diff options
| -rw-r--r-- | kernel/marker.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/kernel/marker.c b/kernel/marker.c index ac8ec9ff85a..7d11393185f 100644 --- a/kernel/marker.c +++ b/kernel/marker.c @@ -650,6 +650,25 @@ static void disable_marker(struct marker *elem) */ } +/* + * is_marker_enabled - Check if a marker is enabled + * @channel: channel name + * @name: marker name + * + * Returns 1 if the marker is enabled, 0 if disabled. + */ +int is_marker_enabled(const char *channel, const char *name) +{ + struct marker_entry *entry; + + mutex_lock(&markers_mutex); + entry = get_marker(channel, name); + mutex_unlock(&markers_mutex); + + return entry && !!entry->refcount; +} +EXPORT_SYMBOL_GPL(is_marker_enabled); + /** * marker_update_probe_range - Update a probe range * @begin: beginning of the range |