tree 23bf0c8cdb5268ef92ef9ed007639705e922b1b0
parent 9d68197c05201d8edc70d58bd1d5dad05d8455e8
author Paul E. McKenney <paul.mckenney@linaro.org> 1308351199 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1317271092 -0700

rcu: Add event-tracing for RCU callback invocation

There was recently some controversy about the overhead of invoking RCU
callbacks.  Add TRACE_EVENT()s to obtain fine-grained timings for the
start and stop of a batch of callbacks and also for each callback invoked.

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