tree bf38250a5b7c969a6b91ef1043f0cfdd02f966d4
parent 09f2724a786f76475ef2985cf84f5359c553aade
author Peter Zijlstra <a.p.zijlstra@chello.nl> 1218721740 +0200
committer Ingo Molnar <mingo@elte.hu> 1218721858 +0200

sched: fix rt-bandwidth hotplug race

When we hot-unplug a cpu and rebuild the sched-domain, all cpus will be
detatched. Alex observed the case where a runqueue was stealing bandwidth
from an already disabled runqueue to satisfy its own needs.

Stop this by skipping over already disabled runqueues.

Reported-by: Alex Nixon <alex.nixon@citrix.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Alex Nixon <alex.nixon@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>