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

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Message-ID: <alpine.DEB.2.00.1008050706170.25170@asgard.lang.hm>
Date:	Thu, 5 Aug 2010 07:07:06 -0700 (PDT)
From:	david@...g.hm
To:	Matthew Garrett <mjg59@...f.ucam.org>
cc:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Arve Hjønnevåg <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,
	swetland@...gle.com, peterz@...radead.org, tglx@...utronix.de,
	alan@...rguk.ukuu.org.uk
Subject: Re: Attempted summary of suspend-blockers LKML thread

On Thu, 5 Aug 2010, Matthew Garrett wrote:

> On Wed, Aug 04, 2010 at 04:19:20PM -0700, david@...g.hm wrote:
>
>> only consider the activity of a subset of processes when deciding if we
>> should suspend or not. If the decision is to suspend, freeze everything.
>>
>> you (and many other people) are confusing what I've proposed (use cgroups
>> to indicate what processes to care about and what ones to not care about
>> when deciding to suspend/go to idle) with the prior cgroup proposal (use
>> cgroups to freeze a subset of tasks while leaving others runnable)
>
> The decision on whether or not to go to sleep isn't the difficult bit of
> this problem space.

but isn't that all that wakelocks do? affect the decision on whether or 
not to go to sleep.

David Lang
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