linux-kernel - Re: 3.4.4-rt13: btrfs + xfstests 006 = BOOM.. and a bonus rt_mutex deadlock report for absolutely free!

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Message-ID: <1342500374.7353.47.camel@marge.simpson.net>
Date:	Tue, 17 Jul 2012 06:46:14 +0200
From:	Mike Galbraith <efault@....de>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Chris Mason <chris.mason@...ionio.com>,
	"Chris L. Mason" <clmason@...ionio.com>,
	"linux-rt-users@...r.kernel.org" <linux-rt-users@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: 3.4.4-rt13: btrfs + xfstests 006 = BOOM..  and a bonus rt_mutex
 deadlock report for absolutely free!

On Tue, 2012-07-17 at 00:34 -0400, Steven Rostedt wrote: 
> On Tue, 2012-07-17 at 00:27 -0400, Steven Rostedt wrote:
> 
> > Actually, I was mistaken. I forgot that we defined 'cpu_chill()' as
> > msleep(1) on RT, which would keep a deadlock from happening.
> 
> Perhaps cpu_chill() isn't a good name, as it doesn't really explain what
> is happening. Perhaps one of the following?
> 
>   cpu_rest()
>   cpu_sleep()
>   cpu_deep_relax()
>   cpu_dream()
>   cpu_hypnotize()

(   cpu_waste_truckloads_of_time();)

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