linux-kernel - Re: [RFD] Automatic suspend

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Message-ID: <20090218151529.GB15195@srcf.ucam.org>
Date:	Wed, 18 Feb 2009 15:15:29 +0000
From:	Matthew Garrett <mjg@...hat.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Brian Swetland <swetland@...gle.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Woodruff, Richard" <r-woodruff2@...com>,
	Alan Stern <stern@...land.harvard.edu>,
	Kyle Moffett <kyle@...fetthome.net>,
	Oliver Neukum <oliver@...kum.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Arve Hjønnevåg <arve@...roid.com>,
	Pavel Machek <pavel@....cz>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	mark gross <mgross@...ux.intel.com>,
	Uli Luckas <u.luckas@...d.de>,
	Igor Stoppa <igor.stoppa@...ia.com>,
	Len Brown <lenb@...nel.org>
Subject: Re: [RFD] Automatic suspend

On Tue, Feb 17, 2009 at 06:56:22AM -0800, Arjan van de Ven wrote:

> so use range timers / timer slack for those apps that you do not trust.
> That is not a big deal, and solves the issue of timer wakeups...

So have userspace say something like "The screen is turned off now, 
change the timer precision on all untrusted userland to sub 10 seconds"? 
That would work.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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