linux-kernel - Re: [PATCH v2] module: fix build for CONFIG

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Date:	Thu, 19 Feb 2009 08:32:09 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH v2] module: fix build for CONFIG_SYSFS=n

At Wed, 18 Feb 2009 10:35:20 -0800,
Randy Dunlap wrote:
> 
> > Is destroy_params() dependent on SYSFS? If yes then it would be 
> 
> Yes.
> 
> > far cleaner if there was a NOP destroy_params() inline for the 
> > !SYSFS case.
> 
> 
> 
> 
> From: Randy Dunlap <randy.dunlap@...cle.com>
> 
> Fix this build error when CONFIG_SYSFS=n:
> 
> kernel/built-in.o: In function `free_module':
> module.c:(.text+0x4f8a2): undefined reference to `destroy_params'
> 
> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
> cc: Rusty Russell <rusty@...tcorp.com.au>
> ---
>  kernel/params.c |    6 ++++++
>  1 file changed, 6 insertions(+)
> 
> --- linux-next-20090218.orig/kernel/params.c
> +++ linux-next-20090218/kernel/params.c
> @@ -761,6 +761,12 @@ static int __init param_sysfs_init(void)
>  }
>  subsys_initcall(param_sysfs_init);
>  
> +#else	/* !CONFIG_SYSFS */
> +
> +inline void destroy_params(const struct kernel_param *params, unsigned num)
> +{
> +}

Just wondering whether any need to be (external) inline at this place,
supposing it just to be called from other files.
If inlining, isn't it better in include/linux/moduleparam.h?


thanks,

Takashi
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