[PATCH v2] score: Replace priority prepend it with an enum

Gedare Bloom gedare at rtems.org
Thu Aug 12 17:43:14 UTC 2021


looks good to me.

On Thu, Aug 12, 2021 at 8:26 AM Sebastian Huber
<sebastian.huber at embedded-brains.de> wrote:
>
> Use the new Priority_Group_order enum instead of a boolean to indicated if a
> priority should be inserted as the first or last node into its priority group.
> This makes the code more expressive.  It is also a bit more efficient since a
> branch in _Scheduler_Node_set_priority() is avoided and a simple bitwise or
> operation can be used.
> ---
> v2:
>
> Rename Priority_Flags in Priority_Group_order.
>
>  cpukit/include/rtems/posix/muteximpl.h        |  2 +-
>  cpukit/include/rtems/score/coremuteximpl.h    |  2 +-
>  cpukit/include/rtems/score/priorityimpl.h     | 44 ++++++++++++++-----
>  cpukit/include/rtems/score/schedulerimpl.h    | 12 ++++-
>  .../include/rtems/score/schedulernodeimpl.h   | 30 ++++++-------
>  cpukit/include/rtems/score/threadimpl.h       | 20 +++++----
>  cpukit/posix/src/pthreadsetschedparam.c       |  2 +-
>  cpukit/posix/src/pthreadsetschedprio.c        |  2 +-
>  cpukit/rtems/src/tasksetpriority.c            |  2 +-
>  cpukit/score/src/scheduleredfreleasejob.c     |  2 +-
>  cpukit/score/src/threadchangepriority.c       | 39 +++++++++-------
>  cpukit/score/src/threadqops.c                 | 18 ++++----
>  cpukit/score/src/threadrestart.c              |  4 +-
>  testsuites/smptests/smpscheduler03/test.c     | 33 +++++++-------
>  14 files changed, 126 insertions(+), 86 deletions(-)
>
> diff --git a/cpukit/include/rtems/posix/muteximpl.h b/cpukit/include/rtems/posix/muteximpl.h
> index 435b43634d..5d20bc1ef6 100644
> --- a/cpukit/include/rtems/posix/muteximpl.h
> +++ b/cpukit/include/rtems/posix/muteximpl.h
> @@ -273,7 +273,7 @@ RTEMS_INLINE_ROUTINE void _POSIX_Mutex_Set_priority(
>        owner,
>        &the_mutex->Priority_ceiling,
>        priority_ceiling,
> -      false,
> +      PRIORITY_GROUP_LAST,
>        queue_context
>      );
>      _Thread_Wait_release( owner, queue_context );
> diff --git a/cpukit/include/rtems/score/coremuteximpl.h b/cpukit/include/rtems/score/coremuteximpl.h
> index cbc1e720fb..426c4c5a95 100644
> --- a/cpukit/include/rtems/score/coremuteximpl.h
> +++ b/cpukit/include/rtems/score/coremuteximpl.h
> @@ -375,7 +375,7 @@ RTEMS_INLINE_ROUTINE void _CORE_ceiling_mutex_Set_priority(
>        owner,
>        &the_mutex->Priority_ceiling,
>        priority_ceiling,
> -      false,
> +      PRIORITY_GROUP_LAST,
>        queue_context
>      );
>      _Thread_Wait_release( owner, queue_context );
> diff --git a/cpukit/include/rtems/score/priorityimpl.h b/cpukit/include/rtems/score/priorityimpl.h
> index 7a14ec97b8..2895a0c4a5 100644
> --- a/cpukit/include/rtems/score/priorityimpl.h
> +++ b/cpukit/include/rtems/score/priorityimpl.h
> @@ -37,6 +37,29 @@ extern "C" {
>   * @{
>   */
>
> + /**
> +  * @brief The priority group order determines if a priority node is inserted
> +  *   as the first or last node into its priority group.
> +  *
> +  * The values of the enumerators matter.  The least significant bit of a
> +  * ::Priority_Control value is not used for the actual priority of a node.
> +  * During insertion the least significant bit is used to determine the
> +  * ordering within a priority group based on the enumerator values.
> +  */
> +typedef enum {
> +  /**
> +   * @brief Priority group first option requests that the priority node is
> +   *   inserted as the first node into its priority group.
