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add more protection for per-core data

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This commit is contained in:
Liu Zhi Fu 2016-12-26 19:04:41 +08:00
parent 99f4c697ee
commit d2e58193d2
3 changed files with 45 additions and 19 deletions
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6
components/freertos/Kconfig
View file

@ -195,7 +195,11 @@ config FREERTOS_PORTMUX_DEBUG_RECURSIVE
If enabled, additional debug information will be printed for recursive
portMUX usage.
config FREERTOS_INT_DISABLING_DURATION_DEBUG
bool "Debug interrupt disabling duration"
default n
help
If enabled, the longest interrupt disabling duration will be recorded.
endif # FREERTOS_DEBUG_INTERNALS

4
components/freertos/include/freertos/portmacro.h
View file

@ -213,7 +213,6 @@ portBASE_TYPE vPortCPUReleaseMutex(portMUX_TYPE *mux);
#define portEXIT_CRITICAL_ISR(mux) vPortCPUReleaseMutex(mux)
#endif
// Cleaner and preferred solution allows nested interrupts disabling and restoring via local registers or stack.
// They can be called from interrupts too.
//NOT SMP-COMPATIBLE! Use only if all you want is to disable the interrupts locally!
@ -225,6 +224,9 @@ static inline unsigned portENTER_CRITICAL_NESTED() { unsigned state = XTOS_SET_I
#define portCLEAR_INTERRUPT_MASK_FROM_ISR(state) portEXIT_CRITICAL_NESTED(state)
#define portDisableINT() portENTER_CRITICAL_NESTED()
#define portEnableINT(state) portEXIT_CRITICAL_NESTED((state))
/*
* Wrapper for the Xtensa compare-and-set instruction. This subroutine will atomically compare
* *mux to compare, and if it's the same, will set *mux to set. It will return the old value

