Received: by 2002:ac0:a5a7:0:0:0:0:0 with SMTP id m36-v6csp871971imm; Wed, 11 Jul 2018 12:26:50 -0700 (PDT) X-Google-Smtp-Source: AAOMgpcDd9ui4uk79JMJt4sGUQfcMeogPI+4k1CP4vQkpocJ0BsALt19jlILhQtidQq2cLxUDQ4K X-Received: by 2002:a63:aa44:: with SMTP id x4-v6mr28344779pgo.120.1531337210827; Wed, 11 Jul 2018 12:26:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1531337210; cv=none; d=google.com; s=arc-20160816; b=CLvDiS5lV+y4I7ZgnmeC/Zb2Z7er4roVOx9iSlojhVokw94E8xXyxoTV4xAtXjKHV/ bCz4NZ+AkOeWpCFkUnrDzeLLRwCKQ4le9v2wYFf6lJGQGywcWh03okIogw9BBF2xkP6g ipiFq2vIQR1rkP/H+BXnUKHBuqifGSw4pkQ34mzg/H4OGyWLU31dWtvJM23H2uroM+0w 36dTkRMUQrql7x5k+S2SS3IUzubwh4TBC3hTIP16Opl6EJBnn1QOmJlVAvEZkiKhNsBk H+qKhEjvsDt4bg4C8m0z6UZmb6JzBCU2ksFyw442lwcnPIcUt6QMNbB5cdpp7XQgvFAC qhow== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:thread-index:thread-topic :content-transfer-encoding:mime-version:subject:references :in-reply-to:message-id:cc:to:from:date:dkim-signature:dkim-filter :arc-authentication-results; bh=nCwPnnAcAhfClvqmpDXcn/VKXNULZpqWVY8Yjrc3FGg=; b=vj+X95K10sWPwuAUYGLPn1p7399p0JCrxa3bDTcsxAzPxesWxTDuxfH+yOzfkv/Iwo rNcpMwDXGgKjZKE7nVjFnWNhmgTzZ1lMYPAIuXZzOR9e/HYlEJVs+0pqJtWCApNrKw3z p5sP9/V++mH0OrIkXWvoM41jIKyspBMOrrI7BnfTx6AFykGoWrwa+9Vadmd1sVtTkW7D 8eMH19Pk4a6WEq75bV/3Gnem+LLDzv9P+URIV4qWJr4qCIgJaFItpb4AVvEMdSa7yPj2 0ocAXfQt4G7VijFk0qdogB0UekIvD2e/YjuyYikohxlonLFDlrv9dtE/6XbsBoWw41bM jm/g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@efficios.com header.s=default header.b=Z64DtJgR; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=efficios.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id g12-v6si19585145pla.194.2018.07.11.12.26.35; Wed, 11 Jul 2018 12:26:50 -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; dkim=pass header.i=@efficios.com header.s=default header.b=Z64DtJgR; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=efficios.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389918AbeGKQv5 (ORCPT + 99 others); Wed, 11 Jul 2018 12:51:57 -0400 Received: from mail.efficios.com ([167.114.142.138]:52992 "EHLO mail.efficios.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733026AbeGKQv4 (ORCPT ); Wed, 11 Jul 2018 12:51:56 -0400 Received: from localhost (ip6-localhost [IPv6:::1]) by mail.efficios.com (Postfix) with ESMTP id 9524B22F788; Wed, 11 Jul 2018 12:46:45 -0400 (EDT) Received: from mail.efficios.com ([IPv6:::1]) by localhost (mail02.efficios.com [IPv6:::1]) (amavisd-new, port 10032) with ESMTP id V_EMeT7Bvk-8; Wed, 11 Jul 2018 12:46:45 -0400 (EDT) Received: from localhost (ip6-localhost [IPv6:::1]) by mail.efficios.com (Postfix) with ESMTP id E407522F785; Wed, 11 Jul 2018 12:46:44 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.10.3 mail.efficios.com E407522F785 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=efficios.com; s=default; t=1531327604; bh=nCwPnnAcAhfClvqmpDXcn/VKXNULZpqWVY8Yjrc3FGg=; h=Date:From:To:Message-ID:MIME-Version; b=Z64DtJgRYUcyK8JwdyaKuMxZttIbPxgVa5NpqPMK4rPCGHs6qLOn6XryJwYYOognj JXCh92NgZgPLeIQEDK+3+6WR5Vbwbqmb+HsFz3NrEiWiJQPIk0kc8zfmlqg2CVxywv CWO0hwdc12fJo3O1SaJDNfnVi7F1GsPs5aQ343DYAUBmzeXM00AAQdQKM++xJFv5aX YF2a/E97C3p60vX8LJPBH+2Abfh+PtAdbcjuEQrrrCO3N1VyJ/VeZZhejbzolu8wF2 zSzDTUjadfACONKkzG/BKRyloJLuEkTQAuxwx/XByACF8DDtD0ILTeUuxF0dF/ZrxG B3YnY2clJ9ziA== X-Virus-Scanned: amavisd-new at efficios.com Received: from mail.efficios.com ([IPv6:::1]) by localhost (mail02.efficios.com [IPv6:::1]) (amavisd-new, port 10026) with ESMTP id mSzE3BOeyYPk; Wed, 11 Jul 2018 12:46:44 -0400 (EDT) Received: from mail02.efficios.com (mail02.efficios.com [167.114.142.138]) by mail.efficios.com (Postfix) with ESMTP id CD16B22F777; Wed, 11 Jul 2018 12:46:44 -0400 (EDT) Date: Wed, 11 Jul 2018 12:46:44 -0400 (EDT) From: Mathieu Desnoyers To: rostedt Cc: Peter Zijlstra , "Joel Fernandes, Google" , linux-kernel , Boqun Feng , Byungchul Park , Ingo Molnar , Julia Cartwright , linux-kselftest , Masami Hiramatsu , Namhyung Kim , "Paul E. McKenney" , Thomas Gleixner , Tom Zanussi Message-ID: <395785739.4156.1531327604723.JavaMail.zimbra@efficios.com> In-Reply-To: <20180711112659.366ec453@gandalf.local.home> 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> <20180711112659.366ec453@gandalf.local.home> Subject: Re: [PATCH v9 4/7] tracepoint: Make rcuidle tracepoint callers use SRCU MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [167.114.142.138] X-Mailer: Zimbra 8.8.8_GA_2096 (ZimbraWebClient - FF52 (Linux)/8.8.8_GA_1703) Thread-Topic: tracepoint: Make rcuidle tracepoint callers use SRCU Thread-Index: Pn16iE/TK2xmg6UpWnWUBWMppkV3EA== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ----- On Jul 11, 2018, at 11:26 AM, rostedt rostedt@goodmis.org wrote: > 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. I don't mind. It makes the code more regular. It does not change anything wrt robustness here though. Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com