score: Remove Thread_queue_Queue::operations field

Remove the Thread_queue_Queue::operations field to reduce the size of
this structure.  Add a thread queue operations parameter to the
_Thread_queue_First(), _Thread_queue_First_locked(),
_Thread_queue_Enqueue(), _Thread_queue_Dequeue() and
_Thread_queue_Flush() functions.  This is a preparation patch to reduce
the size of several synchronization objects.

31 files changed, 184 insertions, 219 deletions

diff --git a/cpukit/score/include/rtems/score/corebarrierimpl.h b/cpukit/score/include/rtems/score/corebarrierimpl.h
index e8b330dcb6..87ea545747 100644
--- a/cpukit/score/include/rtems/score/corebarrierimpl.h
+++ b/cpukit/score/include/rtems/score/corebarrierimpl.h
@@ -62,6 +62,8 @@ typedef enum {
  */
 #define CORE_BARRIER_STATUS_LAST CORE_BARRIER_TIMEOUT
 
+#define CORE_BARRIER_TQ_OPERATIONS &_Thread_queue_Operations_FIFO
+
 /**
  *  The following type defines the callout which the API provides
  *  to support global/multiprocessor operations on barriers.
@@ -150,6 +152,7 @@ uint32_t _CORE_barrier_Release(
 #define _CORE_barrier_Flush( _the_barrier, _remote_extract_callout, _status) \
   _Thread_queue_Flush( \
     &((_the_barrier)->Wait_queue), \
+    CORE_BARRIER_TQ_OPERATIONS, \
     (_remote_extract_callout), \
     (_status) \
   )
diff --git a/cpukit/score/include/rtems/score/coremsg.h b/cpukit/score/include/rtems/score/coremsg.h
index 84a3a97f0e..27443462fe 100644
--- a/cpukit/score/include/rtems/score/coremsg.h
+++ b/cpukit/score/include/rtems/score/coremsg.h
@@ -109,17 +109,6 @@ typedef enum {
   CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY
 }   CORE_message_queue_Disciplines;
 
-/**
- *  @brief Control block used to manage the attributes of each message queue.
- *
- *  The following defines the control block used to manage the
- *  attributes of each message queue.
- */
-typedef struct {
-  /** This field specifies the order in which blocking tasks will be ordered. */
-  CORE_message_queue_Disciplines  discipline;
-}   CORE_message_queue_Attributes;
-
 #if defined(RTEMS_SCORE_COREMSG_ENABLE_NOTIFICATION)
   /**
    *  @brief Type for a notification handler.
@@ -142,10 +131,12 @@ typedef struct {
    *  which are blocked waiting to receive a message from this queue.
    */
   Thread_queue_Control               Wait_queue;
-  /** This element is the set of attributes which define this instance's
-   *  behavior.
+
+  /**
+   * @brief The thread queue operations according to the blocking discipline.
    */
-  CORE_message_queue_Attributes      Attributes;
+  const Thread_queue_Operations     *operations;
+
   /** This element is maximum number of messages which may be pending
    *  at any given time.
    */
diff --git a/cpukit/score/include/rtems/score/coremsgimpl.h b/cpukit/score/include/rtems/score/coremsgimpl.h
index 382ce92815..407d3aee15 100644
--- a/cpukit/score/include/rtems/score/coremsgimpl.h
+++ b/cpukit/score/include/rtems/score/coremsgimpl.h
@@ -122,8 +122,7 @@ typedef void ( *CORE_message_queue_API_mp_support_callout )(
  *      based on the parameters passed.
  *
  *  @param[in] the_message_queue points to the message queue to initialize
- *  @param[in] the_message_queue_attributes points to the attributes that
- *         will be used with this message queue instance
+ *  @param[in] discipline the blocking discipline
  *  @param[in] maximum_pending_messages is the maximum number of messages
  *         that will be allowed to pend at any given time
  *  @param[in] maximum_message_size is the size of largest message that
@@ -134,10 +133,10 @@ typedef void ( *CORE_message_queue_API_mp_support_callout )(
  *         messages cannot be allocated.
  */
 bool _CORE_message_queue_Initialize(
-  CORE_message_queue_Control    *the_message_queue,
-  CORE_message_queue_Attributes *the_message_queue_attributes,
-  uint32_t                       maximum_pending_messages,
-  size_t                         maximum_message_size
+  CORE_message_queue_Control     *the_message_queue,
+  CORE_message_queue_Disciplines  discipline,
+  uint32_t                        maximum_pending_messages,
+  size_t                          maximum_message_size
 );
 
 /**
@@ -513,18 +512,6 @@ RTEMS_INLINE_ROUTINE
     _Chain_Get_unprotected( &the_message_queue->Pending_messages );
 }
 
-/**
- * This function returns true if the priority attribute is
- * enabled in the attribute_set and false otherwise.
- */
-RTEMS_INLINE_ROUTINE bool _CORE_message_queue_Is_priority(
-  CORE_message_queue_Attributes *the_attribute
-)
-{
-  return
-    (the_attribute->discipline == CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY);
-}
-
 #if defined(RTEMS_SCORE_COREMSG_ENABLE_NOTIFICATION)
   /**
    * This function returns true if notification is enabled on this message
@@ -584,7 +571,10 @@ RTEMS_INLINE_ROUTINE Thread_Control *_CORE_message_queue_Dequeue_receiver(
    *  There must be no pending messages if there is a thread waiting to
    *  receive a message.
    */
-  the_thread = _Thread_queue_First_locked( &the_message_queue->Wait_queue );
+  the_thread = _Thread_queue_First_locked(
+    &the_message_queue->Wait_queue,
+    the_message_queue->operations
+  );
   if ( the_thread == NULL ) {
     return NULL;
   }
@@ -600,7 +590,7 @@ RTEMS_INLINE_ROUTINE Thread_Control *_CORE_message_queue_Dequeue_receiver(
 
