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Date: Mon, 4 Feb 2008 21:42:06 +0700
From: Eugene Grosbein <eugen@kuzbass.ru>
To: Jeremy Chadwick <koitsu@freebsd.org>
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Cc: Ganbold <ganbold@micom.mng.net>,
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Subject: Re: /dev/cuad0: Device busy
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On Mon, Feb 04, 2008 at 05:10:20AM -0800, Jeremy Chadwick wrote:

> Also, the above mechanism must be fairly old, because I imagine it would
> be more effective to utilise kqueue/kevent to inform said programs of
> when the serial port is available for use.

The kqueue/kevent had appeared only in 4.x version of FreeBSD
and serial ports were used long time before.

Eugene Grosbein