Bug Report High CPU Usage events_power_efficient

[Martin Zaharinov]

Hello Qian and Greg 
With latest 5.6.x kernel have problem with events_power_efficient 28488 root      28   0       0      0      0 R  95.5   0.0 101:38.19 kworker/2:1+events_power_efficient Process start to load machine after 3-4 hour and load not stop only reboot machine remove process . Server runing on AMD EPIC CPU 2x 7301 32Gb Ram Have 2 x 10G card Intel when machine load over 1G traffic machine locked and only restart fix problem to next load . After move traffic and server stop load process still hear and load server ?
And after reboot process move to other core .

Best Regards,
Martin