   _Thread_queue_Extract_critical(
     &the_message_queue->Wait_queue.Queue,
-    the_message_queue->Wait_queue.operations,
+    the_message_queue->operations,
     the_thread,
     lock_context
   );
diff --git a/cpukit/score/include/rtems/score/coremutex.h b/cpukit/score/include/rtems/score/coremutex.h
index ccf6066740..c9b30dd956 100644
--- a/cpukit/score/include/rtems/score/coremutex.h
+++ b/cpukit/score/include/rtems/score/coremutex.h
@@ -151,6 +151,12 @@ typedef struct {
    *  which are blocked waiting to lock the mutex.
    */
   Thread_queue_Control    Wait_queue;
+
+  /**
+   * @brief The thread queue operations according to the blocking discipline.
+   */
+  const Thread_queue_Operations *operations;
+
   /** This element is the set of attributes which define this instance's
    *  behavior.
    */
diff --git a/cpukit/score/include/rtems/score/coremuteximpl.h b/cpukit/score/include/rtems/score/coremuteximpl.h
index f57fdfcfd5..b22f4a7d5c 100644
--- a/cpukit/score/include/rtems/score/coremuteximpl.h
+++ b/cpukit/score/include/rtems/score/coremuteximpl.h
@@ -392,7 +392,7 @@ RTEMS_INLINE_ROUTINE bool _CORE_mutex_Is_fifo(
  *
  */
 RTEMS_INLINE_ROUTINE bool _CORE_mutex_Is_priority(
-  CORE_mutex_Attributes *the_attribute
+  const CORE_mutex_Attributes *the_attribute
 )
 {
   return the_attribute->discipline == CORE_MUTEX_DISCIPLINES_PRIORITY;
@@ -410,7 +410,7 @@ RTEMS_INLINE_ROUTINE bool _CORE_mutex_Is_priority(
  * @retval false The mutex is not using priority inheritance.
  */
 RTEMS_INLINE_ROUTINE bool _CORE_mutex_Is_inherit_priority(
-  CORE_mutex_Attributes *the_attribute
+  const CORE_mutex_Attributes *the_attribute
 )
 {
   return the_attribute->discipline == CORE_MUTEX_DISCIPLINES_PRIORITY_INHERIT;
@@ -428,7 +428,7 @@ RTEMS_INLINE_ROUTINE bool _CORE_mutex_Is_inherit_priority(
  * @retval false The mutex is not using priority ceiling.
  */
 RTEMS_INLINE_ROUTINE bool _CORE_mutex_Is_priority_ceiling(
-  CORE_mutex_Attributes *the_attribute
+  const CORE_mutex_Attributes *the_attribute
 )
 {
   return the_attribute->discipline == CORE_MUTEX_DISCIPLINES_PRIORITY_CEILING;
diff --git a/cpukit/score/include/rtems/score/corerwlockimpl.h b/cpukit/score/include/rtems/score/corerwlockimpl.h
index e619574d89..e41c6995aa 100644
--- a/cpukit/score/include/rtems/score/corerwlockimpl.h
+++ b/cpukit/score/include/rtems/score/corerwlockimpl.h
@@ -33,6 +33,8 @@ extern "C" {
  */
 /**@{**/
 
+#define CORE_RWLOCK_TQ_OPERATIONS &_Thread_queue_Operations_FIFO
+
 /**
  *  The following type defines the callout which the API provides
  *  to support global/multiprocessor operations on RWLocks.
diff --git a/cpukit/score/include/rtems/score/coresem.h b/cpukit/score/include/rtems/score/coresem.h
index 5f871f063e..44e17c3d20 100644
--- a/cpukit/score/include/rtems/score/coresem.h
+++ b/cpukit/score/include/rtems/score/coresem.h
@@ -56,10 +56,6 @@ typedef enum {
 typedef struct {
   /** This element indicates the maximum count this semaphore may have. */
   uint32_t                    maximum_count;
-  /** This field indicates whether threads waiting on the semaphore block in
-   *  FIFO or priority order.
-   */
-  CORE_semaphore_Disciplines  discipline;
 }   CORE_semaphore_Attributes;
 
 /**
@@ -71,6 +67,12 @@ typedef struct {
    *  which are blocked waiting to obtain the semaphore.
    */
   Thread_queue_Control        Wait_queue;
+
+  /**
+   * @brief The thread queue operations according to the blocking discipline.
+   */
+  const Thread_queue_Operations *operations;
+
   /** This element is the set of attributes which define this instance's
    *  behavior.
    */
diff --git a/cpukit/score/include/rtems/score/coresemimpl.h b/cpukit/score/include/rtems/score/coresemimpl.h
index a6a30bcc15..365345a219 100644
--- a/cpukit/score/include/rtems/score/coresemimpl.h
+++ b/cpukit/score/include/rtems/score/coresemimpl.h
@@ -86,13 +86,15 @@ typedef void ( *CORE_semaphore_API_mp_support_callout )(
  *  This routine initializes the semaphore based on the parameters passed.
  *
  *  @param[in] the_semaphore is the semaphore to initialize
- *  @param[in] the_semaphore_attributes define the behavior of this instance
+ *  @param[in] discipline the blocking discipline
+ *  @param[in] maximum_count the maximum count
  *  @param[in] initial_value is the initial count of the semaphore
  */
 void _CORE_semaphore_Initialize(
-  CORE_semaphore_Control          *the_semaphore,
-  const CORE_semaphore_Attributes *the_semaphore_attributes,
-  uint32_t                         initial_value
+  CORE_semaphore_Control     *the_semaphore,
+  CORE_semaphore_Disciplines  discipline,
+  uint32_t                    maximum_count,
+  uint32_t                    initial_value
 );
 
 RTEMS_INLINE_ROUTINE void _CORE_semaphore_Destroy(
@@ -133,7 +135,10 @@ RTEMS_INLINE_ROUTINE CORE_semaphore_Status _CORE_semaphore_Surrender(
 
