Received: by 2002:ac0:a5a7:0:0:0:0:0 with SMTP id m36-v6csp778054imm; Wed, 11 Jul 2018 10:46:43 -0700 (PDT) X-Google-Smtp-Source: AAOMgpcbRZI4ZKXZqhJmugNjO1TH1zlPXAtMXJvec2NTchdTZXRXAvSJWc+FogisD7kZqQaPAE5g X-Received: by 2002:a17:902:74c2:: with SMTP id f2-v6mr29320136plt.260.1531331203276; Wed, 11 Jul 2018 10:46:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1531331203; cv=none; d=google.com; s=arc-20160816; b=bnxTnpXAPCydicS19/26BcDqfXA18dY5KVRz5PVYgrMzyqWO6aa2ubygAJFLwoJ0uM PPSJJiCUmV5FO18rgiphWv67b7oehi73NUZVxe1LHY75S/5KHNQPCklxuzt7BYdj+uYN bYA+7fc4KS4A4EPrtgBbnBPEBpvCzgGfJZsd3caahi6KOTfx5O7eUjnp+K/UyZuy3dpf 6Gl23WzcLH8zIsbJfiPYcXaWpGhFNhMjYkJ7RjZ6h58u/NXUvz0l4CFYJpZre8c0a4Zu oVaaUVz2Hn7VlViSn3ywphDeOlaa/g1TJLVCt4mwch7WF1Dg7TJ9Uq3+LBya4X6N8hmD aYog== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date :arc-authentication-results; bh=SbOPmLpxTsQL2ywbgJ/ATtuMocbP2ZOz5JpsAEDEksE=; b=ky7dc7bk/JQqDfdN77CLnn7HtbyLAPq3rYat0P0v18//9S/juJ9JxXH5+enue/hF6q x2G4G4sT/7IGg4iBjTxMSJlkFScK3W0aN9pgXvw4vSwiaP/kKS02ZVTTPn/tbYCAaeT/ lYPkV7Vw5CF1aWXNbVGy/SmsvRmx+bmiIM9bJHS2cfx5wo1Khlb9BSbCAapxV389MdkL FgZxk5BMOhKTfcALgeSLYM8Jw7SXOP9XWZRVRAaL8P6NMUGfHILTKEllPD5kXDPvcGFz DFd+EVzni8TlHWCTUJSQaw/iQAJzQ9MPOVdO5dX9ETjSXkl7/2ncJUpSReyboMw8wU+s fc3A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id v2-v6si4484845pgt.228.2018.07.11.10.46.27; Wed, 11 Jul 2018 10:46:43 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389105AbeGKPbx (ORCPT + 99 others); Wed, 11 Jul 2018 11:31:53 -0400 Received: from mail.kernel.org ([198.145.29.99]:54130 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732535AbeGKPbx (ORCPT ); Wed, 11 Jul 2018 11:31:53 -0400 Received: from gandalf.local.home (cpe-66-24-56-78.stny.res.rr.com [66.24.56.78]) (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 7AB5120883; Wed, 11 Jul 2018 15:27:01 +0000 (UTC) Date: Wed, 11 Jul 2018 11:26:59 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: Joel Fernandes , linux-kernel@vger.kernel.org, Boqun Feng , Byungchul Park , Ingo Molnar , Julia Cartwright , linux-kselftest@vger.kernel.org, Masami Hiramatsu , Mathieu Desnoyers , Namhyung Kim , Paul McKenney , Thomas Glexiner , Tom Zanussi Subject: Re: [PATCH v9 4/7] tracepoint: Make rcuidle tracepoint callers use SRCU Message-ID: <20180711112659.366ec453@gandalf.local.home> In-Reply-To: <20180711151751.GI2476@hirez.programming.kicks-ass.net> References: <20180628182149.226164-1-joel@joelfernandes.org> <20180628182149.226164-5-joel@joelfernandes.org> <20180711125647.GG2476@hirez.programming.kicks-ass.net> <20180711090649.68af40f9@gandalf.local.home> <20180711151751.GI2476@hirez.programming.kicks-ass.net> X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 11 Jul 2018 17:17:51 +0200 Peter Zijlstra wrote: > I just read the comment that goes with that function; the order doesn't > matter. All we want to ensure is that the unregistration is visible to > either sched or srcu tracepoint users. Yeah, but I think it is still good to change the order. It doesn't hurt, and in my opinion makes the code a bit more robust. -- Steve