From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1766928AbXDFMcD (ORCPT ); Fri, 6 Apr 2007 08:32:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1766929AbXDFMcD (ORCPT ); Fri, 6 Apr 2007 08:32:03 -0400 Received: from amsfep20-int.chello.nl ([62.179.120.15]:47937 "EHLO amsfep20-int.chello.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1766928AbXDFMcB (ORCPT ); Fri, 6 Apr 2007 08:32:01 -0400 Subject: Re: [PATCH] FUTEX : new PRIVATE futexes From: Peter Zijlstra To: Eric Dumazet Cc: Ulrich Drepper , Andrew Morton , Dave Jones , Nick Piggin , Ingo Molnar , Andi Kleen , Ravikiran G Thirumalai , "Shai Fultheim (Shai@scalex86.org)" , pravin b shelar , linux-kernel@vger.kernel.org In-Reply-To: <20070405194942.1414c030.dada1@cosmosbay.com> References: <20060808070708.GA3931@localhost.localdomain> <200608090826.28249.dada1@cosmosbay.com> <200608090843.52893.dada1@cosmosbay.com> <200703152010.35614.dada1@cosmosbay.com> <20070405194942.1414c030.dada1@cosmosbay.com> Content-Type: text/plain Date: Fri, 06 Apr 2007 14:31:58 +0200 Message-Id: <1175862718.6483.174.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.10.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2007-04-05 at 19:49 +0200, Eric Dumazet wrote: > Hi all > > I'm pleased to present this patch which improves linux futexes performance and > scalability, merely avoiding taking mmap_sem rwlock. > > Ulrich agreed with the API and said glibc work could start as soon > as he gets a Fedora kernel with it :) > > Andrew, could we get this in mm as well ? This version is against 2.6.21-rc5-mm4 > (so supports 64bit futexes) > > In this third version I dropped the NUMA optims and process private hash table, > to let new API come in and be tested. Good work, Thanks! Acked-by: Peter Zijlstra