[PATCH] powerpc: check_and_cede_processor never cedes

[Benjamin Herrenschmidt]

On Thu, 2012-06-28 at 08:45 +1000, Anton Blanchard wrote:
>  	hard_irq_disable();
> -	if (get_paca()->irq_happened == 0)
> +	if (get_paca()->irq_happened == PACA_IRQ_HARD_DIS)
>  		cede_processor();

I'd rather add a helper, something like lazy_irq_pending()
and hide the actual check for the bits in irq_happened, in
case we change the scheme again.

Something like:

static inline bool lazy_irq_pending(void)
{
	return !!(get_paca()->irq_happened & ~PACA_IRQ_HARD_DIS);
}

Cheers,
Ben.