From: Francis Deslauriers <francis.deslauriers@efficios.com>
Date: Wed, 11 Dec 2019 22:14:43 +0000 (-0500)
Subject: Cleanup: remove redundant memory barrier
X-Git-Tag: v2.13.0-rc1~539
X-Git-Url: http://git.lttng.org/?p=lttng-ust.git;a=commitdiff_plain;h=8306baea3da8b1f429e14218b1ef7413ee56ed19

Cleanup: remove redundant memory barrier

This memory barrier is redundant with the one already issued in
`rcu_assign_pointer()` function during the `set_tracepoint()` call.

Signed-off-by: Francis Deslauriers <francis.deslauriers@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I78decd9ae87a63d7663928ad99e03831155548f7
---

diff --git a/liblttng-ust/lttng-events.c b/liblttng-ust/lttng-events.c
index 047759b7..7afee7fc 100644
--- a/liblttng-ust/lttng-events.c
+++ b/liblttng-ust/lttng-events.c
@@ -600,8 +600,6 @@ int lttng_event_create(const struct lttng_event_desc *desc,
 		goto sessiond_register_error;
 	}
 
-	/* Populate lttng_event structure before tracepoint registration. */
-	cmm_smp_wmb();
 	cds_list_add(&event->node, &chan->session->events_head);
 	cds_hlist_add_head(&event->hlist, head);
 	return 0;