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Subject: Re: [PATCH v6 1/5] powerpc/85xx: implement hardware timebase sync
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Zhao Chenhui <chenhui.zhao@freescale.com>
Date: Wed, 27 Jun 2012 08:10:34 +1000
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On Tue, 2012-06-26 at 18:25 +0800, Zhao Chenhui wrote:
> Do hardware timebase sync. Firstly, stop all timebases, and transfer
> the timebase value of the boot core to the other core. Finally,
> start all timebases.
> 
> Only apply to dual-core chips, such as MPC8572, P2020, etc.
> 
> Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
> Signed-off-by: Li Yang <leoli@freescale.com>
> ---
> Changes for v6:
>  * added 85xx_TB_SYNC
>  * added isync() after set_tb()
>  * removed extra entries from mpc85xx_smp_guts_ids

What's that CONFIG option for ?

Cheers,
Ben.