Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754232Ab3IISgm (ORCPT ); Mon, 9 Sep 2013 14:36:42 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:21913 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752485Ab3IISgl (ORCPT ); Mon, 9 Sep 2013 14:36:41 -0400 X-Authority-Analysis: v=2.0 cv=ddwCLAre c=1 sm=0 a=Sro2XwOs0tJUSHxCKfOySw==:17 a=Drc5e87SC40A:10 a=JDfofD-L5ZgA:10 a=5SG0PmZfjMsA:10 a=kj9zAlcOel0A:10 a=meVymXHHAAAA:8 a=KGjhK52YXX0A:10 a=5p3hctMY2UsA:10 a=VnNF1IyMAAAA:8 a=gOrCO-VQRb9PR5kAWWsA:9 a=CjuIK1q_8ugA:10 a=iZ7TXPg_hGsA:10 a=KxqS7gh_mc4A:10 a=Sro2XwOs0tJUSHxCKfOySw==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 67.255.60.225 Date: Mon, 9 Sep 2013 14:36:39 -0400 From: Steven Rostedt To: paulmck@linux.vnet.ibm.com Cc: Mathieu Desnoyers , Frederic Weisbecker , Peter Zijlstra , Eric Dumazet , linux-kernel@vger.kernel.org, mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, dhowells@redhat.com, edumazet@google.com, darren@dvhart.com, sbw@mit.edu Subject: Re: [PATCH] rcu: Is it safe to enter an RCU read-side critical section? Message-ID: <20130909143639.66ba6c7c@gandalf.local.home> In-Reply-To: <20130909175656.GF3966@linux.vnet.ibm.com> References: <20130909085504.2ddd7e69@gandalf.local.home> <20130909130851.GC16280@somewhere> <20130909092142.05780991@gandalf.local.home> <20130909134505.GF16280@somewhere> <20130909135656.GT3966@linux.vnet.ibm.com> <20130909101629.32df27a2@gandalf.local.home> <20130909161708.GX3966@linux.vnet.ibm.com> <20130909123422.7936e868@gandalf.local.home> <20130909165836.GB3966@linux.vnet.ibm.com> <20130909172908.GA31239@Krystal> <20130909175656.GF3966@linux.vnet.ibm.com> X-Mailer: Claws Mail 3.9.2 (GTK+ 2.24.20; 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 List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 660 Lines: 19 On Mon, 9 Sep 2013 10:56:56 -0700 "Paul E. McKenney" wrote: > Although I do like rcu_is_active() better than rcu_read_check(), my > concern with rcu_is_active() is that it can easily be mistaken for a > global state rather than a per-CPU/thread/task/whatever state. rcu_is_active_local(); Although, even though it's cute. I think "rcu_is_watching_you()" has no ambiguity. -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/