linux-kernel - Re: [PATCH v3 08/10] ARM: configs: add MPS2 defconfig

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Date:	Tue, 16 Feb 2016 16:08:34 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Vladimir Murzin <vladimir.murzin@....com>, mark.rutland@....com,
	devicetree@...r.kernel.org, linux@....linux.org.uk,
	pawel.moll@....com, ijc+devicetree@...lion.org.uk,
	gregkh@...uxfoundation.org, daniel.lezcano@...aro.org,
	linux-kernel@...r.kernel.org, robh+dt@...nel.org,
	andy.shevchenko@...il.com, galak@...eaurora.org,
	linux-serial@...r.kernel.org, u.kleine-koenig@...gutronix.de,
	tglx@...utronix.de, linux-api@...r.kernel.org, jslaby@...e.cz
Subject: Re: [PATCH v3 08/10] ARM: configs: add MPS2 defconfig

On Tuesday 16 February 2016 14:51:59 Vladimir Murzin wrote:
> > 
> > Why CONFIG_EMBEDDED? You probably mean CONFIG_EXPERT, but then what do
> > you need that for?
> 
> TBH, I have no special requirement for this option to be set and now,
> looking at Kconfig entry for this option, I think that I got it here
> because I stated configuration with allnoconfig.
> 
> OTOH, I don't see how harmful it can be since description says:
> 
>           This option should be enabled if compiling the kernel for
>           an embedded system so certain expert options are available
>           for configuration
> 
> yes, it selects CONFIG_EXPERT and that had side effect that, for
> example, CONFIG_NAMESPACE could be compiled out.
> 
> Have I missed something around it?

Just the history behind this symbol. We removed it a while ago in
favor if CONFIG_EXPERT, assuming that it makes it clearer that it's
not just for embedded systems, or for systems with small memory.

It's  basically a zombie symbol that nobody should use directly
(independent of what the documentation says...).

	Arnd