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=-5.2 required=3.0 tests=FROM_EXCESS_BASE64, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 193E6C3A5A6 for ; Thu, 19 Sep 2019 17:54:52 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E929B21924 for ; Thu, 19 Sep 2019 17:54:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E929B21924 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:47358 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iB0dm-0001NZ-Gf for qemu-devel@archiver.kernel.org; Thu, 19 Sep 2019 13:54:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52264) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iB0Hg-0002eA-2U for qemu-devel@nongnu.org; Thu, 19 Sep 2019 13:32:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iB0He-0007NQ-FZ for qemu-devel@nongnu.org; Thu, 19 Sep 2019 13:31:59 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51970) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iB0He-0007MT-A8 for qemu-devel@nongnu.org; Thu, 19 Sep 2019 13:31:58 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A0BCE301E135 for ; Thu, 19 Sep 2019 17:31:57 +0000 (UTC) Received: from redhat.com (ovpn-112-51.ams2.redhat.com [10.36.112.51]) by smtp.corp.redhat.com (Postfix) with ESMTPS id DC1A819C5B; Thu, 19 Sep 2019 17:31:55 +0000 (UTC) Date: Thu, 19 Sep 2019 18:31:52 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: "Dr. David Alan Gilbert (git)" Subject: Re: [PATCH v3 1/5] rcu: Add automatically released rcu_read_lock variants Message-ID: <20190919173152.GD22853@redhat.com> References: <20190913102538.24167-1-dgilbert@redhat.com> <20190913102538.24167-2-dgilbert@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190913102538.24167-2-dgilbert@redhat.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.41]); Thu, 19 Sep 2019 17:31:57 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: pbonzini@redhat.com, quintela@redhat.com, qemu-devel@nongnu.org, ehabkost@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, Sep 13, 2019 at 11:25:34AM +0100, Dr. David Alan Gilbert (git) wr= ote: > From: "Dr. David Alan Gilbert" >=20 > RCU_READ_LOCK_GUARD() takes the rcu_read_lock and then uses glib's > g_auto infrastructure (and thus whatever the compiler's hooks are) to > release it on all exits of the block. >=20 > WITH_RCU_READ_LOCK_GUARD() is similar but is used as a wrapper for the > lock, i.e.: >=20 > WITH_RCU_READ_LOCK_GUARD() { > stuff under lock > } >=20 > Signed-off-by: Dr. David Alan Gilbert > --- > docs/devel/rcu.txt | 16 ++++++++++++++++ > include/qemu/rcu.h | 25 +++++++++++++++++++++++++ > 2 files changed, 41 insertions(+) Reviewed-by: Daniel P. Berrang=C3=A9 Regards, Daniel --=20 |: https://berrange.com -o- https://www.flickr.com/photos/dberran= ge :| |: https://libvirt.org -o- https://fstop138.berrange.c= om :| |: https://entangle-photo.org -o- https://www.instagram.com/dberran= ge :|