linux-kernel - Re: [PATCH 0/8] Suspend block api (version 6)

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Message-ID: <20100504152724.GA2184@srcf.ucam.org>
Date:	Tue, 4 May 2010 16:27:24 +0100
From:	Matthew Garrett <mjg@...hat.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Kevin Hilman <khilman@...prootsystems.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Arve Hjønnevåg <arve@...roid.com>,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	Tejun Heo <tj@...nel.org>, Oleg Nesterov <oleg@...hat.com>,
	Paul Walmsley <paul@...an.com>, magnus.damm@...il.com,
	mark gross <mgross@...ux.intel.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Geoff Smith <geoffx.smith@...el.com>
Subject: Re: [PATCH 0/8] Suspend block api (version 6)

On Tue, May 04, 2010 at 09:51:39AM -0400, Alan Stern wrote:

> Another thing that Kevin is missing: There is more to the system than
> the devices and the CPU.  For example: RAM, an embedded controller (on
> modern desktop/laptop systems), a power supply, and so on.  Dynamic PM
> for the CPU and the devices won't power-down these things, but system
> PM will.

Somewhat true - machines with C1E support will put the RAM into self 
refresh when the cpu is idle, but you're right that there are various 
components that we simply don't have control over in the desktop world 
at present.

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