   _Thread_queue_Acquire_critical( &the_semaphore->Wait_queue, lock_context );
 
-  the_thread = _Thread_queue_First_locked( &the_semaphore->Wait_queue );
+  the_thread = _Thread_queue_First_locked(
+    &the_semaphore->Wait_queue,
+    the_semaphore->operations
+  );
   if ( the_thread != NULL ) {
 #if defined(RTEMS_MULTIPROCESSING)
     _Thread_Dispatch_disable();
@@ -141,7 +146,7 @@ RTEMS_INLINE_ROUTINE CORE_semaphore_Status _CORE_semaphore_Surrender(
 
     _Thread_queue_Extract_critical(
       &the_semaphore->Wait_queue.Queue,
-      the_semaphore->Wait_queue.operations,
+      the_semaphore->operations,
       the_thread,
       lock_context
     );
@@ -187,27 +192,13 @@ RTEMS_INLINE_ROUTINE void _CORE_semaphore_Flush(
 {
   _Thread_queue_Flush(
     &the_semaphore->Wait_queue,
+    the_semaphore->operations,
     remote_extract_callout,
     status
   );
 }
 
 /**
- * This function returns true if the priority attribute is
- * enabled in the @a attribute_set and false otherwise.
- *
- * @param[in] the_attribute is the attribute set to test
- *
- * @return true if the priority attribute is enabled
- */
-RTEMS_INLINE_ROUTINE bool _CORE_semaphore_Is_priority(
-  const CORE_semaphore_Attributes *the_attribute
-)
-{
-   return ( the_attribute->discipline == CORE_SEMAPHORE_DISCIPLINES_PRIORITY );
-}
-
-/**
  * This routine returns the current count associated with the semaphore.
  *
  * @param[in] the_semaphore is the semaphore to obtain the count of
@@ -265,7 +256,7 @@ RTEMS_INLINE_ROUTINE void _CORE_semaphore_Seize(
   executing->Wait.id = id;
   _Thread_queue_Enqueue_critical(
     &the_semaphore->Wait_queue.Queue,
-    the_semaphore->Wait_queue.operations,
+    the_semaphore->operations,
     executing,
     STATES_WAITING_FOR_SEMAPHORE,
     timeout,
diff --git a/cpukit/score/include/rtems/score/threadq.h b/cpukit/score/include/rtems/score/threadq.h
index cc07daed57..fbd53293ee 100644
--- a/cpukit/score/include/rtems/score/threadq.h
+++ b/cpukit/score/include/rtems/score/threadq.h
@@ -244,15 +244,6 @@ typedef struct {
 } Thread_queue_Operations;
 
 /**
- *  The following enumerated type details all of the disciplines
- *  supported by the Thread Queue Handler.
- */
-typedef enum {
-  THREAD_QUEUE_DISCIPLINE_FIFO,     /* FIFO queue discipline */
-  THREAD_QUEUE_DISCIPLINE_PRIORITY  /* PRIORITY queue discipline */
-}   Thread_queue_Disciplines;
-
-/**
  *  This is the structure used to manage sets of tasks which are blocked
  *  waiting to acquire a resource.
  */
@@ -265,11 +256,6 @@ typedef struct {
 #if defined(RTEMS_SMP) && defined(RTEMS_PROFILING)
   SMP_lock_Stats Lock_stats;
 #endif
-
-  /**
-   * @brief The operations for the actual thread queue.
-   */
-  const Thread_queue_Operations *operations;
 } Thread_queue_Control;
 
 /**@}*/
diff --git a/cpukit/score/include/rtems/score/threadqimpl.h b/cpukit/score/include/rtems/score/threadqimpl.h
index 510f886844..82f7dc1796 100644
--- a/cpukit/score/include/rtems/score/threadqimpl.h
+++ b/cpukit/score/include/rtems/score/threadqimpl.h
@@ -173,7 +173,8 @@ typedef void ( *Thread_queue_Flush_callout )(
  *    + single case
  */
 Thread_Control *_Thread_queue_Dequeue(
-  Thread_queue_Control *the_thread_queue
+  Thread_queue_Control          *the_thread_queue,
+  const Thread_queue_Operations *operations
 );
 
 /**
@@ -196,6 +197,8 @@ Thread_Control *_Thread_queue_Dequeue(
  * #include <rtems/score/threadqimpl.h>
  * #include <rtems/score/statesimpl.h>
  *
+ * #define MUTEX_TQ_OPERATIONS &_Thread_queue_Operations_priority
+ *
  * typedef struct {
  *   Thread_queue_Control  Queue;
  *   Thread_Control       *owner;
@@ -216,7 +219,7 @@ Thread_Control *_Thread_queue_Dequeue(
  *   } else {
  *     _Thread_queue_Enqueue_critical(
  *       &mutex->Queue.Queue,
- *       mutex->Queue.operations,
+ *       MUTEX_TQ_OPERATIONS,
  *       executing,
  *       STATES_WAITING_FOR_MUTEX,
  *       WATCHDOG_NO_TIMEOUT,
@@ -251,11 +254,12 @@ void _Thread_queue_Enqueue_critical(
  * _Thread_queue_Enqueue_critical().
  */
 RTEMS_INLINE_ROUTINE void _Thread_queue_Enqueue(
-  Thread_queue_Control *the_thread_queue,
-  Thread_Control       *the_thread,
-  States_Control        state,
-  Watchdog_Interval     timeout,
-  uint32_t              timeout_code
+  Thread_queue_Control          *the_thread_queue,
+  const Thread_queue_Operations *operations,
+  Thread_Control                *the_thread,
+  States_Control                 state,
+  Watchdog_Interval              timeout,
+  uint32_t                       timeout_code
 )
 {
   ISR_lock_Context lock_context;
@@ -263,7 +267,7 @@ RTEMS_INLINE_ROUTINE void _Thread_queue_Enqueue(
   _Thread_queue_Acquire( the_thread_queue, &lock_context );
   _Thread_queue_Enqueue_critical(
     &the_thread_queue->Queue,
-    the_thread_queue->operations,
+    operations,
     the_thread,
     state,
     timeout,
@@ -400,19 +404,21 @@ void _Thread_queue_Extract_with_proxy(
  * lock is not released.
  *
  * @param[in] the_thread_queue The thread queue.
+ * @param[in] operations The thread queue operations.
  *
  * @retval NULL No thread is present on the thread queue.
  * @retval first The first thread on the thread queue according to the enqueue
  * order.
  */
 RTEMS_INLINE_ROUTINE Thread_Control *_Thread_queue_First_locked(
-  Thread_queue_Control *the_thread_queue
+  Thread_queue_Control          *the_thread_queue,
+  const Thread_queue_Operations *operations
 )
 {
   Thread_queue_Heads *heads = the_thread_queue->Queue.heads;
 