> +   */
> +  PRIORITY_GROUP_FIRST = 0,
> +
> +  /**
> +   * @brief Priority group last option requests that the priority node is
> +   *   inserted as the last node into its priority group.
> +   */
> +  PRIORITY_GROUP_LAST = 1
> +} Priority_Group_order;
> +
>  /**
>   * @brief Initializes the priority actions empty.
>   *
> @@ -465,7 +488,7 @@ typedef void ( *Priority_Add_handler )(
>
>  typedef void ( *Priority_Change_handler )(
>    Priority_Aggregation *aggregation,
> -  bool                  prepend_it,
> +  Priority_Group_order  group_order,
>    Priority_Actions     *actions,
>    void                 *arg
>  );
> @@ -482,19 +505,19 @@ typedef void ( *Priority_Remove_handler )(
>   * This method does nothing.
>   *
>   * @param aggregation Is ignored by the method.
> - * @param prepend_it Is ignored by the method.
> + * @param group_order Is ignored by the method.
>   * @param actions Is ignored by the method.
>   * @param arg Is ignored by the method.
>   */
>  RTEMS_INLINE_ROUTINE void _Priority_Change_nothing(
>    Priority_Aggregation *aggregation,
> -  bool                  prepend_it,
> +  Priority_Group_order  group_order,
>    Priority_Actions     *actions,
>    void                 *arg
>  )
>  {
>    (void) aggregation;
> -  (void) prepend_it;
> +  (void) group_order;
>    (void) actions;
>    (void) arg;
>  }
> @@ -547,7 +570,7 @@ RTEMS_INLINE_ROUTINE void _Priority_Non_empty_insert(
>
>    if ( is_new_minimum ) {
>      aggregation->Node.priority = node->priority;
> -    ( *change )( aggregation, false, actions, arg );
> +    ( *change )( aggregation, PRIORITY_GROUP_LAST, actions, arg );
>    }
>  }
>
> @@ -619,7 +642,7 @@ RTEMS_INLINE_ROUTINE void _Priority_Extract(
>
>      if ( node->priority < min->priority ) {
>        aggregation->Node.priority = min->priority;
> -      ( *change )( aggregation, true, actions, arg );
> +      ( *change )( aggregation, PRIORITY_GROUP_FIRST, actions, arg );
>      }
>    }
>  }
> @@ -654,7 +677,7 @@ RTEMS_INLINE_ROUTINE void _Priority_Extract_non_empty(
>
>    if ( node->priority < min->priority ) {
>      aggregation->Node.priority = min->priority;
> -    ( *change )( aggregation, true, actions, arg );
> +    ( *change )( aggregation, PRIORITY_GROUP_FIRST, actions, arg );
>    }
>  }
>
> @@ -666,8 +689,7 @@ RTEMS_INLINE_ROUTINE void _Priority_Extract_non_empty(
>   *
>   * @param[in, out] aggregation The aggregation to change the node in.
>   * @param node The node that has a new priority and will be reinserted in the aggregation.
> - * @param prepend_it Indicates whether @a change should prepend if the minimal priority is
> - *      incorrectly set after the change.
> + * @param group_order The priority group order which may be used by @ change.
>   * @param actions The actions for the case that the minimal priority is incorrectly set
>   *      after the change.
>   * @param change Is called if the minimal priority is incorrectly set after the change.
