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Date: Fri, 31 Jul 2015 10:08:25 -0700
From: Greg KH <greg@kroah.com>
To: Guenter Roeck <linux@roeck-us.net>
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Cc: Sasha Levin <sasha.levin@oracle.com>,
	"ksummit-discuss@lists.linuxfoundation.org"
	<ksummit-discuss@lists.linuxfoundation.org>
Subject: Re: [Ksummit-discuss] Self nomination
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On Fri, Jul 31, 2015 at 09:59:15AM -0700, Guenter Roeck wrote:
> Hi Bjorn,
> 
> On Fri, Jul 31, 2015 at 11:27:38AM -0500, Bjorn Helgaas wrote:
> > On Thu, Jul 30, 2015 at 9:55 PM, Sasha Levin <sasha.levin@oracle.com> wrote:
> > > Mainly I'd like to talk about improving testing around the kernel, both by catching bugs
> > > and by improving the quality of debug output that comes out of the kernel.
> > 
> > What sort of debug output improvements are you interested in?  I spend
> > a fair amount of time converting to dev_printk and %pR.  They make the
> 
> I have been wondering about that, especially since dev_dbg() and
> 'dev_printk(KERN_DEBUG, ...)' are semantically different. Any reason
> for preferring dev_printk() over dev_dbg() ?

The opposite is true, please always use dev_dbg() as it properly ties
into the overall kernel-wide dynamic debug infrastructure, providing a
unified way to enable/disable debug messages, or even, compiling them
out if none are wanted due to size constraints.

thanks,

greg k-h