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=-2.3 required=3.0 tests=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 18BF0C7618F for ; Mon, 15 Jul 2019 07:27:22 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 718A120868 for ; Mon, 15 Jul 2019 07:27:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 718A120868 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-16459-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 32433 invoked by uid 550); 15 Jul 2019 07:27:12 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 32414 invoked from network); 15 Jul 2019 07:27:11 -0000 Date: Mon, 15 Jul 2019 09:26:48 +0200 From: Oleg Nesterov To: Joel Fernandes Cc: "Paul E. McKenney" , linux-kernel@vger.kernel.org, Alexey Kuznetsov , Bjorn Helgaas , Borislav Petkov , c0d1n61at3@gmail.com, "David S. Miller" , edumazet@google.com, Greg Kroah-Hartman , Hideaki YOSHIFUJI , "H. Peter Anvin" , Ingo Molnar , Jonathan Corbet , Josh Triplett , keescook@chromium.org, kernel-hardening@lists.openwall.com, kernel-team@android.com, Lai Jiangshan , Len Brown , linux-acpi@vger.kernel.org, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Mathieu Desnoyers , neilb@suse.com, netdev@vger.kernel.org, Pavel Machek , peterz@infradead.org, "Rafael J. Wysocki" , Rasmus Villemoes , rcu@vger.kernel.org, Steven Rostedt , Tejun Heo , Thomas Gleixner , will@kernel.org, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" Subject: Re: [PATCH v2 3/9] rcu/sync: Remove custom check for reader-section Message-ID: <20190715072648.GA1222@redhat.com> References: <20190712170024.111093-1-joel@joelfernandes.org> <20190712170024.111093-4-joel@joelfernandes.org> <20190712213559.GA175138@google.com> <20190712233206.GZ26519@linux.ibm.com> <20190713030150.GA246587@google.com> <20190713031008.GA248225@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190713031008.GA248225@google.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Mon, 15 Jul 2019 07:26:59 +0000 (UTC) On 07/12, Joel Fernandes wrote: > > static inline bool rcu_sync_is_idle(struct rcu_sync *rsp) > { > - RCU_LOCKDEP_WARN(!rcu_read_lock_held() && > - !rcu_read_lock_bh_held() && > - !rcu_read_lock_sched_held(), > + RCU_LOCKDEP_WARN(!rcu_read_lock_any_held(), Yes, this is what I meant. Sorry for confusion, I should have mentioned that rcu_sync_is_idle() was recently updated when I suggested to use the new helper. Acked-by: Oleg Nesterov