linux-kernel - Re: [PATCH 1/8] PM: Opportunistic suspend support.

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Date:	Thu, 27 May 2010 00:10:41 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Florian Mickler <florian@...kler.org>
Cc:	Pavel Machek <pavel@....cz>,
	James Bottomley <James.Bottomley@...e.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	"Arve Hj?nnev?g" <arve@...roid.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"Linux-pm mailing list" <linux-pm@...ts.linux-foundation.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	Len Brown <len.brown@...el.com>,
	Randy Dunlap <rdunlap@...otime.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Cornelia Huck <cornelia.huck@...ibm.com>,
	Tejun Heo <tj@...nel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Nigel Cunningham <nigel@...onice.net>,
	Ming Lei <tom.leiming@...il.com>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Maxim Levitsky <maximlevitsky@...il.com>,
	linux-doc@...r.kernel.org, Matthew Garrett <mjg59@...f.ucam.org>,
	Greg KH <gregkh@...e.de>, tytso@....edu
Subject: Re: [PATCH 1/8] PM: Opportunistic suspend support.

On Wednesday 26 May 2010, Florian Mickler wrote:
> On Wed, 26 May 2010 19:28:24 +0200
> Pavel Machek <pavel@....cz> wrote:
> 
> 
> > Besides that it is not linux system at all?
> 
> I believe the kernel to be a layer between userspace and hardware. What
> business is it to the kernel if it runs whatever android
> uses as init process or /bin/bash, sys-v-init or systemd?
> 
> There is this thing called choice. 
> 
> > 
> > Yes, with custom userspace it works extremely nicely.
> > 
> > Had anyone even tried running oportunistic suspend on normal desktop?
> > 									Pavel
> 
> I don't think this is a valid concern. Just because current linux/gnu
> systems don't implement the userspace part of this interface doesn't
> mean it is useless or broken. 

Agreed.

BTW, this is a valid point.  We are used to think about Linux as the kernel
plus the GNU user space, but that's not how it has to be.

Thanks,
Rafael
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