portGET_TASK_LOCK() cost too much cpu on FreeRTOS SMP on Coretex-A53 platform

Kernel
1

Hi, I have run FreeRTOS SMP on Coretex-A53 platform，but i found portGET_TASK_LOCK() cost too much cpu when the system is under heavy load，Is there any way to optime the lock in FreeRTOS SMP system?

2

I assume you are using this port - FreeRTOS-Kernel-Partner-Supported-Ports/TI/CORTEX_A53_64-BIT_TI_AM64_SMP at main · FreeRTOS/FreeRTOS-Kernel-Partner-Supported-Ports · GitHub. This port was contributed by TI - I suggest reaching out to them.

3

@aggarg Thanks for for your reply，but i think this is a commom problem in FreeRTOS SMP because the critical section protected by this lock is too large, such as the critical section between vTaskSuspendAll() and xTaskResumeAll().

4

We are aware of that and there is roadmap item to address it which is currently being worked upon by community members - Granular Lock for SMP · Issue #905 · FreeRTOS/FreeRTOS-Kernel · GitHub.