From mboxrd@z Thu Jan 1 00:00:00 1970 From: Waiman Long Subject: Re: [PATCH v6 1/3] qrwlock: A queue read/write lock implementation Date: Tue, 12 Nov 2013 09:53:35 -0500 Message-ID: <528240EF.5030600@hp.com> References: <1384267735-43213-1-git-send-email-Waiman.Long@hp.com> <1384267735-43213-3-git-send-email-Waiman.Long@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from g1t0027.austin.hp.com ([15.216.28.34]:37413 "EHLO g1t0027.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752448Ab3KLOyA (ORCPT ); Tue, 12 Nov 2013 09:54:00 -0500 In-Reply-To: <1384267735-43213-3-git-send-email-Waiman.Long@hp.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Waiman Long Cc: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Arnd Bergmann , linux-arch@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Steven Rostedt , Andrew Morton , Michel Lespinasse , Andi Kleen , Rik van Riel , "Paul E. McKenney" , Linus Torvalds , Raghavendra K T , George Spelvin , Tim Chen , aswin@hp.com, Scott J Norton On 11/12/2013 09:48 AM, Waiman Long wrote: > This patch introduces a new read/write lock implementation that put > waiting readers and writers into a queue instead of actively contending > the lock like the current read/write lock implementation. This will > improve performance in highly contended situation by reducing the > cache line bouncing effect. > > Sorry, it is a fat finger. Please ignore this v6 1/3 patch. It is an old one. -Longman