; cv=none; b=U4SjJ8FEBjizMrvYhZmSQJ4aa5P25fJQwR6RdTCOW4dJmjolFvXTJpuhzlvLyVSWGMHj+ys84bCBIAV8b8wJYtZbswgvmU+rE5uiU4zVye+QBYJWQfjkgIAY6fMz+oZl1/8GmfkoXcyNgDj5wdtvkU7uH/EsmSVfUFOCBDlEGheBNM9YOn8FBhegVK8Vof8Zl0+kjK7/67AynBCkeogMXtOI7rtj69ze+86frOp63c71NM9PpU0GeTlq2o72bII+C5l2DHlFOjW6aHGEgGK/MofqhXUR1poQoZgC/GK30j60c2RUr5InBQfAAmyn/eeAjxdKZVEqC8QPuz14UnKhjA== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1752660689; c=relaxed/relaxed; bh=Jcbuww0Va+k2vq1pry8cOViN1poGtKzkSjZo/HirnJA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=H9P+LIjOEE6DUeYkQ3ZUsvldzkddmU3RaTFXJWVhjrRH1Z+qzun3JXOvVpIL1yBmFFyiiSMx/VmcfDDhV7njP/RteKXAxaNqGvJ9yucmBH3iQOzbKu9AHBeX4hlLjx9fKHDowNL55L7VapAu9ABIrucsJL5U6tC8qW7YeJ+rNrvq5DPly8NDoLB794h71A5Twr890Mznj5ukYpQDxmla+b6u1KyzFI1D9pGyvxiK+dVEJanjVlDqLwerlTOaejx8ITu4C13EL81iSy7iZtffN2TqGTx5mLt40tUY1AlwyQz7cReXS/V9jJNDq4dkHX9w02H7BtGQy5XO3V5DX/CkNQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=lQpTNV0L; dkim-atps=neutral; spf=pass (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=sshegde@linux.ibm.com; receiver=lists.ozlabs.org) smtp.mailfrom=linux.ibm.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=lQpTNV0L; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=sshegde@linux.ibm.com; receiver=lists.ozlabs.org) 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 lists.ozlabs.org (Postfix) with ESMTPS id 4bhsKD07Jhz3069 for ; Wed, 16 Jul 2025 20:11:27 +1000 (AEST) Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 56G7YUhg022357; Wed, 16 Jul 2025 10:10:37 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:message-id:mime-version :subject:to; s=pp1; bh=Jcbuww0Va+k2vq1pry8cOViN1poGtKzkSjZo/Hirn JA=; b=lQpTNV0Lw4FMtcf1W58ihMsnSYzgdQk46cfxQRx5vO9tcm70Z3OoL26YM BD5Oyj1YppQpFxH39uOJn5Y2GLQ2f6+Fqx4SxxP8edq4Bfxhr5ME22ymd5P6RcvZ AoDZDJbRzFNhXxaCSHPpEE3I5fQ/t8ykh5ym0x1nIir9SPYJZOeArSnDUp4LsIN+ wAD0p0xOMYMwCuU4uW4w8uBUY4cp2z4B7csFFecScOxKv07HKYNrbQiEYqSpVvwM Zz5HYW5KgQgYV8boxfEPpFqXsx9oPLaR2KpbHtq1k/2vyiU/amlrRa2RXseVuDbk hNIwJWGcWWf7yljOlr5S+faQke8Hw== Received: from ppma23.wdc07v.mail.ibm.com (5d.69.3da9.ip4.static.sl-reverse.com [169.61.105.93]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 47vdfmqatw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 16 Jul 2025 10:10:37 +0000 (GMT) Received: from pps.filterd (ppma23.wdc07v.mail.ibm.com [127.0.0.1]) by ppma23.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 56G7J2cR008909; Wed, 16 Jul 2025 10:10:36 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 47v3hmpsb0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 16 Jul 2025 10:10:35 +0000 Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 56GAAV1E36372806 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 16 Jul 2025 10:10:31 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 66D702047D; Wed, 16 Jul 2025 09:48:14 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 