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;
}
