diff options
| author |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-10-12 18:16:41 -0400 |
|---|---|---|
| committer |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-12-11 09:17:39 -0800 |
| commit | 9122caf99b85c0f16938419547d5a9a84ae287a4 (patch) | |
| tree | 9ace6627305fb4f9402935f28f29c0a746d1f653 /include/trace/events/rcu.h | |
| parent | srcu: Prohibit call_srcu() use under raw spinlocks (diff) | |
| download | linux-dev-9122caf99b85c0f16938419547d5a9a84ae287a4.tar.xz linux-dev-9122caf99b85c0f16938419547d5a9a84ae287a4.zip | |
tracing, rcu: Hide trace event rcu_nocb_wake when not used
The trace event rcu_nocb_wake is only used when CONFIG_RCU_NOCB_CPU is
defined. But the trace event is defined regardless. As defined trace
events take up memory, it is a waste to have it defined when not used.
Surround the trace event with an #ifdef to have it only defined when it
is used.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/trace/events/rcu.h')
| -rw-r--r-- | include/trace/events/rcu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h index 59d40c454aa0..dbca79ea0677 100644 --- a/include/trace/events/rcu.h +++ b/include/trace/events/rcu.h @@ -243,6 +243,7 @@ TRACE_EVENT(rcu_exp_funnel_lock, __entry->grphi, __entry->gpevent) ); +#ifdef CONFIG_RCU_NOCB_CPU /* * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended * to assist debugging of these handoffs. @@ -285,6 +286,7 @@ TRACE_EVENT(rcu_nocb_wake, TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) ); +#endif /* * Tracepoint for tasks blocking within preemptible-RCU read-side |