sched: Fix sched_domain iterations vs. RCU

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Vladis Kletnieks reported a new RCU debug warning in the scheduler.

Since commit dce840a087 ("sched: Dynamically allocate sched_domain/
sched_group data-structures") the sched_domain trees are protected by
RCU instead of RCU-sched.

This means that we need to include rcu_read_lock() protection when we
iterate them since disabling preemption doesn't suffice anymore.

Reported-by: Valdis.Kletnieks@vt.edu
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1302882741.2388.241.camel@twins
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Peter Zijlstra 2011-04-18 11:24:34 +02:00 • committed by Ingo Molnar

parent 2f36825b17

commit 057f3fadb3

1 changed files with 11 additions and 3 deletions

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kernel/sched.c

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