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[参考译文] TDA4VM:TDA4VH 设计验证测试 RCU CPU 停止警告

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https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1175322/tda4vm-tda4vh-design-validation-test-rcu-cpu-stall-warnning

器件型号:TDA4VM

大家好、体验一下

在运行设计验证测试(系统满载)且系统卡住时、RCU CPU 停止扭曲。

RCU 警告如下:

[CPU7] Time:Thread 2.724192 FEQ    :1970 MHz   Real:2.797871 带宽:40.815072 Gb/s

[CPU4]时间:线程2.702266s    FEQ:1986 MHz   实际值:2.822112s[17755.387587] RCU:信息:RCU_PREOPTH 检测到 CPU /任务上的停止:

[17755.393728] RCU:    5-...0:(1个周期的这个 GP) idle=51e/1/0x40000000000000000002 softirq=202913/202914 fqs=1250644

[17818.407590] RCU:信息:RCU_Preempt Detected secteds on CPU/ tasks (RCU_preempt 检测到 CPU /任务上的停转):

[17818.413727] RCU:    5-...0:(1个周期的 GP) idle=51e/1/0x400000000000000000000002 softirq=202913/202914 fqs=1257695

[17881.427584] RCU:信息:RCU_Preempt Detected secteds on CPU/ tasks:

[17881.433730] RCU:    5-...0:(1个周期的这个 GP) idle=51e/1/0x40000000000000000002 softirq=202913/202914 fqs=1264853

[17944.447602] RCU:信息:RCU_Preempt Detected secteds on CPU/ tasks (RCU_preempt 检测到 CPU /任务上的停转):

[17944.453721] RCU:    5-...0:(1个周期的 GP) idle=51e/1/0x40000000000000000002 softirq=202913/202914 fqs=1271935

[18007.467583] RCU:信息:RCU_Preempt Detected sected sidks on CPU/ tasks:

 我们可以通过 Linux 酷刑测试重现此问题、如下所示:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1137990/tda4vm-tda4vh-rcu-cpu-stall-warning/4423421?tisearch=e2e-sitesearch&keymatch=%20user%3A515377#4423421

谢谢

Quantli