linux-kernel - Re: Async suspend-resume patch w/ completions (was: Re: Async suspend-resume patch w/ rwsems)

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Message-Id: <200912162333.57245.rjw@sisk.pl>
Date:	Wed, 16 Dec 2009 23:33:57 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Zhang Rui <rui.zhang@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: Async suspend-resume patch w/ completions (was: Re: Async suspend-resume patch w/ rwsems)

On Wednesday 16 December 2009, Linus Torvalds wrote:
> 
> Btw, what are the timings if you just force everything async? I think that 
> worked on yur laptops, no?

No, it didn't.  I could make all PCI async, provided that the ACPI subtree was
resumed before any PCI devices.  [Theoretically I can make that happen by
moving ACPI resume to the _noirq phase (just for testing of course).  So I can
try to make PCI async in addition to serio and USB, plus i8042 perhaps, which
should be sfficient for the nx6325 I think.]

Making all async always hanged the boxes on resume.

Rafael
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