From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars Segerlund Subject: some rt-preempt help if possible. Date: Thu, 26 Apr 2012 22:27:30 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 To: linux-rt-users@vger.kernel.org Return-path: Received: from mail-lpp01m010-f46.google.com ([209.85.215.46]:54691 "EHLO mail-lpp01m010-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758892Ab2DZU1c (ORCPT ); Thu, 26 Apr 2012 16:27:32 -0400 Received: by lahj13 with SMTP id j13so9608lah.19 for ; Thu, 26 Apr 2012 13:27:30 -0700 (PDT) Sender: linux-rt-users-owner@vger.kernel.org List-ID: Hi Everyone, The linux cnc is trying to port their software to rt preempt, however there is a patched version for emc 2.4 that works ok, and when these patches are brought to emc 2.5 it hangs on startup. Aparently it's a mutex that hangs. Now any help or pointers would be appreciated, particulary on how to debug a mutex hang .... Roughly the same code runs ok in the old version, and most people on the linuxcnc list are only familiar with RTLinux and RTAI. Any help appreciated, since the code is still 'wet', so this is a small call for help is someone feels like it. If it's of topic, or not interesting please ignore. http://news.gmane.org/gmane.linux.distributions.emc.devel / regards, Lars Segerlund