Date: Sat, 18 Aug 2001 03:14:04 -0700 From: Mike Smith <msmith@freebsd.org> To: mjacob@feral.com Cc: Mike Smith <msmith@FreeBSD.ORG>, Amit Shah <amitshah@techie.com>, freebsd-arch@FreeBSD.ORG Subject: Re: threaded device drivers Message-ID: <200108181014.f7IAE4J10122@mass.dis.org> In-Reply-To: Your message of "Sat, 18 Aug 2001 01:17:50 PDT." <Pine.BSF.4.21.0108180115380.53463-100000@beppo>
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> An example of this is the QLogic driver (isp(4)) spawns a thread that is used
> to rebuild loop state and rescan the loop and fabric port databases after an
> asynchronous event brings a notification of change.
You can do this with the taskqueue mechanism too; since you have a
notification event.
> Threads are not nearly lightweight enough yet to provide, say, offlevel
> processing such as RSX-11 or VMS provided.
Taskqueue does this well too.
--
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also. But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view. [Dr. Fritz Todt]
V I C T O R Y N O T V E N G E A N C E
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