]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
sched: rt group scheduling
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Fri, 25 Jan 2008 20:08:30 +0000 (21:08 +0100)
committerIngo Molnar <mingo@elte.hu>
Fri, 25 Jan 2008 20:08:30 +0000 (21:08 +0100)
commit6f505b16425a51270058e4a93441fe64de3dd435
treebe21e711d93bc4d088b97c4a4f585a5044dbaa7d
parentfa85ae2418e6843953107cd6a06f645752829bc0
sched: rt group scheduling

Extend group scheduling to also cover the realtime classes. It uses the time
limiting introduced by the previous patch to allow multiple realtime groups.

The hard time limit is required to keep behaviour deterministic.

The algorithms used make the realtime scheduler O(tg), linear scaling wrt the
number of task groups. This is the worst case behaviour I can't seem to get out
of, the avg. case of the algorithms can be improved, I focused on correctness
and worst case.

[ akpm@linux-foundation.org: move side-effects out of BUG_ON(). ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
include/linux/init_task.h
include/linux/sched.h
kernel/fork.c
kernel/sched.c
kernel/sched_rt.c