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From: Serge Belyshev <belyshev@depni.sinp.msu.ru>
To: Rodolfo Giometti <giometti@enneenne.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org,
       Andrew Morton <akpm@linux-foundation.org>,
       David Woodhouse <dwmw2@infradead.org>, Dave Jones <davej@redhat.com>,
       Sam Ravnborg <sam@ravnborg.org>, Greg KH <greg@kroah.com>,
       Randy Dunlap <randy.dunlap@oracle.com>,
       Kay Sievers <kay.sievers@vrfy.org>
Subject: Re: [PATCH 5/7] PPS: serial clients support.
References: <20080410160630.GA24885@enneenne.com>
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Date: Fri, 11 Apr 2008 18:43:07 +0400
In-Reply-To: <20080411084903.GK26777@enneenne.com> (Rodolfo Giometti's message
	of "Fri, 11 Apr 2008 10:49:03 +0200")
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Rodolfo Giometti <giometti@enneenne.com> writes:

> The problem is that deferencing the pps_event() call will cause severe
> problems to PPS accuracy... here you can find some considerations on
> this topic:
>
>    http://ml.enneenne.com/pipermail/linuxpps/2008-April/001738.html
>

What about adding precise timestamping to the lowest possible irq
handling level ( arch/*/entry*.S ) and then export that information
in a general way so it is useful for other applications?