I did some compilation tests using
./build_oai -s --run-group "0101*", all was fine.
lte-softmodem with the sequans and let it run for a while with both
uplink and downlink UDP low throughput traffic, all was fine.
I ran some TCP tests, downlink 14 Mb/s (because the sequans does not report a CQI of 15 but 14 maximum, so we don't go to maximum MCS, so 14 Mb/s instead of 16) with a very clean radio (almost no error in the HARQ processes).
For uplink things are not so clean, it starts at 6 Mb/s and after a while goes down to 2/3 Mbit/s. Lot's of errors in the HARQ processes, mostly uplink but also downlink.
This is a both with and without T activated.
So to me it's fine.
The T tracer is a debugging tool. When it's not enabled, it has zero impact on the processing. I think we need to do very little tests before merging. I'll let you decide but to me it's okay!