linux-kernel - Re: [PATCH 0/8] Suspend block api (version 6)

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Date:	Tue, 11 May 2010 10:48:58 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Matthew Garrett <mjg@...hat.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Arve Hjønnevåg <arve@...roid.com>,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	Alan Stern <stern@...land.harvard.edu>,
	Tejun Heo <tj@...nel.org>, Oleg Nesterov <oleg@...hat.com>,
	Paul Walmsley <paul@...an.com>, magnus.damm@...il.com,
	mark gross <mgross@...ux.intel.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Geoff Smith <geoffx.smith@...el.com>,
	Brian Swetland <swetland@...gle.com>
Subject: Re: [PATCH 0/8] Suspend block api (version 6)

* Matthew Garrett <mjg@...hat.com> [100511 10:25]:
> On Tue, May 11, 2010 at 10:24:43AM -0700, Tony Lindgren wrote:
> 
> > For the failed suspend path in the kernel, currently the kernel would
> > unwind back all the drivers because of the failed driver, but that path
> > should be possible to optimize.
> 
> If you think it's possible to make this work then feel free to. But at 
> the point where you're adding code to every driver's suspend function to 
> determine whether or not it's got any pending events that userspace 
> hasn't consumed yet, and adding code to every bit of userspace to allow 
> it to indicate whether or not it's busy consuming events or just busy 
> drawing 3D bouncing cattle, I think you've reinvented suspend blocks.

Sorry, I have a working system that idles nicely and stays up on
batteries for a long time while running. I don't need to implement
anything like this :)

Cheers,

Tony
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