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Add affinity to IDLE tasks in SMP systems (#1415)

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rus084 2026-05-17 23:36:59 +03:00 committed by GitHub
parent a8c9d35152
commit d3b074a01e
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3 changed files with 17 additions and 1 deletions
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7
examples/template_configuration/FreeRTOSConfig.h
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@ -558,6 +558,13 @@
* tskNO_AFFINITY if left undefined. */ * tskNO_AFFINITY if left undefined. */
#define configTIMER_SERVICE_TASK_CORE_AFFINITY tskNO_AFFINITY #define configTIMER_SERVICE_TASK_CORE_AFFINITY tskNO_AFFINITY
/* When using SMP (i.e. configNUMBER_OF_CORES is greater than one), set
* configIDLE_AFFINITY to 1 to pin each Idle task to its corresponding
* core. When set to 1, Idle task N will only run on core N, using an affinity
* mask of (1 << N). Set to 0 to allow the scheduler to run Idle tasks on any
* available core. Defaults to 0 if left undefined. */
#define configIDLE_AFFINITY 0
/******************************************************************************/ /******************************************************************************/
/* ARMv8-M secure side port related definitions. ******************************/ /* ARMv8-M secure side port related definitions. ******************************/
/******************************************************************************/ /******************************************************************************/

4
include/FreeRTOS.h
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@ -377,6 +377,10 @@
#define configIDLE_SHOULD_YIELD 1 #define configIDLE_SHOULD_YIELD 1
#endif #endif
#ifndef configIDLE_AFFINITY
#define configIDLE_AFFINITY 0
#endif
#if configMAX_TASK_NAME_LEN < 1 #if configMAX_TASK_NAME_LEN < 1
#error configMAX_TASK_NAME_LEN must be set to a minimum of 1 in FreeRTOSConfig.h #error configMAX_TASK_NAME_LEN must be set to a minimum of 1 in FreeRTOSConfig.h
#endif #endif

7
tasks.c
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@ -3687,8 +3687,13 @@ static BaseType_t prvCreateIdleTasks( void )
/* Assign idle task to each core before SMP scheduler is running. */ /* Assign idle task to each core before SMP scheduler is running. */
xIdleTaskHandles[ xCoreID ]->xTaskRunState = xCoreID; xIdleTaskHandles[ xCoreID ]->xTaskRunState = xCoreID;
pxCurrentTCBs[ xCoreID ] = xIdleTaskHandles[ xCoreID ]; pxCurrentTCBs[ xCoreID ] = xIdleTaskHandles[ xCoreID ];
#if ( ( configIDLE_AFFINITY == 1 ) && ( configUSE_CORE_AFFINITY == 1 ) )
{
xIdleTaskHandles[ xCoreID ]->uxCoreAffinityMask = ( ( UBaseType_t ) 1U << ( UBaseType_t ) xCoreID );
}
#endif
} }
#endif #endif /* if ( configNUMBER_OF_CORES == 1 ) */
} }
} }