linux-kernel - Re: [PATCH v2] printk: Avoid softlockups in console

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Message-ID: <alpine.DEB.2.02.1302060958150.26828@chino.kir.corp.google.com>
Date:	Wed, 6 Feb 2013 09:58:48 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Jan Kara <jack@...e.cz>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, jslaby@...e.cz,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH v2] printk: Avoid softlockups in console_unlock()

On Wed, 6 Feb 2013, Jan Kara wrote:

>   Yes, I noticed that thread just yesterday and also though that using
> similar trick might be viable. I'll experiment if we could use the same
> method for handling lockup problems I hit. Steven seems to have already
> tweaked PRINTK_PENDING stuff to be usable more easily...
> 

Are these new build failures in linux-next coming from this patch?

kernel/printk.c: In function 'console_unlock':
kernel/printk.c:2156:18: error: 'printk_work' undeclared (first use in this function)
kernel/printk.c:2156:18: note: each undeclared identifier is reported only once for each function it appears in
kernel/printk.c: At top level:
kernel/printk.c:2167:13: warning: 'printk_worker' defined but not used [-Wunused-function]
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