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Merge branch 'bugfix/freertos_smp_startup_race_cond' into 'master'

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freertos: Add SMP FreeRTOS startup race condition workaround

Closes IDF-5284 and IDF-5288

See merge request espressif/esp-idf!18683
This commit is contained in:
Darian
2022-07-01 12:14:24 +08:00
parent c6fc5038eb 0cf1fd3a5a
commit 100ee84b0f
3 changed files with 35 additions and 0 deletions
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9
components/freertos/FreeRTOS-Kernel-SMP/include/freertos/task.h
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@@ -3279,6 +3279,15 @@ void vTaskYieldWithinAPI( void );
#ifdef ESP_PLATFORM
#if ( configNUM_CORES > 1 )
/*
Workaround for non-thread safe multi-core OS startup (see IDF-4524)
This function must be called with interrupts disabled on all cores other than
core 0 during startup.
*/
void vTaskStartSchedulerOtherCores( void );
#endif // configNUM_CORES > 1
#include "idf_additions.h"
#endif //ESP_PLATFORM

7
components/freertos/FreeRTOS-Kernel-SMP/portable/xtensa/port.c
View File

@@ -448,6 +448,13 @@ BaseType_t xPortStartScheduler( void )
port_xSchedulerRunning[xPortGetCoreID()] = 1;
#if configNUM_CORES > 1
// Workaround for non-thread safe multi-core OS startup (see IDF-4524)
if (xPortGetCoreID() != 0) {
vTaskStartSchedulerOtherCores();
}
#endif // configNUM_CORES > 1
// Cannot be directly called from C; never returns
__asm__ volatile ("call0 _frxt_dispatch\n");

19
components/freertos/FreeRTOS-Kernel-SMP/tasks.c
View File

@@ -369,7 +369,15 @@ PRIVILEGED_DATA static List_t xPendingReadyList; /*< Tas
PRIVILEGED_DATA static volatile UBaseType_t uxCurrentNumberOfTasks = ( UBaseType_t ) 0U;
PRIVILEGED_DATA static volatile TickType_t xTickCount = ( TickType_t ) configINITIAL_TICK_COUNT;
PRIVILEGED_DATA static volatile UBaseType_t uxTopReadyPriority = tskIDLE_PRIORITY;
#if ( ( ESP_PLATFORM == 1 ) && ( configNUM_CORES > 1 ) )
/*
Workaround for non-thread safe multi-core OS startup (see IDF-4524)
*/
PRIVILEGED_DATA static volatile BaseType_t xSchedulerRunningPerCore[ configNUM_CORES ] = { pdFALSE };
#define xSchedulerRunning xSchedulerRunningPerCore[ portGET_CORE_ID() ]
#else // ( ESP_PLATFORM == 1 ) && ( configNUM_CORES > 1 )
PRIVILEGED_DATA static volatile BaseType_t xSchedulerRunning = pdFALSE;
#endif // ( ESP_PLATFORM == 1 ) && ( configNUM_CORES > 1 )
PRIVILEGED_DATA static volatile TickType_t xPendedTicks = ( TickType_t ) 0U;
PRIVILEGED_DATA static volatile BaseType_t xYieldPendings[ configNUM_CORES ] = { pdFALSE };
PRIVILEGED_DATA static volatile BaseType_t xNumOfOverflows = ( BaseType_t ) 0;
@@ -6443,3 +6451,14 @@ static void prvAddCurrentTaskToDelayedList( TickType_t xTicksToWait,
#endif
#endif /* if ( configINCLUDE_FREERTOS_TASK_C_ADDITIONS_H == 1 ) */
#if ( ( ESP_PLATFORM == 1 ) && ( configNUM_CORES > 1 ) )
/*
Workaround for non-thread safe multi-core OS startup (see IDF-4524)
*/
void vTaskStartSchedulerOtherCores( void )
{
/* This function is always called with interrupts disabled*/
xSchedulerRunning = pdTRUE;
}
#endif // ( ESP_PLATFORM == 1 ) && ( configNUM_CORES > 1