linux-kernel - Re: RTC subsystem and fractions of seconds

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Message-Id: <20070107025425.0A7C21FAC07@adsl-69-226-248-13.dsl.pltn13.pacbell.net>
Date:	Sat, 06 Jan 2007 18:54:24 -0800
From:	David Brownell <david-b@...bell.net>
To:	hugh@...itas.com
Cc:	phdm@...qel.be, mpm@...enic.com, linux-kernel@...r.kernel.org
Subject: Re: RTC subsystem and fractions of seconds

> > Hmm ... "looping" fights against "quickly"; as would "wait for next
> > update IRQ" (on RTCs that support that).  But it would improve precision,
> > at least in the sense of having the system clock and that RTC spending
> > less time with the lowest "seconds" digit disagreeing.
> > 
> > This is something you could write a patch for, n'est-ce pas?
>
> If you're thinking of going that way,

Philippe seemed to be ...


>	it'd be courteous to CC Matt,
> who devoted some effort to removing just that loop in 2.6.17 ;)

Hmm ... "git whatchanged drivers/rtc/hctosys.c" shows no such change.
So I can't find any record of such a change or its rationale.


- dave


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