From: Mike Galbraith <efault@gmx.de>
Date: Thu, 13 Jan 2011 03:54:50 +0000 (+0100)
Subject: sched, autogroup: Fix CONFIG_RT_GROUP_SCHED sched_setscheduler() failure
X-Git-Tag: v2.6.38-rc2~21^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f44937718ce3b8360f72f6c68c9481712517a867;p=pandora-kernel.git

sched, autogroup: Fix CONFIG_RT_GROUP_SCHED sched_setscheduler() failure

If CONFIG_RT_GROUP_SCHED is set, __sched_setscheduler() fails due to autogroup
not allocating rt_runtime.  Free unused/unusable rt_se and rt_rq, redirect RT
tasks to the root task group, and tell __sched_setscheduler() that it's ok.

Reported-and-tested-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1294890890.8089.39.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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