diff --git a/openmp/runtime/src/kmp.h b/openmp/runtime/src/kmp.h
index 04bf6c3b34da..7b565d12a930 100644
--- a/openmp/runtime/src/kmp.h
+++ b/openmp/runtime/src/kmp.h
@@ -521,13 +521,6 @@ enum library_type {
   library_throughput
 };
 
-#if KMP_OS_LINUX
-enum clock_function_type {
-  clock_function_gettimeofday,
-  clock_function_clock_gettime
-};
-#endif /* KMP_OS_LINUX */
-
 #if KMP_MIC_SUPPORTED
 enum mic_type { non_mic, mic1, mic2, mic3, dummy };
 #endif
@@ -3545,11 +3538,6 @@ extern int __kmp_hot_teams_mode;
 extern int __kmp_hot_teams_max_level;
 #endif
 
-#if KMP_OS_LINUX
-extern enum clock_function_type __kmp_clock_function;
-extern int __kmp_clock_function_param;
-#endif /* KMP_OS_LINUX */
-
 #if KMP_MIC_SUPPORTED
 extern enum mic_type __kmp_mic_type;
 #endif
diff --git a/openmp/runtime/src/kmp_global.cpp b/openmp/runtime/src/kmp_global.cpp
index 5017cd3de4be..ce803bb0d607 100644
--- a/openmp/runtime/src/kmp_global.cpp
+++ b/openmp/runtime/src/kmp_global.cpp
@@ -242,11 +242,6 @@ enum sched_type __kmp_sch_map[kmp_sched_upper - kmp_sched_lower_ext +
     // of public intel extension schedules
 };
 
-#if KMP_OS_LINUX
-enum clock_function_type __kmp_clock_function;
-int __kmp_clock_function_param;
-#endif /* KMP_OS_LINUX */
-
 #if KMP_MIC_SUPPORTED
 enum mic_type __kmp_mic_type = non_mic;
 #endif