static void _Thread_Create_idle_for_cpu( Per_CPU_Control *cpu ) { Objects_Name name; Thread_Control *idle; const Scheduler_Control *scheduler; name.name_u32 = _Objects_Build_name( 'I', 'D', 'L', 'E' ); /* * The entire workspace is zeroed during its initialization. Thus, all * fields not explicitly assigned were explicitly zeroed by * _Workspace_Initialization. */ idle = _Thread_Internal_allocate(); _Thread_Initialize( &_Thread_Internal_information, idle, _Scheduler_Get_by_CPU( cpu ), NULL, /* allocate the stack */ _Stack_Ensure_minimum( rtems_configuration_get_idle_task_stack_size() ), CPU_IDLE_TASK_IS_FP, PRIORITY_MAXIMUM, true, /* preemptable */ THREAD_CPU_BUDGET_ALGORITHM_NONE, NULL, /* no budget algorithm callout */ 0, /* all interrupts enabled */ name ); /* * WARNING!!! This is necessary to "kick" start the system and * MUST be done before _Thread_Start is invoked. */ cpu->heir = cpu->executing = idle; idle->Start.Entry.adaptor = _Thread_Entry_adaptor_idle; idle->Start.Entry.Kinds.Idle.entry = rtems_configuration_get_idle_task(); _Thread_Load_environment( idle ); scheduler = _Scheduler_Get_by_CPU( cpu ); #if defined(RTEMS_SMP) if (scheduler == NULL) { return; } #endif idle->current_state = STATES_READY; _Scheduler_Start_idle( scheduler, idle, cpu ); _User_extensions_Thread_start( idle ); }
rtems_status_code rtems_scheduler_ident_by_processor( uint32_t cpu_index, rtems_id *id ) { const Scheduler_Control *scheduler; if ( id == NULL ) { return RTEMS_INVALID_ADDRESS; } if ( cpu_index >= _SMP_Get_processor_count() ) { return RTEMS_INVALID_NAME; } scheduler = _Scheduler_Get_by_CPU( _Per_CPU_Get_by_index( cpu_index ) ); #if defined(RTEMS_SMP) if ( scheduler == NULL ) { return RTEMS_INCORRECT_STATE; } #else _Assert( scheduler != NULL ); #endif *id = _Scheduler_Build_id( _Scheduler_Get_index( scheduler ) ); return RTEMS_SUCCESSFUL; }