Date: Thu, 18 Aug 2005 21:48:33 -0700 From: Julian Elischer <julian@elischer.org> To: gnn@freebsd.org Cc: freebsd-arch@freebsd.org Subject: Re: Special schedulers, one CPU only kernel, one only userland Message-ID: <430564A1.70304@elischer.org> In-Reply-To: <m27jeiisq3.wl%gnn@neville-neil.com> References: <42F9ECF2.8080809@freebsd.org> <200508181023.05929.jhb@FreeBSD.org> <20050818095546.A91965@xorpc.icir.org> <200508181312.21512.jhb@FreeBSD.org> <20050818190625.GA28174@odin.ac.hmc.edu> <m27jeiisq3.wl%gnn@neville-neil.com>
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gnn@freebsd.org wrote: > At Thu, 18 Aug 2005 12:06:25 -0700, > brooks wrote: > >>Certainly we need assurance that nothing is going to try and touch >>the driver before the driver's detach function calls if_free. After >>if_free returns, no aspect of the driver should touch the ifnet. Other >>parts of the networking system might still have refrence to it should we >>end up with a refcouting scheme where the final free of ifnets comes >>some time later. All refrences to the softc need to be pruged prior to >>exit from the detach routine. >> > > > Documentatoin comment. When are we going to write a driver writer's > handbook? I've been reading the linux device drivers bookl from oreily. You caould almost use the first several chapters with sed s/linux/FreeBSD/ and a few other minor changes.. (not a serious comment of course but..) > > Later, > George > _______________________________________________ > freebsd-arch@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-arch > To unsubscribe, send any mail to "freebsd-arch-unsubscribe@freebsd.org"
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