   if ( heads != NULL ) {
-    return ( *the_thread_queue->operations->first )( heads );
+    return ( *operations->first )( heads );
   } else {
     return NULL;
   }
@@ -429,7 +435,8 @@ RTEMS_INLINE_ROUTINE Thread_Control *_Thread_queue_First_locked(
  * order.
  */
 Thread_Control *_Thread_queue_First(
-  Thread_queue_Control *the_thread_queue
+  Thread_queue_Control          *the_thread_queue,
+  const Thread_queue_Operations *operations
 );
 
 /**
@@ -439,76 +446,41 @@ Thread_Control *_Thread_queue_First(
  *  and cancels any associated timeouts.
  *
  *  @param[in] the_thread_queue is the pointer to a threadq header
+ *  @param[in] operations The thread queue operations.
  *  @param[in] remote_extract_callout points to a method to invoke to 
  *             invoke when a remote thread is unblocked
  *  @param[in] status is the status which will be returned to
  *             all unblocked threads
  */
 void _Thread_queue_Flush(
-  Thread_queue_Control       *the_thread_queue,
-  Thread_queue_Flush_callout  remote_extract_callout,
-  uint32_t                    status
+  Thread_queue_Control          *the_thread_queue,
+  const Thread_queue_Operations *operations,
+  Thread_queue_Flush_callout     remote_extract_callout,
+  uint32_t                       status
 );
 
-/**
- *  @brief Initialize the_thread_queue.
- *
- *  This routine initializes the_thread_queue based on the
- *  discipline indicated in attribute_set.  The state set on
- *  threads which block on the_thread_queue is state.
- *
- *  @param[in] the_thread_queue is the pointer to a threadq header
- *  @param[in] the_discipline is the queueing discipline
- */
-void _Thread_queue_Initialize(
-  Thread_queue_Control     *the_thread_queue,
-  Thread_queue_Disciplines  the_discipline
-);
+void _Thread_queue_Initialize( Thread_queue_Control *the_thread_queue );
 
 #if defined(RTEMS_SMP) && defined(RTEMS_PROFILING)
-  #define THREAD_QUEUE_FIFO_INITIALIZER( designator, name ) { \
+  #define THREAD_QUEUE_INITIALIZER( name ) \
+    { \
       .Queue = { \
         .heads = NULL, \
         .Lock = SMP_TICKET_LOCK_INITIALIZER, \
       }, \
-      .Lock_stats = SMP_LOCK_STATS_INITIALIZER( name ), \
-      .operations = &_Thread_queue_Operations_FIFO \
-    }
-
-  #define THREAD_QUEUE_PRIORITY_INITIALIZER( designator, name ) { \
-      .Queue = { \
-        .heads = NULL, \
-        .Lock = SMP_TICKET_LOCK_INITIALIZER, \
-      }, \
-      .Lock_stats = SMP_LOCK_STATS_INITIALIZER( name ), \
-      .operations = &_Thread_queue_Operations_priority \
+      .Lock_stats = SMP_LOCK_STATS_INITIALIZER( name ) \
     }
 #elif defined(RTEMS_SMP)
-  #define THREAD_QUEUE_FIFO_INITIALIZER( designator, name ) { \
+  #define THREAD_QUEUE_INITIALIZER( name ) \
+    { \
       .Queue = { \
         .heads = NULL, \
         .Lock = SMP_TICKET_LOCK_INITIALIZER, \
-      }, \
-      .operations = &_Thread_queue_Operations_FIFO \
-    }
-
-  #define THREAD_QUEUE_PRIORITY_INITIALIZER( designator, name ) { \
-      .Queue = { \
-        .heads = NULL, \
-        .Lock = SMP_TICKET_LOCK_INITIALIZER, \
-      }, \
-      .operations = &_Thread_queue_Operations_priority \
+      } \
     }
 #else
-  #define THREAD_QUEUE_FIFO_INITIALIZER( designator, name ) { \
-      .Queue = { .heads = NULL }, \
-      .operations = &_Thread_queue_Operations_FIFO \
-    }
-
-  #define THREAD_QUEUE_PRIORITY_INITIALIZER( designator, name ) { \
-      .Queue = { .heads = NULL }, \
-      .operations = &_Thread_queue_Operations_priority \
-    }
+  #define THREAD_QUEUE_INITIALIZER( name ) \
+    { .Queue = { .heads = NULL } }
 #endif
 
 RTEMS_INLINE_ROUTINE void _Thread_queue_Destroy(
diff --git a/cpukit/score/src/corebarrier.c b/cpukit/score/src/corebarrier.c
index eddf901934..5313a0f6c8 100644
--- a/cpukit/score/src/corebarrier.c
+++ b/cpukit/score/src/corebarrier.c
@@ -30,8 +30,5 @@ void _CORE_barrier_Initialize(
   the_barrier->Attributes                = *the_barrier_attributes;
   the_barrier->number_of_waiting_threads = 0;
 
