From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fernando Lopez-Lezcano Subject: Re: [ANNOUNCE] 3.0-rt6 Date: Thu, 04 Aug 2011 12:05:12 -0700 Message-ID: <4E3AED68.5060506@ccrma.stanford.edu> References: <4E3A3D7C.6050403@localhost> <1312450965.16729.7.camel@twins> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Thomas Gleixner , LKML , linux-rt-users , "Paul E. McKenney" , Fernando Lopez-Lezcano To: Peter Zijlstra Return-path: Received: from smtp4.Stanford.EDU ([171.67.219.84]:58054 "EHLO smtp.stanford.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754540Ab1HDTFP (ORCPT ); Thu, 4 Aug 2011 15:05:15 -0400 In-Reply-To: <1312450965.16729.7.camel@twins> Sender: linux-rt-users-owner@vger.kernel.org List-ID: Was going to try this but it appears it is in rt7, trying to build rt7 fails with: ERROR: "of_find_property" [drivers/tty/serial/of_serial.ko] undefined! ERROR: "of_find_property" [drivers/hwmon/ltc4245.ko] undefined! -- Fernando On 08/04/2011 02:42 AM, Peter Zijlstra wrote: > On Wed, 2011-08-03 at 23:34 -0700, Fernando Lopez-Lezcano wrote: >> [ 117.026009] [] _raw_spin_lock+0x45/0x79 >> [ 117.026009] [] ? __run_posix_cpu_timers+0x8f/0x353 >> [ 117.026009] [] __run_posix_cpu_timers+0x8f/0x353 > > I think its this one, could you confirm? > > --- > Index: linux-2.6/kernel/posix-cpu-timers.c > =================================================================== > --- linux-2.6.orig/kernel/posix-cpu-timers.c > +++ linux-2.6/kernel/posix-cpu-timers.c > @@ -1288,10 +1288,11 @@ static inline int fastpath_timer_check(s > sig = tsk->signal; > if (sig->cputimer.running) { > struct task_cputime group_sample; > + unsigned long flags; > > - raw_spin_lock(&sig->cputimer.lock); > + raw_spin_lock_irqsave(&sig->cputimer.lock, flags); > group_sample = sig->cputimer.cputime; > - raw_spin_unlock(&sig->cputimer.lock); > + raw_spin_unlock_irqrestore(&sig->cputimer.lock, flags); > > if (task_cputime_expired(&group_sample,&sig->cputime_expires)) > return 1; >