linux-kernel - Re: [PATCH 0/5] [GIT PULL] updates for tip/tracing/ftrace

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Date:	Fri, 20 Mar 2009 17:05:58 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
cc:	Ingo Molnar <mingo@...e.hu>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH 0/5] [GIT PULL] updates for tip/tracing/ftrace


On Fri, 20 Mar 2009, Frederic Weisbecker wrote:
> > >  
> > >  	VERBOSE_PRINTK_STRING("rcu_torture_reader task started");
> > > -	set_user_nice(current, 19);
> > > +	set_user_nice(current, -1);
> > >  	if (irqreader && cur_ops->irqcapable)
> > >  		setup_timer_on_stack(&t, rcu_torture_timer, 0);
> > 
> > i dont have a reproducer right now. Can you trigger it with latest 
> > -tip, which has this commit included:
> > 
> > 04cb9ac: rcu: rcu_barrier VS cpu_hotplug: Ensure callbacks in dead cpu are migrated to o
> > 
> > ?
> > 
> > 	Ingo
> 
> 
> I tested three times the same things but with 04cb9ac and... it didn't triggered
> anymore :-)

So lets hope that was the culprit.

Great work Frederic!

-- Steve

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