linux-kernel - Re: [PATCH 2/4] mm: cma: Contiguous Memory Allocator added

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Date:	Wed, 21 Jul 2010 11:58:08 -0700
From:	Daniel Walker <dwalker@...eaurora.org>
To:	Michał Nazarewicz <m.nazarewicz@...sung.com>
Cc:	linux-mm@...ck.org, Marek Szyprowski <m.szyprowski@...sung.com>,
	Pawel Osciak <p.osciak@...sung.com>,
	Xiaolin Zhang <xiaolin.zhang@...el.com>,
	Hiremath Vaibhav <hvaibhav@...com>,
	Robert Fekete <robert.fekete@...ricsson.com>,
	Marcus Lorentzon <marcus.xm.lorentzon@...ricsson.com>,
	linux-kernel@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 2/4] mm: cma: Contiguous Memory Allocator added

On Wed, 2010-07-21 at 20:38 +0200, Michał Nazarewicz wrote:
> > On Wed, 2010-07-21 at 20:11 +0200, Michał Nazarewicz wrote:
> >> Not really.  This will probably be used mostly on embedded systems
> >> where users don't have much to say as far as hardware included on the
> >> platform is concerned, etc.  Once a phone, tablet, etc. is released
> >> users will have little need for customising those strings.
> 
> On Wed, 21 Jul 2010 20:19:08 +0200, Daniel Walker <dwalker@...eaurora.org> wrote:
> > You can't assume that user won't want to reflash their own kernel on the
> > device. Your assuming way too much.
> 
> If user is clever enough to reflash a phone she will find the strings
> easy especially that they are provided from: (i) bootloader which is
> even less likely to be reflashed and if someone do reflash bootloader
> she is a guru who'd know how to make the strings; or (ii) platform
> defaults which will be available with the rest of the source code
> for the platform.

Your, again, assuming all sorts of stuff .. On my phone for example it
is very easy to reflash, personally, I think most devices will be like
that in the future. so you don't _need_ to be clever to reflash the
device.

> > If you assume they do want their own kernel then they would need this
> > string from someplace. If your right and this wouldn't need to change,
> > why bother allowing it to be configured at all ?
> 
> Imagine a developer who needs to recompile the kernel and reflash the
> device each time she wants to change the configuration...  Command line
> arguments seems a better option for development.

So make it a default off debug configuration option ..

Daniel

-- 
Sent by an consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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