227FE2047B; Wed, 16 Jul 2025 09:48:12 +0000 (GMT) Received: from li-7bb28a4c-2dab-11b2-a85c-887b5c60d769.ibm.com.com (unknown [9.124.218.143]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 16 Jul 2025 09:48:11 +0000 (GMT) From: Shrikanth Hegde To: mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de, maddy@linux.ibm.com, will@kernel.org Cc: sshegde@linux.ibm.com, mark.rutland@arm.com, bigeasy@linutronix.de, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 0/1] powerpc, arm64: move preempt dynamic key into kernel/sched Date: Wed, 16 Jul 2025 15:17:44 +0530 Message-ID: <20250716094745.2232041-1-sshegde@linux.ibm.com> X-Mailer: git-send-email 2.43.5 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 4ZzsJPwZ79ZXwGaz41k8LXOnSjIdcWG5 X-Authority-Analysis: v=2.4 cv=JOI7s9Kb c=1 sm=1 tr=0 ts=68777a9d cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=Wb1JkmetP80A:10 a=cMfPdojDCaELe1LC6y0A:9 X-Proofpoint-ORIG-GUID: 4ZzsJPwZ79ZXwGaz41k8LXOnSjIdcWG5 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzE2MDA4NyBTYWx0ZWRfXxseXy56oR2xP Ro5dB+r0rxy6hYoJw5vnymvDbhknESe6PeXTUWvp5DHBC2N563erNLiWIYixLA3LaehqZt3/+ED hAQ7hEZ4UX468X9HAWGmWPzdWLM4gkfUL6mRJIAPAZUkbo2TKx6dpl76vcHgvlTUWEiRZBq35CL GvHm/f42MeaiRtNfRzXpOepIZQLAzrfbZNQgdttGbNlp4jn+mrVRA9tSL1XlW2zdvYbS7HDPuj4 4pBBHoab1RGdBYvz4V9qEQ/uDUzsOdvSfnz67VcMBEP/j4q9H38tZqR9KddjrzVERTSep1QvAC+ TbTaq3+AkUeRT5zgls5HKb2XA9yXqu4UAY+devH9hq85brqcPoyYX7wwl7E2Qv5HSVvIR9K1DqP OatUde+g3/sEVKxI0FCcoDIuJT0rTp3/ZAyN9ytpthvPrVCDvqRaJAW5rZ5nvO4i5xRHNdES X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-16_01,2025-07-15_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 phishscore=0 mlxlogscore=568 malwarescore=0 clxscore=1015 bulkscore=0 priorityscore=1501 mlxscore=0 spamscore=0 adultscore=0 impostorscore=0 suspectscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507160087 Current usage of preempt dynamic key is not specific to architecture and can be moved into sched/core instead. Most of the code around it looks similar. (same code for powerpc, arm64). Since preemption is more associated with scheduler rather than entry/exit, it is probably better it should be moved. This is tested on powerVM PREEMPT_DYNAMIC=y/n and on arm64 by Mark v1->v2: - Rebase to 6.16-rc6 - Collected the tags Ingo, Peter, Can this go via tip sched tree? Both arm64, powerpc have acked the changes and been tested. Shrikanth Hegde (1): sched: preempt: Move dynamic keys into kernel/sched arch/arm64/include/asm/preempt.h | 1 - arch/arm64/kernel/entry-common.c | 8 -------- arch/powerpc/include/asm/preempt.h | 16 ---------------- arch/powerpc/kernel/interrupt.c | 4 ---- include/linux/irq-entry-common.h | 1 - include/linux/sched.h | 8 ++++++++ kernel/entry/common.c | 1 - kernel/sched/core.c | 4 ++++ 8 files changed, 12 insertions(+), 31 deletions(-) delete mode 100644 arch/powerpc/include/asm/preempt.h -- 2.43.0