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Date: Wed, 10 Oct 2018 10:25:36 +0800
From: Yi Sun <yi.y.sun@...ux.intel.com>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org, tglx@...utronix.de,
jgross@...e.com, chao.p.peng@...el.com, chao.gao@...el.com,
isaku.yamahata@...el.com, michael.h.kelley@...rosoft.com,
tianyu.lan@...rosoft.com, "K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Stephen Hemminger <sthemmin@...rosoft.com>
Subject: Re: [PATCH v4 2/2] locking/pvqspinlock, hv: Enable PV qspinlock for
Hyper-V
On 18-10-09 12:54:27, Ingo Molnar wrote:
>
> * Yi Sun <yi.y.sun@...ux.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
>
> ?
There is no difference between "#ifdef" and "#if defined". I just copied
it from "hv_smp_prepare_boot_cpu()". Do you need me submit a fix patch
after this set is merged?
>
> Thanks,
>
> Ingo
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