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: <1342499648.24525.17.camel@gandalf.stny.rr.com>
Date:	Tue, 17 Jul 2012 00:34:08 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mike Galbraith <efault@....de>
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 00:27 -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()

-- Steve
 


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