diff --git a/core/java/android/os/logcat/ILogcatManagerService.aidl b/core/java/android/os/logcat/ILogcatManagerService.aidl
index 02db2749bbe8a..29b4570ac71ed 100644
--- a/core/java/android/os/logcat/ILogcatManagerService.aidl
+++ b/core/java/android/os/logcat/ILogcatManagerService.aidl
@@ -19,10 +19,54 @@ package android.os.logcat;
 /**
  * @hide
  */
-interface ILogcatManagerService {
+oneway interface ILogcatManagerService {
+    /**
+     * The function is called by logd to notify LogcatManagerService
+     * that a client makes privileged log data access request.
+     *
+     * @param uid The UID of client who makes the request.
+     * @param gid The GID of client who makes the request.
+     * @param pid The PID of client who makes the request.
+     * @param fd  The FD (Socket) of client who makes the request.
+     */
     void startThread(in int uid, in int gid, in int pid, in int fd);
+
+
+    /**
+     * The function is called by logd to notify LogcatManagerService
+     * that a client finished the privileged log data access.
+     *
+     * @param uid The UID of client who makes the request.
+     * @param gid The GID of client who makes the request.
+     * @param pid The PID of client who makes the request.
+     * @param fd  The FD (Socket) of client who makes the request.
+     */
     void finishThread(in int uid, in int gid, in int pid, in int fd);
+
+
+    /**
+     * The function is called by UX component to notify
+     * LogcatManagerService that the user approved
+     * the privileged log data access.
+     *
+     * @param uid The UID of client who makes the request.
+     * @param gid The GID of client who makes the request.
+     * @param pid The PID of client who makes the request.
+     * @param fd  The FD (Socket) of client who makes the request.
+     */
     void approve(in int uid, in int gid, in int pid, in int fd);
+
+
+    /**
+     * The function is called by UX component to notify
+     * LogcatManagerService that the user declined
+     * the privileged log data access.
+     *
+     * @param uid The UID of client who makes the request.
+     * @param gid The GID of client who makes the request.
+     * @param pid The PID of client who makes the request.
+     * @param fd  The FD (Socket) of client who makes the request.
+     */
     void decline(in int uid, in int gid, in int pid, in int fd);
 }