Date: Sat, 18 Aug 2001 01:17:50 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: Mike Smith <msmith@FreeBSD.ORG> Cc: Amit Shah <amitshah@techie.com>, freebsd-arch@FreeBSD.ORG Subject: Re: threaded device drivers Message-ID: <Pine.BSF.4.21.0108180115380.53463-100000@beppo> In-Reply-To: <200108180808.f7I88mJ08635@mass.dis.org>
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> > In -current, drivers that want threads can spawn them off; where it's > absolutely necessary it's usually a driver-specific issue rather than > being something that could be implemented in any more generic a fashion. > 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. Threads are not nearly lightweight enough yet to provide, say, offlevel processing such as RSX-11 or VMS provided. -matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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