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rcu: Update list of rcu_future_grace_period() trace events 

Reworking grace-period initiation and funnel locking added new
rcu_future_grace_period() trace events, so this commit updates the
rcu_future_grace_period() trace event's header comment accordingly.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Nicholas Piggin <npiggin@gmail.com>
hifive-unleashed-5.1
Paul E. McKenney 2018-04-19 16:38:25 -07:00
parent a458360af6
commit c21b8b3ed0
1 changed files with 7 additions and 6 deletions
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13
include/trace/events/rcu.h
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@ -84,20 +84,21 @@ TRACE_EVENT(rcu_grace_period,
);
/*
* Tracepoint for future grace-period events, including those for no-callbacks
* CPUs. The caller should pull the data from the rcu_node structure,
* other than rcuname, which comes from the rcu_state structure, and event,
* which is one of the following:
* Tracepoint for future grace-period events. The caller should pull
* the data from the rcu_node structure, other than rcuname, which comes
* from the rcu_state structure, and event, which is one of the following:
*
* "Startleaf": Request a nocb grace period based on leaf-node data.
* "Startleaf": Request a grace period based on leaf-node data.
* "Prestarted": Someone beat us to the request
* "Startedleaf": Leaf-node start proved sufficient.
* "Startedleafroot": Leaf-node start proved sufficient after checking root.
* "Startedroot": Requested a nocb grace period based on root-node data.
* "NoGPkthread": The RCU grace-period kthread has not yet started.
* "StartWait": Start waiting for the requested grace period.
* "ResumeWait": Resume waiting after signal.
* "EndWait": Complete wait.
* "Cleanup": Clean up rcu_node structure after previous GP.
* "CleanupMore": Clean up, and another no-CB GP is needed.
* "CleanupMore": Clean up, and another GP is needed.
*/
TRACE_EVENT(rcu_future_grace_period,