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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Rodolfo Giometti <giometti@enneenne.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org
Subject: Re: LinuxPPS low-level IRQs timestamps & ldisc
Date: Mon, 2 Jun 2008 16:48:40 +0100	[thread overview]
Message-ID: <20080602164840.0dc9cb96@core> (raw)
In-Reply-To: <20080602145603.GG26854@enneenne.com>

> I prefere avoid the if clause for getnstimeofday() since each
> instruction delay may decrease time precision, so:

Why should everyone else pay the cost of the getnstimeofday they don't
need ?

The single conditional check at the start won't make the slightest
material difference to your accuracy.

Alan

  reply	other threads:[~2008-06-02 16:03 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-01 16:15 LinuxPPS low-level IRQs timestamps & ldisc Rodolfo Giometti
2008-06-01 19:26 ` Lennart Sorensen
2008-06-02  6:51 ` Alan Cox
2008-06-02  9:25   ` Rodolfo Giometti
2008-06-02 14:02     ` Alan Cox
2008-06-02 14:56       ` Rodolfo Giometti
2008-06-02 15:48         ` Alan Cox [this message]
2008-06-02 17:22           ` Rodolfo Giometti
2008-06-02 19:35             ` Alan Cox
2008-06-02 20:21             ` Matti Aarnio
2008-06-03 13:40               ` Alan Cox
2008-06-02 17:09         ` Lennart Sorensen
2008-06-02 16:59           ` Alan Cox

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