diff options
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_event_perf.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c index 8354dc81a..4025c6034 100644 --- a/kernel/trace/trace_event_perf.c +++ b/kernel/trace/trace_event_perf.c @@ -222,7 +222,10 @@ int perf_trace_add(struct perf_event *p_event, int flags) void perf_trace_del(struct perf_event *p_event, int flags) { struct ftrace_event_call *tp_event = p_event->tp_event; - hlist_del_rcu(&p_event->hlist_entry); + if(!hlist_unhashed(&p_event->hlist_entry)) + hlist_del_rcu(&p_event->hlist_entry); + else + return; tp_event->class->reg(tp_event, TRACE_REG_PERF_DEL, p_event); } |