linux-kernel - Re: linux-next: Tree for April 14 (Call-traces: RCU/ACPI/WQ related?)

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Message-ID: <20110426113113.GH4308@linux.vnet.ibm.com>
Date:	Tue, 26 Apr 2011 04:31:13 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	sedat.dilek@...il.com, Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: Tree for April 14 (Call-traces: RCU/ACPI/WQ
 related?)

On Tue, Apr 26, 2011 at 12:06:57PM +0200, Peter Zijlstra wrote:
> On Sun, 2011-04-24 at 09:43 -0700, Paul E. McKenney wrote:
> > 
> > Peter, any thoughts on what I might have done wrong to get the scheduler
> > into a state where it was ignoring a runnable realtime task? 
> 
> Not really, the only thing I can think of is something like poking at
> task->state while its sleeping. One you set it to TASK_RUNNING wakeups
> will be ignored since its already running ;-)

Well, that does give my something to check for -- thank you!

							Thanx, Paul
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