Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753618Ab3IIPrF (ORCPT ); Mon, 9 Sep 2013 11:47:05 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:28378 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751880Ab3IIPrD (ORCPT ); Mon, 9 Sep 2013 11:47:03 -0400 X-Authority-Analysis: v=2.0 cv=fJG7LOme 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=NufY4J3AAAAA:8 a=fxJcL_dCAAAA:8 a=cuYFA6U4GeWgkUuDIpsA:9 a=CjuIK1q_8ugA:10 a=jeBq3FmKZ4MA:10 a=re9sYKne76oA:10 a=Sro2XwOs0tJUSHxCKfOySw==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 67.255.60.225 Date: Mon, 9 Sep 2013 11:47:00 -0400 From: Steven Rostedt To: Steven Rostedt Cc: Christoph Lameter , Peter Zijlstra , "Paul E. McKenney" , Frederic Weisbecker , Eric Dumazet , 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, 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: <20130909114700.76290b50@gandalf.local.home> In-Reply-To: <20130909114116.209aa16b@gandalf.local.home> References: <20130905195234.GA20555@linux.vnet.ibm.com> <20130906105934.GF20519@somewhere> <20130906151851.GQ3966@linux.vnet.ibm.com> <1378488088.31445.39.camel@edumazet-glaptop> <20130906174117.GU3966@linux.vnet.ibm.com> <20130906185927.GE2706@somewhere> <20130909105347.GK31370@twins.programming.kicks-ass.net> <20130909132343.GN3966@linux.vnet.ibm.com> <20130909133604.GC31370@twins.programming.kicks-ass.net> <000001410333127c-486c74ec-3209-4c5e-a92f-0c11e00fa141-000000@email.amazonses.com> <20130909150854.GD26785@twins.programming.kicks-ass.net> <0000014103534c88-48ee11a3-a581-4e52-b2df-3a1168047d96-000000@email.amazonses.com> <20130909114116.209aa16b@gandalf.local.home> 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: 1117 Lines: 32 On Mon, 9 Sep 2013 11:41:16 -0400 Steven Rostedt wrote: > On Mon, 9 Sep 2013 15:24:55 +0000 > Christoph Lameter wrote: > > > On Mon, 9 Sep 2013, Peter Zijlstra wrote: > > > > > > Slander. Certainly validation is good. Its just that PREEMPT kernels are > > > > not in use > > > > > > Complete bullshit, its part of the mainline kernel, lots of people run > > > them -- including me, and any patch is supposed to keep it working. > > > > Nonsense. There is no main line distro that supports full preempt. Its an > > academic exercise. > > Red Hat MRG supports PREEMPT_RT. And Debian has an option to use > PREEMPT_RT too. Two big main line distros. > > So please, cut out the "academic exercise" crap. Ubuntu Lucid supplies a CONFIG_PREEMPT kernel too: http://kernel.ubuntu.com/~kernel-ppa/configs/lucid/amd64--preempt -- 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/