From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753628Ab2CRHTb (ORCPT ); Sun, 18 Mar 2012 03:19:31 -0400 Received: from mailout-de.gmx.net ([213.165.64.23]:39206 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753006Ab2CRHTa (ORCPT ); Sun, 18 Mar 2012 03:19:30 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX19+H8AgX35+96CF57BcWMK8dEOFGUfvG9YSqOyTW2 uR05wgcWy/f0WN Message-ID: <1332055160.7291.7.camel@marge.simpson.net> Subject: Re: [PATCH RFC] rcu: Permit limiting of force_quiescent_state() latency From: Mike Galbraith To: paulmck@linux.vnet.ibm.com Cc: linux-kernel@vger.kernel.org, mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, Valdis.Kletnieks@vt.edu, dhowells@redhat.com, eric.dumazet@gmail.com, darren@dvhart.com, fweisbec@gmail.com, sivanich@sgi.com Date: Sun, 18 Mar 2012 08:19:20 +0100 In-Reply-To: <1332003451.8147.77.camel@marge.simpson.net> References: <20120316160328.GA7207@linux.vnet.ibm.com> <1332003451.8147.77.camel@marge.simpson.net> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.1 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2012-03-17 at 17:57 +0100, Mike Galbraith wrote: > So I bent it up a little, see below. s/bent/busted. FQS_MAX_CPU_VISIT < CPUs == deadlock. Poo. -Mike