8 files changed, 66 insertions, 3 deletions
diff --git a/cpukit/include/sys/_ffcounter.h b/cpukit/include/sys/_ffcounter.h
index d83c48cd44..802c7d3224 100644
--- a/cpukit/include/sys/_ffcounter.h
+++ b/cpukit/include/sys/_ffcounter.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSScoreTimecounter
+ *
+ * @brief This header file provides interfaces of the feed-forward clock
+ *   counter.
+ */
+
 /*-
  * Copyright (c) 2011 The University of Melbourne
  * All rights reserved.
diff --git a/cpukit/include/sys/endian.h b/cpukit/include/sys/endian.h
index 0849a6a90b..cdd6201736 100644
--- a/cpukit/include/sys/endian.h
+++ b/cpukit/include/sys/endian.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSAPISystemLibrary
+ *
+ * @brief This header file provides interfaces of the system endianness
+ *   support.
+ */
+
 /*-
  * Copyright (c) 2002 Thomas Moestl <tmm@FreeBSD.org>
  * All rights reserved.
diff --git a/cpukit/include/sys/priority.h b/cpukit/include/sys/priority.h
index 855edb63c2..37d0d938dc 100644
--- a/cpukit/include/sys/priority.h
+++ b/cpukit/include/sys/priority.h
@@ -1,3 +1,11 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSAPISystemLibrary
+ *
+ * @brief This header file provides interfaces of the process priority support.
+ */
+
 /*-
  * SPDX-License-Identifier: BSD-4-Clause
  *
diff --git a/cpukit/include/sys/statvfs.h b/cpukit/include/sys/statvfs.h
index 52d8e9d3fa..655f9a596c 100644
--- a/cpukit/include/sys/statvfs.h
+++ b/cpukit/include/sys/statvfs.h
@@ -3,10 +3,11 @@
 /**
  * @file
  *
- * @brief Interface to the statvfs() Set of API Methods
+ * @ingroup RTEMSAPISystemLibrary
  *
- * This include file defines the interface to the statvfs() set of
- * API methods. The statvfs as defined by the SUS:
+ * @brief This header file provides the statvfs() and fstatvfs() interfaces.
+ *
+ * The statvfs() is defined by the SUS:
  *
  * - http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/statvfs.h.html
  */
diff --git a/cpukit/include/sys/timeffc.h b/cpukit/include/sys/timeffc.h
index c04de97f1d..13abd37a2b 100644
--- a/cpukit/include/sys/timeffc.h
+++ b/cpukit/include/sys/timeffc.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSScoreTimecounter
+ *
+ * @brief This header file provides interfaces of the feed-back and
+ *   feed-forward clock implementations.
+ */
+
 /*-
  * Copyright (c) 2011 The University of Melbourne
  * All rights reserved.
diff --git a/cpukit/include/sys/timepps.h b/cpukit/include/sys/timepps.h
index 030c734477..502d93833e 100644
--- a/cpukit/include/sys/timepps.h
+++ b/cpukit/include/sys/timepps.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSScoreTimecounter
+ *
+ * @brief This header file provides interfaces of the Pulse Per Second (PPS)
+ *   support.
+ */
+
 /*-
  * ----------------------------------------------------------------------------
  * "THE BEER-WARE LICENSE" (Revision 42):
diff --git a/cpukit/include/sys/timetc.h b/cpukit/include/sys/timetc.h
index 1ef58b378d..8f2537692c 100644
--- a/cpukit/include/sys/timetc.h
+++ b/cpukit/include/sys/timetc.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSScoreTimecounter
+ *
+ * @brief This header file provides interfaces of the timecounter
+ *   implementation.
+ */
+
 /*-
  * ----------------------------------------------------------------------------
  * "THE BEER-WARE LICENSE" (Revision 42):
diff --git a/cpukit/include/sys/timex.h b/cpukit/include/sys/timex.h
index 8e763bb30f..36b1fcdb5a 100644
--- a/cpukit/include/sys/timex.h
+++ b/cpukit/include/sys/timex.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSScoreTimecounter
+ *
+ * @brief This header file provides interfaces of the Network Time Protocol
+ *   (NTP) support.
+ */
+
 /*-
  ***********************************************************************
  *								       *