> @@ -676,7 +698,7 @@ RTEMS_INLINE_ROUTINE void _Priority_Extract_non_empty(
>  RTEMS_INLINE_ROUTINE void _Priority_Changed(
>    Priority_Aggregation    *aggregation,
>    Priority_Node           *node,
> -  bool                     prepend_it,
> +  Priority_Group_order     group_order,
>    Priority_Actions        *actions,
>    Priority_Change_handler  change,
>    void                    *arg
> @@ -695,7 +717,7 @@ RTEMS_INLINE_ROUTINE void _Priority_Changed(
>
>    if ( min->priority != aggregation->Node.priority ) {
>      aggregation->Node.priority = min->priority;
> -    ( *change )( aggregation, prepend_it, actions, arg );
> +    ( *change )( aggregation, group_order, actions, arg );
>    }
>  }
>
> diff --git a/cpukit/include/rtems/score/schedulerimpl.h b/cpukit/include/rtems/score/schedulerimpl.h
> index 595d6291b4..24db4d7818 100644
> --- a/cpukit/include/rtems/score/schedulerimpl.h
> +++ b/cpukit/include/rtems/score/schedulerimpl.h
> @@ -1388,7 +1388,11 @@ RTEMS_INLINE_ROUTINE Status_Control _Scheduler_Set(
>        &new_scheduler_node->Thread.Scheduler_node.Chain
>      );
>
> -    _Scheduler_Node_set_priority( new_scheduler_node, priority, false );
> +    _Scheduler_Node_set_priority(
> +      new_scheduler_node,
> +      priority,
> +      PRIORITY_GROUP_LAST
> +    );
>
>      if ( _States_Is_ready( current_state ) ) {
>        _Scheduler_Unblock( the_thread );
> @@ -1398,7 +1402,11 @@ RTEMS_INLINE_ROUTINE Status_Control _Scheduler_Set(
>    }
>  #endif
>
> -  _Scheduler_Node_set_priority( new_scheduler_node, priority, false );
> +  _Scheduler_Node_set_priority(
> +    new_scheduler_node,
> +    priority,
> +    PRIORITY_GROUP_LAST
> +  );
>    _Scheduler_Update_priority( the_thread );
>    return STATUS_SUCCESSFUL;
>  }
> diff --git a/cpukit/include/rtems/score/schedulernodeimpl.h b/cpukit/include/rtems/score/schedulernodeimpl.h
> index 5d6f795912..9b5c632d86 100644
> --- a/cpukit/include/rtems/score/schedulernodeimpl.h
> +++ b/cpukit/include/rtems/score/schedulernodeimpl.h
> @@ -46,12 +46,6 @@ extern "C" {
>  #define SCHEDULER_NODE_OF_WAIT_PRIORITY( node ) \
>    RTEMS_CONTAINER_OF( node, Scheduler_Node, Wait.Priority )
>
> -/**
> - * @brief Priority append indicator for the priority control used for the
> - * scheduler node priority.
> - */
> -#define SCHEDULER_PRIORITY_APPEND_FLAG 1
> -
>  /**
>   * @brief Maps a priority value to support the append indicator.
>   */
> @@ -66,13 +60,13 @@ extern "C" {
>   * @brief Clears the priority append indicator bit.
>   */
>  #define SCHEDULER_PRIORITY_PURIFY( priority )  \
> -  ( ( priority ) & ~( (Priority_Control) SCHEDULER_PRIORITY_APPEND_FLAG ) )
> +  ( ( priority ) & ~( (Priority_Control) PRIORITY_GROUP_LAST ) )
>
>  /**
>   * @brief Returns the priority control with the append indicator bit set.
>   */
>  #define SCHEDULER_PRIORITY_APPEND( priority )  \
> -  ( ( priority ) | SCHEDULER_PRIORITY_APPEND_FLAG )
> +  ( ( priority ) | ( (Priority_Control) PRIORITY_GROUP_LAST ) )
>
>  /**
>   * @brief Returns true, if the item should be appended to its priority group,
> @@ -80,7 +74,7 @@ extern "C" {
>   * group.
>   */
>  #define SCHEDULER_PRIORITY_IS_APPEND( priority ) \
> -  ( ( ( priority ) & SCHEDULER_PRIORITY_APPEND_FLAG ) != 0 )
> +  ( ( ( priority ) & ( (Priority_Control) PRIORITY_GROUP_LAST ) ) != 0 )
>
>  /**
>   * @brief Initializes a node.
> @@ -173,14 +167,17 @@ RTEMS_INLINE_ROUTINE Priority_Control _Scheduler_Node_get_priority(
>  /**
>   * @brief Sets the priority of the node.
>   *
> - * @param[in, out] node The node to set the priority of.
> - * @param new_priority The new priority for @a node.
> - * @param prepend_it Indicates whether the new priority should be prepended.
> + * @param[in, out] node is the scheduler node.
> + *
> + * @param new_priority is the priority to set.
> + *
> + * @param group_order is the priority group order, see #PRIORITY_GROUP_FIRST
> + *   and #PRIORITY_GROUP_LAST.
