From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8) Date: Thu, 27 May 2010 20:02:43 +0200 Message-ID: <1274983363.27810.5749.camel@twins> References: <20100527003943.07c17f85@lxorguk.ukuu.org.uk> <20100527140655.GA28048@srcf.ucam.org> <20100527155201.GA31937@srcf.ucam.org> <20100527192135.6c6543b3@schatten.dmk.lab> <1274981127.27810.5597.camel@twins> <20100527194241.52caaf37@schatten.dmk.lab> <1274982729.27810.5703.camel@twins> <20100527175426.GC3543@srcf.ucam.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Return-path: Received: from bombadil.infradead.org ([18.85.46.34]:37457 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934383Ab0E0SCt convert rfc822-to-8bit (ORCPT ); Thu, 27 May 2010 14:02:49 -0400 In-Reply-To: <20100527175426.GC3543@srcf.ucam.org> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Matthew Garrett Cc: Florian Mickler , Thomas Gleixner , Alan Cox , Arve =?ISO-8859-1?Q?Hj=F8nnev=E5g?= , Vitaly Wool , LKML , Paul@smtp1.linux-foundation.org, felipe.balbi@nokia.com, Linux OMAP Mailing List , Linux PM 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?