diff --git a/include/hip/hip_runtime_api.h b/include/hip/hip_runtime_api.h
index f62b5d389a..10158e06d4 100644
--- a/include/hip/hip_runtime_api.h
+++ b/include/hip/hip_runtime_api.h
@@ -3261,6 +3261,9 @@ hipError_t hipDrvPointerGetAttributes(unsigned int numAttributes, hipPointer_att
  *  @returns #hipSuccess, #hipErrorInvalidDevice, #hipErrorInvalidValue
  *
  *  @see
+ *
+ *  @note  This API is currently not supported on Linux.
+ *
  */
 hipError_t hipImportExternalSemaphore(hipExternalSemaphore_t* extSem_out,
                                       const hipExternalSemaphoreHandleDesc* semHandleDesc);
@@ -3275,6 +3278,9 @@ hipError_t hipImportExternalSemaphore(hipExternalSemaphore_t* extSem_out,
  *  @returns #hipSuccess, #hipErrorInvalidDevice, #hipErrorInvalidValue
  *
  *  @see
+ *
+ *  @note  This API is currently not supported on Linux.
+ *
  */
 hipError_t hipSignalExternalSemaphoresAsync(const hipExternalSemaphore_t* extSemArray,
                                             const hipExternalSemaphoreSignalParams* paramsArray,
@@ -3290,6 +3296,9 @@ hipError_t hipSignalExternalSemaphoresAsync(const hipExternalSemaphore_t* extSem
  *  @returns #hipSuccess, #hipErrorInvalidDevice, #hipErrorInvalidValue
  *
  *  @see
+ *
+ *  @note  This API is currently not supported on Linux.
+ *
  */
 hipError_t hipWaitExternalSemaphoresAsync(const hipExternalSemaphore_t* extSemArray,
                                               const hipExternalSemaphoreWaitParams* paramsArray,
@@ -3302,6 +3311,9 @@ hipError_t hipWaitExternalSemaphoresAsync(const hipExternalSemaphore_t* extSemAr
  *  @returns #hipSuccess, #hipErrorInvalidDevice, #hipErrorInvalidValue
  *
  *  @see
+ *
+ *  @note  This API is currently not supported on Linux.
+ *
  */
 hipError_t hipDestroyExternalSemaphore(hipExternalSemaphore_t extSem);
 
@@ -3314,6 +3326,7 @@ hipError_t hipDestroyExternalSemaphore(hipExternalSemaphore_t extSem);
 *  @returns #hipSuccess, #hipErrorInvalidDevice, #hipErrorInvalidValue
 *
 *  @see
+*
 */
 hipError_t hipImportExternalMemory(hipExternalMemory_t* extMem_out, const hipExternalMemoryHandleDesc* memHandleDesc);
 /**