len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-04-19 21:11:57 -04:00
Code Issues Packages Projects Releases Wiki Activity

If tickless idle mode is in use then ensure prvResetNextTaskUnblockTime() is called after a task is unblocked due to a bit being set in an event group. This allows the MCU to re-enter sleep mode at the earliest possible time (rather than waiting until the timeout that would occur had the task not being unblocked be the event group) and matches a similar change made for queues and derivative objects (semaphores, etc.) some time ago.

Browse source
This commit is contained in:
Richard Barry 2020-01-03 22:50:31 +00:00
parent 853856e8cc
commit 881958514b
1 changed files with 16 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
FreeRTOS/Source/tasks.c
View file

@ -3317,6 +3317,20 @@ TCB_t *pxUnblockedTCB;
configASSERT( pxUnblockedTCB ); configASSERT( pxUnblockedTCB );
( void ) uxListRemove( pxEventListItem ); ( void ) uxListRemove( pxEventListItem );
#if( configUSE_TICKLESS_IDLE != 0 )
{
/* If a task is blocked on a kernel object then xNextTaskUnblockTime
might be set to the blocked task's time out time. If the task is
unblocked for a reason other than a timeout xNextTaskUnblockTime is
normally left unchanged, because it is automatically reset to a new
value when the tick count equals xNextTaskUnblockTime. However if
tickless idling is used it might be more important to enter sleep mode
at the earliest possible time - so reset xNextTaskUnblockTime here to
ensure it is updated at the earliest possible time. */
prvResetNextTaskUnblockTime();
}
#endif
/* Remove the task from the delayed list and add it to the ready list. The /* Remove the task from the delayed list and add it to the ready list. The
scheduler is suspended so interrupts will not be accessing the ready scheduler is suspended so interrupts will not be accessing the ready
lists. */ lists. */
@ -3597,6 +3611,8 @@ static portTASK_FUNCTION( prvIdleTask, pvParameters )
const UBaseType_t uxNonApplicationTasks = 1; const UBaseType_t uxNonApplicationTasks = 1;
eSleepModeStatus eReturn = eStandardSleep; eSleepModeStatus eReturn = eStandardSleep;
/* This function must be called from a critical section. */
if( listCURRENT_LIST_LENGTH( &xPendingReadyList ) != 0 ) if( listCURRENT_LIST_LENGTH( &xPendingReadyList ) != 0 )
{ {
/* A task was made ready while the scheduler was suspended. */ /* A task was made ready while the scheduler was suspended. */