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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 98637C33C9E for ; Sat, 18 Jan 2020 02:34:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5D46724673 for ; Sat, 18 Jan 2020 02:34:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=joelfernandes.org header.i=@joelfernandes.org header.b="NmhpOfXH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730588AbgARCeg (ORCPT ); Fri, 17 Jan 2020 21:34:36 -0500 Received: from mail-pj1-f53.google.com ([209.85.216.53]:36511 "EHLO mail-pj1-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727033AbgARCeg (ORCPT ); Fri, 17 Jan 2020 21:34:36 -0500 Received: by mail-pj1-f53.google.com with SMTP id n59so4183934pjb.1 for ; Fri, 17 Jan 2020 18:34:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=UpUDWKuFM/kCm4AcD4Eed4r776MUrRTeA5ImShZibWU=; b=NmhpOfXHmRSx+piZyBISrFGWiMtP9aJkjLtxDZH+fL//foxAl2XQBe3q7RZRV+fGJs tuXvY7jkdTKV9O/yjTJdv1XdQSlOOkPGbxktdFwYLlWMk9G3YCXTOGphqbjR8QFcBVYA drYO9As2yhZzfIY31oLBj7RsswmTO7O1w1jcw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=UpUDWKuFM/kCm4AcD4Eed4r776MUrRTeA5ImShZibWU=; b=mQQRhwip+3NZYBt7l2gQxPwcj/jeIX/hvKSXhRIqszZOCuIaWilwrynRn7WWBq0QZS rSitZHpHnOjub+xrpXoAj/FV7LH5nwZIex3PBzTdj3qzZa05uUHEszU30/+s09sdiNk7 Hjh64Xi97g3j4ifx70hqs53pAMVblI/i5azaH1/qyt3Pq+aeRrTO3hub5DnH9DnkjoW1 Pdd/3px2M7kiaZtaWOua0NmJXbjWRLjduBB+sHhOi/h/QP6Rgr2FIx5oCm0KJ1uuQ9Sw SXpz9kFl/vUSzXQqIq0KtbDdRP4vdse0EqFeon90kpmuQjdWGr5sKbSgny/vbr3ALn7F Gt1Q== X-Gm-Message-State: APjAAAVrBAveVmC7QQFVapy1BgiRTQRWb3Ngrjt2koNcdObxlQpLA/2+ qyShEVWSlXKRp9TQnZ5y1l1rZw== X-Google-Smtp-Source: APXvYqyWBLlk0ZIfrAc3HhhNm0ZSlGLY/A7K/l0Tm0zFPX6hc3hKeSpZemyIneEgZGnLR1Z2e6jYQQ== X-Received: by 2002:a17:90a:d3d7:: with SMTP id d23mr9114258pjw.53.1579314875460; Fri, 17 Jan 2020 18:34:35 -0800 (PST) Received: from localhost ([2620:15c:6:12:9c46:e0da:efbf:69cc]) by smtp.gmail.com with ESMTPSA id fa21sm8820424pjb.17.2020.01.17.18.34.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jan 2020 18:34:35 -0800 (PST) Date: Fri, 17 Jan 2020 21:34:34 -0500 From: Joel Fernandes To: "Paul E. McKenney" Cc: rcu@vger.kernel.org, rostedt@goodmis.org, bristot@redhat.com Subject: Re: RCU_BOOST not working for me Message-ID: <20200118023434.GB244899@google.com> References: <20200117215814.GB206250@google.com> <20200117221804.GA211665@google.com> <20200117231756.GO2935@paulmck-ThinkPad-P72> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200117231756.GO2935@paulmck-ThinkPad-P72> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: rcu-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org On Fri, Jan 17, 2020 at 03:17:56PM -0800, Paul E. McKenney wrote: [...] > But rcutorture already has tests for RCU priority boosting. Or are those > failing in some way? Yes there are tests, but I thought of just a simple experiment to study this. Purely since it is existing RCU kernel code that I'd like to understand. And me/Daniel are also looking into possibly using run-time / trace-based verification some of these behaviors. thanks, - Joel