David Laight <david@l8s.co.uk> wrote:
> I was wondering whether the lwp structure could contain a small area
> that the scheduler could use for 'private data'. If the area wan't large
> enough then the scheduler would either have to dynamically allocate the
> extra fields, or the descision would be made to change the kernel
> structure.
Yes, such way was considered too.
But scheduler data structures could be variable-length, dependent on
implementation. Also, dynamic allocation would be quite clean design, which
should not reduce scheduling mechanism.

-- 
Best regards,
Mindaugas
www.NetBSD.org