libtracefs: Have tracefs_instance_tracers() return instance tracers
The tracefs_instance_tracers() was always returning the top level tracers
and not the tracers that were available for the given instance.
Link: https://lore.kernel.org/20240820173604.29693def@gandalf.local.home
Fixes: 185019c0 ("libtracefs: Add tracefs_instance_tracers() API")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
diff --git a/src/tracefs-events.c b/src/tracefs-events.c
index 83069aa..77d1ba8 100644
--- a/src/tracefs-events.c
+++ b/src/tracefs-events.c
@@ -1012,12 +1012,20 @@
*/
char **tracefs_instance_tracers(struct tracefs_instance *instance)
{
- const char *tracing_dir = NULL;
+ char *tracing_dir = NULL;
+ char **list;
+ int ret;
- if (instance)
- tracing_dir = instance->trace_dir;
+ if (instance) {
+ ret = asprintf(&tracing_dir, "%s/instances/%s", instance->trace_dir,
+ instance->name);
+ if (ret < 0)
+ return NULL;
+ }
- return list_tracers(tracing_dir);
+ list = list_tracers(tracing_dir);
+ free(tracing_dir);
+ return list;
}
static int load_events(struct tep_handle *tep,
