Re: Questions about ETM overflow

On 20/09/2019 20:06, Yabin Cui wrote:

Thanks for the suggestions!

...

I think if use ETR's sg mode or CATU mode, it might ease the overhead

for CPU and memory bandwidth rather than flat mode.

I am using ETR's flat mode, not sure if the qcom sdm845 supports SG or CATU. If they are good for performance, I can try them.

As far as I understand, sdm845 supports SG and this is part of the standard upstream device tree. (see "arm,scatter-gather" property for tmc_etr).

Suzuki