From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Tue, 26 Mar 2013 11:30:07 +0000 (-0400)
Subject: Performance: add unlikely to tracepoint dynamic linking test
X-Git-Tag: v2.1.3~4
X-Git-Url: http://git.lttng.org/?a=commitdiff_plain;h=42e6b243d6485f1f4156c8cb9232d05e43ffc827;p=lttng-ust.git

Performance: add unlikely to tracepoint dynamic linking test

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/include/lttng/tracepoint.h b/include/lttng/tracepoint.h
index 3433560a..785c87e5 100644
--- a/include/lttng/tracepoint.h
+++ b/include/lttng/tracepoint.h
@@ -153,7 +153,7 @@ void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__))		\
 {											\
 	struct tracepoint_probe *__tp_probe;						\
 											\
-	if (!TP_RCU_LINK_TEST())							\
+	if (caa_unlikely(!TP_RCU_LINK_TEST()))						\
 		return;									\
 	tp_rcu_read_lock_bp();								\
 	__tp_probe = tp_rcu_dereference_bp(__tracepoint_##_provider##___##_name.probes); \