From: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Date: Tue, 1 Jul 2008 21:32:15 +0000 (+0200)
Subject: sched: rework of "prioritize non-migratable tasks over migratable ones"
X-Git-Tag: v2.6.27-rc1~847^2~5
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ebefa8ceefed44cc321be70afc54a585a68ac0b;p=pandora-kernel.git

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

(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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