From ec2c507fe8c8fa3c04fc6cb99a382a965c477379 Mon Sep 17 00:00:00 2001
From: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Date: Fri, 25 Jan 2008 21:07:59 +0100
Subject: [PATCH] sched: group scheduling, minor fixes

Minor bug fixes for the group scheduler:

- Use a mutex to serialize add/remove of task groups and also when
  changing shares of a task group. Use the same mutex when printing
  cfs_rq debugging stats for various task groups.

- Use list_for_each_entry_rcu in for_each_leaf_cfs_rq macro (when
  walking task group list)

Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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