From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756738Ab2CHVZq (ORCPT ); Thu, 8 Mar 2012 16:25:46 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:17249 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754101Ab2CHVZm (ORCPT ); Thu, 8 Mar 2012 16:25:42 -0500 X-Authority-Analysis: v=2.0 cv=Xp94yC59 c=1 sm=0 a=ZycB6UtQUfgMyuk2+PxD7w==:17 a=XQbtiDEiEegA:10 a=5SG0PmZfjMsA:10 a=Q9fys5e9bTEA:10 a=MKyTmu4oqAjF-Hk9SkQA:9 a=PUjeQqilurYA:10 a=ZycB6UtQUfgMyuk2+PxD7w==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.80.29 Message-ID: <1331241940.25686.502.camel@gandalf.stny.rr.com> Subject: Re: [ANNOUNCE] 3.2.9-rt17 From: Steven Rostedt To: Peter Zijlstra Cc: Thomas Gleixner , LKML , linux-rt-users Date: Thu, 08 Mar 2012 16:25:40 -0500 In-Reply-To: <1331241627.11248.430.camel@twins> References: <1331230991.25686.452.camel@gandalf.stny.rr.com> <1331231287.11248.396.camel@twins> <1331232159.25686.456.camel@gandalf.stny.rr.com> <1331235579.11248.402.camel@twins> <1331237441.25686.469.camel@gandalf.stny.rr.com> <1331238369.11248.426.camel@twins> <1331240882.25686.499.camel@gandalf.stny.rr.com> <1331241627.11248.430.camel@twins> Content-Type: text/plain; charset="ISO-8859-15" X-Mailer: Evolution 3.2.2-1 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2012-03-08 at 22:20 +0100, Peter Zijlstra wrote: > Now put the thing on 2 cpus and both tasks can endlessly chase each > other's tail, no? How would this be different than what mainline does? When the lock is released, it will wake up the other task. > The yield will be useless there.. If there's no task with the same priority, it should be a nop. I don't see anything wrong with it. -- Steve