From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <shemminger@vyatta.com>
Subject: Re: [PATCH net-next 2/2] net: ipv4 and ipv6: Convert
 printk(KERN_DEBUG to pr_debug
Date: Tue, 15 May 2012 18:35:36 -0700
Message-ID: <20120515183536.2cac1e29@nehalam.linuxnetplumber.net>
References: <cover.1337126962.git.joe@perches.com>
	<1fd8285e798ec9b3817c790a67b2bb655ffc931b.1337126963.git.joe@perches.com>
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Cc: "David S. Miller" <davem@davemloft.net>,
	Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
	James Morris <jmorris@namei.org>,
	Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
	Patrick McHardy <kaber@trash.net>, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
To: Joe Perches <joe@perches.com>
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In-Reply-To: <1fd8285e798ec9b3817c790a67b2bb655ffc931b.1337126963.git.joe@perches.com>
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On Tue, 15 May 2012 17:11:54 -0700
Joe Perches <joe@perches.com> wrote:

> Use the current debugging style and enable dynamic_debug.
> 
> Signed-off-by: Joe Perches <joe@perches.com>

This changes the action of the system. By default:
  printk(KERN_DEBUG "foo\n");
is enabled all the time and prints to log with debug level.

But your version
  pr_debug("foo\n");
defaults to being dropped until the system is built with dynamic
debug, and that particular debug instance is enabled.

Since these are all useful, but low priority messages, not I
don't think disabling them by default is such a great idea now.