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rcu: Add tracing for RCU_FAST_NO_HZ
authorPaul E. McKenney <paul.mckenney@linaro.org>
Tue, 22 Nov 2011 22:58:03 +0000 (14:58 -0800)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Sun, 11 Dec 2011 18:32:00 +0000 (10:32 -0800)
This commit adds trace_rcu_prep_idle(), which is invoked from
rcu_prepare_for_idle() and rcu_wake_cpu() to trace attempts on
the part of RCU to force CPUs into dyntick-idle mode.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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