Implement a Linux version of sched_getparam() && sched_setparam(). Temporarily use the first thread in proc.

[emaste]

Looks fine to me. Can you add an XXX comment on the FIRST_THREAD_IN_PROC to comment on what is desired instead.

[trasz]

Hm, actually, looking at the diff this depends on, I'd prefer the callers (in this case, linux_sched_setparam() et al) to drop the proc lock, instead of kern_sched_setparam(). So, this might require some small changes.

[dchagin]

Unlock proc lock.

[dchagin]

XXX comment added about Linux scheduleing.