Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932601Ab3CVDjC (ORCPT ); Thu, 21 Mar 2013 23:39:02 -0400 Received: from shelob.surriel.com ([74.92.59.67]:39142 "EHLO shelob.surriel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753731Ab3CVDjA (ORCPT ); Thu, 21 Mar 2013 23:39:00 -0400 Message-ID: <514BD24C.3080902@surriel.com> Date: Thu, 21 Mar 2013 23:38:52 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Andrew Morton CC: Peter Hurley , torvalds@linux-foundation.org, davidlohr.bueso@hp.com, linux-kernel@vger.kernel.org, hhuang@redhat.com, jason.low2@hp.com, walken@google.com, lwoodman@redhat.com, chegu_vinod@hp.com, Dave Jones Subject: Re: ipc,sem: sysv semaphore scalability References: <1363809337-29718-1-git-send-email-riel@surriel.com> <20130321141058.76e028e492f98f6ee6e60353@linux-foundation.org> <1363902605.4488.33.camel@thor.lan> <20130321150127.5263c56d2b5e549f76034342@linux-foundation.org> In-Reply-To: <20130321150127.5263c56d2b5e549f76034342@linux-foundation.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1542 Lines: 38 On 03/21/2013 06:01 PM, Andrew Morton wrote: > On Thu, 21 Mar 2013 17:50:05 -0400 Peter Hurley wrote: > >> On Thu, 2013-03-21 at 14:10 -0700, Andrew Morton wrote: >>> On Wed, 20 Mar 2013 15:55:30 -0400 Rik van Riel wrote: >>> >>>> This series makes the sysv semaphore code more scalable, >>>> by reducing the time the semaphore lock is held, and making >>>> the locking more scalable for semaphore arrays with multiple >>>> semaphores. >>>> >>>> The first four patches were written by Davidlohr Buesso, and >>>> reduce the hold time of the semaphore lock. >>>> >>>> The last three patches change the sysv semaphore code locking >>>> to be more fine grained, providing a performance boost when >>>> multiple semaphores in a semaphore array are being manipulated >>>> simultaneously. >>> >>> These patches conflict pretty badly with Peter's: >> >> On one point I'm a little confused: my series has been in linux-next for >> a while. On what tree is this series based? > > It'll be based on mainline. People often forget to peek into > linux-next when preparing patches. In the great majority of cases > that's OK. Occasionally, we lose... I'll be happy to rebase the series onto linux-next, to make merging easier for you. -- All rights reversed. -- 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/