linux-kernel - Re: [PATCH 1/4] dynamic_debug: consolidate repetitive struct

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Date:	Thu, 08 Sep 2011 19:13:16 -0700
From:	Joe Perches <joe@...ches.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Jason Baron <jbaron@...hat.com>, gregkh@...e.de,
	jim.cromie@...il.com, bvanassche@....org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] dynamic_debug: consolidate repetitive struct
 _ddebug descriptor definitions

On Thu, 2011-09-08 at 16:52 -0700, Andrew Morton wrote:
> On Tue, 30 Aug 2011 14:28:41 -0400
> Jason Baron <jbaron@...hat.com> wrote:
> > Replace the repetitive struct _ddebug descriptor definitions with
> > a new DECLARE_DYNAMIC_DEBUG_META_DATA(name, fmt) macro.
> > +#define DECLARE_DYNAMIC_DEBUG_METADATA(name, fmt)		\
> > +	static struct _ddebug __used __aligned(8)		\
> > +	__attribute__((section("__verbose"))) name = {		\
> > +		.modname = KBUILD_MODNAME,			\
> > +		.function = __func__,				\
> > +		.filename = __FILE__,				\
> > +		.format = (fmt),				\
> > +		.lineno = __LINE__,				\
> > +		.flags =  _DPRINTK_FLAGS_DEFAULT,		\
> > +		.enabled = false,				\
> > +	}
> <anal>That macro implements a definition, not a declaration</anal>

Andrew, that's not quite true and that's how
DECLARE is normally used in linux.

DECLARE_BITMAP, DECLARE_COMPLETION, DECLARE_RWSEM, etc.

A lot of the DEFINE_FOO(name) macros use ##name.


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