From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Subject: Re: [PATCH v3 05/12] arm64, acpi, numa: NUMA support based on SRAT
 and SLIT
Date: Tue, 2 Feb 2016 17:00:43 +0000
Message-ID: <20160202170043.GA30358@red-moon>
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To: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Robert Richter <robert.richter@caviumnetworks.com>, Hanjun Guo <guohanjun@huawei.com>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Will Deacon <will.deacon@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>, Shannon Zhao <shannon.zhao@linaro.org>, Steve Capper <steve.capper@linaro.org>, Mark Rutland <mark.rutland@arm.com>
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On Tue, Feb 02, 2016 at 07:30:12PM +0800, Hanjun Guo wrote:

[...]

> >How about the following (similar to x86)?
> >
> >----
> >	if (!numa_off) {
> >#ifdef CONFIG_ACPI_NUMA
> >		if (!numa_init(acpi_numa_init))
> >			return 0;
> >#endif
> >#ifdef CONFIG_OF_NUMA
> >		if (!numa_init(of_numa_init))
> >			return 0;
> >#endif
> >	}
> >
> >	return numa_init(dummy_numa_init);
> >----
> >
> >Pretty straight and nice.
> >
> >Note: The !acpi_disabled check needs to be moved to the beginning of
> >acpi_numa_init(). Variable ret can be removed.
> 
> Lorenzo suggested to remove it, Lorenzo, what's your opinion here?

I do not think it is a big deal. OF is not a fall-back for ACPI,
which is what the code above may make us think, either you parse
ACPI or you parse DT.

I will have a look at the complete code to check if we can rewrite
it differently but I would not be too worried about it.

Lorenzo