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-rw-r--r--kernel/trace/trace_dynevent.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/kernel/trace/trace_dynevent.c b/kernel/trace/trace_dynevent.c
index f17a887abb66..dd1f43588d70 100644
--- a/kernel/trace/trace_dynevent.c
+++ b/kernel/trace/trace_dynevent.c
@@ -37,10 +37,17 @@ int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type)
char *system = NULL, *event, *p;
int ret = -ENOENT;
- if (argv[0][1] != ':')
- return -EINVAL;
+ if (argv[0][0] == '-') {
+ if (argv[0][1] != ':')
+ return -EINVAL;
+ event = &argv[0][2];
+ } else {
+ event = strchr(argv[0], ':');
+ if (!event)
+ return -EINVAL;
+ event++;
+ }
- event = &argv[0][2];
p = strchr(event, '/');
if (p) {
system = event;
@@ -69,7 +76,7 @@ static int create_dyn_event(int argc, char **argv)
struct dyn_event_operations *ops;
int ret;
- if (argv[0][0] == '-')
+ if (argv[0][0] == '-' || argv[0][0] == '!')
return dyn_event_release(argc, argv, NULL);
mutex_lock(&dyn_event_ops_mutex);