linux-kernel - Re: [patch 20/20] XEN-paravirt: Add Xen virtual block device driver.

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Message-ID: <20070114074308.GC10585@kroah.com>
Date:	Sat, 13 Jan 2007 23:43:08 -0800
From:	Greg KH <greg@...ah.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	virtualization@...ts.osdl.org, xen-devel@...ts.xensource.com,
	Ian Pratt <ian.pratt@...source.com>,
	Christian Limpach <Christian.Limpach@...cam.ac.uk>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [patch 20/20] XEN-paravirt: Add Xen virtual block device driver.

On Sat, Jan 13, 2007 at 05:07:28PM -0800, Arjan van de Ven wrote:
> > +
> > +#define DPRINTK(_f, _a...) pr_debug(_f, ## _a)
> 
> why this silly abstraction? Just use pr_debug in the code directly

Actually, for drivers, like this one, you should use the dev_printk()
and friends (dev_dbg, dev_err, etc.) instead so that userspace knows
exactly which device and driver the message comes from.

thanks,

greg k-h
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