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

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Message-ID: <4C019C75.6020000@crca.org.au>
Date:	Sun, 30 May 2010 09:00:05 +1000
From:	Nigel Cunningham <ncunningham@...a.org.au>
To:	Arve Hjønnevåg <arve@...roid.com>
CC:	Alan Stern <stern@...land.harvard.edu>,
	Peter Zijlstra <peterz@...radead.org>,
	Brian Swetland <swetland@...gle.com>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	Florian Mickler <florian@...kler.org>,
	Linux PM <linux-pm@...ts.linux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)

Hi.

I like the sound of this much better too, but...

On 30/05/10 08:13, Arve Hjønnevåg wrote:
> On Sat, May 29, 2010 at 7:10 AM, Alan Stern<stern@...land.harvard.edu>  wrote:
>> There is no /sys/power/policy file.  In place of opportunistic suspend,
>> we have "QoS-based suspend".  This is initiated by userspace writing
>> "qos" to /sys/power/state, and it is very much like suspend-to-RAM.
>
> Why do you want to tie it to a specific state?

I do agree here. I would suggest that all /sys/power/state possibilities 
should have a qos- equivalent. You might not want to use any or all of 
them, but they should be available.

Regards,

Nigel



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