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Diffstat (limited to 'kernel/trace/trace_dynevent.c')
-rw-r--r--kernel/trace/trace_dynevent.c35
1 files changed, 22 insertions, 13 deletions
diff --git a/kernel/trace/trace_dynevent.c b/kernel/trace/trace_dynevent.c
index 4f967d5cd917..dc971a68dda4 100644
--- a/kernel/trace/trace_dynevent.c
+++ b/kernel/trace/trace_dynevent.c
@@ -31,23 +31,31 @@ int dyn_event_register(struct dyn_event_operations *ops)
return 0;
}
-int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type)
+int dyn_event_release(const char *raw_command, struct dyn_event_operations *type)
{
struct dyn_event *pos, *n;
char *system = NULL, *event, *p;
- int ret = -ENOENT;
+ int argc, ret = -ENOENT;
+ char **argv;
+
+ argv = argv_split(GFP_KERNEL, raw_command, &argc);
+ if (!argv)
+ return -ENOMEM;
if (argv[0][0] == '-') {
- if (argv[0][1] != ':')
- return -EINVAL;
+ if (argv[0][1] != ':') {
+ ret = -EINVAL;
+ goto out;
+ }
event = &argv[0][2];
} else {
event = strchr(argv[0], ':');
- if (!event)
- return -EINVAL;
+ if (!event) {
+ ret = -EINVAL;
+ goto out;
+ }
event++;
}
- argc--; argv++;
p = strchr(event, '/');
if (p) {
@@ -63,7 +71,7 @@ int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type)
if (type && type != pos->ops)
continue;
if (!pos->ops->match(system, event,
- argc, (const char **)argv, pos))
+ argc - 1, (const char **)argv + 1, pos))
continue;
ret = pos->ops->free(pos);
@@ -71,21 +79,22 @@ int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type)
break;
}
mutex_unlock(&event_mutex);
-
+out:
+ argv_free(argv);
return ret;
}
-static int create_dyn_event(int argc, char **argv)
+static int create_dyn_event(const char *raw_command)
{
struct dyn_event_operations *ops;
int ret = -ENODEV;
- if (argv[0][0] == '-' || argv[0][0] == '!')
- return dyn_event_release(argc, argv, NULL);
+ if (raw_command[0] == '-' || raw_command[0] == '!')
+ return dyn_event_release(raw_command, NULL);
mutex_lock(&dyn_event_ops_mutex);
list_for_each_entry(ops, &dyn_event_ops_list, list) {
- ret = ops->create(argc, (const char **)argv);
+ ret = ops->create(raw_command);
if (!ret || ret != -ECANCELED)
break;
}