linux-kernel - Re: [linux-pm] [PATCH] PM: Make it possible to avoid wakeup events from being lost

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Message-ID: <Pine.LNX.4.44L0.1006261550400.24010-100000@netrider.rowland.org>
Date:	Sat, 26 Jun 2010 15:58:23 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	David Brownell <david-b@...bell.net>,
	Linux-pm mailing list <linux-pm@...ts.linux-foundation.org>,
	mark gross <640e9920@...il.com>,
	Florian Mickler <florian@...kler.org>,
	Neil Brown <neilb@...e.de>, <linux-pci@...r.kernel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: [linux-pm] [PATCH] PM: Make it possible to avoid wakeup events
 from being lost

On Sat, 26 Jun 2010, Rafael J. Wysocki wrote:

> On Saturday, June 26, 2010, Alan Stern wrote:
> > On Sat, 26 Jun 2010, David Brownell wrote:
> ... 
> > > > +        The
> > > > /sys/power/wakeup_count file allows user space to avoid
> > > > +        losing wakeup events
> > > > when transitioning the system into a sleep
> > > > +        state.  Reading
> > 
> > This could have been phrased better:  The /sys/power/wakeup_count file
> > allows user space to put the system into a sleep state conditionally
> > subject to the arrival of concurrent wakeup events, which will either
> > block the sleep transition or cause it to fail.
> 
> I'll chage this in the final version.  Thanks!

Even this should be simplified, if possible.  Maybe something like: ...  
put the system into a sleep state while taking into account the
concurrent arrival of wakeup events ...

I tried to put the word "reliably" in there, but it didn't seem to fit.  
After all, the current /sys/power/state is already very reliable about 
putting the system to sleep!

Alan Stern

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