Re: [PATCH v4 2/2] locking/pvqspinlock, hv: Enable PV qspinlock for Hyper-V

[Ingo Molnar]

* Yi Sun <yi.y....@linux.intel.com> wrote:

> Follow PV spinlock mechanism to implement the callback functions
> to allow the CPU idling and kicking operations on Hyper-V.

> +#if defined(CONFIG_SMP)
> +     smp_ops.smp_prepare_boot_cpu = hv_smp_prepare_boot_cpu;
> +#endif

What's wrong with using the common pattern of:

        #ifdef CONFIG_SMP

?

Thanks,

        Ingo