linux-kernel - Re: [PATCH v6 1/5] powerpc/85xx: implement hardware timebase sync

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Date:	Thu, 28 Jun 2012 20:50:51 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Zhao Chenhui <chenhui.zhao@...escale.com>
Cc:	linuxppc-dev@...ts.ozlabs.org, scottwood@...escale.com,
	linux-kernel@...r.kernel.org, leoli@...escale.com
Subject: Re: [PATCH v6 1/5] powerpc/85xx: implement hardware timebase sync

On Thu, 2012-06-28 at 11:38 +0800, Zhao Chenhui wrote:
> 
> 
> The bootloader have done a timebase sync. If we do not need KEXEC or
> HOTPLUG_CPU feature, it is unnecessary to do it again at boot time of
> kernel. I only compile the timebase sync routines
> when users enable KEXEC or HOTPLUG_CPU. 

Still, how much are you really saving ? Is it worth the added mess and
loss of test coverage ?

We have too many conditional stuff like that already.

Cheers,
Ben.


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