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=-4.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS 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 9B59EC43381 for ; Mon, 4 Mar 2019 03:06:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 51A6A20823 for ; Mon, 4 Mar 2019 03:06:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lca.pw header.i=@lca.pw header.b="SF6Z79xJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726190AbfCDDGb (ORCPT ); Sun, 3 Mar 2019 22:06:31 -0500 Received: from mail-qk1-f170.google.com ([209.85.222.170]:39871 "EHLO mail-qk1-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726063AbfCDDGb (ORCPT ); Sun, 3 Mar 2019 22:06:31 -0500 Received: by mail-qk1-f170.google.com with SMTP id x6so2068718qki.6 for ; Sun, 03 Mar 2019 19:06:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lca.pw; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=SZenl6cB66qwgrDNL51fYcS3OY/z1uUQwYTqTUFbEgU=; b=SF6Z79xJdSaEQZ/iHzLjAgb1Qg7lrK2m9tSemuPBjAy8Gb6X5ah6Fj1GeSmn/8hzTH oZlP1UmUqeiZi22edQVKw5NIpzivPy0ylQlu8ZIFDUSjyKEi5goKQHh7SHFuRFNLvy4+ pnuFjuyXMgAJOPT8aJgdsV3q7kFS1cnq467XpWQQGDdTM451XFRRr5HqfIXnbyPLDgss DT3hXAepGlHNUhttCriph3D5XhUpZG5xBLmopLAivgl+Rize8PGKZPcgJ9YJ3UH9NJNC yVRPJWGxtuJhTk66G6QXMAAhqmdZsnA5tYNc09AcS4/oVZEnZnrNIU4DZS0EWxNSenEh V6Gw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=SZenl6cB66qwgrDNL51fYcS3OY/z1uUQwYTqTUFbEgU=; b=Ym+cWZonUc06H5+iTIcqgN11aOhCuFYcyeLBzjgg6Pp6VJVe73N/57Gfl2Nk8cB2+k TgoLQAB3a7LN2bG1vDX9kwrk1b8ASXlYk+JCKlE7CCN6+FBnUcPi1X93pNOB0lSwzJWZ f1yFkDiVmlEUhTL5MK0QJKt/UzQMuQug2ZtuwO0741DIGOzlt/olZH7AcM/cuELGECzw US2L3PTzjB8xw2641cDH3tIbRjFFswXlikOJPiELX/a1q+nc4g4WBPzmu3LcxU2DFJwt UM0xkAIAGxtpfUorJcV+bT0fMgVQ3UMJ0Sc4q9LRrv4qjdgAlCb+JwxIrL/jnKm5vwu0 xPhw== X-Gm-Message-State: APjAAAUm8mZKbmMy3sE2LHOcs2LIEgHe8rfvffNSuGmIv+EwOdl4b2Ra Tkd9s+SbNYAItdlMU9oQbkawsDQJIL0= X-Google-Smtp-Source: APXvYqwJzjftsVzLEzEBfxBPtBg3hMpSp01DFN0IbUdtxC3UsWcNOgA2+Lw7Bz5g/e4K0lRv6OBpgQ== X-Received: by 2002:a37:c554:: with SMTP id p81mr12134479qki.337.1551668790240; Sun, 03 Mar 2019 19:06:30 -0800 (PST) Received: from ovpn-120-151.rdu2.redhat.com (pool-71-184-117-43.bstnma.fios.verizon.net. [71.184.117.43]) by smtp.gmail.com with ESMTPSA id 46sm3644139qto.87.2019.03.03.19.06.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 03 Mar 2019 19:06:29 -0800 (PST) Subject: Re: [PATCH -next] lockdep: skip debugobjects for lock_classes[] init To: Bart Van Assche , peterz@infradead.org, mingo@redhat.com, will.deacon@arm.com Cc: longman@redhat.com, tglx@linutronix.de, linux-kernel@vger.kernel.org References: <20190303040224.7666-1-cai@lca.pw> From: Qian Cai Message-ID: <59ac7210-03f5-99db-8ffd-47dbfc307709@lca.pw> Date: Sun, 3 Mar 2019 22:06:27 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.3.3 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/3/19 1:19 PM, Bart Van Assche wrote: > [PATCH] locking/lockdep: Only call init_rcu_head() after RCU has been >  initialized > > init_data_structures_once() is called for the first time before RCU has > been initialized. Make sure that init_rcu_head() is called before the > RCU head is used and after RCU has been initialized. > > Signed-off-by: Bart Van Assche I like your approach more. Tested-by: Qian Cai