lttng-modules-tp-fields: add since note

Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>

diff --git a/contents/reference/lttng-modules/lttng-modules-tp-fields.md b/contents/reference/lttng-modules/lttng-modules-tp-fields.md
index 4088c4e77e3d70d58b17691e4d46050dac639a43..0a515f7f70b97b2c6509f59ae7e6d6bea92d20ef 100644 (file)
--- a/contents/reference/lttng-modules/lttng-modules-tp-fields.md
+++ b/contents/reference/lttng-modules/lttng-modules-tp-fields.md
@@ -1,6 +1,10 @@
 ---
 id: lttng-modules-tp-fields
 since: 2.7
+since-note: |
+  Previous versions used the TP_STRUCT__entry() and TP_fast_assign()
+  macros which also used different inner macros. The new ctf_*()
+  macros are similar to their LTTng-UST counterpart.
 ---
 
 <a name="doc-lttng-modules-tp-fast-assign"></a>