linux-kernel - Re: [PATCH, v2] Xen: consolidate and simplify struct xenbus

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Message-Id: <4EF327E2020000780006993E@nat28.tlf.novell.com>
Date:	Thu, 22 Dec 2011 11:51:46 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Ian Campbell" <Ian.Campbell@...rix.com>
Cc:	"Konrad Rzeszutek Wilk" <konrad@...nok.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"dmitry.torokhov@...il.com" <dmitry.torokhov@...il.com>,
	"FlorianSchandinat@....de" <FlorianSchandinat@....de>,
	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"Jens Axboe" <axboe@...nel.dk>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH, v2] Xen: consolidate and simplify struct
 xenbus_driver instantiation

>>> On 22.12.11 at 10:57, Ian Campbell <Ian.Campbell@...rix.com> wrote:
> On Thu, 2011-12-22 at 09:08 +0000, Jan Beulich wrote:
>> The 'name', 'owner', and 'mod_name' members are redundant with the
>> identically named fields in the 'driver' sub-structure. Rather than
>> switching each instance to specify these fields explicitly, introduce
>> a macro to simplify this.
>> 
>> Eliminate further redundancy by allowing the drvname argument to
>> DEFINE_XENBUS_DRIVER() to be blank (in which case the first entry from
>> the ID table will be used for .driver.name).
> 
> Any reason not to always use DRV_NAME here (which is generally a bit
> more specific e.g. "xen-foofront" rather than "foo") and rely on the id
> table for the shorter names used in xenstore?

That would imply that DRV_NAME is always defined, but I don't
see this being the case.

Jan

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