Messages in this thread Patch in this message | | | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 4/6] tracing, rcu: Hide trace event rcu_nocb_wake when not used | Date | Fri, 1 Dec 2017 11:41:58 -0800 |
| |
From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
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> --- include/trace/events/rcu.h | 2 ++ 1 file changed, 2 insertions(+)
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 -- 2.5.2
| |