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Date:	Sun, 2 May 2010 08:57:31 +0200
From:	Pavel Machek <>
To:	Arve Hj??nnev??g <>
	"Rafael J. Wysocki" <>,
	Alan Stern <>,
	Tejun Heo <>, Oleg Nesterov <>,
	Len Brown <>,
	Andrew Morton <>,
	David Rientjes <>,
	Matt Helsley <>
Subject: Re: [PATCH 3/8] PM: suspend_block: Abort task freezing if a
 suspend_blocker is active.


> If a suspend_blocker is active, suspend will fail anyway. Since
> try_to_freeze_tasks can take up to 20 seconds to complete or fail, aborting
> as soon as someone blocks suspend (e.g. from an interrupt handler) improves
> the worst case wakeup latency.
> On an older kernel where task freezing could fail for processes attached
> to a debugger, this fixed a problem where the device sometimes hung for
> 20 seconds before the screen turned on.
> Signed-off-by: Arve Hj??nnev??g <>

I acked this one before, please preserve such tags.

(cesky, pictures)
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