From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [PATCH v4 0/4] mutex: Improve mutex performance by doing less atomic-ops & better spinning Date: Fri, 19 Apr 2013 09:37:31 +0200 Message-ID: <20130419073731.GD20897@gmail.com> References: <1366226594-5506-1-git-send-email-Waiman.Long@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-ee0-f52.google.com ([74.125.83.52]:34240 "EHLO mail-ee0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754760Ab3DSHpg (ORCPT ); Fri, 19 Apr 2013 03:45:36 -0400 Content-Disposition: inline In-Reply-To: <1366226594-5506-1-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" , "Paul E. McKenney" , David Howells , Dave Jones , Clark Williams , Peter Zijlstra , linux-kernel@vger.kernel.org, x86@kernel.org, linux-arch@vger.kernel.org, "Chandramouleeswaran, Aswin" , Davidlohr Bueso , "Norton, Scott J" , Rik van Riel * Waiman Long wrote: > v3->v4 > - Merge patch 4 into patch 2 > - Move patch 5 forward to become patch 1 > > v2->v3 > - Add patch 4 to remove new typedefs introduced in patch 2. > - Add patch 5 to remove SCHED_FEAT_OWNER_SPIN and move the mutex > spinning code to mutex.c. > > v1->v2 > - Remove the 2 mutex spinner patches and replaced it by another one > to improve the mutex spinning process. > - Remove changes made to kernel/mutex.h & localize changes in > kernel/mutex.c. > - Add an optional patch to remove architecture specific check in patch > 1. The patches look pretty nice now - thanks Waiman. I have applied them to tip:core/locking and started testing them. Thanks, Ingo