>   */
>  RTEMS_INLINE_ROUTINE void _Scheduler_Node_set_priority(
> -  Scheduler_Node   *node,
> -  Priority_Control  new_priority,
> -  bool              prepend_it
> +  Scheduler_Node      *node,
> +  Priority_Control     new_priority,
> +  Priority_Group_order group_order
>  )
>  {
>  #if defined(RTEMS_SMP)
> @@ -189,8 +186,7 @@ RTEMS_INLINE_ROUTINE void _Scheduler_Node_set_priority(
>    seq = _SMP_sequence_lock_Write_begin( &node->Priority.Lock );
>  #endif
>
> -  new_priority |= ( prepend_it ? 0 : SCHEDULER_PRIORITY_APPEND_FLAG );
> -  node->Priority.value = new_priority;
> +  node->Priority.value = new_priority | ( (Priority_Control) group_order );
>
>  #if defined(RTEMS_SMP)
>    _SMP_sequence_lock_Write_end( &node->Priority.Lock, seq );
> diff --git a/cpukit/include/rtems/score/threadimpl.h b/cpukit/include/rtems/score/threadimpl.h
> index ecc8eee058..c4b6c941a4 100644
> --- a/cpukit/include/rtems/score/threadimpl.h
> +++ b/cpukit/include/rtems/score/threadimpl.h
> @@ -691,9 +691,10 @@ void _Thread_Priority_remove(
>   *
>   * @param the_thread The thread.
>   * @param[out] priority_node The thread priority node to change.
> - * @param prepend_it In case this is true, then the thread is prepended to
> - *   its priority group in its home scheduler instance, otherwise it is
> - *   appended.
> + * @param priority_group_order The priority group order determines if the
> + *   thread is inserted as the first or last node into the ready or scheduled
> + *   queues of its home scheduler, see #PRIORITY_GROUP_FIRST and
> + *   #PRIORITY_GROUP_LAST.
>   * @param queue_context The thread queue context to return an updated set of
>   *   threads for _Thread_Priority_update().  The thread queue context must be
>   *   initialized via _Thread_queue_Context_clear_priority_updates() before a
> @@ -704,7 +705,7 @@ void _Thread_Priority_remove(
>  void _Thread_Priority_changed(
>    Thread_Control       *the_thread,
>    Priority_Node        *priority_node,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Thread_queue_Context *queue_context
>  );
>
> @@ -718,9 +719,10 @@ void _Thread_Priority_changed(
>   * @param[out] priority_node The thread priority node to change.
>   * @param new_priority The new thread priority value of the thread priority
>   *   node to change.
> - * @param prepend_it In case this is true, then the thread is prepended to
> - *   its priority group in its home scheduler instance, otherwise it is
> - *   appended.
> + * @param priority_group_order The priority group order determines if the
> + *   thread is inserted as the first or last node into the ready or scheduled
> + *   queues of its home scheduler, see #PRIORITY_GROUP_FIRST and
> + *   #PRIORITY_GROUP_LAST.
>   * @param queue_context The thread queue context to return an updated set of
>   *   threads for _Thread_Priority_update().  The thread queue context must be
>   *   initialized via _Thread_queue_Context_clear_priority_updates() before a
> @@ -732,7 +734,7 @@ RTEMS_INLINE_ROUTINE void _Thread_Priority_change(
>    Thread_Control       *the_thread,
>    Priority_Node        *priority_node,
>    Priority_Control      new_priority,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Thread_queue_Context *queue_context
>  )
>  {
> @@ -740,7 +742,7 @@ RTEMS_INLINE_ROUTINE void _Thread_Priority_change(
>    _Thread_Priority_changed(
>      the_thread,
>      priority_node,
> -    prepend_it,
> +    priority_group_order,
>      queue_context
>    );
>  }
> diff --git a/cpukit/posix/src/pthreadsetschedparam.c b/cpukit/posix/src/pthreadsetschedparam.c
> index e9be24b417..1c207e7887 100644
> --- a/cpukit/posix/src/pthreadsetschedparam.c
> +++ b/cpukit/posix/src/pthreadsetschedparam.c
