enum lttng_ust_loglevel_type req_type,
int req_loglevel)
{
- if (req_type == LTTNG_UST_LOGLEVEL_ALL)
- return 1;
if (!has_loglevel)
loglevel = TRACE_DEFAULT;
switch (req_type) {
/* Set transient enabler state to "enabled" */
session->tstate = 1;
- /* We need to sync enablers with session before activation. */
- lttng_session_sync_enablers(session);
/*
* Snapshot the number of events per channel to know the type of header
}
}
+ /* We need to sync enablers with session before activation. */
+ lttng_session_sync_enablers(session);
+
/* Set atomically the state to "active" */
CMM_ACCESS_ONCE(session->active) = 1;
CMM_ACCESS_ONCE(session->been_active) = 1;
sizeof(enabler->event_param));
enabler->chan = chan;
/* ctx left NULL */
- enabler->enabled = 1;
+ /*
+ * The "disable" event create comm field has been added to fix a
+ * race between event creation (of a started trace) and enabling
+ * filtering. New session daemon always set the "disable" field
+ * to 1, and are aware that they need to explicitly enable the
+ * event. Older session daemon (within same ABI) leave it at 0,
+ * and therefore we need to enable it here, keeping the original
+ * racy behavior.
+ */
+ enabler->enabled = !event_param->disabled;
cds_list_add(&enabler->node, &enabler->chan->session->enablers_head);
lttng_session_lazy_sync_enablers(enabler->chan->session);
return enabler;