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

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Date:	Sun, 8 Aug 2010 20:08:33 +0300
From:	Felipe Contreras <felipe.contreras@...il.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	"Ted Ts'o" <tytso@....edu>, david@...g.hm,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Brian Swetland <swetland@...gle.com>,
	kevin granade <kevin.granade@...il.com>,
	"Arve Hj?nnev?g" <arve@...roid.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Arjan van de Ven <arjan@...radead.org>,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	pavel@....cz, florian@...kler.org, stern@...land.harvard.edu,
	peterz@...radead.org, tglx@...utronix.de, alan@...rguk.ukuu.org.uk
Subject: Re: Attempted summary of suspend-blockers LKML thread

On Sun, Aug 8, 2010 at 7:08 PM, Matthew Garrett <mjg59@...f.ucam.org> wrote:
> On Sun, Aug 08, 2010 at 04:35:13PM +0300, Felipe Contreras wrote:
>
>> appropriately; that's not the case.
>>
>> 1) Install a bad application that requests PM permissions and is granted those
>>
>> In this case you've gained nothing with user-space suspend blockers.
>
> It's clearly possible for a pathological Android application to destroy
> the power management policy. But to do that, the author would have to
> explicitly take a wakelock. That's difficult to do by accident.

The writer can take a wakelock the whole time the application is
running (isn't that the typical case?), because perhaps the author
realizes that way the application works correctly, or he copy-pasted
it from somewhere else.

-- 
Felipe Contreras
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