linux-kernel - Re: [patch] flex_array: export symbols to modules

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Message-ID: <20101202063054.GB3367@linux-sh.org>
Date:	Thu, 2 Dec 2010 15:30:55 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Alex Bennee <kernel-hacker@...nee.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [patch] flex_array: export symbols to modules

On Wed, Dec 01, 2010 at 05:16:05PM -0800, David Rientjes wrote:
> On Wed, 1 Dec 2010, Alex Bennee wrote:
> > I want to be able to use the flex_array functions in my module so I
> > wanted to EXPORT_SYMBOL the API.
> > 
> > I added the appropriate EXPORT_SYMBOL runes into lib/flex_array.c and
> > added externs in the header files but after re-building there is still
> > no sign of them in Module.symvers.
> 
> You shouldn't need to add any externs in include/linux/flex_array.h, they 
> should already be publically declared.
> 
> Perhaps you forgot to include linux/module.h in lib/flex_array.c?
> 
> flex_array: export symbols to modules
> 
> Add EXPORT_SYMBOL() for all publically accessible flex array functions.
> 
> Cc: Dave Hansen <dave@...ux.vnet.ibm.com>
> Signed-off-by: David Rientjes <rientjes@...gle.com>
> ---
>  lib/flex_array.c |   10 ++++++++++
>  1 files changed, 10 insertions(+), 0 deletions(-)
> 
This will be ineffective so long as flex_array.o remains lib-y. It will
need to be moved to obj-y if modules are to also make use of it.
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