linux-kernel - Re: [PATCH V3: Add Smp support for Allwinner A20. 1/3] Add smp support for Allwinner A20(sunxi 7i).

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Date:	Mon, 30 Sep 2013 18:47:09 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	cinifr <cinifr@...il.com>
Cc:	coosty@....com, Daniel Lezcano <daniel.lezcano@...aro.org>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mark Rutland <mark.rutland@....com>,
	"pawel.moll@....co" <pawel.moll@....co>,
	Rob Herring <rob.herring@...xeda.com>,
	"linux-sunxi@...glegroups.com" <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH V3: Add Smp support for Allwinner A20. 1/3] Add smp
 support for Allwinner A20(sunxi 7i).

Hi Fan,

On Sat, Sep 28, 2013 at 09:48:11PM +0800, cinifr wrote:
> Hi  Maxime,
>     I have test it, but I found it does not work. If using
> smp_prepare_cpus, the kernenl cannot find the secondary cpus because
> that smp_prepare_cpus semms not be excuted before kernel is booting
> secondary cpus. So I have to use early_initcall.

At least two other platforms (sti and rockchip) do it like that.

And an early_initcall is not an option.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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