linux-kernel - Re: [PATCH] staging: ozwpan: Convert printk to dev

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Message-ID: <1372183389.1245.74.camel@joe-AO722>
Date:	Tue, 25 Jun 2013 11:03:09 -0700
From:	Joe Perches <joe@...ches.com>
To:	Greg KH <gregkh@...uxfoundation.org>,
	Jason Baron <jbaron@...mai.com>
Cc:	shigekatsu.tateno@...el.com, devel@...uxdriverproject.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: ozwpan: Convert printk to dev_dbg()

(Using Jason Baron's most current email address)

On Tue, 2013-06-25 at 10:56 -0700, Joe Perches wrote:
> On Tue, 2013-06-25 at 10:38 -0700, Greg KH wrote:
> > On Tue, Jun 25, 2013 at 10:29:50AM -0700, Joe Perches wrote:
> > > a long needed extension to dev_dbg is to enable classes
> > > of messages by level or mask.
> > > 
> > > There are many existing macros like
> > > 
> > > #define module_dbg(level, fmt, ...)
> > > do {
> > > 	if (level >= some_module_var)
> > > 		debug_something(...);
> > > } while (0)
> > > 
> > > and
> > > 
> > > #define module_dbg(mask, fmt, ...)
> > > do {
> > > 	if (mask & some_module_var)
> > > 		debug_something(...)
> > > } while (0)
> > > 
> > > It'd be nice to consolidate those in dev_dbg
> > 
> > I'd almost recommend that all of them just be removed, because most of
> > them were only used for debugging the code the first time it was
> > developed, right?  Only for very limited usages would this type of thing
> > be needed.
> 
> Maybe, though that's hard to know with certainty.
> How often module options are used isn't easy to find out.
> 
> These forms are sometimes used to reduce object size.

Hey Jason.  Your redhat.com address is out of date.

If you're still interested in dynamic_debug, you should
update your MAINTAINERS entry.


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