linux-kernel - Re: [ofa-general] Re: [PATCH 10/14] infiniband: use printk

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Date:	Mon, 10 Aug 2009 10:42:18 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	Jack Morgenstein <jackm@....mellanox.co.il>
Cc:	general@...ts.openfabrics.org,
	Marcin Slusarz <marcin.slusarz@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [ofa-general] Re: [PATCH 10/14] infiniband: use printk_once


 > I'm a bit nervous about this one.  
 > printk_once will print once ONLY if CONFIG_PRINTK is set in include/linux/autoconf.h
 > (i.e., when the kernel is configured).  Otherwise, it gets defined to printk --
 > and it will always print in this case.
 > (see 2.6.30.xx kernel include file "include/linux/kernel.h", lines 235, 249, and 272).

Umm... if CONFIG_PRINTK is turned off nothing prints, right?

 > Do you think that distributions will ALWAYS have CONFIG_PRINTK defined?

Yes, I suspect they do want to get kernel messages.

 - R.
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