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Message-ID: <1339514114.31548.78.camel@twins>
Subject: Re: rcu,sched: spinlock recursion on 3.5-rc2
From: Peter Zijlstra <peterz@infradead.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Sasha Levin <levinsasha928@gmail.com>, Ingo Molnar <mingo@elte.hu>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Dave Jones <davej@redhat.com>
Date: Tue, 12 Jun 2012 17:15:14 +0200
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On Tue, 2012-06-12 at 17:07 +0200, Thomas Gleixner wrote:
> Hmm, not sure. The deadlock was not triggered in switch_to. It was
> just at the beginning of __schedule()
> 
> 
How can you tell? switch_to() is a macro not a function, it won't ever
show up on a stack-trace.. but I think you meant context_switch() but
that typically gets inlined, similar problem.