54
components/freertos/tasks.c
View file

@ -369,7 +369,7 @@ PRIVILEGED_DATA static portMUX_TYPE xTickCountMutex = portMUX_INITIALIZER_UNLOCK
\
/* listGET_OWNER_OF_NEXT_ENTRY indexes through the list, so the tasks of \
the same priority get an equal share of the processor time. */ \
listGET_OWNER_OF_NEXT_ENTRY( pxCurrentTCB[ xPortGetCoreID() ], &( pxReadyTasksLists[ uxTopReadyPriority ] ) ); \
listGET_OWNER_OF_NEXT_ENTRY( xTaskGetCurrentTaskHandle(), &( pxReadyTasksLists[ uxTopReadyPriority ] ) ); \
} /* taskSELECT_HIGHEST_PRIORITY_TASK */
/*-----------------------------------------------------------*/
@ -398,7 +398,7 @@ PRIVILEGED_DATA static portMUX_TYPE xTickCountMutex = portMUX_INITIALIZER_UNLOCK
/* Find the highest priority queue that contains ready tasks. */ \
portGET_HIGHEST_PRIORITY( uxTopPriority, uxTopReadyPriority ); \
configASSERT( listCURRENT_LIST_LENGTH( &( pxReadyTasksLists[ uxTopPriority ] ) ) > 0 ); \
listGET_OWNER_OF_NEXT_ENTRY( pxCurrentTCB[ xPortGetCoreID() ], &( pxReadyTasksLists[ uxTopPriority ] ) ); \
listGET_OWNER_OF_NEXT_ENTRY( xTaskGetCurrentTaskHandle(), &( pxReadyTasksLists[ uxTopPriority ] ) ); \
} /* taskSELECT_HIGHEST_PRIORITY_TASK() */
/*-----------------------------------------------------------*/
@ -456,7 +456,7 @@ count overflows. */
* see if the parameter is NULL and returns a pointer to the appropriate TCB.
*/
/* ToDo: See if this still works for multicore. */
#define prvGetTCBFromHandle( pxHandle ) ( ( ( pxHandle ) == NULL ) ? ( TCB_t * ) pxCurrentTCB[ xPortGetCoreID() ] : ( TCB_t * ) ( pxHandle ) )
#define prvGetTCBFromHandle( pxHandle ) ( ( ( pxHandle ) == NULL ) ? ( TCB_t * ) xTaskGetCurrentTaskHandle() : ( TCB_t * ) ( pxHandle ) )
/* The item value of the event list item is normally used to hold the priority
of the task to which it belongs (coded to allow it to be held in reverse
@ -631,9 +631,11 @@ static void prvAddNewTaskToReadyList( TCB_t *pxNewTCB, TaskFunction_t pxTaskCode
*/
void taskYIELD_OTHER_CORE( BaseType_t xCoreID, UBaseType_t uxPriority )
{
TCB_t *curTCB = xTaskGetCurrentTaskHandle();
BaseType_t i;
if (xCoreID != tskNO_AFFINITY) {
if ( pxCurrentTCB[ xCoreID ]->uxPriority < uxPriority ) {
if ( curTCB->uxPriority < uxPriority ) {
vPortYieldOtherCore( xCoreID );
}
}
@ -1039,6 +1041,7 @@ UBaseType_t x;
static void prvAddNewTaskToReadyList( TCB_t *pxNewTCB, TaskFunction_t pxTaskCode, const BaseType_t xCoreID )
{
TCB_t *curTCB;
BaseType_t i;
/* Ensure interrupts don't access the task lists while the lists are being
@ -1111,6 +1114,7 @@ static void prvAddNewTaskToReadyList( TCB_t *pxNewTCB, TaskFunction_t pxTaskCode
portSETUP_TCB( pxNewTCB );
}
curTCB = pxCurrentTCB[ xPortGetCoreID() ];
taskEXIT_CRITICAL(&xTaskQueueMutex);
if( xSchedulerRunning != pdFALSE )
@ -1121,17 +1125,17 @@ static void prvAddNewTaskToReadyList( TCB_t *pxNewTCB, TaskFunction_t pxTaskCode
the other processor will keep running the task it's working on, and only switch to the newer
task on a timer interrupt. */
//No mux here, uxPriority is mostly atomic and there's not really any harm if this check misfires.
if( pxCurrentTCB[ xPortGetCoreID() ]->uxPriority < pxNewTCB->uxPriority )
if( curTCB->uxPriority < pxNewTCB->uxPriority )
{
/* Scheduler is running. If the created task is of a higher priority than an executing task
then it should run now.
No mux here, uxPriority is mostly atomic and there's not really any harm if this check misfires.
*/
if( tskCAN_RUN_HERE( xCoreID ) && pxCurrentTCB[ xPortGetCoreID() ]->uxPriority < pxNewTCB->uxPriority )
if( tskCAN_RUN_HERE( xCoreID ) && curTCB->uxPriority < pxNewTCB->uxPriority )
{
taskYIELD_IF_USING_PREEMPTION();
}
else if( xCoreID != xPortGetCoreID() ) {
else if( xCoreID != xPortGetCoreID() ) {//TODO
taskYIELD_OTHER_CORE(xCoreID, pxNewTCB->uxPriority);
}
else
@ -1409,11 +1413,12 @@ static void prvAddNewTaskToReadyList( TCB_t *pxNewTCB, TaskFunction_t pxTaskCode
eTaskState eReturn;
List_t *pxStateList;
const TCB_t * const pxTCB = ( TCB_t * ) xTask;
TCB_t * curTCB = xTaskGetCurrentTaskHandle();
UNTESTED_FUNCTION();
configASSERT( pxTCB );
