linux-kernel - Re: [PATCH 1/8] PM: Add suspend block api.

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Date:	Thu, 20 May 2010 11:11:11 +0200
From:	Florian Mickler <florian@...kler.org>
To:	linux-kernel@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/8] PM: Add suspend block api.

On Tue, 18 May 2010 15:11:11 +0200
Pavel Machek <pavel@....cz> wrote:

> On Thu 2010-05-13 21:11:06, Arve Hj??nnev??g wrote:
> > Adds /sys/power/policy that selects the behaviour of /sys/power/state.
> > After setting the policy to opportunistic, writes to /sys/power/state
> > become non-blocking requests that specify which suspend state to
> > enter
> 
> Yeah, one file selects behavior of another file, and to read available
> states for opportunistic, you have to write to file first.
> 
> I still don't like the interface.
> 

Actually, what would be a better interface? 

I wonder why it is not like this:

/sys/power/state 
	no change, works with and without opportunistic suspend the
	same. Ignores suspend blockers. Really no change. (From user
	perspective)

/sys/power/opportunistic
	On / Off
	While Off the opportunistic suspend is off.
	While On, the opportunistic suspend is on and if there are no
	suspend blockers the system goes to suspend. 

Cheers,
Flo





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