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

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Date:	Tue, 17 Aug 2010 15:07:07 +0300
From:	Igor Stoppa <igor.stoppa@...ia.com>
To:	"ext Rafael J. Wysocki" <rjw@...k.pl>
Cc:	James Bottomley <James.Bottomley@...e.de>,
	"david@...g.hm" <david@...g.hm>, "Ted Ts'o" <tytso@....edu>,
	"peterz@...radead.org" <peterz@...radead.org>,
	Brian Swetland <swetland@...gle.com>,
	Felipe Contreras <felipe.contreras@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"swmike@....pp.se" <swmike@....pp.se>,
	"galibert@...ox.com" <galibert@...ox.com>,
	"florian@...kler.org" <florian@...kler.org>,
	"linux-pm@...ts.linux-foundation.org" 
	<linux-pm@...ts.linux-foundation.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>,
	"menage@...gle.com" <menage@...gle.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	"arjan@...radead.org" <arjan@...radead.org>
Subject: Re: [linux-pm] Attempted summary of suspend-blockers LKML thread,
 take three

Hi,
On Mon, 2010-08-16 at 23:11 +0200, ext Rafael J. Wysocki wrote:
> On Saturday, August 14, 2010, James Bottomley wrote:

<snip>

> > > The question, then, is whether a solution which addresses the only
> > > part of the problem which Rafael is interested in dealing with at this
> > > point, is sufficient such that (a) the kernel-level opportunistic
> > > suspend can be done as an out-of-tree patch, while simultaneously (b)
> > > allowing device drivers for Android devices can utilize Rafael's
> > > interfaces to solve the race design bug currently found in our suspend
> > > subsystem, while (c) requiring minimal changes to the Android
> > > userspace, and (d) providing all of the statistics and debugging
> > > functionality required by the Android userspace.
> > > 
> > > If we can engineer a solution which meets (a), (b), (c), and (d)
> > > above, then everyone will be happy.
> > 
> > That's my goal.
> 
> In fact, we (which means basically Alan Stern and me at this point) are working
> with Arve on this right now.

At least for (d) we - Nokia - would be also interested as well to
contribute, see [1].

In general it should help with keeping the solution more generic.

cheers, igor

[1]
https://lists.linux-foundation.org/pipermail/linux-pm/2010-August/028248.html

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