linux-kernel - Re: Attempted summary of suspend-blockers LKML thread, take three

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Message-ID: <20100811222854.GJ2516@linux.vnet.ibm.com>
Date:	Wed, 11 Aug 2010 15:28:54 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Felipe Contreras <felipe.contreras@...il.com>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, "Ted Ts'o" <tytso@....edu>,
	david@...g.hm, Brian Swetland <swetland@...gle.com>,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	arve@...roid.com, mjg59@...f.ucam.org, pavel@....cz,
	florian@...kler.org, rjw@...k.pl, stern@...land.harvard.edu,
	peterz@...radead.org, tglx@...utronix.de, menage@...gle.com,
	david-b@...bell.net, James.Bottomley@...e.de, arjan@...radead.org,
	swmike@....pp.se, galibert@...ox.com, dipankar@...ibm.com
Subject: Re: Attempted summary of suspend-blockers LKML thread, take three

On Wed, Aug 11, 2010 at 10:18:51PM +0300, Felipe Contreras wrote:
> On Mon, Aug 9, 2010 at 9:16 PM, Paul E. McKenney
> <paulmck@...ux.vnet.ibm.com> wrote:
> > But wouldn't an office suite run as a power-oblivious application on an
> > Android device?  After all, office applications do not need to run when
> > the screen is turned off, so these the applications do not need to use
> > suspend blockers.
> 
> Ideally the system would be suspended even when the screen is on. If
> there are no "trusted" applications running at the same time, then
> openoffice wouldn't load at all. Right?

My understanding is that Android systems in fact do not suspend when
the screen is on, and that most (perhaps all) other systems do not
opportunistically suspend at all.  There has been some speculation about
what a hypothetical Android having a non-volatile display might do,
but as far as I know, this is just speculation.

							Thanx, Paul
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