Re: kldunload DIAGNOSTIC idea...

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 07/21/04

  • Next message: Mark Murray: "[PATCH] Big cleanup job on memory device" 
    To: "M. Warner Losh" <imp@bsdimp.com>
Date: Wed, 21 Jul 2004 19:15:05 +0200

    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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  • Next message: Mark Murray: "[PATCH] Big cleanup job on memory device"

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