rcu: Start RCU kthreads in TASK_INTERRUPTIBLE state
Upon creation, kthreads are in TASK_UNINTERRUPTIBLE state, which can result in softlockup warnings. Because some of RCU's kthreads can legitimately be idle indefinitely, start them in TASK_INTERRUPTIBLE state in order to avoid those warnings. Suggested-by:Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by:
Yinghai Lu <yinghai@kernel.org> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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