Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967256Ab2EQPdM (ORCPT ); Thu, 17 May 2012 11:33:12 -0400 Received: from merlin.infradead.org ([205.233.59.134]:54688 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967178Ab2EQPdJ convert rfc822-to-8bit (ORCPT ); Thu, 17 May 2012 11:33:09 -0400 Message-ID: <1337268779.4281.38.camel@twins> Subject: Re: [RFC][PATCH RT] rwsem_rt: Another (more sane) approach to mulit reader rt locks From: Peter Zijlstra To: paulmck@linux.vnet.ibm.com Cc: Steven Rostedt , LKML , RT , Thomas Gleixner , Clark Williams Date: Thu, 17 May 2012 17:32:59 +0200 In-Reply-To: <20120517151838.GA8692@linux.vnet.ibm.com> References: <1337090625.14207.304.camel@gandalf.stny.rr.com> <20120517151838.GA8692@linux.vnet.ibm.com> Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Mailer: Evolution 3.2.2- Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 852 Lines: 22 On Thu, 2012-05-17 at 08:18 -0700, Paul E. McKenney wrote: > Some researchers at MIT RCU-ified this lock: > > http://people.csail.mit.edu/nickolai/papers/clements-bonsai.pdf Ah, as have I [1].. and they seem to have gotten about as far as I have, which means almost there but not quite [2] :-) The most interesting case is file maps and they simply ignored those. While I appreciate that from an academic pov, -- they can still write a paper on the other interesting bits -- I don't really like it from a practical point. [1] https://lkml.org/lkml/2010/1/4/257 [2] https://lkml.org/lkml/2010/1/4/532 -- 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/