linux-kernel - Re: [PATCH] module: Fix compile error for ref_module when CONFIG

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Date:	Mon, 6 Aug 2012 17:57:44 +0300
From:	Barbaros Tokaoğlu <barbarost@...il.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] module: Fix compile error for ref_module when
 CONFIG_MODULES is not set

Hi Rusty,

You are right, this was not for something in the kernel. I needed
ref_module to add some sort of dynamic dependency between modules but
this caused compile error when CONFIG_MODULES is not set. Another
option was using #ifdef CONFIG_MODULES check but the way in the patch
seemed correct to me.

However, if ref_module is exported only for ksplice, then you can
ignore this patch.

Thanks,
Barbaros

On Aug 6, 2012, at 9:58 AM, Rusty Russell <rusty@...tcorp.com.au> wrote:

> On Wed, 1 Aug 2012 20:57:07 +0300, Barbaros Tokaoğlu <barbarost@...il.com> wrote:
>> ref_module function is not defined when CONFIG_MODULES is not set thus
>> it causes compile error when a module which is set to be built-in uses it.
>> This patch defines a dummy ref_module function when CONFIG_MODULES
>> is not set.
>>
>> Signed-off-by: Barbaros Tokaoğlu <barbarost@...il.com>
>
> Hi Barbaros,
>
>       It's usually a good idea to paste the error message into the
> commit message for compile fixes: it helps people googling the problem.
>
> In this case, it's particularly important, because I can't find any
> users of ref_module() outside module.c itself: it's only exported for
> ksplice to use.
>
> Cheers,
> Rusty.
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