> @@ -96,7 +96,7 @@ static int _POSIX_Set_sched_param(
>      _Thread_Priority_changed(
>        the_thread,
>        &the_thread->Real_priority,
> -      false,
> +      PRIORITY_GROUP_LAST,
>        queue_context
>      );
>  #if defined(RTEMS_POSIX_API)
> diff --git a/cpukit/posix/src/pthreadsetschedprio.c b/cpukit/posix/src/pthreadsetschedprio.c
> index 72c7dab273..ae2add6232 100644
> --- a/cpukit/posix/src/pthreadsetschedprio.c
> +++ b/cpukit/posix/src/pthreadsetschedprio.c
> @@ -49,7 +49,7 @@ int pthread_setschedprio( pthread_t thread, int prio )
>      the_thread,
>      &the_thread->Real_priority,
>      new_priority,
> -    true,
> +    PRIORITY_GROUP_FIRST,
>      &queue_context
>    );
>
> diff --git a/cpukit/rtems/src/tasksetpriority.c b/cpukit/rtems/src/tasksetpriority.c
> index 50d1bc156c..532848ea52 100644
> --- a/cpukit/rtems/src/tasksetpriority.c
> +++ b/cpukit/rtems/src/tasksetpriority.c
> @@ -50,7 +50,7 @@ static rtems_status_code _RTEMS_tasks_Set_priority(
>      the_thread,
>      &the_thread->Real_priority,
>      core_new_priority,
> -    false,
> +    PRIORITY_GROUP_LAST,
>      queue_context
>    );
>    cpu_self = _Thread_queue_Dispatch_disable( queue_context );
> diff --git a/cpukit/score/src/scheduleredfreleasejob.c b/cpukit/score/src/scheduleredfreleasejob.c
> index 443fdaeed5..4cccffc952 100644
> --- a/cpukit/score/src/scheduleredfreleasejob.c
> +++ b/cpukit/score/src/scheduleredfreleasejob.c
> @@ -66,7 +66,7 @@ void _Scheduler_EDF_Release_job(
>      _Thread_Priority_changed(
>        the_thread,
>        priority_node,
> -      false,
> +      PRIORITY_GROUP_LAST,
>        queue_context
>      );
>    } else {
> diff --git a/cpukit/score/src/threadchangepriority.c b/cpukit/score/src/threadchangepriority.c
> index 13e9147916..ac2e9a6d0c 100644
> --- a/cpukit/score/src/threadchangepriority.c
> +++ b/cpukit/score/src/threadchangepriority.c
> @@ -31,13 +31,13 @@
>
>  static void _Thread_Set_scheduler_node_priority(
>    Priority_Aggregation *priority_aggregation,
> -  bool                  prepend_it
> +  Priority_Group_order  priority_group_order
>  )
>  {
>    _Scheduler_Node_set_priority(
>      SCHEDULER_NODE_OF_WAIT_PRIORITY_NODE( priority_aggregation ),
>      _Priority_Get_priority( priority_aggregation ),
> -    prepend_it
> +    priority_group_order
>    );
>  }
>
> @@ -55,7 +55,10 @@ static void _Thread_Priority_action_add(
>    the_thread = arg;
>
>    _Thread_Scheduler_add_wait_node( the_thread, scheduler_node );
> -  _Thread_Set_scheduler_node_priority( priority_aggregation, false );
> +  _Thread_Set_scheduler_node_priority(
> +    priority_aggregation,
> +    PRIORITY_GROUP_LAST
> +  );
>    _Priority_Set_action_type( priority_aggregation, PRIORITY_ACTION_ADD );
>    _Priority_Actions_add( priority_actions, priority_aggregation );
>  }
> @@ -73,7 +76,10 @@ static void _Thread_Priority_action_remove(
>    the_thread = arg;
>
>    _Thread_Scheduler_remove_wait_node( the_thread, scheduler_node );
> -  _Thread_Set_scheduler_node_priority( priority_aggregation, true );
> +  _Thread_Set_scheduler_node_priority(
> +    priority_aggregation,
> +    PRIORITY_GROUP_FIRST
> +  );
>    _Priority_Set_action_type( priority_aggregation, PRIORITY_ACTION_REMOVE );
>    _Priority_Actions_add( priority_actions, priority_aggregation );
>  }
> @@ -81,12 +87,15 @@ static void _Thread_Priority_action_remove(
>
>  static void _Thread_Priority_action_change(
>    Priority_Aggregation *priority_aggregation,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Priority_Actions     *priority_actions,
>    void                 *arg
>  )
>  {
> -  _Thread_Set_scheduler_node_priority( priority_aggregation, prepend_it );
> +  _Thread_Set_scheduler_node_priority(