-  _Thread_queue_Initialize(
-    &the_barrier->Wait_queue,
-    THREAD_QUEUE_DISCIPLINE_FIFO
-  );
+  _Thread_queue_Initialize( &the_barrier->Wait_queue );
 }
diff --git a/cpukit/score/src/corebarrierrelease.c b/cpukit/score/src/corebarrierrelease.c
index c6d29b9f03..ba02301616 100644
--- a/cpukit/score/src/corebarrierrelease.c
+++ b/cpukit/score/src/corebarrierrelease.c
@@ -23,6 +23,16 @@
 #include <rtems/score/objectimpl.h>
 #include <rtems/score/threadqimpl.h>
 
+static Thread_Control *_CORE_barrier_Dequeue(
+  CORE_barrier_Control *the_barrier
+)
+{
+  return _Thread_queue_Dequeue(
+    &the_barrier->Wait_queue,
+    CORE_BARRIER_TQ_OPERATIONS
+  );
+}
+
 uint32_t _CORE_barrier_Release(
   CORE_barrier_Control                *the_barrier,
 #if defined(RTEMS_MULTIPROCESSING)
@@ -38,7 +48,7 @@ uint32_t _CORE_barrier_Release(
   uint32_t        count;
 
   count = 0;
-  while ( (the_thread = _Thread_queue_Dequeue(&the_barrier->Wait_queue)) ) {
+  while ( ( the_thread = _CORE_barrier_Dequeue( the_barrier ) ) ) {
 #if defined(RTEMS_MULTIPROCESSING)
     if ( !_Objects_Is_local_id( the_thread->Object.id ) )
       (*api_barrier_mp_support) ( the_thread, id );
diff --git a/cpukit/score/src/corebarrierwait.c b/cpukit/score/src/corebarrierwait.c
index b7f424d03d..4fadc03d9b 100644
--- a/cpukit/score/src/corebarrierwait.c
+++ b/cpukit/score/src/corebarrierwait.c
@@ -51,7 +51,7 @@ void _CORE_barrier_Wait(
 
   _Thread_queue_Enqueue_critical(
     &the_barrier->Wait_queue.Queue,
-    the_barrier->Wait_queue.operations,
+    CORE_BARRIER_TQ_OPERATIONS,
     executing,
     STATES_WAITING_FOR_BARRIER,
     timeout,
diff --git a/cpukit/score/src/coremsg.c b/cpukit/score/src/coremsg.c
index ae2bc753c7..b184585964 100644
--- a/cpukit/score/src/coremsg.c
+++ b/cpukit/score/src/coremsg.c
@@ -43,10 +43,10 @@ static inline bool size_t_mult32_with_overflow(
 }
 
 bool _CORE_message_queue_Initialize(
-  CORE_message_queue_Control    *the_message_queue,
-  CORE_message_queue_Attributes *the_message_queue_attributes,
-  uint32_t                       maximum_pending_messages,
-  size_t                         maximum_message_size
+  CORE_message_queue_Control     *the_message_queue,
+  CORE_message_queue_Disciplines  discipline,
+  uint32_t                        maximum_pending_messages,
+  size_t                          maximum_message_size
 )
 {
   size_t message_buffering_required = 0;
@@ -108,11 +108,13 @@ bool _CORE_message_queue_Initialize(
 
   _Chain_Initialize_empty( &the_message_queue->Pending_messages );
 
-  _Thread_queue_Initialize(
-    &the_message_queue->Wait_queue,
-    _CORE_message_queue_Is_priority( the_message_queue_attributes ) ?
-       THREAD_QUEUE_DISCIPLINE_PRIORITY : THREAD_QUEUE_DISCIPLINE_FIFO
-  );
+  _Thread_queue_Initialize( &the_message_queue->Wait_queue );
+
+  if ( discipline == CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY ) {
+    the_message_queue->operations = &_Thread_queue_Operations_priority;
+  } else {
+    the_message_queue->operations = &_Thread_queue_Operations_FIFO;
+  }
 
   return true;
 }
diff --git a/cpukit/score/src/coremsgclose.c b/cpukit/score/src/coremsgclose.c
index e0d370d512..60b6c9225b 100644
--- a/cpukit/score/src/coremsgclose.c
+++ b/cpukit/score/src/coremsgclose.c
@@ -36,6 +36,7 @@ void _CORE_message_queue_Close(
 
   _Thread_queue_Flush(
     &the_message_queue->Wait_queue,
+    the_message_queue->operations,
     remote_extract_callout,
     status
   );
diff --git a/cpukit/score/src/coremsgseize.c b/cpukit/score/src/coremsgseize.c
index b6ba8e9e32..9d26fb1235 100644
--- a/cpukit/score/src/coremsgseize.c
+++ b/cpukit/score/src/coremsgseize.c
@@ -74,7 +74,8 @@ void _CORE_message_queue_Seize(
        *  then we can avoid this dequeue.
        */
       the_thread = _Thread_queue_First_locked(
-        &the_message_queue->Wait_queue
+        &the_message_queue->Wait_queue,
+        the_message_queue->operations
       );
       if ( the_thread == NULL ) {
         _CORE_message_queue_Free_message_buffer(
@@ -108,7 +109,7 @@ void _CORE_message_queue_Seize(
       );
       _Thread_queue_Extract_critical(
         &the_message_queue->Wait_queue.Queue,
-        the_message_queue->Wait_queue.operations,
+        the_message_queue->operations,
         the_thread,
         lock_context
       );
@@ -133,7 +134,7 @@ void _CORE_message_queue_Seize(
 
