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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92907C6FA82 for ; Thu, 15 Sep 2022 00:14:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229999AbiIOAOo (ORCPT ); Wed, 14 Sep 2022 20:14:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41170 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229732AbiIOAOg (ORCPT ); Wed, 14 Sep 2022 20:14:36 -0400 Received: from mail-qk1-x731.google.com (mail-qk1-x731.google.com [IPv6:2607:f8b0:4864:20::731]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE2C92718 for ; Wed, 14 Sep 2022 17:14:33 -0700 (PDT) Received: by mail-qk1-x731.google.com with SMTP id d17so11372190qko.13 for ; Wed, 14 Sep 2022 17:14:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date; bh=n75DckJoTNxwHGQy+cAzlCqQ+/GK+bz2i3ZQXyrbV3o=; b=qApXbnIKeQh3JuT+G6S4AN/JA7pDhe1ZN1/ProWVTLC/Rij/S4yNyrTcBcqxb15gT8 8YiocZCvL+QltvhXJ9euL+HrQz+fpU5dQxPkkl7hRmteqRE6fzC5vAYZumEiU0vwZIq2 Cld5jckzCNCBc3dfflc8oaJA2UN3rZ8wDZXDg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date; bh=n75DckJoTNxwHGQy+cAzlCqQ+/GK+bz2i3ZQXyrbV3o=; b=LqLpdVLowAA1adfPR5ZbwZTYgPYtobTc0LBpbRFztwReU9da4Gn38ORrltohyTpsjK IoDdAYFSUoHkMuC3DyZV7z38wKP0+x9k0DcPWMjyShcdQAhSaAUUVWgnLRL3C5ZDjoIb /EaevkbQHtkGHw5fN8KlEBQmw2Q3PzUlBkLtJAOAPlF3SwYf3Rin8FxmyYTeWlQXDWNc HEC4vxTfbfkp7W9gqL60kyaeV6FeIHr+Y4+Ptz02YMETn7QT2pPSoVvgqgrbIXMX4iYN REtOhYgrnCMImho62gi0kn7huULcpCKQERBcV5t6xRYLwwagee9jUsj6PEJnDRojeqsc D8Dg== X-Gm-Message-State: ACgBeo3fqaOOoCt2eguZETZII/S+k1lo1byaI3i2niGvGTHb4IQy0N2C 5EaCmI4GZsLRRVWqBdvWVyL0xG3zDanazSOA X-Google-Smtp-Source: AA6agR5EImjOMvPGoTYlDOogzQ3RZqT0E/3ynshzHY9J48USbOtAX8h2DmPD3ZjuAlj49Xt+xtD6eg== X-Received: by 2002:a05:620a:2887:b0:6b6:52a5:d287 with SMTP id j7-20020a05620a288700b006b652a5d287mr28551826qkp.442.1663200872662; Wed, 14 Sep 2022 17:14:32 -0700 (PDT) Received: from joelboxx.c.googlers.com.com (228.221.150.34.bc.googleusercontent.com. [34.150.221.228]) by smtp.gmail.com with ESMTPSA id do11-20020a05620a2b0b00b006bbb07ebd83sm2872422qkb.108.2022.09.14.17.14.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Sep 2022 17:14:32 -0700 (PDT) From: "Joel Fernandes (Google)" To: linux-kernel@vger.kernel.org Cc: "Joel Fernandes (Google)" , Frederic Weisbecker , Josh Triplett , Lai Jiangshan , Mathieu Desnoyers , Neeraj Upadhyay , "Paul E. McKenney" , rcu@vger.kernel.org, Steven Rostedt Subject: [PATCH rcu/next 0/3] Preparatory patches borrowed from lazy rcu v5 Date: Thu, 15 Sep 2022 00:14:16 +0000 Message-Id: <20220915001419.55617-1-joel@joelfernandes.org> X-Mailer: git-send-email 2.37.2.789.g6183377224-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Just sending a few patches before lazy rcu v6 can come out. That can come out after more testing to check feasibility of ideas discussed at LPC. I will try to get rcutop pushed as well before v6, but in the meanwhile I don't see much reason to block these few patches for 6.1. These apply to Paul's rcu/next branch. What do you think? Joel Fernandes (Google) (3): rcu/tree: Use READ_ONCE() for lockless read of rnp->qsmask rcu: Move trace_rcu_callback() before bypassing rcu: Fix late wakeup when flush of bypass cblist happens kernel/rcu/tree.c | 12 +++++++----- kernel/rcu/tree_nocb.h | 10 ++++++++-- 2 files changed, 15 insertions(+), 7 deletions(-) -- 2.37.2.789.g6183377224-goog