message: added note for zero pivot functions: they are blocking!
diff: @@ -987,6 +987,9 @@ rocsparse_status rocsparse_zcsrmv(rocsparse_handle handle,
  * \p position can be in host or device memory. If no zero pivot has been found,
  * \p position is set to -1 and \ref rocsparse_status_success is returned instead.
  *
  + * \note \p rocsparse_csrsv_zero_pivot is a blocking function. It might influence
  + * performance negatively.
  + *
  * @param[in]
  * handle handle to the rocsparse library context queue.
  * @param[in]
  @@ -1918,6 +1921,9 @@ rocsparse_status rocsparse_zcsrmm(rocsparse_handle handle,
  * \p position can be in host or device memory. If no zero pivot has been found,
  * \p position is set to -1 and \ref rocsparse_status_success is returned instead.
  *
  + * \note \p rocsparse_csrilu0_zero_pivot is a blocking function. It might influence
  + * performance negatively.
  + *
  * @param[in]
  * handle handle to the rocsparse library context queue.
  * @param[in]
  