linux-kernel - Re: [PATCH] arm/tegra: add support for tegra30 interrupts

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Message-ID: <20111102193947.GD12913@n2100.arm.linux.org.uk>
Date:	Wed, 2 Nov 2011 19:39:47 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Felipe Balbi <balbi@...com>, Nicolas Pitre <nico@...xnic.net>
Cc:	Stephen Warren <swarren@...dia.com>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	Colin Cross <ccross@...roid.com>,
	Olof Johansson <olof@...om.net>, Gary King <gking@...dia.com>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm/tegra: add support for tegra30 interrupts

On Wed, Nov 02, 2011 at 09:26:26PM +0200, Felipe Balbi wrote:
> would it be better to just change the default value in
> arm-generic/gpio.h to something very large ?
> 
> I mean, ideally that wouldn't be gpio_desc wouldn't be an array anyway
> right ?

You'll excuse me if I take this slightly personally.

You really can't expect me to say that I'm fine with a 6K growth in
kernel size for something that not every platform needs if there's
been objections to maybe a 128 byte growth for including the V:P
patching code in the kernel by default.

Either we care about memory usage or we don't.  If we don't, lets get
rid of offering ARM_PATCH_PHYS_VIRT in any configuration and always
build with the dynamic V:P stuff enabled for the trivial cases.  I
mean:

 config ARM_PATCH_PHYS_VIRT
-	bool "Patch physical to virtual translations at runtime" if EMBEDDED
+	bool
	default y
	depends on !XIP_KERNEL && MMU
	depends on !ARCH_REALVIEW || !SPARSEMEM
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