From: Rodolfo Giometti <giometti@enneenne.com>
To: Serge Belyshev <belyshev@depni.sinp.msu.ru>
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.
Date: Fri, 11 Apr 2008 18:58:36 +0200 [thread overview]
Message-ID: <20080411165836.GY26777@enneenne.com> (raw)
In-Reply-To: <87prsw78qs.fsf@depni.sinp.msu.ru>
On Fri, Apr 11, 2008 at 06:43:07PM +0400, Serge Belyshev wrote:
> 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?
The problem is that at such level you cannot easily retrieve info
about where your serial port is connected to and which PPS source you
should manage...
Ciao,
Rodolfo
--
GNU/Linux Solutions e-mail: giometti@enneenne.com
Linux Device Driver giometti@linux.it
Embedded Systems phone: +39 349 2432127
UNIX programming skype: rodolfo.giometti
next prev parent reply other threads:[~2008-04-11 16:59 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-10 16:01 [PATCH 5/7] PPS: serial clients support Rodolfo Giometti
2008-04-10 16:06 ` Rodolfo Giometti
2008-04-10 17:41 ` Greg KH
2008-04-10 18:22 ` LinuxPPS (RESUBMIT 4): the PPS Linux implementation Rodolfo Giometti
2008-04-10 18:22 ` [PATCH 1/7] LinuxPPS core support Rodolfo Giometti
2008-04-10 18:22 ` [PATCH 2/7] PPS: userland header file for PPS API Rodolfo Giometti
2008-04-10 18:22 ` [PATCH 3/7] PPS: documentation programs and examples Rodolfo Giometti
2008-04-10 18:22 ` [PATCH 4/7] PPS: LinuxPPS clients support Rodolfo Giometti
2008-04-10 18:22 ` [PATCH 5/7] PPS: serial " Rodolfo Giometti
2008-04-10 18:22 ` [PATCH 6/7] PPS: example program to enable PPS support on serial ports Rodolfo Giometti
2008-04-10 18:22 ` [PATCH 7/7] PPS: parallel port clients support Rodolfo Giometti
2008-04-10 20:09 ` [PATCH 5/7] PPS: serial " Alan Cox
2008-04-11 7:55 ` Rodolfo Giometti
2008-04-11 8:28 ` Alan Cox
2008-04-11 8:49 ` Rodolfo Giometti
2008-04-11 14:43 ` Serge Belyshev
2008-04-11 16:58 ` Rodolfo Giometti [this message]
2008-04-11 13:47 ` Lennart Sorensen
2008-04-11 14:46 ` Alan Cox
2008-04-30 11:41 ` Rodolfo Giometti
2008-04-30 16:28 ` Alan Cox
2008-05-02 7:33 ` Rodolfo Giometti
2008-05-02 10:18 ` Alan Cox
2008-05-02 10:45 ` Rodolfo Giometti
2008-05-02 12:56 ` Alan Cox
2008-05-02 21:09 ` Rodolfo Giometti
-- strict thread matches above, loose matches on Subject: below --
2008-04-10 15:15 LinuxPPS (RESUBMIT 3): the PPS Linux implementation Rodolfo Giometti
2008-04-10 15:15 ` [PATCH 1/7] LinuxPPS core support Rodolfo Giometti
2008-04-10 15:15 ` [PATCH 2/7] PPS: userland header file for PPS API Rodolfo Giometti
2008-04-10 15:15 ` [PATCH 3/7] PPS: documentation programs and examples Rodolfo Giometti
2008-04-10 15:15 ` [PATCH 4/7] PPS: LinuxPPS clients support Rodolfo Giometti
2008-04-10 15:15 ` [PATCH 5/7] PPS: serial " Rodolfo Giometti
2008-04-10 15:28 ` Alan Cox
2008-04-10 15:36 ` Rodolfo Giometti
2008-03-06 12:08 LinuxPPS (RESUBMIT 2): the PPS Linux implementation Rodolfo Giometti
2008-03-06 12:09 ` [PATCH 1/7] LinuxPPS core support Rodolfo Giometti
2008-03-06 12:09 ` [PATCH 2/7] PPS: userland header file for PPS API Rodolfo Giometti
2008-03-06 12:09 ` [PATCH 3/7] PPS: documentation programs and examples Rodolfo Giometti
2008-03-06 12:09 ` [PATCH 4/7] PPS: LinuxPPS clients support Rodolfo Giometti
2008-03-06 12:09 ` [PATCH 5/7] PPS: serial " Rodolfo Giometti
2008-03-20 20:04 ` Andrew Morton
2008-03-21 11:17 ` Rodolfo Giometti
2008-03-21 17:41 ` Andrew Morton
2008-03-25 10:38 ` Rodolfo Giometti
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