> +    priority_aggregation,
> +    priority_group_order
> +  );
>  #if defined(RTEMS_SMP) || defined(RTEMS_DEBUG)
>    _Priority_Set_action_type( priority_aggregation, PRIORITY_ACTION_CHANGE );
>  #endif
> @@ -97,7 +106,7 @@ static void _Thread_Priority_do_perform_actions(
>    Thread_Control                *the_thread,
>    Thread_queue_Queue            *queue,
>    const Thread_queue_Operations *operations,
> -  bool                           prepend_it,
> +  Priority_Group_order           priority_group_order,
>    Thread_queue_Context          *queue_context
>  )
>  {
> @@ -162,7 +171,7 @@ static void _Thread_Priority_do_perform_actions(
>          _Priority_Changed(
>            priority_aggregation,
>            priority_action_node,
> -          prepend_it,
> +          priority_group_order,
>            &queue_context->Priority.Actions,
>            _Thread_Priority_action_change,
>            NULL
> @@ -214,7 +223,7 @@ void _Thread_Priority_perform_actions(
>        the_thread,
>        queue,
>        the_thread->Wait.operations,
> -      false,
> +      PRIORITY_GROUP_LAST,
>        queue_context
>      );
>
> @@ -244,7 +253,7 @@ static void _Thread_Priority_apply(
>    Thread_Control       *the_thread,
>    Priority_Node        *priority_action_node,
>    Thread_queue_Context *queue_context,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Priority_Action_type  priority_action_type
>  )
>  {
> @@ -263,7 +272,7 @@ static void _Thread_Priority_apply(
>      the_thread,
>      queue,
>      the_thread->Wait.operations,
> -    prepend_it,
> +    priority_group_order,
>      queue_context
>    );
>
> @@ -288,7 +297,7 @@ void _Thread_Priority_add(
>      the_thread,
>      priority_node,
>      queue_context,
> -    false,
> +    PRIORITY_GROUP_LAST,
>      PRIORITY_ACTION_ADD
>    );
>  }
> @@ -303,7 +312,7 @@ void _Thread_Priority_remove(
>      the_thread,
>      priority_node,
>      queue_context,
> -    true,
> +    PRIORITY_GROUP_FIRST,
>      PRIORITY_ACTION_REMOVE
>    );
>  }
> @@ -311,7 +320,7 @@ void _Thread_Priority_remove(
>  void _Thread_Priority_changed(
>    Thread_Control       *the_thread,
>    Priority_Node        *priority_node,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Thread_queue_Context *queue_context
>  )
>  {
> @@ -319,7 +328,7 @@ void _Thread_Priority_changed(
>      the_thread,
>      priority_node,
>      queue_context,
> -    prepend_it,
> +    priority_group_order,
>      PRIORITY_ACTION_CHANGE
>    );
>  }
> diff --git a/cpukit/score/src/threadqops.c b/cpukit/score/src/threadqops.c
> index d6ba9dad57..eb01002679 100644
> --- a/cpukit/score/src/threadqops.c
> +++ b/cpukit/score/src/threadqops.c
> @@ -700,7 +700,7 @@ static void _Thread_queue_Priority_inherit_do_priority_actions_remove(
>
>  static void _Thread_queue_Priority_inherit_do_priority_actions_change(
>    Priority_Aggregation *priority_aggregation,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Priority_Actions     *priority_actions,
>    void                 *arg
>  )
> @@ -787,7 +787,7 @@ static void _Thread_queue_Priority_inherit_priority_actions(
>          _Priority_Changed(
>            &priority_queue->Queue,
>            &scheduler_node->Wait.Priority.Node,
> -          false,
> +          PRIORITY_GROUP_LAST,
>            priority_actions,
>            _Thread_queue_Priority_inherit_do_priority_actions_change,
>            scheduler_node_of_owner
> @@ -884,7 +884,7 @@ static void _Thread_queue_Priority_inherit_do_initialize(
>
>  static void _Thread_queue_Priority_inherit_do_enqueue_change(
>    Priority_Aggregation *priority_aggregation,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Priority_Actions     *priority_actions,
