Hi Norbert, If you link to liblttng-ust-ctl, you can use `lttng_ust_ctl_get_version`.
thanks, kienan On 6/18/25 11:22 AM, Norbert Lange via lttng-dev wrote:
Hi, there are some substantial changes in 2.14.0 that afffect how/if tracing is possible. For ex. c246521ddcba1d1d28cfa0482aa500b9122e7264 allows doing more work upfront by calling lttng_ust_init_thread(). With 2.13.x the same code will instead do various syscalls or allocations during the first tracepoints, violating realtime constraints and possible abort the process. I miss an easy method to inspect the Lttng UST Version for checks or workarounds. There is the lttng_ust_loaded variable that could be abused to carry an packed version instead of 1. (Of course that could always cause fallout) Regards, Norbert
