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=-14.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 B355CC433FE for ; Wed, 9 Dec 2020 20:38:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8522623BAC for ; Wed, 9 Dec 2020 20:38:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728091AbgLIUiO (ORCPT ); Wed, 9 Dec 2020 15:38:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37030 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725816AbgLIUiN (ORCPT ); Wed, 9 Dec 2020 15:38:13 -0500 Received: from mail-lj1-x242.google.com (mail-lj1-x242.google.com [IPv6:2a00:1450:4864:20::242]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 015B6C0613CF; Wed, 9 Dec 2020 12:37:33 -0800 (PST) Received: by mail-lj1-x242.google.com with SMTP id a1so4046923ljq.3; Wed, 09 Dec 2020 12:37:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=Ps0HzLtO3/TtXEsM+0xqsO+WH9Hy/vF5yoyOtvGwKBo=; b=C/NJfjCLOVMQTNTll13YnI2VM861tvCvtdfWqsFnEAgKqf/2C8R5ru2XqXL+zXqEtv MhVEo3ThrC06oREomIrSUlWFiDqrvm63wdTwlJUqIt1L3jkgByDdcTN+sUvpGt8zgiKS YraPECtNAb3ib3jli0j26aHQjOdKKQeaIioNES8mokBC+h+C7eIoVQ434Fgvgb86ifqf pP/tKqsxlrMNcFL48s9Jvgc5GKv2xPFVwCsW36ojsAKE/hbxwuH5R48n/LXFa316p/gi qNNUUmzFdwqXojDuim86DnxU2gdS7ERQu3TD1rSLeO/m5uTd4PDLaTo/F2LTiAm38s+Z IbQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=Ps0HzLtO3/TtXEsM+0xqsO+WH9Hy/vF5yoyOtvGwKBo=; b=IaKBa14vfNYIkLV3BVybXbbjP/YiV4mtWt1iwqM/bg0fUREcqkf+/lGnJw/OS+OvRj +C26eppbFgLIhOv1HCMcvLoSRyPlw+Ji6xLS4df7j/D4qqdclxvmmpv3mF3AhMRnVp1S NQVnPclTkK27N1nHJYSoCdOFqszpbuQOQQUMzTtHd4QlKgg/Gr5CeLc9COnNTZntZhBR sTXB2BQ7OdCGEpAuEzkHPHxDx5sSlcdwgjWbB/Ia4GH3guwZylRXFdKntilQdvpMUiwn 1O36qSTy7KjYJikaj3jBXcv9nT21fVeKzZYeecDHAvj+y3wA2DPKDz49wrRe0TzL+9zf ZB5A== X-Gm-Message-State: AOAM532fDd1I5yVKBfy3qIceJdq9aCezAqLn9YUbMR3d6TjqlP+K6tmn L80dXw4AoembXFpHh6MmvhA= X-Google-Smtp-Source: ABdhPJw3x0eNA6Rcna39d8jOJX4JMaSXTUwe6m1UNhsiWRa2C0VxoXuTcznqcZzTqXDDlC2ZiJdQTA== X-Received: by 2002:a2e:81cc:: with SMTP id s12mr1767394ljg.39.1607546251467; Wed, 09 Dec 2020 12:37:31 -0800 (PST) Received: from pc638.lan (h5ef52e3d.seluork.dyn.perspektivbredband.net. [94.245.46.61]) by smtp.gmail.com with ESMTPSA id m21sm362816ljb.108.2020.12.09.12.37.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Dec 2020 12:37:30 -0800 (PST) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Wed, 9 Dec 2020 21:37:28 +0100 To: Michael Ellerman , Daniel Axtens Cc: LKML , RCU , "Paul E . McKenney" , Michael Ellerman , Andrew Morton , Daniel Axtens , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Peter Zijlstra , Michal Hocko , Thomas Gleixner , "Theodore Y . Ts'o" , Sebastian Andrzej Siewior , Oleksiy Avramchenko Subject: Re: [PATCH 1/2] rcu-tasks: move RCU-tasks initialization out of core_initcall() Message-ID: <20201209203728.GA5972@pc638.lan> References: <20201209202732.5896-1-urezki@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201209202732.5896-1-urezki@gmail.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Initialize the RCU-tasks earlier, before *_initcall() callbacks are > invoked. Do it after the workqueue subsytem is up and running. That > gives us a possibility to make use of synchronize_rcu_tasks*() wait > API in early_initcall() callbacks. > > Fixes: 36dadef23fcc ("kprobes: Init kprobes in early_initcall") > Signed-off-by: Uladzislau Rezki (Sony) > --- > include/linux/rcupdate.h | 6 ++++++ > init/main.c | 1 + > kernel/rcu/tasks.h | 26 ++++++++++++++++++++++---- > 3 files changed, 29 insertions(+), 4 deletions(-) > I still don't have a powerPC hw so far, even though i have sent a request to the osuosl.org. It would be appreciated if Michael or Daniel could run and verify it. Thank you in advance! -- Vlad Rezki