   _Thread_queue_Enqueue_critical(
     &the_message_queue->Wait_queue.Queue,
-    the_message_queue->Wait_queue.operations,
+    the_message_queue->operations,
     executing,
     STATES_WAITING_FOR_MESSAGE,
     timeout,
diff --git a/cpukit/score/src/coremsgsubmit.c b/cpukit/score/src/coremsgsubmit.c
index d068cc4a05..5f61c5e644 100644
--- a/cpukit/score/src/coremsgsubmit.c
+++ b/cpukit/score/src/coremsgsubmit.c
@@ -133,7 +133,7 @@ CORE_message_queue_Status _CORE_message_queue_Submit(
 
     _Thread_queue_Enqueue_critical(
       &the_message_queue->Wait_queue.Queue,
-      the_message_queue->Wait_queue.operations,
+      the_message_queue->operations,
       executing,
       STATES_WAITING_FOR_MESSAGE,
       timeout,
diff --git a/cpukit/score/src/coremutex.c b/cpukit/score/src/coremutex.c
index 6bb535a8ec..88d487ca4b 100644
--- a/cpukit/score/src/coremutex.c
+++ b/cpukit/score/src/coremutex.c
@@ -86,11 +86,13 @@ CORE_mutex_Status _CORE_mutex_Initialize(
     the_mutex->holder     = NULL;
   }
 
-  _Thread_queue_Initialize(
-    &the_mutex->Wait_queue,
-    _CORE_mutex_Is_fifo( the_mutex_attributes ) ?
-      THREAD_QUEUE_DISCIPLINE_FIFO : THREAD_QUEUE_DISCIPLINE_PRIORITY
-  );
+  _Thread_queue_Initialize( &the_mutex->Wait_queue );
+
+  if ( _CORE_mutex_Is_priority( the_mutex_attributes ) ) {
+    the_mutex->operations = &_Thread_queue_Operations_priority;
+  } else {
+    the_mutex->operations = &_Thread_queue_Operations_FIFO;
+  }
 
   return CORE_MUTEX_STATUS_SUCCESSFUL;
 }
diff --git a/cpukit/score/src/coremutexflush.c b/cpukit/score/src/coremutexflush.c
index 3a6090102d..c487652daa 100644
--- a/cpukit/score/src/coremutexflush.c
+++ b/cpukit/score/src/coremutexflush.c
@@ -31,6 +31,7 @@ void _CORE_mutex_Flush(
 {
   _Thread_queue_Flush(
     &the_mutex->Wait_queue,
+    the_mutex->operations,
     remote_extract_callout,
     status
   );
diff --git a/cpukit/score/src/coremutexseize.c b/cpukit/score/src/coremutexseize.c
index 8059659a42..fa45151d0b 100644
--- a/cpukit/score/src/coremutexseize.c
+++ b/cpukit/score/src/coremutexseize.c
@@ -84,7 +84,7 @@ void _CORE_mutex_Seize_interrupt_blocking(
 
   _Thread_queue_Enqueue_critical(
     &the_mutex->Wait_queue.Queue,
-    the_mutex->Wait_queue.operations,
+    the_mutex->operations,
     executing,
     STATES_WAITING_FOR_MUTEX,
     timeout,
diff --git a/cpukit/score/src/coremutexsurrender.c b/cpukit/score/src/coremutexsurrender.c
index b4e69c8698..744adc5eb8 100644
--- a/cpukit/score/src/coremutexsurrender.c
+++ b/cpukit/score/src/coremutexsurrender.c
@@ -178,7 +178,13 @@ CORE_mutex_Status _CORE_mutex_Surrender(
    *  Now we check if another thread was waiting for this mutex.  If so,
    *  transfer the mutex to that thread.
    */
-  if ( ( the_thread = _Thread_queue_First_locked( &the_mutex->Wait_queue ) ) ) {
+  if (
+    ( the_thread = _Thread_queue_First_locked(
+        &the_mutex->Wait_queue,
+        the_mutex->operations
+      )
+    )
+  ) {
     bool unblock;
 
     /*
@@ -189,7 +195,7 @@ CORE_mutex_Status _CORE_mutex_Surrender(
      */
     unblock = _Thread_queue_Extract_locked(
       &the_mutex->Wait_queue.Queue,
-      the_mutex->Wait_queue.operations,
+      the_mutex->operations,
       the_thread
     );
 
diff --git a/cpukit/score/src/corerwlock.c b/cpukit/score/src/corerwlock.c
index 8b74c4119c..23bb5e29e3 100644
--- a/cpukit/score/src/corerwlock.c
+++ b/cpukit/score/src/corerwlock.c
@@ -34,8 +34,5 @@ void _CORE_RWLock_Initialize(
   the_rwlock->number_of_readers = 0;
   the_rwlock->current_state = CORE_RWLOCK_UNLOCKED;
 
-  _Thread_queue_Initialize(
-    &the_rwlock->Wait_queue,
-    THREAD_QUEUE_DISCIPLINE_FIFO
-  );
+  _Thread_queue_Initialize( &the_rwlock->Wait_queue );
 }
diff --git a/cpukit/score/src/corerwlockobtainread.c b/cpukit/score/src/corerwlockobtainread.c
index 73ebddf2df..97d7b9e513 100644
--- a/cpukit/score/src/corerwlockobtainread.c
+++ b/cpukit/score/src/corerwlockobtainread.c
@@ -51,7 +51,10 @@ void _CORE_RWLock_Obtain_for_reading(
 
       case CORE_RWLOCK_LOCKED_FOR_READING: {
         Thread_Control *waiter;
-        waiter = _Thread_queue_First_locked( &the_rwlock->Wait_queue );
+        waiter = _Thread_queue_First_locked(
+          &the_rwlock->Wait_queue,
+          CORE_RWLOCK_TQ_OPERATIONS
+        );
         if ( !waiter ) {
 	  the_rwlock->number_of_readers += 1;
 	  _Thread_queue_Release( &the_rwlock->Wait_queue, &lock_context );
@@ -84,7 +87,7 @@ void _CORE_RWLock_Obtain_for_reading(
 