>    void                 *arg
>  )
> @@ -1079,7 +1079,7 @@ static void _Thread_queue_Priority_inherit_do_extract_remove(
>
>  static void _Thread_queue_Priority_inherit_do_extract_change(
>    Priority_Aggregation *priority_aggregation,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Priority_Actions     *priority_actions,
>    void                 *arg
>  )
> @@ -1231,7 +1231,7 @@ static void _Thread_queue_Priority_inherit_do_surrender_add(
>    _Scheduler_Node_set_priority(
>      scheduler_node,
>      _Priority_Get_priority( priority_aggregation ),
> -    false
> +    PRIORITY_GROUP_LAST
>    );
>  }
>
> @@ -1254,7 +1254,7 @@ static void _Thread_queue_Priority_inherit_do_surrender_remove(
>
>  static void _Thread_queue_Priority_inherit_do_surrender_change(
>    Priority_Aggregation *priority_aggregation,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Priority_Actions     *priority_actions,
>    void                 *arg
>  )
> @@ -1270,14 +1270,14 @@ static void _Thread_queue_Priority_inherit_do_surrender_change(
>    _Scheduler_Node_set_priority(
>      SCHEDULER_NODE_OF_WAIT_PRIORITY( priority_aggregation ),
>      _Priority_Get_priority( priority_aggregation ),
> -    prepend_it
> +    priority_group_order
>    );
>  }
>
>  #if defined(RTEMS_SMP)
>  static void _Thread_queue_Priority_inherit_do_surrender_change_2(
>    Priority_Aggregation *priority_aggregation,
> -  bool                  prepend_it,
> +  Priority_Group_order  priority_group_order,
>    Priority_Actions     *priority_actions,
>    void                 *arg
>  )
> @@ -1285,7 +1285,7 @@ static void _Thread_queue_Priority_inherit_do_surrender_change_2(
>    _Scheduler_Node_set_priority(
>      SCHEDULER_NODE_OF_WAIT_PRIORITY( priority_aggregation ),
>      _Priority_Get_priority( priority_aggregation ),
> -    prepend_it
> +    priority_group_order
>    );
>  }
>  #endif
> diff --git a/cpukit/score/src/threadrestart.c b/cpukit/score/src/threadrestart.c
> index 79a154e3d3..4b1907a2d9 100644
> --- a/cpukit/score/src/threadrestart.c
> +++ b/cpukit/score/src/threadrestart.c
> @@ -70,7 +70,7 @@ static void _Thread_Raise_real_priority(
>        the_thread,
>        &the_thread->Real_priority,
>        priority,
> -      false,
> +      PRIORITY_GROUP_LAST,
>        &queue_context
>      );
>    }
> @@ -576,7 +576,7 @@ Status_Control _Thread_Restart(
>      the_thread,
>      &the_thread->Real_priority,
>      the_thread->Start.initial_priority,
> -    false,
> +    PRIORITY_GROUP_LAST,
>      &queue_context
>    );
>    _Thread_Wait_release( the_thread, &queue_context );
> diff --git a/testsuites/smptests/smpscheduler03/test.c b/testsuites/smptests/smpscheduler03/test.c
> index 3f6b9e3fd8..8411f3ca2c 100644
> --- a/testsuites/smptests/smpscheduler03/test.c
> +++ b/testsuites/smptests/smpscheduler03/test.c
> @@ -33,7 +33,7 @@ static Scheduler_SMP_Node *get_scheduler_node(Thread_Control *thread)
>  static void apply_priority(
>    Thread_Control *thread,
>    Priority_Control new_priority,
> -  bool prepend_it,
> +  Priority_Group_order priority_group_order,
>    Thread_queue_Context *queue_context
>  )
>  {
> @@ -49,7 +49,7 @@ static void apply_priority(
>      thread,
>      &thread->Real_priority,
>      new_priority,
> -    prepend_it,
> +    priority_group_order,
>      queue_context
>    );
>    _Thread_Wait_release(thread, queue_context);
> @@ -58,12 +58,12 @@ static void apply_priority(
>  static void change_priority(
>    Thread_Control *thread,
>    Priority_Control new_priority,
> -  bool prepend_it
> +  Priority_Group_order priority_group_order
>  )
>  {
>    Thread_queue_Context queue_context;
>
> -  apply_priority(thread, new_priority, prepend_it, &queue_context);
