linux-kernel - Re: [PATCH] kvm: make asm-generic/kvm_para.h have an ifdef __KERNEL_

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Date:	Fri, 18 May 2012 20:42:17 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:	kvm@...r.kernel.org, Avi Kivity <avi@...hat.com>,
	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kvm: make asm-generic/kvm_para.h have an ifdef
	__KERNEL__ block

On Fri, May 18, 2012 at 01:59:39PM -0400, Paul Gortmaker wrote:
> There are two functions in this asm-generic file.  Looking at
> other arch which do not use the generic version, these two fcns
> are within an #ifdef __KERNEL__ block, so make the generic one
> consistent with those.
> 
> Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
> 
> diff --git a/include/asm-generic/kvm_para.h b/include/asm-generic/kvm_para.h
> index 9a7bbad..5cba37f 100644
> --- a/include/asm-generic/kvm_para.h
> +++ b/include/asm-generic/kvm_para.h
> @@ -1,6 +1,7 @@
>  #ifndef _ASM_GENERIC_KVM_PARA_H
>  #define _ASM_GENERIC_KVM_PARA_H
>  
> +#ifdef __KERNEL__
>  
>  /*
>   * This function is used by architectures that support kvm to avoid issuing
> @@ -16,4 +17,6 @@ static inline unsigned int kvm_arch_para_features(void)
>  	return 0;
>  }
>  
> +#endif	/* _KERNEL__ */
> +
>  #endif

I do not have this file in my tree...
But in general we should try to separate out exporeted stuff in their own headers,
so no new files should ever use __KERNEL__.

Either everything or nothing is exported.

	Sam
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