     _Thread_queue_Enqueue_critical(
        &the_rwlock->Wait_queue.Queue,
-       the_rwlock->Wait_queue.operations,
+       CORE_RWLOCK_TQ_OPERATIONS,
        executing,
        STATES_WAITING_FOR_RWLOCK,
        timeout,
diff --git a/cpukit/score/src/corerwlockobtainwrite.c b/cpukit/score/src/corerwlockobtainwrite.c
index b5b31dcf27..28de842f9d 100644
--- a/cpukit/score/src/corerwlockobtainwrite.c
+++ b/cpukit/score/src/corerwlockobtainwrite.c
@@ -74,7 +74,7 @@ void _CORE_RWLock_Obtain_for_writing(
 
     _Thread_queue_Enqueue_critical(
        &the_rwlock->Wait_queue.Queue,
-       the_rwlock->Wait_queue.operations,
+       CORE_RWLOCK_TQ_OPERATIONS,
        executing,
        STATES_WAITING_FOR_RWLOCK,
        timeout,
diff --git a/cpukit/score/src/corerwlockrelease.c b/cpukit/score/src/corerwlockrelease.c
index bd39213c87..36fcf76088 100644
--- a/cpukit/score/src/corerwlockrelease.c
+++ b/cpukit/score/src/corerwlockrelease.c
@@ -64,7 +64,10 @@ CORE_RWLock_Status _CORE_RWLock_Release(
     the_rwlock->current_state = CORE_RWLOCK_UNLOCKED;
   _ISR_Enable( level );
 
-  next = _Thread_queue_Dequeue( &the_rwlock->Wait_queue );
+  next = _Thread_queue_Dequeue(
+    &the_rwlock->Wait_queue,
+    CORE_RWLOCK_TQ_OPERATIONS
+  );
 
   if ( next ) {
     if ( next->Wait.option == CORE_RWLOCK_THREAD_WAITING_FOR_WRITE ) {
@@ -82,7 +85,10 @@ CORE_RWLock_Status _CORE_RWLock_Release(
      * Now see if more readers can be let go.
      */
     while ( 1 ) {
-      next = _Thread_queue_First( &the_rwlock->Wait_queue );
+      next = _Thread_queue_First(
+        &the_rwlock->Wait_queue,
+        CORE_RWLOCK_TQ_OPERATIONS
+      );
       if ( !next ||
            next->Wait.option == CORE_RWLOCK_THREAD_WAITING_FOR_WRITE )
         return CORE_RWLOCK_SUCCESSFUL;
diff --git a/cpukit/score/src/coresem.c b/cpukit/score/src/coresem.c
index 2475c349a7..db2d47f872 100644
--- a/cpukit/score/src/coresem.c
+++ b/cpukit/score/src/coresem.c
@@ -21,18 +21,21 @@
 #include <rtems/score/coresemimpl.h>
 
 void _CORE_semaphore_Initialize(
-  CORE_semaphore_Control          *the_semaphore,
-  const CORE_semaphore_Attributes *the_semaphore_attributes,
-  uint32_t                         initial_value
+  CORE_semaphore_Control     *the_semaphore,
+  CORE_semaphore_Disciplines  discipline,
+  uint32_t                    maximum_count,
+  uint32_t                    initial_value
 )
 {
 
-  the_semaphore->Attributes = *the_semaphore_attributes;
-  the_semaphore->count      = initial_value;
+  the_semaphore->Attributes.maximum_count = maximum_count;
+  the_semaphore->count = initial_value;
 
-  _Thread_queue_Initialize(
-    &the_semaphore->Wait_queue,
-    _CORE_semaphore_Is_priority( the_semaphore_attributes ) ?
-              THREAD_QUEUE_DISCIPLINE_PRIORITY : THREAD_QUEUE_DISCIPLINE_FIFO
-  );
+  _Thread_queue_Initialize( &the_semaphore->Wait_queue );
+
+  if ( discipline == CORE_SEMAPHORE_DISCIPLINES_PRIORITY ) {
+    the_semaphore->operations = &_Thread_queue_Operations_priority;
+  } else {
+    the_semaphore->operations = &_Thread_queue_Operations_FIFO;
+  }
 }
diff --git a/cpukit/score/src/mpci.c b/cpukit/score/src/mpci.c
index 3929d78a09..8e93d74dd9 100644
--- a/cpukit/score/src/mpci.c
+++ b/cpukit/score/src/mpci.c
@@ -54,7 +54,8 @@ const rtems_multiprocessing_table
  */
 CORE_semaphore_Control _MPCI_Semaphore;
 
-Thread_queue_Control _MPCI_Remote_blocked_threads;
+Thread_queue_Control _MPCI_Remote_blocked_threads =
+  THREAD_QUEUE_INITIALIZER( "MPCI Remote Blocked Threads" );
 
 MPCI_Control *_MPCI_table;
 
@@ -85,7 +86,6 @@ static void _MPCI_Handler_early_initialization( void )
 
 static void _MPCI_Handler_initialization( void )
 {
-  CORE_semaphore_Attributes   attributes;
   MPCI_Control               *users_mpci_table;
 
   _Objects_MP_Handler_initialization();
@@ -117,18 +117,12 @@ static void _MPCI_Handler_initialization( void )
    *  Create the counting semaphore used by the MPCI Receive Server.
    */
 
-  attributes.discipline = CORE_SEMAPHORE_DISCIPLINES_FIFO;
-
   _CORE_semaphore_Initialize(
     &_MPCI_Semaphore,
-    &attributes,              /* the_semaphore_attributes */
+    CORE_SEMAPHORE_DISCIPLINES_FIFO,
+    0xffffffff,
     0                         /* initial_value */
   );
-
-  _Thread_queue_Initialize(
-    &_MPCI_Remote_blocked_threads,
-    THREAD_QUEUE_DISCIPLINE_FIFO
-  );
 }
 
 static void _MPCI_Create_server( void )
@@ -262,6 +256,7 @@ uint32_t   _MPCI_Send_request_packet (
 
