linux-kernel - Re: [PATCH] printk deadlocks if called with runqueue lock held

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Message-ID: <Pine.LNX.4.58.0801231335450.9982@gandalf.stny.rr.com>
Date:	Wed, 23 Jan 2008 13:36:12 -0500 (EST)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Pavel Machek <pavel@....cz>
cc:	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alexey Dobriyan <adobriyan@...nvz.org>,
	Kirill Korotaev <dev@...ru>
Subject: Re: [PATCH] printk deadlocks if called with runqueue lock held



On Wed, 23 Jan 2008, Pavel Machek wrote:
>
> Could try_to_wakeup use trylock, and only avoid wakeup if lock is
> already held?
> 							Pavel

I could imagine a lot of missed wakeups caused by that.

-- Steve

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