linux-kernel - Re: 3.10.5: rcu_sched detected stalls on CPUs/tasks

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Message-ID: <20130911103430.GA1509@pompeji.miese-zwerge.org>
Date:	Wed, 11 Sep 2013 12:34:31 +0200
From:	Jochen Striepe <jochen@...ot.escape.de>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: 3.10.5: rcu_sched detected stalls on CPUs/tasks

	Hello,

On Tue, Sep 10, 2013 at 10:54:53AM -0700, Paul E. McKenney wrote:
> Their stall was due to old-style creation of sysfs entries for memory.
> Yours might be having a similar issue with the creation of /dev entries,
> so it would be worth trying it.

OK, compiling 3.10.11 with your patch right now.

> One thing to try would be to insert delays into the code involved in
> creating the /dev entries.  These delays will need to be busy-waits
> rather than sleeps.

Uh, I will have a look. But I'm no kernel developer. :)

Best greetings,
Jochen.
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