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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
Date: Tue, 5 Feb 2013 13:05:32 +0100	[thread overview]
Message-ID: <20130205120532.GA21455@gmail.com> (raw)
In-Reply-To: <20130204200459.f2a0a1cc.akpm@linux-foundation.org>


* 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

  reply	other threads:[~2013-02-05 12:05 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-05  0:51 [GIT PULL] printk: Support for full dynticks mode Frederic Weisbecker
2013-02-05  1:20 ` Andrew Morton
2013-02-05  1:22   ` Steven Rostedt
2013-02-05  1:37   ` Frederic Weisbecker
2013-02-05  2:09     ` Andrew Morton
2013-02-05  2:42       ` Steven Rostedt
2013-02-05  4:04         ` Andrew Morton
2013-02-05 12:05           ` Ingo Molnar [this message]
2013-02-05  3:14       ` Steven Rostedt
2013-02-05  3:19         ` Frederic Weisbecker
2013-02-05  3:24           ` Steven Rostedt
2013-02-05  3:29             ` Steven Rostedt
2013-02-05 12:13 ` Ingo Molnar

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