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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 858E2C2D0BE for ; Tue, 10 Dec 2019 04:26:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5BCD820652 for ; Tue, 10 Dec 2019 04:26:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575951969; bh=qY6D2p7W6BUJux1yJwdutyn8NAYZTKUx85rOEsvP0c4=; h=Date:From:To:Cc:Subject:Reply-To:List-ID:From; b=Is1BqVlkJrzYWKFtk7cbfJq5st7yWq0I+sb21nomV1JSbgiK9kdWkRIIWeMk9cYGj SWAfizIb69ISgf47Yw6onJ+zn45tncEgaesVvRRHyJptOlJ/TMz8avP1SXaGXSQ4RV IzPXumQyQgQAutExyE7mBKBD7ZzMA7dKaswNx6FU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726883AbfLJE0I (ORCPT ); Mon, 9 Dec 2019 23:26:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:48200 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726810AbfLJE0H (ORCPT ); Mon, 9 Dec 2019 23:26:07 -0500 Received: from paulmck-ThinkPad-P72.home (199-192-87-166.static.wiline.com [199.192.87.166]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id F0F5520637; Tue, 10 Dec 2019 04:26:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575951967; bh=qY6D2p7W6BUJux1yJwdutyn8NAYZTKUx85rOEsvP0c4=; h=Date:From:To:Cc:Subject:Reply-To:From; b=UQS/C6glJ4jZf9hIwxEEApLS85Ptvptlj5n/Lwnom2843dpWNEnfWVPwVm/sQO6jK kIKWSjDQILJSpzEZE/E7rmF5t4ehz9hEcHSBX+cbib48o0EP4Yb968NeIMppbmUV5Y 0Seq/o1zIzGwGES1pGa9cGHgK9ivfksEirS+1mME= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 9ADA93522768; Mon, 9 Dec 2019 20:26:06 -0800 (PST) Date: Mon, 9 Dec 2019 20:26:06 -0800 From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, 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 0/11] Preemptible-RCU updates for v5.6 Message-ID: <20191210042606.GA3624@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains preemptible-RCU updates for v5.6: 1. Fix dump_tree hierarchy print always active, courtesy of Stefan Reiter. 2. Avoid data-race in rcu_gp_fqs_check_wake(), courtesy of Eric Dumazet. 3. Use lockdep rather than comment to enforce lock held. 4. Make PREEMPT_RCU be a modifier to TREE_RCU, courtesy of Lai Jiangshan. 5. Use CONFIG_PREEMPTION where appropriate, courtesy of Sebastian Andrzej Siewior. 6. Rename some instances of CONFIG_PREEMPTION to CONFIG_PREEMPT_RCU, courtesy of Lai Jiangshan. 7. Clear .exp_hint only when deferred quiescent state has been reported, courtesy of Lai Jiangshan. 8. Clear ->rcu_read_unlock_special only once, courtesy of Lai Jiangshan. 9. Use READ_ONCE() for ->expmask in rcu_read_unlock_special(). 10. Provide wrappers for uses of ->rcu_read_lock_nesting, courtesy of Lai Jiangshan. 11. Avoid tick_dep_set_cpu() misordering. Thanx, Paul ------------------------------------------------------------------------ include/linux/rcupdate.h | 8 +-- include/trace/events/rcu.h | 4 - kernel/rcu/Kconfig | 17 +++--- kernel/rcu/Makefile | 1 kernel/rcu/rcu.h | 2 kernel/rcu/rcutorture.c | 2 kernel/rcu/srcutiny.c | 2 kernel/rcu/tree.c | 20 ++++--- kernel/rcu/tree_exp.h | 6 +- kernel/rcu/tree_plugin.h | 118 +++++++++++++++++++++++++-------------------- kernel/rcu/tree_stall.h | 6 +- kernel/rcu/update.c | 2 kernel/sysctl.c | 2 13 files changed, 105 insertions(+), 85 deletions(-)