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

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Message-ID: <20100526174258.GF9069@elf.ucw.cz>
Date:	Wed, 26 May 2010 19:42:58 +0200
From:	Pavel Machek <pavel@....cz>
To:	James Bottomley <James.Bottomley@...e.de>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Arve Hj?nnev?g <arve@...roid.com>,
	Florian Mickler <florian@...kler.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	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.

Hi!

> > > > The main and most important one being that suspend is a global property
> > > > and can/will hurt sensible tasks. It puts the whole task model upside
> > > > down.
> > > 
> > > OK, so I believe you have an android phone ... it already implements
> > > this model ... specifically what are the problems on that platform this
> > > causes?
> > 
> > I do not have one, nor have I ever written an application for it (nor
> > will I likely ever do that, since I detest Java), but I would expect an
> > application to run when its runnable.
> 
> OK, so I've got one ... tell me what I should see and I'll try to
> reproduce.

Umm... try to boot ordinary distro and see how it copes with
opportunistic suspend?

I do have android here, and of course it work well with custom
userland. Question is: can common distro be reasonably modified to
work with suspend blockers, in a way that's backward compatible?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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