if( pxTCB == pxCurrentTCB[ xPortGetCoreID() ] )
if( pxTCB == curTCB )
{
/* The task calling this function is querying its own state. */
eReturn = eRunning;
@ -1691,6 +1696,7 @@ static void prvAddNewTaskToReadyList( TCB_t *pxNewTCB, TaskFunction_t pxTaskCode
void vTaskSuspend( TaskHandle_t xTaskToSuspend )
{
TCB_t *pxTCB;
TCB_t *curTCB;
UNTESTED_FUNCTION();
taskENTER_CRITICAL(&xTaskQueueMutex);
@ -1723,10 +1729,11 @@ static void prvAddNewTaskToReadyList( TCB_t *pxNewTCB, TaskFunction_t pxTaskCode
}
vListInsertEnd( &xSuspendedTaskList, &( pxTCB->xGenericListItem ) );
curTCB = pxCurrentTCB[ xPortGetCoreID() ];
}
taskEXIT_CRITICAL(&xTaskQueueMutex);
if( pxTCB == pxCurrentTCB[ xPortGetCoreID() ] )
if( pxTCB == curTCB )
{
if( xSchedulerRunning != pdFALSE )
{
@ -2034,7 +2041,7 @@ void vTaskEndScheduler( void )
//Return global reent struct if FreeRTOS isn't running,
struct _reent* __getreent() {
//No lock needed because if this changes, we won't be running anymore.
TCB_t *currTask=pxCurrentTCB[ xPortGetCoreID() ];
TCB_t *currTask=xTaskGetCurrentTaskHandle();
if (currTask==NULL) {
//No task running. Return global struct.
return _GLOBAL_REENT;
@ -2052,7 +2059,11 @@ void vTaskSuspendAll( void )
BaseType_t. Please read Richard Barry's reply in the following link to a
post in the FreeRTOS support forum before reporting this as a bug! -
http://goo.gl/wu4acr */
unsigned state;
state = portDisableINT();
++uxSchedulerSuspended[ xPortGetCoreID() ];
portEnableINT(state);
}
/*----------------------------------------------------------*/
@ -2595,7 +2606,7 @@ BaseType_t xSwitchRequired = pdFALSE;
/* If xTask is NULL then we are setting our own task hook. */
if( xTask == NULL )
{
xTCB = ( TCB_t * ) pxCurrentTCB[ xPortGetCoreID() ];
xTCB = ( TCB_t * ) xTaskGetCurrentTaskHandle();
}
else
{
@ -2626,7 +2637,7 @@ BaseType_t xSwitchRequired = pdFALSE;
/* If xTask is NULL then we are calling our own task hook. */
if( xTask == NULL )
{
xTCB = ( TCB_t * ) pxCurrentTCB[ xPortGetCoreID() ];
xTCB = ( TCB_t * ) xTaskGetCurrentTaskHandle();
}
else
{
@ -3387,8 +3398,8 @@ static portTASK_FUNCTION( prvIdleTask, pvParameters )
if( xIndex < configNUM_THREAD_LOCAL_STORAGE_POINTERS )
{
pxTCB = prvGetTCBFromHandle( xTaskToSet );
taskENTER_CRITICAL(&xTaskQueueMutex);
pxTCB = prvGetTCBFromHandle( xTaskToSet );
pxTCB->pvThreadLocalStoragePointers[ xIndex ] = pvValue;
pxTCB->pvThreadLocalStoragePointersDelCallback[ xIndex ] = xDelCallback;
taskEXIT_CRITICAL(&xTaskQueueMutex);
@ -3408,8 +3419,10 @@ static portTASK_FUNCTION( prvIdleTask, pvParameters )
if( xIndex < configNUM_THREAD_LOCAL_STORAGE_POINTERS )
{
taskENTER_CRITICAL(&xTaskQueueMutex);
pxTCB = prvGetTCBFromHandle( xTaskToSet );
pxTCB->pvThreadLocalStoragePointers[ xIndex ] = pvValue;
taskEXIT_CRITICAL(&xTaskQueueMutex);
}
}
#endif /* configTHREAD_LOCAL_STORAGE_DELETE_CALLBACKS */
@ -3803,10 +3816,11 @@ TCB_t *pxTCB;
TaskHandle_t xTaskGetCurrentTaskHandle( void )
{
TaskHandle_t xReturn;
unsigned state;
vPortCPUAcquireMutex(&xTaskQueueMutex);
state = portDisableINT();
xReturn = pxCurrentTCB[ xPortGetCoreID() ];
vPortCPUReleaseMutex(&xTaskQueueMutex);
portEnableINT(state);
return xReturn;
}
@ -3832,7 +3846,9 @@ TCB_t *pxTCB;
BaseType_t xTaskGetSchedulerState( void )
{
BaseType_t xReturn;
unsigned state;
state = portDisableINT();
if( xSchedulerRunning == pdFALSE )
{
xReturn = taskSCHEDULER_NOT_STARTED;
@ -3848,6 +3864,7 @@ TCB_t *pxTCB;
xReturn = taskSCHEDULER_SUSPENDED;
}
}
portEnableINT(state);
return xReturn;
}
@ -4383,16 +4400,19 @@ TickType_t uxReturn;
void *pvTaskIncrementMutexHeldCount( void )
{
TCB_t *curTCB;
/* If xSemaphoreCreateMutex() is called before any tasks have been created
then pxCurrentTCB will be NULL. */
then xTaskGetCurrentTaskHandle() will be NULL. */
taskENTER_CRITICAL(&xTaskQueueMutex);
if( pxCurrentTCB[ xPortGetCoreID() ] != NULL )
{
( pxCurrentTCB[ xPortGetCoreID() ]->uxMutexesHeld )++;
}
curTCB = pxCurrentTCB[ xPortGetCoreID() ];
taskEXIT_CRITICAL(&xTaskQueueMutex);
return pxCurrentTCB[ xPortGetCoreID() ];
return curTCB;
}
#endif /* configUSE_MUTEXES */