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

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Message-ID: <1274868593.5882.5185.camel@twins>
Date:	Wed, 26 May 2010 12:09:53 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Arve Hjønnevåg <arve@...roid.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Kevin Hilman <khilman@...prootsystems.com>,
	felipe.balbi@...ia.com,
	Linux PM <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Tony Lindgren <tony@...mide.com>,
	Paul Walmsley <paul@...an.com>
Subject: Re: [PATCH 0/8] Suspend block api (version 8)

On Wed, 2010-05-26 at 03:06 -0700, Arve Hjønnevåg wrote:

> I was not talking about our user-space code. Suspend has to be called
> by a running thread, so at least one runqueue is not empty.

But why would you need to suspend if the machine is fully idle?

Is it because you're using broken hardware that has lower power
consumption in suspend state as in idle?

Couldn't you make the runtime-pm smarter and utilize the suspend states?
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