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To: "M. Warner Losh" <imp@bsdimp.com>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Thu, 21 May 2009 10:15:37 CST."
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Date: Thu, 21 May 2009 17:17:02 +0000
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Cc: scottl@samsco.org, src-committers@FreeBSD.org, jhb@FreeBSD.org,
	svn-src-all@FreeBSD.org, attilio@FreeBSD.org,
	svn-src-head@FreeBSD.org, rwatson@FreeBSD.org, kostikbel@gmail.com
Subject: Re: svn commit: r192535 - head/sys/kern 
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In message <20090521.101537.864824728.imp@bsdimp.com>, "M. Warner Losh" writes:

>Right now, the devctl_notify() is what gets it into devd.  However,
>I'd always viewed devd as having multiple event sources and not just
>from the /dev/devctl device.

Correct, but kqueuing /dev is not nearly as expressiv as devctl,
where the protocol has space where the device driver could pass
useful information to devd(8).

For instance, I find the regexp matching of ethernet drivers very,
very silly: the device driver should just tell devd(8) that it is
an ethernet, so that we don't have this non-documented registry of
device driver names.

Poul-Henning

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.