Re: [PATCH RFC v6 02/21] dept: Implement Dept(Dependency Tracker)

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On Wed, May 04, 2022 at 05:17:30PM +0900, Byungchul Park wrote:
> CURRENT STATUS
> +/*

[...]

> + * Ensure it has been called on ON/OFF transition.
> + */
> +void dept_enirq_transition(unsigned long ip)
> +{
> +	struct dept_task *dt = dept_task();
> +	unsigned long flags;
> +
> +	if (unlikely(READ_ONCE(dept_stop) || in_nmi()))
> +		return;
> +
> +	/*
> +	 * IRQ ON/OFF transition might happen while Dept is working.
> +	 * We cannot handle recursive entrance. Just ingnore it.
> +	 * Only transitions outside of Dept will be considered.
> +	 */
> +	if (dt->recursive)
> +		return;
> +
> +	flags = dept_enter();
> +
> +	enirq_update(ip);
> +
> +	dept_exit(flags);
> +}

EXPORT_SYMBOL_GPL(dept_enirq_transition);

ERROR: modpost: "dept_enirq_transition" [arch/x86/kvm/kvm-amd.ko] undefined!
ERROR: modpost: "dept_enirq_transition" [arch/x86/kvm/kvm-intel.ko] undefined!

This function needs to be exported for modules.

Thanks.

-- 
Thanks,
Hyeonggon



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