> +  apply_priority(thread, new_priority, priority_group_order, &queue_context);
>    _Thread_Priority_update(&queue_context);
>  }
>
> @@ -110,7 +110,7 @@ static void test_case_change_priority(
>    Scheduler_SMP_Node *executing_node,
>    Scheduler_SMP_Node_state start_state,
>    Priority_Control prio,
> -  bool prepend_it,
> +  Priority_Group_order priority_group_order,
>    Scheduler_SMP_Node_state new_state
>  )
>  {
> @@ -131,7 +131,7 @@ static void test_case_change_priority(
>    }
>    rtems_test_assert(executing_node->state == start_state);
>
> -  change_priority(executing, prio, prepend_it);
> +  change_priority(executing, prio, priority_group_order);
>    rtems_test_assert(executing_node->state == new_state);
>
>    change_priority(executing, 1, true);
> @@ -147,7 +147,10 @@ static const Scheduler_SMP_Node_state states[2] = {
>
>  static const Priority_Control priorities[2] = { 2, 5 };
>
> -static const bool prepend_it[2] = { true, false };
> +static const Priority_Group_order priority_group_order[2] = {
> +  PRIORITY_GROUP_FIRST,
> +  PRIORITY_GROUP_LAST
> +};
>
>  static void test_change_priority(void)
>  {
> @@ -165,13 +168,13 @@ static void test_change_priority(void)
>
>    for (i = 0; i < RTEMS_ARRAY_SIZE(states); ++i) {
>      for (j = 0; j < RTEMS_ARRAY_SIZE(priorities); ++j) {
> -      for (k = 0; k < RTEMS_ARRAY_SIZE(prepend_it); ++k) {
> +      for (k = 0; k < RTEMS_ARRAY_SIZE(priority_group_order); ++k) {
>          test_case_change_priority(
>            executing,
>            executing_node,
>            states[i],
>            priorities[j],
> -          prepend_it[k],
> +          priority_group_order[k],
>            states[j]
>          );
>        }
> @@ -186,7 +189,7 @@ static void update_priority_op(
>    Thread_Control *thread,
>    Scheduler_SMP_Node *scheduler_node,
>    Priority_Control new_priority,
> -  bool prepend_it
> +  Priority_Group_order priority_group_order
>  )
>  {
>    const Scheduler_Control *scheduler;
> @@ -194,7 +197,7 @@ static void update_priority_op(
>    ISR_lock_Context scheduler_lock_context;
>    Thread_queue_Context queue_context;
>
> -  apply_priority(thread, new_priority, prepend_it, &queue_context);
> +  apply_priority(thread, new_priority, priority_group_order, &queue_context);
>
>    _Thread_State_acquire( thread, &state_lock_context );
>    scheduler = _Thread_Scheduler_get_home( thread );
> @@ -216,7 +219,7 @@ static void test_case_update_priority_op(
>    Thread_Control *other,
>    Scheduler_SMP_Node_state start_state,
>    Priority_Control prio,
> -  bool prepend_it,
> +  Priority_Group_order priority_group_order,
>    Scheduler_SMP_Node_state new_state
>  )
>  {
> @@ -237,7 +240,7 @@ static void test_case_update_priority_op(
>    }
>    rtems_test_assert(executing_node->state == start_state);
>
> -  update_priority_op(executing, executing_node, prio, prepend_it);
> +  update_priority_op(executing, executing_node, prio, priority_group_order);
>    rtems_test_assert(executing_node->state == new_state);
>
>    if (start_state != new_state) {
> @@ -279,14 +282,14 @@ static void test_update_priority_op(void)
>
>    for (i = 0; i < RTEMS_ARRAY_SIZE(states); ++i) {
>      for (j = 0; j < RTEMS_ARRAY_SIZE(priorities); ++j) {
> -      for (k = 0; k < RTEMS_ARRAY_SIZE(prepend_it); ++k) {
> +      for (k = 0; k < RTEMS_ARRAY_SIZE(priority_group_order); ++k) {
>          test_case_update_priority_op(
>            executing,
>            executing_node,
>            other,
>            states[i],
>            priorities[j],
> -          prepend_it[k],
> +          priority_group_order[k],
>            states[j]
>          );
>        }
> --
> 2.26.2
>
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