Revert to RunPerfEventOpen instead of RunPerfEventOpenSingleBuffers.
Revert to RunPerfEventOpen instead of RunPerfEventOpenSingleBuffers.

To test recent changes to RunPerfEventOpen for dynamic instrumentation
using perf_event_open.

pierricgimmig/orbitprofiler,pierricgimmig/orbitprofiler,google/orbit,pierricgimmig/orbitprofiler,google/orbit,pierricgimmig/orbitprofiler,google/orbit,google/orbit