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Date: Tue, 5 Feb 2013 13:05:32 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Paul Gortmaker <paul.gortmaker@windriver.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [GIT PULL] printk: Support for full dynticks mode
Message-ID: <20130205120532.GA21455@gmail.com>
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* Andrew Morton <akpm@linux-foundation.org> wrote:

> So what deadlocks was the March 2012 3ccf3e830 ("printk/sched: 
> Introduce special printk_sched() for those awkward moments") 
> supposed to fix? [...]

The wakeup in:

static int console_trylock_for_printk(unsigned int cpu)
...
        if (wake)
                up(&console_sem);

Thanks,

	Ingo