Don't save log level in session configuration when unneeded

Saving the log level of events in session configurations when "ALL" log
levels are enabled may confuse both users and programs working with
session configurations.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/src/bin/lttng-sessiond/save.c b/src/bin/lttng-sessiond/save.c
index a485491780edf8fec00499559d86ce08b9d16aec..8c35d749e5272539c4703a5b8b104ab6c3a62a8c 100644 (file)
--- a/src/bin/lttng-sessiond/save.c
+++ b/src/bin/lttng-sessiond/save.c
@@ -642,11 +642,14 @@ int save_ust_event(struct config_writer *writer,
                goto end;
        }
 
-       ret = config_writer_write_element_signed_int(writer,
-               config_element_loglevel, event->attr.loglevel);
-       if (ret) {
-               ret = LTTNG_ERR_SAVE_IO_FAIL;
-               goto end;
+       /* The log level is irrelevant if no "filtering" is enabled */
+       if (event->attr.loglevel_type != LTTNG_UST_LOGLEVEL_ALL) {
+               ret = config_writer_write_element_signed_int(writer,
+                               config_element_loglevel, event->attr.loglevel);
+               if (ret) {
+                       ret = LTTNG_ERR_SAVE_IO_FAIL;
+                       goto end;
+               }
        }
 
        if (event->filter_expression) {