Messages in this thread Patch in this message | | | Date | Thu, 03 Mar 2022 16:48:33 -0500 | From | Steven Rostedt <> | Subject | [PATCH 1/4 v2] tracing: Allow custom events to be added to the tracefs directory |
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From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
Allow custom events to be added to the events directory in the tracefs file system. For example, a module could be installed that attaches to an event and wants to be enabled and disabled via the tracefs file system. It would use trace_add_event_call() to add the event to the tracefs directory, and trace_remove_event_call() to remove it.
Make both those functions EXPORT_SYMBOL_GPL().
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> --- kernel/trace/trace_events.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 3147614c1812..38afd66d80e3 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -2758,6 +2758,7 @@ int trace_add_event_call(struct trace_event_call *call) mutex_unlock(&trace_types_lock); return ret; } +EXPORT_SYMBOL_GPL(trace_add_event_call); /* * Must be called under locking of trace_types_lock, event_mutex and @@ -2819,6 +2820,7 @@ int trace_remove_event_call(struct trace_event_call *call) return ret; } +EXPORT_SYMBOL_GPL(trace_remove_event_call); #define for_each_event(event, start, end) \ for (event = start; \ -- 2.34.1
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