Is there any way to avoid copy between the kernel and userland

Kamal R. Prasad kamalp at acm.org
Thu Nov 23 06:30:37 UTC 2006


If you create a pseudo- device with an mmap() interface -that should do the
job.

regards
-kamal


On 11/23/06, Bharma Ji <bharmaji at gmail.com> wrote:
>
> Hi
> I am looking for any FreeBSD facility that will allow a userland process
> to
> pass data to the kernel without doing a copyin or copyout e.g. using a
> shared data structure (queue? ) for example? Any pointers will be useful
> Thanks
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