linux-kernel - Re: [PATCH] RTC: Add mmap method to rtc character driver

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Date:	Sat, 29 Jul 2006 16:02:50 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	jg@...top.org
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Neil Horman <nhorman@...driver.com>,
	Dave Airlie <airlied@...il.com>,
	Segher Boessenkool <segher@...nel.crashing.org>,
	linux-kernel@...r.kernel.org, a.zummo@...ertech.it,
	jg@...edesktop.org, Keith Packard <keithp@...thp.com>
Subject: Re: [PATCH] RTC: Add mmap method to rtc character driver

At Tue, 25 Jul 2006 17:39:01 -0400,
Jim Gettys wrote:
> 
> Keith's the expert (who wrote the smart scheduler): I'd take a wild ass
> guess that 10ms is good enough.
> 
> Maybe people can keep him on the cc list this time...
>                              - Jim

I talked to Keith about this at OLS and we agreed that a coarse
counter (probably incremented along with jiffies) accessible via
a vsyscall would be enough. I'm looking into this in the next days.

	tglx
 
 
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