tracing/stat: remove unappropriate safe walk on list
register_stat_tracer() uses list_for_each_entry_safe
to check whether a tracer is already present in the list.
But we don't delete anything from the list here, so
we don't need the safe version
[ Impact: cleanup list use is stat tracing ]
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c
index 17f20eb..c006437 100644
--- a/kernel/trace/trace_stat.c
+++ b/kernel/trace/trace_stat.c
@@ -316,7 +316,7 @@
int register_stat_tracer(struct tracer_stat *trace)
{
- struct stat_session *session, *node, *tmp;
+ struct stat_session *session, *node;
int ret;
if (!trace)
@@ -327,7 +327,7 @@
/* Already registered? */
mutex_lock(&all_stat_sessions_mutex);
- list_for_each_entry_safe(node, tmp, &all_stat_sessions, session_list) {
+ list_for_each_entry(node, &all_stat_sessions, session_list) {
if (node->ts == trace) {
mutex_unlock(&all_stat_sessions_mutex);
return -EINVAL;
