715ed71b82
* Improved sampling performance
* Sampling tweaks
- backtrace::get() returns vector of string_view
- further performance improvements
- tweaked _use_label
- wrapped samples in perfetto "samples [omnitrace]" block
- samples in TID=0 in sampling mode are in separate thread row
* Fix empty HW counter desc + category for sampling
- fallback to to metric name if papi event info description not found
- add perfetto sampling category
* Limit the SIGALRM frequency
[ROCm/rocprofiler-systems commit: 0ee32b3755]