     _Thread_queue_Enqueue(
       &_MPCI_Remote_blocked_threads,
+      &_Thread_queue_Operations_FIFO,
       executing,
       STATES_WAITING_FOR_RPC_REPLY | extra_state,
       the_packet->timeout,
diff --git a/cpukit/score/src/threadq.c b/cpukit/score/src/threadq.c
index 372a07d64c..f8f18ed41f 100644
--- a/cpukit/score/src/threadq.c
+++ b/cpukit/score/src/threadq.c
@@ -79,22 +79,8 @@ RBTree_Compare_result _Thread_queue_Compare_priority(
   return ( left_prio > right_prio ) - ( left_prio < right_prio );
 }
 
-void _Thread_queue_Initialize(
-  Thread_queue_Control     *the_thread_queue,
-  Thread_queue_Disciplines  the_discipline
-)
+void _Thread_queue_Initialize( Thread_queue_Control *the_thread_queue )
 {
-  const Thread_queue_Operations *operations;
-
-  if ( the_discipline == THREAD_QUEUE_DISCIPLINE_PRIORITY ) {
-    operations = &_Thread_queue_Operations_priority;
-  } else {
-    _Assert( the_discipline == THREAD_QUEUE_DISCIPLINE_FIFO );
-    operations = &_Thread_queue_Operations_FIFO;
-  }
-
-  the_thread_queue->operations = operations;
-
   _Thread_queue_Queue_initialize( &the_thread_queue->Queue );
 #if defined(RTEMS_SMP)
   _SMP_lock_Stats_initialize( &the_thread_queue->Lock_stats, "Thread Queue" );
diff --git a/cpukit/score/src/threadqenqueue.c b/cpukit/score/src/threadqenqueue.c
index 07618fc800..e7751359d7 100644
--- a/cpukit/score/src/threadqenqueue.c
+++ b/cpukit/score/src/threadqenqueue.c
@@ -193,21 +193,24 @@ void _Thread_queue_Extract( Thread_Control *the_thread )
   }
 }
 
-Thread_Control *_Thread_queue_Dequeue( Thread_queue_Control *the_thread_queue )
+Thread_Control *_Thread_queue_Dequeue(
+  Thread_queue_Control          *the_thread_queue,
+  const Thread_queue_Operations *operations
+)
 {
   ISR_lock_Context  lock_context;
   Thread_Control   *the_thread;
 
   _Thread_queue_Acquire( the_thread_queue, &lock_context );
 
-  the_thread = _Thread_queue_First_locked( the_thread_queue );
+  the_thread = _Thread_queue_First_locked( the_thread_queue, operations );
 
   if ( the_thread != NULL ) {
     _SMP_Assert( the_thread->Lock.current == &the_thread_queue->Queue.Lock );
 
     _Thread_queue_Extract_critical(
       &the_thread_queue->Queue,
-      the_thread_queue->operations,
+      operations,
       the_thread,
       &lock_context
     );
diff --git a/cpukit/score/src/threadqfirst.c b/cpukit/score/src/threadqfirst.c
index c46f005c3e..790ea8c59f 100644
--- a/cpukit/score/src/threadqfirst.c
+++ b/cpukit/score/src/threadqfirst.c
@@ -21,14 +21,15 @@
 #include <rtems/score/threadqimpl.h>
 
 Thread_Control *_Thread_queue_First(
-  Thread_queue_Control *the_thread_queue
+  Thread_queue_Control          *the_thread_queue,
+  const Thread_queue_Operations *operations
 )
 {
   Thread_Control   *the_thread;
   ISR_lock_Context  lock_context;
 
   _Thread_queue_Acquire( the_thread_queue, &lock_context );
-  the_thread = _Thread_queue_First_locked( the_thread_queue );
+  the_thread = _Thread_queue_First_locked( the_thread_queue, operations );
   _Thread_queue_Release( the_thread_queue, &lock_context );
 
   return the_thread;
diff --git a/cpukit/score/src/threadqflush.c b/cpukit/score/src/threadqflush.c
index 8dca3f9fd4..13d2a5b1ac 100644
--- a/cpukit/score/src/threadqflush.c
+++ b/cpukit/score/src/threadqflush.c
@@ -22,13 +22,14 @@
 #include <rtems/score/objectimpl.h>
 
 void _Thread_queue_Flush(
-  Thread_queue_Control       *the_thread_queue,
+  Thread_queue_Control          *the_thread_queue,
+  const Thread_queue_Operations *operations,
 #if defined(RTEMS_MULTIPROCESSING)
-  Thread_queue_Flush_callout  remote_extract_callout,
+  Thread_queue_Flush_callout     remote_extract_callout,
 #else
-  Thread_queue_Flush_callout  remote_extract_callout RTEMS_UNUSED,
+  Thread_queue_Flush_callout     remote_extract_callout RTEMS_UNUSED,
 #endif
-  uint32_t                    status
+  uint32_t                       status
 )
 {
   ISR_lock_Context  lock_context;
@@ -36,7 +37,14 @@ void _Thread_queue_Flush(
 
   _Thread_queue_Acquire( the_thread_queue, &lock_context );
 
-  while ( (the_thread = _Thread_queue_First_locked( the_thread_queue ) ) ) {
+  while (
+    (
+      the_thread = _Thread_queue_First_locked(
+        the_thread_queue,
+        operations
+      )
+    )
+  ) {
 #if defined(RTEMS_MULTIPROCESSING)
     if ( _Objects_Is_local_id( the_thread->Object.id ) )
 #endif
@@ -44,7 +52,7 @@ void _Thread_queue_Flush(
 
     _Thread_queue_Extract_critical(
       &the_thread_queue->Queue,
-      the_thread_queue->operations,
+      operations,
       the_thread,
       &lock_context
     );