linux-kernel - Re: Attempted summary of suspend-blockers LKML thread

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Message-ID: <20100804204839.GA4743@srcf.ucam.org>
Date:	Wed, 4 Aug 2010 21:48:39 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Pavel Machek <pavel@....cz>
Cc:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Arve Hj?nnev?g <arve@...roid.com>,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	florian@...kler.org, rjw@...k.pl, stern@...land.harvard.edu,
	swetland@...gle.com, peterz@...radead.org, tglx@...utronix.de,
	alan@...rguk.ukuu.org.uk
Subject: Re: Attempted summary of suspend-blockers LKML thread

On Wed, Aug 04, 2010 at 10:42:08PM +0200, Pavel Machek wrote:

> This came like a bit of a shock to me ("why do they make it so complex
> then"), but... it also means that as soon as you are able to stop
> "unwanted" processing, you can just leave normal cpuidle mechanisms to
> deal with the rest...

How do you differentiate between "unwanted" and "wanted" processing in 
the same task in a race-free manner? 

-- 
Matthew Garrett | mjg59@...f.ucam.org
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