Date: Wed, 21 Jul 2004 19:15:05 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: "M. Warner Losh" <imp@bsdimp.com> Cc: arch@FreeBSD.org Subject: Re: kldunload DIAGNOSTIC idea... Message-ID: <87517.1090430105@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 21 Jul 2004 11:10:45 MDT." <20040721.111045.88466992.imp@bsdimp.com>
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In message <20040721.111045.88466992.imp@bsdimp.com>, "M. Warner Losh" writes: >We still ahve to wait for all threads with references to softc to >drain out before we unload the module. I see a small benefit to that, >but it seems that the requirements for softc are stronger than ifnet >and already cover it. The detach routine of the driver could easily >wait for the ifnet reference count to drop before returning for >network drivers (heck the if_detach call could wait all references are >gone, so that it isn't actually in the driver). Where it is stored >seems not to matter so much. I have not studied the ifnet scenario in details, so I won't argue about it. -- 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.
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