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Message-ID: <20070123184432.GE18662@elf.ucw.cz> Date: Tue, 23 Jan 2007 19:44:32 +0100 From: Pavel Machek <pavel@....cz> To: Alessandro Di Marco <dmr@....it> Cc: linux-kernel@...r.kernel.org, vojtech@...e.cz Subject: Re: [ANNOUNCE] System Inactivity Monitor v1.0 Hi! > > But I still believe it can be out. > > > > Do you believe it could be a user-space daemon or what? > > Yes, what prevents userspace daemon watching /dev/input/event* to > provide this functionality? > > Well that was my first attempt. Just an hack, but it works. Nonetheless I found > the kernel-level approach fitting better the problem: it is elegant, simpler > and more efficient than user-level one. Well, unfortunately it is also wrong thing to do :-(. > For example, the subsystem provides at kernel-level handy > hiberante/suspend/resume callbacks that I use to turn on/off the timer, > avoiding the time-warp problem. Doing that at user-level would be far more > messy... Imagine for a moment that we solve time-warp somehow. Any other problems? [I'd really like to get "is user idle" solved, but it really should not be in kernel unless it _has_ to. And time-warp probably causes problems not only for your daemon.] Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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