From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: lowmemory android driver not needed? Date: Tue, 3 Feb 2009 12:55:21 -0800 Message-ID: <20090203205518.GI7215@atomide.com> References: <20090114035237.GB16442@kroah.com> <20090114104307.GA20451@elf.ucw.cz> <20090114104834.18387fca@lxorguk.ukuu.org.uk> <20090114231739.GB24111@kroah.com> <20090115001224.GC11328@kroah.com> <5d5443650901150532r20a4c25q834afadde2f98a3@mail.gmail.com> <20090115234404.GA20142@kroah.com> <20090116090210.GB7039@linux-sh.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mho-01-bos.mailhop.org ([63.208.196.178]:63358 "EHLO mho-01-bos.mailhop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751936AbZBCUzf (ORCPT ); Tue, 3 Feb 2009 15:55:35 -0500 Content-Disposition: inline In-Reply-To: <20090116090210.GB7039@linux-sh.org> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Paul Mundt , Greg KH , Trilok Soni , Arve Hj?nnev?g , Alan Cox , Pavel * Paul Mundt [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