linux-kernel - Re: [RFC][PATCH 0/7] PM: Asynchronous suspend and resume (updated)

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Date:	Wed, 26 Aug 2009 15:20:48 +0200
From:	Pavel Machek <pavel@....cz>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	linux-pm <linux-pm@...ts.linux-foundation.org>,
	linux-acpi <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Zhang Rui <rui.zhang@...el.com>, Len Brown <lenb@...nel.org>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Greg KH <gregkh@...e.de>
Subject: Re: [RFC][PATCH 0/7] PM: Asynchronous suspend and resume (updated)

Hi!

> > * Added [2/7] adding a framework for representing PM link (idea described
> >   in the patch message).
> > 
> > * [3/7] is the async resume patch (idea described in the patch message).
> > 
> > * [4/7] is the async suspend patch.
> > 
> > * [5/7] - [7/7] set async_suspend for devices in a few selected subsystems.
> > 
> > The patches have been tested on HP nx6325.
> > 
> > Comments welcome.
> 
> I'm not sure about the design of these things.  How much do we care 
> about wasting memory?  Your scheme allocates six pointers for every 
> dependency, plus four pointers for every device.  It's possible to 
> reduce this considerably, especially if the parent-child dependencies 
> aren't stored explicitly.

I'd say that this level of memory waste is perfectly acceptable...

							Pavel


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