linux-kernel - Re: [PATCH] xen-blkback: define pr_fmt macro to avoid the duplication of DRV

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Date:	Tue, 31 Mar 2015 09:53:11 -0700
From:	Joe Perches <joe@...ches.com>
To:	Roger Pau Monné <roger.pau@...rix.com>
Cc:	Tao Chen <boby.chen@...wei.com>, konrad.wilk@...cle.com,
	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
	wu.wubin@...wei.com, rudy.zhangmin@...wei.com
Subject: Re: [PATCH] xen-blkback: define pr_fmt macro to avoid the
 duplication of DRV_PFX

On Tue, 2015-03-31 at 16:57 +0200, Roger Pau Monné wrote:
> El 31/03/15 a les 23.14, Tao Chen ha escrit:
> > Define pr_fmt macro with {xen-blkback: } prefix, then remove all use
> > of DRV_PFX in the pr and DPRINTK sentences. It will simplify the code.
[]
> > diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
[]
> > @@ -14,6 +14,11 @@
> >  
> >  */
> >  
> > +#define pr_fmt(fmt) "xen-blkback: " fmt
> > +#define DPRINTK(fmt, args...)			\
> > +	pr_debug("(%s:%d) " fmt ".\n",		\
> > +		__func__, __LINE__, ##args)

As dynamic debug can emit __func__ and __LINE__
I suggest converting DPRINTK to pr_debug.


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