linux-kernel - Re: lowmemory android driver not needed?

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Date:	Tue, 3 Feb 2009 12:55:21 -0800
From:	Tony Lindgren <tony@...mide.com>
To:	Paul Mundt <lethal@...ux-sh.org>, Greg KH <greg@...ah.com>,
	Trilok Soni <soni.trilok@...il.com>,
	Arve Hj?nnev?g <arve@...roid.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Pavel Machek <pavel@...e.cz>,
	Brian Swetland <swetland@...gle.com>, arve@...gle.com,
	San Mehat <san@...roid.com>, Robert Love <rlove@...gle.com>,
	linux-kernel@...r.kernel.org,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	ext Juha Yrj?l? <juha.yrjola@...idboot.com>,
	viktor.rosendahl@...ia.com
Subject: Re: lowmemory android driver not needed?

* Paul Mundt <lethal@...ux-sh.org> [090116 01:05]:
> On Thu, Jan 15, 2009 at 03:44:04PM -0800, Greg KH wrote:
> > On Thu, Jan 15, 2009 at 07:02:48PM +0530, Trilok Soni wrote:
> > > And there is one more lowmem driver developed by Nokia for Nokia 8xx
> > > tablets it seems. CCed Tony Lindgren,  Juha and Viktor.
> > > 
> > > http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git;a=blob;f=security/lowmem.c;h=ae78a530af39703e335ad769f1e6f097f63ec6dd;hb=HEAD
> > 
> > As we can't stack LSMs, using the lsm interface for a simple memory
> > driver seems pretty wasteful :)
> > 
> The heuristics and tunables are more what ended up being useful with this
> module, which could trivially be abstracted out. The focus of the lowmem
> module was mostly giving userspace an opportunity to change its behaviour,
> and to try to save critical state. I don't know how well this would map
> to the Android use cases, though.

FYI, I've dropped the lowmem.c module from the linux-omap tree
considering the rest of this thread. The commit is
c00b5565aaaefadfe68d7c32d05617c81bb9edff for reference.

Regards,

Tony
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