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Date: Sat, 29 Jul 2006 23:49:48 +0200
From: Edgar Toernig <froese@gmx.de>
To: Bill Huey (hui) <billh@gnuppy.monkey.org>
Cc: Neil Horman <nhorman@tuxdriver.com>, Jim Gettys <jg@laptop.org>,
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       Keith Packard <keithp@keithp.com>,
       "Bill Huey (hui)" <billh@gnuppy.monkey.org>
Subject: Re: [PATCH] RTC: Add mmap method to rtc character driver
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Bill Huey (hui) wrote:
>
> > Its always been the case.  Its hardware can only support one timer (or at least
> > one timer period), and as such multiple users would interefere with each other.
> 
> Well, this points out a serious problem with doing an mmap extension to
> /dev/rtc. It would be better to have a page mapped by another device like
> /dev/jiffy_counter, or something like that rather than to overload the
> /dev/rtc with that functionality.

You mean something like this, /dev/itimer?

    http://marc.theaimsgroup.com/?m=115412412427996

Ciao, ET.