X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-context-vtid.c;h=c419d18b3ede7db666d2c5ea3cada82df6dafcbd;hb=daeb93bb244bf406d9e8bd620247b64f9144127a;hp=3fe86405c112307a47e6c1abe0a9c62fe8b2175b;hpb=d51652f7ee9f3214b62c17441913168115ab4c9e;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-context-vtid.c b/liblttng-ust/lttng-context-vtid.c
index 3fe86405..c419d18b 100644
--- a/liblttng-ust/lttng-context-vtid.c
+++ b/liblttng-ust/lttng-context-vtid.c
@@ -13,6 +13,7 @@
 #include <lttng/ust-tracer.h>
 #include <lttng/ringbuffer-config.h>
 #include <lttng/ust-tid.h>
+#include "ltt-tracer-core.h"
 
 /*
  * We cache the result to ensure we don't trigger a system call for
@@ -74,3 +75,11 @@ int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx)
 	field->record = vtid_record;
 	return 0;
 }
+
+/*
+ * Force a read (imply TLS fixup for dlopen) of TLS variables.
+ */
+void lttng_fixup_vtid_tls(void)
+{
+	asm volatile ("" : : "m" (cached_vtid));
+}