Re: [PATCH 3.8-rc4-nohz3] kvm: Add missing EXPORT_SYMBOL whenCONFIG_KVM=m

From: Steven Rostedt
Date: Wed Jan 23 2013 - 10:04:33 EST


On Wed, 2013-01-23 at 15:02 +0100, Frederic Weisbecker wrote:

> diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
> index bbb2c2c..a13b8a3 100644
> --- a/kernel/context_tracking.c
> +++ b/kernel/context_tracking.c
> @@ -111,14 +111,19 @@ void guest_enter(void)
> else
> __guest_enter();
> }
> +EXPORT_SYMBOL_GPL(guest_enter);
>
> void guest_exit(void)
> {
> +#ifndef CONFIG_KVM
> +i
> +#endif

I don't like #ifdefs in .c files. They belong in headers. Could you
convert this to be:

include/linux/context_tracking.h:

#ifdef CONFIG_KVM
#define add_vi_i_typo()
#else
#define add_vi_i_typo() i
#endif

and then in context_tracking.c:

void guest_exit(void)
{
add_vi_typo();

[...]

-- Steve

> if (vtime_accounting_enabled())
> vtime_guest_exit(current);
> else
> __guest_exit();
> }
> +EXPORT_SYMBOL_GPL(guest_exit);
> #endif


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