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

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Message-ID: <1274983363.27810.5749.camel@twins>
Date:	Thu, 27 May 2010 20:02:43 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Florian Mickler <florian@...kler.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Arve Hjønnevåg <arve@...roid.com>,
	Vitaly Wool <vitalywool@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Paul@...p1.linux-foundation.org, felipe.balbi@...ia.com,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux PM <linux-pm@...ts.linux-foundation.org>
Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)

On Thu, 2010-05-27 at 18:54 +0100, Matthew Garrett wrote:
> On Thu, May 27, 2010 at 07:52:09PM +0200, Peter Zijlstra wrote:
> 
> > How so, event happens on hardware level, IRQ gets raised, CPU wakes up,
> > handler gets run, handler generates a task wakeup, runqueue isn't empty,
> > we run stuff.
> 
> If you're using idle-based suspend without any forced idling or blocking 
> of applications then you don't lose wakeups. People keep conflating 
> separate issues.

I still don't see how blocking applications will cause missed wakeups in
anything but a buggy application at worst, and even those will
eventually get the event when they unblock.

What seems to be the confusion?
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