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rcu: Add RCU_FAST_NO_HZ tracing for idle exit

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Traces of rcu_prep_idle events can be confusing because
rcu_cleanup_after_idle() does no tracing.  This commit therefore adds
this tracing.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2012-02-23 15:58:29 -08:00 • committed by Paul E. McKenney
parent 66f75a5d02
commit 2fdbb31b66
2 changed files with 2 additions and 0 deletions
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1
include/trace/events/rcu.h
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@ -292,6 +292,7 @@ TRACE_EVENT(rcu_dyntick,
* "More callbacks": Still more callbacks, try again to clear them out.
* "Callbacks drained": All callbacks processed, off to dyntick idle!
* "Timer": Timer fired to cause CPU to continue processing callbacks.
* "Cleanup after idle": Idle exited, timer canceled.
*/
TRACE_EVENT(rcu_prep_idle,