sched: rework of "prioritize non-migratable tasks over migratable ones"

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(1) handle in a generic way all cases when a newly woken-up task is
not migratable (not just a corner case when "rt_se->nr_cpus_allowed ==
1")

(2) if current is to be preempted, then make sure "p" will be picked
up by pick_next_task_rt().
i.e. move task's group at the head of its list as well.

currently, it's not a case for the group-scheduling case as described
here: http://www.ussg.iu.edu/hypermail/linux/kernel/0807.0/0134.html

Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Dmitry Adamushko 2008-07-01 23:32:15 +02:00 • committed by Ingo Molnar

parent 13b40c1e40

commit 7ebefa8cee

1 changed files with 40 additions and 28 deletions

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kernel/sched_rt.c

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