OS/FreeRTOS: Fix task switch interrupt handling in xPortTaskSwitch

- Remove unnecessary portDISABLE_INTERRUPTS/portENABLE_INTERRUPTS calls in
  xPortTaskSwitch
- Add changelog entry documenting the FreeRTOS task switch interrupt handling fix

Signed-off-by: Huaqi Fang <578567190@qq.com>

Author: fanghuaqi

OS/FreeRTOS/Source/portable/port.c

@@ -519,15 +519,13 @@ void vPortAssert(int32_t x)
 
 void xPortTaskSwitch(void)
 {
-    portDISABLE_INTERRUPTS();
     /* Clear Software IRQ, A MUST */
     SysTimer_ClearSWIRQ();
 #if ( configNUMBER_OF_CORES > 1 )
     vTaskSwitchContext( portGET_CORE_ID() );
 #else
     vTaskSwitchContext();
 #endif
-    portENABLE_INTERRUPTS();
 }
 /*-----------------------------------------------------------*/
 

doc/source/changelog.rst

@@ -65,6 +65,7 @@ This is release version of ``0.9.0`` of Nuclei SDK, which is still under develop
   - Add support for **ThreadX SMP** kernel support for both Nuclei RISC-V RV32 and RV64 CPU with ECLIC feature enabled.
   - Fix issue where ``tx_thread_run_count`` was not incremented during task switches and initial task creation in the ThreadX kernel.
   - Add ECLICv2 hardware context auto-save support for all RTOS including FreeRTOS, RT-Thread, ThreadX and UCOSII when ``ECLIC_HWCTX=1`` and ``XLCFG_ECLIC=2``
+  - Fix FreeRTOS task switch ``xPortTaskSwitch`` function, interrupt should be disabled during task switch
 
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