From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964875AbVHYVud (ORCPT ); Thu, 25 Aug 2005 17:50:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964894AbVHYVud (ORCPT ); Thu, 25 Aug 2005 17:50:33 -0400 Received: from gateway-1237.mvista.com ([12.44.186.158]:57337 "EHLO av.mvista.com") by vger.kernel.org with ESMTP id S964879AbVHYVub (ORCPT ); Thu, 25 Aug 2005 17:50:31 -0400 Subject: Re: 2.6.13-rc7-rt1 From: Daniel Walker Reply-To: dwalker@mvista.com To: Ingo Molnar Cc: linux-kernel@vger.kernel.org In-Reply-To: <20050825062651.GA26781@elte.hu> References: <20050825062651.GA26781@elte.hu> Content-Type: text/plain Organization: MontaVista Date: Thu, 25 Aug 2005 14:46:13 -0700 Message-Id: <1125006373.10901.11.camel@dhcp153.mvista.com> Mime-Version: 1.0 X-Mailer: Evolution 2.0.2 (2.0.2-3) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Wakeup race checking shouldn't trigger when interrupts are off. Here's a fix. Daniel Index: linux-2.6.12/kernel/rt.c =================================================================== --- linux-2.6.12.orig/kernel/rt.c 2005-08-25 21:33:43.000000000 +0000 +++ linux-2.6.12/kernel/rt.c 2005-08-25 21:44:20.000000000 +0000 @@ -257,6 +257,7 @@ void check_preempt_wakeup(struct task_st * hangs and race conditions. */ if (!preempt_count() && + !__raw_irqs_disabled() && p->prio < current->prio && rt_task(p) && (current->rcu_read_lock_nesting != 0 ||