nrf0_rx_thread using 100% cpu

[edillmann]

Hi,

The nrf0_rx_thread is using 100% cpu, shouldn't RX be IRQ driven ?

Regards,
Eric

[sergey-suloev]

@edillmann It already is, by the way. The RX thread sleeps waiting for the event which arrives from the ISR.

[mciupak]

Yes, it is interrupt/event driven with wait queues, so it should not use 100%, unless there is something wrong...

What does debug dmesg say when it hits 100% cpu?

Unfortunate;y I do not have an access to working setup now so I cannot check this. @sergey-suloev do you have maybe a working setup and if so could you please check cpu usage of rx thread?

[sergey-suloev]

@mciupak I don't have either.
But when I was testing it (about 2-3 mon ago) there was NO 100% usage. Never.
My test environment was an Allwinner H3-based board, kernel 4.20.

[mciupak]

Neither I haven't seen such behavior.

@edillmann Please share more details regarding you build and setup. And dmesg logs as well. There is also status register printed to dmesg if you read it via sysfs.