diff --git a/libs/binder/OS.h b/libs/binder/OS.h
index c5f0730..0035aeb 100644
--- a/libs/binder/OS.h
+++ b/libs/binder/OS.h
@@ -24,6 +24,9 @@
 
 namespace android::binder::os {
 
+void trace_begin(uint64_t tag, const char* name);
+void trace_end(uint64_t tag);
+
 status_t setNonBlocking(borrowed_fd fd);
 
 status_t getRandomBytes(uint8_t* data, size_t size);