api: Remove deprecated Notepads

Notepads where a feature of RTEMS' tasks that simply functioned in
the same way as POSIX keys or threaded local storage (TLS). They were
introduced well before per task variables, which are also deprecated,
and were barely used in favor of their POSIX alternatives.

In addition to their scarce usage, Notepads took up unnecessary memory.
For each task:

 - 16 32-bit integers were allocated.
 - A total of 64 bytes per task per thread.

This is especially critical in low memory and safety-critical applications.

They are also defined as uint32_t, and therefore are not guaranteed to
hold a pointer.

Lastly, they are not portable solutions for SMP and uniprocessor systems,
like POSIX keys and TLS.

updates #2493.

1 files changed, 1 insertions, 55 deletions

diff --git a/cpukit/rtems/src/taskmp.c b/cpukit/rtems/src/taskmp.c
index a1386d9bbb..ef76e1f7c4 100644
--- a/cpukit/rtems/src/taskmp.c
+++ b/cpukit/rtems/src/taskmp.c
@@ -64,10 +64,6 @@ void _RTEMS_tasks_MP_Send_process_packet (
     case RTEMS_TASKS_MP_RESUME_RESPONSE:
     case RTEMS_TASKS_MP_SET_PRIORITY_REQUEST:
     case RTEMS_TASKS_MP_SET_PRIORITY_RESPONSE:
-    case RTEMS_TASKS_MP_GET_NOTE_REQUEST:
-    case RTEMS_TASKS_MP_GET_NOTE_RESPONSE:
-    case RTEMS_TASKS_MP_SET_NOTE_REQUEST:
-    case RTEMS_TASKS_MP_SET_NOTE_RESPONSE:
       break;
   }
 }
@@ -80,9 +76,7 @@ void _RTEMS_tasks_MP_Send_process_packet (
 rtems_status_code _RTEMS_tasks_MP_Send_request_packet (
   RTEMS_tasks_MP_Remote_operations operation,
   Objects_Id                       task_id,
-  rtems_task_priority              new_priority,
-  uint32_t                         notepad,
-  uint32_t                         note
+  rtems_task_priority              new_priority
 )
 {
   RTEMS_tasks_MP_Packet *the_packet;
@@ -92,8 +86,6 @@ rtems_status_code _RTEMS_tasks_MP_Send_request_packet (
     case RTEMS_TASKS_MP_SUSPEND_REQUEST:
     case RTEMS_TASKS_MP_RESUME_REQUEST:
     case RTEMS_TASKS_MP_SET_PRIORITY_REQUEST:
-    case RTEMS_TASKS_MP_GET_NOTE_REQUEST:
-    case RTEMS_TASKS_MP_SET_NOTE_REQUEST:
 
       the_packet                    = _RTEMS_tasks_MP_Get_packet();
       the_packet->Prefix.the_class  = MP_PACKET_TASKS;
@@ -102,8 +94,6 @@ rtems_status_code _RTEMS_tasks_MP_Send_request_packet (
       the_packet->operation         = operation;
       the_packet->Prefix.id         = task_id;
       the_packet->the_priority      = new_priority;
-      the_packet->notepad           = notepad;
-      the_packet->note              = note;
 
       return _MPCI_Send_request_packet(
         _Objects_Get_node( task_id ),
@@ -118,8 +108,6 @@ rtems_status_code _RTEMS_tasks_MP_Send_request_packet (
     case RTEMS_TASKS_MP_SUSPEND_RESPONSE:
     case RTEMS_TASKS_MP_RESUME_RESPONSE:
     case RTEMS_TASKS_MP_SET_PRIORITY_RESPONSE:
-    case RTEMS_TASKS_MP_GET_NOTE_RESPONSE:
-    case RTEMS_TASKS_MP_SET_NOTE_RESPONSE:
       break;
 
   }
@@ -147,8 +135,6 @@ void _RTEMS_tasks_MP_Send_response_packet (
     case RTEMS_TASKS_MP_SUSPEND_RESPONSE:
     case RTEMS_TASKS_MP_RESUME_RESPONSE:
     case RTEMS_TASKS_MP_SET_PRIORITY_RESPONSE:
-    case RTEMS_TASKS_MP_GET_NOTE_RESPONSE:
-    case RTEMS_TASKS_MP_SET_NOTE_RESPONSE:
 
       the_packet = (RTEMS_tasks_MP_Packet *) the_thread->receive_packet;
 
@@ -170,8 +156,6 @@ void _RTEMS_tasks_MP_Send_response_packet (
     case RTEMS_TASKS_MP_SUSPEND_REQUEST:
     case RTEMS_TASKS_MP_RESUME_REQUEST:
     case RTEMS_TASKS_MP_SET_PRIORITY_REQUEST:
-    case RTEMS_TASKS_MP_GET_NOTE_REQUEST:
-    case RTEMS_TASKS_MP_SET_NOTE_REQUEST:
       break;
 
   }
@@ -231,7 +215,6 @@ void _RTEMS_tasks_MP_Process_packet (
 
     case RTEMS_TASKS_MP_SUSPEND_RESPONSE:
     case RTEMS_TASKS_MP_RESUME_RESPONSE:
-    case RTEMS_TASKS_MP_SET_NOTE_RESPONSE:
 
       the_thread = _MPCI_Process_response( the_packet_prefix );
 
@@ -273,43 +256,6 @@ void _RTEMS_tasks_MP_Process_packet (
 
       _MPCI_Return_packet( the_packet_prefix );
       break;
-
-    case RTEMS_TASKS_MP_GET_NOTE_REQUEST:
-
-      the_packet->Prefix.return_code = rtems_task_get_note(
-        the_packet->Prefix.id,
-        the_packet->notepad,
-        &the_packet->note
-      );
-
-      _RTEMS_tasks_MP_Send_response_packet(
-        RTEMS_TASKS_MP_GET_NOTE_RESPONSE,
-        _Thread_Executing
-      );
-      break;
-
-    case RTEMS_TASKS_MP_GET_NOTE_RESPONSE:
-
-      the_thread = _MPCI_Process_response( the_packet_prefix );
-
-      *(uint32_t   *)the_thread->Wait.return_argument = the_packet->note;
-
-      _MPCI_Return_packet( the_packet_prefix );
-      break;
-
-    case RTEMS_TASKS_MP_SET_NOTE_REQUEST:
-
-      the_packet->Prefix.return_code = rtems_task_set_note(
-        the_packet->Prefix.id,
-        the_packet->notepad,
-        the_packet->note
-      );
-
-      _RTEMS_tasks_MP_Send_response_packet(
-        RTEMS_TASKS_MP_SET_NOTE_RESPONSE,
-        _Thread_Executing
-      );
-      break;
   }
 }