linux-kernel - Re: [RFC PATCH 2/2] Add virtual "idle" device

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Message-ID: <20090306184356.GA1311@ucw.cz>
Date:	Fri, 6 Mar 2009 19:43:56 +0100
From:	Pavel Machek <pavel@....cz>
To:	Marcin Slusarz <marcin.slusarz@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-input@...r.kernel.org
Subject: Re: [RFC PATCH 2/2] Add virtual "idle" device

On Mon 2009-03-02 23:42:52, Marcin Slusarz wrote:
> This virtual device can be used to tell user space about periods of time
> when user didn't "touch" input devices (keyboards, mice, touchpads, joysticks,
> etc). For now it supports only keyboard events.
> 
> Notification is done through simple select/poll + ioctl interface.
> 
> It can be used to implement screen savers, automatic suspend,
> autoaway/autodisconnect (e.g. in instant messangers) without
> any help from X server and its overhead (context switches).

I don't think this is good interface; what if you have more than one
seat? And without mouse handling it is useless anyway, so....

								Pavel
 

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