ETR buffer overfill protection

Hello,

We are using coresight to dump compressed stream through ETR into a 16MB buffer in RAM. (The platform is nVidia TX2) To gather data from the buffer we are using the Linux dd command:

dd if=/dev/8050000.etr of=~/coresightdata.bin

The issue is that during the copying of the data, the coresight recording becomes disabled (which shouldn't really be the case since its a circular buffer), so we are having some blind spots in the recordings for the duration of the copying of data from RAM into a file.

Is there any way to prevent this from happening? Maybe to set up some kind of ping-pong scheme, or to specify somehow that coresight shouldn't stop recording while accessing the ETR buffer?

Thank you.

Srdjan Stokic

Mobile: +389-78-835-505