AnsweredAssumed Answered

i.MX6D dynamic CPU status changing by CONFIG_HOTPLUG_CPU.

Question asked by Satoshi Shimoda on Oct 8, 2015
Latest reply on Oct 8, 2015 by Anson Huang

Hi community,

 

Our partner met a kernel panic with jb4.2.2_1.1.0-ga on a i.MX6D based custom board.

They found the kernel panic was occurred by CPU status changing (idle <--> online) on unexpected timing.

So our partner think this problem will be prevented if they stop dynamic CPU status changing.

Then, they understand the dynamic CPU status changing is enabled by the following config, so they consider disable this config.

CONFIG_HOTPLUG_CPU

 

[Question]

Would you let me know whether the dynamic CPU status changing is able to be prevented by disabling CONFIG_HOTPLUG_CPU?

If it can, would you let me know the side effect and concern by disabling CONFIG_HOTPLUG_CPU?

 

 

Best Regards,

Satoshi Shimoda

Outcomes