Date: Thu, 29 Jun 2006 09:32:42 -0700 From: "Kip Macy" <kip.macy@gmail.com> To: "Oleksandr Tymoshenko" <gonzo@pbxpress.com> Cc: freebsd-hackers@freebsd.org, Christian Zander <czander@nvidia.com> Subject: Re: NVIDIA FreeBSD kernel feature requests Message-ID: <b1fa29170606290932m419e1dc0tf69a447daef5dde9@mail.gmail.com> In-Reply-To: <44A3FD87.8000006@pbxpress.com> References: <20060629111231.GA692@wolf.nvidia.com> <44A3FD87.8000006@pbxpress.com>
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IIRC lack of per instance cdevs also limits Freebsd to one vmware instance.
-Kip
On 6/29/06, Oleksandr Tymoshenko <gonzo@pbxpress.com> wrote:
> Christian Zander wrote:
> > Hi all,
> > # Task: implement mechanism to allow character drivers to
> > maintain per-open instance data (e.g. like the Linux
> > kernel's 'struct file *').
> > Motivation: allows per thread NVIDIA notification delivery; also
> > reduces CPU overhead for notification delivery
> > from the NVIDIA kernel module to the X driver and to
> > OpenGL.
> > Priority: should translate to improved X/OpenGL performance.
> > Status: has not been started.
> I've stumbled across this issue a while ago. Actually it can
> be partially solved using EVENTHANDLER_REGISTER of dev_clone event with
> keeping state structure in si_drv1 or si_drv2 fields. I'm not sure it's
> the best solution but it works for me though it smells like hack, and
> looks like hack :) Anyway, having legitimate per-open instance data
> structures of cdevs is a great assistance in porting linux drivers to
> FreeBSD. Just my $0.02.
>
> --
> Sincerely,
>
> Oleksandr Tymoshenko
> PBXpress Communications, Inc.
> http://www.pbxpress.com
> Tel./Fax.: +1 866 SIP PBX1 Ext. 656
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