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-rw-r--r--monitor.c6
-rw-r--r--simpletrace.c4
-rw-r--r--simpletrace.h2
3 files changed, 9 insertions, 3 deletions
diff --git a/monitor.c b/monitor.c
index fbb678d789..260cc02963 100644
--- a/monitor.c
+++ b/monitor.c
@@ -549,7 +549,11 @@ static void do_change_trace_event_state(Monitor *mon, const QDict *qdict)
{
const char *tp_name = qdict_get_str(qdict, "name");
bool new_state = qdict_get_bool(qdict, "option");
- st_change_trace_event_state(tp_name, new_state);
+ int ret = st_change_trace_event_state(tp_name, new_state);
+
+ if (!ret) {
+ monitor_printf(mon, "unknown event name \"%s\"\n", tp_name);
+ }
}
static void do_trace_file(Monitor *mon, const QDict *qdict)
diff --git a/simpletrace.c b/simpletrace.c
index f849e42914..deb1e0742e 100644
--- a/simpletrace.c
+++ b/simpletrace.c
@@ -246,12 +246,14 @@ static TraceEvent* find_trace_event_by_name(const char *tname)
return NULL; /* indicates end of list reached without a match */
}
-void st_change_trace_event_state(const char *tname, bool tstate)
+bool st_change_trace_event_state(const char *tname, bool tstate)
{
TraceEvent *tp;
tp = find_trace_event_by_name(tname);
if (tp) {
tp->state = tstate;
+ return true;
}
+ return false;
}
diff --git a/simpletrace.h b/simpletrace.h
index cf3589774b..72614ec1d1 100644
--- a/simpletrace.h
+++ b/simpletrace.h
@@ -31,7 +31,7 @@ void trace5(TraceEventID event, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t
void trace6(TraceEventID event, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4, uint64_t x5, uint64_t x6);
void st_print_trace(FILE *stream, int (*stream_printf)(FILE *stream, const char *fmt, ...));
void st_print_trace_events(FILE *stream, int (*stream_printf)(FILE *stream, const char *fmt, ...));
-void st_change_trace_event_state(const char *tname, bool tstate);
+bool st_change_trace_event_state(const char *tname, bool tstate);
void st_print_trace_file_status(FILE *stream, int (*stream_printf)(FILE *stream, const char *fmt, ...));
void st_set_trace_file_enabled(bool enable);
bool st_set_trace_file(const char *file);