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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 88254C433F5 for ; Wed, 29 Aug 2018 22:53:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 29F3E20644 for ; Wed, 29 Aug 2018 22:53:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 29F3E20644 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.vnet.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727469AbeH3Cwz (ORCPT ); Wed, 29 Aug 2018 22:52:55 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:36028 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727316AbeH3Cwz (ORCPT ); Wed, 29 Aug 2018 22:52:55 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w7TMnDnT124485 for ; Wed, 29 Aug 2018 18:53:46 -0400 Received: from e11.ny.us.ibm.com (e11.ny.us.ibm.com [129.33.205.201]) by mx0b-001b2d01.pphosted.com with ESMTP id 2m615dfkqx-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 29 Aug 2018 18:53:46 -0400 Received: from localhost by e11.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 29 Aug 2018 18:53:45 -0400 Received: from b01cxnp22034.gho.pok.ibm.com (9.57.198.24) by e11.ny.us.ibm.com (146.89.104.198) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 29 Aug 2018 18:53:41 -0400 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w7TMreDW3604884 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 29 Aug 2018 22:53:40 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4719EB206A; Wed, 29 Aug 2018 18:52:36 -0400 (EDT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2610CB2067; Wed, 29 Aug 2018 18:52:36 -0400 (EDT) Received: from paulmck-ThinkPad-W541 (unknown [9.70.82.159]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Wed, 29 Aug 2018 18:52:36 -0400 (EDT) Received: by paulmck-ThinkPad-W541 (Postfix, from userid 1000) id 9BCFB16C91B7; Wed, 29 Aug 2018 15:53:40 -0700 (PDT) Date: Wed, 29 Aug 2018 15:53:40 -0700 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org Subject: [PATCH tip/core/rcu 0/24] Additional RCU-consolidation cleanups for v4.20/v5.0 Reply-To: paulmck@linux.vnet.ibm.com MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 18082922-2213-0000-0000-000002E509D4 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009636; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01080749; UDB=6.00557500; IPR=6.00860734; MB=3.00023002; MTD=3.00000008; XFM=3.00000015; UTC=2018-08-29 22:53:44 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18082922-2214-0000-0000-00005B6033AC Message-Id: <20180829225340.GA7019@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-08-29_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=974 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1808290222 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains yet more cleanups for RCU flavor consolidation: 1. Inline the now-trivial increment_cpu_stall_ticks() into its sole caller. 2. Pull the rcu_gp_kthread() function's force-quiescent-state loop into a separate function 3. Consolidate RCU-bh update-side function definitions, putting them all in one place at the end of rcupdate.h. 4. Consolidate RCU-sched update-side function definitions, putting them all in one place at the end of rcupdate.h. 5. Add RCU-bh and RCU-sched support for extended readers, so that rcutorture will mix and match all RCU read-side primitives. 6. Stop testing RCU-bh and RCU-sched. 7-8. Remove the "rcu_bh" and "sched" torture types. 9. Remove now-unused rcutorture APIs. 10-21. Clean up flavor-related definitions and comments. 22. Remove !PREEMPT code from rcu_note_voluntary_context_switch(), since it now has meaning only in PREEMPT kernels. 23. Define rcu_all_qs() only in !PREEMPT builds, since that is now the only place it is used. 24. Inline _rcu_barrier() into its sole remaining caller. Thanx, Paul ------------------------------------------------------------------------ Documentation/admin-guide/kernel-parameters.txt | 6 include/linux/rculist.h | 32 - include/linux/rcupdate.h | 100 ++- include/linux/rcupdate_wait.h | 14 include/linux/rcutiny.h | 47 - include/linux/rcutree.h | 28 include/trace/events/rcu.h | 20 kernel/rcu/Kconfig | 20 kernel/rcu/rcu.h | 28 kernel/rcu/rcuperf.c | 65 -- kernel/rcu/rcutorture.c | 125 --- kernel/rcu/srcutree.c | 2 kernel/rcu/tiny.c | 10 kernel/rcu/tree.c | 414 +++---------- kernel/rcu/tree.h | 5 kernel/rcu/tree_exp.h | 22 kernel/rcu/tree_plugin.h | 83 +- kernel/rcu/update.c | 58 - tools/testing/selftests/rcutorture/configs/rcu/TINY02.boot | 2 tools/testing/selftests/rcutorture/configs/rcu/TREE01.boot | 2 tools/testing/selftests/rcutorture/configs/rcu/TREE04.boot | 2 tools/testing/selftests/rcutorture/configs/rcu/TREE05.boot | 2 tools/testing/selftests/rcutorture/configs/rcu/TREE06.boot | 2 tools/testing/selftests/rcutorture/configs/rcu/TREE08.boot | 2 24 files changed, 366 insertions(+), 725 deletions(-)