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

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Date:	Wed, 27 Jun 2012 08:10:34 +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
Subject: Re: [PATCH v6 1/5] powerpc/85xx: implement hardware timebase sync

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@...escale.com>
> Signed-off-by: Li Yang <leoli@...escale.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.


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