From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752253Ab0LWWvT (ORCPT ); Thu, 23 Dec 2010 17:51:19 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.124]:65201 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751608Ab0LWWvR (ORCPT ); Thu, 23 Dec 2010 17:51:17 -0500 X-Authority-Analysis: v=1.1 cv=UQuFHoD2CPQ248x8AXEbKhr4z9AaDqApxmEl3BhfZ64= c=1 sm=0 a=Ar2y4WLajYgA:10 a=bbbx4UPp9XUA:10 a=OPBmh+XkhLl+Enan7BmTLg==:17 a=VwQbUJbxAAAA:8 a=WkNP1CVgQmBOtLH6c5cA:9 a=w0o3Ozu8mCxCVFLuxmkA:7 a=L1ezqvitGTH2P92ScqGq2UvVz1IA:4 a=OPBmh+XkhLl+Enan7BmTLg==:117 X-Cloudmark-Score: 0 X-Originating-IP: 67.242.120.143 Message-Id: <20101223224755.078983538@goodmis.org> User-Agent: quilt/0.48-1 Date: Thu, 23 Dec 2010 17:47:55 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Thomas Gleixner , Peter Zijlstra , Lai Jiangshan Subject: [RFC][RT][PATCH 0/4] rtmutex: Simplify PI code Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is still a little buggy. I've been hitting a hang when running dbench 100 in a loop. But I also hit that hang with vanilla -rt. But I'm sure this still has some things that need to be straighten out. Anyway, you can either apply the following patches or pull the code from the listed git repo. This still needs to be worked out, but since I'm taking off for the rest of the year, I might as well show you where I ended up at. The following patches are in: git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-rt.git branch: rt/tip/rt/devel Lai Jiangshan (1): rtmutex: Ensure only the top waiter or higher priority task can take the lock Steven Rostedt (3): rtmutex: Only save lock depth once in spin_slowlock rtmutex: Try to take lock early in rt_spin_lock_slowlock() rtmutex: Revert Optimize rt lock wakeup ---- kernel/futex.c | 22 +-- kernel/rt.c | 10 +- kernel/rtmutex-debug.c | 1 - kernel/rtmutex.c | 458 ++++++++++++++++++----------------------------- kernel/rtmutex_common.h | 18 +-- 5 files changed, 188 insertions(+), 321 deletions(-)