Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751291AbbG3Pbj (ORCPT ); Thu, 30 Jul 2015 11:31:39 -0400 Received: from casper.infradead.org ([85.118.1.10]:55647 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750819AbbG3Pbi (ORCPT ); Thu, 30 Jul 2015 11:31:38 -0400 Date: Thu, 30 Jul 2015 17:31:29 +0200 From: Peter Zijlstra To: "Paul E. McKenney" Cc: linux-kernel@vger.kernel.org, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com, bobby.prani@gmail.com Subject: Re: [PATCH tip/core/rcu 02/19] rcu: Remove CONFIG_RCU_CPU_STALL_INFO Message-ID: <20150730153129.GK25159@twins.programming.kicks-ass.net> References: <20150717232901.GA22511@linux.vnet.ibm.com> <1437175764-24096-1-git-send-email-paulmck@linux.vnet.ibm.com> <1437175764-24096-2-git-send-email-paulmck@linux.vnet.ibm.com> <20150730124955.GY19282@twins.programming.kicks-ass.net> <20150730151341.GD27280@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150730151341.GD27280@linux.vnet.ibm.com> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1124 Lines: 23 On Thu, Jul 30, 2015 at 08:13:41AM -0700, Paul E. McKenney wrote: > On Thu, Jul 30, 2015 at 02:49:55PM +0200, Peter Zijlstra wrote: > > On Fri, Jul 17, 2015 at 04:29:07PM -0700, Paul E. McKenney wrote: > > > From: "Paul E. McKenney" > > > > > > The CONFIG_RCU_CPU_STALL_INFO has been default-y for a couple of > > > releases with no complaints, so it is time to eliminate this Kconfig > > > option entirely, so that the long-form RCU CPU stall warnings cannot > > > be disabled. This commit does just that. > > > > I would think the tiny people (/me looks @ Josh) would complain about > > this.. > > They might, but if they do, I will point out that CONFIG_RCU_CPU_STALL_INFO > only has effect for Tree RCU. And also that RCU CPU stall warnings are > compiled out unless CONFIG_RCU_TRACE=y, which I suspect they are disabling. Ah, fair enough. -- 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/