On Wed, 2015-04-01 at 09:05 +0200, Alessandro Zummo wrote:
> On Tue, 31 Mar 2015 20:18:28 -0700
> Joe Perches <joe@perches.com> wrote:
> 
> > Neither __func__ or __FILE__ is really useful here.
> > The message is already specific enough without it.
> > 
> > If anything, it'd probably be better to add
> > 
> > #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> 
>  Seems reasonable given that pr_fmt is widely
>  used elsewhere.
> 
>  I don't like too much the need to have one define for
>  each file, but it's the way it works :-/

True.  Right now.

I've a desire to make a change one day so that's
the default instead of blank.

http://comments.gmane.org/gmane.linux.kernel/1052288

There are some remaining treewide complications
before that can be done effectively though.

A few files will need "#define pr_fmt(fmt) fmt"
so no prefix is used.