From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Tue, 5 May 2009 15:50:21 +0000 (+0200)
Subject: sched: rt: document the risk of small values in the bandwidth settings
X-Git-Tag: v2.6.31-rc1~421^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=60aa605dfce2976e54fa76e805ab0f221372d4d9;p=pandora-kernel.git

sched: rt: document the risk of small values in the bandwidth settings

Thomas noted that we should disallow sysctl_sched_rt_runtime == 0 for
(!RT_GROUP) since the root group always has some RT tasks in it.

Further, update the documentation to inspire clue.

[ Impact: exclude corner-case sysctl_sched_rt_runtime value ]

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090505155436.863098054@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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