linux-kernel - Re: [GIT PULL] printk: Support for full dynticks mode

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


* Andrew Morton <akpm@...ux-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
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